TITLE:
Degradation of naturally occurring and engineered antimicrobial peptides by proteases
AUTHORS:
Bernard J. Moncla, Kara Pryke, Lisa Cencia Rohan, Phillip W. Graebing
KEYWORDS:
Microbicides; HIV; Anti-HIV; Antimicrobial Peptides; Proteases
JOURNAL NAME:
Advances in Bioscience and Biotechnology,
Vol.2 No.6,
December
5,
2011
ABSTRACT: We hypothesized that current antimicrobial peptides should be susceptible to proteolytic digestion. The antimicrobial peptides: Griffithinsin, RC-101, LL-37, LSA-5, PSC-RANTES and DJ007 were degraded by commercially available proteases. Two different species of anaerobic vaginal flora, Prevotella bivia and Porphyromonas asaccharolytica also degraded the materials. Griffithsin was resistant to digestion by 8 of the 9 proteases and the bacteria while LL-37 was the most sensitive to protease digestion. These data suggests most of the molecules may not survive for very long in the proteolytic rich environments in which they are intended to function.