1
|
Ko SJ, Kang NH, Kim MK, Park J, Park E, Park GH, Kang TW, Na DE, Park JB, Yi YE, Jeon SH, Park Y. Antibacterial and anti-biofilm activity, and mechanism of action of pleurocidin against drug resistant Staphylococcus aureus. Microb Pathog 2018; 127:70-78. [PMID: 30508627 DOI: 10.1016/j.micpath.2018.11.052] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/29/2018] [Indexed: 11/25/2022]
Abstract
The abuse of antibiotics has resulted in the emergence of multi-drug-resistant bacteria. Staphylococcus aureus is a frequent cause of infections, and antibiotic-resistant S. aureus has become a serious problem. Antimicrobial peptides play an important role in innate immunity and are attracting increasing attention as alternative antibiotics. In a previous study, pleurocidin, derived from winter flounder, was identified as a 25-amino acid antimicrobial peptide with no cytotoxicity toward mammalian cells and low hemolytic activity. In the present study, pleurocidin was observed to exhibit antimicrobial activity against gram-positive and gram-negative bacteria, especially against drug resistant S. aureus. Pleurocidin retained its antibacterial activity against drug resistant S. aureus in the presence of a physiological salt concentration. Membrane depolarization assays and propidium iodide uptake indicated that pleurocidin kills bacteria by damaging the integrity of the bacterial membrane. DNA binding assays revealed that pleurocidin binds to DNA. Thus, pleurocidin targets not only the bacterial membrane, but also their DNA. S. aureus biofilms have become a serious problem because of increased resistance to antibiotics. Therefore, we investigated the effect of pleurocidin on biofilm inhibition and eradication using crystal violet staining and microscopic observation. Pleurocidin inhibited and eradicated biofilms at low concentrations. Taken together, the results suggested that pleurocidin is a promising candidate therapeutic agent to treat drug-resistant bacteria and biofilm-related infections.
Collapse
Affiliation(s)
- Su Jin Ko
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea
| | - Na Hee Kang
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea
| | - Min Kyung Kim
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea
| | - Jonggwan Park
- Department of Bioinformatics, Kongju National University, Kongju, 38065, South Korea
| | - Eunji Park
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea
| | - Ga Hyeon Park
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | - Tae Woo Kang
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | - Da Eun Na
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | - Jin Bae Park
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | - Yae Eun Yi
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | | | - Yoonkyung Park
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea; Research Center for Proteineous Materials, Chosun University, Gwangju, 61452, South Korea.
| |
Collapse
|
2
|
Lee H, Lee DG. Arenicin-1-induced apoptosis-like response requires RecA activation and hydrogen peroxide against Escherichia coli. Curr Genet 2018; 65:167-177. [DOI: 10.1007/s00294-018-0855-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 06/05/2018] [Accepted: 06/06/2018] [Indexed: 12/25/2022]
|
3
|
Yun J, Woo ER, Lee DG. Isoquercitrin, isolated from Aster yomena triggers ROS-mediated apoptosis in Candida albicans. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.01.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|