1
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Dugić M, Brzobohatá H, Mojr V, Dolejšová T, Lišková P, Do Pham DD, Rejman D, Mikušová G, Fišer R. LEGO-lipophosphonoxins: length of hydrophobic module affects permeabilizing activity in target membranes of different phospholipid composition. RSC Adv 2024; 14:2745-2756. [PMID: 38234873 PMCID: PMC10792433 DOI: 10.1039/d3ra07251g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 01/05/2024] [Indexed: 01/19/2024] Open
Abstract
In the past few decades, society has faced rapid development and spreading of antimicrobial resistance due to antibiotic misuse and overuse and the immense adaptability of bacteria. Difficulties in obtaining effective antimicrobial molecules from natural sources challenged scientists to develop synthetic molecules with antimicrobial effect. We developed modular molecules named LEGO-Lipophosphonoxins (LEGO-LPPO) capable of inducing cytoplasmic membrane perforation. In this structure-activity relationship study we focused on the role of the LEGO-LPPO hydrophobic module directing the molecule insertion into the cytoplasmic membrane. We selected three LEGO-LPPO molecules named C9, C8 and C7 differing in the length of their hydrophobic chain and consisting of an alkenyl group containing one double bond. The molecule with the long hydrophobic chain (C9) was shown to be the most effective with the lowest MIC and highest perforation rate both in vivo and in vitro. We observed high antimicrobial activity against both G+ and G- bacteria with significant differences in LEGO-LPPOs mechanism of action on these two cell types. We observed a highly cooperative mechanism of LEGO-LPPO action on G- bacteria as well as on liposomes resembling G- bacteria. LEGO-LPPO action on G- bacteria was significantly slower compared to G+ bacteria suggesting the role of the outer membrane in affecting the LEGO-LPPOs perforation rate. This notion was supported by the higher sensitivity of the E. coli strain with a compromised outer membrane. Finally, we noted that the composition of the cytoplasmic membrane affects the activity of LEGO-LPPOs since the presence of phosphatidylethanolamine increases their membrane disrupting activity.
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Affiliation(s)
- Milica Dugić
- Department of Genetics and Microbiology, Faculty of Science, Charles University Viničná 5 128 00 Prague 2 Czech Republic
| | - Hana Brzobohatá
- Department of Genetics and Microbiology, Faculty of Science, Charles University Viničná 5 128 00 Prague 2 Czech Republic
| | - Viktor Mojr
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences v. v. i. Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Tereza Dolejšová
- Department of Genetics and Microbiology, Faculty of Science, Charles University Viničná 5 128 00 Prague 2 Czech Republic
| | - Petra Lišková
- Department of Genetics and Microbiology, Faculty of Science, Charles University Viničná 5 128 00 Prague 2 Czech Republic
| | - Duy Dinh Do Pham
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences v. v. i. Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Dominik Rejman
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences v. v. i. Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Gabriela Mikušová
- Department of Genetics and Microbiology, Faculty of Science, Charles University Viničná 5 128 00 Prague 2 Czech Republic
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences v. v. i. Flemingovo nám. 2 166 10 Prague 6 Czech Republic
| | - Radovan Fišer
- Department of Genetics and Microbiology, Faculty of Science, Charles University Viničná 5 128 00 Prague 2 Czech Republic
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2
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Kozon-Markiewicz D, Kopiasz RJ, Głusiec M, Łukasiak A, Bednarczyk P, Jańczewski D. Membrane lytic activity of antibacterial ionenes, critical role of phosphatidylcholine (PC) and cardiolipin (CL). Colloids Surf B Biointerfaces 2023; 229:113480. [PMID: 37536168 DOI: 10.1016/j.colsurfb.2023.113480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/16/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023]
Abstract
Understanding the mechanism by which an antibacterial agent interacts with a model membrane provides vital information for better design of future antibiotics. In this study, we investigated two antibacterial polymers, hydrophilic C0-T-p and hydrophobic C8-T-p ionenes, known for their potent antimicrobial activity and ability to disrupt the integrity of lipid bilayers. Our hypothesize is that the composition of a lipid bilayer alters the mechanism of ionenes action, potentially providing an explanation for the observed differences in their bioactivity and selectivity. Calcein release experiments utilizing a range of liposomes to examine the impact of (i) cardiolipin (CL) to phosphatidylglycerol (PG) ratio, (ii) overall vesicle charge, and (iii) phosphatidylethanolamine (PE) to phosphatidylcholine (PC) ratio on the activity of ionenes were performed. Additionally, polymer-bilayer interactions were also investigated through vesicle fusion assay and the black lipid membrane (BLM) technique The activity of C0-T-p is strongly influenced by the amount of cardiolipin, while the activity of C8-T-p primarily depends on the overall vesicle charge. Consequently, C0-T-p acts through interactions with CL, whereas C8-T-p modifies the bulk properties of the membrane in a less-specific manner. Moreover, the presence of a small amount of PC in the membrane makes the vesicle resistant to permeabilization by tested molecules. Intriguingly, more hydrophilic C0-T-p retains higher membrane activity compared to the hydrophobic C8-T-p. However, both ionenes induce vesicle fusion and increase lipid bilayer ion permeability.
