Journal: Redox Biology

Article Title: Targeting HIF-1α promotes ferroptosis and boosts antitumor immunity in MSS colorectal cancer

doi: 10.1016/j.redox.2026.104151

Figure Lengend Snippet: HIF-1α nuclear distribution increased in RSL3-resistant CT26 cells and significantly promoted tumourigenicity and metastasis. (A) The diagram demonstrated the procedure for sphere formation. (B and C) The representative images of sphere formation in MSS CRC cells and quantification analysis of sphere number derived from SW480, HT-29, and WiDr. (D) HIF-1α expression in WiDr was detected by western blotting. (E) qPCR analyzed the indicated gene expression involved in glycolysis in WiDr spheres. (F) Cell viability of parental CT26 and RSL3-resistant CT26 (Re-CT26). (G) Cytoplasm and nuclear HIF-1α expression in CT26. α-tubulin was used as an internal reference for the cytoplasm, and Histone 3 was used as a nuclear reference. (H) qPCR analyzed the indicated gene expression involved in glycolysis in CT26. (I) Image of subcutaneous tumors derived from parental CT26 and Re-CT26. (J) Tumor volume determined by formula: 0.52 × Long × width 2 . (K)Tumor weight of subcutaneous tumors. (L) Bioluminescent images in liver metastatic models. (M) Images of liver metastasis derived from parental CT26 and Re-CT26. (N) Number of liver nodules in liver metastasis models. (O) Representative hematoxylin and eosin (H&E) and immunohistochemical staining images from liver metastasis models. Scale bar: 25 μm. (P) Quantification of immunohistochemical staining results shown in (O). Data are shown as means ± SD. ∗ P < 0.05; ∗∗ P < 0.01; ∗∗∗ P < 0.001; ns: not significant. Two-way ANOVA in (J), others unpaired two-tailed Student's t -test.

Article Snippet: The human MSS CRC cell lines SW480, HT-29, and WiDr, human HEK293T, and mouse MSS CRC cell line CT26 were obtained from American Type Culture Collection (ATCC).

Techniques: Derivative Assay, Expressing, Western Blot, Gene Expression, Immunohistochemical staining, Staining, Two Tailed Test

Journal: Redox Biology

Article Title: Targeting HIF-1α promotes ferroptosis and boosts antitumor immunity in MSS colorectal cancer

doi: 10.1016/j.redox.2026.104151

Figure Lengend Snippet: HIF-1α inhibition enhanced ferroptosis inducer sensitivity in MSS CRC cells. (A and B) Cell viability of HT-29 or SW480 treated with RSL3, BAY 87-2243 alone or in combination treatment. (C and D) DCFH-DA oxidation in HT-29 or SW480 treated with RSL3, BAY 87-2243 alone or in combination treatment were quantified using flow cytometry with DCFH-DA probe. (E and F) Lipid peroxidation levels of HT-29 or SW480 treated with RSL3, BAY 87-2243 alone or in combination treatment were detected using flow cytometry with C11-BODIPY 581/591 (FITC channel; excitation/emission: 488/510 nm). (G) MDA levels in cells subjected to the indicated treatment. (H) GSH levels in cells subjected to the indicated treatment. Results are shown as means ± SD. ∗ P < 0.05 ; ∗∗ P < 0.01 ; ∗∗∗ P < 0.001 ; ∗∗∗∗ P < 0.0001 . P values were calculated by one-way ANOVA.

Article Snippet: The human MSS CRC cell lines SW480, HT-29, and WiDr, human HEK293T, and mouse MSS CRC cell line CT26 were obtained from American Type Culture Collection (ATCC).

Techniques: Inhibition, Flow Cytometry