p stat1 Search Results


90
R&D Systems phosphorylated stat1
Canonical or non-canonical <t>STAT1</t> pathway protein expression. Cells were activated with IFN-γ or IFN-γ+TNF-α and treated with 2 mM butyrate (green bars) for 1 h, 4 h or 16 h. IRF9 ( A , E , F ), phosphorylated JAK2 ( B , G – I ), phosphorylated STAT1 ( C , J – L ) and phosphorylated NFkB p65 ( D , M – O ) protein expression was determined. Representable blots of proteins of interest and β-actin control are shown in A-D. Data are represented as mean ± SEM ( n = 3). Significant differences are shown as * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.001, medium control as compared to 2 mM butyrate control or to IFN-γ or IFN-γ+TNF-α-activated intestinal epithelial cells in absence of butyrate. Activated cells were also compared to activated cells treated with butyrate.
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Novus Biologicals stat1
Canonical or non-canonical <t>STAT1</t> pathway protein expression. Cells were activated with IFN-γ or IFN-γ+TNF-α and treated with 2 mM butyrate (green bars) for 1 h, 4 h or 16 h. IRF9 ( A , E , F ), phosphorylated JAK2 ( B , G – I ), phosphorylated STAT1 ( C , J – L ) and phosphorylated NFkB p65 ( D , M – O ) protein expression was determined. Representable blots of proteins of interest and β-actin control are shown in A-D. Data are represented as mean ± SEM ( n = 3). Significant differences are shown as * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.001, medium control as compared to 2 mM butyrate control or to IFN-γ or IFN-γ+TNF-α-activated intestinal epithelial cells in absence of butyrate. Activated cells were also compared to activated cells treated with butyrate.
Stat1, supplied by Novus Biologicals, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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94
Santa Cruz Biotechnology phospho stat1
RNAi-mediated depletion of DOT1L decreases IRF1 gene expression. A, DOT1L Western blot of whole cell extracts collected from 2fTGH cells stably expressing the pTRIPZ shRNAmir non-silencing (shRNA-NS) or shRNAmir-DOT1L (shRNA-DOT1L) vectors with or without IFN-γ. Dynamin served as a loading control. B and C, qRT-PCR to quantitate IRF1 mRNA and heteronuclear RNA (hnRNA) levels in the shRNAmir non-silencing and shRNAmir-DOT1L cell lines treated with IFN-γ for the times indicated or left untreated (Un). IRF1 was normalized to GAPDH, and expression is presented as -fold change relative to the uninduced, shRNAmir-NS condition. Error bars indicate S.E. (n = 3). Student's t test determined significance; **, p ≤ 0.01, *, p ≤ 0.05. D, IRF1 Western blot of whole cell extracts of shRNAmir non-silencing or shRNAmir-DOT1L cells treated with IFN-γ for the indicated times or left untreated. GAPDH served as a loading control. E, H3K79me3 Western blot of acid-extracted histones from the shRNAmir non-silencing and shRNAmir-DOT1L cell lines. Pan H3 served as a loading control. F, <t>STAT1</t> and phospho-STAT1 Western blots of whole cell extracts collected from 2fTGH cells stably expressing the shRNAmir non-silencing or shRNAmir-DOT1L vectors. The ratio of phospho-STAT1 (pSTAT) to total STAT1 is the same in both cell lines. Western blot bands were quantified with ImageJ.
Phospho Stat1, supplied by Santa Cruz Biotechnology, used in various techniques. Bioz Stars score: 94/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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R&D Systems anti p stat1 tyr701 antibody
RNAi-mediated depletion of DOT1L decreases IRF1 gene expression. A, DOT1L Western blot of whole cell extracts collected from 2fTGH cells stably expressing the pTRIPZ shRNAmir non-silencing (shRNA-NS) or shRNAmir-DOT1L (shRNA-DOT1L) vectors with or without IFN-γ. Dynamin served as a loading control. B and C, qRT-PCR to quantitate IRF1 mRNA and heteronuclear RNA (hnRNA) levels in the shRNAmir non-silencing and shRNAmir-DOT1L cell lines treated with IFN-γ for the times indicated or left untreated (Un). IRF1 was normalized to GAPDH, and expression is presented as -fold change relative to the uninduced, shRNAmir-NS condition. Error bars indicate S.E. (n = 3). Student's t test determined significance; **, p ≤ 0.01, *, p ≤ 0.05. D, IRF1 Western blot of whole cell extracts of shRNAmir non-silencing or shRNAmir-DOT1L cells treated with IFN-γ for the indicated times or left untreated. GAPDH served as a loading control. E, H3K79me3 Western blot of acid-extracted histones from the shRNAmir non-silencing and shRNAmir-DOT1L cell lines. Pan H3 served as a loading control. F, <t>STAT1</t> and phospho-STAT1 Western blots of whole cell extracts collected from 2fTGH cells stably expressing the shRNAmir non-silencing or shRNAmir-DOT1L vectors. The ratio of phospho-STAT1 (pSTAT) to total STAT1 is the same in both cell lines. Western blot bands were quantified with ImageJ.
Anti P Stat1 Tyr701 Antibody, supplied by R&D Systems, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Bioworld Antibodies anti-stat1 (1:2,000 dilution)
RNAi-mediated depletion of DOT1L decreases IRF1 gene expression. A, DOT1L Western blot of whole cell extracts collected from 2fTGH cells stably expressing the pTRIPZ shRNAmir non-silencing (shRNA-NS) or shRNAmir-DOT1L (shRNA-DOT1L) vectors with or without IFN-γ. Dynamin served as a loading control. B and C, qRT-PCR to quantitate IRF1 mRNA and heteronuclear RNA (hnRNA) levels in the shRNAmir non-silencing and shRNAmir-DOT1L cell lines treated with IFN-γ for the times indicated or left untreated (Un). IRF1 was normalized to GAPDH, and expression is presented as -fold change relative to the uninduced, shRNAmir-NS condition. Error bars indicate S.E. (n = 3). Student's t test determined significance; **, p ≤ 0.01, *, p ≤ 0.05. D, IRF1 Western blot of whole cell extracts of shRNAmir non-silencing or shRNAmir-DOT1L cells treated with IFN-γ for the indicated times or left untreated. GAPDH served as a loading control. E, H3K79me3 Western blot of acid-extracted histones from the shRNAmir non-silencing and shRNAmir-DOT1L cell lines. Pan H3 served as a loading control. F, <t>STAT1</t> and phospho-STAT1 Western blots of whole cell extracts collected from 2fTGH cells stably expressing the shRNAmir non-silencing or shRNAmir-DOT1L vectors. The ratio of phospho-STAT1 (pSTAT) to total STAT1 is the same in both cell lines. Western blot bands were quantified with ImageJ.
Anti Stat1 (1:2,000 Dilution), supplied by Bioworld Antibodies, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Arigo Biolaboratories p-stat1
RNAi-mediated depletion of DOT1L decreases IRF1 gene expression. A, DOT1L Western blot of whole cell extracts collected from 2fTGH cells stably expressing the pTRIPZ shRNAmir non-silencing (shRNA-NS) or shRNAmir-DOT1L (shRNA-DOT1L) vectors with or without IFN-γ. Dynamin served as a loading control. B and C, qRT-PCR to quantitate IRF1 mRNA and heteronuclear RNA (hnRNA) levels in the shRNAmir non-silencing and shRNAmir-DOT1L cell lines treated with IFN-γ for the times indicated or left untreated (Un). IRF1 was normalized to GAPDH, and expression is presented as -fold change relative to the uninduced, shRNAmir-NS condition. Error bars indicate S.E. (n = 3). Student's t test determined significance; **, p ≤ 0.01, *, p ≤ 0.05. D, IRF1 Western blot of whole cell extracts of shRNAmir non-silencing or shRNAmir-DOT1L cells treated with IFN-γ for the indicated times or left untreated. GAPDH served as a loading control. E, H3K79me3 Western blot of acid-extracted histones from the shRNAmir non-silencing and shRNAmir-DOT1L cell lines. Pan H3 served as a loading control. F, <t>STAT1</t> and phospho-STAT1 Western blots of whole cell extracts collected from 2fTGH cells stably expressing the shRNAmir non-silencing or shRNAmir-DOT1L vectors. The ratio of phospho-STAT1 (pSTAT) to total STAT1 is the same in both cell lines. Western blot bands were quantified with ImageJ.
