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Umumararungu T, Gahamanyi N, Mukiza J, Habarurema G, Katandula J, Rugamba A, Kagisha V. Proline, a unique amino acid whose polymer, polyproline II helix, and its analogues are involved in many biological processes: a review. Amino Acids 2024; 56:50. [PMID: 39182198 PMCID: PMC11345334 DOI: 10.1007/s00726-024-03410-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 08/06/2024] [Indexed: 08/27/2024]
Abstract
Proline is a unique amino acid in that its side-chain is cyclised to the backbone, thus giving proline an exceptional rigidity and a considerably restricted conformational space. Polyproline forms two well-characterized helical structures: a left-handed polyproline helix (PPII) and a right-handed polyproline helix (PPI). Usually, sequences made only of prolyl residues are in PPII conformation, but even sequences not rich in proline but which are rich in glycine, lysine, glutamate, or aspartate have also a tendency to form PPII helices. Currently, the only way to study unambiguously PPII structure in solution is to use spectroscopies based on optical activity such as circular dichroism, vibrational circular dichroism and Raman optical activity. The importance of the PPII structure is emphasized by its ubiquitous presence in different organisms from yeast to human beings where proline-rich motifs and their binding domains are believed to be involved in vital biological processes. Some of the domains that are bound by proline-rich motifs include SH3 domains, WW domains, GYF domains and UEV domains, etc. The PPII structure has been demonstrated to be essential to biological activities such as signal transduction, transcription, cell motility, and immune response.
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Affiliation(s)
- Théoneste Umumararungu
- Department of Industrial Pharmacy, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda.
| | - Noël Gahamanyi
- Department of Biology, School of Science, College of Science and Technology, University of Rwanda, Kigali, Rwanda
- Rwanda Biomedical Center, Microbiology Unit, National Reference Laboratory, Kigali, Rwanda
| | - Janvier Mukiza
- Rwanda Food and Drugs Authority, Nyarutarama Plaza, KG 9 Avenue, Kigali, Rwanda
| | - Gratien Habarurema
- Department of Chemistry, School of Science, College of Science and Technology, University of Rwanda, Kigali, Rwanda
| | - Jonathan Katandula
- Department of Pharmacology and Toxicology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda
| | - Alexis Rugamba
- Department of Biochemistry, Molecular Biology and Genetics, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda
| | - Vedaste Kagisha
- Department of Pharmaceuticals and Biomolecules Analysis, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda
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2
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Tang Y, Qu S, Ning Z, Wu H. Immunopeptides: immunomodulatory strategies and prospects for ocular immunity applications. Front Immunol 2024; 15:1406762. [PMID: 39076973 PMCID: PMC11284077 DOI: 10.3389/fimmu.2024.1406762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 07/01/2024] [Indexed: 07/31/2024] Open
Abstract
Immunopeptides have low toxicity, low immunogenicity and targeting, and broad application prospects in drug delivery and assembly, which are diverse in application strategies and drug combinations. Immunopeptides are particularly important for regulating ocular immune homeostasis, as the eye is an immune-privileged organ. Immunopeptides have advantages in adaptive immunity and innate immunity, treating eye immune-related diseases by regulating T cells, B cells, immune checkpoints, and cytokines. This article summarizes the application strategies of immunopeptides in innate immunity and adaptive immunity, including autoimmunity, infection, vaccine strategies, and tumors. Furthermore, it focuses on the mechanisms of immunopeptides in mediating ocular immunity (autoimmune diseases, inflammatory storms, and tumors). Moreover, it reviews immunopeptides' application strategies and the therapeutic potential of immunopeptides in the eye. We expect the immune peptide to get attention in treating eye diseases and to provide a direction for eye disease immune peptide research.
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Affiliation(s)
| | | | | | - Hong Wu
- Eye Center of Second Hospital of Jilin University, Changchun, China
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3
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Li X, Su N, Yu H, Li X, Sun SL. Hainanenin-1, an oncolytic peptide, triggers immunogenic cell death via STING activation in triple-negative breast cancer. Cell Commun Signal 2024; 22:352. [PMID: 38970078 PMCID: PMC11225514 DOI: 10.1186/s12964-024-01731-6] [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: 04/11/2024] [Accepted: 06/30/2024] [Indexed: 07/07/2024] Open
Abstract
BACKGROUND In triple-negative breast cancer (TNBC) therapy, insufficient tumor infiltration by lymphocytes significantly hinders the efficacy of immune checkpoint inhibitors. We have previously demonstrated that Hainanenin-1 (HN-1), a host defense peptide (HDP) identified from Hainan frog skin, induces breast cancer apoptosis and boots anti-tumor immunity via unknown mechanism. METHODS We used in vitro experiments to observe immunogenic cell death (ICD) indicators in HN-1-treated TNBC cell lines, a mouse tumor model to verify HN-1 promotion of mice anti-tumor immune response, and an in vitro drug sensitivity test of patient-derived breast cancer cells to verify the inhibitory effect of HN-1. RESULTS HN-1 induced ICD in TNBC in a process during which damage-associated molecular patterns (DAMPs) were released that could further increase the anti-tumor immune response. The secretion level of interleukin 2 (IL-2), IL-12, and interferon γ in the co-culture supernatant was increased, and dendritic cells (DCs) were activated via a co-culture with HN-1-pretreated TNBC cells. As a result, HN-1 increased the infiltration of anti-tumor immune cells (DCs and T lymphocytes) in the mouse model bearing both 4T1 and EMT6 tumors. Meanwhile, regulatory T cells and myeloid-derived suppressor cells were suppressed. In addition, HN-1 induced DNA damage, and double-strand DNA release in the cytosol was significantly enhanced, indicating that HN-1 might stimulate ICD via activation of STING pathway. The knockdown of STING inhibited HN-1-induced ICD. Of note, HN-1 exhibited inhibitory effects on patient-derived breast cancer cells under three-dimensional culture conditions. CONCLUSIONS Collectively, our study demonstrated that HN-1 could be utilized as a potential compound that might augment immunotherapy effects in patients with TNBC.
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Affiliation(s)
- Xiaoxi Li
- Central Laboratory, Cancer Hospital of Dalian University of Technology, Cancer Hospital of China Medical University (Liaoning Cancer Hospital & Institute), Shenyang, Liaoning, 110042, P. R. China
| | - Nan Su
- Central Laboratory, Cancer Hospital of Dalian University of Technology, Cancer Hospital of China Medical University (Liaoning Cancer Hospital & Institute), Shenyang, Liaoning, 110042, P. R. China
| | - Haining Yu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, 116024, P. R. China.
| | - Xiaoyan Li
- Department of Pathology, Cancer Hospital of Dalian University of Technology, Cancer Hospital of China Medical University (Liaoning Cancer Hospital & Institute), Shenyang, Liaoning, 110042, P. R. China.
| | - Shu-Lan Sun
- Central Laboratory, Cancer Hospital of Dalian University of Technology (Liaoning Cancer Hospital & Institute), Shenyang, Liaoning, 110042, P. R. China.
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4
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Yang F, Yang F, Huang J, Yu H, Qiao S. Microcin C7 as a Potential Antibacterial-Immunomodulatory Agent in the Postantibiotic Era: Overview of Its Bioactivity Aspects and Applications. Int J Mol Sci 2024; 25:7213. [PMID: 39000321 PMCID: PMC11241378 DOI: 10.3390/ijms25137213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/16/2024] Open
Abstract
In the postantibiotic era, the pathogenicity and resistance of pathogens have increased, leading to an increase in intestinal inflammatory disease. Bacterial infections remain the leading cause of animal mortality. With increasing resistance to antibiotics, there has been a significant decrease in resistance to both inflammation and disease in animals, thus decreasing production efficiency and increasing production costs. These side effects have serious consequences and have detracted from the development of China's pig industry. Microcin C7 (McC7) demonstrates potent antibacterial activity against a broad spectrum of pathogens, stable physicochemical properties, and low toxicity, reducing the likelihood of resistance development. Thus, McC7 has received increasing attention as a potential clinical antibacterial and immunomodulatory agent. McC7 has the potential to serve as a new generation of antibiotic substitutes; however, its commercial applications in the livestock and poultry industry have been limited. In this review, we summarize and discuss the biosynthesis, biochemical properties, structural characteristics, mechanism of action, and immune strategies of McC7. We also describe the ability of McC7 to improve intestinal health. Our aim in this study was to provide a theoretical basis for the application of McC7 as a new feed additive or new veterinary drug in the livestock and poultry breeding industry, thus providing a new strategy for alleviating resistance through feed and mitigating drug resistance. Furthermore, this review provides insight into the new functions and anti-infection mechanisms of bacteriocin peptides and proposes crucial ideas for the research, product development, and application of bacteriocin peptides in different fields, such as the food and medical industries.
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Affiliation(s)
- Fengjuan Yang
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Biofeed Additives Key Laboratory, Beijing 100193, China
| | - Feiyun Yang
- Chongqing Academy of Animal Science, Rongchang, Chongqing 402460, China
- National Center of Technology Innovation for Pigs, Rongchang, Chongqing 402460, China
| | - Jinxiu Huang
- Chongqing Academy of Animal Science, Rongchang, Chongqing 402460, China
- National Center of Technology Innovation for Pigs, Rongchang, Chongqing 402460, China
| | - Haitao Yu
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Biofeed Additives Key Laboratory, Beijing 100193, China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition and Feeding, Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing 100193, China
- Beijing Biofeed Additives Key Laboratory, Beijing 100193, China
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5
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Esposito TVF, Blackadar C, Wu L, Rodríguez-Rodríguez C, Haney EF, Pletzer D, Saatchi K, Hancock REW, Häfeli UO. Biodistribution of Native and Nanoformulated Innate Defense Regulator Peptide 1002. Mol Pharm 2024; 21:2751-2766. [PMID: 38693707 DOI: 10.1021/acs.molpharmaceut.3c01169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Innate defense regulator-1002 (IDR-1002) is a synthetic peptide with promising immunomodulatory and antibiofilm properties. An appreciable body of work exists around its mechanism of action at the cellular and molecular level, along with its efficacy across several infection and inflammation models. However, little is known about its absorption, distribution, and excretion in live organisms. Here, we performed a comprehensive biodistribution assessment with a gallium-67 radiolabeled derivative of IDR-1002 using nuclear tracing techniques. Various dose levels of the radiotracer (2-40 mg/kg) were administered into the blood, peritoneal cavity, and subcutaneous tissue, or instilled into the lungs. The peptide was well tolerated at all subcutaneous and intraperitoneal doses, although higher levels were associated with delayed absorption kinetics and precipitation of the peptide within the tissues. Low intratracheal doses were rapidly absorbed systemically, and small increases in the dose level were lethal. Intravenous doses were rapidly cleared from the blood at lower levels, and upon escalation, were toxic with a high proportion of the dose accumulating within the lung tissue. To improve biocompatibility and prolong its circulation within the blood, IDR-1002 was further formulated onto high molecular weight hyperbranched polyglycerol (HPG) polymers. Constructs prepared at 5:1 and 10:1 peptide-to-polymer ratios were colloidally stable, maintained the biological profile of the peptide payload and helped reduce red blood cell lysis. The 5:1 construct circulated well in the blood, but higher peptide loading was associated with rapid clearance by the reticuloendothelial system. Many peptides face pharmacokinetic and biocompatibility challenges, but formulations such as those with HPG have the potential to overcome these limitations.
