PNAS has a novel approach to #RA Tx; bioengineered probiotic(Lactobacillus reuteri) orally delivers a peptide Kv1.3 channel blocker to RxRA. Kv1.3 is expressed on CCR7− effector memory T cells. Blocking Kv1.3 improves RA & PSO in rat models. https://t.co/DyyXi2GUH2 https://t.co/8nDyFv9DWx