Review



pbabe hygro htert plasmid  (Addgene inc)


Bioz Verified Symbol Addgene inc is a verified supplier  
  • Logo
  • About
  • News
  • Press Release
  • Team
  • Advisors
  • Partners
  • Contact
  • Bioz Stars
  • Bioz vStars
  • 93

    Structured Review

    Addgene inc pbabe hygro htert plasmid
    Pbabe Hygro Htert Plasmid, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 103 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/pbabe+hygro+htert+plasmid/pBABE-hygro-hTERT+(Plasmid+%231773)/pmc12961426-53-23-25
    Average 93 stars, based on 103 article reviews
    pbabe hygro htert plasmid - by Bioz Stars, 2026-10
    93/100 stars

    Images

    Related Articles

    Plasmid Preparation:

    Article Title: Adipose-Derived Mesenchymal Stem Cell (MSC) Immortalization by Modulation of hTERT and TP53 Expression Levels.
    Article Snippet: Stained cells were analyzed on a BD FACS Aria III (BD Bioscience, USA) flow cytometer. .. For retrovirus assembly, the pBabe-hygro-hTERT plasmid encoding the hTERT gene and the hygromycin B resistance gene (Cat. No. 1773, AddGene, Watertown, MA, USA), packaging plasmids pUMVC (Cat. No. 8449, AddGene, USA), and pCMV-VSV-G (Cat. No. 8454, AddGene, USA) were used. .. Lentivirus assembly was produced by the pLVUHshp53-GFP vector plasmid (Cat. No. 11653, AddGene, USA), encoding short hairpin RNA against the TP53 and containing the insert gene for green fluorescent protein (GFP), and packaging plasmids psPAX2 (Cat. No. 12260, AddGene, USA) and pCMV-VSV-G. Retroviral and lentiviral particles were produced using calcium phosphate transfection of 293FT cells.

    Article Title: MnTE-2-PyP protects fibroblast mitochondria from hyperglycemia and radiation exposure.
    Article Snippet: .. P3158 are normal human prostate fibroblasts that were immortalized by pBABE-hygro-hTERT plasmid (Addgene, plasmid cat #1773) and kindly gifted by Dr. J Tyson McDonald. .. RPMI-1640 (Hyclone, cat #: SH30027.01) media, supplemented with 10% fetal bovine serum (FBS) and 1% penicillin/streptomycin were used to culture P3158 cells.

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated foetal bovine serum, 100 U/mL penicillin-streptomycin and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalization, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Article Title: Manganese porphyrin, MnTE-2-PyP, treatment protects the prostate from radiation-induced fibrosis (RIF) by activating the NRF2 signaling pathway and enhancing SOD2 and sirtuin activity
    Article Snippet: .. Immortalization was performed by using pBABE-hygro-hTERT plasmid, a gift from Dr. Robert Weinberg (Addgene, plasmid #1773, Cambridge, MA, USA). ..

    Article Title: MnTE-2-PyP, a manganese porphyrin, reduces cytotoxicity caused by irradiation in a diabetic environment through the induction of endogenous antioxidant defenses
    Article Snippet: .. P3158 cells are cultured from primary prostate tissue collected from the prostate of a heathy male and immortalized using a pBABE-hygro-hTERT plasmid (Addgene, plasmid #1773) and the immortalized cells were obtained from Dr. McDonald J. Tyson. .. P3158 cells were cultured in RPMI-1640 (Hyclone, catalog number: SH30027.01) media, supplemented with 10% fetal bovine serum (FBS) and 1% penicillin/streptomycin.

    Article Title: MnTE-2-PyP protects fibroblast mitochondria from hyperglycemia and radiation exposure
    Article Snippet: .. P3158 are normal human prostate fibroblasts that were immortalized by pBABE-hygro-hTERT plasmid (Addgene, plasmid cat #1773) and kindly gifted by Dr. J Tyson McDonald. .. RPMI-1640 (Hyclone, cat #: SH30027.01) media, supplemented with 10% fetal bovine serum (FBS) and 1% penicillin/streptomycin were used to culture P3158 cells.

