1
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Bassani CL, van Anders G, Banin U, Baranov D, Chen Q, Dijkstra M, Dimitriyev MS, Efrati E, Faraudo J, Gang O, Gaston N, Golestanian R, Guerrero-Garcia GI, Gruenwald M, Haji-Akbari A, Ibáñez M, Karg M, Kraus T, Lee B, Van Lehn RC, Macfarlane RJ, Mognetti BM, Nikoubashman A, Osat S, Prezhdo OV, Rotskoff GM, Saiz L, Shi AC, Skrabalak S, Smalyukh II, Tagliazucchi M, Talapin DV, Tkachenko AV, Tretiak S, Vaknin D, Widmer-Cooper A, Wong GCL, Ye X, Zhou S, Rabani E, Engel M, Travesset A. Nanocrystal Assemblies: Current Advances and Open Problems. ACS NANO 2024; 18:14791-14840. [PMID: 38814908 DOI: 10.1021/acsnano.3c10201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
We explore the potential of nanocrystals (a term used equivalently to nanoparticles) as building blocks for nanomaterials, and the current advances and open challenges for fundamental science developments and applications. Nanocrystal assemblies are inherently multiscale, and the generation of revolutionary material properties requires a precise understanding of the relationship between structure and function, the former being determined by classical effects and the latter often by quantum effects. With an emphasis on theory and computation, we discuss challenges that hamper current assembly strategies and to what extent nanocrystal assemblies represent thermodynamic equilibrium or kinetically trapped metastable states. We also examine dynamic effects and optimization of assembly protocols. Finally, we discuss promising material functions and examples of their realization with nanocrystal assemblies.
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Affiliation(s)
- Carlos L Bassani
- Institute for Multiscale Simulation, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Greg van Anders
- Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Uri Banin
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Dmitry Baranov
- Division of Chemical Physics, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - Qian Chen
- University of Illinois, Urbana, Illinois 61801, USA
| | - Marjolein Dijkstra
- Soft Condensed Matter & Biophysics, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CC Utrecht, The Netherlands
| | - Michael S Dimitriyev
- Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, USA
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, USA
| | - Efi Efrati
- Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel
- James Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA
| | - Jordi Faraudo
- Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, E-08193 Bellaterra, Barcelona, Spain
| | - Oleg Gang
- Department of Chemical Engineering, Columbia University, New York, New York 10027, USA
- Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Nicola Gaston
- The MacDiarmid Institute for Advanced Materials and Nanotechnology, Department of Physics, The University of Auckland, Auckland 1142, New Zealand
| | - Ramin Golestanian
- Max Planck Institute for Dynamics and Self-Organization (MPI-DS), 37077 Göttingen, Germany
- Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford OX1 3PU, UK
| | - G Ivan Guerrero-Garcia
- Facultad de Ciencias de la Universidad Autónoma de San Luis Potosí, 78295 San Luis Potosí, México
| | - Michael Gruenwald
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, USA
| | - Amir Haji-Akbari
- Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06511, USA
| | - Maria Ibáñez
- Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria
| | - Matthias Karg
- Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Tobias Kraus
- INM - Leibniz-Institute for New Materials, 66123 Saarbrücken, Germany
- Saarland University, Colloid and Interface Chemistry, 66123 Saarbrücken, Germany
| | - Byeongdu Lee
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Reid C Van Lehn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53717, USA
| | - Robert J Macfarlane
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, USA
| | - Bortolo M Mognetti
- Center for Nonlinear Phenomena and Complex Systems, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - Arash Nikoubashman
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden, Germany
- Institut für Theoretische Physik, Technische Universität Dresden, 01069 Dresden, Germany
| | - Saeed Osat
- Max Planck Institute for Dynamics and Self-Organization (MPI-DS), 37077 Göttingen, Germany
| | - Oleg V Prezhdo
- Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA
- Department of Physics and Astronomy, University of Southern California, Los Angeles, California 90089, USA
| | - Grant M Rotskoff
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
| | - Leonor Saiz
- Department of Biomedical Engineering, University of California, Davis, California 95616, USA
| | - An-Chang Shi
- Department of Physics & Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada
| | - Sara Skrabalak
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
| | - Ivan I Smalyukh
- Department of Physics and Chemical Physics Program, University of Colorado, Boulder, Colorado 80309, USA
- International Institute for Sustainability with Knotted Chiral Meta Matter, Hiroshima University, Higashi-Hiroshima City 739-0046, Japan
| | - Mario Tagliazucchi
- Universidad de Buenos Aires, Ciudad Universitaria, C1428EHA Ciudad Autónoma de Buenos Aires, Buenos Aires 1428 Argentina
| | - Dmitri V Talapin
- Department of Chemistry, James Franck Institute and Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, USA
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Alexei V Tkachenko
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Sergei Tretiak
- Theoretical Division and Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - David Vaknin
- Iowa State University and Ames Lab, Ames, Iowa 50011, USA
| | - Asaph Widmer-Cooper
- ARC Centre of Excellence in Exciton Science, School of Chemistry, University of Sydney, Sydney, New South Wales 2006, Australia
- The University of Sydney Nano Institute, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Gerard C L Wong
- Department of Bioengineering, University of California, Los Angeles, California 90095, USA
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA 90095, USA
- California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA
| | - Xingchen Ye
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, USA
| | - Shan Zhou
- Department of Nanoscience and Biomedical Engineering, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, USA
| | - Eran Rabani
- Department of Chemistry, University of California and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- The Raymond and Beverly Sackler Center of Computational Molecular and Materials Science, Tel Aviv University, Tel Aviv 69978, Israel
| | - Michael Engel
- Institute for Multiscale Simulation, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Alex Travesset
- Iowa State University and Ames Lab, Ames, Iowa 50011, USA
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2
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Zielke C, Nielsen JE, Lin JS, Barron AE. Between good and evil: Complexation of the human cathelicidin LL-37 with nucleic acids. Biophys J 2024; 123:1316-1328. [PMID: 37919905 PMCID: PMC11163296 DOI: 10.1016/j.bpj.2023.10.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/23/2023] [Accepted: 10/31/2023] [Indexed: 11/04/2023] Open
Abstract
The innate immune system provides a crucial first line of defense against invading pathogens attacking the body. As the only member of the human cathelicidin family, the antimicrobial peptide LL-37 has been shown to have antiviral, antifungal, and antibacterial properties. In complexation with nucleic acids, LL-37 is suggested to maintain its beneficial health effects while also acting as a condensation agent for the nucleic acid. Complexes formed by LL-37 and nucleic acids have been shown to be immunostimulatory with a positive impact on the human innate immune system. However, some studies also suggest that in some circumstances, LL-37/nucleic acid complexes may be a contributing factor to autoimmune disorders such as psoriasis and systemic lupus erythematosus. This review provides a comprehensive discussion of research highlighting the beneficial health effects of LL-37/nucleic acid complexes, as well as discussing observed detrimental effects. We will emphasize why it is important to investigate and elucidate structural characteristics, such as condensation patterns of nucleic acids within complexation, and their mechanisms of action, to shed light on the intricate physiological effects of LL-37 and the seemingly contradictory role of LL-37/nucleic acid complexes in the innate immune response.
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Affiliation(s)
- Claudia Zielke
- Department of Bioengineering, Stanford University, Schools of Medicine and of Engineering, Stanford, California
| | - Josefine Eilsø Nielsen
- Department of Bioengineering, Stanford University, Schools of Medicine and of Engineering, Stanford, California; Department of Science and Environment, Roskilde University, Roskilde, Denmark
| | - Jennifer S Lin
- Department of Bioengineering, Stanford University, Schools of Medicine and of Engineering, Stanford, California
| | - Annelise E Barron
- Department of Bioengineering, Stanford University, Schools of Medicine and of Engineering, Stanford, California.
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3
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Wang Y, Zhang Y, Su R, Wang Y, Qi W. Antimicrobial therapy based on self-assembling peptides. J Mater Chem B 2024; 12:5061-5075. [PMID: 38726712 DOI: 10.1039/d4tb00260a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
The emergence of drug-resistant microorganisms has threatened global health, and microbial infections have severely limited the use of medical materials. For example, the attachment and colonization of pathogenic bacteria to medical implant materials can lead to wound infections, inflammation and complications, as well as implant failure, shortening their lifespan and even resulting in patient death. In the era of antibiotic resistance, antimicrobial drug discovery needs to prioritize unconventional therapies that act on new targets or adopt new mechanisms. In this regard, supramolecular antimicrobial peptides have emerged as attractive therapeutic platforms, both as bactericides for combination antibiotics and as delivery vehicles. By taking advantage of their programmable intermolecular and intramolecular interactions, peptides can be modified to form higher-order structures (including nanofibers and nanoparticles) with unique functionality. This paper begins with an analysis of the relationship between peptide self-assembly and antimicrobial activity, describes in detail the research and development of various self-assembled antimicrobial peptides in recent years, and finally explores different combinatorial strategies for self-assembling antimicrobial peptides.
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Affiliation(s)
- Yuqi Wang
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
| | - Yexi Zhang
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
| | - Rongxin Su
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Yuefei Wang
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Wei Qi
- Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China.
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University, Tianjin 300072, P. R. China
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4
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Zhou M, Liu L, Cong Z, Jiang W, Xiao X, Xie J, Luo Z, Chen S, Wu Y, Xue X, Shao N, Liu R. A dual-targeting antifungal is effective against multidrug-resistant human fungal pathogens. Nat Microbiol 2024; 9:1325-1339. [PMID: 38589468 DOI: 10.1038/s41564-024-01662-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 03/04/2024] [Indexed: 04/10/2024]
Abstract
Drug-resistant fungal infections pose a significant threat to human health. Dual-targeting compounds, which have multiple targets on a single pathogen, offer an effective approach to combat drug-resistant pathogens, although ensuring potent activity and high selectivity remains a challenge. Here we propose a dual-targeting strategy for designing antifungal compounds. We incorporate DNA-binding naphthalene groups as the hydrophobic moieties into the host defence peptide-mimicking poly(2-oxazoline)s. This resulted in a compound, (Gly0.8Nap0.2)20, which targets both the fungal membrane and DNA. This compound kills clinical strains of multidrug-resistant fungi including Candida spp., Cryptococcus neoformans, Cryptococcus gattii and Aspergillus fumigatus. (Gly0.8Nap0.2)20 shows superior performance compared with amphotericin B by showing not only potent antifungal activities but also high antifungal selectivity. The compound also does not induce antimicrobial resistance. Moreover, (Gly0.8Nap0.2)20 exhibits promising in vivo therapeutic activities against drug-resistant Candida albicans in mouse models of skin abrasion, corneal infection and systemic infection. This study shows that dual-targeting antifungal compounds may be effective in combating drug-resistant fungal pathogens and mitigating fungal resistance.
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Affiliation(s)
- Min Zhou
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Longqiang Liu
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Zihao Cong
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Weinan Jiang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Ximian Xiao
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Jiayang Xie
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Zhengjie Luo
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Sheng Chen
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Yueming Wu
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Xinying Xue
- Department of Respiratory and Critical Care, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- School of Clinical Medicine, Shandong Second Medical University, Weifang, China
| | - Ning Shao
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China.
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China.
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5
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Zhang Y, Bharathi V, Dokoshi T, de Anda J, Ursery LT, Kulkarni NN, Nakamura Y, Chen J, Luo EWC, Wang L, Xu H, Coady A, Zurich R, Lee MW, Matsui T, Lee H, Chan LC, Schepmoes AA, Lipton MS, Zhao R, Adkins JN, Clair GC, Thurlow LR, Schisler JC, Wolfgang MC, Hagan RS, Yeaman MR, Weiss TM, Chen X, Li MMH, Nizet V, Antoniak S, Mackman N, Gallo RL, Wong GCL. Viral afterlife: SARS-CoV-2 as a reservoir of immunomimetic peptides that reassemble into proinflammatory supramolecular complexes. Proc Natl Acad Sci U S A 2024; 121:e2300644120. [PMID: 38306481 PMCID: PMC10861912 DOI: 10.1073/pnas.2300644120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 10/28/2023] [Indexed: 02/04/2024] Open
Abstract
It is unclear how severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection leads to the strong but ineffective inflammatory response that characterizes severe Coronavirus disease 2019 (COVID-19), with amplified immune activation in diverse cell types, including cells without angiotensin-converting enzyme 2 receptors necessary for infection. Proteolytic degradation of SARS-CoV-2 virions is a milestone in host viral clearance, but the impact of remnant viral peptide fragments from high viral loads is not known. Here, we examine the inflammatory capacity of fragmented viral components from the perspective of supramolecular self-organization in the infected host environment. Interestingly, a machine learning analysis to SARS-CoV-2 proteome reveals sequence motifs that mimic host antimicrobial peptides (xenoAMPs), especially highly cationic human cathelicidin LL-37 capable of augmenting inflammation. Such xenoAMPs are strongly enriched in SARS-CoV-2 relative to low-pathogenicity coronaviruses. Moreover, xenoAMPs from SARS-CoV-2 but not low-pathogenicity homologs assemble double-stranded RNA (dsRNA) into nanocrystalline complexes with lattice constants commensurate with the steric size of Toll-like receptor (TLR)-3 and therefore capable of multivalent binding. Such complexes amplify cytokine secretion in diverse uninfected cell types in culture (epithelial cells, endothelial cells, keratinocytes, monocytes, and macrophages), similar to cathelicidin's role in rheumatoid arthritis and lupus. The induced transcriptome matches well with the global gene expression pattern in COVID-19, despite using <0.3% of the viral proteome. Delivery of these complexes to uninfected mice boosts plasma interleukin-6 and CXCL1 levels as observed in COVID-19 patients.
