Adenoidal Treg exhibit strong inhibition of CD4+ T cell responses to WCA.

Abstract

<p>CD4+ T cell proliferation (A+B) and cytokine production (C) in the presence or absence of Treg after stimulation with pneumococcal WCA. A). % CD4+ T cell proliferation in adenoidal MNC and Treg-depleted MNC from pneumococcal culture+ (n = 6) and culture− children (n = 6) (*p<0.01 compared to culture− group). B). CD4+ T cell proliferation induced by WCA in Treg-depleted MNC suppressed by the repletion of purified Treg (*p<0.01 compared to Treg-depleted MNC+WCA, n = 4. C). *p<0.01, #p<0.01 compared to Treg-depleted MNC+WCA.</p