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated FBS, 100 U/mL penicillin-streptomycin, and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalisation, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Retroviral:

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated foetal bovine serum, 100 U/mL penicillin-streptomycin and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalization, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated FBS, 100 U/mL penicillin-streptomycin, and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalisation, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Reverse Transcription:

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated foetal bovine serum, 100 U/mL penicillin-streptomycin and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalization, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated FBS, 100 U/mL penicillin-streptomycin, and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalisation, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Generated:

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated foetal bovine serum, 100 U/mL penicillin-streptomycin and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalization, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated FBS, 100 U/mL penicillin-streptomycin, and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalisation, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Transfection:

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated foetal bovine serum, 100 U/mL penicillin-streptomycin and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalization, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Article Title: Control of retrotransposon-driven activation of the interferon response by the double-stranded RNA binding protein DGCR8
    Article Snippet: Both were cultured in Gibco MEM, 15% heat-inactivated FBS, 100 U/mL penicillin-streptomycin, and 0.1 mM Non-Essential Amino Acids (Gibco). .. To achieve cellular immortalisation, retroviral particles encoding the human telomerase reverse transcriptase (hTERT) were generated by transfecting Phoenix helper-free packaging cells with the pBABE-hygro-hTERT plasmid (Addgene plasmid #1773) using FuGENE HD transfection reagent (Promega). .. Human primary fibroblasts (GM07215F and CRL2429) at 70% confluency were transduced with viral supernatants supplemented with 5 μg/mL Polybrene (Sigma-Aldrich) for 24 hours.

    Cell Culture:

    Article Title: MnTE-2-PyP, a manganese porphyrin, reduces cytotoxicity caused by irradiation in a diabetic environment through the induction of endogenous antioxidant defenses
    Article Snippet: .. P3158 cells are cultured from primary prostate tissue collected from the prostate of a heathy male and immortalized using a pBABE-hygro-hTERT plasmid (Addgene, plasmid #1773) and the immortalized cells were obtained from Dr. McDonald J. Tyson. .. P3158 cells were cultured in RPMI-1640 (Hyclone, catalog number: SH30027.01) media, supplemented with 10% fetal bovine serum (FBS) and 1% penicillin/streptomycin.



    Similar Products

    93
    Addgene inc pbabe hygro htert plasmid
    Pbabe Hygro Htert Plasmid, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/pbabe+hygro+htert+plasmid/pBABE-hygro-hTERT+(Plasmid+%231773)/pmc12961426-53-23-25
    Average 93 stars, based on 1 article reviews
    pbabe hygro htert plasmid - by Bioz Stars, 2026-10
    93/100 stars
      Buy from Supplier

    93
    Addgene inc pbabeygro htert plasmid
    Pbabeygro Htert Plasmid, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/pbabe+hygro+htert+plasmid/pBABE-hygro-hTERT+(Plasmid+%231773)/pm41784265-56-23-25
    Average 93 stars, based on 1 article reviews
    pbabeygro htert plasmid - by Bioz Stars, 2026-10
    93/100 stars
      Buy from Supplier

    93
    Addgene inc retrovirus carrying htert
    Biological activity evaluation of NDI-NIs and DEG-NDI-NIs. ( A ) Cell viability assays performed in human foreskin-derived fibroblast (BJ), expressing the human telomerase reverse transcriptase <t>hTERT</t> and SV40 early region (BJ-EHLT) or only hTERT (BJ-hTERT) and treated with the indicated compounds for 48 h at the final concentrations of 0.1, 0.5, and 1 μM. The results were expressed as the percentage of cell viability over the untreated cells. (B–D) BJ-EHLT cells were treated with the indicated compound for 24 h at a final concentration of 0.5 μM and, successively, processed for telomeric FISH combined with immunofluorescence experiments using the antibody against γH2AX, a marker of the DNA damage. ( B ) Percentage of γH2AX positive cells. ( C ) Quantitative analysis of the number of telomere induced foci (TIF) per cell and of the percentage of TIF positive cells. Cells with at least four γ-H2AX/Telo colocalizations were scored as TIF positive. ( D ) Representative images of the experiment in panels (B) and (C), acquired by confocal microscopy (magnification 63×). Scale bars indicate 10 μm. The histograms represent the mean values ± S.D. of three independent experiments. * P < .05, ** P < .01, *** P < .001, and **** P < .0001.
    Retrovirus Carrying Htert, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/pbabe+hygro+htert+plasmid/pBABE-hygro-hTERT+(Plasmid+%231773)/pmc12000870-179-10-13
    Average 93 stars, based on 1 article reviews
    retrovirus carrying htert - by Bioz Stars, 2026-10
    93/100 stars
      Buy from Supplier

