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A research team from POSTECH and ImmunoBiome in Korea, led by Professor Sin-Hyeog Im, has uncovered a new mechanism showing how butyrate—a short-chain fatty acid produced by gut commensal bacteria—enhances T follicular helper (Tfh) cell activity to promote antibody production and strengthen mucosal vaccine efficacy. This study identifies a new microbiota–immune–antibody production axis linking microbial metabolism to mucosal immune responses, providing a strategy to maximize the protective effects of mucosal vaccines. The findings are published in the journal Microbiome.

Source: https://medicalxpress.com/news/2026-02- ... mmune.html