Isolation and Characterization of Antimicrobial Peptides Isolated from Brevibacillus halotolerans 7WMA2 for the Activity Against Multidrug-Resistant Pathogens

Multidrug resistance to pathogens has posed a severe threat to public health. The threat could be addressed by antimicrobial peptides (AMPs) with broad-spectrum suppression. In this study, Brevibacillus halotolerans 7WMA2, isolated from marine sediment, produced AMPs against Gram-positive and Gram-n...

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Veröffentlicht in:Molecular biotechnology 2024-12, Vol.66 (12), p.3618-3627
Hauptverfasser: Le Han, Ho, Pham, Phu Tran Vinh, Kim, Song-Gun, Chan, Sook Sin, Khoo, Kuan Shiong, Chew, Kit Wayne, Show, Pau Loke, Tran, Thi Ngoc Thu, Nguyen, Hai Thi Viet, Nguyen, Phuong Thi Dong
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container_end_page 3627
container_issue 12
container_start_page 3618
container_title Molecular biotechnology
container_volume 66
creator Le Han, Ho
Pham, Phu Tran Vinh
Kim, Song-Gun
Chan, Sook Sin
Khoo, Kuan Shiong
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Show, Pau Loke
Tran, Thi Ngoc Thu
Nguyen, Hai Thi Viet
Nguyen, Phuong Thi Dong
description Multidrug resistance to pathogens has posed a severe threat to public health. The threat could be addressed by antimicrobial peptides (AMPs) with broad-spectrum suppression. In this study, Brevibacillus halotolerans 7WMA2, isolated from marine sediment, produced AMPs against Gram-positive and Gram-negative bacteria. The AMPs were precipitated by ammonium sulfate 30% (w/v) from culture broth and dialyzed by a 1 kDa membrane. Tryptone Soy Agar (TSA) was used for the cultivation and resulted in the largest bacteria-inhibiting zones under aerobic conditions at 25 °C, 48 h. An SDS-PAGE gel overlay test revealed that strain 7WMA2 could produce AMPs of 5–10 kDa and showed no degradation when held at 121 °C for 30 min at a wide pH 2–12 range. The AMPs did not cause toxicity to HeLa cells with concentrations up to 500 µg/mL while increasing the arbitrary unit up to eight times. The study showed that the AMPs produced were unique, with broad-spectrum antimicrobial ability. Graphical Abstract
doi_str_mv 10.1007/s12033-023-00963-0
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subjects Aerobic conditions
agar
Ammonium
Ammonium sulfate
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - isolation & purification
Anti-Bacterial Agents - pharmacology
Antimicrobial peptides
Antimicrobial Peptides - chemistry
Antimicrobial Peptides - isolation & purification
Antimicrobial Peptides - pharmacology
Bacteria
Biochemistry
Biological Techniques
Biotechnology
Brevibacillus
Cell Biology
Cell culture
Chemistry
Chemistry and Materials Science
culture media
Drug resistance
Drug Resistance, Multiple, Bacterial - drug effects
Gram-negative bacteria
Gram-Negative Bacteria - drug effects
Gram-positive bacteria
Gram-Positive Bacteria - drug effects
HeLa Cells
Human Genetics
Humans
Marine sediments
Microbial Sensitivity Tests
Multidrug resistance
Multidrug resistant organisms
multiple drug resistance
Original Paper
Pathogens
Peptides
polyacrylamide gel electrophoresis
Protein Science
Public health
Toxicity
tryptones
title Isolation and Characterization of Antimicrobial Peptides Isolated from Brevibacillus halotolerans 7WMA2 for the Activity Against Multidrug-Resistant Pathogens
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