    93
    Addgene inc human telomerase reverse transcriptase htert plasmid pbabe hygrohtert
    Biological activity evaluation of NDI-NIs and DEG-NDI-NIs. ( A ) Cell viability assays performed in human foreskin-derived fibroblast (BJ), expressing the human telomerase reverse transcriptase <t>hTERT</t> and SV40 early region (BJ-EHLT) or only hTERT (BJ-hTERT) and treated with the indicated compounds for 48 h at the final concentrations of 0.1, 0.5, and 1 μM. The results were expressed as the percentage of cell viability over the untreated cells. (B–D) BJ-EHLT cells were treated with the indicated compound for 24 h at a final concentration of 0.5 μM and, successively, processed for telomeric FISH combined with immunofluorescence experiments using the antibody against γH2AX, a marker of the DNA damage. ( B ) Percentage of γH2AX positive cells. ( C ) Quantitative analysis of the number of telomere induced foci (TIF) per cell and of the percentage of TIF positive cells. Cells with at least four γ-H2AX/Telo colocalizations were scored as TIF positive. ( D ) Representative images of the experiment in panels (B) and (C), acquired by confocal microscopy (magnification 63×). Scale bars indicate 10 μm. The histograms represent the mean values ± S.D. of three independent experiments. * P < .05, ** P < .01, *** P < .001, and **** P < .0001.
    Human Telomerase Reverse Transcriptase Htert Plasmid Pbabe Hygrohtert, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/pbabe+hygro+htert+plasmid/pBABE-hygro-hTERT+(Plasmid+%231773)/pm40127467-57-1-8
    Average 93 stars, based on 1 article reviews
    human telomerase reverse transcriptase htert plasmid pbabe hygrohtert - by Bioz Stars, 2026-10
    93/100 stars
      Buy from Supplier

    93
    Addgene inc pbabe hygro htert
    Biological activity evaluation of NDI-NIs and DEG-NDI-NIs. ( A ) Cell viability assays performed in human foreskin-derived fibroblast (BJ), expressing the human telomerase reverse transcriptase <t>hTERT</t> and SV40 early region (BJ-EHLT) or only hTERT (BJ-hTERT) and treated with the indicated compounds for 48 h at the final concentrations of 0.1, 0.5, and 1 μM. The results were expressed as the percentage of cell viability over the untreated cells. (B–D) BJ-EHLT cells were treated with the indicated compound for 24 h at a final concentration of 0.5 μM and, successively, processed for telomeric FISH combined with immunofluorescence experiments using the antibody against γH2AX, a marker of the DNA damage. ( B ) Percentage of γH2AX positive cells. ( C ) Quantitative analysis of the number of telomere induced foci (TIF) per cell and of the percentage of TIF positive cells. Cells with at least four γ-H2AX/Telo colocalizations were scored as TIF positive. ( D ) Representative images of the experiment in panels (B) and (C), acquired by confocal microscopy (magnification 63×). Scale bars indicate 10 μm. The histograms represent the mean values ± S.D. of three independent experiments. * P < .05, ** P < .01, *** P < .001, and **** P < .0001.
    Pbabe Hygro Htert, supplied by Addgene inc, used in various techniques. Bioz Stars score: 93/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/pbabe+hygro+htert+plasmid/pBABE-hygro-hTERT+(Plasmid+%231773)/pm40001613-157-24-25
    Average 93 stars, based on 1 article reviews
    pbabe hygro htert - by Bioz Stars, 2026-10
    93/100 stars
      Buy from Supplier

    90
    Addgene inc pbabe-hygro-htert plasmid
    Resources for hTERT immortalization.
    Pbabe Hygro Htert Plasmid, supplied by Addgene inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/pbabe+hygro+htert+plasmid/pbabe+hygro+htert+plasmid/pmc11641324-3-8-12
    Average 90 stars, based on 1 article reviews
    pbabe-hygro-htert plasmid - by Bioz Stars, 2026-10
    90/100 stars
      Buy from Supplier

    Image Search Results


    Biological activity evaluation of NDI-NIs and DEG-NDI-NIs. ( A ) Cell viability assays performed in human foreskin-derived fibroblast (BJ), expressing the human telomerase reverse transcriptase hTERT and SV40 early region (BJ-EHLT) or only hTERT (BJ-hTERT) and treated with the indicated compounds for 48 h at the final concentrations of 0.1, 0.5, and 1 μM. The results were expressed as the percentage of cell viability over the untreated cells. (B–D) BJ-EHLT cells were treated with the indicated compound for 24 h at a final concentration of 0.5 μM and, successively, processed for telomeric FISH combined with immunofluorescence experiments using the antibody against γH2AX, a marker of the DNA damage. ( B ) Percentage of γH2AX positive cells. ( C ) Quantitative analysis of the number of telomere induced foci (TIF) per cell and of the percentage of TIF positive cells. Cells with at least four γ-H2AX/Telo colocalizations were scored as TIF positive. ( D ) Representative images of the experiment in panels (B) and (C), acquired by confocal microscopy (magnification 63×). Scale bars indicate 10 μm. The histograms represent the mean values ± S.D. of three independent experiments. * P < .05, ** P < .01, *** P < .001, and **** P < .0001.

