A Diet-Sensitive Commensal Lactobacillus Strain Mediates TLR7-Dependent Systemic Autoimmunity

？ L. reuteri colonizes lupus-prone hosts and translocates to MLN, liver, and spleen ？ L. reuteri exacerbates TLR7-dependent lupus in conventional and germ-free mice ？ Resistant starch ameliorates pDCs, type I IFN pathways, and lupus-related mortality ？ Starch diet-derived short-chain fatty acids suppress L. reuteri in vitro and in viv