Lactoferrin 17-41 (Lactoferricin B) acetate, a peptide corresponding to residues 17-41 of bovine lactoferrin, has antimicrobial activity against a wide range of microorganisms, including Gram-positive and Gramnegative bacteria, viruses, protozoa, and fungi. Lactoferrin 17-41 acetate has antitumor activities[1][2].

Lactoferrin 17-41 (Lactoferricin B) acetate has an MIC of 30 μg/ml against E. coli ATCC 25922[1].Lactoferrin 17-41 acetate significantly stimulates apoptosis of HT-29 cells and displays cytotoxic activity on HT-29 cells[2].Lactoferrin 17-41 acetate variously regulats transcription of genes involved in the p53 signaling pathway, such as PMAIP-1, TP5313, and SFN[2].Lactoferrin 17-41 acetate can bind LPS from Gram-negative bacteria and that it can inhibit LPS induced cytokine response in human monocytic cells[1][3]. Cell Viability Assay[1] Cell Line: HT-29 cells

[1]. Samuelsen ?, et al. Anti-complement effects of lactoferrin-derived peptides. FEMS Immunol Med Microbiol. 2004 Jun 1;41(2):141-8. [2]. Jiang R, et al. Bovine lactoferrin and lactoferricin exert antitumor activities on human colorectal cancer cells(HT-29) by activating various signaling pathways. Biochem Cell Biol. 2017 Feb;95(1):99-109. [3]. Latorre D, et al. Reciprocal interactions between lactoferrin and bacterial endotoxins and their role in the regulation of the immune response. Toxins (Basel). 2010;2(1):54‐68.