Lipidated Cyclic γ-AApeptides Display Both Antimicrobial and Anti-inflammatory Activity

Authors

Yaqiong Li, University of South Florida
Christina Smith, University of Colorado
Haifan Wu, University of South Florida
Shruti Padhee, University of South Florida
Namitha Manoj, University of Colorado
Joseph Cardiello, University of Colorado
Qiao Qiao, University of South Florida
Chuanhai Cao, University of South FloridaFollow
Hang Yin, University of Colorado
Jianfeng Cai, University of South FloridaFollow

Document Type

Article

Publication Date

2014

Digital Object Identifier (DOI)

https://doi.org/10.1021/cb4006613

Abstract

Antimicrobial peptides (AMPs) are host-defense agents capable of both bacterial membrane disruption and immunomodulation. However, the development of natural AMPs as potential therapeutics is hampered by their moderate activity and susceptibility to protease degradation. Herein we report lipidated cyclic γ-AApeptides that have potent antibacterial activity against clinically relevant Gram-positive and Gram-negative bacteria, many of which are resistant to conventional antibiotics. We show that lipidated cyclic γ-AApeptides mimic the bactericidal mechanism of AMPs by disrupting bacterial membranes. Interestingly, they also harness the immune response and inhibit lipopolysaccharide (LPS) activated Toll-like receptor 4 (TLR4) signaling, suggesting that lipidated cyclic γ-AApeptides have dual roles as novel antimicrobial and anti-inflammatory agents.

Was this content written or created while at USF?

Yes

Citation / Publisher Attribution

ACS Chemical Biology, v. 9, issue 1, p. 211-217

Scholar Commons Citation

Li, Yaqiong; Smith, Christina; Wu, Haifan; Padhee, Shruti; Manoj, Namitha; Cardiello, Joseph; Qiao, Qiao; Cao, Chuanhai; Yin, Hang; and Cai, Jianfeng, "Lipidated Cyclic γ-AApeptides Display Both Antimicrobial and Anti-inflammatory Activity" (2014). Chemistry Faculty Publications. 180.
https://digitalcommons.usf.edu/chm_facpub/180