    Journal: Nucleic Acids Research

    Article Title: Naphthalene diimide-naphthalimide dyads promote telomere damage by selectively targeting multimeric G-quadruplexes

    doi: 10.1093/nar/gkaf301

    Figure Lengend Snippet: Biological activity evaluation of NDI-NIs and DEG-NDI-NIs. ( A ) Cell viability assays performed in human foreskin-derived fibroblast (BJ), expressing the human telomerase reverse transcriptase hTERT and SV40 early region (BJ-EHLT) or only hTERT (BJ-hTERT) and treated with the indicated compounds for 48 h at the final concentrations of 0.1, 0.5, and 1 μM. The results were expressed as the percentage of cell viability over the untreated cells. (B–D) BJ-EHLT cells were treated with the indicated compound for 24 h at a final concentration of 0.5 μM and, successively, processed for telomeric FISH combined with immunofluorescence experiments using the antibody against γH2AX, a marker of the DNA damage. ( B ) Percentage of γH2AX positive cells. ( C ) Quantitative analysis of the number of telomere induced foci (TIF) per cell and of the percentage of TIF positive cells. Cells with at least four γ-H2AX/Telo colocalizations were scored as TIF positive. ( D ) Representative images of the experiment in panels (B) and (C), acquired by confocal microscopy (magnification 63×). Scale bars indicate 10 μm. The histograms represent the mean values ± S.D. of three independent experiments. * P < .05, ** P < .01, *** P < .001, and **** P < .0001.

    Article Snippet: BJ-hTERT cells were obtained infecting primary BJ cells with a retrovirus carrying hTERT (Addgene plasmid #1773); BJ-EHLT derived from the transformation of BJ fibroblasts with hTERT and SV40 early region [ ].

    Techniques: Activity Assay, Derivative Assay, Expressing, Reverse Transcription, Concentration Assay, Immunofluorescence, Marker, Confocal Microscopy

    Biological activity evaluation of RHPS4 and Pyridostain. ( A , B ) Immunofluorescence evaluation of G4 structures in human cervical HeLa (A) and osteosarcoma U2OS (B) cancer cell lines. The cells were treated with the telomere-directed pentacyclic acridine 3,11-difluoro-6,8,13-trimethyl-8H-quino[4,3,2-kl]acridinium methosulfate (RHPS4) and the non-telomere-directed N,N′-bis (quinolinyl)pyridine-2,6-dicarboxamide (Pyridostatin, PDS) at the final concentration of 0.5 μM for 24 h and then processed for immunofluorescence with the specific antibody for G4 structures (anti-BG4). Left panel s : representative images acquired by confocal microscopy (magnification 63×). G4 structures are labeled in red and the nuclei are stained with DAPI (blue). 4× enlargements of selected regions (white squares) are shown. Scale bars indicate 20 μm. Right panels: Quantification of the number of G4 structures per cell. At least 30 cells for condition were counted. The histograms represent the mean values ± S.D. of three independent experiments. * P < .05, ** P < .01, and *** P < .001. ( C , D ) Cell viability assays performed in human foreskin-derived fibroblast (BJ), expressing the human telomerase reverse transcriptase hTERT and SV40 early region (BJ-EHLT) or only hTERT (BJ-hTERT) and treated with PDS and RHPS4 at the final concentrations of 0.1, 0.5, and 1 μM for 48 (C) and 96 (D) h. The results were expressed as the percentage of cell viability over the untreated cells. (E–G) BJ-EHLT cells were treated with the indicated compound for 24 h at a final concentration of 0.5 μM and, successively, processed for telomeric FISH combined with immunofluorescence experiments using the antibody against γH2AX, a marker of the DNA damage. ( E ) Representative images acquired by confocal microscopy (magnification 63×). Scale bars indicate 10 μm. ( F ) Percentage of γH2AX positive cells. ( G ) Quantitative analysis of the number of TIF per cell and of the percentage of TIF positive cells. Cells with at least four γ-H2AX/Telo colocalizations were scored as TIF positive. The histograms represent the mean values ± S.D. of three independent experiments. * P < .05, ** P < .01, *** P < .001, and **** P < .0001.

