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invivo mab rat igg2a isotype control  (Bio X Cell)


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    Bio X Cell invivo mab rat igg2a isotype control
    A , C57/BL6 mice were inoculated with murine Braf V600E Pten -/- melanoma cells (YUMM1.1), expressing a shRNA targeting ASS1 or a shRNA control. When tumors reached a mean of 100mm3, mice were treated with anti-PD-1 (4mg/kg-1) or isotype <t>IgG</t> control. The data are presented as the mean ± SEM for each group (n=10 mice per group). p-values were calculated using two-way ANOVA. B , Percentage of CD45-positive cells in tumors was determined by flow cytometry in tumors presented in B. The data are presented as the mean ± SEM (YUMM1.1shCTL n=9 tumors ; YUMM1.1shASS1 n=10 tumors). C , Deconvolution performed using CIBERSORTx performed on tumors from the experiment presented in A. D , Ratio CD8+ cells to malignant cells (Mal.) from the panel C is presented in tumor from the experiment presented in the panel A. E , Representative immunostaining of CD8+ T lymphocytes (red, CD8a) and nuclei (blue, DAPI) on frozen tumor sections of mice from panel A. F, Representation of CD8+ cells shown in D, the data are presented as the mean ± SEM (n=9 tumors). G. Representative immunostaining of CD8+ T cells and granzyme B on frozen tumor sections of mice from panel A.
    Invivo Mab Rat Igg2a Isotype Control, supplied by Bio X Cell, used in various techniques. Bioz Stars score: 98/100, based on 817 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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    invivo mab rat igg2a isotype control - by Bioz Stars, 2026-09
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    Images

    1) Product Images from "Arginine synthesis pathway and ASS1 play a critical role in mRNA translation reprogramming and ICI resistance in cutaneous melanoma"

    Article Title: Arginine synthesis pathway and ASS1 play a critical role in mRNA translation reprogramming and ICI resistance in cutaneous melanoma

    Journal: bioRxiv

    doi: 10.64898/2026.03.17.712479

    A , C57/BL6 mice were inoculated with murine Braf V600E Pten -/- melanoma cells (YUMM1.1), expressing a shRNA targeting ASS1 or a shRNA control. When tumors reached a mean of 100mm3, mice were treated with anti-PD-1 (4mg/kg-1) or isotype IgG control. The data are presented as the mean ± SEM for each group (n=10 mice per group). p-values were calculated using two-way ANOVA. B , Percentage of CD45-positive cells in tumors was determined by flow cytometry in tumors presented in B. The data are presented as the mean ± SEM (YUMM1.1shCTL n=9 tumors ; YUMM1.1shASS1 n=10 tumors). C , Deconvolution performed using CIBERSORTx performed on tumors from the experiment presented in A. D , Ratio CD8+ cells to malignant cells (Mal.) from the panel C is presented in tumor from the experiment presented in the panel A. E , Representative immunostaining of CD8+ T lymphocytes (red, CD8a) and nuclei (blue, DAPI) on frozen tumor sections of mice from panel A. F, Representation of CD8+ cells shown in D, the data are presented as the mean ± SEM (n=9 tumors). G. Representative immunostaining of CD8+ T cells and granzyme B on frozen tumor sections of mice from panel A.
    Figure Legend Snippet: A , C57/BL6 mice were inoculated with murine Braf V600E Pten -/- melanoma cells (YUMM1.1), expressing a shRNA targeting ASS1 or a shRNA control. When tumors reached a mean of 100mm3, mice were treated with anti-PD-1 (4mg/kg-1) or isotype IgG control. The data are presented as the mean ± SEM for each group (n=10 mice per group). p-values were calculated using two-way ANOVA. B , Percentage of CD45-positive cells in tumors was determined by flow cytometry in tumors presented in B. The data are presented as the mean ± SEM (YUMM1.1shCTL n=9 tumors ; YUMM1.1shASS1 n=10 tumors). C , Deconvolution performed using CIBERSORTx performed on tumors from the experiment presented in A. D , Ratio CD8+ cells to malignant cells (Mal.) from the panel C is presented in tumor from the experiment presented in the panel A. E , Representative immunostaining of CD8+ T lymphocytes (red, CD8a) and nuclei (blue, DAPI) on frozen tumor sections of mice from panel A. F, Representation of CD8+ cells shown in D, the data are presented as the mean ± SEM (n=9 tumors). G. Representative immunostaining of CD8+ T cells and granzyme B on frozen tumor sections of mice from panel A.

