Review: Structure-Activity Relationship of Antimicrobial Peptoids

Due to their broad-spectrum activity against Gram-negative and Gram-positive bacteria, natural antimicrobial peptides (AMPs) and their synthetic analogs have emerged as prospective therapies for treating illnesses brought on by multi-drug resistant pathogens. To overcome the limitations of AMPs, suc...

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Main Authors: Priscilla L. Nyembe, Thandokuhle Ntombela, Maya M. Makatini
Format: Article
Language:English
Published: MDPI AG 2023-05-01
Series:Pharmaceutics
Subjects:
Online Access:https://www.mdpi.com/1999-4923/15/5/1506
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author Priscilla L. Nyembe
Thandokuhle Ntombela
Maya M. Makatini
author_facet Priscilla L. Nyembe
Thandokuhle Ntombela
Maya M. Makatini
author_sort Priscilla L. Nyembe
collection DOAJ
description Due to their broad-spectrum activity against Gram-negative and Gram-positive bacteria, natural antimicrobial peptides (AMPs) and their synthetic analogs have emerged as prospective therapies for treating illnesses brought on by multi-drug resistant pathogens. To overcome the limitations of AMPs, such as protease degradation, oligo-N-substituted glycines (peptoids) are a promising alternative. Despite having the same backbone atom sequence as natural peptides, peptoid structures are more stable because, unlike AMP, their functional side chains are attached to the backbone nitrogen (N)-atom rather than the alpha carbon atom. As a result, peptoid structures are less susceptible to proteolysis and enzymatic degradation. The advantages of AMPs, such as hydrophobicity, cationic character, and amphipathicity, are mimicked by peptoids. Furthermore, structure-activity relationship studies (SAR) have shown that tuning the structure of peptoids is a crucial step in developing effective antimicrobials.
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spelling doaj.art-9aa0455595ca43ce8ae147a487d80bef2023-11-18T02:52:34ZengMDPI AGPharmaceutics1999-49232023-05-01155150610.3390/pharmaceutics15051506Review: Structure-Activity Relationship of Antimicrobial PeptoidsPriscilla L. Nyembe0Thandokuhle Ntombela1Maya M. Makatini2Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South AfricaMolecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South AfricaMolecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South AfricaDue to their broad-spectrum activity against Gram-negative and Gram-positive bacteria, natural antimicrobial peptides (AMPs) and their synthetic analogs have emerged as prospective therapies for treating illnesses brought on by multi-drug resistant pathogens. To overcome the limitations of AMPs, such as protease degradation, oligo-N-substituted glycines (peptoids) are a promising alternative. Despite having the same backbone atom sequence as natural peptides, peptoid structures are more stable because, unlike AMP, their functional side chains are attached to the backbone nitrogen (N)-atom rather than the alpha carbon atom. As a result, peptoid structures are less susceptible to proteolysis and enzymatic degradation. The advantages of AMPs, such as hydrophobicity, cationic character, and amphipathicity, are mimicked by peptoids. Furthermore, structure-activity relationship studies (SAR) have shown that tuning the structure of peptoids is a crucial step in developing effective antimicrobials.https://www.mdpi.com/1999-4923/15/5/1506antimicrobial peptidesantimicrobial peptoidschain lengthcationichydrophobicitycyclization
spellingShingle Priscilla L. Nyembe
Thandokuhle Ntombela
Maya M. Makatini
Review: Structure-Activity Relationship of Antimicrobial Peptoids
Pharmaceutics
antimicrobial peptides
antimicrobial peptoids
chain length
cationic
hydrophobicity
cyclization
title Review: Structure-Activity Relationship of Antimicrobial Peptoids
title_full Review: Structure-Activity Relationship of Antimicrobial Peptoids
title_fullStr Review: Structure-Activity Relationship of Antimicrobial Peptoids
title_full_unstemmed Review: Structure-Activity Relationship of Antimicrobial Peptoids
title_short Review: Structure-Activity Relationship of Antimicrobial Peptoids
title_sort review structure activity relationship of antimicrobial peptoids
topic antimicrobial peptides
antimicrobial peptoids
chain length
cationic
hydrophobicity
cyclization
url https://www.mdpi.com/1999-4923/15/5/1506
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