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Affiliation(s)
- Tullio V F Esposito
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Colin Blackadar
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Lan Wu
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Wuya College of Innovation, Shenyang Pharmaceutical University, Wenhua Road No. 103, Shenyang 110016, China
| | - Cristina Rodríguez-Rodríguez
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Department of Physics and Astronomy, Faculty of Science, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Evan F Haney
- Centre for Microbial Disease and Immunity Research, Department of Microbiology and Immunology, Faculty of Science, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Asep Medical Holdings, 420 - 730 View Street, Victoria V8W 3Y7, British Columbia, Canada
| | - Daniel Pletzer
- Centre for Microbial Disease and Immunity Research, Department of Microbiology and Immunology, Faculty of Science, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Department of Microbiology and Immunology, University of Otago, Dunedin 9054, New Zealand
| | - Katayoun Saatchi
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Robert E W Hancock
- Centre for Microbial Disease and Immunity Research, Department of Microbiology and Immunology, Faculty of Science, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
| | - Urs O Häfeli
- Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver V6T 1Z4, British Columbia, Canada
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 1172, Denmark
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Lebedev M, Benjamin AB, Kumar S, Molchanova N, Lin JS, Koster KJ, Leibowitz JL, Barron AE, Cirillo JD. Antiviral Effect of Antimicrobial Peptoid TM9 and Murine Model of Respiratory Coronavirus Infection. Pharmaceutics 2024; 16:464. [PMID: 38675125 PMCID: PMC11054490 DOI: 10.3390/pharmaceutics16040464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 04/28/2024] Open
Abstract
New antiviral agents are essential to improving treatment and control of SARS-CoV-2 infections that can lead to the disease COVID-19. Antimicrobial peptoids are sequence-specific oligo-N-substituted glycine peptidomimetics that emulate the structure and function of natural antimicrobial peptides but are resistant to proteases. We demonstrate antiviral activity of a new peptoid (TM9) against the coronavirus, murine hepatitis virus (MHV), as a closely related model for the structure and antiviral susceptibility profile of SARS-CoV-2. This peptoid mimics the human cathelicidin LL-37, which has also been shown to have antimicrobial and antiviral activity. In this study, TM9 was effective against three murine coronavirus strains, demonstrating that the therapeutic window is large enough to allow the use of TM9 for treatment. All three isolates of MHV generated infection in mice after 15 min of exposure by aerosol using the Madison aerosol chamber, and all three viral strains could be isolated from the lungs throughout the 5-day observation period post-infection, with the peak titers on day 2. MHV-A59 and MHV-A59-GFP were also isolated from the liver, heart, spleen, olfactory bulbs, and brain. These data demonstrate that MHV serves as a valuable natural murine model of coronavirus pathogenesis in multiple organs, including the brain.
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Affiliation(s)
- Maxim Lebedev
- School of Medicine, Texas A&M University, Bryan, TX 77807, USA; (M.L.); (A.B.B.); (S.K.); (K.J.K.); (J.L.L.)
| | - Aaron B. Benjamin
- School of Medicine, Texas A&M University, Bryan, TX 77807, USA; (M.L.); (A.B.B.); (S.K.); (K.J.K.); (J.L.L.)
| | - Sathish Kumar
- School of Medicine, Texas A&M University, Bryan, TX 77807, USA; (M.L.); (A.B.B.); (S.K.); (K.J.K.); (J.L.L.)
| | - Natalia Molchanova
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA; (N.M.); (J.S.L.); (A.E.B.)
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jennifer S. Lin
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA; (N.M.); (J.S.L.); (A.E.B.)
| | - Kent J. Koster
- School of Medicine, Texas A&M University, Bryan, TX 77807, USA; (M.L.); (A.B.B.); (S.K.); (K.J.K.); (J.L.L.)
| | - Julian L. Leibowitz
- School of Medicine, Texas A&M University, Bryan, TX 77807, USA; (M.L.); (A.B.B.); (S.K.); (K.J.K.); (J.L.L.)
| | - Annelise E. Barron
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA; (N.M.); (J.S.L.); (A.E.B.)
| | - Jeffrey D. Cirillo
- School of Medicine, Texas A&M University, Bryan, TX 77807, USA; (M.L.); (A.B.B.); (S.K.); (K.J.K.); (J.L.L.)
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Gao N, Wang J, Fang C, Bai P, Sun Y, Wu W, Shan A. Combating bacterial infections with host defense peptides: Shifting focus from bacteria to host immunity. Drug Resist Updat 2024; 72:101030. [PMID: 38043443 DOI: 10.1016/j.drup.2023.101030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/12/2023] [Accepted: 11/26/2023] [Indexed: 12/05/2023]
Abstract
The increasing prevalence of multidrug-resistant bacterial infections necessitates the exploration of novel paradigms for anti-infective therapy. Antimicrobial peptides (AMPs), also known as host defense peptides (HDPs), have garnered extensive recognition as immunomodulatory molecules that leverage natural host mechanisms to enhance therapeutic benefits. The unique immune mechanism exhibited by certain HDPs that involves self-assembly into supramolecular nanonets capable of inducing bacterial agglutination and entrapping is significantly important. This process effectively prevents microbial invasion and subsequent dissemination and significantly mitigates selective pressure for the evolution of microbial resistance, highlighting the potential of HDP-based antimicrobial therapy. Recent advancements in this field have focused on developing bio-responsive materials in the form of supramolecular nanonets. A comprehensive overview of the immunomodulatory and bacteria-agglutinating activities of HDPs, along with a discussion on optimization strategies for synthetic derivatives, is presented in this article. These optimized derivatives exhibit improved biological properties and therapeutic potential, making them suitable for future clinical applications as effective anti-infective therapeutics.
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Affiliation(s)
- Nan Gao
- Animal Science and Technology College, Northeast Agricultural University, Harbin 150030, PR China
| | - Jiajun Wang
- Animal Science and Technology College, Northeast Agricultural University, Harbin 150030, PR China.
| | - Chunyang Fang
- Animal Science and Technology College, Northeast Agricultural University, Harbin 150030, PR China
| | - Pengfei Bai
- Animal Science and Technology College, Northeast Agricultural University, Harbin 150030, PR China
| | - Yu Sun
- Animal Science and Technology College, Northeast Agricultural University, Harbin 150030, PR China
| | - Wanpeng Wu
- Animal Science and Technology College, Northeast Agricultural University, Harbin 150030, PR China
| | - Anshan Shan
- Animal Science and Technology College, Northeast Agricultural University, Harbin 150030, PR China.
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8
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Connors J, Cusimano G, Mege N, Woloszczuk K, Konopka E, Bell M, Joyner D, Marcy J, Tardif V, Kutzler MA, Muir R, Haddad EK. Using the power of innate immunoprofiling to understand vaccine design, infection, and immunity. Hum Vaccin Immunother 2023; 19:2267295. [PMID: 37885158 PMCID: PMC10760375 DOI: 10.1080/21645515.2023.2267295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/03/2023] [Indexed: 10/28/2023] Open
Abstract
In the field of immunology, a systems biology approach is crucial to understanding the immune response to infection and vaccination considering the complex interplay between genetic, epigenetic, and environmental factors. Significant progress has been made in understanding the innate immune response, including cell players and critical signaling pathways, but many questions remain unanswered, including how the innate immune response dictates host/pathogen responses and responses to vaccines. To complicate things further, it is becoming increasingly clear that the innate immune response is not a linear pathway but is formed from complex networks and interactions. To further our understanding of the crosstalk and complexities, systems-level analyses and expanded experimental technologies are now needed. In this review, we discuss the most recent immunoprofiling techniques and discuss systems approaches to studying the global innate immune landscape which will inform on the development of personalized medicine and innovative vaccine strategies.
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Affiliation(s)
- Jennifer Connors
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, USA
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Gina Cusimano
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, USA
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Nathan Mege
- Tower Health, Reading Hospital, West Reading, PA, USA
| | - Kyra Woloszczuk
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, USA
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Emily Konopka
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, USA
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Matthew Bell
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, USA
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - David Joyner
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
- Department of Molecular and Cellular Biology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Jennifer Marcy
- Department of Molecular and Cellular Biology, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Virginie Tardif
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Michele A. Kutzler
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, USA
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Roshell Muir
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
- Department of Family, Community, and Preventative Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
| | - Elias K. Haddad
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, PA, USA
- Department of Medicine, Division of Infectious Diseases and HIV Medicine, Drexel University College of Medicine, Philadelphia, PA, USA
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9
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He Y, Shen Y, Feng X, Ruan S, Zhao Y, Mu L, Wu J, Yang H. Tree Frog-Derived Cathelicidin Protects Mice against Bacterial Infection through Its Antimicrobial and Anti-Inflammatory Activities and Regulatory Effect on Phagocytes. ACS Infect Dis 2023; 9:2252-2268. [PMID: 37855266 DOI: 10.1021/acsinfecdis.3c00316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
Due to excessive use or abuse in the food industry, agriculture, and medicine, many pathogens are developing resistance against conventional antibiotics. Antimicrobial peptides (AMPs) hold promise as effective therapeutic options for the treatment of bacterial infections. Herein, a novel cathelicidin antimicrobial peptide (Zs-CATH) was identified from the tree frog Zhangixalus smaragdinus. Zs-CATH mainly adopted an amphipathic β-sheet structure in a membrane-mimetic environment. It showed broad-spectrum antibacterial activity against Gram-positive and Gram-negative bacteria in vitro and significantly protected mice from lethal infections induced by Gram-negative bacteria Escherichia coli ATCC 25922 or Gram-positive bacteria Staphylococcus aureus ATCC 25923 in vivo. In addition, Zs-CATH exerted a strong anti-inflammatory effect by neutralizing lipopolysaccharide (LPS) and lipoteichoic acid (LTA) and promoting macrophage M2 polarization, thus inhibiting the secretion of proinflammatory cytokines (TNF-α, IL-6, and IL-1β) and enhancing the production of M2 macrophage markers IL-10, IL-4, and CD206. The MAPK and NF-κB inflammatory signaling pathways and transcriptional activator 6 (STAT6) were involved in this effect. In mice, Zs-CATH rapidly recruited neutrophils and monocytes/macrophages to the abdominal cavity but not T and B lymphocytes. Zs-CATH did not exhibit a direct chemoattractant effect on phagocytes but significantly promoted phagocyte migration in the presence of macrophages. Zs-CATH stimulated macrophages to secrete chemokines CXCL1, CXCL2, and CCL2, which mediated the recruitment of phagocytes. Furthermore, Zs-CATH promoted the production of reactive oxygen species (ROS) and neutrophil extracellular traps (NETs), which are oxygen-dependent and oxygen-independent mechanisms of the microbicidal activity of neutrophils, respectively. Zs-CATH exhibited no toxic side effects on mammalian cells and mice. These findings show that in addition to direct antibacterial activity, Zs-CATH also possesses the ability to modulate immune and inflammatory processes during bacterial infection, showing potential for development as anti-infective and/or anti-inflammatory agents.
