author_facet Dong, Na
Wang, Chensi
Zhang, Tingting
Zhang, Lei
Xue, Chenyu
Feng, Xinjun
Bi, Chongpeng
Shan, Anshan
Dong, Na
Wang, Chensi
Zhang, Tingting
Zhang, Lei
Xue, Chenyu
Feng, Xinjun
Bi, Chongpeng
Shan, Anshan
author Dong, Na
Wang, Chensi
Zhang, Tingting
Zhang, Lei
Xue, Chenyu
Feng, Xinjun
Bi, Chongpeng
Shan, Anshan
spellingShingle Dong, Na
Wang, Chensi
Zhang, Tingting
Zhang, Lei
Xue, Chenyu
Feng, Xinjun
Bi, Chongpeng
Shan, Anshan
International Journal of Molecular Sciences
Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
Inorganic Chemistry
Organic Chemistry
Physical and Theoretical Chemistry
Computer Science Applications
Spectroscopy
Molecular Biology
General Medicine
Catalysis
author_sort dong, na
spelling Dong, Na Wang, Chensi Zhang, Tingting Zhang, Lei Xue, Chenyu Feng, Xinjun Bi, Chongpeng Shan, Anshan 1422-0067 MDPI AG Inorganic Chemistry Organic Chemistry Physical and Theoretical Chemistry Computer Science Applications Spectroscopy Molecular Biology General Medicine Catalysis http://dx.doi.org/10.3390/ijms20163954 <jats:p>Antibacterial peptides (APMs) are a new type of antibacterial substance. The relationship between their structure and function remains indistinct; in particular, there is a lack of a definitive and fixed template for designing new antimicrobial peptides. Previous studies have shown that porcine Protegrin-1 (PG-1) exhibits considerable antimicrobial activity and cytotoxicity. In this study, to reduce cytotoxicity and increase cell selectivity, we designed histidine-rich peptides based on the sequence template RR(XY)2XDPGX(YX)2RR-NH2, where X represents I, W, V, and F. The results showed that the peptides form more β-hairpin structures in a lipid-rich environment that mimics cell membranes. Among them, the antimicrobial peptide HV2 showed strong antibacterial activity against Gram-negative strains and almost no toxicity to normal cells. The results of our analysis of its antibacterial mechanism showed that peptide HV2 acts on the bacterial cell membrane to increase its permeability, resulting in cell membrane disruption and death. Furthermore, peptide HV2 inhibited bacterial movement in a concentration-dependent manner and had a more robust anti-inflammatory effect by inhibiting the production of TNF-α. In summary, peptide HV2 exhibits high bactericidal activity and cell selectivity, making it a promising candidate for future use as an antibiotic.</jats:p> Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria International Journal of Molecular Sciences
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series International Journal of Molecular Sciences
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title Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_unstemmed Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_full Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_fullStr Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_full_unstemmed Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_short Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_sort bioactivity and bactericidal mechanism of histidine-rich β-hairpin peptide against gram-negative bacteria
topic Inorganic Chemistry
Organic Chemistry
Physical and Theoretical Chemistry
Computer Science Applications
Spectroscopy
Molecular Biology
General Medicine
Catalysis
url http://dx.doi.org/10.3390/ijms20163954
publishDate 2019
physical 3954
description <jats:p>Antibacterial peptides (APMs) are a new type of antibacterial substance. The relationship between their structure and function remains indistinct; in particular, there is a lack of a definitive and fixed template for designing new antimicrobial peptides. Previous studies have shown that porcine Protegrin-1 (PG-1) exhibits considerable antimicrobial activity and cytotoxicity. In this study, to reduce cytotoxicity and increase cell selectivity, we designed histidine-rich peptides based on the sequence template RR(XY)2XDPGX(YX)2RR-NH2, where X represents I, W, V, and F. The results showed that the peptides form more β-hairpin structures in a lipid-rich environment that mimics cell membranes. Among them, the antimicrobial peptide HV2 showed strong antibacterial activity against Gram-negative strains and almost no toxicity to normal cells. The results of our analysis of its antibacterial mechanism showed that peptide HV2 acts on the bacterial cell membrane to increase its permeability, resulting in cell membrane disruption and death. Furthermore, peptide HV2 inhibited bacterial movement in a concentration-dependent manner and had a more robust anti-inflammatory effect by inhibiting the production of TNF-α. In summary, peptide HV2 exhibits high bactericidal activity and cell selectivity, making it a promising candidate for future use as an antibiotic.</jats:p>
