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Ko YS, Joe YH, Seo M, Lim K, Hwang J, Woo K. Prompt and synergistic antibacterial activity of silver nanoparticle-decorated silica hybrid particles on air filtration. J Mater Chem B 2014; 2:6714-6722. [DOI: 10.1039/c4tb01068j] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Silver nanoparticle-decorated silica hybrid particles (AgNP@SiO2) bite away bacteria promptly and synergistically upon contact by air filtration.
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Affiliation(s)
- Young-Seon Ko
- Molecular Recognition Research Center
- Korea Institute of Science and Technology
- Seoul 130-650, Korea
| | - Yun Haeng Joe
- School of Mechanical Engineering
- Yonsei University
- Seoul 120-749, Korea
| | - Mihwa Seo
- Molecular Recognition Research Center
- Korea Institute of Science and Technology
- Seoul 130-650, Korea
| | - Kipil Lim
- Molecular Recognition Research Center
- Korea Institute of Science and Technology
- Seoul 130-650, Korea
| | - Jungho Hwang
- School of Mechanical Engineering
- Yonsei University
- Seoul 120-749, Korea
| | - Kyoungja Woo
- Molecular Recognition Research Center
- Korea Institute of Science and Technology
- Seoul 130-650, Korea
- Korea University of Science and Technology
- Seoul 136-701, Korea
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52
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Taniguchi M, Ikeda A, Nakamichi SI, Ishiyama Y, Saitoh E, Kato T, Ochiai A, Tanaka T. Antimicrobial activity and mechanism of action of a novel cationic α-helical octadecapeptide derived from heat shock protein 70 of rice. Peptides 2013; 48:147-55. [PMID: 23973864 DOI: 10.1016/j.peptides.2013.08.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 08/06/2013] [Accepted: 08/06/2013] [Indexed: 10/26/2022]
Abstract
Hsp70(241-258), an octadecapeptide derived from the heat shock protein 70 (Hsp70) of rice (Oryza sativa L. japonica), is a novel cationic α-helical antimicrobial peptide (AMP) that contains four lysine, two arginine, and two histidine residues. The antimicrobial activity of Hsp70(241-258) against Porphyromonas gingivalis, a periodontal pathogen, and Candida albicans, an opportunistic fungal pathogen, was quantitatively evaluated using a chemiluminescence method that measures ATP derived from viable cells. The 50% growth-inhibitory concentrations of Hsp70(241-258) against P. gingivalis and C. albicans cells were 63 μM and 70 μM, respectively. Hsp70(241-258) had little or no hemolytic activity even at 1mM, and showed negligible cytotoxicity up to 300 μM. The degrees of calcein leakage from large unilamellar vesicles, which mimic the membranes of Gram-negative bacteria, and 3,3'-dipropylthiadicarbocyanine iodide release from P. gingivalis cells induced by the addition of Hsp70(241-258) increased in a concentration-dependent manner. When Hsp70(241-258) was added to calcein-acetoxymethyl ester-loaded C. albicans cells, calcein release from the cells increased in a concentration-dependent manner. Flow cytometric analysis also showed that the percentages of C. albicans cells stained with propidium iodide, a DNA-intercalating dye, increased as the concentration of Hsp70(241-258) added was increased. Therefore, Hsp70(241-258) appears to exhibit antimicrobial activity against P. gingivalis and C. albicans through membrane disruption. These results suggest that Hsp70(241-258) could be useful as a safe and potent AMP against P. gingivalis and C. albicans in many fields of health care, especially in the control of oral infections.
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Affiliation(s)
- Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan; Center for Transdisciplinary Research, Niigata University, Niigata 950-2181, Japan.