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Affiliation(s)
- Yue Zhang
- Department of Bioengineering, University of California, Los Angeles, CA90095
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA9009
- California NanoSystems Institute, University of California, Los Angeles, CA90095
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA90095
- Biomedical Engineering, School of Engineering, Westlake University, Hangzhou, Zhejiang310012, China
| | - Vanthana Bharathi
- University of North Carolina Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
| | - Tatsuya Dokoshi
- Department of Dermatology, University of California San Diego, La Jolla, CA92093
| | - Jaime de Anda
- Department of Bioengineering, University of California, Los Angeles, CA90095
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA9009
- California NanoSystems Institute, University of California, Los Angeles, CA90095
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA90095
| | - Lauryn Tumey Ursery
- University of North Carolina Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
| | - Nikhil N. Kulkarni
- Department of Dermatology, University of California San Diego, La Jolla, CA92093
| | - Yoshiyuki Nakamura
- Department of Dermatology, University of California San Diego, La Jolla, CA92093
| | - Jonathan Chen
- Department of Bioengineering, University of California, Los Angeles, CA90095
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA9009
- California NanoSystems Institute, University of California, Los Angeles, CA90095
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA90095
| | - Elizabeth W. C. Luo
- Department of Bioengineering, University of California, Los Angeles, CA90095
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA9009
- California NanoSystems Institute, University of California, Los Angeles, CA90095
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA90095
| | - Lamei Wang
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA02215
| | - Hua Xu
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA02215
| | - Alison Coady
- Department of Pediatrics, School of Medicine, University of California San Diego, La Jolla, CA92093
| | - Raymond Zurich
- Department of Pediatrics, School of Medicine, University of California San Diego, La Jolla, CA92093
| | - Michelle W. Lee
- Department of Bioengineering, University of California, Los Angeles, CA90095
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA9009
- California NanoSystems Institute, University of California, Los Angeles, CA90095
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA90095
| | - Tsutomu Matsui
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, CA94025
| | - HongKyu Lee
- Division of Molecular Medicine, Harbor-University of California Los Angeles Medical Center, Los Angeles County, Torrance, CA90502
| | - Liana C. Chan
- Division of Molecular Medicine, Harbor-University of California Los Angeles Medical Center, Los Angeles County, Torrance, CA90502
- Division of Infectious Diseases, Harbor-University of California Los Angeles Medical Center, Los Angeles County, Torrance, CA90502
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Institute for Infection & Immunity, Lundquist Institute for Biomedical Innovation, Harbor-University of California Los Angeles Medical Center, Torrance, CA90502
| | - Athena A. Schepmoes
- Environmental Molecular Science Division, Pacific Northwest National Laboratory, Richland, WA99354
| | - Mary S. Lipton
- Environmental Molecular Science Division, Pacific Northwest National Laboratory, Richland, WA99354
| | - Rui Zhao
- Environmental Molecular Science Division, Pacific Northwest National Laboratory, Richland, WA99354
| | - Joshua N. Adkins
- Biological Science Division, Pacific Northwest National Laboratory, Richland, WA99354
| | - Geremy C. Clair
- Biological Science Division, Pacific Northwest National Laboratory, Richland, WA99354
| | - Lance R. Thurlow
- Division of Oral and Craniofacial Health Sciences, Adams School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
| | - Jonathan C. Schisler
- McAllister Heart Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
- Computational Medicine Program, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
| | - Matthew C. Wolfgang
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
| | - Robert S. Hagan
- Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
- Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
| | - Michael R. Yeaman
- Division of Molecular Medicine, Harbor-University of California Los Angeles Medical Center, Los Angeles County, Torrance, CA90502
- Division of Infectious Diseases, Harbor-University of California Los Angeles Medical Center, Los Angeles County, Torrance, CA90502
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA90095
- Institute for Infection & Immunity, Lundquist Institute for Biomedical Innovation, Harbor-University of California Los Angeles Medical Center, Torrance, CA90502
| | - Thomas M. Weiss
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Stanford University, Menlo Park, CA94025
| | - Xinhua Chen
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA02215
| | - Melody M. H. Li
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA90095
| | - Victor Nizet
- Department of Pediatrics, School of Medicine, University of California San Diego, La Jolla, CA92093
| | - Silvio Antoniak
- Department of Pathology and Laboratory Medicine, University of North Carolina Blood Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
| | - Nigel Mackman
- University of North Carolina Blood Research Center, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC27599
| | - Richard L. Gallo
- Department of Dermatology, University of California San Diego, La Jolla, CA92093
| | - Gerard C. L. Wong
- Department of Bioengineering, University of California, Los Angeles, CA90095
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA9009
- California NanoSystems Institute, University of California, Los Angeles, CA90095
- Department of Microbiology, Immunology & Molecular Genetics, University of California, Los Angeles, CA90095
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6
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Chen Z, Li Z, Huang H, Shen G, Ren Y, Mao X, Wang L, Li Z, Wang W, Li G, Zhao B, Guo W, Hu Y. Cancer Immunotherapy Based on Cell Membrane-Coated Nanocomposites Augmenting cGAS/STING Activation by Efferocytosis Blockade. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302758. [PMID: 37381095 DOI: 10.1002/smll.202302758] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 06/07/2023] [Indexed: 06/30/2023]
Abstract
Innate immunity triggered by the cGAS/STING pathway has the potential to improve cancer immunotherapy. Previously, the authors reported that double-stranded DNA (dsDNA) released by dying tumor cells can trigger the cGAS/STING pathway. However, owing to efferocytosis, dying tumor cells are engulfed and cleared before the damaged dsDNA is released; hence, immunologic tolerance and immune escape occur. Herein, a cancer-cell-membrane biomimetic nanocomposites that exhibit tumor-immunotherapeutic effects are synthesized by augmenting the cGAS/STING pathway and suppressing efferocytosis. Once internalized by cancer cells, a combined chemo/chemodynamic therapy would be triggered, which damages their nuclear and mitochondrial DNA. Furthermore, the releasing Annexin A5 protein could inhibit efferocytosis effect and promote immunostimulatory secondary necrosis by preventing phosphatidylserine exposure, resulting in the burst release of dsDNA. These dsDNA fragments, as molecular patterns to immunogenic damage, escape from the cancer cells, activate the cGAS/STING pathway, enhance cross-presentation inside dendritic cells, and promote M1-polarization of tumor-associated macrophages. In vivo experiments suggest that the proposed nanocomposite could recruit cytotoxic T-cells and facilitate long-term immunological memory. Moreover, when combined with immune-checkpoint blockades, it could augment the immune response. Therefore, this novel biomimetic nanocomposite is a promising strategy for generating adaptive antitumor immune responses.
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Affiliation(s)
- Zhian Chen
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Zhenhao Li
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Huilin Huang
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Guodong Shen
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Yingxin Ren
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Xinyuan Mao
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Lingzhi Wang
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Zhenyuan Li
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Weisheng Wang
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Guoxin Li
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Bingxia Zhao
- Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, P. R. China
- Experiment Education/Administration Center, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Weihong Guo
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
| | - Yanfeng Hu
- Department of General Surgery, Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, 510515, P. R. China
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7
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Mitra A, Paul S. Pathways of hLL-37 17-29 Aggregation Give Insight into the Mechanism of α-Amyloid Formation. J Phys Chem B 2023; 127:8162-8175. [PMID: 37707359 DOI: 10.1021/acs.jpcb.3c04742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2023]
Abstract
α-amyloids present a novel self-assembly principle that can be utilized to prepare functional biomaterials. Evidence of α-amyloid formation in the active core of the human LL-37 protein (comprising residues 17 to 29) was associated with this peptide's membranolytic property. Though mechanistic pathways of β-amyloid formation are known, such studies are scarce in α-amyloids. Modern computational techniques allow such mechanistic studies in molecular detail. Here, we propose aggregation pathways in hLL-3717-29 through molecular dynamics simulations. We first identified oligomers among peptides based on a distance criterion. The distribution of oligomers was then used to build Markov state models from which pathways were obtained using the framework of transition path theory. We checked the structural stability of the peptides during oligomerization, which is crucial from their functional point of view. We also investigated the key residues that participate in oligomer formation, the interactions between them, and the effect of residue mutations on the binding free energy of the peptides. Our findings suggest that larger oligomers are produced from the association of smaller and intermediate oligomers. The peptides retain their helical structure during aggregation with transient occurrences of 3-10 helix and turns. Hydrophobic interactions are vital in the aggregation of these peptides with Ile24 playing a crucial role. Mutation of this residue to alanine decreases the peptides' binding free energy, resulting in reduced aggregation tendency.
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Affiliation(s)
- Aritra Mitra
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India
| | - Sandip Paul
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam 781039, India
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8
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Jackson Hoffman BA, Pumford EA, Enueme AI, Fetah KL, Friedl OM, Kasko AM. Engineered macromolecular Toll-like receptor agents and assemblies. Trends Biotechnol 2023; 41:1139-1154. [PMID: 37068999 DOI: 10.1016/j.tibtech.2023.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/06/2023] [Accepted: 03/13/2023] [Indexed: 04/19/2023]
Abstract
Macromolecular Toll-like receptor (TLR) agents have been utilized as agonists and inhibitors in preclinical and clinical settings. These agents interface with the TLR class of innate immune receptors which recognize macromolecular ligands that are characteristic of pathogenic material. As such, many agents that have been historically investigated are derived from the natural macromolecules which activate or inhibit TLRs. This review covers recent research and clinically available TLR agents that are macromolecular or polymeric. Synthetic materials that have been found to interface with TLRs are also discussed. Assemblies of these materials are investigated in the context of improving stability or efficacy of ligands. Attention is given to strategies which modify or enhance the current agents and to future outlooks on the development of these agents.
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Affiliation(s)
| | - Elizabeth A Pumford
- Department of Bioengineering, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Amaka I Enueme
- Department of Bioengineering, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Kirsten L Fetah
- Department of Bioengineering, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Olivia M Friedl
- Department of Bioengineering, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Andrea M Kasko
- Department of Bioengineering, University of California Los Angeles, Los Angeles, CA 90095, USA; California Nanosystems Institute, University of California, Los Angeles, CA 90095, USA.
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9
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Webb KR, Hess KA, Shmidt A, Segner KD, Buchanan LE. Probing local changes to α-helical structures with 2D IR spectroscopy and isotope labeling. Biophys J 2023; 122:1491-1502. [PMID: 36906800 PMCID: PMC10147839 DOI: 10.1016/j.bpj.2023.03.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 10/13/2022] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
α-Helical secondary structures impart specific mechanical and physiochemical properties to peptides and proteins, enabling them to perform a vast array of molecular tasks ranging from membrane insertion to molecular allostery. Loss of α-helical content in specific regions can inhibit native protein function or induce new, potentially toxic, biological activities. Thus, identifying specific residues that exhibit loss or gain of helicity is critical for understanding the molecular basis of function. Two-dimensional infrared (2D IR) spectroscopy coupled with isotope labeling is capable of capturing detailed structural changes in polypeptides. Yet, questions remain regarding the inherent sensitivity of isotope-labeled modes to local changes in α-helicity, such as terminal fraying; the origin of spectral shifts (hydrogen-bonding versus vibrational coupling); and the ability to definitively detect coupled isotopic signals in the presence of overlapping side chains. Here, we address each of these points individually by characterizing a short, model α-helix (DPAEAAKAAAGR-NH2) with 2D IR and isotope labeling. These results demonstrate that pairs of 13C18O probes placed three residues apart can detect subtle structural changes and variations along the length of the model peptide as the α-helicity is systematically tuned. Comparison of singly and doubly labeled peptides affirm that frequency shifts arise primarily from hydrogen-bonding, while vibrational coupling between paired isotopes leads to increased peak areas that can be clearly differentiated from underlying side-chain modes or uncoupled isotope labels not participating in helical structures. These results demonstrate that 2D IR in tandem with i,i+3 isotope-labeling schemes can capture residue-specific molecular interactions within a single turn of an α-helix.
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Affiliation(s)
| | - Kayla Anne Hess
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee
| | - Alisa Shmidt
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee
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10
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Kato H, Ohta K, Akagi M, Fukada S, Sakuma M, Naruse T, Nishi H, Shigeishi H, Takechi M, Aikawa T. LL-37-dsRNA Complexes Modulate Immune Response via RIG-I in Oral Keratinocytes. Inflammation 2023; 46:808-823. [PMID: 36763254 DOI: 10.1007/s10753-023-01787-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/24/2023] [Accepted: 01/30/2023] [Indexed: 02/11/2023]
Abstract
Recognition of nucleic acids as pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs) promotes an inflammatory response. On the other hand, LL-37, an antimicrobial peptide, is a multifunctional modulator of immune response, though whether it modulates inflammatory responses induced by nucleic acids in oral keratinocytes is unknown. In this study, we firstly investigated the effect of LL-37 on CXCL10 induced by DAMPs and PAMPs in immortalized oral keratinocytes, RT7. Furthermore, the effects of LL-37 on translocation of exogenous nucleic acids into cytoplasm as well as cytosolic receptor, RIG-I on immune responses mediated by LL-37-nucleic acid complexes were examined. From these results, LL-37 enhanced necrotic cell supernatant (NCS)-induced CXCL10 expression in RT7, while the response was decreased by RNase. Complexes of LL-37 and double-stranded (ds) RNA, Poly(I:C) enhanced CXCL10 expression in comparison with each alone, which were associated with NF-κB activation. Furthermore, LL-37 was shown to bind with ds nucleotides and translocate into cytoplasm. Knockdown of RIG-I decreased expression of CXCL10 induced by LL-37-Poly(I:C) complexes, and RIG-I were co-localized with Poly(I:C) entered by LL-37 in cytoplasm. LL-37 modulates dsRNA-mediated inflammatory response via RIG-I in oral keratinocytes, which may play an important role in the pathogenesis of oral inflammatory diseases.
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Affiliation(s)
- Hiroki Kato
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
- Department of Dentistry, Oral and Maxillofacial Surgery, National Hospital Organization Kure Medical Centerand, Chugoku Cancer Center , 3-1 Aoyama-Cho, Kure, 737-0023, Japan
| | - Kouji Ohta
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.
| | - Misaki Akagi
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
| | - Shohei Fukada
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
| | - Miyuki Sakuma
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
| | - Takako Naruse
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
| | - Hiromi Nishi
- Department of General Dentistry, Hiroshima University Hospital, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
| | - Hideo Shigeishi
- Department of Public Oral Health, Program of Oral Health Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
| | - Masaaki Takechi
- Department of Dentistry, Oral and Maxillofacial Surgery, National Hospital Organization Kure Medical Centerand, Chugoku Cancer Center , 3-1 Aoyama-Cho, Kure, 737-0023, Japan
| | - Tomonao Aikawa
- Department of Oral and Maxillofacial Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan
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11
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A Review on the Synthesis of Polypeptoids. Catalysts 2023. [DOI: 10.3390/catal13020280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Polyeptoids are a promising class of polypeptide mimetic biopolymers based on N-substituted glycine backbones. Because of the high designability of their side chains, polypeptoids have a wide range of applications in surface antifouling, biosensing, drug delivery, and stimuli-responsive materials. To better control the structures and properties of polypeptoids, it is necessary to understand different methods for polypeptoid synthesis. This review paper summarized and discussed the main synthesis methods of polypeptoids: the solid-phase submonomer synthesis method, ring-opening polymerization method and Ugi reaction method.