P Stat1, supplied by Arigo Biolaboratories, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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PeproTech p-701-stat1 antibody
Top three IPA-generated networks of differentially expressed molecules identified by DIGE and iTRAQ labeling between early and mock, late and mock, and late and early WNV-infected brain samples.
P 701 Stat1 Antibody, supplied by PeproTech, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Merck KGaA p-stat1 ser727
Upregulation of IFN -inducible genes and <t>STAT1</t> phosphorylation in residual tumour foci after AC treatment. ( A ) In vivo response of HBCx-17 to AC (2/100 mg kg −1 ) (mean tumour volume±s.d.) n =11 per group. ( B ) H&E analysis and in situ hybridisation of Alu probes of one residual tumour foci after chemotherapy response (× 25). ( C ) Type I and II interferon distribution by ISG Database. ( D ) qRT–PCR analysis of STAT1 and eight other IFN -inducible genes in untreated samples, residual and regrowing tumours. HBCx-6, HBCx-8 HBCx-10 and HBCx-17 PDX were treated with AC, mean±s.d., n =5 per group. Comparative analysis of all samples from the four experiments in different experimental conditions (Rel: relapse; Rem: remission; Untr: untreated); fold-change refers to mean intensity value ratio between the two experimental condition indicated. P -value was calculated by t -test except for results indicated with *= t -test with Welch's correction or **=Mann–Whitney test. ( E ) Western blotting of P-STAT1 <t>Tyr701/Ser727</t> , STAT1, IF44, LCN2 and OAS1 in three PDX models responding to AC treatment. Tumours were analysed at the indicated phases: untreated (U), residual (N=nodule) and relapse tumour (R=Relapse).
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Wolters Kluwer Health p-stat1
Upregulation of IFN -inducible genes and <t>STAT1</t> phosphorylation in residual tumour foci after AC treatment. ( A ) In vivo response of HBCx-17 to AC (2/100 mg kg −1 ) (mean tumour volume±s.d.) n =11 per group. ( B ) H&E analysis and in situ hybridisation of Alu probes of one residual tumour foci after chemotherapy response (× 25). ( C ) Type I and II interferon distribution by ISG Database. ( D ) qRT–PCR analysis of STAT1 and eight other IFN -inducible genes in untreated samples, residual and regrowing tumours. HBCx-6, HBCx-8 HBCx-10 and HBCx-17 PDX were treated with AC, mean±s.d., n =5 per group. Comparative analysis of all samples from the four experiments in different experimental conditions (Rel: relapse; Rem: remission; Untr: untreated); fold-change refers to mean intensity value ratio between the two experimental condition indicated. P -value was calculated by t -test except for results indicated with *= t -test with Welch's correction or **=Mann–Whitney test. ( E ) Western blotting of P-STAT1 <t>Tyr701/Ser727</t> , STAT1, IF44, LCN2 and OAS1 in three PDX models responding to AC treatment. Tumours were analysed at the indicated phases: untreated (U), residual (N=nodule) and relapse tumour (R=Relapse).
P Stat1, supplied by Wolters Kluwer Health, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Abbomax Inc p-stat1 (py701
Upregulation of IFN -inducible genes and <t>STAT1</t> phosphorylation in residual tumour foci after AC treatment. ( A ) In vivo response of HBCx-17 to AC (2/100 mg kg −1 ) (mean tumour volume±s.d.) n =11 per group. ( B ) H&E analysis and in situ hybridisation of Alu probes of one residual tumour foci after chemotherapy response (× 25). ( C ) Type I and II interferon distribution by ISG Database. ( D ) qRT–PCR analysis of STAT1 and eight other IFN -inducible genes in untreated samples, residual and regrowing tumours. HBCx-6, HBCx-8 HBCx-10 and HBCx-17 PDX were treated with AC, mean±s.d., n =5 per group. Comparative analysis of all samples from the four experiments in different experimental conditions (Rel: relapse; Rem: remission; Untr: untreated); fold-change refers to mean intensity value ratio between the two experimental condition indicated. P -value was calculated by t -test except for results indicated with *= t -test with Welch's correction or **=Mann–Whitney test. ( E ) Western blotting of P-STAT1 <t>Tyr701/Ser727</t> , STAT1, IF44, LCN2 and OAS1 in three PDX models responding to AC treatment. Tumours were analysed at the indicated phases: untreated (U), residual (N=nodule) and relapse tumour (R=Relapse).
P Stat1 (Py701, supplied by Abbomax Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Sugen Inc reagents that recognize p-stat-1 (ser 727)
Upregulation of IFN -inducible genes and <t>STAT1</t> phosphorylation in residual tumour foci after AC treatment. ( A ) In vivo response of HBCx-17 to AC (2/100 mg kg −1 ) (mean tumour volume±s.d.) n =11 per group. ( B ) H&E analysis and in situ hybridisation of Alu probes of one residual tumour foci after chemotherapy response (× 25). ( C ) Type I and II interferon distribution by ISG Database. ( D ) qRT–PCR analysis of STAT1 and eight other IFN -inducible genes in untreated samples, residual and regrowing tumours. HBCx-6, HBCx-8 HBCx-10 and HBCx-17 PDX were treated with AC, mean±s.d., n =5 per group. Comparative analysis of all samples from the four experiments in different experimental conditions (Rel: relapse; Rem: remission; Untr: untreated); fold-change refers to mean intensity value ratio between the two experimental condition indicated. P -value was calculated by t -test except for results indicated with *= t -test with Welch's correction or **=Mann–Whitney test. ( E ) Western blotting of P-STAT1 <t>Tyr701/Ser727</t> , STAT1, IF44, LCN2 and OAS1 in three PDX models responding to AC treatment. Tumours were analysed at the indicated phases: untreated (U), residual (N=nodule) and relapse tumour (R=Relapse).
Reagents That Recognize P Stat 1 (Ser 727), supplied by Sugen Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Bioss stat1 polyclonal antibody
Upregulation of IFN -inducible genes and <t>STAT1</t> phosphorylation in residual tumour foci after AC treatment. ( A ) In vivo response of HBCx-17 to AC (2/100 mg kg −1 ) (mean tumour volume±s.d.) n =11 per group. ( B ) H&E analysis and in situ hybridisation of Alu probes of one residual tumour foci after chemotherapy response (× 25). ( C ) Type I and II interferon distribution by ISG Database. ( D ) qRT–PCR analysis of STAT1 and eight other IFN -inducible genes in untreated samples, residual and regrowing tumours. HBCx-6, HBCx-8 HBCx-10 and HBCx-17 PDX were treated with AC, mean±s.d., n =5 per group. Comparative analysis of all samples from the four experiments in different experimental conditions (Rel: relapse; Rem: remission; Untr: untreated); fold-change refers to mean intensity value ratio between the two experimental condition indicated. P -value was calculated by t -test except for results indicated with *= t -test with Welch's correction or **=Mann–Whitney test. ( E ) Western blotting of P-STAT1 <t>Tyr701/Ser727</t> , STAT1, IF44, LCN2 and OAS1 in three PDX models responding to AC treatment. Tumours were analysed at the indicated phases: untreated (U), residual (N=nodule) and relapse tumour (R=Relapse).
Stat1 Polyclonal Antibody, supplied by Bioss, used in various techniques. Bioz Stars score: 94/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Image Search Results