    Techniques Used: Expressing, shRNA, Control, Flow Cytometry, Immunostaining

    A , Immunoblot showing the expression levels of indicated protein in ICI-resistant YUMM1.1 cell line after 3 days of treatment with MDLA. HSP90 serves as a loading control. B , ASS1 enzymatic activity was performed in ICI-resistant YUMM1.1 cell line after 3 days of treatment with (n=3; mean ± SEM). C , Intracellular concentration of arginine was measure in ICI-resistant YUMM1.1 cells after 3 days of treatment with MDLA. (n=3; mean ± SEM). D. Schematic representation of the impact of arginine on the control upstream of mTORC1. E. Immunoprecipaption was performed on WM9 cells transfected with HA-tagged CASTOR1 and cultured for 3 days in the presence of different concentration of arginine and MDLA. Immunoblot showing the expression levels of indicated protein. F , Immunoblot showing the expression levels of indicated protein in ICI-resistant YUMM1.1 cell line. β-actine was use as a loading control. G , Immunoblot showing the expression levels of indicated protein in WM9 melanoma cell line. H , Renilla over Firefly luminescent ratio quantification in ICI-resistant YUMM1.1 cell line. I , Renilla over Firefly luminescent ratio quantification in WM9 melanoma cell line. J , YUMM1.1 cells treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). K , WM9 cells treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). L , Immunoblot showing the expression levels of indicated protein in cells from tumors of patients with metastatic melanoma. HSP90 serves as a loading control. M , Renilla over Firefly luminescent ratio quantification in cells from tumors of patients with metastatic melanoma (n=3; mean ± SEM). N , Cells isolated from tumors of patients with metastatic melanoma were treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). O , C57BL/6 mice were inoculated with murine Braf V600E Pten -/- melanoma cells (YUMM1.1). When tumors reached a mean of 100mm 3 , mice were treated with MDLA (700mg.kg-1) or PBS, twice a day. Two days after the beginning of the MDLA treatment, mice were treated with anti-PD-1 (4mg/kg-1) or isotype IgG control, once per day, every two days, 3 times. Mice were treated with an additional dose of anti-PD-1 or isotype IgG control at day 24. Tumor growth was monitored for 27 days. The data representing the tumor growth are presented as the mean ± SEM for each group (n=10 mice per group). p -values were calculated using two-way ANOVA. P , Percentage of CD45-positive cells in tumors was determined by flow cytometry in tumors presented in P. The data are presented as a ratio of percentage between CD45-positive cells versus CD45-negative cells. (n=10 tumors per group, mean ± SEM). Q , Percentage of CD45 and CD8a-double positive cells in tumors, determined by flow cytometry in tumors presented in P. (n=10 tumors per group, mean ± SEM).
    Figure Legend Snippet: A , Immunoblot showing the expression levels of indicated protein in ICI-resistant YUMM1.1 cell line after 3 days of treatment with MDLA. HSP90 serves as a loading control. B , ASS1 enzymatic activity was performed in ICI-resistant YUMM1.1 cell line after 3 days of treatment with (n=3; mean ± SEM). C , Intracellular concentration of arginine was measure in ICI-resistant YUMM1.1 cells after 3 days of treatment with MDLA. (n=3; mean ± SEM). D. Schematic representation of the impact of arginine on the control upstream of mTORC1. E. Immunoprecipaption was performed on WM9 cells transfected with HA-tagged CASTOR1 and cultured for 3 days in the presence of different concentration of arginine and MDLA. Immunoblot showing the expression levels of indicated protein. F , Immunoblot showing the expression levels of indicated protein in ICI-resistant YUMM1.1 cell line. β-actine was use as a loading control. G , Immunoblot showing the expression levels of indicated protein in WM9 melanoma cell line. H , Renilla over Firefly luminescent ratio quantification in ICI-resistant YUMM1.1 cell line. I , Renilla over Firefly luminescent ratio quantification in WM9 melanoma cell line. J , YUMM1.1 cells treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). K , WM9 cells treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). L , Immunoblot showing the expression levels of indicated protein in cells from tumors of patients with metastatic melanoma. HSP90 serves as a loading control. M , Renilla over Firefly luminescent ratio quantification in cells from tumors of patients with metastatic melanoma (n=3; mean ± SEM). N , Cells isolated from tumors of patients with metastatic melanoma were treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). O , C57BL/6 mice were inoculated with murine Braf V600E Pten -/- melanoma cells (YUMM1.1). When tumors reached a mean of 100mm 3 , mice were treated with MDLA (700mg.kg-1) or PBS, twice a day. Two days after the beginning of the MDLA treatment, mice were treated with anti-PD-1 (4mg/kg-1) or isotype IgG control, once per day, every two days, 3 times. Mice were treated with an additional dose of anti-PD-1 or isotype IgG control at day 24. Tumor growth was monitored for 27 days. The data representing the tumor growth are presented as the mean ± SEM for each group (n=10 mice per group). p -values were calculated using two-way ANOVA. P , Percentage of CD45-positive cells in tumors was determined by flow cytometry in tumors presented in P. The data are presented as a ratio of percentage between CD45-positive cells versus CD45-negative cells. (n=10 tumors per group, mean ± SEM). Q , Percentage of CD45 and CD8a-double positive cells in tumors, determined by flow cytometry in tumors presented in P. (n=10 tumors per group, mean ± SEM).