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12
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Nicastro LK, de Anda J, Jain N, Grando KCM, Miller AL, Bessho S, Gallucci S, Wong GCL, Tükel Ç. Assembly of ordered DNA-curli fibril complexes during Salmonella biofilm formation correlates with strengths of the type I interferon and autoimmune responses. PLoS Pathog 2022; 18:e1010742. [PMID: 35972973 PMCID: PMC9380926 DOI: 10.1371/journal.ppat.1010742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 07/14/2022] [Indexed: 11/23/2022] Open
Abstract
Deposition of human amyloids is associated with complex human diseases such as Alzheimer's and Parkinson's. Amyloid proteins are also produced by bacteria. The bacterial amyloid curli, found in the extracellular matrix of both commensal and pathogenic enteric bacterial biofilms, forms complexes with extracellular DNA, and recognition of these complexes by the host immune system may initiate an autoimmune response. Here, we isolated early intermediate, intermediate, and mature curli fibrils that form throughout the biofilm development and investigated the structural and pathogenic properties of each. Early intermediate aggregates were smaller than intermediate and mature curli fibrils, and circular dichroism, tryptophan, and thioflavin T analyses confirmed the establishment of a beta-sheet secondary structure as the curli conformations matured. Intermediate and mature curli fibrils were more immune stimulatory than early intermediate fibrils in vitro. The intermediate curli was cytotoxic to macrophages independent of Toll-like receptor 2. Mature curli fibrils had the highest DNA content and induced the highest levels of Isg15 expression and TNFα production in macrophages. In mice, mature curli fibrils induced the highest levels of anti-double-stranded DNA autoantibodies. The levels of autoantibodies were higher in autoimmune-prone NZBWxF/1 mice than wild-type C57BL/6 mice. Chronic exposure to all curli forms led to significant histopathological changes and synovial proliferation in the joints of autoimmune-prone mice; mature curli was the most detrimental. In conclusion, curli fibrils, generated during biofilm formation, cause pathogenic autoimmune responses that are stronger when curli complexes contain higher levels of DNA and in mice predisposed to autoimmunity.
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Affiliation(s)
- Lauren K. Nicastro
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Jaime de Anda
- Department of Bioengineering, California Nano Systems Institute, University of California, Los Angeles, California, United States of America
| | - Neha Jain
- Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur, India
| | - Kaitlyn C. M. Grando
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Amanda L. Miller
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Shingo Bessho
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Stefania Gallucci
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Gerard C. L. Wong
- Department of Bioengineering, California Nano Systems Institute, University of California, Los Angeles, California, United States of America
| | - Çagla Tükel
- Center for Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania, United States of America
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13
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Amyloid-containing biofilms and autoimmunity. Curr Opin Struct Biol 2022; 75:102435. [PMID: 35863164 PMCID: PMC9847210 DOI: 10.1016/j.sbi.2022.102435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 06/08/2022] [Accepted: 06/20/2022] [Indexed: 01/21/2023]
Abstract
Bacteria are microscopic, single-celled organisms known for their ability to adapt to their environment. In response to stressful environmental conditions or in the presence of a contact surface, they commonly form multicellular aggregates called biofilms. Biofilms form on various abiotic or biotic surfaces through a dynamic stepwise process involving adhesion, growth, and extracellular matrix production. Biofilms develop on tissues as well as on implanted devices during infections, providing the bacteria with a mechanism for survival under harsh conditions including targeting by the immune system and antimicrobial therapy. Like pathogenic bacteria, members of the human microbiota can form biofilms. Biofilms formed by enteric bacteria contribute to several human diseases including autoimmune diseases and cancer. However, until recently the interactions of immune cells with biofilms had been mostly uncharacterized. Here, we will discuss how components of the enteric biofilm produced in vivo, specifically amyloid curli and extracellular DNA, could be interacting with the host's immune system causing an unpredicted immune response.
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14
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Zhang W, Deng S, Zhou M, Zou J, Xie J, Xiao X, Yuan L, Ji Z, Chen S, Cui R, Luo Z, Xia G, Liu R. Host defense peptide mimicking cyclic peptoid polymers exerting strong activity against drug-resistant bacteria. Biomater Sci 2022; 10:4515-4524. [PMID: 35788576 DOI: 10.1039/d2bm00587e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Extensive use of antibiotics accelerates the emergence of drug-resistant bacteria and related infections. Host defense peptides (HDPs) have been studied as promising and potential therapeutic candidates. However, their clinical applications of HDPs are limited due to their high cost of synthesis and low stability upon proteolysis. Therefore, HDP mimics have become a new approach to address the challenge of bacterial resistance. In this work, we design the amphiphilic peptoid polymers by mimicking the positively charged and hydrophobic structures of HDPs and synthesize a series of cyclic peptoid polymers efficiently via the polymerization on α-amino acid N-substituted glycine N-carboxyanhydrides (α-NNCAs) using 1,8-diazabicycloundec-7-ene (DBU) as the initiator. The optimal cyclic peptoid polymer, poly(Naeg0.7Npfbg0.3)20, displays strong antibacterial activities against drug-resistant bacteria, but low hemolysis and cytotoxicity. In addition, the mode-of-action study indicates that the antibacterial mechanism is associated with bacterial membrane interaction. Our study implies that HDP mimicking cyclic peptoid polymers have potential application in treating drug-resistant bacterial infections.
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Affiliation(s)
- Wenjing Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Shuai Deng
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Min Zhou
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Jingcheng Zou
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jiayang Xie
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ximian Xiao
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ling Yuan
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhemin Ji
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Sheng Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ruxin Cui
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhengjie Luo
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Guixue Xia
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China. .,Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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15
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Du Y, Ah Kioon MD, Laurent P, Chaudhary V, Pierides M, Yang C, Oliver D, Ivashkiv LB, Barrat FJ. Chemokines form nanoparticles with DNA and can superinduce TLR-driven immune inflammation. J Exp Med 2022; 219:213252. [PMID: 35640018 DOI: 10.1084/jem.20212142] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 03/24/2022] [Accepted: 05/12/2022] [Indexed: 12/13/2022] Open
Abstract
Chemokines control the migratory patterns and positioning of immune cells to organize immune responses to pathogens. However, many chemokines have been associated with systemic autoimmune diseases that have chronic IFN signatures. We report that a series of chemokines, including CXCL4, CXCL10, CXCL12, and CCL5, can superinduce type I IFN (IFN-I) by TLR9-activated plasmacytoid DCs (pDCs), independently of their respective known chemokine receptors. Mechanistically, we show that chemokines such as CXCL4 mediate transcriptional and epigenetic changes in pDCs, mostly targeted to the IFN-I pathways. We describe that chemokines physically interact with DNA to form nanoparticles that promote clathrin-mediated cellular uptake and delivery of DNA in the early endosomes of pDCs. Using two separate mouse models of skin inflammation, we observed the presence of CXCL4 associated with DNA in vivo. These data reveal a noncanonical role for chemokines to serve as nucleic acid delivery vectors to modulate TLR signaling, with implications for the chronic presence of IFN-I by pDCs in autoimmune diseases.
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Affiliation(s)
- Yong Du
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,Department of Microbiology and Immunology, Weill Cornell Medical College of Cornell University, New York, NY
| | | | - Paoline Laurent
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,Department of Microbiology and Immunology, Weill Cornell Medical College of Cornell University, New York, NY
| | - Vidyanath Chaudhary
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,Department of Microbiology and Immunology, Weill Cornell Medical College of Cornell University, New York, NY
| | - Michael Pierides
- HSS Research Institute, Hospital for Special Surgery, New York, NY
| | - Chao Yang
- HSS Research Institute, Hospital for Special Surgery, New York, NY
| | - David Oliver
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY
| | - Lionel B Ivashkiv
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY.,Department of Medicine, Weill Cornell Medical College of Cornell University, New York, NY
| | - Franck J Barrat
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,Department of Microbiology and Immunology, Weill Cornell Medical College of Cornell University, New York, NY.,David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY
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16
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Li F, Lin L, Chi J, Wang H, Du M, Feng D, Wang L, Luo R, Chen H, Quan G, Cai J, Pan X, Wu C, Lu C. Guanidinium-rich lipopeptide functionalized bacteria-absorbing sponge as an effective trap-and-kill system for the elimination of focal bacterial infection. Acta Biomater 2022; 148:106-118. [PMID: 35671875 DOI: 10.1016/j.actbio.2022.05.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/30/2022] [Accepted: 05/31/2022] [Indexed: 11/01/2022]
Abstract
Focal bacterial infections are often difficult to treat due to the rapid emergence of antibiotic-resistant bacteria, high risk of relapse, and severe inflammation at local lesions. To address multidrug-resistant skin and soft tissue infections, a bacteria-absorbing sponge was prepared to involve a "trap-and-kill" mechanism. The system describes a guanidinium-rich lipopeptide functionalized lyotropic liquid-crystalline hydrogel with bicontinuous cubic networks. Amphiphilic lipopeptides can be spontaneously anchored to the lipid-water interface, exposing their bacterial targeting sequences to enhance antibacterial trapping/killing activity. Computational simulations supported our structural predictions, and the sponge was confirmed to successfully remove ∼98.8% of the bacteria in the medium. Release and degradation behavior studies indicated that the bacteria-absorbing sponge could degrade, mediate enzyme-responsive lipopeptide release, or generate ∼200 nm lipopeptide nanoparticles with environmental erosion. This implies that the sponge can effectively capture and isolate high concentrations of bacteria at the infected site and then sustainably release antimicrobial lipopeptides into deep tissues for the eradication of residual bacteria. In the animal experiment, we found that the antibacterial performance of the bacterial-absorbing sponge was significant, which demonstrated not only a long-term inhibition effect to disinfect and avoid bacterial rebound, but also a unique advantage to protect tissue from bacterial attack. STATEMENT OF SIGNIFICANCE: Host defense peptides/peptidomimetics (HDPs) have shown potential for the elimination of focal bacterial infections, but the application of their topical formulations suffers from time-consuming preparation processes, indistinctive toxicity reduction effects, and inefficient bacterial capture ability. To explore new avenues for the development of easily prepared, low-toxicity and high-efficiency topical antimicrobials, a guanidinium-rich lipopeptide was encapsulated in a lyotropic liquid-crystalline hydrogel (denoted as "bacteria-absorbing sponge") to achieve complementary superiorities. The superior characteristic of the bacteria-absorbing sponge involves a "trap-and-kill" mechanism, which undergoes not only a long-term inhibition effect to disinfect and avoid bacterial rebound, but also effective bacterial capture and isolating action to confine bacterial diffusion and protect tissues from bacterial attack.
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Affiliation(s)
- Feng Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Liming Lin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Jiaying Chi
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Hui Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Minqun Du
- Guangdong Women and Children Hospital, Guangzhou 511400, China
| | - Disang Feng
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Liqing Wang
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Rui Luo
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Hangping Chen
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Guilan Quan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou 511443, China.
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17
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Evolving and assembling to pierce through: Evolutionary and structural aspects of antimicrobial peptides. Comput Struct Biotechnol J 2022; 20:2247-2258. [PMID: 35615024 PMCID: PMC9117813 DOI: 10.1016/j.csbj.2022.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/27/2022] [Accepted: 05/01/2022] [Indexed: 11/24/2022] Open
Abstract
The burgeoning menace of antimicrobial resistance across the globe has necessitated investigations into other chemotherapeutic strategies to combat infections. Antimicrobial peptides, or host defense peptides, are a set of promising therapeutic candidates in this regard. Most of them cause membrane permeabilization and are a key component of the innate immune response to pathogenic invasion. It has also been reported that peptide self-assembly is a driving factor governing the microbicidal activity of these peptide candidates. While efforts have been made to develop novel synthetic peptides against various microbes, many clinical trials of such peptides have failed due to toxicity and hemolytic activity to the host. A function-guided rational peptide engineering, based on evolutionary principles, physicochemical properties and activity determinants of AMP activity, is expected to help in targeting specific microbes. Furthermore, it is important to develop a unified understanding of the evolution of AMPs in order to fully appreciate their importance in host defense. This review seeks to explore the evolution of AMPs and the physicochemical determinants of AMP activity. The specific interactions driving AMP self-assembly have also been reviewed, emphasizing implications of this self-assembly on microbicidal and immunomodulatory activity.
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18
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Cathelicidin LL-37 in Health and Diseases of the Oral Cavity. Biomedicines 2022; 10:biomedicines10051086. [PMID: 35625823 PMCID: PMC9138798 DOI: 10.3390/biomedicines10051086] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 04/30/2022] [Accepted: 05/02/2022] [Indexed: 02/07/2023] Open
Abstract
The mechanisms for maintaining oral cavity homeostasis are subject to the constant influence of many environmental factors, including various chemicals and microorganisms. Most of them act directly on the oral mucosa, which is the mechanical and immune barrier of the oral cavity, and such interaction might lead to the development of various oral pathologies and systemic diseases. Two important players in maintaining oral health or developing oral pathology are the oral microbiota and various immune molecules that are involved in controlling its quantitative and qualitative composition. The LL-37 peptide is an important molecule that upon release from human cathelicidin (hCAP-18) can directly perform antimicrobial action after insertion into surface structures of microorganisms and immunomodulatory function as an agonist of different cell membrane receptors. Oral LL-37 expression is an important factor in oral homeostasis that maintains the physiological microbiota but is also involved in the development of oral dysbiosis, infectious diseases (including viral, bacterial, and fungal infections), autoimmune diseases, and oral carcinomas. This peptide has also been proposed as a marker of inflammation severity and treatment outcome.
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19
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van Harten RM, Tjeerdsma-van Bokhoven JL, de Greeff A, Balhuizen MD, van Dijk A, Veldhuizen EJ, Haagsman HP, Scheenstra MR. d-enantiomers of CATH-2 enhance the response of macrophages against Streptococcus suis serotype 2. J Adv Res 2022; 36:101-112. [PMID: 35127168 PMCID: PMC8799869 DOI: 10.1016/j.jare.2021.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/20/2021] [Accepted: 05/23/2021] [Indexed: 11/30/2022] Open
Abstract
D-CATH-2 has strong antimicrobial activities towards multiple S.suis strains. D-CATH-2 ameliorates macrophage function. DCATH-2 binds LTA. DCATH-2 has prophylactic effect against S. suis infection in vivo.