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Affiliation(s)
- Yanmei He
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Yan Shen
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Xiaoli Feng
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Shimei Ruan
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Yingying Zhao
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Lixian Mu
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Jing Wu
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Hailong Yang
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
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10
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Podolnikova NP, Lishko VK, Roberson R, Koh Z, Derkach D, Richardson D, Sheller M, Ugarova TP. Platelet factor 4 improves survival in a murine model of antibiotic-susceptible and methicillin-resistant Staphylococcus aureus peritonitis. Front Cell Infect Microbiol 2023; 13:1217103. [PMID: 37868353 PMCID: PMC10585365 DOI: 10.3389/fcimb.2023.1217103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 09/13/2023] [Indexed: 10/24/2023] Open
Abstract
The complement receptor CR3, also known as integrin Mac-1 (CD11b/CD18), is one of the major phagocytic receptors on the surface of neutrophils and macrophages. We previously demonstrated that in its protein ligands, Mac-1 binds sequences enriched in basic and hydrophobic residues and strongly disfavors negatively charged sequences. The avoidance by Mac-1 of negatively charged surfaces suggests that the bacterial wall and bacterial capsule possessing net negative electrostatic charge may repel Mac-1 and that the cationic Mac-1 ligands can overcome this evasion by acting as opsonins. Indeed, we previously showed that opsonization of Gram-negative Escherichia coli with several cationic peptides, including PF4 (Platelet Factor 4), strongly augmented phagocytosis by macrophages. Here, we investigated the effect of recombinant PF4 (rPF4) on phagocytosis of Gram-positive Staphylococcus aureus in vitro and examined its impact in a mouse model of S. aureus peritonitis. Characterization of the interaction of rPF4 with nonencapsulated and encapsulated S. aureus showed that rPF4 localizes on the bacterial surface, thus making it available for Mac-1. Furthermore, rPF4 did not have direct bactericidal and bacteriostatic activity and was not toxic to host cells. rPF4 enhanced phagocytosis of S. aureus bioparticles by various primary and cultured Mac-1-expressing leukocytes by several folds. It also increased phagocytosis of live nonencapsulated and encapsulated bacteria. Notably, the augmentation of phagocytosis by rPF4 did not compromise the intracellular killing of S. aureus by macrophages. Using a murine S. aureus peritonitis model, we showed that treatment of infected mice with rPF4 caused a significant increase in the clearance of antibiotic-susceptible S. aureus and its methicillin-resistant (MRSA) variant and markedly improved survival. These findings indicate that rPF4 binding to the bacterial surface circumvents its antiphagocytic properties, improving host defense against antibiotic-susceptible and antibiotic-resistant bacteria.
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Affiliation(s)
| | - Valeryi K. Lishko
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | - Robert Roberson
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | - Zhiqian Koh
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | | | | | - Michael Sheller
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
| | - Tatiana P. Ugarova
- School of Life Sciences, Arizona State University, Tempe, AZ, United States
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11
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Sebők C, Tráj P, Mackei M, Márton RA, Vörösházi J, Kemény Á, Neogrády Z, Mátis G. Modulation of the immune response by the host defense peptide IDR-1002 in chicken hepatic cell culture. Sci Rep 2023; 13:14530. [PMID: 37666888 PMCID: PMC10477227 DOI: 10.1038/s41598-023-41707-z] [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: 02/15/2023] [Accepted: 08/30/2023] [Indexed: 09/06/2023] Open
Abstract
IDR-1002, a synthetic host defense peptide (HDP), appears to be a potential candidate for the treatment of bacterial infections and the consequent inflammatory response due to its potent immunomodulatory activity. This is of relevance to the emerging issue of antimicrobial resistance in the farming sector. In this study, the effects of IDR-1002 were investigated on a chicken hepatocyte‒non-parenchymal cell co-culture, and the results revealed that IDR-1002 had complex effects on the regulation of the hepatic innate immunity. IDR-1002 increased the levels of both RANTES (Regulated on Activation, Normal T cell Expressed and Secreted) and Macrophage colony stimulating factor (M-CSF), suggesting the peptide plays a role in the modulation of macrophage differentiation, also reflected by the reduced concentrations of interleukin (IL)-6 and IL-10. The pro-inflammatory cytokine release triggered by the bacterial cell wall component lipoteichoic acid (LTA) was ameliorated by the concomitantly applied IDR-1002 based on the levels of IL-6, chicken chemotactic and angiogenic factor (CXCLi2) and interferon (IFN)-γ. Moreover, the production of nuclear factor erythroid 2-related factor 2 (Nrf2), an essential transcription factor in the antioxidant defense pathway, was increased after IDR-1002 exposure, while protein carbonyl (PC) levels were also elevated. These findings suggest that IDR-1002 affects the interplay of the cellular immune response and redox homeostasis, thus the peptide represents a promising tool in the treatment of bacterially induced inflammation in chickens.
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Affiliation(s)
- Csilla Sebők
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, 1078, Budapest, Hungary.
| | - Patrik Tráj
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, 1078, Budapest, Hungary
| | - Máté Mackei
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, 1078, Budapest, Hungary
| | - Rege Anna Márton
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, 1078, Budapest, Hungary
| | - Júlia Vörösházi
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, 1078, Budapest, Hungary
| | - Ágnes Kemény
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Pécs, Szigeti u. 12, 7624, Pécs, Hungary
- Department of Medical Biology, Faculty of Medicine, University of Pécs, Szigeti u. 12, 7624, Pécs, Hungary
| | - Zsuzsanna Neogrády
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, 1078, Budapest, Hungary
| | - Gábor Mátis
- Division of Biochemistry, Department of Physiology and Biochemistry, University of Veterinary Medicine, István utca 2, 1078, Budapest, Hungary
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12
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Podolnikova NP, Lishko VK, Roberson R, Koh Z, Derkach D, Richardson D, Sheller M, Ugarova TP. PLATELET FACTOR 4 (PF4) IMPROVES SURVIVAL IN A MURINE MODEL OF ANTIBIOTIC-SUSCEPTIBLE AND METHICILLIN-RESISTANT STAPHYLOCOCCUS AUREUS PERITONITIS. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.25.554865. [PMID: 37662328 PMCID: PMC10473751 DOI: 10.1101/2023.08.25.554865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
The complement receptor CR3, also known as integrin Mac-1 (CD11b/CD18), is one of the major phagocytic receptors on the surface of neutrophils and macrophages. We previously demonstrated that in its protein ligands, Mac-1 binds sequences enriched in basic and hydrophobic residues and strongly disfavors negatively charged sequences. The avoidance by Mac-1 of negatively charged surfaces suggests that the bacterial wall and bacterial capsule possessing net negative electrostatic charge may repel Mac-1 and that the cationic Mac-1 ligands can overcome this evasion by acting as opsonins. Indeed, we previously showed that opsonization of Gram-negative Escherichia coli with several cationic peptides, including PF4 (Platelet Factor 4), strongly augmented phagocytosis by macrophages. Here, we investigated the effect of recombinant PF4 (rPF4) on phagocytosis of Gram-positive Staphylococcus aureus in vitro and examined its impact in a mouse model of S. aureus peritonitis. Characterization of the interaction of rPF4 with nonencapsulated and encapsulated S. aureus showed that rPF4 localizes on the bacterial surface, thus making it available for Mac-1. Furthermore, rPF4 did not have direct bactericidal and bacteriostatic activity and was not toxic to host cells. rPF4 enhanced phagocytosis of S. aureus bioparticles by various primary and cultured Mac-1-expressing leukocytes by several folds. It also increased phagocytosis of live nonencapsulated and encapsulated bacteria. Notably, the augmentation of phagocytosis by rPF4 did not compromise the intracellular killing of S. aureus by macrophages. Using a murine S. aureus peritonitis model, we showed that treatment of infected mice with rPF4 caused a significant increase in the clearance of antibiotic-susceptible S. aureus and its methicillin-resistant (MRSA) variant and markedly improved survival. These findings indicate that rPF4 binding to the bacterial surface circumvents its antiphagocytic properties, improving host defense against antibiotic-susceptible and antibiotic-resistant bacteria.
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Affiliation(s)
| | | | - Robert Roberson
- School of Life Sciences, Arizona State University, Tempe, AZ 85287
| | - Zhqian Koh
- School of Life Sciences, Arizona State University, Tempe, AZ 85287
| | | | | | - Michael Sheller
- School of Life Sciences, Arizona State University, Tempe, AZ 85287
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13
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Mo X, Zhao S, Zhao J, Huang Y, Li T, Zhu Y, Li G, Li Y, Shan H. Targeting collagen damage for sustained in situ antimicrobial activities. J Control Release 2023; 360:122-132. [PMID: 37321327 DOI: 10.1016/j.jconrel.2023.06.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 05/26/2023] [Accepted: 06/11/2023] [Indexed: 06/17/2023]
Abstract
Antimicrobial peptides (AMPs) are promising anti-infective drugs, but their use is restricted by their short-term retention at the infection site, non-targeted uptake, and adverse effects on normal tissues. Since infection often follows an injury (e.g., in a wound bed), directly immobilizing AMPs to the damaged collagenous matrix of the injured tissues may help overcome these limitations by transforming the extracellular matrix microenvironment of the infection site into a natural reservoir of AMPs for sustained in situ release. Here, we developed and demonstrated an AMP-delivery strategy by conjugating a dimeric construct of AMP Feleucin-K3 (Flc) and a collagen hybridizing peptide (CHP), which enabled selective and prolonged anchoring of the Flc-CHP conjugate to the damaged and denatured collagen in the infected wounds in vitro and in vivo. We found that the dimeric Flc and CHP conjugate design preserved the potent and broad-spectrum antimicrobial activities of Flc while significantly enhancing and extending its antimicrobial efficacy in vivo and facilitating tissue repair in a rat wound healing model. Because collagen damage is ubiquitous in almost all injuries and infections, our strategy of targeting collagen damage may open up new avenues for antimicrobial treatments in a range of infected tissues.