    Techniques Used: Western Blot, Expressing, Control, Activity Assay, Concentration Assay, Transfection, Cell Culture, Positive Control, Isolation, Flow Cytometry

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    Bio X Cell mouse mab igg2a isotype control
    (A) lif expression in the scRNA-seq from mouse livers with acetaminophen (APAP)-induced injury at the indicated time points. (B) lif expression in the scRNA-seq across cell types in the livers of mouse with APAP injury at the indicated time points. (C) lif expression in spatial transcriptomics of liver samples from healthy (HEA2) and APAP injury (APAP1_S2) humans. (D&E) Serum mLIF levels at 24, 48, and 72 h after partial hepatectomy (PHx) in mice treated with <t>IgG</t> (D) or anti-LIF neutralizing antibody (E). (F) Resected liver-to-body weight ratio in mice treated with anti-LIF antibody or control IgG. (G) Liver-to-body weight ratio at 24, 48, 72 h and 1-week post-PHx in mice treated with anti-LIF antibody or control IgG. (H) Immunofluorescence staining of liver sections at 48 h post-PHx from mice treated with anti-LIF antibody or control IgG. DAPI (blue), PCNA (red), CK19 (purple). Scale bars: 100 μm. (I) Quantification of PCNA-positive hepatocytes ratio at 48 h post-PHx in mice treated with anti-LIF antibody or control IgG.
    Mouse Mab Igg2a Isotype Control, supplied by Bio X Cell, used in various techniques. Bioz Stars score: 96/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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    Cell Signaling Technology Inc mouse igg2a isotype control
    (A) lif expression in the scRNA-seq from mouse livers with acetaminophen (APAP)-induced injury at the indicated time points. (B) lif expression in the scRNA-seq across cell types in the livers of mouse with APAP injury at the indicated time points. (C) lif expression in spatial transcriptomics of liver samples from healthy (HEA2) and APAP injury (APAP1_S2) humans. (D&E) Serum mLIF levels at 24, 48, and 72 h after partial hepatectomy (PHx) in mice treated with <t>IgG</t> (D) or anti-LIF neutralizing antibody (E). (F) Resected liver-to-body weight ratio in mice treated with anti-LIF antibody or control IgG. (G) Liver-to-body weight ratio at 24, 48, 72 h and 1-week post-PHx in mice treated with anti-LIF antibody or control IgG. (H) Immunofluorescence staining of liver sections at 48 h post-PHx from mice treated with anti-LIF antibody or control IgG. DAPI (blue), PCNA (red), CK19 (purple). Scale bars: 100 μm. (I) Quantification of PCNA-positive hepatocytes ratio at 48 h post-PHx in mice treated with anti-LIF antibody or control IgG.
    Mouse Igg2a Isotype Control, supplied by Cell Signaling Technology Inc, used in various techniques. Bioz Stars score: 95/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/isotype+control+igg2a+mab/Mouse+mAb+IgG2a+Isotype+Control/pm41444258-425-28-32
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    Cell Signaling Technology Inc igg isotype
    (A) lif expression in the scRNA-seq from mouse livers with acetaminophen (APAP)-induced injury at the indicated time points. (B) lif expression in the scRNA-seq across cell types in the livers of mouse with APAP injury at the indicated time points. (C) lif expression in spatial transcriptomics of liver samples from healthy (HEA2) and APAP injury (APAP1_S2) humans. (D&E) Serum mLIF levels at 24, 48, and 72 h after partial hepatectomy (PHx) in mice treated with <t>IgG</t> (D) or anti-LIF neutralizing antibody (E). (F) Resected liver-to-body weight ratio in mice treated with anti-LIF antibody or control IgG. (G) Liver-to-body weight ratio at 24, 48, 72 h and 1-week post-PHx in mice treated with anti-LIF antibody or control IgG. (H) Immunofluorescence staining of liver sections at 48 h post-PHx from mice treated with anti-LIF antibody or control IgG. DAPI (blue), PCNA (red), CK19 (purple). Scale bars: 100 μm. (I) Quantification of PCNA-positive hepatocytes ratio at 48 h post-PHx in mice treated with anti-LIF antibody or control IgG.
    Igg Isotype, supplied by Cell Signaling Technology Inc, 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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    Cell Signaling Technology Inc mouse monoclonal antibody
    (A) lif expression in the scRNA-seq from mouse livers with acetaminophen (APAP)-induced injury at the indicated time points. (B) lif expression in the scRNA-seq across cell types in the livers of mouse with APAP injury at the indicated time points. (C) lif expression in spatial transcriptomics of liver samples from healthy (HEA2) and APAP injury (APAP1_S2) humans. (D&E) Serum mLIF levels at 24, 48, and 72 h after partial hepatectomy (PHx) in mice treated with <t>IgG</t> (D) or anti-LIF neutralizing antibody (E). (F) Resected liver-to-body weight ratio in mice treated with anti-LIF antibody or control IgG. (G) Liver-to-body weight ratio at 24, 48, 72 h and 1-week post-PHx in mice treated with anti-LIF antibody or control IgG. (H) Immunofluorescence staining of liver sections at 48 h post-PHx from mice treated with anti-LIF antibody or control IgG. DAPI (blue), PCNA (red), CK19 (purple). Scale bars: 100 μm. (I) Quantification of PCNA-positive hepatocytes ratio at 48 h post-PHx in mice treated with anti-LIF antibody or control IgG.
    Mouse Monoclonal Antibody, supplied by Cell Signaling Technology Inc, 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


