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Meier S, Ridgway ZM, Picciano AL, Caputo GA. Impacts of Hydrophobic Mismatch on Antimicrobial Peptide Efficacy and Bilayer Permeabilization. Antibiotics (Basel) 2023; 12:1624. [PMID: 37998826 PMCID: PMC10669323 DOI: 10.3390/antibiotics12111624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/25/2023] Open
Abstract
Antimicrobial resistance continues to be a major threat to world health, with the continued emergence of resistant bacterial strains. Antimicrobial peptides have emerged as an attractive option for the development of novel antimicrobial compounds in part due to their ubiquity in nature and the general lack of resistance development to this class of molecules. In this work, we analyzed the antimicrobial peptide C18G and several truncated forms for efficacy and the underlying mechanistic effects of the sequence truncation. The peptides were screened for antimicrobial efficacy against several standard laboratory strains, and further analyzed using fluorescence spectroscopy to evaluate binding to model lipid membranes and bilayer disruption. The results show a clear correlation between the length of the peptide and the antimicrobial efficacy. Furthermore, there is a correlation between peptide length and the hydrophobic thickness of the bilayer, indicating that hydrophobic mismatch is likely a contributing factor to the loss of efficacy in shorter peptides.
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Affiliation(s)
- Steven Meier
- Department of Chemistry & Biochemistry, Rowan University, Glassboro, NJ 08028, USA (A.L.P.)
| | - Zachary M. Ridgway
- Department of Chemistry & Biochemistry, Rowan University, Glassboro, NJ 08028, USA (A.L.P.)
| | - Angela L. Picciano
- Department of Chemistry & Biochemistry, Rowan University, Glassboro, NJ 08028, USA (A.L.P.)
| | - Gregory A. Caputo
- Department of Chemistry & Biochemistry, Rowan University, Glassboro, NJ 08028, USA (A.L.P.)
- Department of Biological & Biomedical Sciences, Rowan University, Glassboro, NJ 08028, USA
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Martin LD, Rowe AK, Nomenjanahary ES, Ridgway ZM, Wright PC, Deppe AM. A population survey of sympatric cheirogaleids in southwestern Madagascar. Afr J Ecol 2022. [DOI: 10.1111/aje.12960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Luke D. Martin
- School of Archaeology and Anthropology College of Arts and Social Sciences The Australian National University Canberra ACT Australia
| | - Amanda K. Rowe
- Interdepartmental Doctoral Program in Anthropological Sciences Stony Brook University Stony Brook New York USA
| | - Eva S. Nomenjanahary
- Department of Biological Anthropology University of Antananarivo Antananarivo Madagascar
| | | | - Patricia C. Wright
- Interdepartmental Doctoral Program in Anthropological Sciences Stony Brook University Stony Brook New York USA
- Department of Anthropology Stony Brook University Stony Brook New York USA
- Centre ValBio Ranomafana Madagascar
| | - Anja M. Deppe
- School of Archaeology and Anthropology College of Arts and Social Sciences The Australian National University Canberra ACT Australia
- Centre ValBio Ranomafana Madagascar
- School of Biosciences The University of Birmingham Birmingham UK
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Rowe AK, Donohue ME, Clare EL, Drinkwater R, Koenig A, Ridgway ZM, Martin LD, Nomenjanahary ES, Zakamanana F, Randriamanandaza LJ, Rakotonirina TE, Wright PC. Exploratory analysis reveals arthropod consumption in 10 lemur species using DNA metabarcoding. Am J Primatol 2021; 83:e23256. [PMID: 33818786 DOI: 10.1002/ajp.23256] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 01/27/2021] [Accepted: 03/01/2021] [Indexed: 12/15/2022]
Abstract
Arthropods (insects, spiders, etc.) can fulfill major nutritional requirements for primates, particularly in terms of proteins, fats, vitamins, and minerals. Yet, for many primate species we know very little about the frequency and importance of arthropod consumption. Traditional methods for arthropod prey identification, such as behavioral observations and fecal dissections, offer limited taxonomic resolution and, as a result, underestimate true diversity. Metabarcoding arthropod DNA from primate fecal samples provides a promising but underused alternative. Here, we inventoried arthropod prey diversity in wild lemurs by sequencing two regions of the CO1 gene. Samples were collected opportunistically from 10 species of lemurs inhabiting three national parks in southern Madagascar using a combination of focal animal follows and live trapping. In total, we detected arthropod DNA in 98 of the 170 fecal samples analyzed. Although all lemur species included in these analyses showed evidence of arthropod consumption, those within the family Cheirogaleidae appeared to consume the highest frequency and diversity of arthropods. To our knowledge, this study presents the first evidence of arthropod consumption in Phaner pallescens, Avahi peyrierasi, and Propithecus verreauxi, and identifies 32 families of arthropods as probable food items that have not been published as lemur dietary items to date. Our study emphasizes the importance of arthropods as a nutritional source and the role DNA metabarcoding can play in elucidating an animal's diet.
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Affiliation(s)
- Amanda K Rowe
- Interdepartmental Doctoral Program in Anthropological Sciences, Stony Brook University, Stony Brook, New York, USA
| | - Mariah E Donohue
- Department of Biology, University of Kentucky, Lexington, Kentucky, USA
| | - Elizabeth L Clare
- School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Rosie Drinkwater
- School of Biological and Chemical Sciences, Queen Mary University of London, London, UK
| | - Andreas Koenig
- Interdepartmental Doctoral Program in Anthropological Sciences, Stony Brook University, Stony Brook, New York, USA.,Department of Anthropology, Stony Brook University, Stony Brook, New York, USA
| | - Zachary M Ridgway
- Department of Chemistry, Stony Brook University, Stony Brook, New York, USA
| | - Luke D Martin
- School of Archaeology and Anthropology, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Eva S Nomenjanahary
- Department of Biological Anthropology, University of Antananarivo, Antananarivo, Madagascar
| | | | | | | | - Patricia C Wright
- Interdepartmental Doctoral Program in Anthropological Sciences, Stony Brook University, Stony Brook, New York, USA.,Department of Anthropology, Stony Brook University, Stony Brook, New York, USA
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