Introduction Due to the increase of antibiotic resistant bacterial strains, there is an urgent need for development of alternatives to antibiotics. Cathelicidins can be such an alternative to antibiotics having both a direct antimicrobial capacity as well as an immunomodulatory function. Previously, the full d-enantiomer of chicken cathelicidin-2 (d-CATH-2) has shown to prophylactically protect chickens against infection 7 days post hatch when administered in ovo three days before hatch. Objectives To further evaluate d-CATH-2 in mammals as a candidate for an alternative to antibiotics. In this study, the prophylactic capacity of d-CATH-2 and two truncated derivatives, d-C(1–21) and d-C(4–21), was determined in mammalian cells. Methods Antibacterial assays; immune cell differentiation and modulation; cytotoxicity, isothermal titration calorimetry; in vivo prophylactic capacity of peptides in an S. suis infection model. Results d-CATH-2 and its derivatives were shown to have a strong direct antibacterial capacity against four different S. suis serotype 2 strains (P1/7, S735, D282, and OV625) in bacterial medium and even stronger in cell culture medium. In addition, d-CATH-2 and its derivatives ameliorated the efficiency of mouse bone marrow-derived macrophages (BMDM) and skewed mouse bone marrow-derived dendritic cells (BMDC) towards cells with a more macrophage-like phenotype. The peptides directly bind lipoteichoic acid (LTA) and inhibit LTA-induced activation of macrophages. In addition, S. suis killed by the peptide was unable to further activate mouse macrophages, which indicates that S. suis was eliminated by the previously reported silent killing mechanism. Administration of d-C(1–21) at 24 h or 7 days before infection resulted in a small prophylactic protection with reduced disease severity and reduced mortality of the treated mice. Conclusion d-enantiomers of CATH-2 show promise as anti-infectives against pathogenic S. suis for application in mammals.
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Affiliation(s)
- Roel M. van Harten
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, the Netherlands
| | | | - Astrid de Greeff
- Wageningen Bioveterinary Research, Wageningen University & Research, Houtribweg 39, 8221 RA Lelystad, the Netherlands
| | - Melanie D. Balhuizen
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, the Netherlands
| | - Albert van Dijk
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, the Netherlands
| | - Edwin J.A. Veldhuizen
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, the Netherlands
- Corresponding author.
| | - Henk P. Haagsman
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, the Netherlands
| | - Maaike R. Scheenstra
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, the Netherlands
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20
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Engelberg Y, Ragonis-Bachar P, Landau M. Rare by Natural Selection: Disulfide-Bonded Supramolecular Antimicrobial Peptides. Biomacromolecules 2022; 23:926-936. [DOI: 10.1021/acs.biomac.1c01353] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Yizhaq Engelberg
- Department of Biology, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Peleg Ragonis-Bachar
- Department of Biology, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Meytal Landau
- Department of Biology, Technion-Israel Institute of Technology, Haifa 3200003, Israel
- European Molecular Biology Laboratory (EMBL), Hamburg 22607, Germany
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21
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Tsai CY, Salawu EO, Li H, Lin GY, Kuo TY, Voon L, Sharma A, Hu KD, Cheng YY, Sahoo S, Stuart L, Chen CW, Chang YY, Lu YL, Ke S, Ortiz CLD, Fang BS, Wu CC, Lan CY, Fu HW, Yang LW. Helical structure motifs made searchable for functional peptide design. Nat Commun 2022; 13:102. [PMID: 35013238 PMCID: PMC8748493 DOI: 10.1038/s41467-021-27655-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 12/03/2021] [Indexed: 11/09/2022] Open
Abstract
The systematic design of functional peptides has technological and therapeutic applications. However, there is a need for pattern-based search engines that help locate desired functional motifs in primary sequences regardless of their evolutionary conservation. Existing databases such as The Protein Secondary Structure database (PSS) no longer serves the community, while the Dictionary of Protein Secondary Structure (DSSP) annotates the secondary structures when tertiary structures of proteins are provided. Here, we extract 1.7 million helices from the PDB and compile them into a database (Therapeutic Peptide Design database; TP-DB) that allows queries of compounded patterns to facilitate the identification of sequence motifs of helical structures. We show how TP-DB helps us identify a known purification-tag-specific antibody that can be repurposed into a diagnostic kit for Helicobacter pylori. We also show how the database can be used to design a new antimicrobial peptide that shows better Candida albicans clearance and lower hemolysis than its template homologs. Finally, we demonstrate how TP-DB can suggest point mutations in helical peptide blockers to prevent a targeted tumorigenic protein-protein interaction. TP-DB is made available at http://dyn.life.nthu.edu.tw/design/ .
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Affiliation(s)
- Cheng-Yu Tsai
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan.,Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, 100025, Taiwan.,Department of Otolaryngology, National Taiwan University Hospital, Taipei, 100225, Taiwan
| | - Emmanuel Oluwatobi Salawu
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan.,Bioinformatics Program, Institute of Information Sciences, Academia Sinica, Taipei, 115201, Taiwan.,Machine Learning Solutions Lab, Amazon Web Services (AWS), Herndon, VA, USA
| | - Hongchun Li
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan.,Research Center for Computer-Aided Drug Discovery, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 518055, Shenzhen, China.,College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China.,Department of Computational and Systems Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Guan-Yu Lin
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Ting-Yu Kuo
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Liyin Voon
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Adarsh Sharma
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Kai-Di Hu
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Yi-Yun Cheng
- Praexisio Taiwan Inc., New Taipei, 221425, Taiwan
| | - Sobha Sahoo
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Lutimba Stuart
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Chih-Wei Chen
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Yuan-Yu Chang
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan.,Praexisio Taiwan Inc., New Taipei, 221425, Taiwan
| | - Yu-Lin Lu
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Simai Ke
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Christopher Llynard D Ortiz
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan.,Chemical Biology and Molecular Biophysics Program, Institute of Biological Chemistry, Academia Sinica, Taipei, 115201, Taiwan.,Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Bai-Shan Fang
- College of Chemistry and Chemical Engineering, Xiamen University, 361005, Xiamen, China.,The Key Laboratory for Chemical Biology of Fujian Province, Key Lab for Synthetic Biotechnology of Xiamen City, Xiamen University, 361005, Xiamen, China
| | - Chen-Chi Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, 100225, Taiwan.,Department of Medical Research, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, 302058, Taiwan
| | - Chung-Yu Lan
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan. .,Department of Life Science, National Tsing Hua University, Hsinchu, 300044, Taiwan.
| | - Hua-Wen Fu
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan. .,Department of Life Science, National Tsing Hua University, Hsinchu, 300044, Taiwan.
| | - Lee-Wei Yang
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu, 300044, Taiwan. .,Bioinformatics Program, Institute of Information Sciences, Academia Sinica, Taipei, 115201, Taiwan. .,Physics Division, National Center for Theoretical Sciences, Taipei, 106319, Taiwan. .,PhD Program in Biomedical Artificial Intelligence, National Tsing Hua University, Hsinchu, 300044, Taiwan.
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22
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Liang JY, Li Q, Feng LB, Hu SX, Zhang SQ, Li CX, Zhang XB. Injectable antimicrobial hydrogels with antimicrobial peptide and sanguinarine controlled release ability for preventing bacterial infections. Am J Transl Res 2021; 13:12614-12625. [PMID: 34956477 PMCID: PMC8661223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 08/16/2021] [Indexed: 06/14/2023]
Abstract
The emergence of antibiotic resistant bacteria represents a significant and common clinical problem worldwide as infections are becoming increasingly common. It is urgent to broaden the sources of biomaterials that can prevent both bacterial infection and antibiotic resistance. In this work, oxidized sodium alginate/aminated hyaluronic acid (OSA/AHA) hydrogel with various proportions was developed based on Schiff base reaction. Herein, polydopamine (PDA)-Bmkn2 nanoparticle and sanguinarine were incorporated into hydrogels to enhance antibacterial properties. The prepared PDA-Bmkn2 nanoparticles, with uniform particle size and good dispersion, could serve as a delivery system for Bmkn2. The prepared hydrogels showed appropriate swelling ratio, extremely good mechanical strengths and improved biodegradability. Meanwhile, the Bmkn2 and sanguinarine were released from the hydrogels in a sustainable manner. Furthermore, OSA/AHA/sanguinarine/PDA-Bmkn2 hydrogel (less than 10 μg/mL BmKn2 and 0.2 μg/mL sanguinarine) had excellent biocompatibility. Antibacterial experiments confirmed that OSA/AHA/sanguinarine/PDA-Bmkn2 hydrogel had effective antimicrobial activity on Escherichia coli and Staphylococcus aureus. Therefore, the prepared injectable hydrogels with good biocompatibility and excellent synergistic antibacterial activity promise great potential for preventing localized bacterial infections.
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Affiliation(s)
- Jing-Yao Liang
- Institute of Dermatology, Guangzhou Medical UniversityGuangzhou 510095, Guangdong, China
- Department of Dermatology, Guangzhou Institute of DermatologyGuangzhou 510095, Guangdong, China
| | - Qian Li
- Institute of Dermatology, Guangzhou Medical UniversityGuangzhou 510095, Guangdong, China
- Department of Dermatology, Guangzhou Institute of DermatologyGuangzhou 510095, Guangdong, China
| | - Long-Bao Feng
- Beogene Biotech (Guangzhou) Co., LTDGuangzhou 510663, Guangdong, China
| | - Sheng-Xue Hu
- Beogene Biotech (Guangzhou) Co., LTDGuangzhou 510663, Guangdong, China
| | - San-Quan Zhang
- Institute of Dermatology, Guangzhou Medical UniversityGuangzhou 510095, Guangdong, China
- Department of Dermatology, Guangzhou Institute of DermatologyGuangzhou 510095, Guangdong, China
| | - Chang-Xing Li
- Department of Dermatology, Nanfang Hospital, Southern Medical UniversityGuangzhou 510515, Guangdong, China
| | - Xi-Bao Zhang
- Institute of Dermatology, Guangzhou Medical UniversityGuangzhou 510095, Guangdong, China
- Department of Dermatology, Guangzhou Institute of DermatologyGuangzhou 510095, Guangdong, China
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23
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Li RS, Liu J, Shi H, Hu PP, Wang Y, Gao PF, Wang J, Jia M, Li H, Li YF, Mao C, Li N, Huang CZ. Transformable Helical Self-Assembly for Cancerous Golgi Apparatus Disruption. NANO LETTERS 2021; 21:8455-8465. [PMID: 34569805 DOI: 10.1021/acs.nanolett.1c03112] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Golgi apparatus is a major subcellular organelle responsible for drug resistance. Golgi apparatus-targeted nanomechanical disruption provides an attractive approach for killing cancer cells by multimodal mechanism and avoiding drug resistance. Inspired by the poisonous twisted fibrils in Alzheimer's brain tissue and enhanced rigidity of helical structure in nature, we designed transformable peptide C6RVRRF4KY that can self-assemble into nontoxic nanoparticles in aqueous medium but transformed into left-handed helical fibrils (L-HFs) after targeting and furin cleavage in the Golgi apparatus of cancer cells. The L-HFs can mechanically disrupt the Golgi apparatus membrane, resulting in inhibition of cytokine secretion, collapse of the cellular structure, and eventually death of cancer cells. Repeated stimulation of the cancers by the precursors causes no acquired drug resistance, showing that mechanical disruption of subcellular organelle is an excellent strategy for cancer therapy without drug resistance. This nanomechanical disruption concept should also be applicable to multidrug-resistant bacteria and viruses.
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Affiliation(s)
- Rong Sheng Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P.R. China
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
| | - Jiahui Liu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P.R. China
| | - Hu Shi
- School of Chemistry and Chemical Engineering and Institute of Molecular Science, Shanxi University, Taiyuan 030006, P.R. China
| | - Ping Ping Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Yao Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P.R. China
| | - Peng Fei Gao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P.R. China
| | - Jian Wang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P.R. China
| | - Moye Jia
- Beijing Nuclear Magnetic Resonance Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
| | - Hongwei Li
- Beijing Nuclear Magnetic Resonance Center, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
| | - Yuan Fang Li
- Key Laboratory of Luminescence and Real-Time Analytical System, Chongqing Science and Technology Bureau, College of Pharmaceutical Sciences, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P.R. China
| | - Chengde Mao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P.R. China
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907 United States
| | - Na Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Institute of Analytical Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, P.R. China
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24
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Zsila F, Ricci M, Szigyártó IC, Singh P, Beke-Somfai T. Quorum Sensing Pseudomonas Quinolone Signal Forms Chiral Supramolecular Assemblies With the Host Defense Peptide LL-37. Front Mol Biosci 2021; 8:742023. [PMID: 34708076 PMCID: PMC8542694 DOI: 10.3389/fmolb.2021.742023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/03/2021] [Indexed: 12/21/2022] Open
Abstract
Host defense antimicrobial peptides (HDPs) constitute an integral component of the innate immune system having nonspecific activity against a broad spectrum of microorganisms. They also have diverse biological functions in wound healing, angiogenesis, and immunomodulation, where it has also been demonstrated that they have a high affinity to interact with human lipid signaling molecules. Within bacterial biofilms, quorum sensing (QS), the vital bacterial cell-to-cell communication system, is maintained by similar diffusible small molecules which control phenotypic traits, virulence factors, biofilm formation, and dispersion. Efficient eradication of bacterial biofilms is of particular importance as these colonies greatly help individual cells to tolerate antibiotics and develop antimicrobial resistance. Regarding the antibacterial function, for several HDPs, including the human cathelicidin LL-37, affinity to eradicate biofilms can exceed their activity to kill individual bacteria. However, related underlying molecular mechanisms have not been explored yet. Here, we employed circular dichroism (CD) and UV/VIS spectroscopic analysis, which revealed that LL-37 exhibits QS signal affinity. This archetypal representative of HDPs interacts with the Pseudomonas quinolone signal (PQS) molecules, producing co-assemblies with peculiar optical activity. The binding of PQS onto the asymmetric peptide chains results in chiral supramolecular architectures consisting of helically disposed, J-aggregated molecules. Besides the well-known bacterial membrane disruption activity, our data propose a novel action mechanism of LL-37. As a specific case of the so-called quorum quenching, QS signal molecules captured by the peptide are sequestered inside co-assemblies, which may interfere with the microbial QS network helping to prevent and eradicate bacterial infections.