    (a) Relative amino acid levels in UFM1 -knockout versus control cells ( n = 3 biologically independent samples). Horizontal dotted lines mark a P value of 0.05 (y-axis). (b) Alanine levels in UFM1 -knockout and control cells (mean ± s.d., n = 3 biologically independent samples). Two-tailed Welch’s t -test. ** P < 0.005, * P < 0.01. (c) Schematic depicting exogenous alanine uptake and de novo synthesis from pyruvate. Most human cancer lines display near-selective expression of GPT2 relative to GPT1 . (d) Schematic depicting the incorporation of 13 C from [U- 13 C] glucose into alanine and lactate. (e, f) Fractional labeling of alanine (e) and pyruvate (f) in UFM1 -knockout and control cells (mean ± s.d., n = 3 biologically independent samples). Two-tailed Welch’s t -test. Values above brackets indicate differences in fractional labeling between bars. (g) Immunoblot for expression of GPT2 in UFM1 -knockout and control cells. ACTN1 served as the loading control. (h) Relative growth of UFM1 -knockout versus control cells (mean ± s.d., n = 3 biologically independent samples). Two-tailed Welch’s t -test comparing the respective mean ± s.d. (bar) versus mean ± s.d. (control cells) between bars. (i) Schematic of RPL26, a component of the 60S subunit. RPL26 is the primary UFMylation substrate and is modified specifically on ER-localized ribosomes. (j, k) Immunoblots for expression of RPL26 (j) and GPT2 (k) in UFSP2 -knockout and control cells. RAPTOR served as the loading control in both cases. (l, m) Immunoblots for expression of GPT2, RPL26 (l) and UFM1 (m) in whole-cell lysates (WC) and GPT2-immunopurified fractions (IP:GPT2) from UFSP2 -knockout cells. IgG isotype control (IP:IgG) served as a negative control. ACTN1 served as the WC loading control. To prevent interference from the IgG heavy chain (∼50-55 kDa) with GPT2 signal (∼58 kDa), a light chain-specific secondary antibody was used for the GPT2 immunoblot. Asterisks in (l) denote non-specific bands. In b and h, values above brackets indicate fold change between bars. In h and j-m, H, HPLM-defined concentration; R, RPMI-defined concentration. In g and k-m, L.B., low brightness; H.B., high brightness.

    Journal: bioRxiv

    Article Title: Dynamic UFMylation governs cellular fitness by coordinating multi-organelle proteostasis

    doi: 10.64898/2026.03.27.714830

    Figure Lengend Snippet: (a) Relative amino acid levels in UFM1 -knockout versus control cells ( n = 3 biologically independent samples). Horizontal dotted lines mark a P value of 0.05 (y-axis). (b) Alanine levels in UFM1 -knockout and control cells (mean ± s.d., n = 3 biologically independent samples). Two-tailed Welch’s t -test. ** P < 0.005, * P < 0.01. (c) Schematic depicting exogenous alanine uptake and de novo synthesis from pyruvate. Most human cancer lines display near-selective expression of GPT2 relative to GPT1 . (d) Schematic depicting the incorporation of 13 C from [U- 13 C] glucose into alanine and lactate. (e, f) Fractional labeling of alanine (e) and pyruvate (f) in UFM1 -knockout and control cells (mean ± s.d., n = 3 biologically independent samples). Two-tailed Welch’s t -test. Values above brackets indicate differences in fractional labeling between bars. (g) Immunoblot for expression of GPT2 in UFM1 -knockout and control cells. ACTN1 served as the loading control. (h) Relative growth of UFM1 -knockout versus control cells (mean ± s.d., n = 3 biologically independent samples). Two-tailed Welch’s t -test comparing the respective mean ± s.d. (bar) versus mean ± s.d. (control cells) between bars. (i) Schematic of RPL26, a component of the 60S subunit. RPL26 is the primary UFMylation substrate and is modified specifically on ER-localized ribosomes. (j, k) Immunoblots for expression of RPL26 (j) and GPT2 (k) in UFSP2 -knockout and control cells. RAPTOR served as the loading control in both cases. (l, m) Immunoblots for expression of GPT2, RPL26 (l) and UFM1 (m) in whole-cell lysates (WC) and GPT2-immunopurified fractions (IP:GPT2) from UFSP2 -knockout cells. IgG isotype control (IP:IgG) served as a negative control. ACTN1 served as the WC loading control. To prevent interference from the IgG heavy chain (∼50-55 kDa) with GPT2 signal (∼58 kDa), a light chain-specific secondary antibody was used for the GPT2 immunoblot. Asterisks in (l) denote non-specific bands. In b and h, values above brackets indicate fold change between bars. In h and j-m, H, HPLM-defined concentration; R, RPMI-defined concentration. In g and k-m, L.B., low brightness; H.B., high brightness.

    Article Snippet: From each clarified lysate, 800 μg protein was mixed with 2 μg of either anti-GPT2 (Santa Cruz Biotechnology sc-398383) or an IgG2a isotype control (Cell Signaling Technology 61656) in a total volume of 200 μL, then incubated with rotation overnight at 4°C.

