ArticleTranslational oncology2025
Methionine restriction promotes the polarization of macrophages towards M1 and the immunotherapy effect of PD-L1/PD-1 blockades by inhibiting the secretion of MIF by gastric carcinoma cells.
Article in Translational oncology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Role of methionine metabolism in cancer: recent advances in molecular mechanisms and therapeutic implications.Experimental hematology & oncology · 2026Review
- Camptothecin Nanowires Induce the cGAS-STING Pathway to Remold Tumor-Associated Macrophages for Antitumor Immunity.Pharmaceutics · 2026Article
- Molecular innate immune programs of tumor-associated macrophages in immune checkpoint blockade resistance: a staged framework from suppressive circuitry to translational bottlenecks.Frontiers in immunology · 2026Review
- Identification of a lactylation-related gene signature in microsatellite stable gastric cancer based on bulk and single-cell RNA-seq.Frontiers in immunology · 2026Article
- One-carbon metabolism in cancer immunity: T-cell fitness, epigenetic programming, and therapeutic opportunities.Frontiers in immunology · 2026Review
- Tumor-associated macrophages in gastric cancer peritoneal metastasis: orchestrating immune evasion, niche remodeling, and therapeutic resistance.Frontiers in immunology · 2026Review
- Hepatocyte-Specific ApoJ Knockout Improves Metabolic Profiles in the Liver of Diabetic Mice.Metabolites · 2025Article
- Targeting tumor-associated macrophages in gastric cancer progression and therapy: insights from molecular mechanisms to therapeutic applications.Frontiers in pharmacology · 2025Review
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe limited curative effect of PD-L1/PD-1 blockades presents challenges to immunotherapy for advanced gastric cancer. We have found that methionine restriction (MR) enhances the drug resistance of gastric carcinoma cells. We aimed to explore whether MR can enhance the efficacy of PD-L1/PD-1 blockades in gastric cancer.
methodsTo conduct MR, gastric carcinoma cells were transfected with LV-METase in vitro, and 615 mice were injected with MFC cells with stable METase expression in vivo. Flow cytometry was conducted to measure the proportions of M1/M2 macrophages and CD8
resultsMR increased M1 and down-regulated M2 macrophages. MR suppressed MIF levels in gastric carcinoma cells, while the addition of anti-MIF neutralizing antibody inhibited the effect of MR on macrophage M1/M2 polarization. MR enhanced the increase of the proportion of CD8
conclusionsMR inhibits the secretion of MIF by gastric carcinoma cells, promotes macrophage M1 polarization, and enhances the therapeutic effect of PD-L1/PD-1 blockades in gastric cancer.
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