Canonical or non-canonical STAT1 pathway protein expression. Cells were activated with IFN-γ or IFN-γ+TNF-α and treated with 2 mM butyrate (green bars) for 1 h, 4 h or 16 h. IRF9 ( A , E , F ), phosphorylated JAK2 ( B , G – I ), phosphorylated STAT1 ( C , J – L ) and phosphorylated NFkB p65 ( D , M – O ) protein expression was determined. Representable blots of proteins of interest and β-actin control are shown in A-D. Data are represented as mean ± SEM ( n = 3). Significant differences are shown as * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.001, medium control as compared to 2 mM butyrate control or to IFN-γ or IFN-γ+TNF-α-activated intestinal epithelial cells in absence of butyrate. Activated cells were also compared to activated cells treated with butyrate.

Journal: International Journal of Molecular Sciences

Article Title: Butyrate Prevents Induction of CXCL10 and Non-Canonical IRF9 Expression by Activated Human Intestinal Epithelial Cells via HDAC Inhibition

doi: 10.3390/ijms23073980

Figure Lengend Snippet: Canonical or non-canonical STAT1 pathway protein expression. Cells were activated with IFN-γ or IFN-γ+TNF-α and treated with 2 mM butyrate (green bars) for 1 h, 4 h or 16 h. IRF9 ( A , E , F ), phosphorylated JAK2 ( B , G – I ), phosphorylated STAT1 ( C , J – L ) and phosphorylated NFkB p65 ( D , M – O ) protein expression was determined. Representable blots of proteins of interest and β-actin control are shown in A-D. Data are represented as mean ± SEM ( n = 3). Significant differences are shown as * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.001, medium control as compared to 2 mM butyrate control or to IFN-γ or IFN-γ+TNF-α-activated intestinal epithelial cells in absence of butyrate. Activated cells were also compared to activated cells treated with butyrate.

Article Snippet: As primary antibodies phosphorylated JAK2 (1:200, Thermo Fisher Scientific), phosphorylated STAT1 (1:200, R&D systems), phosphorylated NF-kappaB p65 (1:1000, Cell signaling, Danvers, MA, USA), IRF9 (1:1000, Cell signaling) and β-actin (1:1000, Cell signaling) were used.

Techniques: Expressing, Control

The effect of butyrate and histone deacetylase (HDAC) inhibitor Trichostatin A (TSA) on mRNA expression of genes related to the STAT1 signaling cascade. Intestinal epithelial cells were activated with IFN-γ or IFN-γ+TNF-α and treated with 2 mM butyrate (green bars) or 10 μM TSA (pink bars) for 4 h. mRNA expression was measured in CXCL10 ( A , B ), IRF9 ( C , D ) JAK2 ( E , F ) and SOCS1 ( G , H ). Data are represented as mean ± SEM ( n = 4). Significant differences are shown as ** p < 0.01, *** p < 0.001, **** p < 0.001 Control compared to butyrate, TSA, IFN-γ ( A , C , E , G ) or IFNγ+TNFα ( B , D , F , H ) activated cells and activated cells compared to butyrate or TSA treated activated cells.

Journal: International Journal of Molecular Sciences

Article Title: Butyrate Prevents Induction of CXCL10 and Non-Canonical IRF9 Expression by Activated Human Intestinal Epithelial Cells via HDAC Inhibition

doi: 10.3390/ijms23073980

Figure Lengend Snippet: The effect of butyrate and histone deacetylase (HDAC) inhibitor Trichostatin A (TSA) on mRNA expression of genes related to the STAT1 signaling cascade. Intestinal epithelial cells were activated with IFN-γ or IFN-γ+TNF-α and treated with 2 mM butyrate (green bars) or 10 μM TSA (pink bars) for 4 h. mRNA expression was measured in CXCL10 ( A , B ), IRF9 ( C , D ) JAK2 ( E , F ) and SOCS1 ( G , H ). Data are represented as mean ± SEM ( n = 4). Significant differences are shown as ** p < 0.01, *** p < 0.001, **** p < 0.001 Control compared to butyrate, TSA, IFN-γ ( A , C , E , G ) or IFNγ+TNFα ( B , D , F , H ) activated cells and activated cells compared to butyrate or TSA treated activated cells.

Article Snippet: As primary antibodies phosphorylated JAK2 (1:200, Thermo Fisher Scientific), phosphorylated STAT1 (1:200, R&D systems), phosphorylated NF-kappaB p65 (1:1000, Cell signaling, Danvers, MA, USA), IRF9 (1:1000, Cell signaling) and β-actin (1:1000, Cell signaling) were used.