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Affiliation(s)
- Xiaoyun Mo
- Guangdong Provincial Engineering Research Center of Molecular Imaging, Cardiac Surgery and Structural Heart Disease Unit of Cardiovascular Center, and Department of Radiology, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - Suwen Zhao
- Guangdong Provincial Engineering Research Center of Molecular Imaging, Cardiac Surgery and Structural Heart Disease Unit of Cardiovascular Center, and Department of Radiology, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - Jie Zhao
- Guangdong Provincial Engineering Research Center of Molecular Imaging, Cardiac Surgery and Structural Heart Disease Unit of Cardiovascular Center, and Department of Radiology, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - Yongjie Huang
- Guangdong Provincial Engineering Research Center of Molecular Imaging, Cardiac Surgery and Structural Heart Disease Unit of Cardiovascular Center, and Department of Radiology, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - Tao Li
- Guangdong Provincial Engineering Research Center of Molecular Imaging, Cardiac Surgery and Structural Heart Disease Unit of Cardiovascular Center, and Department of Radiology, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - Yongqiao Zhu
- Guangdong Provincial Engineering Research Center of Molecular Imaging, Cardiac Surgery and Structural Heart Disease Unit of Cardiovascular Center, and Department of Radiology, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - Gang Li
- Guangdong Provincial Engineering Research Center of Molecular Imaging, Cardiac Surgery and Structural Heart Disease Unit of Cardiovascular Center, and Department of Radiology, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - Yang Li
- Guangdong Provincial Engineering Research Center of Molecular Imaging, Cardiac Surgery and Structural Heart Disease Unit of Cardiovascular Center, and Department of Radiology, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China.
| | - Hong Shan
- Guangdong Provincial Engineering Research Center of Molecular Imaging, Cardiac Surgery and Structural Heart Disease Unit of Cardiovascular Center, and Department of Radiology, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China; Department of Interventional Medicine, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China.
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14
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Dhiman A, Talukdar S, Chaubey GK, Dilawari R, Modanwal R, Chaudhary S, Patidar A, Boradia VM, Kumbhar P, Raje CI, Raje M. Regulation of Macrophage Cell Surface GAPDH Alters LL-37 Internalization and Downstream Effects in the Cell. J Innate Immun 2023; 15:581-598. [PMID: 37080180 PMCID: PMC10315065 DOI: 10.1159/000530083] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 03/03/2023] [Indexed: 04/22/2023] Open
Abstract
Mycobacterium tuberculosis (M.tb), the major causative agent of tuberculosis, has evolved mechanisms to evade host defenses and persist within host cells. Host-directed therapies against infected cells are emerging as an effective option. Cationic host defense peptide LL-37 is known to internalize into cells and induce autophagy resulting in intracellular killing of M.tb. This peptide also regulates the immune system and interacts with the multifunctional protein glyceraldehyde-3-phosphate dehydrogenase (GAPDH) inside macrophages. Our investigations revealed that GAPDH moonlights as a mononuclear cell surface receptor that internalizes LL-37. We confirmed that the surface levels of purinergic receptor 7, the receptor previously reported for this peptide, remained unaltered on M.tb infected macrophages. Upon infection or cellular activation with IFNγ, surface recruited GAPDH bound to and internalized LL-37 into endocytic compartments via a lipid raft-dependent process. We also discovered a role for GAPDH in LL-37-mediated autophagy induction and clearance of intracellular pathogens. In infected macrophages wherein GAPDH had been knocked down, we observed an inhibition of LL-37-mediated autophagy which was rescued by GAPDH overexpression. This process was dependent on intracellular calcium and p38 MAPK pathways. Our findings reveal a previously unknown process by which macrophages internalize an antimicrobial peptide via cell surface GAPDH and suggest a moonlighting role of GAPDH in regulating cellular phenotypic responses of LL-37 resulting in reduction of M.tb burden.
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Affiliation(s)
- Asmita Dhiman
- Institute of Microbial Technology, CSIR, Chandigarh, India
| | | | | | - Rahul Dilawari
- Institute of Microbial Technology, CSIR, Chandigarh, India
| | | | | | - Anil Patidar
- Institute of Microbial Technology, CSIR, Chandigarh, India
| | | | - Pradeep Kumbhar
- National Institute of Pharmaceutical Education and Research, Punjab, India
| | | | - Manoj Raje
- Institute of Microbial Technology, CSIR, Chandigarh, India
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15
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Leite ML, Duque HM, Rodrigues GR, da Cunha NB, Franco OL. The LL-37 domain: a clue to cathelicidin immunomodulatory response? Peptides 2023; 165:171011. [PMID: 37068711 DOI: 10.1016/j.peptides.2023.171011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 04/19/2023]
Abstract
Host defense peptides (HDPs) are naturally occurring polypeptide sequences that, in addition to being active against bacteria, fungi, viruses, and other parasites, may stimulate immunomodulatory responses. Cathelicidins, a family of HDPs, are produced by diverse animal species, such as mammals, fish, birds, amphibians, and reptiles, to protect them against pathogen infections. These peptides have variable C-terminal domains responsible for their antimicrobial and immunomodulatory activities and a highly conserved N-terminal pre-pro region homologous to cathelin. Although cathelicidins are the major components of innate immunity, the molecular basis by which they induce an immune response is still unclear. In this review, we will address the role of the LL-37 domain and its SK-24, IV-20, FK-13 and LL-37 fragments in the immunity response. Other cathelicidins also share structural and functional characteristics with the LL-37 domain, suggesting that these fragments may be responsible for interaction between these peptides and receptors in humans. Fragments of the LL-37 domain can give us clues about how homologous cathelicidins, in general, induce an immune response. AVAILABILITY OF DATA AND MATERIAL: No data was used for the research described in the article.
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Affiliation(s)
- Michel Lopes Leite
- Departamento de Biologia Molecular, Instituto de Ciências Biológicas, Universidade de Brasília, Campus Darcy Ribeiro, Brasília, Distrito Federal, Brazil
| | - Harry Morales Duque
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Gisele Regina Rodrigues
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Nicolau Brito da Cunha
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil; Faculdade de Agronomia e Medicina Veterinária, Campus Darcy Ribeiro, Brasília, Brasil
| | - Octávio Luiz Franco
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil; S-Inova Biotech, Programa de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil.
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16
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Duarte-Mata DI, Salinas-Carmona MC. Antimicrobial peptides´ immune modulation role in intracellular bacterial infection. Front Immunol 2023; 14:1119574. [PMID: 37056758 PMCID: PMC10086130 DOI: 10.3389/fimmu.2023.1119574] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
Intracellular bacteria cause a wide range of diseases, and their intracellular lifestyle makes infections difficult to resolve. Furthermore, standard therapy antibiotics are often unable to eliminate the infection because they have poor cellular uptake and do not reach the concentrations needed to kill bacteria. In this context, antimicrobial peptides (AMPs) are a promising therapeutic approach. AMPs are short cationic peptides. They are essential components of the innate immune response and important candidates for therapy due to their bactericidal properties and ability to modulate host immune responses. AMPs control infections through their diverse immunomodulatory effects stimulating and/or boosting immune responses. This review focuses on AMPs described to treat intracellular bacterial infections and the known immune mechanisms they influence.
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17
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Superoxide Anion Chemistry-Its Role at the Core of the Innate Immunity. Int J Mol Sci 2023; 24:ijms24031841. [PMID: 36768162 PMCID: PMC9916283 DOI: 10.3390/ijms24031841] [Citation(s) in RCA: 35] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/09/2023] [Accepted: 01/12/2023] [Indexed: 01/19/2023] Open
Abstract
Classically, superoxide anion O2•- and reactive oxygen species ROS play a dual role. At the physiological balance level, they are a by-product of O2 reduction, necessary for cell signalling, and at the pathological level they are considered harmful, as they can induce disease and apoptosis, necrosis, ferroptosis, pyroptosis and autophagic cell death. This revision focuses on understanding the main characteristics of the superoxide O2•-, its generation pathways, the biomolecules it oxidizes and how it may contribute to their modification and toxicity. The role of superoxide dismutase, the enzyme responsible for the removal of most of the superoxide produced in living organisms, is studied. At the same time, the toxicity induced by superoxide and derived radicals is beneficial in the oxidative death of microbial pathogens, which are subsequently engulfed by specialized immune cells, such as neutrophils or macrophages, during the activation of innate immunity. Ultimately, this review describes in some depth the chemistry related to O2•- and how it is harnessed by the innate immune system to produce lysis of microbial agents.
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18
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Dong J, Wang W, Zhou W, Zhang S, Li M, Li N, Pan G, Zhang X, Bai J, Zhu C. Immunomodulatory biomaterials for implant-associated infections: from conventional to advanced therapeutic strategies. Biomater Res 2022; 26:72. [PMID: 36471454 PMCID: PMC9721013 DOI: 10.1186/s40824-022-00326-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 11/19/2022] [Indexed: 12/11/2022] Open
Abstract
Implant-associated infection (IAI) is increasingly emerging as a serious threat with the massive application of biomaterials. Bacteria attached to the surface of implants are often difficult to remove and exhibit high resistance to bactericides. In the quest for novel antimicrobial strategies, conventional antimicrobial materials often fail to exert their function because they tend to focus on direct bactericidal activity while neglecting the modulation of immune systems. The inflammatory response induced by host immune cells was thought to be a detrimental force impeding wound healing. However, the immune system has recently received increasing attention as a vital player in the host's defense against infection. Anti-infective strategies based on the modulation of host immune defenses are emerging as a field of interest. This review explains the importance of the immune system in combating infections and describes current advanced immune-enhanced anti-infection strategies. First, the characteristics of traditional/conventional implant biomaterials and the reasons for the difficulty of bacterial clearance in IAI were reviewed. Second, the importance of immune cells in the battle against bacteria is elucidated. Then, we discuss how to design biomaterials that activate the defense function of immune cells to enhance the antimicrobial potential. Based on the key premise of restoring proper host-protective immunity, varying advanced immune-enhanced antimicrobial strategies were discussed. Finally, current issues and perspectives in this field were offered. This review will provide scientific guidance to enhance the development of advanced anti-infective biomaterials.