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Affiliation(s)
| | - Rafał J Kopiasz
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Martyna Głusiec
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Agnieszka Łukasiak
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Piotr Bednarczyk
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences - SGGW, Warsaw, Poland
| | - Dominik Jańczewski
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
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3
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Influence of lipid bilayer composition on the activity of antimicrobial quaternary ammonium ionenes, the interplay of intrinsic lipid curvature and polymer hydrophobicity, the role of cardiolipin. Colloids Surf B Biointerfaces 2021; 207:112016. [PMID: 34364250 DOI: 10.1016/j.colsurfb.2021.112016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 07/20/2021] [Accepted: 07/26/2021] [Indexed: 01/03/2023]
Abstract
Incorporation of hydrophobic component into amphiphilic polycations structure is frequently accompanied by an increase of antimicrobial activity. There is, however, a group of relatively hydrophilic polycations containing quaternary ammonium moieties along mainchain, ionenes, which also display strong antimicrobial and limited hemolytic properties. In this work, an influence of a hydrophobic side group length on antimicrobial mechanism of action is investigated in a series of novel amphiphilic ionenes. High antimicrobial activity was found by determination of minimum inhibitory concentration (MIC) and minimum bactericidal, and fungicidal concentration (MBC and MFC) in both growth media and a buffer. Biocompatibility was estimated by hemolytic and mammalian cells viability assays. Mechanistic studies were performed using large unilamellar vesicles (LUVs) with different lipid composition, as simplified models of cell membranes. The investigated ionenes are potent and selective antimicrobial molecules displaying a decrease of antimicrobial activity correlated with increase of hydrophobicity. Studies using LUVs revealed that the cardiolipin is an essential component responsible for the lipid bilayer permeabilization by investigated ionens. In contrast to relatively hydrophilic ionenes, more hydrophobic polymers showed an ability to stabilize membranes composed of lipids with negative spontaneous curvature in a certain range of polymer to lipid ratio. The results substantially contribute to the understanding of antimicrobial activity of the investigated class of polymers.
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4
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Mortazavian H, Foster LL, Bhat R, Patel S, Kuroda K. Decoupling the Functional Roles of Cationic and Hydrophobic Groups in the Antimicrobial and Hemolytic Activities of Methacrylate Random Copolymers. Biomacromolecules 2018; 19:4370-4378. [PMID: 30350596 PMCID: PMC6238640 DOI: 10.1021/acs.biomac.8b01256] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this study, we report the antimicrobial and hemolytic activities of ternary statistical methacrylate copolymers consisting of cationic ammonium (amino-ethyl methacrylate: AEMA), hydrophobic alkyl (ethyl methacrylate: EMA), and neutral hydroxyl (hydroxyethyl methacrylate: HEMA) side chain monomers. The cationic and hydrophobic functionalities of copolymers mimic the cationic amphiphilicity of naturally occurring antimicrobial peptides (AMPs). The HEMA monomer units were used to separately modulate the compositions of cationic and hydrophobic monomers, and we investigated the effect of each component on the antimicrobial and hemolytic activities of copolymers. Our data indicated that increasing the number of cationic groups of the copolymers to be more than 30 mol % did not increase their antimicrobial activity against Escherichia coli. The number of cationic side chains in a polymer chain at this threshold is 5.5-7.7, which is comparable to those of natural antimicrobial peptides such as maginin (+6). The MIC values of copolymers with >30 mol % of AEMA depend on only the mol % of EMA, indicating that the hydrophobic interactions of the copolymers with E. coli cell membranes determine the antimicrobial activity of copolymers. These results suggest that the roles of cationic and hydrophobic groups can be controlled independently by design in the ternary copolymers studied here.
