ArticleNPJ biofilms and microbiomes2026
Atractylodes macrocephala polysaccharide orchestrates anti-tumor immunity via a dual-network mechanism targeting the gut microbiota and spleen.
Article in NPJ biofilms and microbiomes, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Colorectal cancer (CRC) is a common global malignancy, and its advanced stage is closely linked to a gut microbiota-metabolism-immunity vicious cycle requiring early intervention. In this study, anti-CRC effects of PAMK in CT26 tumor-bearing mice were explored. Results showed that PAMK significantly inhibited tumor growth and improved the quality of life of tumor-bearing mice by enhancing antitumor immunity, including increased NK cell infiltration and NKG2D expression, elevated CD4⁺:CD8⁺ ratios, and higher serum IFN-γ levels. However, therapeutic effects of PAMK were not observed in antibiotic‑induced microbiota depletion (AIMD) mice. Notably, following fecal microbiota transplantation (FMT), therapeutic effects of PAMK were largely restored. PAMK alleviated tumor-induced gut microbiota dysbiosis characterized by enriched g_Alistipes, and remodeled fatty acid and steroid metabolism, which was closely associated with enhanced antitumor immunity and a potential microbiota-metabolism-immunity axis. Meanwhile, PAMK modulated multiple metabolic, circadian and immune pathways in the spleen as verified by transcriptomics and qPCR. Integrative multi-omics analysis indicated that the gut microbiota-metabolite-spleen gene axis may act synergistically to mediate anti-CRC effects of PAMK in tumor-bearing mice. This study highlights the potential of PAMK in CRC tumor immune adjuvants, providing experimental and theoretical support for its clinical translation and novel tumor immunotherapies.
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