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Antibiotics (Basel). 2015 Mar;4(1):18-41. doi: 10.3390/antibiotics4010018.

Mechanisms of Antimicrobial Peptide Resistance in Gram-Negative Bacteria.

Author information

1
Department of Microbiology and Immunology, Emory University, Atlanta, GA 30329, USA ; Yerkes Primate Research Center, Emory University, Atlanta, GA 30329, USA ; Emory Vaccine Center, Emory University, Atlanta, GA 30329, USA.
2
Yerkes Primate Research Center, Emory University, Atlanta, GA 30329, USA ; Emory Vaccine Center, Emory University, Atlanta, GA 30329, USA ; Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30329, USA.

Abstract

Cationic antimicrobial peptides (CAMPs) are important innate immune defenses that inhibit colonization by pathogens and contribute to clearance of infections. Gram-negative bacterial pathogens are a major target, yet many of them have evolved mechanisms to resist these antimicrobials. These resistance mechanisms can be critical contributors to bacterial virulence and are often crucial for survival within the host. Here, we summarize methods used by Gram-negative bacteria to resist CAMPs. Understanding these mechanisms may lead to new therapeutic strategies against pathogens with extensive CAMP resistance.

KEYWORDS:

AMP; CAMP; Gram-negative; antibiotic resistance; antimicrobial peptide

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