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Affiliation(s)
- Hamid Mortazavian
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48176
| | - Leanna L. Foster
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI 48176
| | - Rajani Bhat
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48176
| | - Shyrie Patel
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48176
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48176
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI 48176
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5
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Rak M, Ochałek A, Bielecka E, Latasiewicz J, Gawarecka K, Sroka J, Czyż J, Piwowarczyk K, Masnyk M, Chmielewski M, Chojnacki T, Swiezewska E, Madeja Z. Efficient and non-toxic gene delivery by anionic lipoplexes based on polyprenyl ammonium salts and their effects on cell physiology. J Gene Med 2017; 18:331-342. [PMID: 27706881 DOI: 10.1002/jgm.2930] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 09/30/2016] [Accepted: 10/02/2016] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND One of the major challenges limiting the development of gene therapy is an absence of efficient and safe gene carriers. Among the nonviral gene delivery methods, lipofection is considered as one of the most promising. In the present study, a set of cationic polyprenyl derivatives [trimethylpolyprenylammonium iodides (PTAI)] with different lengths of polyprenyl chains (from 7, 8 and 11 to 15 isoprene units) was suggested as a component of efficient DNA vehicles. METHODS Optimization studies were conducted for PTAI in combination with co-lipid dioleoylphosphatidylethanolamine on DU145 human prostate cancer cells using: size and zeta potential measurements, confocal microscopy, the fluorescein diacetate/ethidium bromide test, cell counting, time-lapse monitoring of cell movement, gap junctional intercellular coupling analysis, antimicrobial activity assay and a red blood cell hemolysis test. RESULTS The results obtained show that the lipofecting activity of PTAI allows effective transfection of plasmid DNA complexed in negatively-charged lipoplexes of 200-500 nm size into cells without significant side effects on cell physiology (viability, proliferation, morphology, migration and gap junctional intercellular coupling). Moreover, PTAI-based vehicles exhibit a potent bactericidal activity against Staphylococcus aureus and Escherichia coli. The developed anionic lipoplexes are safe towards human red blood cell membranes, which are not disrupted in their presence. CONCLUSIONS The developed carriers constitute a group of promising lipofecting agents of a new type that can be utilized as effective lipofecting agents in vitro and they are also an encouraging basis for in vivo applications.
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Affiliation(s)
- Monika Rak
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Poland
| | - Anna Ochałek
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Poland
| | - Ewa Bielecka
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Microbiology, Poland
| | - Joanna Latasiewicz
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biophysics, Poland
| | | | - Jolanta Sroka
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Poland
| | - Jarosław Czyż
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Poland
| | - Katarzyna Piwowarczyk
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Poland
| | - Marek Masnyk
- Institute of Organic Chemistry PAS, Warsaw, Poland
| | | | | | - Ewa Swiezewska
- Institute of Biochemistry and Biophysics PAS, Warsaw, Poland
| | - Zbigniew Madeja
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biology, Poland
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6
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Takahashi H, Caputo GA, Vemparala S, Kuroda K. Synthetic Random Copolymers as a Molecular Platform To Mimic Host-Defense Antimicrobial Peptides. Bioconjug Chem 2017; 28:1340-1350. [PMID: 28379682 DOI: 10.1021/acs.bioconjchem.7b00114] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthetic polymers have been used as a molecular platform to develop host-defense antimicrobial peptide (AMP) mimetics which are effective in killing drug-resistant bacteria. In this topical review, we will discuss the AMP-mimetic design and chemical optimization strategies as well as the biological and biophysical implications of AMP mimicry by synthetic polymers. Traditionally, synthetic polymers have been used as a chemical means to replicate the chemical functionalities and physicochemical properties of AMPs (e.g., cationic charge, hydrophobicity) to recapitulate their mode of action. However, we propose a new perception that AMP-mimetic polymers are an inherently bioactive platform as whole molecules, which mimic more than the side chain functionalities of AMPs. The tunable nature and chemical simplicity of synthetic random polymers facilitate the development of potent, cost-effective, broad-spectrum antimicrobials. The polymer-based approach offers the potential for many antimicrobial applications to be used directly in solution or attached to surfaces to fight against drug-resistant bacteria.