Techniques: Histone Deacetylase Assay, Expressing, Control

The effect of histone deacetylase inhibitor Trichostatin A (TSA) on downstream proteins of the STAT1 signaling cascade. Protein expression in IFN-γ or IFN-γ+TNF-α-activated intestinal epithelial cells (IECs) after 4 h incubation with 10 μM TSA (pink bars). Proteins measured were IRF9 ( A , E ), phosphorylated JAK2 ( B , F ), phosphorylated STAT1 ( C , G ), phosphorylated NFκB p65 ( D , H ). Data are represented as mean ± SEM ( n = 3). Significant differences are shown as * p < 0.05, ** p < 0.01, *** p < 0.001, control compared to IFN-γ-activated IECs, IFN-γ+TNF-α-activated IECs or 10 μM TSA control. Activated cells were compared to activated cells treated with TSA.

Journal: International Journal of Molecular Sciences

Article Title: Butyrate Prevents Induction of CXCL10 and Non-Canonical IRF9 Expression by Activated Human Intestinal Epithelial Cells via HDAC Inhibition

doi: 10.3390/ijms23073980

Figure Lengend Snippet: The effect of histone deacetylase inhibitor Trichostatin A (TSA) on downstream proteins of the STAT1 signaling cascade. Protein expression in IFN-γ or IFN-γ+TNF-α-activated intestinal epithelial cells (IECs) after 4 h incubation with 10 μM TSA (pink bars). Proteins measured were IRF9 ( A , E ), phosphorylated JAK2 ( B , F ), phosphorylated STAT1 ( C , G ), phosphorylated NFκB p65 ( D , H ). Data are represented as mean ± SEM ( n = 3). Significant differences are shown as * p < 0.05, ** p < 0.01, *** p < 0.001, control compared to IFN-γ-activated IECs, IFN-γ+TNF-α-activated IECs or 10 μM TSA control. Activated cells were compared to activated cells treated with TSA.

Article Snippet: As primary antibodies phosphorylated JAK2 (1:200, Thermo Fisher Scientific), phosphorylated STAT1 (1:200, R&D systems), phosphorylated NF-kappaB p65 (1:1000, Cell signaling, Danvers, MA, USA), IRF9 (1:1000, Cell signaling) and β-actin (1:1000, Cell signaling) were used.

Techniques: Histone Deacetylase Assay, Expressing, Incubation, Control

RNAi-mediated depletion of DOT1L decreases IRF1 gene expression. A, DOT1L Western blot of whole cell extracts collected from 2fTGH cells stably expressing the pTRIPZ shRNAmir non-silencing (shRNA-NS) or shRNAmir-DOT1L (shRNA-DOT1L) vectors with or without IFN-γ. Dynamin served as a loading control. B and C, qRT-PCR to quantitate IRF1 mRNA and heteronuclear RNA (hnRNA) levels in the shRNAmir non-silencing and shRNAmir-DOT1L cell lines treated with IFN-γ for the times indicated or left untreated (Un). IRF1 was normalized to GAPDH, and expression is presented as -fold change relative to the uninduced, shRNAmir-NS condition. Error bars indicate S.E. (n = 3). Student's t test determined significance; **, p ≤ 0.01, *, p ≤ 0.05. D, IRF1 Western blot of whole cell extracts of shRNAmir non-silencing or shRNAmir-DOT1L cells treated with IFN-γ for the indicated times or left untreated. GAPDH served as a loading control. E, H3K79me3 Western blot of acid-extracted histones from the shRNAmir non-silencing and shRNAmir-DOT1L cell lines. Pan H3 served as a loading control. F, STAT1 and phospho-STAT1 Western blots of whole cell extracts collected from 2fTGH cells stably expressing the shRNAmir non-silencing or shRNAmir-DOT1L vectors. The ratio of phospho-STAT1 (pSTAT) to total STAT1 is the same in both cell lines. Western blot bands were quantified with ImageJ.

Journal: The Journal of Biological Chemistry

Article Title: A Novel Disrupter of Telomere Silencing 1-like (DOT1L) Interaction Is Required for Signal Transducer and Activator of Transcription 1 (STAT1)-activated Gene Expression

doi: 10.1074/jbc.M111.284190

Figure Lengend Snippet: RNAi-mediated depletion of DOT1L decreases IRF1 gene expression. A, DOT1L Western blot of whole cell extracts collected from 2fTGH cells stably expressing the pTRIPZ shRNAmir non-silencing (shRNA-NS) or shRNAmir-DOT1L (shRNA-DOT1L) vectors with or without IFN-γ. Dynamin served as a loading control. B and C, qRT-PCR to quantitate IRF1 mRNA and heteronuclear RNA (hnRNA) levels in the shRNAmir non-silencing and shRNAmir-DOT1L cell lines treated with IFN-γ for the times indicated or left untreated (Un). IRF1 was normalized to GAPDH, and expression is presented as -fold change relative to the uninduced, shRNAmir-NS condition. Error bars indicate S.E. (n = 3). Student's t test determined significance; **, p ≤ 0.01, *, p ≤ 0.05. D, IRF1 Western blot of whole cell extracts of shRNAmir non-silencing or shRNAmir-DOT1L cells treated with IFN-γ for the indicated times or left untreated. GAPDH served as a loading control. E, H3K79me3 Western blot of acid-extracted histones from the shRNAmir non-silencing and shRNAmir-DOT1L cell lines. Pan H3 served as a loading control. F, STAT1 and phospho-STAT1 Western blots of whole cell extracts collected from 2fTGH cells stably expressing the shRNAmir non-silencing or shRNAmir-DOT1L vectors. The ratio of phospho-STAT1 (pSTAT) to total STAT1 is the same in both cell lines. Western blot bands were quantified with ImageJ.

Article Snippet: Antibodies The antibodies used were: H3K79me3 (Abcam ab2621 for Western blots and Invitrogen 491020 for chromatin immunoprecipitation (ChIP)), Pan H3 CT (Millipore 07-690), RNA polymerase II (Santa Cruz Biotechnology sc-899), IgG (Jackson ImmunoResearch Laboratories), STAT1 (Santa Cruz Biotechnology sc-345X for ChIP, sc-346 for co-immunoprecipitation (co-IP) and Western blots), DOT1L (Bethyl Laboratories A300-953A), FLAG (Sigma F1804), GAPDH (Abcam ab9485), dynamin (Santa Cruz Biotechnology sc7988), phospho-STAT1 (Santa Cruz Biotechnology sc-6402), and anti-rabbit or anti-mouse horseradish peroxidase (HRP) (Jackson ImmunoResearch Laboratories).

