Manumycin A is a polyketide antibiotic and an inhibitor of thioredoxin reductase 1 (TrxR-1). Manumycin A can inhibit the growth of breast cancer cells and exert its anti-tumor activity through LC3. Manumycin A can downregulate the release of pro-inflammatory cytokines in human monocytes stimulated by TNF alpha, and has potential anti-inflammatory activity. Manumycin A can inhibit the Ras/Raf/ERK1/2 signaling and hnRNP H1 in castration resistant prostate cancer cells to suppress exosome biogenesis and secretion[1][3][4].