Journal: Bioactive Materials
Article Title: pH-neutralization strategy to suppress GPCR68 spatiotemporally activates T cells and enhances anti-tumor immunity
doi: 10.1016/j.bioactmat.2026.02.039
Figure Lengend Snippet: BOLT treatment induces ferroptosis in tumor cells. (A) RNA was extracted from Control and BOLT-treated tumors, and RNA sequencing (RNAseq) was performed to identify differentially expressed genes. (B) KEGG pathway analysis was conducted to assess the biological functions of the differentially expressed genes. (C) Heatmap displaying the differential expression of ferroptosis-related genes in BOLT-treated versus Control cells. (D) qRT-PCR analysis showing dose-dependent downregulation of Nrf2 in BOLT-treated cells. (E) qRT-PCR analysis of Duox1 expression in B16 cells following BOLT treatment. (F) Transmission electron microscopy (TEM) images showing mitochondrial shrinkage, increased membrane density, and loss of cristae in BOLT-treated cells. (G) Heatmap showing the dysregulated genes involved in ROS-chemical carcinogenesis in B16 cells treated with BOLT. (H) Flow cytometry analysis revealing reactive oxygen species (ROS) production in B16 cells treated with BOLT (0.25 μg/mL) compared to Control. (I) Histogram overlays and bar graph confirm elevated bodipy levels in BOLT-treated cells versus Control. (J) Annexin V/PI staining shows no significant apoptosis in B16 cells following BOLT treatment. (K) Western blot analysis showing the expression of genes involved in downregulating ferroptosis (SLC7A11, FACL4, and GPX4) in BOLT-treated B16 cells. Student t-test was performed for comparison between 2 groups. Two-way ANOVA was used for multiple comparisons. In-vitro experiments were performed in triplicate. Data are mean ± SEM, ∗ p < 0.05, ∗∗ p < 0.01, ∗∗∗ p < 0.001, and ∗∗∗∗ p < 0.0001.
Article Snippet: Murine tumor cell lines B16 melanoma (RRID: CVCL_0159), MC38 colon cancer (RRID: CVCL_B288), and 4T1 (RRID: CRL_2539) were purchased from the ATCC and cultured in RPMI 1640 medium (Gibco) or DMEM medium (Gibco) with 10% FBS as well as 1% penicillin/streptomycin.
Techniques: Control, RNA Sequencing, RNA sequencing, Quantitative Proteomics, Quantitative RT-PCR, Expressing, Transmission Assay, Electron Microscopy, Membrane, Flow Cytometry, Staining, Western Blot, Comparison, In Vitro