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Affiliation(s)
- Ferenc Zsila
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences (MTA), Budapest, Hungary
| | | | | | | | - Tamás Beke-Somfai
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences (MTA), Budapest, Hungary
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25
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Xie J, Zhou M, Qian Y, Cong Z, Chen S, Zhang W, Jiang W, Dai C, Shao N, Ji Z, Zou J, Xiao X, Liu L, Chen M, Li J, Liu R. Addressing MRSA infection and antibacterial resistance with peptoid polymers. Nat Commun 2021; 12:5898. [PMID: 34625571 PMCID: PMC8501045 DOI: 10.1038/s41467-021-26221-y] [Citation(s) in RCA: 80] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 09/17/2021] [Indexed: 01/21/2023] Open
Abstract
Methicillin-Resistant Staphylococcus aureus (MRSA) induced infection calls for antibacterial agents that are not prone to antimicrobial resistance. We prepare protease-resistant peptoid polymers with variable C-terminal functional groups using a ring-opening polymerization of N-substituted N-carboxyanhydrides (NNCA), which can provide peptoid polymers easily from the one-pot synthesis. We study the optimal polymer that displays effective activity against MRSA planktonic and persister cells, effective eradication of highly antibiotic-resistant MRSA biofilms, and potent anti-infectious performance in vivo using the wound infection model, the mouse keratitis model, and the mouse peritonitis model. Peptoid polymers show insusceptibility to antimicrobial resistance, which is a prominent merit of these antimicrobial agents. The low cost, convenient synthesis and structure diversity of peptoid polymers, the superior antimicrobial performance and therapeutic potential in treating MRSA infection altogether imply great potential of peptoid polymers as promising antibacterial agents in treating MRSA infection and alleviating antibiotic resistance. Antibiotic resistance is a major issue in medicine and new antimicrobials for treating resistant infection are needed. Here, the authors report on antibacterial peptoid polymers, prepared via NNCA ring-opening polymerization, demonstrating antibacterial function against MRSA in vitro and in in vivo infection models.
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Affiliation(s)
- Jiayang Xie
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Min Zhou
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Yuxin Qian
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Zihao Cong
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Sheng Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Wenjing Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Weinan Jiang
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Chengzhi Dai
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Ning Shao
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Zhemin Ji
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Jingcheng Zou
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Ximian Xiao
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Longqiang Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Minzhang Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Jin Li
- Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 200011, Shanghai, China
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 200237, Shanghai, China. .,Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China.
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26
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Sultana A, Luo H, Ramakrishna S. Antimicrobial Peptides and Their Applications in Biomedical Sector. Antibiotics (Basel) 2021; 10:1094. [PMID: 34572676 PMCID: PMC8465024 DOI: 10.3390/antibiotics10091094] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/07/2021] [Accepted: 09/07/2021] [Indexed: 01/10/2023] Open
Abstract
In a report by WHO (2014), it was stated that antimicrobial resistance is an arising challenge that needs to be resolved. This resistance is a critical issue in terms of disease or infection treatment and is usually caused due to mutation, gene transfer, long-term usage or inadequate use of antimicrobials, survival of microbes after consumption of antimicrobials, and the presence of antimicrobials in agricultural feeds. One of the solutions to this problem is antimicrobial peptides (AMPs), which are ubiquitously present in the environment. These peptides are of concern due to their special mode of action against a wide spectrum of infections and health-related problems. The biomedical field has the highest need of AMPs as it possesses prominent desirable activity against HIV-1, skin cancer, breast cancer, in Behcet's disease treatment, as well as in reducing the release of inflammatory cells such as TNFα, IL-8, and IL-1β, enhancing the production of anti-inflammatory cytokines such as IL-10 and GM-CSF, and in wound healing properties. This review has highlighted all the major functions and applications of AMPs in the biomedical field and concludes the future potential of AMPs.
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Affiliation(s)
- Afreen Sultana
- Center for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 117581, Singapore;
| | - Hongrong Luo
- Engineering Research Center in Biomaterials, Sichuan University, Chengdu 610064, China;
| | - Seeram Ramakrishna
- Center for Nanotechnology & Sustainability, Department of Mechanical Engineering, National University of Singapore, Singapore 117581, Singapore;
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27
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Iwase R, Naruse N, Nakagawa M, Saito R, Shigenaga A, Otaka A, Hara T, Tanegashima K. Identification of Functional Domains of CXCL14 Involved in High-Affinity Binding and Intracellular Transport of CpG DNA. THE JOURNAL OF IMMUNOLOGY 2021; 207:459-469. [PMID: 34261665 DOI: 10.4049/jimmunol.2100030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/13/2021] [Indexed: 12/11/2022]
Abstract
Some CXC chemokines, including CXCL14, transport CpG oligodeoxynucleotides (ODNs) into dendritic cells (DCs), thereby activating TLR9. The molecular basis of this noncanonical function of CXC chemokines is not well understood. In this study, we investigated the CpG ODN binding and intracellular transport activities of various CXC chemokines and partial peptides of CXCL14 in mouse bone marrow-derived dendritic cells. CXCL14, CXCL4, and CXCL12 specifically bound CpG ODN, but CXCL12 failed to transport it into cells at low dose. CXCL14 N-terminal peptides 1-47, but not 1-40, was capable of transporting CpG ODN into the cell, resulting in an increase in cytokine production. However, both the 1-47 and 1-40 peptides bound CpG ODN. By contrast, CXCL14 peptides 13-50 did not possess CpG ODN binding capacity or transport activity. The chimeric peptides CXCL12 (1-22)-CXCL14 (13-47) bound CpG ODN but failed to transport it. These results suggest that amino acids 1-12 and 41-47 of CXCL14 are required for binding and intracellular transport of CpG ODN, respectively. We found that an anti-CXCL14 Ab blocked cell-surface binding and internalization of the CpG ODN/CXCL14 complex. On the basis of these findings, we propose that CXCL14 has two functional domains, one involved in DNA recognition and the other in internalization of CXCL14-CpG DNA complex via an unidentified CXCL14 receptor, which together are responsible for eliciting the CXCL14/CpG ODN-mediated TLR9 activation. These domains could play roles in CXCL14-related diseases such as arthritis, obesity-induced diabetes, and various types of carcinoma.
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Affiliation(s)
- Rina Iwase
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan.,Graduate School of Science, Department of Biological Science, Tokyo Metropolitan University, Hachioji-shi, Tokyo, Japan
| | - Naoto Naruse
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima, Japan
| | - Miho Nakagawa
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan.,Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan; and
| | - Risa Saito
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan.,Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan; and.,Department of Biological Sciences, Faculty of Science and Engineering, Chuo University, Bunkyo-ku, Tokyo, Japan
| | - Akira Shigenaga
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima, Japan
| | - Akira Otaka
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University, Shomachi, Tokushima, Japan
| | - Takahiko Hara
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan; .,Graduate School of Science, Department of Biological Science, Tokyo Metropolitan University, Hachioji-shi, Tokyo, Japan.,Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo, Japan; and
| | - Kosuke Tanegashima
- Stem Cell Project, Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan;
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28
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Deusenbery C, Wang Y, Shukla A. Recent Innovations in Bacterial Infection Detection and Treatment. ACS Infect Dis 2021; 7:695-720. [PMID: 33733747 DOI: 10.1021/acsinfecdis.0c00890] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Bacterial infections are a major threat to human health, exacerbated by increasing antibiotic resistance. These infections can result in tremendous morbidity and mortality, emphasizing the need to identify and treat pathogenic bacteria quickly and effectively. Recent developments in detection methods have focused on electrochemical, optical, and mass-based biosensors. Advances in these systems include implementing multifunctional materials, microfluidic sampling, and portable data-processing to improve sensitivity, specificity, and ease of operation. Concurrently, advances in antibacterial treatment have largely focused on targeted and responsive delivery for both antibiotics and antibiotic alternatives. Antibiotic alternatives described here include repurposed drugs, antimicrobial peptides and polymers, nucleic acids, small molecules, living systems, and bacteriophages. Finally, closed-loop therapies are combining advances in the fields of both detection and treatment. This review provides a comprehensive summary of the current trends in detection and treatment systems for bacterial infections.
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Affiliation(s)
- Carly Deusenbery
- School of Engineering, Center for Biomedical Engineering, Institute for Molecular and Nanoscale Innovation, Brown University, Providence, Rhode Island 02912, United States
| | - Yingying Wang
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Anita Shukla
- School of Engineering, Center for Biomedical Engineering, Institute for Molecular and Nanoscale Innovation, Brown University, Providence, Rhode Island 02912, United States
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29
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Petruk G, Puthia M, Petrlova J, Samsudin F, Strömdahl AC, Cerps S, Uller L, Kjellström S, Bond PJ, Schmidtchen AA. SARS-CoV-2 spike protein binds to bacterial lipopolysaccharide and boosts proinflammatory activity. J Mol Cell Biol 2021; 12:916-932. [PMID: 33295606 PMCID: PMC7799037 DOI: 10.1093/jmcb/mjaa067] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/12/2020] [Accepted: 10/30/2020] [Indexed: 12/16/2022] Open
Abstract
There is a link between high lipopolysaccharide (LPS) levels in the blood and the metabolic syndrome, and metabolic syndrome predisposes patients to severe COVID-19. Here, we define an interaction between SARS-CoV-2 spike (S) protein and LPS, leading to aggravated inflammation in vitro and in vivo. Native gel electrophoresis demonstrated that SARS-CoV-2 S protein binds to LPS. Microscale thermophoresis yielded a KD of ∼47 nM for the interaction. Computational modeling and all-atom molecular dynamics simulations further substantiated the experimental results, identifying a main LPS-binding site in SARS-CoV-2 S protein. S protein, when combined with low levels of LPS, boosted nuclear factor-kappa B (NF-κB) activation in monocytic THP-1 cells and cytokine responses in human blood and peripheral blood mononuclear cells, respectively. The in vitro inflammatory response was further validated by employing NF-κB reporter mice and in vivo bioimaging. Dynamic light scattering, transmission electron microscopy, and LPS-FITC analyses demonstrated that S protein modulated the aggregation state of LPS, providing a molecular explanation for the observed boosting effect. Taken together, our results provide an interesting molecular link between excessive inflammation during infection with SARS-CoV-2 and comorbidities involving increased levels of bacterial endotoxins.
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Affiliation(s)
- Ganna Petruk
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-22184 Lund, Sweden
| | - Manoj Puthia
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-22184 Lund, Sweden
| | - Jitka Petrlova
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-22184 Lund, Sweden
| | - Firdaus Samsudin
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR), Singapore 138671, Singapore
| | - Ann-Charlotte Strömdahl
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-22184 Lund, Sweden
| | - Samuel Cerps
- Unit of Respiratory Immunopharmacology, Department of Experimental Medicine, Lund University, SE-22184 Lund, Sweden
| | - Lena Uller
- Unit of Respiratory Immunopharmacology, Department of Experimental Medicine, Lund University, SE-22184 Lund, Sweden
| | - Sven Kjellström
- Division of Mass Spectrometry, Department of Clinical Sciences, Lund University, SE-22184 Lund, Sweden
| | - Peter J Bond
- Bioinformatics Institute (BII), Agency for Science, Technology and Research (A*STAR), Singapore 138671, Singapore.,Department of Biological Sciences, National University of Singapore, Singapore 117543, Singapore
| | - And Artur Schmidtchen
- Division of Dermatology and Venereology, Department of Clinical Sciences, Lund University, SE-22184 Lund, Sweden.,Copenhagen Wound Healing Center, Bispebjerg Hospital, Department of Biomedical Sciences, University of Copenhagen, DK-2400 Copenhagen, Denmark.,Dermatology, Skåne University Hospital, SE-22185 Lund, Sweden
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30
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Abstract
Desoxyribosenucleic acid, DNA, and cellulose molecules self-assemble in aqueous systems. This aggregation is the basis of the important functions of these biological macromolecules. Both DNA and cellulose have significant polar and nonpolar parts and there is a delicate balance between hydrophilic and hydrophobic interactions. The hydrophilic interactions related to net charges have been thoroughly studied and are well understood. On the other hand, the detailed roles of hydrogen bonding and hydrophobic interactions have remained controversial. It is found that the contributions of hydrophobic interactions in driving important processes, like the double-helix formation of DNA and the aqueous dissolution of cellulose, are dominating whereas the net contribution from hydrogen bonding is small. In reviewing the roles of different interactions for DNA and cellulose it is useful to compare with the self-assembly features of surfactants, the simplest case of amphiphilic molecules. Pertinent information on the amphiphilic character of cellulose and DNA can be obtained from the association with surfactants, as well as on modifying the hydrophobic interactions by additives.
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31
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Cardoso P, Glossop H, Meikle TG, Aburto-Medina A, Conn CE, Sarojini V, Valery C. Molecular engineering of antimicrobial peptides: microbial targets, peptide motifs and translation opportunities. Biophys Rev 2021; 13:35-69. [PMID: 33495702 PMCID: PMC7817352 DOI: 10.1007/s12551-021-00784-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 01/07/2021] [Indexed: 02/07/2023] Open
Abstract
The global public health threat of antimicrobial resistance has led the scientific community to highly engage into research on alternative strategies to the traditional small molecule therapeutics. Here, we review one of the most popular alternatives amongst basic and applied research scientists, synthetic antimicrobial peptides. The ease of peptide chemical synthesis combined with emerging engineering principles and potent broad-spectrum activity, including against multidrug-resistant strains, has motivated intense scientific focus on these compounds for the past decade. This global effort has resulted in significant advances in our understanding of peptide antimicrobial activity at the molecular scale. Recent evidence of molecular targets other than the microbial lipid membrane, and efforts towards consensus antimicrobial peptide motifs, have supported the rise of molecular engineering approaches and design tools, including machine learning. Beyond molecular concepts, supramolecular chemistry has been lately added to the debate; and helped unravel the impact of peptide self-assembly on activity, including on biofilms and secondary targets, while providing new directions in pharmaceutical formulation through taking advantage of peptide self-assembled nanostructures. We argue that these basic research advances constitute a solid basis for promising industry translation of rationally designed synthetic peptide antimicrobials, not only as novel drugs against multidrug-resistant strains but also as components of emerging antimicrobial biomaterials. This perspective is supported by recent developments of innovative peptide-based and peptide-carrier nanobiomaterials that we also review.