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53
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Lu NY, Yang K, Li JL, Yuan B, Ma YQ. Vesicle deposition and subsequent membrane–melittin interactions on different substrates: A QCM-D experiment. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1828:1918-25. [DOI: 10.1016/j.bbamem.2013.04.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 02/21/2013] [Accepted: 04/12/2013] [Indexed: 01/08/2023]
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54
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Yadav S, Joshi S, Qadar Pasha MA, Pasha S. Antimicrobial activity and mode of action of novel, N-terminal tagged tetra-peptidomimetics. MEDCHEMCOMM 2013. [DOI: 10.1039/c3md20311e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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55
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Two hits are better than one: membrane-active and DNA binding-related double-action mechanism of NK-18, a novel antimicrobial peptide derived from mammalian NK-lysin. Antimicrob Agents Chemother 2012; 57:220-8. [PMID: 23089755 DOI: 10.1128/aac.01619-12] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The extensive use and misuse of antibiotics in medicine result in the emergence of multidrug-resistant bacteria, creating an urgent need for the development of new chemotherapeutic agents. Nowadays, antimicrobial peptides are widely recognized as a class of promising candidates with activity against multidrug-resistant bacteria. NK-18 is a truncated peptide derived from NK-Lysin, an effector of cytotoxic T cells and natural killer cells. In this study, we studied the antibacterial mechanism of action of NK-18. The results revealed that NK-18 has potent antibacterial activity against Escherichia coli and Staphylococcus aureus. According to our findings, NK-18 is membrane active and its target of action is not only the bacterial membrane but also the DNA in the cytoplasm. The double targets of NK-18 make it difficult for bacteria to generate resistance, which may present a new strategy to defend against multidrug-resistant bacteria and provide a new lead in the design of potent antimicrobial peptides with therapeutic application in the presence of increasing resistance to conventional antibiotics.
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56
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Joshi S, Bisht GS, Rawat DS, Maiti S, Pasha S. Comparative mode of action of novel hybrid peptide CS-1a and its rearranged amphipathic analogue CS-2a. FEBS J 2012; 279:3776-90. [DOI: 10.1111/j.1742-4658.2012.08738.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 07/30/2012] [Accepted: 08/06/2012] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Souvik Maiti
- Proteomics and Structural Biology Unit; Institute of Genomics & Integrative Biology; Delhi; India
| | - Santosh Pasha
- Peptide Research Laboratory; Institute of Genomics & Integrative Biology; Delhi; India
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57
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Antibacterial activity and dual mechanisms of peptide analog derived from cell-penetrating peptide against Salmonella typhimurium and Streptococcus pyogenes. Appl Microbiol Biotechnol 2012; 97:1711-23. [DOI: 10.1007/s00253-012-4352-1] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 06/29/2012] [Accepted: 08/02/2012] [Indexed: 10/28/2022]
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58
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Lu N, Yang K, Yuan B, Ma Y. Molecular response and cooperative behavior during the interactions of melittin with a membrane: dissipative quartz crystal microbalance experiments and simulations. J Phys Chem B 2012; 116:9432-8. [PMID: 22794087 DOI: 10.1021/jp305141r] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The molecular-level interactions of an antimicrobial peptide melittin with supported membrane were studied by the combination of dissipative quartz crystal microbalance (QCM-D) experiments and computer simulations. We found the response behavior of lipids upon peptide adsorption greatly influence their interactions. The perturbance and reorientation of the lipid in liquid phase facilitate the insertion of melittin in a trans-membrane way, but in solid phase, asymmetrical membrane disruption happens. Apart from the lipid state, the local peptide-to-lipid ratio also affects the insertion capacity of melittin. When the local peptide number density is high, adjacent peptides can cooperatively penetrate into the membrane. This observation explains the occurrence of the conventional "carpet" mechanism.
