Journal: Cell Reports Medicine
Article Title: 5-HT reuptake blockade induces pyroptosis in BRAF V600E -mutated melanomas via remodeling histone serotonylation
doi: 10.1016/j.xcrm.2025.102537
Figure Lengend Snippet: PH induces pyroptosis to potentiate PD-1 blockade (A) Representative immunofluorescence images of CD8 and GZMB staining in YUMM1.7 P - and YUMM1.7 DTR -derived tumors; right: quantification of indicated staining-positive cells. Scale bars, 10 μm. (B–D) YUMM1.7 DTR cells stably expressing the indicated shRNAs were subcutaneously injected into immunocompetent C57BL/6J mice. When tumor sizes reached 50 mm 3 (day 5, labeled as day 0 in C), mice were administrated with the indicated drugs (B). Tumor size in each group was recorded every 3 days (C). At the endpoint, the tumors were excised and weighed (D). PH, 25 mg/kg, intraperitoneal (i.p.) injection, daily. IgG2a or anti-PD-1 was diluted in saline and then given i.p. every 3 days. n = 7 tumors per group. (E) CD8 and GZMB staining in YUMM1.7 DTR allografts with the indicated treatment (left). Right: quantification of the indicated staining-positive cells. Scale bars, 10 μm. (F) Frequencies of intratumoral CD3ε + (left), CD4 + (middle), and CD8 + (right) cells among CD45 + cells. n = 7 tumors per group. (G) Frequencies of intratumoral GZMB + (left), PRF1 + (middle), and IFN-γ + (right) cells among CD8 + T cells. n = 7 tumors per group. Data are displayed as mean ± SEM. Statistical significance was determined by Student’s t test. ∗∗∗ p < 0.001, ∗∗ p < 0.01, ∗ p < 0.05, n.s., not significant. See also , , and .
Article Snippet: In vivo monoclonal anti-mouse PD-1 (CD279) (clone RMP1-14) , BioXcell , Cat# BE0146; RRID: AB_10949053.
Techniques: Immunofluorescence, Staining, Derivative Assay, Stable Transfection, Expressing, Injection, Labeling, Saline