NFKB1 and diabetic kidney disease: Regarding the autocrine communication, Bai and colleagues illustrated that exosomes isolated from HG-treated MCs or serum of patients with DKD have significantly increased circ_DLGAP4 that promote proliferation and fibrosis of renal MCs by sponge miR-143 and modulating ERBB3/NF-κB/MMP-2 axis leading to DN progression.