Journal: Redox Biology

Article Title: Amino acid restriction sensitizes lung cancer cells to ferroptosis via GCN2-dependent activation of the integrated stress response

doi: 10.1016/j.redox.2025.103988

Figure Lengend Snippet: F12 medium sensitizes lung cancer cells to iron-dependent lipid peroxidation . ( A, B ) Quantification by flow cytometry of oxidized BODIPY-C11 fluorescence in A549 (A) or H838 (B) cells that were cultured in RPMI or F12 medium and treated with 100 μM BSO or vehicle for 24 h. ( C ) Dose response curves for F12-cultured A549 and H838 cells treated with BSO in combination with 5 μM liproxstatin-1 (LIP-1), 5 μM ferrostatin-1 (FER-1) or 50 μM α-tocopherol (α-toco) for 72 h. ( D ) Dose response curves for F12-cultured A549 or H838 cells treated with BSO in combination with 5 μM deferoxamine (DFO) for A549 cells and 9 μM for H838 cells for 72 h. ( E ) Dose response curves for F12-cultured A549 or H838 cells treated with BSO in combination with 5 μM necrostatin-1 (NEC-1) or 10 μM ZVAD-FMK (ZVAD) for 72 h. ( F ) Dose response curves for F12-cultured A549 or H838 cells treated with BSO in combination with 4 μg/mL certolizumab (CER), 15 μM CU-CPT4a (C4a), 3 μM resatorvid (RST), or 50 μM necrostatin-1 (NEC-1) for 72 h (ND, not done). Dose response curves were normalized against the mean of the untreated samples for each condition. n = 3 replicates for all datapoints, error bars show SEM. ∗∗∗∗P < 0.0001.

Article Snippet: Drugs used were auranofin (A6733; Sigma-Aldrich), α-tocopherol (T3251; Sigma-Aldrich), bafilomycin A1 (SML1661; Sigma-Aldrich), certolizumab pegol (HYP9953; MedChemExpress), chloroquine (C6628; Sigma-Aldrich), CU-CPT4A (HY-108473; MedChemExpress), deferoxamine (D9533; Sigma-Aldrich), erastin (e7781; Sigma Aldrich), FCCP (Carbonyl cyanide 4-(trifluoromethoxy)phenylhydrazone) (HY-100410; MedChemExpress), ferrostatin-1 (SML0583; Sigma-Aldrich), l -buthionine-sulfoximine (b2515; Sigma-Aldrich), mito-TEMPO (HY–W001187; MedChemExpress), necrostatin-1 (N9037; Sigma-Aldrich), liproxstatin-1 (SML1414; Sigma-Aldrich), oligomycin (HY–N6782; MedChemExpress), puromycin dihydrochloride (A1113803; Gibco), rotenone (HY–B1756; MedChemExpress), RSL3 (SML2234; Sigma-Aldrich), resatorvid (HY-11109; MedChemExpress), and Z-VAD-FMK (V116; Sigma-Aldrich).

Techniques: Flow Cytometry, Fluorescence, Cell Culture

Journal: Nature Communications

Article Title: Multi-omics analysis identifies a microbiota–bile acid–TLR signaling axis driving bladder injury in interstitial cystitis

doi: 10.1038/s41467-025-68060-1

Figure Lengend Snippet: A Differentially expressed genes (DEGs) in full-thickness bladder tissues from HIC patients and controls identified via RNA sequencing (|log₂FC|≥2; adjusted p < 0.05, two-sided Wald test using DESeq2). Gene Ontology (GO) ( B ) and KEGG ( C ) enrichment analyses of DEGs (two-sided hypergeometric test with FDR correction). D UMAP visualization of single-cell transcriptomic landscape of urothelium, with urothelial cells (UCs) identified by KRT19 and UPK1A expression. GO ( E ) and KEGG ( F ) analyses of upregulated DEGs in UCs (two-sided hypergeometric test with FDR correction). GO ( G ) and KEGG ( H ) analyses of downregulated DEGs in UCs (two-sided hypergeometric test with FDR correction). I , J Gene Set Enrichment Analysis (GSEA) of altered pathways in UCs (two-sided permutation test with 1000 permutations, with multiple testing corrected using the FDR). The exact p value for TLR signaling of UCs in panel I is 0.0009. K Expression of Toll-like receptor (TLR) subtypes in UCs from HIC bladders. mRNA ( L ) and protein ( M ) expression levels of TLR3 in isolated urothelium from control and HIC patients ( n = 7 control vs. 10 HIC; data show median (IQR); two-sided Mann–Whitney U test; ns not significant; Bar for panel M: 1 cm). N Immunostaining showing the distribution of TLR3 protein in the urothelium of patients with HIC ( n = 7 control vs. 10 HIC; one section and field per patient; Bar: 100 μm). IHC immunohistochemistry, HL Hunner lesions, U urothelium, LP lamina propria (blue line), M muscularis. Source data are provided as a Source Data file.

