Characterising four sarconesiopsis magellanica (Diptera: Calliphoridae) larval fat body-derived antimicrobial peptides
DOI
https://doi.org/10.1590/0074-02760200587
Document Type
Article
Publication Date
1-1-2021
Publication Title
Memorias do Instituto Oswaldo Cruz
Abstract
BACKGROUND The inappropriate use of antibiotics has led to the accelerated growth of resistance to antibiotics. The search for new therapeutic strategies (i.e., antimicrobial peptides-AMPs) has thus become a pressing need. METHODS Fat body extracts were analysed by reversed-phase high-performance liquid chromatography (RP-HPLC); mass spectrometry was used for characterising the primary structure of the AMPs so found. ProtParam (Expasy) was used for analysing the AMPs’ physico-chemical properties. Synthetic AMPs’ antibacterial activity was evaluated. FINDINGS Four new AMPs were obtained and called sarconesin III, IV, V and VI. Sarconesin III had an α-helix structure and sarconesins IV, V and VI had linear formations. Oligomer prediction highlighted peptide-peptide interactions, suggesting that sarconesins III, V and VI could form self-aggregations when in contact with the microbial membrane. AMPs synthesised from their native molecules’ sequences had potent activity against Gram-positive bacteria and, to a lesser extent, against Gram-negative and drug-resistant bacteria. Sarconesin VI was the most efficient AMP. None of the four synthetic AMPs had a cytotoxic effect. MAIN CONCLUSIONS S. magellanica larval fat body-derived antimicrobial peptides are an important source of AMPs and could be used in different antimicrobial therapies and overcoming bacterial resistance.
Volume
116
Issue
1
ISSN
00740276
Recommended Citation
Pérez, Cindy; Díaz-Roa, Andrea; Bernal, Yuly; Arenas, Nelson E.; Kalume, Dario Eluan; Côrtes, Luzia Monteiro de Castro; da Silva Junior, Pedro I.; Varela, Yahson; Patarroyo, Manuel A.; Torres, Orlando; and Bello, Felio J., "Characterising four sarconesiopsis magellanica (Diptera: Calliphoridae) larval fat body-derived antimicrobial peptides" (2021). Scopus Unisalle. 908.
https://ciencia.lasalle.edu.co/scopus_unisalle/908
PubMed ID
34287503
Identifier
85110356739 (Scopus)