ArticleImmunologic research2025
BECN1 activator peptide Tat-beclin 1 promotes ferroptosis via the BECN1-SLC7A11 axis to inhibit NSCLC progression.
Article in Immunologic research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
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Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it.
- [Research Advances on the Autophagy and Ferroptosis in the Development and Treatment of Lung Cancer].Zhongguo fei ai za zhi = Chinese journal of lung cancer · 2025Pooled it
- Bilirubin and the Yellow Players in Ferroptosis: A Delicate Balance in Human Health and Disease, with a Focus on the Liver, Cardiovascular System, and Brain.Biomolecules · 2026Review
- The AMPK-BECN1-System Xc⁻ Pathway in Traumatic Brain Injury: Implications for Exosome-Based Therapy.Cellular and molecular neurobiology · 2026Review
- Pan-Cancer profiling of ferroptosis-related genes reveals prognostic biomarkers and sex-specific associations.Clinical and translational radiation oncology · 2026Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Non-small-cell lung cancer (NSCLC) is associated with high mortality. Beclin 1 (BECN1), an autophagy regulator, and ferroptosis, a lipid peroxidation-driven cell death, are both linked to cancer suppression. This study examines whether the BECN1 activator peptide, Tat-Beclin 1, induces ferroptosis in NSCLC by targeting solute carrier family 7 member 11 (SLC7A11). BECN1 expression in NSCLC tissues and cells was assessed using RT-qPCR, western blot, and immunohistochemistry. Functional assays included CCK-8 for cell viability, C11-BODIPY for lipid peroxidation, glutathione (GSH) and glutamate release, glutathione peroxidase 4 (GPX4) activity, and western blotting for iron metabolism markers (ferritin heavy chain 1 [FTH1], ferritin light chain [FTL], and transferrin receptor [TFRC]). BECN1-SLC7A11 interactions were examined using co-immunoprecipitation and immunofluorescence. BECN1 was knocked down using small hairpin RNA (shRNA), and its effects on ferroptosis were evaluated. System Xc⁻ activity was assessed in control, Tat-beclin 1, Tat-beclin 1 + shRNA-NC, and Tat-Beclin 1 + shRNA-BECN1 groups. Tumor suppression by Tat-beclin 1, erastin, and their combination was assessed in vivo using xenograft models. BECN1 expression was downregulated in NSCLC tissues and cells. Treating NSCLC cells with Tat-beclin 1 upregulated BECN1 expression and promoted ferroptosis, as evidenced by increased lipid peroxidation and malondialdehyde content, reduced GSH and GPX4 activity, and decreased cell viability, without affecting Fe
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