Techniques: Gene Expression, Western Blot, Stable Transfection, Expressing, shRNA, Control, Quantitative RT-PCR

RNA polymerase II and STAT1 localization to the IRF1 promoter is reduced in shRNAmir-DOT1L cells. A–H, ChIP of shRNAmir non-silencing (shRNA-NS) or shRNAmir-DOT1L (shRNA-DOT1L) cells treated with IFN-γ for 30 min (right panels) or left untreated (left panels). ChIP was performed with the antibodies indicated, and qPCR, using primers spanning the IRF1 gene locus, quantified the precipitate yield reported as the percentage of input. IgG served as the negative control. p ≤ 0.05 for panels A, B, D, F, and H for solid lines with black diamonds versus dotted lines with black diamonds.

Journal: The Journal of Biological Chemistry

Article Title: A Novel Disrupter of Telomere Silencing 1-like (DOT1L) Interaction Is Required for Signal Transducer and Activator of Transcription 1 (STAT1)-activated Gene Expression

doi: 10.1074/jbc.M111.284190

Figure Lengend Snippet: RNA polymerase II and STAT1 localization to the IRF1 promoter is reduced in shRNAmir-DOT1L cells. A–H, ChIP of shRNAmir non-silencing (shRNA-NS) or shRNAmir-DOT1L (shRNA-DOT1L) cells treated with IFN-γ for 30 min (right panels) or left untreated (left panels). ChIP was performed with the antibodies indicated, and qPCR, using primers spanning the IRF1 gene locus, quantified the precipitate yield reported as the percentage of input. IgG served as the negative control. p ≤ 0.05 for panels A, B, D, F, and H for solid lines with black diamonds versus dotted lines with black diamonds.

Article Snippet: Antibodies The antibodies used were: H3K79me3 (Abcam ab2621 for Western blots and Invitrogen 491020 for chromatin immunoprecipitation (ChIP)), Pan H3 CT (Millipore 07-690), RNA polymerase II (Santa Cruz Biotechnology sc-899), IgG (Jackson ImmunoResearch Laboratories), STAT1 (Santa Cruz Biotechnology sc-345X for ChIP, sc-346 for co-immunoprecipitation (co-IP) and Western blots), DOT1L (Bethyl Laboratories A300-953A), FLAG (Sigma F1804), GAPDH (Abcam ab9485), dynamin (Santa Cruz Biotechnology sc7988), phospho-STAT1 (Santa Cruz Biotechnology sc-6402), and anti-rabbit or anti-mouse horseradish peroxidase (HRP) (Jackson ImmunoResearch Laboratories).

Techniques: shRNA, Negative Control

STAT1 co-immunoprecipitates with DOT1L. A–C, whole cell extracts prepared from 2fTGH (A), shRNAmir-DOT1L (shRNA-DOT1L) (B), or shRNAmir non-silencing (shRNA-NS) (C) cells were immunoprecipitated (IP) with α-DOT1L, α-STAT1, or IgG (negative control) and then immunoblotted (IB) with the indicated antibodies. A 5% input aliquot of the extracts was included for reference.

Journal: The Journal of Biological Chemistry

Article Title: A Novel Disrupter of Telomere Silencing 1-like (DOT1L) Interaction Is Required for Signal Transducer and Activator of Transcription 1 (STAT1)-activated Gene Expression

doi: 10.1074/jbc.M111.284190

Figure Lengend Snippet: STAT1 co-immunoprecipitates with DOT1L. A–C, whole cell extracts prepared from 2fTGH (A), shRNAmir-DOT1L (shRNA-DOT1L) (B), or shRNAmir non-silencing (shRNA-NS) (C) cells were immunoprecipitated (IP) with α-DOT1L, α-STAT1, or IgG (negative control) and then immunoblotted (IB) with the indicated antibodies. A 5% input aliquot of the extracts was included for reference.

Article Snippet: Antibodies The antibodies used were: H3K79me3 (Abcam ab2621 for Western blots and Invitrogen 491020 for chromatin immunoprecipitation (ChIP)), Pan H3 CT (Millipore 07-690), RNA polymerase II (Santa Cruz Biotechnology sc-899), IgG (Jackson ImmunoResearch Laboratories), STAT1 (Santa Cruz Biotechnology sc-345X for ChIP, sc-346 for co-immunoprecipitation (co-IP) and Western blots), DOT1L (Bethyl Laboratories A300-953A), FLAG (Sigma F1804), GAPDH (Abcam ab9485), dynamin (Santa Cruz Biotechnology sc7988), phospho-STAT1 (Santa Cruz Biotechnology sc-6402), and anti-rabbit or anti-mouse horseradish peroxidase (HRP) (Jackson ImmunoResearch Laboratories).

Techniques: shRNA, Immunoprecipitation, Negative Control

Mapping of the DOT1L region that interacts with STAT1 in GST pulldown assays. A, graphic depiction of the DOT1L fragments and their relative STAT1 binding affinities. The presence (+) or absence (−) of an interaction is shown, with +, ++, and +++ indicating weak, modest, and strong interactions, respectively. N-term, N-terminal; C-term, C-terminal. B, GST pulldown assays using whole extracts prepared from 2fTGH cells transiently transfected with pcDNA3β FLAG-tagged DOT1L or FLAG-tagged DOT1L fragment vectors and then immunoblotted (IB) with α-FLAG. A 5% input aliquot of the extracts was included for reference.

Journal: The Journal of Biological Chemistry

Article Title: A Novel Disrupter of Telomere Silencing 1-like (DOT1L) Interaction Is Required for Signal Transducer and Activator of Transcription 1 (STAT1)-activated Gene Expression

doi: 10.1074/jbc.M111.284190

Figure Lengend Snippet: Mapping of the DOT1L region that interacts with STAT1 in GST pulldown assays. A, graphic depiction of the DOT1L fragments and their relative STAT1 binding affinities. The presence (+) or absence (−) of an interaction is shown, with +, ++, and +++ indicating weak, modest, and strong interactions, respectively. N-term, N-terminal; C-term, C-terminal. B, GST pulldown assays using whole extracts prepared from 2fTGH cells transiently transfected with pcDNA3β FLAG-tagged DOT1L or FLAG-tagged DOT1L fragment vectors and then immunoblotted (IB) with α-FLAG. A 5% input aliquot of the extracts was included for reference.