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Affiliation(s)
- Jiale Dong
- grid.411395.b0000 0004 1757 0085Department of Orthopedic Surgery, The First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, 230001 Hefei, Anhui P. R. China
| | - Wenzhi Wang
- grid.411395.b0000 0004 1757 0085Department of Orthopedic Surgery, The First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, 230001 Hefei, Anhui P. R. China
| | - Wei Zhou
- grid.411395.b0000 0004 1757 0085Department of Orthopedic Surgery, The First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, 230001 Hefei, Anhui P. R. China
| | - Siming Zhang
- grid.411395.b0000 0004 1757 0085Department of Orthopedic Surgery, The First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, 230001 Hefei, Anhui P. R. China
| | - Meng Li
- grid.411395.b0000 0004 1757 0085Department of Orthopedic Surgery, The First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, 230001 Hefei, Anhui P. R. China ,grid.263761.70000 0001 0198 0694Medical College, Soochow University, 215006 Suzhou, Jiangsu P. R. China
| | - Ning Li
- grid.411395.b0000 0004 1757 0085Department of Orthopedic Surgery, The First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, 230001 Hefei, Anhui P. R. China
| | - Guoqing Pan
- grid.440785.a0000 0001 0743 511XInstitute for Advanced Materials, School of Materials Science and Engineering, Jiangsu University, 212013 Zhenjiang, China
| | - Xianzuo Zhang
- grid.411395.b0000 0004 1757 0085Department of Orthopedic Surgery, The First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, 230001 Hefei, Anhui P. R. China
| | - Jiaxiang Bai
- grid.263761.70000 0001 0198 0694Medical College, Soochow University, 215006 Suzhou, Jiangsu P. R. China
| | - Chen Zhu
- grid.411395.b0000 0004 1757 0085Department of Orthopedic Surgery, The First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, 230001 Hefei, Anhui P. R. China
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19
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Jayathilaka EHTT, Rajapaksha DC, Nikapitiya C, Lee J, De Zoysa M, Whang I. Novel Antimicrobial Peptide “Octoprohibitin” against Multidrug Resistant Acinetobacter baumannii. Pharmaceuticals (Basel) 2022; 15:ph15080928. [PMID: 36015076 PMCID: PMC9415640 DOI: 10.3390/ph15080928] [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: 06/08/2022] [Revised: 07/11/2022] [Accepted: 07/22/2022] [Indexed: 11/16/2022] Open
Abstract
Octoprohibitin is a synthetic antimicrobial peptide (AMP), derived from the prohibitin-2 gene of Octopus minor. It showed substantial activity against multidrug resistant (MDR) Acinetobacter baumannii with a minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of 200 and 400 µg/mL, respectively. Time-kill kinetics and bacterial viability assays confirmed the concentration-dependent antibacterial activity of octoprohibitin against A. baumannii. The morphology and ultrastructure of A. baumannii were altered by treatment with octoprohibitin at the MIC and MBC levels. Furthermore, propidium iodide-fluorescein diacetate (PI-FDA) staining and 2′,7′-dichlorodihydrofluorescein diacetate (H2DCFDA) staining of octoprohibitin-treated A. baumannii revealed membrane permeability alterations and reactive oxygen species (ROS) generation, respectively. Agarose gel retardation results confirmed the DNA-binding ability of octoprohibitin to the genomic DNA of A. baumannii. Furthermore, octoprohibitin showed concentration-dependent inhibition of biofilm formation and eradication. The minimum biofilm inhibition concentration (MBIC) and minimum biofilm eradication concentration (MBEC) of octoprohibitin were 1000 and 1460 µg/mL, respectively. Octoprohibitin produced no significant cytotoxicity up to 800 µg/mL, and no hemolysis was observed up to 400 µg/mL. Furthermore, in vivo analysis in an A. baumannii-infected zebrafish model confirmed the effective bactericidal activity of octoprohibitin with higher cumulative survival percent (46.6%) and fewer pathological signs. Histological analysis showed reduced alterations in the gut, kidney, and gill tissues in the octoprohibitin-treated group compared with those in the phosphate-buffered saline (PBS)-treated group. In conclusion, our results suggest that octoprohibitin is a potential antibacterial and antibiofilm agent against MDR A. baumannii.
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Affiliation(s)
- E. H. T. Thulshan Jayathilaka
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Korea; (E.H.T.T.J.); (D.C.R.); (C.N.)
| | - Dinusha C. Rajapaksha
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Korea; (E.H.T.T.J.); (D.C.R.); (C.N.)
| | - Chamilani Nikapitiya
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Korea; (E.H.T.T.J.); (D.C.R.); (C.N.)
| | - Joeun Lee
- National Marine Biodiversity Institute of Korea (MABIK), 75, Jangsan-ro, 101beon-gil, Janghang-eup 33662, Korea;
| | - Mahanama De Zoysa
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Korea; (E.H.T.T.J.); (D.C.R.); (C.N.)
- Correspondence: (M.D.Z.); (I.W.)
| | - Ilson Whang
- National Marine Biodiversity Institute of Korea (MABIK), 75, Jangsan-ro, 101beon-gil, Janghang-eup 33662, Korea;
- Correspondence: (M.D.Z.); (I.W.)
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van Dijk A, Anten J, Bakker A, Evers N, Hoekstra AT, Chang JC, Scheenstra MR, Veldhuizen EJA, Netea MG, Berkers CR, Haagsman HP. Innate Immune Training of Human Macrophages by Cathelicidin Analogs. Front Immunol 2022; 13:777530. [PMID: 35958593 PMCID: PMC9360325 DOI: 10.3389/fimmu.2022.777530] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 02/15/2022] [Indexed: 11/21/2022] Open
Abstract
Trained innate immunity can be induced in human macrophages by microbial ligands, but it is unknown if exposure to endogenous alarmins such as cathelicidins can have similar effects. Previously, we demonstrated sustained protection against infection by the chicken cathelicidin-2 analog DCATH-2. Thus, we assessed the capacity of cathelicidins to induce trained immunity. PMA-differentiated THP-1 (dTHP1) cells were trained with cathelicidin analogs for 24 hours and restimulated after a 3-day rest period. DCATH-2 training of dTHP-1 cells amplified their proinflammatory cytokine response when restimulated with TLR2/4 agonists. Trained cells displayed a biased cellular metabolism towards mTOR-dependent aerobic glycolysis and long-chain fatty acid accumulation and augmented microbicidal activity. DCATH-2-induced trained immunity was inhibited by histone acetylase inhibitors, suggesting epigenetic regulation, and depended on caveolae/lipid raft-mediated uptake, MAPK p38 and purinergic signaling. To our knowledge, this is the first report of trained immunity by host defense peptides.
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Affiliation(s)
- Albert van Dijk
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
- *Correspondence: Albert van Dijk,
| | - Jennifer Anten
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Anne Bakker
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Noah Evers
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Anna T. Hoekstra
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands
| | - Jung-Chin Chang
- Division Cell Biology, Metabolism & Cancer, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Maaike R. Scheenstra
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Edwin J. A. Veldhuizen
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Mihai G. Netea
- Department of Internal Medicine, Radboud Center for Infectious Diseases (RCI), Radboud University Nijmegen Medical Centre, Nijmegen, Netherlands
| | - Celia R. Berkers
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, Netherlands
- Division Cell Biology, Metabolism & Cancer, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Henk P. Haagsman
- Division Infectious Diseases and Immunology, Department Biomolecular Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
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In pursuit of next-generation therapeutics: Antimicrobial peptides against superbugs, their sources, mechanism of action, nanotechnology-based delivery, and clinical applications. Int J Biol Macromol 2022; 218:135-156. [PMID: 35868409 DOI: 10.1016/j.ijbiomac.2022.07.103] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 12/12/2022]
Abstract
Antimicrobial peptides (AMPs) attracted attention as potential source of novel antimicrobials. Multi-drug resistant (MDR) infections have emerged as a global threat to public health in recent years. Furthermore, due to rapid emergence of new diseases, there is pressing need for development of efficient antimicrobials. AMPs are essential part of the innate immunity in most living organisms, acting as the primary line of defense against foreign invasions. AMPs kill a wide range of microorganisms by primarily targeting cell membranes or intracellular components through a variety of ways. AMPs can be broadly categorized based on their physico-chemical properties, structure, function, target and source of origin. The synthetic analogues produced either with suitable chemical modifications or with the use of suitable delivery systems are projected to eliminate the constraints of toxicity and poor stability commonly linked with natural AMPs. The concept of peptidomimetics is gaining ground around the world nowadays. Among the delivery systems, nanoparticles are emerging as potential delivery tools for AMPs, amplifying their utility against a variety of pathogens. In the present review, the broad classification of various AMPs, their mechanism of action (MOA), challenges associated with AMPs, current applications, and novel strategies to overcome the limitations have been discussed.
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Zhang Y, Towers CG, Singh UK, Liu J, Håkansson M, Logan DT, Donini O, Kutateladze TG. Dusquetide modulates innate immune response through binding to p62. Structure 2022; 30:1055-1061.e7. [PMID: 35640615 PMCID: PMC9357125 DOI: 10.1016/j.str.2022.05.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/10/2022] [Accepted: 05/05/2022] [Indexed: 11/30/2022]
Abstract
SQSTM1/p62 is an autophagic receptor that plays a major role in mediating stress and innate immune responses. Preclinical studies identified p62 as a target of the prototype innate defense regulator (IDR); however, the molecular mechanism of this process remains unclear. Here, we describe the structural basis and biological consequences of the interaction of p62 with the next generation of IDRs, dusquetide. Both electrostatic and hydrophobic contacts drive the formation of the complex between dusquetide and the ZZ domain of p62. We show that dusquetide penetrates the cell membrane and associates with p62 in vivo. Dusquetide binding modulates the p62-RIP1 complex, increases p38 phosphorylation, and enhances CEBP/B expression without activating autophagy. Our findings provide molecular details underlying the IDR action that may help in the development of new strategies to pharmacologically target p62.
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Ali W, Elsahn A, Ting DSJ, Dua HS, Mohammed I. Host Defence Peptides: A Potent Alternative to Combat Antimicrobial Resistance in the Era of the COVID-19 Pandemic. Antibiotics (Basel) 2022; 11:475. [PMID: 35453226 PMCID: PMC9032040 DOI: 10.3390/antibiotics11040475] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/21/2022] [Accepted: 03/24/2022] [Indexed: 12/07/2022] Open
Abstract
One of the greatest challenges facing the medical community today is the ever-increasing trajectory of antimicrobial resistance (AMR), which is being compounded by the decrease in our antimicrobial armamentarium. From their initial discovery to the current day, antibiotics have seen an exponential increase in their usage, from medical to agricultural use. Benefits aside, this has led to an exponential increase in AMR, with the fear that over 10 million lives are predicted to be lost by 2050, according to the World Health Organisation (WHO). As such, medical researchers are turning their focus to discovering novel alternatives to antimicrobials, one being Host Defence Peptides (HDPs). These small cationic peptides have shown great efficacy in being used as an antimicrobial therapy for currently resistant microbial variants. With the sudden emergence of the SARS-CoV-2 variant and the subsequent global pandemic, the great versatility and potential use of HDPs as an alternative to conventional antibiotics in treating as well as preventing the spread of COVID-19 has been reviewed. Thus, to allow the reader to have a full understanding of the multifaceted therapeutic use of HDPs, this literature review shall cover the association between COVID-19 and AMR whilst discussing and evaluating the use of HDPs as an answer to antimicrobial resistance (AMR).
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Affiliation(s)
| | | | | | | | - Imran Mohammed
- Section of Ophthalmology, Larry A. Donoso Laboratory for Eye Research, Academic Unit of Mental Health and Clinical Neuroscience, School of Medicine, University of Nottingham, Queens Medical Centre, Eye and ENT Building, Nottingham NG7 2UH, UK; (W.A.); (A.E.); (D.S.J.T.); (H.S.D.)
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24
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[Research progress of antibacterial modification of orthopaedic implants surface]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2022; 36:511-516. [PMID: 35426294 PMCID: PMC9011072 DOI: 10.7507/1002-1892.202112109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To summarize the related research progress of antibacterial modification of orthopaedic implants surface in recent years. METHODS The domestic and foreign related literature in recent years was extensively consulted, the research progress on antibacterial modification of orthopaedic implants surface was discussed from two aspects of characteristics of infection in orthopedic implants and surface anti-infection modification. RESULTS The orthopaedic implants infections are mainly related to aspects of bacterial adhesion, decreased host immunity, and surface biofilm formation. At present, the main antimicrobial coating methods of orthopaedic implants are antibacterial adhesion coating, antibiotic coating, inorganic antimicrobial coating, composite antimicrobial coating, nitric oxide coating, immunomodulation, three-dimensional printing, polymer antimicrobial coating, and "smart" coating. CONCLUSION The above-mentioned antibacterial coating methods of orthopedic implants can not only inhibit bacterial adhesion, but also solve the problems of low immunity and biofilm formation. However, its mechanism of action and modification are still controversial and require further research.
