Journal: EMBO Molecular Medicine
Article Title: Glycine decarboxylase advances IgA nephropathy by boosting mesangial cell proliferation through the pyrimidine pathway
doi: 10.1038/s44321-025-00315-2
Figure Lengend Snippet: ( A , B ) The metabolites of glycine, serine and threonine metabolism, pyrimidine metabolism in the pIgA + si-NC and pIgA + si-GLDC groups were analyzed. ( A ) Unpaired t test, N = 3, No. 1: pIgA+si-GLDC/Control vs . pIgA+si-NC/Control, ## P = 0.0078. No. 3: pIgA+si-GLDC/Control vs . pIgA+si-NC/Control, ## P = 0.0013. No. 4: pIgA+si-GLDC/Control vs . pIgA/Control, * P = 0.0482. Error bar: mean ± SEM. ( B ) Unpaired t test, N = 3, No. 1: pIgA+si-GLDC/Control vs . pIgA+si-NC/Control, ## P = 0.0075. No. 2: pIgA+si-GLDC/Control vs . pIgA+si-NC/Control, ## P = 0.0006. No. 5: pIgA+si-GLDC/Control vs . pIgA/Control, ** P = 0.0002; pIgA+si-GLDC/Control vs. pIgA+si-NC/Control, ## P = 0.0100. Error bar: mean ± SEM. ( C , D ) Glycine, thymidine, thymine, uracil levels in the WT, G776R, K759A groups were detected by ELISA. ( C ) Unpaired t test, N = 3, G776R/NC vs . WT/NC, ** P = 0.0006; K759A/NC vs . WT/NC, ** P = 0.0017. Error bar: mean ± SEM. ( D ) Unpaired t test, N = 3, Thymidine: G776R/NC vs . WT/NC, ** P = 0.0005; K759A/NC vs . WT/NC, ** P = 0.0006. Thymine: G776R/NC vs . WT/NC, * P = 0.0200; K759A/NC vs . WT/NC, * P = 0.0141. Uracil: G776R/NC vs . WT/NC, * P = 0.0162; K759A/NC vs . WT/NC, ** P = 0.0067. Error bar: mean ± SEM. ( E , F ) SV40-MES13 cells treated with methotrexate (0.5, 1.0, 2.0 μM) were grouped into control and pIgA groups, NC and GLDC groups. Cell proliferation assay was performed. ( E ) One-way ANOVA with Tukey’s post-hoc test, N = 3, pIgA: Methotrexate 2 μM vs . Methotrexate 0 μM, ** P < 0.0001. ( F ) One-way ANOVA with Tukey’s post-hoc test, N = 3. GLDC: Methotrexate 2 μM vs . Methotrexate 0 μM, ** P < 0.0001. Error bar: mean ± SD. ( G , H ) Thymidine, thymine, uracil levels in the pIgA, pIgA + Methotrexate, GLDC, GLDC + Methotrexate groups were detected by ELISA. ( G ) Unpaired T test, N = 3, Thymine, * P = 0.0228. ( H ) Unpaired t test, N = 3, Thymine, * P = 0.0254; Thymidine, * P = 0.0303. Error bar: mean ± SEM. ( I , J ) SV40-MES13 cells were grouped into NC, GLDC, GLDC + si-CAD, GLDC + si-DHODH, pIgA + si-NC, pIgA + si-GLDC, pIgA + si-GLDC + si-CAD, pIgA + si-GLDC + si-DHODH. Cell viability assay was performed. ( I ) One-way ANOVA with Tukey’s post-hoc test, N = 3, NC vs . GLDC, ** P = 0.0059; GLDC+si-NC vs . GLDC+si-CAD, ** P = 0.0018; GLDC+si-NC vs . GLDC+si-DHODH, ** P = 0.0022. ( J ) One-way ANOVA with Tukey’s post-hoc test, N = 3, pIgA+si-NC vs . pIgA+si-GLDC, ** P = 0.0014. Error bar: mean ± SD. ( K ) The mechanism diagram of GLDC promoting pyrimidine metabolism leading to increased proliferation of glomerular mesangial cells under pIgA treatment. .
Article Snippet: Primary human glomerular mesangial cell ( H. sapiens ) , Procell Life Science & Technology , CP-H067.
Techniques: Control, Enzyme-linked Immunosorbent Assay, Proliferation Assay, Viability Assay