Article Snippet: Antibodies The antibodies used were: H3K79me3 (Abcam ab2621 for Western blots and Invitrogen 491020 for chromatin immunoprecipitation (ChIP)), Pan H3 CT (Millipore 07-690), RNA polymerase II (Santa Cruz Biotechnology sc-899), IgG (Jackson ImmunoResearch Laboratories), STAT1 (Santa Cruz Biotechnology sc-345X for ChIP, sc-346 for co-immunoprecipitation (co-IP) and Western blots), DOT1L (Bethyl Laboratories A300-953A), FLAG (Sigma F1804), GAPDH (Abcam ab9485), dynamin (Santa Cruz Biotechnology sc7988), phospho-STAT1 (Santa Cruz Biotechnology sc-6402), and anti-rabbit or anti-mouse horseradish peroxidase (HRP) (Jackson ImmunoResearch Laboratories).

Techniques: Binding Assay, Transfection

Overexpression of the SID of DOT1L represses IRF1 gene expression and alters STAT1 binding. A, qRT-PCR measured IRF1 mRNA expression in 2fTGH, shRNAmir non-silencing (shRNA-NS), and shRNAmir-DOT1L (shRNA-DOT1L) cell lines that were transiently transfected with pcDNA3.0 DOT1L SID, ΔC, ΔN, or empty vector. IFN-γ induction was for 30 min. IRF1 was normalized to GAPDH, and expression is presented as -fold change relative to the uninduced, shRNAmir-NS cell line transfected with empty vector. Error bars indicate S.E. (n = 2). Student's t test determined significance, **, p ≤ 0.01, *, p ≤ 0.05. B, Western blots of acid-extracted histones from the shRNAmir non-silencing and shRNAmir-DOT1L cell lines that were transiently transfected as in panel A. PanH3 served as a loading control. C–H, ChIP, using the indicated antibodies in shRNAmir-DOT1L (right panels) or shRNAmir non-silencing (left panels) cells transiently transfected with pcDNA3.0 DOTL1 SID, ΔC, ΔN, or empty vector and treated with IFN-γ for 30 min. p ≤ 0.05 for black lines with an X or gray squares versus black lines with black squares or white squares in panel C; black lines with gray squares versus others in panel D; black lines with an X or white squares versus black lines with black squares or gray squares in panel E; black lines with white squares versus others in panel F.

Journal: The Journal of Biological Chemistry

Article Title: A Novel Disrupter of Telomere Silencing 1-like (DOT1L) Interaction Is Required for Signal Transducer and Activator of Transcription 1 (STAT1)-activated Gene Expression

doi: 10.1074/jbc.M111.284190

Figure Lengend Snippet: Overexpression of the SID of DOT1L represses IRF1 gene expression and alters STAT1 binding. A, qRT-PCR measured IRF1 mRNA expression in 2fTGH, shRNAmir non-silencing (shRNA-NS), and shRNAmir-DOT1L (shRNA-DOT1L) cell lines that were transiently transfected with pcDNA3.0 DOT1L SID, ΔC, ΔN, or empty vector. IFN-γ induction was for 30 min. IRF1 was normalized to GAPDH, and expression is presented as -fold change relative to the uninduced, shRNAmir-NS cell line transfected with empty vector. Error bars indicate S.E. (n = 2). Student's t test determined significance, **, p ≤ 0.01, *, p ≤ 0.05. B, Western blots of acid-extracted histones from the shRNAmir non-silencing and shRNAmir-DOT1L cell lines that were transiently transfected as in panel A. PanH3 served as a loading control. C–H, ChIP, using the indicated antibodies in shRNAmir-DOT1L (right panels) or shRNAmir non-silencing (left panels) cells transiently transfected with pcDNA3.0 DOTL1 SID, ΔC, ΔN, or empty vector and treated with IFN-γ for 30 min. p ≤ 0.05 for black lines with an X or gray squares versus black lines with black squares or white squares in panel C; black lines with gray squares versus others in panel D; black lines with an X or white squares versus black lines with black squares or gray squares in panel E; black lines with white squares versus others in panel F.

Article Snippet: Antibodies The antibodies used were: H3K79me3 (Abcam ab2621 for Western blots and Invitrogen 491020 for chromatin immunoprecipitation (ChIP)), Pan H3 CT (Millipore 07-690), RNA polymerase II (Santa Cruz Biotechnology sc-899), IgG (Jackson ImmunoResearch Laboratories), STAT1 (Santa Cruz Biotechnology sc-345X for ChIP, sc-346 for co-immunoprecipitation (co-IP) and Western blots), DOT1L (Bethyl Laboratories A300-953A), FLAG (Sigma F1804), GAPDH (Abcam ab9485), dynamin (Santa Cruz Biotechnology sc7988), phospho-STAT1 (Santa Cruz Biotechnology sc-6402), and anti-rabbit or anti-mouse horseradish peroxidase (HRP) (Jackson ImmunoResearch Laboratories).

Techniques: Over Expression, Gene Expression, Binding Assay, Quantitative RT-PCR, Expressing, shRNA, Transfection, Plasmid Preparation, Western Blot, Control

Top three IPA-generated networks of differentially expressed molecules identified by DIGE and iTRAQ labeling between early and mock, late and mock, and late and early WNV-infected brain samples.

Journal: PLoS ONE

Article Title: Altered Protein Networks and Cellular Pathways in Severe West Nile Disease in Mice

doi: 10.1371/journal.pone.0068318

Figure Lengend Snippet: Top three IPA-generated networks of differentially expressed molecules identified by DIGE and iTRAQ labeling between early and mock, late and mock, and late and early WNV-infected brain samples.

Article Snippet: As a positive control for the p-701-STAT1 antibody response, a lysate of murine bone marrow-derived macrophages stimulated for two hours with IFN-γ (PeproTech; 20 ng/ml) was used.

Techniques: Labeling, Cell Function Assay

(A) Protein samples from each group used for proteomic analysis were minimally labeled with cyanine-3 dye. At the top, a representative protein profile of three biological replicates from brain lysates of mock-, and WNV early- and late-infected mice, separated by 10% SDS-PAGE is shown. WB with fluorescence-based methods was used to detect an overlaid fluorescent scan of the general protein patterns (Cy3 dye (green)) and the specific immunoreactive proteins (FITC or Cy5 dye (red)). To better visualize protein detection signals observed with each specific antibody used, corresponding cropped WB images are presented in grey levels. (B) The graphs correspond to the mean ± S.D. of protein quantity measured by densitometry of the antigenic bands. Densitometry analyses were performed using TotalLab Quant v12.2 software (Nonlinear Dynamics), and data were normalized to levels of global protein pattern intensity. The values indicated under each graph correspond to fold changes from paired comparisons ( i.e., WNV-E/mock, WNV-L/mock, WNV-L/WNV-E). WNV-E/−L, biological replicates of brain samples infected by West Nile Virus and collected at early or late time-points. The significance of the differential protein expression are indicated *, p<0.05; **, p<0.01; ***, p<0.001. A.U., arbitrary units. α-, antibody anti-; ★, IFN-γ activated mice bone marrow derived macrophage (p-701-STAT1 positive control); #, no quantification for p-701-STAT1. CAPN9, calpain 9; CLTC, clathrin heavy chain; DNM1, dynamin 1; GFAP, glial fibrillary acidic protein; HUWE1; E3 ubiquitin-protein ligase; MAP1B, microtubule-associated protein 1B; MAP2, microtubule-associated protein 2; PRDX6, peroxiredoxin 6; STAT1/2, signal transducer and activator of transcription 1/2; VIM, vimentin.

