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Bestrophin‐derived peptide, WP17 , elicits cell wall disruption‐mediated bactericidal activity against Micrococcus luteus and anti‐neoplastic effect against murine melanoma cells
Author(s) -
Ravichandran Gayathri,
Raju Stefi V.,
Sarkar Purabi,
N. T. Saraswathi,
Al Olayan Ebtesam M.,
Aloufi Abeer S.,
Elokaby Mohamed A.,
Arshad Aziz,
Mala Kanchana,
Arockiaraj Jesu
Publication year - 2021
Publication title -
peptide science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.533
H-Index - 7
ISSN - 2475-8817
DOI - 10.1002/pep2.24220
Subject(s) - micrococcus luteus , microbiology and biotechnology , biology , antimicrobial peptides , antimicrobial , staphylococcus aureus , bacillus subtilis , peptide , escherichia coli , cytotoxicity , vibrio alginolyticus , biochemistry , bacteria , gene , vibrio , in vitro , genetics
The cDNa sequence of Bestrophin‐1 (BEST‐1) was identified from a previously constructed transcriptome data set of freshwater prawn Macrobrachium rosenbergii ( Mr ). Basal and temporal gene expression analysis of Mr BEST‐1 showed its antimicrobial immune effectiveness during viral and bacterial infections. The protein sequence encoded by cDNA of Mr BEST‐1 was examined and a short antimicrobial molecule, named WP17 was identified using a bioinformatics tool. Further, the antibacterial ability of the identified WP17 peptide was evaluated against a number of bacterial strains, in which the peptide showed potential bactericidal activity against Micrococcus luteus (MTCC 6164), Staphylococcus aureus (ATCC 9144), Escherichia coli (ATCC 9637), Klebsiella pneumonia (CI 7376) and Bacillus subtilis (ATCC 6051). Based on the results, further assays focused on M. luteus MTCC 6164. The mode of action of Mr WP17 on M. luteus MTCC 6164 was analyzed using FACS and FESEM. Toxicity analysis suggested that WP17 impaired the viability of cells in murine melanoma cells (B16F10); however, no cytotoxicity was observed against kidney embryonic cells (HEK293), even at higher concentrations. Similarly, the gene expression analysis of WP17 peptide treated murine cells elicited an extrinsic apoptotic pathway. In the present study, we have demonstrated the involvement of Mr BEST‐1 in immune mechanisms through its short peptide molecule that has potential antimicrobial activity.