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Emelianova AG, Petrova NV, Fremez C, Fontanié M, Tarasov SА, Epstein ОI. Therapeutic potential of highly diluted antibodies in antibiotic-resistant infection. Eur J Pharm Sci 2022; 173:106161. [DOI: 10.1016/j.ejps.2022.106161] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 12/02/2021] [Accepted: 03/02/2022] [Indexed: 12/31/2022]
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Yang Y, Wu J, Li Q, Wang J, Mu L, Hui L, Li M, Xu W, Yang H, Wei L. A non-bactericidal cathelicidin provides prophylactic efficacy against bacterial infection by driving phagocyte influx. eLife 2022; 11:72849. [PMID: 35195067 PMCID: PMC8865851 DOI: 10.7554/elife.72849] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 02/07/2022] [Indexed: 12/03/2022] Open
Abstract
The roles of bactericidal cathelicidins against bacterial infection have been extensively studied. However, the antibacterial property and mechanism of action of non-bactericidal cathelicidins are rarely known. Herein, a novel naturally occurring cathelicidin (PopuCATH) from tree frog (Polypedates puerensis) did not show any direct anti-bacterial activity in vitro. Intriguingly, intraperitoneal injection of PopuCATH before bacterial inoculation significantly reduced the bacterial load in tree frogs and mice, and reduced the inflammatory response induced by bacterial inoculation in mice. PopuCATH pretreatment also increased the survival rates of septic mice induced by a lethal dose of bacterial inoculation or cecal ligation and puncture (CLP). Intraperitoneal injection of PopuCATH significantly drove the leukocyte influx in both frogs and mice. In mice, PopuCATH rapidly drove neutrophil, monocyte/macrophage influx in mouse abdominal cavity and peripheral blood with a negligible impact on T and B lymphocytes, and neutrophils, monocytes/macrophages, but not T and B lymphocytes, were required for the preventive efficacy of PopuCATH. PopuCATH did not directly act as chemoattractant for phagocytes, but PopuCATH obviously drove phagocyte migration when it was cultured with macrophages. PopuCATH significantly elicited chemokine/cytokine production in macrophages through activating p38/ERK mitogen-activated protein kinases (MAPKs) and NF-κB p65. PopuCATH markedly enhanced neutrophil phagocytosis via promoting the release of neutrophil extracellular traps (NETs). Additionally, PopuCATH showed low side effects both in vitro and in vivo. Collectively, PopuCATH acts as a host-based immune defense regulator that provides prophylactic efficacy against bacterial infection without direct antimicrobial effects. Our findings reveal a non-bactericidal cathelicidin which possesses unique anti-bacterial action, and highlight the potential of PopuCATH to prevent bacterial infection.
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Affiliation(s)
- Yang Yang
- Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Jing Wu
- School of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Qiao Li
- Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Jing Wang
- Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Lixian Mu
- School of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Li Hui
- The Affiliated Guangji Hospital of Soochow University, Suzhou, China
| | - Min Li
- Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Wei Xu
- Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Hailong Yang
- School of Basic Medical Sciences, Kunming Medical University, Kunming, China
| | - Lin Wei
- Jiangsu Provincial Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
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Selim S, Faried OA, Almuhayawi MS, Mohammed OA, Saleh FM, Warrad M. Dynamic Gene Clusters Mediating Carbapenem-Resistant Acinetobacter baumannii Clinical Isolates. Antibiotics (Basel) 2022; 11:antibiotics11020168. [PMID: 35203771 PMCID: PMC8868416 DOI: 10.3390/antibiotics11020168] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 02/04/2023] Open
Abstract
Acinetobacter baumanni (A. baumannii), a nonfermenting Gram-negative bacterium, has recently been associated with a broad range of nosocomial infections. To gain more meaningful insight into the problem of nosocomial illnesses caused by the multidrug-resistant (MDR) A. baumannii, as well as the factors that increase the risk of catching these infections, this investigation included a total of 86 clinical A. baumannii infections. Repetitive extragenic palindromic (REP)-PCR was used to investigate imipenem-resistant A. baumannii isolates for dynamic gene clusters causing carbapenem resistance. Four distinct A. baumannii lineages were found in the REP-PCR-DNA fingerprints of all isolates, with 95% of the samples coming from two dominant lineages. Imipenem, amikacin, and ciprofloxacin were less effective against genotype (A) isolates because of enhanced antibiotic tolerance. Lastly, to gain more insight into the mode of action of imipenem, we explored the binding affinity of imipenem toward different Acinetobacter baumannii OXA beta-lactamase class enzymes.
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Affiliation(s)
- Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 72341, Saudi Arabia
- Correspondence:
| | - Osama Ahmed Faried
- Medical Microbiology and Immunology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef 62513, Egypt;
| | - Mohamed S. Almuhayawi
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Osama A. Mohammed
- Department of Clinical Pharmacology, Faculty of Medicine, Ain Shams University, Cairo 11566, Egypt;
- Department of Clinical Pharmacology, Faculty of Medicine, Bisha University, Bisha 61922, Saudi Arabia
| | - Fayez M. Saleh
- Department of Medical Microbiology, Faculty of Medicine, University of Tabuk, Tabuk 71491, Saudi Arabia;
| | - Mona Warrad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences at Al-Quriat, Jouf University, Al-Quriat 77454, Saudi Arabia;
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Kalelkar PP, Riddick M, García AJ. Biomaterial-based delivery of antimicrobial therapies for the treatment of bacterial infections. NATURE REVIEWS. MATERIALS 2022; 7:39-54. [PMID: 35330939 PMCID: PMC8938918 DOI: 10.1038/s41578-021-00362-4] [Citation(s) in RCA: 148] [Impact Index Per Article: 74.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
UNLABELLED The rise in antibiotic-resistant bacteria, including strains that are resistant to last-resort antibiotics, and the limited ability of antibiotics to eradicate biofilms, have necessitated the development of alternative antibacterial therapeutics. Antibacterial biomaterials, such as polycationic polymers, and biomaterial-assisted delivery of non-antibiotic therapeutics, such as bacteriophages, antimicrobial peptides and antimicrobial enzymes, have improved our ability to treat antibiotic-resistant and recurring infections. Biomaterials not only allow targeted delivery of multiple agents, but also sustained release at the infection site, thereby reducing potential systemic adverse effects. In this Review, we discuss biomaterial-based non-antibiotic antibacterial therapies for the treatment of community- and hospital-acquired infectious diseases, with a focus in in vivo results. We highlight the translational potential of different biomaterial-based strategies, and provide a perspective on the challenges associated with their clinical translation. Finally, we discuss the future scope of biomaterial-assisted antibacterial therapies. WEB SUMMARY The development of antibiotic tolerance and resistance has demanded the search for alternative antibacterial therapies. This Review discusses antibacterial biomaterials and biomaterial-assisted delivery of non-antibiotic therapeutics for the treatment of bacterial infectious diseases, with a focus on clinical translation.
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Affiliation(s)
- Pranav P. Kalelkar
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Milan Riddick
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Andrés J. García
- Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
- author to whom correspondence should be addressed:
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29
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Vasconcelos PGS, Alves ÉP, Maia CMDA, Brito ACM, Silva DR, Freires IA, Cavalcanti YW, Rehder VLG, Ruiz ALTG, Duarte MCT, Rosalen PL, Godoy GP, Costa EMMDB. Biological properties of Schinus terebinthifolia Raddi essential oil. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902021000x2e20417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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30
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Panjla A, Kaul G, Chopra S, Titz A, Verma S. Short Peptides and Their Mimetics as Potent Antibacterial Agents and Antibiotic Adjuvants. ACS Chem Biol 2021; 16:2731-2745. [PMID: 34779605 DOI: 10.1021/acschembio.1c00626] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Antimicrobial resistance (AMR) has been increasing unrelentingly worldwide, thus negatively impacting human health. The discovery and development of novel antibiotics is an urgent unmet need of the hour. However, it has become more challenging, requiring increasingly time-consuming efforts with increased commercial risks. Hence, alternative strategies are urgently needed to potentiate the existing antibiotics. In this context, short cationic peptides or peptide-based antimicrobials that mimic the activity of naturally occurring antimicrobial peptides (AMPs) could overcome the disadvantages of AMPs having evolved as potent antibacterial agents. Besides their potent antibacterial efficacy, short peptide conjugates have also gained attention as potent adjuvants to conventional antibiotics. Such peptide antibiotic combinations have become an increasingly cost-effective therapeutic option to tackle AMR. This Review summarizes the recent progress for peptide-based small molecules as promising antimicrobials and as adjuvants for conventional antibiotics to counter multidrug resistant (MDR) pathogens.
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Affiliation(s)
- Apurva Panjla
- Department of Chemistry, IIT Kanpur, Kanpur-208016, Uttar Pradesh, India
| | - Grace Kaul
- Department of Microbiology, CSIR-Central Drug Research Institute, Lucknow-226031, Uttar Pradesh, India
- AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sidharth Chopra
- Department of Microbiology, CSIR-Central Drug Research Institute, Lucknow-226031, Uttar Pradesh, India
- AcSIR: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Alexander Titz
- Chemical Biology of Carbohydrates (CBCH), Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, 66123 Saarbrücken, Germany
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF), 38124, Standort Hannover-Braunschweig, Germany
| | - Sandeep Verma
- Department of Chemistry, IIT Kanpur, Kanpur-208016, Uttar Pradesh, India
- Center for Nanoscience, IIT Kanpur, Kanpur-208016, Uttar Pradesh, India
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Martell EM, González-Garcia M, Ständker L, Otero-González AJ. Host defense peptides as immunomodulators: The other side of the coin. Peptides 2021; 146:170644. [PMID: 34464592 DOI: 10.1016/j.peptides.2021.170644] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 08/27/2021] [Accepted: 08/27/2021] [Indexed: 12/13/2022]
Abstract
Host defense peptides (HDPs) exhibit a broad range of antimicrobial and immunomodulatory activities. In this sense, both functions are like different sides of the same coin. The direct antimicrobial side was discovered first, and widely studied for the development of anti-infective therapies. In contrast, the immunomodulatory side was recognized later and in the last 20 years the interest in this field has been continuously growing. Different to their antimicrobial activities, the immunomodulatory activities of host defense peptides are more effective in vivo. They offer a great opportunity for new therapeutic applications in the fields of anti-infective therapy, chronic inflammatory diseases treatment, novel vaccine adjuvants development and anticancer immunotherapy. These immune related functions of HDPs includes chemoattraction of leukocytes, modulation of inflammation, enhancement of antigen presentation and polarization of adaptive immune responses. Our attempt with this review is to make a careful evaluation of different aspects of the less explored, but attractive immunomodulatory side of the HDP functional coin.
