Antimicrobial peptide expression

The term "antimicrobial peptide expression" refers to the biological process by which cells produce antimicrobial peptides—small proteins that play a critical role in innate immunity across all classes of life. These peptides are potent broad-spectrum agents active against bacteria (both Gram-positive and Gram-negative), viruses enveloped by lipid membranes, fungi, parasites and even some cancer cells[1][2][3]. Antimicrobial peptides are typically 10–50 amino acids long and can be classified based on their structure into α-helical peptides like LL-37 and cecropins; β-sheet structures stabilized by disulfide bonds such as defensins and gomesin; linear extension structures like indolicidin; or cyclic forms[2]. Their main biological function is immune defense through direct killing of pathogens via membrane disruption or intracellular targeting mechanisms such as inhibition of protein synthesis or DNA/RNA binding[1][7]. They also have immunomodulatory roles. While antimicrobial peptides themselves are considered therapeutic targets due to their broad-spectrum activity against resistant pathogens and potential use in treating infections and cancer[4], "antimicrobial peptide expression" specifically describes the regulatory process governing their production rather than being a molecular target per se. Therefore it should not be listed as a canonical drug target.

Other names

Host defense peptide expressionHDP expressionAMP production