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Affiliation(s)
- Naiyan Lu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P. R. China
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59
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Li L, Shi Y, Su G, Le G. Selectivity for and destruction of Salmonella typhimurium via a membrane damage mechanism of a cell-penetrating peptide ppTG20 analogue. Int J Antimicrob Agents 2012; 40:337-43. [PMID: 22819152 DOI: 10.1016/j.ijantimicag.2012.05.026] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Revised: 04/18/2012] [Accepted: 05/18/2012] [Indexed: 12/01/2022]
Abstract
P7, an analogue of the cell-penetrating peptide (CPP) ppTG20, was derived by replacing Phe and Trp with Arg based on the structure-activity relationships of CPPs and antimicrobial peptides (AMPs). P7 showed antimicrobial activity against Salmonella typhimurium at 4 μM and possessed broad antimicrobial activity greater than its parent peptide. P7 displayed good selectivity, with low haemolysis below its minimum inhibitory concentration range, but displayed cytotoxic activity against the HT29 and MDA-MB231 mammalian cell lines. Studies of calcein leakage from egg yolk L-α-phosphatidylcholine/egg yolk L-α-phosphatidyl-DL-glycerol (EYPC/EYPG) (bacterial membrane mimic) and EYPC/cholesterol (eukaryotic membrane mimic) vesicles also demonstrated that P7 exhibited high selectivity and caused pore formation in the bacterial membrane. Circular dichroism experiments suggested that the conformation of P7 underwent transitions from a random coil in sodium phosphate buffer to an α-helical conformation in bacterial model membranes. P7 induced influx of the membrane fluorescent probe 1-N-phenylnaphthylamine (NPN) and the nucleic acid fluorescent probe SYTOX(®) Green by increasing live S. typhimurium cell outer membrane and plasma membrane permeability, respectively. P7 also induced ion channel formation in the cell plasma membrane causing leakage of potassium ions. Flow cytometric analysis demonstrated that S. typhimurium cell membrane integrity was destroyed following incubation with P7. These results indicated that P7 exhibited good bacterial selectivity and exerted its antibacterial activity by a membrane damage mechanism. Furthermore, these results suggested that CPPs may represent a source of templates for AMP design.
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Affiliation(s)
- LiRong Li
- The State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
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60
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Affiliation(s)
- Beena
- Department of Chemistry; University of Delhi; Delhi; 110007; India
| | - Diwan S. Rawat
- Department of Chemistry; University of Delhi; Delhi; 110007; India
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61
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Joshi S, Dewangan RP, Yadav S, Rawat DS, Pasha S. Synthesis, antibacterial activity and mode of action of novel linoleic acid–dipeptide–spermidine conjugates. Org Biomol Chem 2012; 10:8326-35. [DOI: 10.1039/c2ob26393a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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62
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Bansal S, Syan N, Mathur P, Choudhary S. Pharmacological profile of green tea and its polyphenols: a review. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9800-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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63
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Epand RF, Mor A, Epand RM. Lipid complexes with cationic peptides and OAKs; their role in antimicrobial action and in the delivery of antimicrobial agents. Cell Mol Life Sci 2011; 68:2177-88. [PMID: 21573783 PMCID: PMC11114973 DOI: 10.1007/s00018-011-0711-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 04/26/2011] [Accepted: 04/26/2011] [Indexed: 12/31/2022]
Abstract
Antimicrobial agents are toxic to bacteria by a variety of mechanisms. One mechanism that is very dependent on the lipid composition of the bacterial membrane is the clustering of anionic lipid by cationic antimicrobial agents. Certain species of oligo-acyl-lysine (OAK) antimicrobial agents are particularly effective in clustering anionic lipids in mixtures mimicking the composition of bacterial membranes. The clustering of anionic lipids by certain cationic antimicrobial agents contributes to the anti-bacterial action of these agents. Bacterial membrane lipids are a determining factor, resulting in some species of bacteria being more susceptible than others. In addition, lipids can be used to increase the effectiveness of antimicrobial agents when administered in vivo. Therefore, we review some of the structures in which lipid mixtures can assemble, to more effectively be utilized as antimicrobial delivery systems. We describe in more detail the complexes formed between mixtures of lipids mimicking bacterial membranes and an OAK and their usefulness in synergizing with antibiotics to overcome bacterial multidrug resistance.
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Affiliation(s)
- Raquel F Epand
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, L8N 3Z5, Canada.