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Affiliation(s)
- Ernesto M Martell
- Center for Protein Studies, Faculty of Biology, Havana University, Cuba
| | | | - Ludger Ständker
- Core Facility Functional Peptidomics (CFP), Ulm University Medical Center, Ulm, Germany
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Luna-Reyes I, Pérez-Hernández EG, Delgado-Coello B, Mas-Oliva J. Peptides as Therapeutic Molecules to Neutralize Gram-negative Bacterial Lipopolysaccharides in Sepsis and Septic Shock. Arch Med Res 2021; 52:798-807. [DOI: 10.1016/j.arcmed.2021.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 08/03/2021] [Indexed: 11/16/2022]
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Host Defense Peptides: Dual Antimicrobial and Immunomodulatory Action. Int J Mol Sci 2021; 22:ijms222011172. [PMID: 34681833 PMCID: PMC8538224 DOI: 10.3390/ijms222011172] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/08/2021] [Accepted: 10/13/2021] [Indexed: 12/14/2022] Open
Abstract
The rapid rise of multidrug-resistant (MDR) bacteria has once again caused bacterial infections to become a global health concern. Antimicrobial peptides (AMPs), also known as host defense peptides (HDPs), offer a viable solution to these pathogens due to their diverse mechanisms of actions, which include direct killing as well as immunomodulatory properties (e.g., anti-inflammatory activity). HDPs may hence provide a more robust treatment of bacterial infections. In this review, the advent of and the mechanisms that lead to antibiotic resistance will be described. HDP mechanisms of antibacterial and immunomodulatory action will be presented, with specific examples of how the HDP aurein 2.2 and a few of its derivatives, namely peptide 73 and cG4L73, function. Finally, resistance that may arise from a broader use of HDPs in a clinical setting and methods to improve biocompatibility will be briefly discussed.
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34
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Omidvar R, Vosseler N, Abbas A, Gutmann B, Grünwald-Gruber C, Altmann F, Siddique S, Bohlmann H. Analysis of a gene family for PDF-like peptides from Arabidopsis. Sci Rep 2021; 11:18948. [PMID: 34556705 PMCID: PMC8460643 DOI: 10.1038/s41598-021-98175-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/31/2021] [Indexed: 11/09/2022] Open
Abstract
Plant defensins are small, basic peptides that have a characteristic three-dimensional folding pattern which is stabilized by four disulfide bridges. We show here that Arabidopsis contains in addition to the proper plant defensins a group of 9 plant defensin-like (PdfL) genes. They are all expressed at low levels while GUS fusions of the promoters showed expression in most tissues with only minor differences. We produced two of the encoded peptides in E. coli and tested the antimicrobial activity in vitro. Both were highly active against fungi but had lower activity against bacteria. At higher concentrations hyperbranching and swollen tips, which are indicative of antimicrobial activity, were induced in Fusarium graminearum by both peptides. Overexpression lines for most PdfL genes were produced using the 35S CaMV promoter to study their possible in planta function. With the exception of PdfL4.1 these lines had enhanced resistance against F. oxysporum. All PDFL peptides were also transiently expressed in Nicotiana benthamiana leaves with agroinfiltration using the pPZP3425 vector. In case of PDFL1.4 this resulted in complete death of the infiltrated tissues after 7 days. All other PDFLs resulted only in various degrees of small necrotic lesions. In conclusion, our results show that at least some of the PdfL genes could function in plant resistance.
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Affiliation(s)
- Reza Omidvar
- Division of Plant Protection, Department of Crop Sciences, Institute of Plant Protection, University of Natural Resources and Life Sciences Vienna, UFT Tulln, Konrad Lorenz Str. 24, 3430, Tulln, Austria
- Institute of Biotechnology in Plant Production, Department of Agrobiotechnology, University of Natural Resources and Life Sciences, Vienna (BOKU), Tulln, Austria
| | - Nadine Vosseler
- Division of Plant Protection, Department of Crop Sciences, Institute of Plant Protection, University of Natural Resources and Life Sciences Vienna, UFT Tulln, Konrad Lorenz Str. 24, 3430, Tulln, Austria
| | - Amjad Abbas
- Division of Plant Protection, Department of Crop Sciences, Institute of Plant Protection, University of Natural Resources and Life Sciences Vienna, UFT Tulln, Konrad Lorenz Str. 24, 3430, Tulln, Austria
- Department of Plant Pathology, University of Agriculture, Faisalabad, 38040, Pakistan
| | - Birgit Gutmann
- Division of Plant Protection, Department of Crop Sciences, Institute of Plant Protection, University of Natural Resources and Life Sciences Vienna, UFT Tulln, Konrad Lorenz Str. 24, 3430, Tulln, Austria
- RIVIERA Pharma and Cosmetics GmbH, Holzhackerstraße 1, Tulln, Austria
| | - Clemens Grünwald-Gruber
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, 1190, Vienna, Austria
| | - Friedrich Altmann
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, 1190, Vienna, Austria
| | - Shahid Siddique
- Division of Plant Protection, Department of Crop Sciences, Institute of Plant Protection, University of Natural Resources and Life Sciences Vienna, UFT Tulln, Konrad Lorenz Str. 24, 3430, Tulln, Austria
- Department of Entomology and Nematology, University of California Davis, Davis, CA, 95616, USA
| | - Holger Bohlmann
- Division of Plant Protection, Department of Crop Sciences, Institute of Plant Protection, University of Natural Resources and Life Sciences Vienna, UFT Tulln, Konrad Lorenz Str. 24, 3430, Tulln, Austria.
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Ibarra-Valencia MA, Espino-Solis GP, Estrada BE, Corzo G. Immunomodulatory Responses of Two Synthetic Peptides against Salmonella Typhimurium Infection. Molecules 2021; 26:5573. [PMID: 34577046 PMCID: PMC8466354 DOI: 10.3390/molecules26185573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/03/2021] [Accepted: 09/08/2021] [Indexed: 12/04/2022] Open
Abstract
In vitro assays of phagocytic activity showed that the peptide Pin2[G] stimulates phagocytosis in BMDM cells from 0.15 to 1.25 μg/mL, and in RAW 264.7 cells at 0.31 μg/mL. In the same way, the peptide FA1 induced phagocytosis in BMDM cells from 1.17 to 4.69 μg/mL and in RAW 264.7 cells at 150 μg/mL. Cytokine profiles of uninfected RAW 264.7 showed that Pin2[G] increased liberation TNF (from 1.25 to 10 μg/mL) and MCP-1 (10 μg/mL), and FA1 also increased the release of TNF (from 18.75 to 75 μg/mL) but did not increase the liberation of MCP-1. In RAW 264.7 macrophages infected with Salmonella enterica serovar Typhimurium, the expression of TNF increases with Pin2[G] (1.25-10 μg/mL) or FA1 (18.75-75 μg/mL). In these cells, FA1 also increases the expression of IL-12p70, IL-10 and IFN-γ when applied at concentrations of 37.5, 75 and 150 μg/mL, respectively. On the other hand, stimulation with 1.25 and 10 μg/mL of Pin2[G] promotes the expression of MCP-1 and IL-12p70, respectively. Finally, peptides treatment did not resolve murine gastric infection, but improves their physical condition. Cytokine profiles showed that FA1 reduces IFN-γ and MCP-1 but increases IL-10, while Pin2[G] reduces IFN-γ but increases the liberation of IL-6 and IL-12p70. This data suggests a promising activity of FA1 and Pin2[G] as immunomodulators of gastric infections in S. Typhimurium.
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Affiliation(s)
- Marco Antonio Ibarra-Valencia
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, A.P. 510-3, Cuernavaca 62250, Mexico
| | - Gerardo Pável Espino-Solis
- Laboratorio de Investigación Traslacional and Laboratorio Nacional de Citometría de Flujo-UACH, Universidad Autónoma de Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (G.P.E.-S.); (B.E.E.)
| | - Blanca Elisa Estrada
- Laboratorio de Investigación Traslacional and Laboratorio Nacional de Citometría de Flujo-UACH, Universidad Autónoma de Chihuahua, Circuito Universitario, Campus II, Chihuahua 31109, Mexico; (G.P.E.-S.); (B.E.E.)
| | - Gerardo Corzo
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, A.P. 510-3, Cuernavaca 62250, Mexico
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Song X, Liu P, Liu X, Wang Y, Wei H, Zhang J, Yu L, Yan X, He Z. Dealing with MDR bacteria and biofilm in the post-antibiotic era: Application of antimicrobial peptides-based nano-formulation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112318. [PMID: 34474869 DOI: 10.1016/j.msec.2021.112318] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/05/2021] [Accepted: 07/09/2021] [Indexed: 02/07/2023]
Abstract
The rapid development of multidrug-resistant (MDR) bacteria due to the improper and overuse of antibiotics and the ineffective performance of antibiotics against the difficult-to-treat biofilm-related infections (BRIs) have urgently called for alternative antimicrobial agents and strategies in combating bacterial infections. Antimicrobial peptides (AMPs), owing to their compelling antimicrobial activity against MDR bacteria and BRIs without causing bacteria resistance, have attracted extensive attention in the research field. With the development of nanomaterial-based drug delivery strategies, AMPs-based nano-formulations have significantly improved the therapeutic effects of AMPs by ameliorating their hydrolytic stability, half-life in vivo, and solubility as well as reducing the cytotoxicity and hemolysis, etc. This review has comprehensively summarized the application AMPs-based nano-formulation in various bacterial infections models, including bloodstream infections (specifically sepsis), pulmonary infections, chronic wound infections, gastrointestinal infections, among others. The design of the nanomaterial-based drug delivery systems and the therapeutic effects of the AMPs-based nano-formulations in literature have been categorized and in details discussed. Overall, this review provides insights into the advantages and disadvantages of the current developed AMPs-based nano-formulations in literature for the treatment of bacterial infections, bringing inspirations and suggestions for their future design in the way towards clinical translation.
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Affiliation(s)
- Xinyu Song
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Pengyan Liu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Xiaohu Liu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Yanan Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Huichao Wei
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Jingwen Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Liangmin Yu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
| | - Xuefeng Yan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Zhiyu He
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
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Cai J, Cui X, Wang X, You L, Ji C, Cao Y. A Novel Anti-Infective Peptide BCCY-1 With Immunomodulatory Activities. Front Immunol 2021; 12:713960. [PMID: 34367182 PMCID: PMC8339908 DOI: 10.3389/fimmu.2021.713960] [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: 05/24/2021] [Accepted: 07/09/2021] [Indexed: 01/05/2023] Open
Abstract
Antibiotic resistance has been considered to be a global threat which underscores the need to develop novel anti-infective therapeutics. Modulation of innate immunity by synthetic peptides is an attractive strategy to overcome this circumstance. We recently reported that BCCY-1, a human β-casein-derived peptide displays regulatory activities on monocytes, thereby enhancing their actions in innate immune responses. However, the function of peptide BCCY-1 in host defense against infection remains unknown. In this study, we investigated the in vivo characteristics and effects of peptide BCCY-1 in mouse models of bacterial infection. Following intraperitoneal injection, the peptide BCCY-1 exhibited high level of cellular uptake by monocytes without obvious toxicities. Results revealed that peptide BCCY-1, but not the scrambled version, stimulated the chemokine production and monocyte recruitment in vivo. Treatment with BCCY-1 enhanced the pathogen clearance and protected mice against lethal infections. Because the anti-infective effects of BCCY-1 was abolished by in vivo depletion of monocytes/macrophages rather than lymphocytes and granulocytes, we conclude that monocytes/macrophages are key effector cells in BCCY-1-mediated anti-infective protection. Additionally, BCCY-1 lacks direct antimicrobial activity. To our knowledge, a human β-casein-derived peptide that counters infection by selective regulation of innate immunity has not been reported previously. These results suggest peptide BCCY-1 as a promising alternative approach and a valuable complement to current anti-infective strategy.