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Affiliation(s)
- Priscila Cardoso
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia.,School of Science, RMIT University, Melbourne, Australia
| | - Hugh Glossop
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | | | | | | | | | - Celine Valery
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Australia
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32
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Lee EY, Chan LC, Wang H, Lieng J, Hung M, Srinivasan Y, Wang J, Waschek JA, Ferguson AL, Lee KF, Yount NY, Yeaman MR, Wong GCL. PACAP is a pathogen-inducible resident antimicrobial neuropeptide affording rapid and contextual molecular host defense of the brain. Proc Natl Acad Sci U S A 2021; 118:e1917623117. [PMID: 33372152 PMCID: PMC7817161 DOI: 10.1073/pnas.1917623117] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Defense of the central nervous system (CNS) against infection must be accomplished without generation of potentially injurious immune cell-mediated or off-target inflammation which could impair key functions. As the CNS is an immune-privileged compartment, inducible innate defense mechanisms endogenous to the CNS likely play an essential role in this regard. Pituitary adenylate cyclase-activating polypeptide (PACAP) is a neuropeptide known to regulate neurodevelopment, emotion, and certain stress responses. While PACAP is known to interact with the immune system, its significance in direct defense of brain or other tissues is not established. Here, we show that our machine-learning classifier can screen for immune activity in neuropeptides, and correctly identified PACAP as an antimicrobial neuropeptide in agreement with previous experimental work. Furthermore, synchrotron X-ray scattering, antimicrobial assays, and mechanistic fingerprinting provided precise insights into how PACAP exerts antimicrobial activities vs. pathogens via multiple and synergistic mechanisms, including dysregulation of membrane integrity and energetics and activation of cell death pathways. Importantly, resident PACAP is selectively induced up to 50-fold in the brain in mouse models of Staphylococcus aureus or Candida albicans infection in vivo, without inducing immune cell infiltration. We show differential PACAP induction even in various tissues outside the CNS, and how these observed patterns of induction are consistent with the antimicrobial efficacy of PACAP measured in conditions simulating specific physiologic contexts of those tissues. Phylogenetic analysis of PACAP revealed close conservation of predicted antimicrobial properties spanning primitive invertebrates to modern mammals. Together, these findings substantiate our hypothesis that PACAP is an ancient neuro-endocrine-immune effector that defends the CNS against infection while minimizing potentially injurious neuroinflammation.
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Affiliation(s)
- Ernest Y Lee
- Department of Bioengineering, University of California, Los Angeles, CA 90095
- UCLA-Caltech Medical Scientist Training Program, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095
| | - Liana C Chan
- Lundquist Institute for Biomedical Innovation, Harbor-UCLA Medical Center, Torrance, CA 90509
- Division of Molecular Medicine, Los Angeles County, Harbor-UCLA Medical Center, Torrance, CA 90509
- Division of Infectious Diseases, Los Angeles County, Harbor-UCLA Medical Center, Torrance, CA 90509
| | - Huiyuan Wang
- Lundquist Institute for Biomedical Innovation, Harbor-UCLA Medical Center, Torrance, CA 90509
- Division of Molecular Medicine, Los Angeles County, Harbor-UCLA Medical Center, Torrance, CA 90509
| | - Juelline Lieng
- Department of Bioengineering, University of California, Los Angeles, CA 90095
| | - Mandy Hung
- Department of Bioengineering, University of California, Los Angeles, CA 90095
| | - Yashes Srinivasan
- Department of Bioengineering, University of California, Los Angeles, CA 90095
| | - Jennifer Wang
- Department of Bioengineering, University of California, Los Angeles, CA 90095
| | - James A Waschek
- Semel Institute for Neuroscience and Human Behavior, Intellectual Development and Disabilities Research Center, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Andrew L Ferguson
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637
| | - Kuo-Fen Lee
- Peptide Biology Laboratories, Salk Institute for Biological Studies, La Jolla, CA 92037
| | - Nannette Y Yount
- Lundquist Institute for Biomedical Innovation, Harbor-UCLA Medical Center, Torrance, CA 90509
- Division of Molecular Medicine, Los Angeles County, Harbor-UCLA Medical Center, Torrance, CA 90509
| | - Michael R Yeaman
- Division of Molecular Medicine, Los Angeles County, Harbor-UCLA Medical Center, Torrance, CA 90509;
- Division of Infectious Diseases, Los Angeles County, Harbor-UCLA Medical Center, Torrance, CA 90509
- Semel Institute for Neuroscience and Human Behavior, Intellectual Development and Disabilities Research Center, David Geffen School of Medicine, University of California, Los Angeles, CA 90095
| | - Gerard C L Wong
- Department of Bioengineering, University of California, Los Angeles, CA 90095;
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
- California NanoSystems Institute, University of California, Los Angeles, CA 90095
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33
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Kurpe SR, Grishin SY, Surin AK, Panfilov AV, Slizen MV, Chowdhury SD, Galzitskaya OV. Antimicrobial and Amyloidogenic Activity of Peptides. Can Antimicrobial Peptides Be Used against SARS-CoV-2? Int J Mol Sci 2020; 21:E9552. [PMID: 33333996 PMCID: PMC7765370 DOI: 10.3390/ijms21249552] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/07/2020] [Accepted: 12/12/2020] [Indexed: 02/07/2023] Open
Abstract
At present, much attention is paid to the use of antimicrobial peptides (AMPs) of natural and artificial origin to combat pathogens. AMPs have several points that determine their biological activity. We analyzed the structural properties of AMPs, as well as described their mechanism of action and impact on pathogenic bacteria and viruses. Recently published data on the development of new AMP drugs based on a combination of molecular design and genetic engineering approaches are presented. In this article, we have focused on information on the amyloidogenic properties of AMP. This review examines AMP development strategies from the perspective of the current high prevalence of antibiotic-resistant bacteria, and the potential prospects and challenges of using AMPs against infection caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
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Affiliation(s)
- Stanislav R. Kurpe
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (S.R.K.); (S.Y.G.); (A.K.S.); (A.V.P.); (M.V.S.)
| | - Sergei Yu. Grishin
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (S.R.K.); (S.Y.G.); (A.K.S.); (A.V.P.); (M.V.S.)
| | - Alexey K. Surin
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (S.R.K.); (S.Y.G.); (A.K.S.); (A.V.P.); (M.V.S.)
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia
- State Research Center for Applied Microbiology and Biotechnology, 142279 Obolensk, Russia
| | - Alexander V. Panfilov
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (S.R.K.); (S.Y.G.); (A.K.S.); (A.V.P.); (M.V.S.)
| | - Mikhail V. Slizen
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (S.R.K.); (S.Y.G.); (A.K.S.); (A.V.P.); (M.V.S.)
| | - Saikat D. Chowdhury
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, West Bengal, India;
| | - Oxana V. Galzitskaya
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (S.R.K.); (S.Y.G.); (A.K.S.); (A.V.P.); (M.V.S.)
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia
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34
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Chen X, Yang X, de Anda J, Huang J, Li D, Xu H, Shields KS, Džunková M, Hansen J, Patel IJ, Yee EU, Golenbock DT, Grant MA, Wong GCL, Kelly CP. Clostridioides difficile Toxin A Remodels Membranes and Mediates DNA Entry Into Cells to Activate Toll-Like Receptor 9 Signaling. Gastroenterology 2020; 159:2181-2192.e1. [PMID: 32841647 PMCID: PMC8720510 DOI: 10.1053/j.gastro.2020.08.038] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/31/2020] [Accepted: 08/18/2020] [Indexed: 01/05/2023]
Abstract
BACKGROUND & AIMS Clostridioides difficile toxin A (TcdA) activates the innate immune response. TcdA co-purifies with DNA. Toll-like receptor 9 (TLR9) recognizes bacterial DNA to initiate inflammation. We investigated whether DNA bound to TcdA activates an inflammatory response in murine models of C difficile infection via activation of TLR9. METHODS We performed studies with human colonocytes and monocytes and macrophages from wild-type and TLR9 knockout mice incubated with TcdA or its antagonist (ODN TTAGGG) or transduced with vectors encoding TLR9 or small-interfering RNAs. Cytokine production was measured with enzyme-linked immunosorbent assay. We studied a transduction domain of TcdA (TcdA57-80), which was predicted by machine learning to have cell-penetrating activity and confirmed by synchrotron small-angle X-ray scattering. Intestines of CD1 mice, C57BL6J mice, and mice that express a form of TLR9 that is not activated by CpG DNA were injected with TcdA, TLR9 antagonist, or both. Enterotoxicity was estimated based on loop weight to length ratios. A TLR9 antagonist was tested in mice infected with C difficile. We incubated human colon explants with an antagonist of TLR9 and measured TcdA-induced production of cytokines. RESULTS The TcdA57-80 protein transduction domain had membrane remodeling activity that allowed TcdA to enter endosomes. TcdA-bound DNA entered human colonocytes. TLR9 was required for production of cytokines by cultured cells and in human colon explants incubated with TcdA. TLR9 was required in TcdA-induced mice intestinal secretions and in the survival of mice infected by C difficile. Even in a protease-rich environment, in which only fragments of TcdA exist, the TcdA57-80 domain organized DNA into a geometrically ordered structure that activated TLR9. CONCLUSIONS TcdA from C difficile can bind and organize bacterial DNA to activate TLR9. TcdA and TcdA fragments remodel membranes, which allows them to access endosomes and present bacterial DNA to and activate TLR9. Rather than inactivating the ability of DNA to bind TLR9, TcdA appears to chaperone and organize DNA into an inflammatory, spatially periodic structure.
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Affiliation(s)
- Xinhua Chen
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.
| | - Xiaotong Yang
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA,Institute of Microbiology and Immunology, College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Jaime de Anda
- Department of Bioengineering, Department of Chemistry and Biochemistry, California Nano Systems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jun Huang
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA,Department of Colorectal Surgery, the 6th Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Dan Li
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Hua Xu
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Kelsey S. Shields
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Mária Džunková
- DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Joshua Hansen
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | - Eric U. Yee
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Douglas T. Golenbock
- Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, MA, USA
| | - Marianne A. Grant
- Division of Molecular and Vascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Gerard C. L. Wong
- Department of Bioengineering, Department of Chemistry and Biochemistry, California Nano Systems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA,Corresponding Authors: Xinhua Chen, PhD, , or Gerard C. L. Wong, PhD,
| | - Ciarán P. Kelly
- Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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35
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Concentration- and pH-Dependent Oligomerization of the Thrombin-Derived C-Terminal Peptide TCP-25. Biomolecules 2020; 10:biom10111572. [PMID: 33228042 PMCID: PMC7699335 DOI: 10.3390/biom10111572] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 11/04/2020] [Accepted: 11/09/2020] [Indexed: 02/08/2023] Open
Abstract
Peptide oligomerization dynamics affects peptide structure, activity, and pharmacodynamic properties. The thrombin C-terminal peptide, TCP-25 (GKYGFYTHVFRLKKWIQKVIDQFGE), is currently in preclinical development for improved wound healing and infection prevention. It exhibits turbidity when formulated at pH 7.4, particularly at concentrations of 0.3 mM or more. We used biochemical and biophysical approaches to explore whether the peptide self-associates and forms oligomers. The peptide showed a dose-dependent increase in turbidity as well as α-helical structure at pH 7.4, a phenomenon not observed at pH 5.0. By analyzing the intrinsic tryptophan fluorescence, we demonstrate that TCP-25 is more stable at high concentrations (0.3 mM) when exposed to high temperatures or a high concentration of denaturant agents, which is compatible with oligomer formation. The denaturation process was reversible above 100 µM of peptide. Dynamic light scattering demonstrated that TCP-25 oligomerization is sensitive to changes in pH, time, and temperature. Computational modeling with an active 18-mer region of TCP-25 showed that the peptide can form pH-dependent higher-order end-to-end oligomers and micelle-like structures, which is in agreement with the experimental data. Thus, TCP-25 exhibits pH- and temperature-dependent dynamic changes involving helical induction and reversible oligomerization, which explains the observed turbidity of the pharmacologically developed formulation.
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36
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Lachowicz JI, Szczepski K, Scano A, Casu C, Fais S, Orrù G, Pisano B, Piras M, Jaremko M. The Best Peptidomimetic Strategies to Undercover Antibacterial Peptides. Int J Mol Sci 2020; 21:E7349. [PMID: 33027928 PMCID: PMC7583890 DOI: 10.3390/ijms21197349] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 02/05/2023] Open
Abstract
Health-care systems that develop rapidly and efficiently may increase the lifespan of humans. Nevertheless, the older population is more fragile, and is at an increased risk of disease development. A concurrently growing number of surgeries and transplantations have caused antibiotics to be used much more frequently, and for much longer periods of time, which in turn increases microbial resistance. In 1945, Fleming warned against the abuse of antibiotics in his Nobel lecture: "The time may come when penicillin can be bought by anyone in the shops. Then there is the danger that the ignorant man may easily underdose himself and by exposing his microbes to non-lethal quantities of the drug make them resistant". After 70 years, we are witnessing the fulfilment of Fleming's prophecy, as more than 700,000 people die each year due to drug-resistant diseases. Naturally occurring antimicrobial peptides protect all living matter against bacteria, and now different peptidomimetic strategies to engineer innovative antibiotics are being developed to defend humans against bacterial infections.