Journal: PLoS ONE

Article Title: Altered Protein Networks and Cellular Pathways in Severe West Nile Disease in Mice

doi: 10.1371/journal.pone.0068318

Figure Lengend Snippet: (A) Protein samples from each group used for proteomic analysis were minimally labeled with cyanine-3 dye. At the top, a representative protein profile of three biological replicates from brain lysates of mock-, and WNV early- and late-infected mice, separated by 10% SDS-PAGE is shown. WB with fluorescence-based methods was used to detect an overlaid fluorescent scan of the general protein patterns (Cy3 dye (green)) and the specific immunoreactive proteins (FITC or Cy5 dye (red)). To better visualize protein detection signals observed with each specific antibody used, corresponding cropped WB images are presented in grey levels. (B) The graphs correspond to the mean ± S.D. of protein quantity measured by densitometry of the antigenic bands. Densitometry analyses were performed using TotalLab Quant v12.2 software (Nonlinear Dynamics), and data were normalized to levels of global protein pattern intensity. The values indicated under each graph correspond to fold changes from paired comparisons ( i.e., WNV-E/mock, WNV-L/mock, WNV-L/WNV-E). WNV-E/−L, biological replicates of brain samples infected by West Nile Virus and collected at early or late time-points. The significance of the differential protein expression are indicated *, p<0.05; **, p<0.01; ***, p<0.001. A.U., arbitrary units. α-, antibody anti-; ★, IFN-γ activated mice bone marrow derived macrophage (p-701-STAT1 positive control); #, no quantification for p-701-STAT1. CAPN9, calpain 9; CLTC, clathrin heavy chain; DNM1, dynamin 1; GFAP, glial fibrillary acidic protein; HUWE1; E3 ubiquitin-protein ligase; MAP1B, microtubule-associated protein 1B; MAP2, microtubule-associated protein 2; PRDX6, peroxiredoxin 6; STAT1/2, signal transducer and activator of transcription 1/2; VIM, vimentin.

Article Snippet: As a positive control for the p-701-STAT1 antibody response, a lysate of murine bone marrow-derived macrophages stimulated for two hours with IFN-γ (PeproTech; 20 ng/ml) was used.

Techniques: Labeling, Infection, SDS Page, Fluorescence, Software, Expressing, Derivative Assay, Positive Control

Upregulation of IFN -inducible genes and STAT1 phosphorylation in residual tumour foci after AC treatment. ( A ) In vivo response of HBCx-17 to AC (2/100 mg kg −1 ) (mean tumour volume±s.d.) n =11 per group. ( B ) H&E analysis and in situ hybridisation of Alu probes of one residual tumour foci after chemotherapy response (× 25). ( C ) Type I and II interferon distribution by ISG Database. ( D ) qRT–PCR analysis of STAT1 and eight other IFN -inducible genes in untreated samples, residual and regrowing tumours. HBCx-6, HBCx-8 HBCx-10 and HBCx-17 PDX were treated with AC, mean±s.d., n =5 per group. Comparative analysis of all samples from the four experiments in different experimental conditions (Rel: relapse; Rem: remission; Untr: untreated); fold-change refers to mean intensity value ratio between the two experimental condition indicated. P -value was calculated by t -test except for results indicated with *= t -test with Welch's correction or **=Mann–Whitney test. ( E ) Western blotting of P-STAT1 Tyr701/Ser727 , STAT1, IF44, LCN2 and OAS1 in three PDX models responding to AC treatment. Tumours were analysed at the indicated phases: untreated (U), residual (N=nodule) and relapse tumour (R=Relapse).

Journal: British Journal of Cancer

Article Title: Activation of IFN/STAT1 signalling predicts response to chemotherapy in oestrogen receptor-negative breast cancer

doi: 10.1038/bjc.2015.398

Figure Lengend Snippet: Upregulation of IFN -inducible genes and STAT1 phosphorylation in residual tumour foci after AC treatment. ( A ) In vivo response of HBCx-17 to AC (2/100 mg kg −1 ) (mean tumour volume±s.d.) n =11 per group. ( B ) H&E analysis and in situ hybridisation of Alu probes of one residual tumour foci after chemotherapy response (× 25). ( C ) Type I and II interferon distribution by ISG Database. ( D ) qRT–PCR analysis of STAT1 and eight other IFN -inducible genes in untreated samples, residual and regrowing tumours. HBCx-6, HBCx-8 HBCx-10 and HBCx-17 PDX were treated with AC, mean±s.d., n =5 per group. Comparative analysis of all samples from the four experiments in different experimental conditions (Rel: relapse; Rem: remission; Untr: untreated); fold-change refers to mean intensity value ratio between the two experimental condition indicated. P -value was calculated by t -test except for results indicated with *= t -test with Welch's correction or **=Mann–Whitney test. ( E ) Western blotting of P-STAT1 Tyr701/Ser727 , STAT1, IF44, LCN2 and OAS1 in three PDX models responding to AC treatment. Tumours were analysed at the indicated phases: untreated (U), residual (N=nodule) and relapse tumour (R=Relapse).

Article Snippet: Lysates were resolved on 4–12% TGX gels (Bio-Rad, Marnes-la-Coquette, France), transferred into nitrocellulose membranes (Bio-Rad) and immunoblotted overnight at 4 °C or 1 h at room temperature with the following antibodies: P-STAT1 Tyr701 , CASP-3 (1/750–1000; Cell Signaling Ozyme), Total STAT1 (1/1000; Santa Cruz antibodies, Nanterre, France), P-STAT1 Ser727 , P- γ H2AX Ser139 (1/1000; Merck Millipore), OAS1, IFI44, LCN2, or Actin, as an internal control loading (1/1000; Sigma-Aldrich, St Louis, MO, USA).

