N-terminal Myristoylation Enhanced the Antimicrobial Activity of Antimicrobial Peptide PMAP-36PW.
Yongqing Liu, Shengnan Li, Tengfei Shen, Liangliang Chen, Jiangfei Zhou, Shuaibing Shi, Yang Wang, Zhanqin Zhao, Chengshui Liao, Chen Wang
Author Information
Yongqing Liu: The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China.
Shengnan Li: Department of Animal Science, University of Manitoba, Winnipeg, MB, Canada.
Tengfei Shen: The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China.
Liangliang Chen: The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China.
Jiangfei Zhou: The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China.
Shuaibing Shi: The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China.
Yang Wang: Henan Provincial Open Laboratory of Key Disciplines in Environment and Animal Products Safety, Henan University of Science and Technology, Luoyang, China.
Zhanqin Zhao: The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China.
Chengshui Liao: Henan Provincial Open Laboratory of Key Disciplines in Environment and Animal Products Safety, Henan University of Science and Technology, Luoyang, China.
Chen Wang: The Key Lab of Veterinary Biological Products, Henan University of Science and Technology, Luoyang, China.
Drug-resistant bacteria infections and drug residues have been increasing and causing antibiotic resistance and public health threats worldwide. Antimicrobial peptides (AMPs) are novel antimicrobial drugs with the potential to solve these problems. Here, a peptide based on our previously studied peptide PMAP-36PW was designed via N-terminal myristoylation and referred to as Myr-36PW. The fatty acid modification provided the as-prepared peptide with good stability and higher antimicrobial activity compared with PMAP-36PW . Moreover, Myr-36PW exhibited effective anti-biofilm activity against Gram-negative bacteria and may kill bacteria by improving the permeability of their membranes. In addition, the designed peptide Myr-36PW could inhibit the bacterial growth of ATCC 25923 and GIM 1.551 to target organs, decrease the inflammatory damage, show an impressive therapeutic effect on mouse pneumonia and peritonitis experiments, and promote abscess reduction and wound healing in infected mice. These results reveal that Myr-36PW is a promising antimicrobial agent against bacterial infections.