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Affiliation(s)
- Joanna Izabela Lachowicz
- Department of Medical Sciences and Public Health, University of Cagliari, Cittadella Universitaria, 09042 Monserrato, Italy; (B.P.); (M.P.)
| | - Kacper Szczepski
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;
| | - Alessandra Scano
- Department of Surgical Science, OBL Oral Biotechnology Laboratory, University of Cagliari, 09124 Cagliari, Italy; (A.S.); (C.C.); (S.F.); (G.O.)
| | - Cinzia Casu
- Department of Surgical Science, OBL Oral Biotechnology Laboratory, University of Cagliari, 09124 Cagliari, Italy; (A.S.); (C.C.); (S.F.); (G.O.)
| | - Sara Fais
- Department of Surgical Science, OBL Oral Biotechnology Laboratory, University of Cagliari, 09124 Cagliari, Italy; (A.S.); (C.C.); (S.F.); (G.O.)
| | - Germano Orrù
- Department of Surgical Science, OBL Oral Biotechnology Laboratory, University of Cagliari, 09124 Cagliari, Italy; (A.S.); (C.C.); (S.F.); (G.O.)
| | - Barbara Pisano
- Department of Medical Sciences and Public Health, University of Cagliari, Cittadella Universitaria, 09042 Monserrato, Italy; (B.P.); (M.P.)
| | - Monica Piras
- Department of Medical Sciences and Public Health, University of Cagliari, Cittadella Universitaria, 09042 Monserrato, Italy; (B.P.); (M.P.)
| | - Mariusz Jaremko
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;
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37
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Fu T, Islam MS, Ali M, Wu J, Dong W. Two antimicrobial genes from Aegilops tauschii Cosson identified by the Bacillus subtilis expression system. Sci Rep 2020; 10:13346. [PMID: 32770019 PMCID: PMC7414872 DOI: 10.1038/s41598-020-70314-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 07/21/2020] [Indexed: 01/08/2023] Open
Abstract
Antimicrobial genes play an important role as a primary defense mechanism in all multicellular organisms. We chose Bacillus subtilis as a target pathogen indicator and transferred the Aegilops tauschii Cosson cDNA library into B. subtilis cells. Expression of the candidate antimicrobial gene can inhibit B. subtilis cell growth. Using this strategy, we screened six genes that have an internal effect on the indicator bacteria. Then, the secreted proteins were extracted and tested; two genes, AtR100 and AtR472, were found to have strong external antimicrobial activities with broad-spectrum resistance against Xanthomonas oryzae pv. oryzicola, Clavibacter fangii, and Botrytis cinerea. Additionally, thermal stability tests indicated that the antimicrobial activities of both proteins were thermostable. Furthermore, these two proteins exhibited no significant hemolytic activities. To test the feasibility of application at the industrial level, liquid fermentation and spray drying of these two proteins were conducted. Powder dilutions were shown to have significant inhibitory effects on B. cinerea. Fluorescence microscopy and flow cytometry results showed that the purified protein impaired and targeted the cell membranes. This study revealed that these two antimicrobial peptides could potentially be used for replacing antibiotics, which would provide the chance to reduce the emergence of drug resistance.
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Affiliation(s)
- Tingting Fu
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Md Samiul Islam
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Mohsin Ali
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Jia Wu
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China
| | - Wubei Dong
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, 430070, Hubei Province, China.
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38
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Engelberg Y, Landau M. The Human LL-37(17-29) antimicrobial peptide reveals a functional supramolecular structure. Nat Commun 2020; 11:3894. [PMID: 32753597 PMCID: PMC7403366 DOI: 10.1038/s41467-020-17736-x] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 07/10/2020] [Indexed: 11/09/2022] Open
Abstract
Here, we demonstrate the self-assembly of the antimicrobial human LL-37 active core (residues 17–29) into a protein fibril of densely packed helices. The surface of the fibril encompasses alternating hydrophobic and positively charged zigzagged belts, which likely underlie interactions with and subsequent disruption of negatively charged lipid bilayers, such as bacterial membranes. LL-3717–29 correspondingly forms wide, ribbon-like, thermostable fibrils in solution, which co-localize with bacterial cells. Structure-guided mutagenesis analyses supports the role of self-assembly in antibacterial activity. LL-3717–29 resembles, in sequence and in the ability to form amphipathic helical fibrils, the bacterial cytotoxic PSMα3 peptide that assembles into cross-α amyloid fibrils. This argues helical, self-assembling, basic building blocks across kingdoms of life and points to potential structural mimicry mechanisms. The findings expose a protein fibril which performs a biological activity, and offer a scaffold for functional and durable biomaterials for a wide range of medical and technological applications. The human antibacterial and immunomodulatory peptide LL-37 is a hCAP-18 protein cleavage product that self-assembles. Here, the authors present the human and gorilla LL-37 (17–29) crystal structures, revealing a self-assembly of amphipathic helices into a densely packed and elongated hexameric structure with a central pore and mutagenesis experiments support the role of self-assembly for antibacterial activity.
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Affiliation(s)
- Yizhaq Engelberg
- Department of Biology, Technion-Israel Institute of Technology, 3200003, Haifa, Israel
| | - Meytal Landau
- Department of Biology, Technion-Israel Institute of Technology, 3200003, Haifa, Israel. .,Centre for Structural Systems Biology (CSSB), and European Molecular Biology Laboratory (EMBL), 22607, Hamburg, Germany.
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39
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Lee EY, Srinivasan Y, de Anda J, Nicastro LK, Tükel Ç, Wong GCL. Functional Reciprocity of Amyloids and Antimicrobial Peptides: Rethinking the Role of Supramolecular Assembly in Host Defense, Immune Activation, and Inflammation. Front Immunol 2020; 11:1629. [PMID: 32849553 PMCID: PMC7412598 DOI: 10.3389/fimmu.2020.01629] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/17/2020] [Indexed: 12/15/2022] Open
Abstract
Pathological self-assembly is a concept that is classically associated with amyloids, such as amyloid-β (Aβ) in Alzheimer's disease and α-synuclein in Parkinson's disease. In prokaryotic organisms, amyloids are assembled extracellularly in a similar fashion to human amyloids. Pathogenicity of amyloids is attributed to their ability to transform into several distinct structural states that reflect their downstream biological consequences. While the oligomeric forms of amyloids are thought to be responsible for their cytotoxicity via membrane permeation, their fibrillar conformations are known to interact with the innate immune system to induce inflammation. Furthermore, both eukaryotic and prokaryotic amyloids can self-assemble into molecular chaperones to bind nucleic acids, enabling amplification of Toll-like receptor (TLR) signaling. Recent work has shown that antimicrobial peptides (AMPs) follow a strikingly similar paradigm. Previously, AMPs were thought of as peptides with the primary function of permeating microbial membranes. Consistent with this, many AMPs are facially amphiphilic and can facilitate membrane remodeling processes such as pore formation and fusion. We show that various AMPs and chemokines can also chaperone and organize immune ligands into amyloid-like ordered supramolecular structures that are geometrically optimized for binding to TLRs, thereby amplifying immune signaling. The ability of amphiphilic AMPs to self-assemble cooperatively into superhelical protofibrils that form structural scaffolds for the ordered presentation of immune ligands like DNA and dsRNA is central to inflammation. It is interesting to explore the notion that the assembly of AMP protofibrils may be analogous to that of amyloid aggregates. Coming full circle, recent work has suggested that Aβ and other amyloids also have AMP-like antimicrobial functions. The emerging perspective is one in which assembly affords a more finely calibrated system of recognition and response: the detection of single immune ligands, immune ligands bound to AMPs, and immune ligands spatially organized to varying degrees by AMPs, result in different immunologic outcomes. In this framework, not all ordered structures generated during multi-stepped AMP (or amyloid) assembly are pathological in origin. Supramolecular structures formed during this process serve as signatures to the innate immune system to orchestrate immune amplification in a proportional, situation-dependent manner.
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Affiliation(s)
- Ernest Y Lee
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, United States.,UCLA-Caltech Medical Scientist Training Program, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Yashes Srinivasan
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, United States
| | - Jaime de Anda
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, United States
| | - Lauren K Nicastro
- Department of Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Çagla Tükel
- Department of Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Gerard C L Wong
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, United States.,Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, United States.,California Nano Systems Institute, University of California, Los Angeles, Los Angeles, CA, United States
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40
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Osada K. Structural Polymorphism of Single pDNA Condensates Elicited by Cationic Block Polyelectrolytes. Polymers (Basel) 2020; 12:polym12071603. [PMID: 32707655 PMCID: PMC7408586 DOI: 10.3390/polym12071603] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/15/2020] [Accepted: 07/16/2020] [Indexed: 12/17/2022] Open
Abstract
DNA folding is a core phenomenon in genome packaging within a nucleus. Such a phenomenon is induced by polyelectrolyte complexation between anionic DNA and cationic proteins of histones. In this regard, complexes formed between DNA and cationic polyelectrolytes have been investigated as models to gain insight into genome packaging. Upon complexation, DNA undergoes folding to reduce its occupied volume, which often results in multi-complex associated aggregates. However, when cationic copolymers comprising a polycation block and a neutral hydrophilic polymer block are used instead, DNA undergoes folding as a single molecule within a spontaneously formed polyplex micelle (PM), thereby allowing the observation of the higher-order structures that DNA forms. The DNA complex forms polymorphic structures, including globular, rod-shaped, and ring-shaped (toroidal) structures. This review focuses on the polymorphism of DNA, particularly, to elucidate when, how, and why DNA organizes into these structures with cationic copolymers. The interactions between DNA and the copolymers, and the specific nature of DNA in rigidity; i.e., rigid but foldable, play significant roles in the observed polymorphism. Moreover, PMs serve as potential gene vectors for systemic application. The significance of the controlled DNA folding for such an application is addressed briefly in the last part.
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Affiliation(s)
- Kensuke Osada
- Quantum Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology (QST), Anagawa, Inage-ku, Chiba-shi, Chiba 263-8555, Japan
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41
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Di Domizio J, Belkhodja C, Chenuet P, Fries A, Murray T, Mondéjar PM, Demaria O, Conrad C, Homey B, Werner S, Speiser DE, Ryffel B, Gilliet M. The commensal skin microbiota triggers type I IFN-dependent innate repair responses in injured skin. Nat Immunol 2020; 21:1034-1045. [PMID: 32661363 DOI: 10.1038/s41590-020-0721-6] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 05/27/2020] [Indexed: 01/25/2023]
Abstract
Skin wounds heal by coordinated induction of inflammation and tissue repair, but the initiating events are poorly defined. Here we uncover a fundamental role of commensal skin microbiota in this process and show that it is mediated by the recruitment and the activation of type I interferon (IFN)-producing plasmacytoid DC (pDC). Commensal bacteria colonizing skin wounds trigger activation of neutrophils to express the chemokine CXCL10, which recruits pDC and acts as an antimicrobial protein to kill exposed microbiota, leading to the formation of CXCL10-bacterial DNA complexes. These complexes and not complexes with host-derived DNA activate pDC to produce type I IFNs, which accelerate wound closure by triggering skin inflammation and early T cell-independent wound repair responses, mediated by macrophages and fibroblasts that produce major growth factors required for healing. These findings identify a key function of commensal microbiota in driving a central innate wound healing response of the skin.
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Affiliation(s)
- Jeremy Di Domizio
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Cyrine Belkhodja
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Pauline Chenuet
- Laboratory of Experimental and Molecular Immunology and Neurogenetics, UMR 7355 CNRS-University of Orleans, Orleans, France
| | - Anissa Fries
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Timothy Murray
- Department of Oncology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Paula Marcos Mondéjar
- Department of Oncology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Olivier Demaria
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Curdin Conrad
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Bernhard Homey
- Department of Dermatology, Medical Faculty, Heinrich-Heine-University, Duesseldorf, Germany
| | - Sabine Werner
- ETH Zurich, Institute of Molecular Health Sciences, Zurich, Switzerland
| | - Daniel E Speiser
- Department of Oncology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland
| | - Bernhard Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics, UMR 7355 CNRS-University of Orleans, Orleans, France.,Division of Immunology, Department of Pathology, Institute of Infectious Disease and Molecular Medicine, Health Sciences Faculty, University of Cape Town, and South Africa Medical Research Council, Cape Town, South Africa
| | - Michel Gilliet
- Department of Dermatology, CHUV University Hospital, University of Lausanne, Lausanne, Switzerland.
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42
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Simonson AW, Aronson MR, Medina SH. Supramolecular Peptide Assemblies as Antimicrobial Scaffolds. Molecules 2020; 25:E2751. [PMID: 32545885 PMCID: PMC7355828 DOI: 10.3390/molecules25122751] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/11/2020] [Accepted: 06/11/2020] [Indexed: 12/15/2022] Open
Abstract
Antimicrobial discovery in the age of antibiotic resistance has demanded the prioritization of non-conventional therapies that act on new targets or employ novel mechanisms. Among these, supramolecular antimicrobial peptide assemblies have emerged as attractive therapeutic platforms, operating as both the bactericidal agent and delivery vector for combinatorial antibiotics. Leveraging their programmable inter- and intra-molecular interactions, peptides can be engineered to form higher ordered monolithic or co-assembled structures, including nano-fibers, -nets, and -tubes, where their unique bifunctionalities often emerge from the supramolecular state. Further advancements have included the formation of macroscopic hydrogels that act as bioresponsive, bactericidal materials. This systematic review covers recent advances in the development of supramolecular antimicrobial peptide technologies and discusses their potential impact on future drug discovery efforts.
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Affiliation(s)
- Andrew W. Simonson
- Department of Biomedical Engineering, The Pennsylvania State University, Suite 122, CBE Building, University Park, PA 16802-4400, USA; (A.W.S.); (M.R.A.)
| | - Matthew R. Aronson
- Department of Biomedical Engineering, The Pennsylvania State University, Suite 122, CBE Building, University Park, PA 16802-4400, USA; (A.W.S.); (M.R.A.)
| | - Scott H. Medina
- Department of Biomedical Engineering, The Pennsylvania State University, Suite 122, CBE Building, University Park, PA 16802-4400, USA; (A.W.S.); (M.R.A.)
- Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA 16802-4400, USA
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43
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Scheenstra MR, van Harten RM, Veldhuizen EJA, Haagsman HP, Coorens M. Cathelicidins Modulate TLR-Activation and Inflammation. Front Immunol 2020; 11:1137. [PMID: 32582207 PMCID: PMC7296178 DOI: 10.3389/fimmu.2020.01137] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/11/2020] [Indexed: 12/30/2022] Open
Abstract
Cathelicidins are short cationic peptides that are part of the innate immune system. At first, these peptides were studied mostly for their direct antimicrobial killing capacity, but nowadays they are more and more appreciated for their immunomodulatory functions. In this review, we will provide a comprehensive overview of the various effects cathelicidins have on the detection of damage- and microbe-associated molecular patterns, with a special focus on their effects on Toll-like receptor (TLR) activation. We review the available literature based on TLR ligand types, which can roughly be divided into lipidic ligands, such as LPS and lipoproteins, and nucleic-acid ligands, such as RNA and DNA. For both ligand types, we describe how direct cathelicidin-ligand interactions influence TLR activation, by for instance altering ligand stability, cellular uptake and receptor interaction. In addition, we will review the more indirect mechanisms by which cathelicidins affect downstream TLR-signaling. To place all this information in a broader context, we discuss how these cathelicidin-mediated effects can have an impact on how the host responds to infectious organisms as well as how these effects play a role in the exacerbation of inflammation in auto-immune diseases. Finally, we discuss how these immunomodulatory activities can be exploited in vaccine development and cancer therapies.