Techniques: In Vivo, In Situ, Hybridization, Quantitative RT-PCR, MANN-WHITNEY, Western Blot

List of interferon-inducible genes differentially expressed ( P <0.05) between HBCx-6, HBCx-8 and HBCx-17 in residual tumour cells (Nodule) and untreated tumours (CTRL)

Journal: British Journal of Cancer

Article Title: Activation of IFN/STAT1 signalling predicts response to chemotherapy in oestrogen receptor-negative breast cancer

doi: 10.1038/bjc.2015.398

Figure Lengend Snippet: List of interferon-inducible genes differentially expressed ( P <0.05) between HBCx-6, HBCx-8 and HBCx-17 in residual tumour cells (Nodule) and untreated tumours (CTRL)

Article Snippet: Lysates were resolved on 4–12% TGX gels (Bio-Rad, Marnes-la-Coquette, France), transferred into nitrocellulose membranes (Bio-Rad) and immunoblotted overnight at 4 °C or 1 h at room temperature with the following antibodies: P-STAT1 Tyr701 , CASP-3 (1/750–1000; Cell Signaling Ozyme), Total STAT1 (1/1000; Santa Cruz antibodies, Nanterre, France), P-STAT1 Ser727 , P- γ H2AX Ser139 (1/1000; Merck Millipore), OAS1, IFI44, LCN2, or Actin, as an internal control loading (1/1000; Sigma-Aldrich, St Louis, MO, USA).

Techniques: Histone Deacetylase Assay

Analysis of IFN/STAT1 pathway activity in chemo-responder and chemo-resistant PDX at early stage after chemotherapy. ( A ) mRNA expression of a 21-gene IFN/STAT1 signature analysed by qPCR at days 0, 3 and 7 post-AC treatment in 9 responders and 5 resistant models. Each curve represents the expression of one gene. ( B ) In vivo response to AC and irinotecan in the HER2+ HBCx13 model and analysis of IFN-inducible genes ( BST2 , CLDN1 , DDX60 , IFI44 , IFI44L , IFI6 , IFIT1 , IFIT3 , IFITM1 , IRF9 , MX1 , OAS1 , OAS2 , PARP12 , PARP9 , SAMD9 , STAT1 , STAT2 , UBE2L6 , ZNFX1 ) at D7 and D14.

Journal: British Journal of Cancer

Article Title: Activation of IFN/STAT1 signalling predicts response to chemotherapy in oestrogen receptor-negative breast cancer

doi: 10.1038/bjc.2015.398

Figure Lengend Snippet: Analysis of IFN/STAT1 pathway activity in chemo-responder and chemo-resistant PDX at early stage after chemotherapy. ( A ) mRNA expression of a 21-gene IFN/STAT1 signature analysed by qPCR at days 0, 3 and 7 post-AC treatment in 9 responders and 5 resistant models. Each curve represents the expression of one gene. ( B ) In vivo response to AC and irinotecan in the HER2+ HBCx13 model and analysis of IFN-inducible genes ( BST2 , CLDN1 , DDX60 , IFI44 , IFI44L , IFI6 , IFIT1 , IFIT3 , IFITM1 , IRF9 , MX1 , OAS1 , OAS2 , PARP12 , PARP9 , SAMD9 , STAT1 , STAT2 , UBE2L6 , ZNFX1 ) at D7 and D14.

Article Snippet: Lysates were resolved on 4–12% TGX gels (Bio-Rad, Marnes-la-Coquette, France), transferred into nitrocellulose membranes (Bio-Rad) and immunoblotted overnight at 4 °C or 1 h at room temperature with the following antibodies: P-STAT1 Tyr701 , CASP-3 (1/750–1000; Cell Signaling Ozyme), Total STAT1 (1/1000; Santa Cruz antibodies, Nanterre, France), P-STAT1 Ser727 , P- γ H2AX Ser139 (1/1000; Merck Millipore), OAS1, IFI44, LCN2, or Actin, as an internal control loading (1/1000; Sigma-Aldrich, St Louis, MO, USA).

Techniques: Activity Assay, Expressing, In Vivo

Activation of JAK/STAT1 pathway and expression of IFN- γ in the early response to AC. ( A ) Western blotting analysis of total STAT1 or P-STAT1 Tyr701/Ser727 in four responders and four resistant models at D0, D3 and D7 post-AC treatment. ( B ) Human and murine soluble IFN- γ expression determined by cytokine array in HBCx-10 tumours at D3, D7 and D14 after AC and during residual and regrowing phases. ( C ) Effect of RUX alone on HBCx-10 tumour growth. Mean RTV±s.d., n =10. ( D ) P-STAT1 Tyr701 foci detected by IHC in one untreated xenograft and the number of P-STAT1 Tyr701 -positive tumour cells in untreated and RUX-treated tumour samples. * P ⩽0.05 (Student's t -test). ( E ) Kaplan–Meier survival analysis of mice treated with chemotherapy alone and with chemotherapy and RUX ( P <0.0001, log-rank (Mantel–Cox) test). ( F ) Expression of IFN- inducible genes by qPCR in untreated, AC, RUX alone or RUX/AC groups at 8 days (D8) posttreatment.

Journal: British Journal of Cancer

Article Title: Activation of IFN/STAT1 signalling predicts response to chemotherapy in oestrogen receptor-negative breast cancer

doi: 10.1038/bjc.2015.398

Figure Lengend Snippet: Activation of JAK/STAT1 pathway and expression of IFN- γ in the early response to AC. ( A ) Western blotting analysis of total STAT1 or P-STAT1 Tyr701/Ser727 in four responders and four resistant models at D0, D3 and D7 post-AC treatment. ( B ) Human and murine soluble IFN- γ expression determined by cytokine array in HBCx-10 tumours at D3, D7 and D14 after AC and during residual and regrowing phases. ( C ) Effect of RUX alone on HBCx-10 tumour growth. Mean RTV±s.d., n =10. ( D ) P-STAT1 Tyr701 foci detected by IHC in one untreated xenograft and the number of P-STAT1 Tyr701 -positive tumour cells in untreated and RUX-treated tumour samples. * P ⩽0.05 (Student's t -test). ( E ) Kaplan–Meier survival analysis of mice treated with chemotherapy alone and with chemotherapy and RUX ( P <0.0001, log-rank (Mantel–Cox) test). ( F ) Expression of IFN- inducible genes by qPCR in untreated, AC, RUX alone or RUX/AC groups at 8 days (D8) posttreatment.

Article Snippet: Lysates were resolved on 4–12% TGX gels (Bio-Rad, Marnes-la-Coquette, France), transferred into nitrocellulose membranes (Bio-Rad) and immunoblotted overnight at 4 °C or 1 h at room temperature with the following antibodies: P-STAT1 Tyr701 , CASP-3 (1/750–1000; Cell Signaling Ozyme), Total STAT1 (1/1000; Santa Cruz antibodies, Nanterre, France), P-STAT1 Ser727 , P- γ H2AX Ser139 (1/1000; Merck Millipore), OAS1, IFI44, LCN2, or Actin, as an internal control loading (1/1000; Sigma-Aldrich, St Louis, MO, USA).

Techniques: Activation Assay, Expressing, Western Blot