    Techniques: Knock-Out, Control, Two Tailed Test, Expressing, Labeling, Western Blot, Modification, Negative Control, Concentration Assay

    A , C57/BL6 mice were inoculated with murine Braf V600E Pten -/- melanoma cells (YUMM1.1), expressing a shRNA targeting ASS1 or a shRNA control. When tumors reached a mean of 100mm3, mice were treated with anti-PD-1 (4mg/kg-1) or isotype IgG control. The data are presented as the mean ± SEM for each group (n=10 mice per group). p-values were calculated using two-way ANOVA. B , Percentage of CD45-positive cells in tumors was determined by flow cytometry in tumors presented in B. The data are presented as the mean ± SEM (YUMM1.1shCTL n=9 tumors ; YUMM1.1shASS1 n=10 tumors). C , Deconvolution performed using CIBERSORTx performed on tumors from the experiment presented in A. D , Ratio CD8+ cells to malignant cells (Mal.) from the panel C is presented in tumor from the experiment presented in the panel A. E , Representative immunostaining of CD8+ T lymphocytes (red, CD8a) and nuclei (blue, DAPI) on frozen tumor sections of mice from panel A. F, Representation of CD8+ cells shown in D, the data are presented as the mean ± SEM (n=9 tumors). G. Representative immunostaining of CD8+ T cells and granzyme B on frozen tumor sections of mice from panel A.

    Journal: bioRxiv

    Article Title: Arginine synthesis pathway and ASS1 play a critical role in mRNA translation reprogramming and ICI resistance in cutaneous melanoma

    doi: 10.64898/2026.03.17.712479

    Figure Lengend Snippet: A , C57/BL6 mice were inoculated with murine Braf V600E Pten -/- melanoma cells (YUMM1.1), expressing a shRNA targeting ASS1 or a shRNA control. When tumors reached a mean of 100mm3, mice were treated with anti-PD-1 (4mg/kg-1) or isotype IgG control. The data are presented as the mean ± SEM for each group (n=10 mice per group). p-values were calculated using two-way ANOVA. B , Percentage of CD45-positive cells in tumors was determined by flow cytometry in tumors presented in B. The data are presented as the mean ± SEM (YUMM1.1shCTL n=9 tumors ; YUMM1.1shASS1 n=10 tumors). C , Deconvolution performed using CIBERSORTx performed on tumors from the experiment presented in A. D , Ratio CD8+ cells to malignant cells (Mal.) from the panel C is presented in tumor from the experiment presented in the panel A. E , Representative immunostaining of CD8+ T lymphocytes (red, CD8a) and nuclei (blue, DAPI) on frozen tumor sections of mice from panel A. F, Representation of CD8+ cells shown in D, the data are presented as the mean ± SEM (n=9 tumors). G. Representative immunostaining of CD8+ T cells and granzyme B on frozen tumor sections of mice from panel A.

    Article Snippet: Antibodies InVivo Mab anti-mouse PD-1 (CD279), clone 29F.1A12 or InVivo Mab rat IgG2a isotype control, clone 2A3 were purchased from BioXCell, diluted in PBS and injected intraperitoneally (100μg in 100μL of PBS; 4mg.kg -1 per mouse).

    Techniques: Expressing, shRNA, Control, Flow Cytometry, Immunostaining

    A , Immunoblot showing the expression levels of indicated protein in ICI-resistant YUMM1.1 cell line after 3 days of treatment with MDLA. HSP90 serves as a loading control. B , ASS1 enzymatic activity was performed in ICI-resistant YUMM1.1 cell line after 3 days of treatment with (n=3; mean ± SEM). C , Intracellular concentration of arginine was measure in ICI-resistant YUMM1.1 cells after 3 days of treatment with MDLA. (n=3; mean ± SEM). D. Schematic representation of the impact of arginine on the control upstream of mTORC1. E. Immunoprecipaption was performed on WM9 cells transfected with HA-tagged CASTOR1 and cultured for 3 days in the presence of different concentration of arginine and MDLA. Immunoblot showing the expression levels of indicated protein. F , Immunoblot showing the expression levels of indicated protein in ICI-resistant YUMM1.1 cell line. β-actine was use as a loading control. G , Immunoblot showing the expression levels of indicated protein in WM9 melanoma cell line. H , Renilla over Firefly luminescent ratio quantification in ICI-resistant YUMM1.1 cell line. I , Renilla over Firefly luminescent ratio quantification in WM9 melanoma cell line. J , YUMM1.1 cells treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). K , WM9 cells treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). L , Immunoblot showing the expression levels of indicated protein in cells from tumors of patients with metastatic melanoma. HSP90 serves as a loading control. M , Renilla over Firefly luminescent ratio quantification in cells from tumors of patients with metastatic melanoma (n=3; mean ± SEM). N , Cells isolated from tumors of patients with metastatic melanoma were treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). O , C57BL/6 mice were inoculated with murine Braf V600E Pten -/- melanoma cells (YUMM1.1). When tumors reached a mean of 100mm 3 , mice were treated with MDLA (700mg.kg-1) or PBS, twice a day. Two days after the beginning of the MDLA treatment, mice were treated with anti-PD-1 (4mg/kg-1) or isotype IgG control, once per day, every two days, 3 times. Mice were treated with an additional dose of anti-PD-1 or isotype IgG control at day 24. Tumor growth was monitored for 27 days. The data representing the tumor growth are presented as the mean ± SEM for each group (n=10 mice per group). p -values were calculated using two-way ANOVA. P , Percentage of CD45-positive cells in tumors was determined by flow cytometry in tumors presented in P. The data are presented as a ratio of percentage between CD45-positive cells versus CD45-negative cells. (n=10 tumors per group, mean ± SEM). Q , Percentage of CD45 and CD8a-double positive cells in tumors, determined by flow cytometry in tumors presented in P. (n=10 tumors per group, mean ± SEM).