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64
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Gauri SS, Mandal SM, Pati BR, Dey S. Purification and structural characterization of a novel antibacterial peptide from Bellamya bengalensis: activity against ampicillin and chloramphenicol resistant Staphylococcus epidermidis. Peptides 2011; 32:691-6. [PMID: 21262297 DOI: 10.1016/j.peptides.2011.01.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Revised: 01/03/2011] [Accepted: 01/03/2011] [Indexed: 11/17/2022]
Abstract
Increasing tendency of clinical bacterial strains resistant to conventional antibiotics has being a great challenge to the public's health. Antimicrobial peptides, a new class of antibiotics is known to have the activity against a wide range of bacteria resistant to conventional antibiotics. An antimicrobial peptide of 1676 Da was purified from Bellamya bengalensis, a fresh water snail, using ultrafiltration and reversed phase liquid chromatography. The effect of this peptide on Staphylococcus epidermidis resistant to ampicillin and chloramphenicol was investigated; the MIC and MBC values were 8 μg/ml and 16 μg/ml, respectively. Complete sequence of the peptide was determined by tandem mass spectrometry (MS/MS). Further, peptide net charge, hydrophobicity and molecular modeling were evaluated in silico for better understanding the probable mechanisms of action. The peptide showed the specificity to bacterial membranes. Hence, this reported peptide revealed a promising candidate to contribute in the development of therapeutic agent for Staphylococcal infections.
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Affiliation(s)
- Samiran S Gauri
- Central Research Facility, Indian Institute of Technology Kharagpur, Kharagpur 721302, WB, India
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65
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Sharma M, Joshi P, Kumar N, Joshi S, Rohilla RK, Roy N, Rawat DS. Synthesis, antimicrobial activity and structure–activity relationship study of N,N-dibenzyl-cyclohexane-1,2-diamine derivatives. Eur J Med Chem 2011; 46:480-7. [DOI: 10.1016/j.ejmech.2010.11.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 11/15/2010] [Accepted: 11/17/2010] [Indexed: 02/02/2023]
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66
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Epand RM, Epand RF. Bacterial membrane lipids in the action of antimicrobial agents. J Pept Sci 2010; 17:298-305. [DOI: 10.1002/psc.1319] [Citation(s) in RCA: 221] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 09/22/2010] [Accepted: 09/23/2010] [Indexed: 11/08/2022]
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67
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Hph1 and Hph2 are novel components of the Sec63/Sec62 posttranslational translocation complex that aid in vacuolar proton ATPase biogenesis. EUKARYOTIC CELL 2010; 10:63-71. [PMID: 21097665 DOI: 10.1128/ec.00241-10] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Hph1 and Hph2 are homologous integral endoplasmic reticulum (ER) membrane proteins required for Saccharomyces cerevisiae survival under environmental stress conditions. To investigate the molecular functions of Hph1 and Hph2, we carried out a split-ubiquitin-membrane-based yeast two-hybrid screen and identified their interactions with Sec71, a subunit of the Sec63/Sec62 complex, which mediates posttranslational translocation of proteins into the ER. Hph1 and Hph2 likely function in posttranslational translocation, as they interact with other Sec63/Sec62 complex subunits, i.e., Sec72, Sec62, and Sec63. hph1Δ hph2Δ cells display reduced vacuole acidification; increased instability of Vph1, a subunit of vacuolar proton ATPase (V-ATPase); and growth defects similar to those of mutants lacking V-ATPase activity. sec71Δ cells exhibit similar phenotypes, indicating that Hph1/Hph2 and the Sec63/Sec62 complex function during V-ATPase biogenesis. Hph1/Hph2 and the Sec63/Sec62 complex may act together in this process, as vacuolar acidification and Vph1 stability are compromised to the same extent in hph1Δ hph2Δ and hph1Δ hph2Δ sec71Δ cells. In contrast, loss of Pkr1, an ER protein that promotes posttranslocation assembly of Vph1 with V-ATPase subunits, further exacerbates hph1Δ hph2Δ phenotypes, suggesting that Hph1 and Hph2 function independently of Pkr1-mediated V-ATPase assembly. We propose that Hph1 and Hph2 aid Sec63/Sec62-mediated translocation of specific proteins, including factors that promote efficient biogenesis of V-ATPase, to support yeast cell survival during environmental stress.
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