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Affiliation(s)
- Haruko Takahashi
- Center for International Research on Integrative Biomedical Systems, Institute of Industrial Science, The University of Tokyo , Tokyo, 153-8505, Japan
| | | | - Satyavani Vemparala
- The Institute of Mathematical Sciences , C.I.T. Campus, Taramani, Chennai, 600113, India
| | - Kenichi Kuroda
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan , Ann Arbor, Michigan 48109, United States
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7
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Xie Y, Yang L. Calcium and Magnesium Ions Are Membrane-Active against Stationary-Phase Staphylococcus aureus with High Specificity. Sci Rep 2016; 6:20628. [PMID: 26865182 PMCID: PMC4749956 DOI: 10.1038/srep20628] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 01/06/2016] [Indexed: 11/09/2022] Open
Abstract
Staphylococcus aureus (S. aureus) is notorious for its ability to acquire antibiotic-resistance, and antibiotic-resistant S. aureus has become a wide-spread cause of high mortality rate. Novel antimicrobials capable of eradicating S. aureus cells including antibiotic-resistant ones are thus highly desired. Membrane-active bactericides and species-specific antimicrobials are two promising sources of novel anti-infective agents for fighting against bacterial antibiotic-resistance. We herein show that Ca2+ and Mg2+, two alkaline-earth-metal ions physiologically essential for diverse living organisms, both disrupt model S. aureus membranes and kill stationary-phase S. aureus cells, indicative of membrane-activity. In contrast to S. aureus, Escherichia coli and Bacillus subtilis exhibit unaffected survival after similar treatment with these two cations, indicative of species-specific activity against S. aureus. Moreover, neither Ca2+ nor Mg2+ lyses mouse red blood cells, indicative of hemo-compatibility. This works suggests that Ca2+ and Mg2+ may have implications in targeted eradication of S. aureus pathogen including the antibiotic-resistant ones.
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Affiliation(s)
- Yuntao Xie
- CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 China
| | - Lihua Yang
- CAS Key Laboratory of Soft Matter Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 China.,Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 China.,Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 China
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8
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Hu K, Jiang Y, Xie Y, Liu H, Liu R, Zhao Z, Lai R, Yang L. Small-Anion Selective Transmembrane "Holes" Induced by an Antimicrobial Peptide Too Short to Span Membranes. J Phys Chem B 2015; 119:8553-60. [PMID: 26126210 DOI: 10.1021/acs.jpcb.5b03133] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Whereas many membrane-destabilization modes have been suggested for membrane-spanning antimicrobial peptides (AMPs), few are available for those too short to span membrane thickness. Here we show that ORB-1, a 15-residue disulfide-bridged AMP that is only ∼20 Å long even when fully stretched like a hairpin, may act by inducing small anion-selective transmembrane "holes" of negative mean curvature. In model membranes of Gram-negative bacteria, ORB-1 induces chloride transmembrane transport and formation of transmembrane channels of negative mean curvature, whereas the inactive analogue, ORB-N, does not, suggesting a correlation between antibacterial activity and ability to induce transmembrane channels. Given that ORB-N is the C-terminus amidated form of ORB-1, our results further suggest that formation of membrane-spanning dimers may be required to initiate the observed channel induction. Moreover, ORB-1 renders model bacterial membranes permeable to anions with effective hydration diameters of <1 nm (e.g., Cl(-) and NO3(-)), but not cations of similar sizes (e.g., H3O(+)), indicative of anion-selective transmembrane channels with an effective inner diameter of ≤1 nm. In addition, negative-intrinsic-curvature (NIC) lipids such as phosphoethanolamine (PE) may facilitate the membrane-destabilization process of ORB-1. Our findings may expand current understandings on how AMPs destabilize membranes and facilitate the pharmaceutical development of ORB-1.