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author Dong, Na, Wang, Chensi, Zhang, Tingting, Zhang, Lei, Xue, Chenyu, Feng, Xinjun, Bi, Chongpeng, Shan, Anshan
author_facet Dong, Na, Wang, Chensi, Zhang, Tingting, Zhang, Lei, Xue, Chenyu, Feng, Xinjun, Bi, Chongpeng, Shan, Anshan, Dong, Na, Wang, Chensi, Zhang, Tingting, Zhang, Lei, Xue, Chenyu, Feng, Xinjun, Bi, Chongpeng, Shan, Anshan
author_sort dong, na
container_issue 16
container_start_page 0
container_title International Journal of Molecular Sciences
container_volume 20
description <jats:p>Antibacterial peptides (APMs) are a new type of antibacterial substance. The relationship between their structure and function remains indistinct; in particular, there is a lack of a definitive and fixed template for designing new antimicrobial peptides. Previous studies have shown that porcine Protegrin-1 (PG-1) exhibits considerable antimicrobial activity and cytotoxicity. In this study, to reduce cytotoxicity and increase cell selectivity, we designed histidine-rich peptides based on the sequence template RR(XY)2XDPGX(YX)2RR-NH2, where X represents I, W, V, and F. The results showed that the peptides form more β-hairpin structures in a lipid-rich environment that mimics cell membranes. Among them, the antimicrobial peptide HV2 showed strong antibacterial activity against Gram-negative strains and almost no toxicity to normal cells. The results of our analysis of its antibacterial mechanism showed that peptide HV2 acts on the bacterial cell membrane to increase its permeability, resulting in cell membrane disruption and death. Furthermore, peptide HV2 inhibited bacterial movement in a concentration-dependent manner and had a more robust anti-inflammatory effect by inhibiting the production of TNF-α. In summary, peptide HV2 exhibits high bactericidal activity and cell selectivity, making it a promising candidate for future use as an antibiotic.</jats:p>
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spelling Dong, Na Wang, Chensi Zhang, Tingting Zhang, Lei Xue, Chenyu Feng, Xinjun Bi, Chongpeng Shan, Anshan 1422-0067 MDPI AG Inorganic Chemistry Organic Chemistry Physical and Theoretical Chemistry Computer Science Applications Spectroscopy Molecular Biology General Medicine Catalysis http://dx.doi.org/10.3390/ijms20163954 <jats:p>Antibacterial peptides (APMs) are a new type of antibacterial substance. The relationship between their structure and function remains indistinct; in particular, there is a lack of a definitive and fixed template for designing new antimicrobial peptides. Previous studies have shown that porcine Protegrin-1 (PG-1) exhibits considerable antimicrobial activity and cytotoxicity. In this study, to reduce cytotoxicity and increase cell selectivity, we designed histidine-rich peptides based on the sequence template RR(XY)2XDPGX(YX)2RR-NH2, where X represents I, W, V, and F. The results showed that the peptides form more β-hairpin structures in a lipid-rich environment that mimics cell membranes. Among them, the antimicrobial peptide HV2 showed strong antibacterial activity against Gram-negative strains and almost no toxicity to normal cells. The results of our analysis of its antibacterial mechanism showed that peptide HV2 acts on the bacterial cell membrane to increase its permeability, resulting in cell membrane disruption and death. Furthermore, peptide HV2 inhibited bacterial movement in a concentration-dependent manner and had a more robust anti-inflammatory effect by inhibiting the production of TNF-α. In summary, peptide HV2 exhibits high bactericidal activity and cell selectivity, making it a promising candidate for future use as an antibiotic.</jats:p> Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria International Journal of Molecular Sciences
spellingShingle Dong, Na, Wang, Chensi, Zhang, Tingting, Zhang, Lei, Xue, Chenyu, Feng, Xinjun, Bi, Chongpeng, Shan, Anshan, International Journal of Molecular Sciences, Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria, Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Computer Science Applications, Spectroscopy, Molecular Biology, General Medicine, Catalysis
title Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_full Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_fullStr Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_full_unstemmed Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_short Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
title_sort bioactivity and bactericidal mechanism of histidine-rich β-hairpin peptide against gram-negative bacteria
title_unstemmed Bioactivity and Bactericidal Mechanism of Histidine-Rich β-Hairpin Peptide Against Gram-Negative Bacteria
topic Inorganic Chemistry, Organic Chemistry, Physical and Theoretical Chemistry, Computer Science Applications, Spectroscopy, Molecular Biology, General Medicine, Catalysis
url http://dx.doi.org/10.3390/ijms20163954