    Journal: bioRxiv

    Article Title: Arginine synthesis pathway and ASS1 play a critical role in mRNA translation reprogramming and ICI resistance in cutaneous melanoma

    doi: 10.64898/2026.03.17.712479

    Figure Lengend Snippet: A , Immunoblot showing the expression levels of indicated protein in ICI-resistant YUMM1.1 cell line after 3 days of treatment with MDLA. HSP90 serves as a loading control. B , ASS1 enzymatic activity was performed in ICI-resistant YUMM1.1 cell line after 3 days of treatment with (n=3; mean ± SEM). C , Intracellular concentration of arginine was measure in ICI-resistant YUMM1.1 cells after 3 days of treatment with MDLA. (n=3; mean ± SEM). D. Schematic representation of the impact of arginine on the control upstream of mTORC1. E. Immunoprecipaption was performed on WM9 cells transfected with HA-tagged CASTOR1 and cultured for 3 days in the presence of different concentration of arginine and MDLA. Immunoblot showing the expression levels of indicated protein. F , Immunoblot showing the expression levels of indicated protein in ICI-resistant YUMM1.1 cell line. β-actine was use as a loading control. G , Immunoblot showing the expression levels of indicated protein in WM9 melanoma cell line. H , Renilla over Firefly luminescent ratio quantification in ICI-resistant YUMM1.1 cell line. I , Renilla over Firefly luminescent ratio quantification in WM9 melanoma cell line. J , YUMM1.1 cells treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). K , WM9 cells treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). L , Immunoblot showing the expression levels of indicated protein in cells from tumors of patients with metastatic melanoma. HSP90 serves as a loading control. M , Renilla over Firefly luminescent ratio quantification in cells from tumors of patients with metastatic melanoma (n=3; mean ± SEM). N , Cells isolated from tumors of patients with metastatic melanoma were treated or not with MDLA were then pulsed for 30 min with [ 35 S]Cys/Met, and the incorporation of 35 S into proteins was quantified and normalized to the total protein amount. Cells treated 30 minutes with 100µg/mL of cycloheximide (CHX) are used as a positive control. The data are presented as the mean (n = 3). O , C57BL/6 mice were inoculated with murine Braf V600E Pten -/- melanoma cells (YUMM1.1). When tumors reached a mean of 100mm 3 , mice were treated with MDLA (700mg.kg-1) or PBS, twice a day. Two days after the beginning of the MDLA treatment, mice were treated with anti-PD-1 (4mg/kg-1) or isotype IgG control, once per day, every two days, 3 times. Mice were treated with an additional dose of anti-PD-1 or isotype IgG control at day 24. Tumor growth was monitored for 27 days. The data representing the tumor growth are presented as the mean ± SEM for each group (n=10 mice per group). p -values were calculated using two-way ANOVA. P , Percentage of CD45-positive cells in tumors was determined by flow cytometry in tumors presented in P. The data are presented as a ratio of percentage between CD45-positive cells versus CD45-negative cells. (n=10 tumors per group, mean ± SEM). Q , Percentage of CD45 and CD8a-double positive cells in tumors, determined by flow cytometry in tumors presented in P. (n=10 tumors per group, mean ± SEM).

    Article Snippet: Antibodies InVivo Mab anti-mouse PD-1 (CD279), clone 29F.1A12 or InVivo Mab rat IgG2a isotype control, clone 2A3 were purchased from BioXCell, diluted in PBS and injected intraperitoneally (100μg in 100μL of PBS; 4mg.kg -1 per mouse).

    Techniques: Western Blot, Expressing, Control, Activity Assay, Concentration Assay, Transfection, Cell Culture, Positive Control, Isolation, Flow Cytometry

    A Immunoblot comparing lysates of ipsilateral cortices from wild-type and Rubcn-mutant mice probed with Rubicon A (RbA) antibody. B Western blot showing immunoprecipitation of Rubicon protein from brain lysates of wild-type and Rubcn-mutant mice using Rubicon A (RbA) and Rubicon B (RbA) antibodies. * represents background signal. Blot is probed with RbB antibody. C Rubicon protein (amino-acid) sequence highlighting peptides (p1-p12 in blue) used for peptide mapping of wild-type and mutant RUBCN proteins. Red circle is highlighting Met296 as a potential alternative translation initiation site. D Normalized peptide abundance across the length of RUBCN protein in wild-type and Rubcn-mutant immunoprecipitates using RbA and RbB antibodies. E Comparative enrichment analysis showing fold change of proteins enriched in wild-type over Rubcn-mutant immunoprecipitates using RbA and RbB antibodies. F Immunoprecipitation assay showing lysates of HEK293T cells transfected with indicated plasmids for 24 h and immunoprecipitated with anti-FLAG or anti-HA agarose beads. Left: Immunoblot of immunoprecipitates with the indicated antibodies. Right: Fold change of NRROS signal in EGFP-Rubicon-Flag and Nrros-Myc/His (Nrros+Rubicon1-3) co-transfected cells to EGFP-C1 and Nrros-Myc/His (Nrros ONLY) co-transfected cells. Each FLAG IP sample was normalized to corresponding HA IP sample for quantification. Sample size (n) = 3 biological replicates for EGFP-Rubicon-Flag and Nrros-Myc/His co-transfected cells. G Immunoblot of whole cell lysates used for immunoprecipitation assay in F. H Immunoprecipitation assay showing lysates of HEK293T cells transfected with indicated plasmids for 24 h and immunoprecipitated with anti-MYC or anti-IgG antibodies. Left: Immunoblot of immunoprecipitates with the indicated antibodies. Right: Fold change of RUBCN signal in EGFP-Rubicon-Flag and Nrros-Myc/His (Nrros+Rubicon1-2) co-transfected cells to EGFP-C1 and EGFP-Rubicon-Flag (Rubicon ONLY) co-transfected cells. Each MYC IP sample was normalized to corresponding IgG IP sample. Sample size (n) = 2 biological replicates for EGFP-Rubicon-Flag and Nrros-Myc/His co-transfected cells. I Immunoblot of whole cell lysates used for immunoprecipitation assay in H.