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Affiliation(s)
| | | | | | | | - Rui Liu
- ‡Biotoxin Units of Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
| | | | - Ren Lai
- ‡Biotoxin Units of Key Laboratory of Animal Models and Human Disease Mechanisms, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan 650223, China
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9
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Jittikoon J, Ngamsaithong N, Pimthon J, Vajragupta O. Effect of N-terminal truncation on antibacterial activity, cytotoxicity and membrane perturbation activity of Cc-CATH3. Arch Pharm Res 2015; 38:1839-49. [PMID: 25861915 DOI: 10.1007/s12272-015-0600-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 04/03/2015] [Indexed: 11/29/2022]
Abstract
A series of amino-terminal truncated analogues of quail antimicrobial peptide Cc-CATH3(1-29) were created and examined antibacterial activity against Gram-positive bacteria, cytotoxicity against mouse fibroblast cell line, and membrane perturbation activity against various membrane models. Parent peptide Cc-CATH3(1-29) and the first four-residue truncated peptide Cc-CATH3(5-29) were active in all tested experiments. In contrast, the eight- and twelve-residue truncated variants Cc-CATH3(9-29) and Cc-CATH3(13-29) appeared to have lost activities. Cc-CATH3(1-29) and Cc-CATH3(5-29) possessed antibacterial activity with minimum inhibitory concentrations of 2-4 and 1-2 µM, respectively. For cytotoxicity, Cc-CATH3(1-29) and Cc-CATH3(5-29) displayed cytotoxicity with the IC50 values of 9.33 and 4.93 μM, respectively. Cc-CATH3(5-29) induced greater liposome membranes disruption than Cc-CATH3(1-29) regardless of lipid type and composition. The leakage results of Cc-CATH3(1-29) share a similar trend with that in Cc-CATH3(5-29); they exhibit no preferential binding to anionic phospholipids. In conclusion, the results suggested that the first four residues at the N-terminus "RVRR" is not essential for presenting all test activities. In contrast, residues five to eight of "FWPL" are necessary as the exclusion of this short motif in Cc-CATH3(9-29) and Cc-CATH3(13-29) leads to a loss of activities. This study will be beneficial for further design and development of Cc-CATH3 to be novel antibiotic.
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Affiliation(s)
- Jiraphun Jittikoon
- Department of Biochemistry, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Road, Rajathevi, Bangkok, 10400, Thailand. .,Center of Excellence for Innovation in Drug Design and Discovery, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Road, Rajathevi, Bangkok, 10400, Thailand.
| | - Narumon Ngamsaithong
- Department of Biochemistry, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Road, Rajathevi, Bangkok, 10400, Thailand
| | - Jutarat Pimthon
- Center of Excellence for Innovation in Drug Design and Discovery, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Road, Rajathevi, Bangkok, 10400, Thailand.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mahidol University, Bangkok, 10400, Thailand
| | - Opa Vajragupta
- Center of Excellence for Innovation in Drug Design and Discovery, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Road, Rajathevi, Bangkok, 10400, Thailand.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Mahidol University, Bangkok, 10400, Thailand
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10
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Álvarez-Paino M, Muñoz-Bonilla A, López-Fabal F, Gómez-Garcés JL, Heuts JP, Fernández-García M. Effect of glycounits on the antimicrobial properties and toxicity behavior of polymers based on quaternized DMAEMA. Biomacromolecules 2014; 16:295-303. [DOI: 10.1021/bm5014876] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Marta Álvarez-Paino
- Instituto de Ciencia
y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Alexandra Muñoz-Bonilla
- Instituto de Ciencia
y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
- Departamento
de Química Física Aplicada, Facultad de Ciencias, Universidad Autónoma de Madrid, FranciscoTomás y Valiente
7, Cantoblanco, 28049 Madrid, Spain
| | - Fátima López-Fabal
- Hospital Universitario de Móstoles, Río Júcar, s/n, 28935 Móstoles, Madrid, Spain
| | - José L. Gómez-Garcés
- Hospital Universitario de Móstoles, Río Júcar, s/n, 28935 Móstoles, Madrid, Spain
| | - Johan P.A. Heuts
- Department
of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Marta Fernández-García
- Instituto de Ciencia
y Tecnología de Polímeros (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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11
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Yang X, Hu K, Hu G, Shi D, Jiang Y, Hui L, Zhu R, Xie Y, Yang L. Long Hydrophilic-and-Cationic Polymers: A Different Pathway toward Preferential Activity against Bacterial over Mammalian Membranes. Biomacromolecules 2014; 15:3267-77. [DOI: 10.1021/bm5006596] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Xin Yang
- CAS Key Laboratory of Soft Matter
Chemistry, ¶Department of Materials Science and
Engineering, #Department of Polymer Science and Engineering, ⊥CAS Key Laboratory of Materials
for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026 P.R. China
| | - Kan Hu
- CAS Key Laboratory of Soft Matter
Chemistry, ¶Department of Materials Science and
Engineering, #Department of Polymer Science and Engineering, ⊥CAS Key Laboratory of Materials