    Journal: Nucleic Acids Research

    Article Title: Naphthalene diimide-naphthalimide dyads promote telomere damage by selectively targeting multimeric G-quadruplexes

    doi: 10.1093/nar/gkaf301

    Figure Lengend Snippet: Biological activity evaluation of RHPS4 and Pyridostain. ( A , B ) Immunofluorescence evaluation of G4 structures in human cervical HeLa (A) and osteosarcoma U2OS (B) cancer cell lines. The cells were treated with the telomere-directed pentacyclic acridine 3,11-difluoro-6,8,13-trimethyl-8H-quino[4,3,2-kl]acridinium methosulfate (RHPS4) and the non-telomere-directed N,N′-bis (quinolinyl)pyridine-2,6-dicarboxamide (Pyridostatin, PDS) at the final concentration of 0.5 μM for 24 h and then processed for immunofluorescence with the specific antibody for G4 structures (anti-BG4). Left panel s : representative images acquired by confocal microscopy (magnification 63×). G4 structures are labeled in red and the nuclei are stained with DAPI (blue). 4× enlargements of selected regions (white squares) are shown. Scale bars indicate 20 μm. Right panels: Quantification of the number of G4 structures per cell. At least 30 cells for condition were counted. The histograms represent the mean values ± S.D. of three independent experiments. * P < .05, ** P < .01, and *** P < .001. ( C , D ) Cell viability assays performed in human foreskin-derived fibroblast (BJ), expressing the human telomerase reverse transcriptase hTERT and SV40 early region (BJ-EHLT) or only hTERT (BJ-hTERT) and treated with PDS and RHPS4 at the final concentrations of 0.1, 0.5, and 1 μM for 48 (C) and 96 (D) h. The results were expressed as the percentage of cell viability over the untreated cells. (E–G) BJ-EHLT cells were treated with the indicated compound for 24 h at a final concentration of 0.5 μM and, successively, processed for telomeric FISH combined with immunofluorescence experiments using the antibody against γH2AX, a marker of the DNA damage. ( E ) Representative images acquired by confocal microscopy (magnification 63×). Scale bars indicate 10 μm. ( F ) Percentage of γH2AX positive cells. ( G ) Quantitative analysis of the number of TIF per cell and of the percentage of TIF positive cells. Cells with at least four γ-H2AX/Telo colocalizations were scored as TIF positive. The histograms represent the mean values ± S.D. of three independent experiments. * P < .05, ** P < .01, *** P < .001, and **** P < .0001.

    Article Snippet: BJ-hTERT cells were obtained infecting primary BJ cells with a retrovirus carrying hTERT (Addgene plasmid #1773); BJ-EHLT derived from the transformation of BJ fibroblasts with hTERT and SV40 early region [ ].

    Techniques: Activity Assay, Immunofluorescence, Concentration Assay, Confocal Microscopy, Labeling, Staining, Derivative Assay, Expressing, Reverse Transcription, Marker

    Resources for hTERT immortalization.

    Journal: International Journal of Molecular Sciences

    Article Title: Review of hTERT-Immortalized Cells: How to Assess Immortality and Confirm Identity

    doi: 10.3390/ijms252313054

    Figure Lengend Snippet: Resources for hTERT immortalization.

    Article Snippet: [ ] , foreskin fibroblasts , pBabe-hygro-hTERT and pSG5-LT plasmids were from Addgene. All restriction enzymes and Phusion high-fidelity DNA polymerase were from New England Biolabs. The plasmids 5′-PTK-3′ and hyperactive piggyBac transposase (PBase) were kind gifts from Allan Bradley (Wellcome Trust Sanger Institute, Hinxton, United Kingdom). A 2.5-kb fragment of hTERT was released from pBabe-hygro-hTERT with EcoRI and BamHI and ligated into pSKCAG (termed pSKCAGhT1). The coding fragments of hTERT (hT2), enhanced green fluorescent protein (EGFP), and SV40LT were amplified from pBabe-hygro-hTERT, pEGFP, and pEGFP-N3 (Invitrogen)..

    Techniques: Transduction, Selection, Sequencing, Amplification, Plasmid Preparation, Construct, Expressing, Control, Infection, Virus, Produced, Retroviral, Clone Assay, Stable Transfection, Transfection, Recombinant, Ligation, Cloning, Generated, Cell Culture