    Journal: bioRxiv

    Article Title: Rubicon modulates neuroimmune responses following traumatic brain injury

    doi: 10.64898/2026.03.04.709622

    Figure Lengend Snippet: A Immunoblot comparing lysates of ipsilateral cortices from wild-type and Rubcn-mutant mice probed with Rubicon A (RbA) antibody. B Western blot showing immunoprecipitation of Rubicon protein from brain lysates of wild-type and Rubcn-mutant mice using Rubicon A (RbA) and Rubicon B (RbA) antibodies. * represents background signal. Blot is probed with RbB antibody. C Rubicon protein (amino-acid) sequence highlighting peptides (p1-p12 in blue) used for peptide mapping of wild-type and mutant RUBCN proteins. Red circle is highlighting Met296 as a potential alternative translation initiation site. D Normalized peptide abundance across the length of RUBCN protein in wild-type and Rubcn-mutant immunoprecipitates using RbA and RbB antibodies. E Comparative enrichment analysis showing fold change of proteins enriched in wild-type over Rubcn-mutant immunoprecipitates using RbA and RbB antibodies. F Immunoprecipitation assay showing lysates of HEK293T cells transfected with indicated plasmids for 24 h and immunoprecipitated with anti-FLAG or anti-HA agarose beads. Left: Immunoblot of immunoprecipitates with the indicated antibodies. Right: Fold change of NRROS signal in EGFP-Rubicon-Flag and Nrros-Myc/His (Nrros+Rubicon1-3) co-transfected cells to EGFP-C1 and Nrros-Myc/His (Nrros ONLY) co-transfected cells. Each FLAG IP sample was normalized to corresponding HA IP sample for quantification. Sample size (n) = 3 biological replicates for EGFP-Rubicon-Flag and Nrros-Myc/His co-transfected cells. G Immunoblot of whole cell lysates used for immunoprecipitation assay in F. H Immunoprecipitation assay showing lysates of HEK293T cells transfected with indicated plasmids for 24 h and immunoprecipitated with anti-MYC or anti-IgG antibodies. Left: Immunoblot of immunoprecipitates with the indicated antibodies. Right: Fold change of RUBCN signal in EGFP-Rubicon-Flag and Nrros-Myc/His (Nrros+Rubicon1-2) co-transfected cells to EGFP-C1 and EGFP-Rubicon-Flag (Rubicon ONLY) co-transfected cells. Each MYC IP sample was normalized to corresponding IgG IP sample. Sample size (n) = 2 biological replicates for EGFP-Rubicon-Flag and Nrros-Myc/His co-transfected cells. I Immunoblot of whole cell lysates used for immunoprecipitation assay in H.

    Article Snippet: The cell lysates were centrifuged at 18,000 xg for 30 min, and the resulting supernatants were pre-cleared with Pierce TM Protein A/G Agarose beads (ThermoFisher Scientific; 20421) and mouse mAb IgG1 (CST; 5415) or mouse IgG2a (CST; 61656) for 2 h at 4 °C with rotation.

    Techniques: Western Blot, Mutagenesis, Immunoprecipitation, Sequencing, Transfection

    (A) lif expression in the scRNA-seq from mouse livers with acetaminophen (APAP)-induced injury at the indicated time points. (B) lif expression in the scRNA-seq across cell types in the livers of mouse with APAP injury at the indicated time points. (C) lif expression in spatial transcriptomics of liver samples from healthy (HEA2) and APAP injury (APAP1_S2) humans. (D&E) Serum mLIF levels at 24, 48, and 72 h after partial hepatectomy (PHx) in mice treated with IgG (D) or anti-LIF neutralizing antibody (E). (F) Resected liver-to-body weight ratio in mice treated with anti-LIF antibody or control IgG. (G) Liver-to-body weight ratio at 24, 48, 72 h and 1-week post-PHx in mice treated with anti-LIF antibody or control IgG. (H) Immunofluorescence staining of liver sections at 48 h post-PHx from mice treated with anti-LIF antibody or control IgG. DAPI (blue), PCNA (red), CK19 (purple). Scale bars: 100 μm. (I) Quantification of PCNA-positive hepatocytes ratio at 48 h post-PHx in mice treated with anti-LIF antibody or control IgG.