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Affiliation(s)
- Maaike R Scheenstra
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, Netherlands
| | - Roel M van Harten
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, Netherlands
| | - Edwin J A Veldhuizen
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, Netherlands
| | - Henk P Haagsman
- Division of Infectious Diseases and Immunology, Department of Biomolecular Health Sciences, Utrecht University, Utrecht, Netherlands
| | - Maarten Coorens
- Division of Clinical Microbiology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden.,Department of Clinical Microbiology, Karolinska University Laboratory, Stockholm, Sweden
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44
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Zhou M, Qian Y, Xie J, Zhang W, Jiang W, Xiao X, Chen S, Dai C, Cong Z, Ji Z, Shao N, Liu L, Wu Y, Liu R. Poly(2‐Oxazoline)‐Based Functional Peptide Mimics: Eradicating MRSA Infections and Persisters while Alleviating Antimicrobial Resistance. Angew Chem Int Ed Engl 2020; 59:6412-6419. [DOI: 10.1002/anie.202000505] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Indexed: 01/04/2023]
Affiliation(s)
- Min Zhou
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuxin Qian
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Jiayang Xie
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Wenjing Zhang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Weinan Jiang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ximian Xiao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Sheng Chen
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Chengzhi Dai
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zihao Cong
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zhemin Ji
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ning Shao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Longqiang Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuequn Wu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Runhui Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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45
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Zhou M, Qian Y, Xie J, Zhang W, Jiang W, Xiao X, Chen S, Dai C, Cong Z, Ji Z, Shao N, Liu L, Wu Y, Liu R. Poly(2‐Oxazoline)‐Based Functional Peptide Mimics: Eradicating MRSA Infections and Persisters while Alleviating Antimicrobial Resistance. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000505] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Min Zhou
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuxin Qian
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Jiayang Xie
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Wenjing Zhang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Weinan Jiang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ximian Xiao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Sheng Chen
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Chengzhi Dai
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zihao Cong
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zhemin Ji
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ning Shao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Longqiang Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuequn Wu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Runhui Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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Chen S, Shao X, Xiao X, Dai Y, Wang Y, Xie J, Jiang W, Sun Y, Cong Z, Qiao Z, Zhang H, Liu L, Zhang Q, Zhang W, Zheng L, Yu B, Chen M, Cui W, Fei J, Liu R. Host Defense Peptide Mimicking Peptide Polymer Exerting Fast, Broad Spectrum, and Potent Activities toward Clinically Isolated Multidrug-Resistant Bacteria. ACS Infect Dis 2020; 6:479-488. [PMID: 31922723 DOI: 10.1021/acsinfecdis.9b00410] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Multidrug-resistant (MDR) bacteria have emerged quickly and have caused serious nosocomial infections. It is urgent to develop novel antimicrobial agents for treating MDR bacterial infections. In this study, we isolated 45 strains of bacteria from hospital patients and found shockingly that most of these strains were MDR to antimicrobial drugs. This inspired us to explore antimicrobial peptide polymers as synthetic mimics of host defense peptides in combating drug-resistant bacteria and the formidable antimicrobial challenge. We found that peptide polymer 80:20 DM:Bu (where DM is a hydrophilic/cationic subunit and Bu is a hydrophobic subunit) displayed fast bacterial killing, broad spectrum, and potent activity against clinically isolated strains of MDR bacteria. Moreover, peptide polymer 80:20 DM:Bu displayed potent in vivo antibacterial efficacy, comparable to the performance of polymyxin B, in a Pseudomonas aeruginosa (P. aeruginosa) infected rat full-thickness wound model. The peptide polymer can be easily synthesized from ring-opening polymerization with remarkable reproducibility in structural properties and biological activities. The peptide polymer's potent and broad spectrum antimicrobial activities against MDR bacteria in vitro and in vivo, resistance to proteolysis, and high structural diversity altogether imply a great potential of peptide polymer 80:20 DM:Bu in antimicrobial applications as synthetic mimics of host defense peptides.
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Affiliation(s)
- Sheng Chen
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
- Shanghai Ruijin Rehabilitation Hospital, Shanghai 200023, China
| | - Xiaoyan Shao
- Shanghai Ruijin Rehabilitation Hospital, Shanghai 200023, China
| | - Ximian Xiao
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yidong Dai
- Shanghai Ruijin Rehabilitation Hospital, Shanghai 200023, China
| | - Yun Wang
- Shanghai Ruijin Rehabilitation Hospital, Shanghai 200023, China
| | - Jiayang Xie
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Weinan Jiang
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yun Sun
- Shanghai Ruijin Rehabilitation Hospital, Shanghai 200023, China
| | - Zihao Cong
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhongqian Qiao
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Haodong Zhang
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Longqiang Liu
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Qiang Zhang
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wenjing Zhang
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Liang Zheng
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing 100029, China
| | - Bingran Yu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, North Third Ring Road 15, Chaoyang District, Beijing 100029, China
| | - Minzhang Chen
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Wenguo Cui
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, China
| | - Jian Fei
- Department of General Surgery, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, Key Laboratory for Ultrafine Materials of Ministry of Education, Research Center for Biomedical Materials of Ministry of Education, Key Laboratory of Specially Functional Polymeric Materials and Related Technology (ECUST), Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
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47
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Chandler M, Johnson MB, Panigaj M, Afonin KA. Innate immune responses triggered by nucleic acids inspire the design of immunomodulatory nucleic acid nanoparticles (NANPs). Curr Opin Biotechnol 2019; 63:8-15. [PMID: 31778882 DOI: 10.1016/j.copbio.2019.10.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 10/30/2019] [Indexed: 12/16/2022]
Abstract
The unknown immune stimulation by nucleic acid nanoparticles (NANPs) has become one of the major impediments to a broad spectrum of clinical developments of this novel technology. Having evolved to defend against bacterial and viral nucleic acids, mammalian cells have established patterns of recognition that are also the pathways through which NANPs can be processed. Explorations into the immune stimulation brought about by a vast diversity of known NANPs have shown that variations in design correlate with variations in immune response. Therefore, as the mechanisms of stimulation are further elucidated, these trends are now being taken into account in the design phase to allow for development of NANPs that are tailored for controlled immune activation or quiescence.
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Affiliation(s)
- Morgan Chandler
- Nanoscale Science Program, Department of Chemistry, University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223, USA
| | - Morgan Brittany Johnson
- Department of Biological Sciences, University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223, USA
| | - Martin Panigaj
- Institute of Biology and Ecology, Faculty of Science, Pavol Jozef Safarik University in Kosice, Kosice, 041 54, Slovak Republic
| | - Kirill A Afonin
- Nanoscale Science Program, Department of Chemistry, University of North Carolina at Charlotte, 9201 University City Boulevard, Charlotte, NC 28223, USA; The Center for Biomedical Engineering and Science, University of North Carolina at Charlotte, Charlotte, NC 28223, USA.
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48
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Cytotoxic Curli Intermediates Form during Salmonella Biofilm Development. J Bacteriol 2019; 201:JB.00095-19. [PMID: 31182496 DOI: 10.1128/jb.00095-19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/31/2019] [Indexed: 12/16/2022] Open
Abstract
Enterobacteriaceae produce amyloid proteins called curli that are the major proteinaceous component of biofilms. Amyloids are also produced by humans and are associated with diseases such as Alzheimer's. During the multistep process of amyloid formation, monomeric subunits form oligomers, protofibrils, and finally mature fibrils. Amyloid β oligomers are more cytotoxic to cells than the mature amyloid fibrils. Oligomeric intermediates of curli had not been previously detected. We determined that turbulence inhibited biofilm formation and that, intriguingly, curli aggregates purified from cultures grown under high-turbulence conditions were structurally smaller and contained less DNA than curli preparations from cultures grown with less turbulence. Using flow cytometry analysis, we demonstrated that CsgA was expressed in cultures exposed to higher turbulence but that these cultures had lower levels of cell death than less-turbulent cultures. Our data suggest that the DNA released during cell death drives the formation of larger fibrillar structures. Consistent with this idea, addition of exogenous genomic DNA increased the size of the curli intermediates and led to binding to thioflavin T at levels observed with mature aggregates. Similar to the intermediate oligomers of amyloid β, intermediate curli aggregates were more cytotoxic than the mature curli fibrils when incubated with bone marrow-derived macrophages. The discovery of cytotoxic curli intermediates will enable research into the roles of amyloid intermediates in the pathogenesis of Salmonella and other bacteria that cause enteric infections.IMPORTANCE Amyloid proteins are the major proteinaceous components of biofilms, which are associated with up to 65% of human bacterial infections. Amyloids produced by human cells are also associated with diseases such as Alzheimer's. The amyloid monomeric subunits self-associate to form oligomers, protofibrils, and finally mature fibrils. Amyloid β oligomers are more cytotoxic to cells than the mature amyloid fibrils. Here we detected oligomeric intermediates of curli for the first time. Like the oligomers of amyloid β, intermediate curli fibrils were more cytotoxic than the mature curli fibrillar aggregates when incubated with bone marrow-derived macrophages. The discovery of cytotoxic curli intermediates will enable research into the roles of amyloid intermediates in the pathogenesis of Salmonella and other bacteria that cause enteric infections.
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Juretić D, Simunić J. Design of α-helical antimicrobial peptides with a high selectivity index. Expert Opin Drug Discov 2019; 14:1053-1063. [DOI: 10.1080/17460441.2019.1642322] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Davor Juretić
- Mediterranean Institute for Life Sciences, Split, Croatia
- Department of Physics, Faculty of Science, University of Split, Split, Croatia
| | - Juraj Simunić
- Division of molecular biology, Ruđer Bošković Institute, Zagreb, Croatia
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50
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Lande R, Lee EY, Palazzo R, Marinari B, Pietraforte I, Santos GS, Mattenberger Y, Spadaro F, Stefanantoni K, Iannace N, Dufour AM, Falchi M, Bianco M, Botti E, Bianchi L, Alvarez M, Riccieri V, Truchetet ME, C.L. Wong G, Chizzolini C, Frasca L. CXCL4 assembles DNA into liquid crystalline complexes to amplify TLR9-mediated interferon-α production in systemic sclerosis. Nat Commun 2019; 10:1731. [PMID: 31043596 PMCID: PMC6494823 DOI: 10.1038/s41467-019-09683-z] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 03/23/2019] [Indexed: 01/17/2023] Open
Abstract
Systemic sclerosis (SSc) is a chronic autoimmune disease characterized by fibrosis and vasculopathy. CXCL4 represents an early serum biomarker of severe SSc and likely contributes to inflammation via chemokine signaling pathways, but the exact role of CXCL4 in SSc pathogenesis is unclear. Here, we elucidate an unanticipated mechanism for CXCL4-mediated immune amplification in SSc, in which CXCL4 organizes "self" and microbial DNA into liquid crystalline immune complexes that amplify TLR9-mediated plasmacytoid dendritic cell (pDC)-hyperactivation and interferon-α production. Surprisingly, this activity does not require CXCR3, the CXCL4 receptor. Importantly, we find that CXCL4-DNA complexes are present in vivo and correlate with type I interferon (IFN-I) in SSc blood, and that CXCL4-positive skin pDCs coexpress IFN-I-related genes. Thus, we establish a direct link between CXCL4 overexpression and the IFN-I-gene signature in SSc and outline a paradigm in which chemokines can drastically modulate innate immune receptors without being direct agonists.
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Affiliation(s)
- Roberto Lande
- National Center for Drug Research and Evaluation, Pharmacological research and experimental therapy UNIT, Istituto Superiore di Sanità (ISS), 00161 Rome, Italy
| | - Ernest Y. Lee
- Department of Bioengineering, Department of Chemistry & Biochemistry, and California NanoSystems Institute, University of California, Los Angeles, CA 90095 USA
| | - Raffaella Palazzo
- National Center for Drug Research and Evaluation, Pharmacological research and experimental therapy UNIT, Istituto Superiore di Sanità (ISS), 00161 Rome, Italy
| | - Barbara Marinari
- Dermatology Unit, Department of Systems Medicine, University of Tor Vergata, Rome, 00133 Italy
| | - Immacolata Pietraforte
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Giancarlo Santiago Santos
- Department of Bioengineering, Department of Chemistry & Biochemistry, and California NanoSystems Institute, University of California, Los Angeles, CA 90095 USA
| | - Yves Mattenberger
- Department of Microbiol and Molecular Medicine, University of Geneva, CH-1211 Geneva, Switzerland
| | - Francesca Spadaro
- Istituto Superiore di Sanità, Confocal Microscopy Unit, Core Facilities, Rome, 00161 Italy
| | - Katia Stefanantoni
- Division of Rheumatology, Internal Medicine and Medical Specialties, University La Sapienza, 00161 Rome, Italy
| | - Nicoletta Iannace
- Division of Rheumatology, Internal Medicine and Medical Specialties, University La Sapienza, 00161 Rome, Italy
| | - Aleksandra Maria Dufour
- Immunology & Allergy and Immunology & Pathology, University Hospital and School of Medicine, CH-1211 Geneva, Switzerland
| | - Mario Falchi
- Istituto Superiore di Sanità, National AIDS Center, Rome, 00161 Italy
| | - Manuela Bianco
- National Center for Drug Research and Evaluation, Pharmacological research and experimental therapy UNIT, Istituto Superiore di Sanità (ISS), 00161 Rome, Italy
| | - Elisabetta Botti
- Dermatology Unit, Department of Systems Medicine, University of Tor Vergata, Rome, 00133 Italy
| | - Luca Bianchi
- Dermatology Unit, Department of Systems Medicine, University of Tor Vergata, Rome, 00133 Italy
| | - Montserrat Alvarez
- Immunology & Allergy and Immunology & Pathology, University Hospital and School of Medicine, CH-1211 Geneva, Switzerland
| | - Valeria Riccieri
- Division of Rheumatology, Internal Medicine and Medical Specialties, University La Sapienza, 00161 Rome, Italy
| | - Marie-Elise Truchetet
- Division of Rheumatology and immunoConcept, University Hospital, Bordeaux, 33076 France
| | - Gerard C.L. Wong
- Department of Bioengineering, Department of Chemistry & Biochemistry, and California NanoSystems Institute, University of California, Los Angeles, CA 90095 USA
| | - Carlo Chizzolini
- Immunology & Allergy and Immunology & Pathology, University Hospital and School of Medicine, CH-1211 Geneva, Switzerland
| | - Loredana Frasca
- National Center for Drug Research and Evaluation, Pharmacological research and experimental therapy UNIT, Istituto Superiore di Sanità (ISS), 00161 Rome, Italy
- Immunology & Allergy and Immunology & Pathology, University Hospital and School of Medicine, CH-1211 Geneva, Switzerland
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