Article Snippet: TLR3 inhibitor group: Same intravesical TCDCA instillation as above, followed by intraperitoneal injection of a TLR3 inhibitor (CU-CPT 4a, MCE, Cat. HY-108473) at 1 mg/kg , twice per week for 2 weeks.

Techniques: RNA Sequencing, Expressing, Isolation, Control, MANN-WHITNEY, Immunostaining, Immunohistochemistry

Journal: Nature Communications

Article Title: Multi-omics analysis identifies a microbiota–bile acid–TLR signaling axis driving bladder injury in interstitial cystitis

doi: 10.1038/s41467-025-68060-1

Figure Lengend Snippet: A Experimental workflow of E. avium colonization in antibiotic-pretreated mice (Abx-mice, n = 6 per group). Created in BioRender. Chen, J. (2025) https://BioRender.com/3lccwo1 . B Increased abundance of E. avium confirmed by metagenomic sequencing ( n = 6 per group). C Evaluation of voiding behavior following E. avium transplantation ( n = 6 per group; one measurement per mouse). D Measurement of mechanical pain threshold post-transplantation ( n = 6 per group). E Representative histological analysis of bladder tissues after E. avium transplantation ( n = 6 per group; one section and field per mouse). F , G Quantification of blood and urinary bile acids using comprehensive targeted bile acid profiling ( n = 6 per group). H Cell viability of human urothelial cells (HUCs) following TCDCA or TUDCA treatment ( n = 3 independent experiments). I Expression of ZO-1, TNF-α, and TLR3 following TCDCA (200 µM) exposure ( n = 3 independent experiments). J Experimental workflow of intravesical instillation of TCDCA in rats ( n = 5 per group). Created in BioRender. Chen, J. (2025) https://BioRender.com/3lccwo1 . K Evaluation of voiding function after TCDCA instillation ( n = 5 per group; each rate measured once). L Assessment of mechanical pain threshold following TCDCA exposure ( n = 5 per group). M Representative histology of bladder tissues post-instillation ( n = 5 per group; one section per rat, one field quantified per section). For panels ( B – H , K , L ): data are presented as median (IQR). Statistical analysis was performed using the two-sided Mann–Whitney U test. IHC immunohistochemistry, Red arrow: urothelial thinning, detachment, and exposure, Blue line: LP lamina propria, U urothelium, M muscularis. Source data are provided as a Source Data file.

Article Snippet: TLR3 inhibitor group: Same intravesical TCDCA instillation as above, followed by intraperitoneal injection of a TLR3 inhibitor (CU-CPT 4a, MCE, Cat. HY-108473) at 1 mg/kg , twice per week for 2 weeks.

Techniques: Sequencing, Transplantation Assay, Expressing, MANN-WHITNEY, Immunohistochemistry

Journal: Nature Communications

Article Title: Multi-omics analysis identifies a microbiota–bile acid–TLR signaling axis driving bladder injury in interstitial cystitis

doi: 10.1038/s41467-025-68060-1

Figure Lengend Snippet: A , B Expression of tight junction protein ZO-1 and inflammatory marker TNF-α after TLR3 intervention in TCDCA-pretreated human urothelial cells (HUCs) ( n = 3 independent experiments). C Transepithelial resistance (TER) changes following TLR3 intervention in TCDCA-pretreated HUCs ( n = 3 independent experiments). D , E Expression of ZO-1 and TNF-α after pentosan polysulfate sodium (PPS) administration in TCDCA-pretreated HUCs ( n = 3 independent experiments). F TER changes following PPS intervention in TCDCA-pretreated HUCs ( n = 3 independent experiments). G Experimental workflow showing TLR3 inhibitor and PPS administration to rats following intravesical TCDCA instillation ( n = 5 per group). Created in BioRender. Chen, J. (2025) https://BioRender.com/3lccwo1 . H Assessment of voiding function (one measurement per rat) and pain threshold after TLR3 inhibition ( n = 5 per group). I Representative histological images of bladder tissues post-TLR3 inhibition ( n = 5 per group; one section and field per rat). For panels ( B , C , E , F , H ): data are presented as median (IQR). Statistical analysis was performed using the Kruskal–Wallis test. ns not significant, IHC immunohistochemistry, Red arrow: urothelial thinning, detachment, and exposure, Blue line: LP lamina propria, U urothelium, M muscularis. Source data are provided as a Source Data file.

Article Snippet: TLR3 inhibitor group: Same intravesical TCDCA instillation as above, followed by intraperitoneal injection of a TLR3 inhibitor (CU-CPT 4a, MCE, Cat. HY-108473) at 1 mg/kg , twice per week for 2 weeks.

Techniques: Expressing, Marker, Inhibition, Immunohistochemistry