    Journal: bioRxiv

    Article Title: The LIF-LIFR Axis Promotes Liver Regeneration via Modulation of Angiogenesis and HGF Release from LSECs

    doi: 10.64898/2026.02.24.707802

    Figure Lengend Snippet: (A) lif expression in the scRNA-seq from mouse livers with acetaminophen (APAP)-induced injury at the indicated time points. (B) lif expression in the scRNA-seq across cell types in the livers of mouse with APAP injury at the indicated time points. (C) lif expression in spatial transcriptomics of liver samples from healthy (HEA2) and APAP injury (APAP1_S2) humans. (D&E) Serum mLIF levels at 24, 48, and 72 h after partial hepatectomy (PHx) in mice treated with IgG (D) or anti-LIF neutralizing antibody (E). (F) Resected liver-to-body weight ratio in mice treated with anti-LIF antibody or control IgG. (G) Liver-to-body weight ratio at 24, 48, 72 h and 1-week post-PHx in mice treated with anti-LIF antibody or control IgG. (H) Immunofluorescence staining of liver sections at 48 h post-PHx from mice treated with anti-LIF antibody or control IgG. DAPI (blue), PCNA (red), CK19 (purple). Scale bars: 100 μm. (I) Quantification of PCNA-positive hepatocytes ratio at 48 h post-PHx in mice treated with anti-LIF antibody or control IgG.

    Article Snippet: The proteins which included hLIF (Abcam, #ab287941), hVEGF (R&D system, #293-VE), hOSM (R&D system, #8475-OM), hCT1 (R&D system, 612-CD-010), IL-6 (PeproTech, 200-06), hHGF(R&D system, 294-HG), mHGF (R&D system, 2207-HG-025), EGF (R&D system, 236-EG), aLIF (UCSD), MAb mouse IgG2a isotype control (BioXcell,C1.18.4, #BE0085), anti-VEGF antibody B20-4.1.1 (Genentech) were added to cells at various concentrations, as indicated in the figures.

    Techniques: Expressing, Spatial Transcriptomics, Control, Immunofluorescence, Staining

    (A) lif expression in the scRNA-seq from mouse livers with acetaminophen (APAP)-induced injury at the indicated time points. (B) lif expression in the scRNA-seq across cell types in the livers of mouse with APAP injury at the indicated time points. (C) lif expression in spatial transcriptomics of liver samples from healthy (HEA2) and APAP injury (APAP1_S2) humans. (D&E) Serum mLIF levels at 24, 48, and 72 h after partial hepatectomy (PHx) in mice treated with IgG (D) or anti-LIF neutralizing antibody (E). (F) Resected liver-to-body weight ratio in mice treated with anti-LIF antibody or control IgG. (G) Liver-to-body weight ratio at 24, 48, 72 h and 1-week post-PHx in mice treated with anti-LIF antibody or control IgG. (H) Immunofluorescence staining of liver sections at 48 h post-PHx from mice treated with anti-LIF antibody or control IgG. DAPI (blue), PCNA (red), CK19 (purple). Scale bars: 100 μm. (I) Quantification of PCNA-positive hepatocytes ratio at 48 h post-PHx in mice treated with anti-LIF antibody or control IgG.

    Journal: bioRxiv

    Article Title: The LIF-LIFR Axis Promotes Liver Regeneration via Modulation of Angiogenesis and HGF Release from LSECs

    doi: 10.64898/2026.02.24.707802

    Figure Lengend Snippet: (A) lif expression in the scRNA-seq from mouse livers with acetaminophen (APAP)-induced injury at the indicated time points. (B) lif expression in the scRNA-seq across cell types in the livers of mouse with APAP injury at the indicated time points. (C) lif expression in spatial transcriptomics of liver samples from healthy (HEA2) and APAP injury (APAP1_S2) humans. (D&E) Serum mLIF levels at 24, 48, and 72 h after partial hepatectomy (PHx) in mice treated with IgG (D) or anti-LIF neutralizing antibody (E). (F) Resected liver-to-body weight ratio in mice treated with anti-LIF antibody or control IgG. (G) Liver-to-body weight ratio at 24, 48, 72 h and 1-week post-PHx in mice treated with anti-LIF antibody or control IgG. (H) Immunofluorescence staining of liver sections at 48 h post-PHx from mice treated with anti-LIF antibody or control IgG. DAPI (blue), PCNA (red), CK19 (purple). Scale bars: 100 μm. (I) Quantification of PCNA-positive hepatocytes ratio at 48 h post-PHx in mice treated with anti-LIF antibody or control IgG.

    Article Snippet: Mouse MAb IgG2a isotype control (BioXcell, C1.18.4, #BE0085) was diluted in PBS at the concentrations of 10 mg/kg. aLIF (purified at UCSD or from Genentech) was diluted in PBS at the concentrations of 20 mg/kg for intraperitoneal injection to 8-week-old male C57BL/6J mice.

    Techniques: Expressing, Spatial Transcriptomics, Control, Immunofluorescence, Staining