MV140 mucosal bacterial vaccine improves uropathogenic E. coli clearance in an experimental model of urinary tract infection

Abstract

MV140 is a mucosal vaccine of inactivated whole bacteria (E. coli, K. pneumoniae, E. faecalis, P. vulgaris) with clinical efficacy against recurrent urinary tract infections (UTIs). Here, MV140 was evaluated in a murine model of acute uropathogenic E. coli (UPEC)-induced UTI using the UTI89 strain. MV140 vaccination resulted in UPEC clearance, concomitant with increased influx of myeloid cells in urine, CD4+ T cells in the bladder, and a systemic adaptive immune response to both MV140-containing E. coli and UTI89.