for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026 P.R. China
| | - Guantai Hu
- CAS Key Laboratory of Soft Matter
Chemistry, ¶Department of Materials Science and
Engineering, #Department of Polymer Science and Engineering, ⊥CAS Key Laboratory of Materials
for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026 P.R. China
| | - Danyao Shi
- CAS Key Laboratory of Soft Matter
Chemistry, ¶Department of Materials Science and
Engineering, #Department of Polymer Science and Engineering, ⊥CAS Key Laboratory of Materials
for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026 P.R. China
| | - Yunjiang Jiang
- CAS Key Laboratory of Soft Matter
Chemistry, ¶Department of Materials Science and
Engineering, #Department of Polymer Science and Engineering, ⊥CAS Key Laboratory of Materials
for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026 P.R. China
| | - Liwei Hui
- CAS Key Laboratory of Soft Matter
Chemistry, ¶Department of Materials Science and
Engineering, #Department of Polymer Science and Engineering, ⊥CAS Key Laboratory of Materials
for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026 P.R. China
| | - Rui Zhu
- CAS Key Laboratory of Soft Matter
Chemistry, ¶Department of Materials Science and
Engineering, #Department of Polymer Science and Engineering, ⊥CAS Key Laboratory of Materials
for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026 P.R. China
| | - Yuntao Xie
- CAS Key Laboratory of Soft Matter
Chemistry, ¶Department of Materials Science and
Engineering, #Department of Polymer Science and Engineering, ⊥CAS Key Laboratory of Materials
for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026 P.R. China
| | - Lihua Yang
- CAS Key Laboratory of Soft Matter
Chemistry, ¶Department of Materials Science and
Engineering, #Department of Polymer Science and Engineering, ⊥CAS Key Laboratory of Materials
for Energy Conversion, University of Science and Technology of China, Hefei, Anhui 230026 P.R. China
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12
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Hu K, Schmidt NW, Zhu R, Jiang Y, Lai GH, Wei G, Palermo EF, Kuroda K, Wong GCL, Yang L. A critical evaluation of random copolymer mimesis of homogeneous antimicrobial peptides. Macromolecules 2013; 46:1908-1915. [PMID: 23750051 PMCID: PMC3671498 DOI: 10.1021/ma302577e] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Polymeric synthetic mimics of antimicrobial peptides (SMAMPs) have recently demonstrated similar antimicrobial activity as natural antimicrobial peptides (AMPs) from innate immunity. This is surprising, since polymeric SMAMPs are heterogeneous in terms of chemical structure (random sequence) and conformation (random coil), in contrast to defined amino acid sequence and intrinsic secondary structure. To understand this better, we compare AMPs with a 'minimal' mimic, a well characterized family of polydisperse cationic methacrylate-based random copolymer SMAMPs. Specifically, we focus on a comparison between the quantifiable membrane curvature generating capacity, charge density, and hydrophobicity of the polymeric SMAMPs and AMPs. Synchrotron small angle x-ray scattering (SAXS) results indicate that typical AMPs and these methacrylate SMAMPs generate similar amounts of membrane negative Gaussian curvature (NGC), which is topologically necessary for a variety of membrane-destabilizing processes. Moreover, the curvature generating ability of SMAMPs is more tolerant of changes in the lipid composition than that of natural AMPs with similar chemical groups, consistent with the lower specificity of SMAMPs. We find that, although the amount of NGC generated by these SMAMPs and AMPs are similar, the SMAMPs require significantly higher levels of hydrophobicity and cationic charge to achieve the same level of membrane deformation. We propose an explanation for these differences, which has implications for new synthetic strategies aimed at improved mimesis of AMPs.
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Affiliation(s)
- Kan Hu
- CAS Key Laboratory of Soft Matter Chemistry, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 China
| | - Nathan W. Schmidt
- Department of Bioengineering, University of California at Los Angeles, Los Angeles, CA 90095 United States
| | - Rui Zhu
- CAS Key Laboratory of Soft Matter Chemistry, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 China
| | - Yunjiang Jiang
- CAS Key Laboratory of Soft Matter Chemistry, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 China
| | - Ghee Hwee Lai
- Department of Bioengineering, University of California at Los Angeles, Los Angeles, CA 90095 United States
| | - Gang Wei
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610064 China
| | - Edmund F. Palermo
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI 48109 United States
| | - Kenichi Kuroda
- Macromolecular Science and Engineering Center, University of Michigan, Ann Arbor, MI 48109 United States
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI 48109 United States
| | - Gerard C. L. Wong
- Department of Bioengineering, University of California at Los Angeles, Los Angeles, CA 90095 United States
| | - Lihua Yang
- CAS Key Laboratory of Soft Matter Chemistry, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 China
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610064 China
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