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Affiliation(s)
- Jinyang Cai
- Nanjing Maternity and Child Health Care Institute, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, China.,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Xianwei Cui
- Nanjing Maternity and Child Health Care Institute, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, China
| | - Xing Wang
- Nanjing Maternity and Child Health Care Institute, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, China
| | - Lianghui You
- Nanjing Maternity and Child Health Care Institute, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, China
| | - Chenbo Ji
- Nanjing Maternity and Child Health Care Institute, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, China
| | - Yan Cao
- Nanjing Maternity and Child Health Care Institute, Nanjing Maternity and Child Health Care Hospital, Women's Hospital of Nanjing Medical University, Nanjing, China
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Lin Q, Fu Q, Chen D, Yu B, Luo Y, Huang Z, Zheng P, Mao X, Yu J, Luo J, Yan H, He J. Functional Characterization of Porcine NK-Lysin: A Novel Immunomodulator That Regulates Intestinal Inflammatory Response. Molecules 2021; 26:molecules26144242. [PMID: 34299517 PMCID: PMC8307250 DOI: 10.3390/molecules26144242] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/01/2021] [Accepted: 07/09/2021] [Indexed: 11/16/2022] Open
Abstract
Porcine NK-Lysine (PNKL) is a new antimicrobial peptide (AMP) identified in the small intestine. In this study, PNKL protein was obtained through heterologous expression in Escherichia coli and was estimated by SDS-PAGE at 33 kDa. The antibacterial activities of PNKL were determined using various bacterial strains and showed broad-spectrum antimicrobial activity against Gram-negative and Gram-positive bacteria. Furthermore, E. coli K88-challenged IPEC-J2 cells were used to determine PNKL influences on inflammatory responses. Hemolytic assays showed that PNKL had no detrimental impact on cell viability. Interestingly, PNKL elevated the viability of IPEC-J2 cells exposure to E. coli K88. PNKL significantly decreased the cell apoptosis rate, and improved the distribution and abundance of tight junction protein ZO-1 in IPEC-J2 cells upon E. coli K88-challenge. Importantly, PNKL not only down regulated the expressions of inflammatory cytokines such as the IL-6 and TNF-α, but also down regulated the expressions of NF-κB, Caspase3, and Caspase9 in the E. coli K88-challenged cells. These results suggest a novel function of natural killer (NK)-lysin, and the anti-bacterial and anti-inflammatory properties of PNKL may allow it a potential substitute for conventionally used antibiotics or drugs.
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Affiliation(s)
- Qian Lin
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Qingqing Fu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Daiwen Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Bing Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Yuheng Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Zhiqing Huang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Ping Zheng
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Xiangbing Mao
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Jie Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Junqiu Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Hui Yan
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
| | - Jun He
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; (Q.L.); (Q.F.); (D.C.); (B.Y.); (Y.L.); (Z.H.); (P.Z.); (X.M.); (J.Y.); (J.L.); (H.Y.)
- Key Laboratory of Animal Disease-Resistant Nutrition, Chengdu 611130, China
- Correspondence: ; Tel.: +86-28-8629-1781; Fax: +86-28-8629-0922
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Li J, Chen J, Yang G, Tao L. Sublancin protects against methicillin-resistant Staphylococcus aureus infection by the combined modulation of innate immune response and microbiota. Peptides 2021; 141:170533. [PMID: 33775803 DOI: 10.1016/j.peptides.2021.170533] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/25/2021] [Accepted: 03/17/2021] [Indexed: 02/07/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a major pathogen responsible for community and hospital bacterial infections. In the present study, the protective role of sublancin, an antimicrobial peptides, was explored in MRSA infection model. We report that sublancin directly induce macrophage migration through the chemotactic receptors. We further show that sublancin exhibits protection in a mouse MRSA infection model. This protection involved an immunomodulatory activity, but was blocked by depletion of monocyte/macrophages or neutrophils. Sublancin selectively up-regulates the levels of chemokines (C-X-C motif chemokine ligand 1, CXCL1 and monocyte chemoattractant protein-1, MCP-1) while reducing the production of pro-inflammatory cytokine (tumor necrosis factor-α, TNF-α). Meanwhile, sublancin regulated the microbiota composition disrupted by MRSA injection, increasing the abundance of Lactobacillus and decreasing that of Staphylococcus and Pseudomonas. Also, sublancin restored to normal levels of metabolic functional pathways, especially amino acid biosynthesis (e.g., branched amino acid, histidine and tryptophan), disrupted after injection, and this restoration was significantly correlated with neutrophils. These results demonstrates that sublancin stimulates the innate response and modulates the microbiota community to protect against MRSA infection.
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Affiliation(s)
- Jiantao Li
- College of Animal Husbandry and Veterinary, Shenyang Agricultural University, Shenyang, Liaoning Province, 110866, China.
| | - Jing Chen
- College of Animal Husbandry and Veterinary, Shenyang Agricultural University, Shenyang, Liaoning Province, 110866, China
| | - Guiqin Yang
- College of Animal Husbandry and Veterinary, Shenyang Agricultural University, Shenyang, Liaoning Province, 110866, China
| | - Lijuan Tao
- College of Animal Husbandry and Veterinary, Shenyang Agricultural University, Shenyang, Liaoning Province, 110866, China
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40
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Immunomodulatory Properties of Host Defence Peptides in Skin Wound Healing. Biomolecules 2021; 11:biom11070952. [PMID: 34203393 PMCID: PMC8301823 DOI: 10.3390/biom11070952] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/16/2021] [Accepted: 06/19/2021] [Indexed: 02/07/2023] Open
Abstract
Cutaneous wound healing is a vital biological process that aids skin regeneration upon injury. Wound healing failure results from persistent inflammatory conditions observed in diabetes, or autoimmune diseases like psoriasis. Chronic wounds are incurable due to factors like poor oxygenation, aberrant function of peripheral sensory nervature, inadequate nutrients and blood tissue supply. The most significant hallmark of chronic wounds is heavily aberrant immune skin function. The immune response in humans relies on a large network of signalling molecules and their interactions. Research studies have reported on the dual role of host defence peptides (HDPs), which are also often called antimicrobial peptides (AMPs). Their duality reflects their potential for acting as antibacterial peptides, and as immunodulators that assist in modulating several biological signalling pathways related to processes such as wound healing, autoimmune disease, and others. HDPs may differentially control gene regulation and alter the behaviour of epithelial and immune cells, resulting in modulation of immune responses. In this review, we shed light on the understanding and most recent advances related to molecular mechanisms and immune modulatory features of host defence peptides in human skin wound healing. Understanding their functional role in skin immunity may further inspire topical treatments for chronic wounds.
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Jaynes JM, Sable R, Ronzetti M, Bautista W, Knotts Z, Abisoye-Ogunniyan A, Li D, Calvo R, Dashnyam M, Singh A, Guerin T, White J, Ravichandran S, Kumar P, Talsania K, Chen V, Ghebremedhin A, Karanam B, Bin Salam A, Amin R, Odzorig T, Aiken T, Nguyen V, Bian Y, Zarif JC, de Groot AE, Mehta M, Fan L, Hu X, Simeonov A, Pate N, Abu-Asab M, Ferrer M, Southall N, Ock CY, Zhao Y, Lopez H, Kozlov S, de Val N, Yates CC, Baljinnyam B, Marugan J, Rudloff U. Mannose receptor (CD206) activation in tumor-associated macrophages enhances adaptive and innate antitumor immune responses. Sci Transl Med 2021; 12:12/530/eaax6337. [PMID: 32051227 DOI: 10.1126/scitranslmed.aax6337] [Citation(s) in RCA: 195] [Impact Index Per Article: 65.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 10/11/2019] [Indexed: 02/06/2023]
Abstract
Solid tumors elicit a detectable immune response including the infiltration of tumor-associated macrophages (TAMs). Unfortunately, this immune response is co-opted into contributing toward tumor growth instead of preventing its progression. We seek to reestablish an antitumor immune response by selectively targeting surface receptors and endogenous signaling processes of the macrophage subtypes driving cancer progression. RP-182 is a synthetic 10-mer amphipathic analog of host defense peptides that selectively induces a conformational switch of the mannose receptor CD206 expressed on TAMs displaying an M2-like phenotype. RP-182-mediated activation of this receptor in human and murine M2-like macrophages elicits a program of endocytosis, phagosome-lysosome formation, and autophagy and reprograms M2-like TAMs to an antitumor M1-like phenotype. In syngeneic and autochthonous murine cancer models, RP-182 suppressed tumor growth, extended survival, and was an effective combination partner with chemo- or immune checkpoint therapy. Antitumor activity of RP-182 was also observed in CD206high patient-derived xenotransplantation models. Mechanistically, via selective reduction of immunosuppressive M2-like TAMs, RP-182 improved adaptive and innate antitumor immune responses, including increased cancer cell phagocytosis by reprogrammed TAMs.
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Affiliation(s)
- Jesse M Jaynes
- College of Agriculture, Environment and Nutrition Sciences, Integrative Biosciences Program, Tuskegee University, Tuskegee, AL 36088, USA.,Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Rushikesh Sable
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Michael Ronzetti
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Wendy Bautista
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, MD 21702, USA
| | - Zachary Knotts
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Abisola Abisoye-Ogunniyan
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA.,Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Dandan Li
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Raul Calvo
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Myagmarjav Dashnyam
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Anju Singh
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Theresa Guerin
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, MD 21702, USA
| | - Jason White
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Sarangan Ravichandran
- Advanced Biomedical Computing Center, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, MD 21701, USA
| | - Parimal Kumar
- Sequencing Facility and Single Cell Analysis Facility, Advanced Technology Research Facility, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD 21701, USA
| | - Keyur Talsania
- CCR-SF Bioinformatics Group, Advanced Biomedical and Computational Sciences, Biomedical Informatics and Data Science, Advanced Technology Research Facility, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD 21701, USA
| | - Vicky Chen
- CCR-SF Bioinformatics Group, Advanced Biomedical and Computational Sciences, Biomedical Informatics and Data Science, Advanced Technology Research Facility, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD 21701, USA
| | - Anghesom Ghebremedhin
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Balasubramanyam Karanam
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Ahmad Bin Salam
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Ruksana Amin
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Taivan Odzorig
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Taylor Aiken
- Thoracic and GI Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA.,Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA
| | - Victoria Nguyen
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Yansong Bian
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Jelani C Zarif
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA.,Bloomberg-Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA
| | - Amber E de Groot
- James Buchanan Brady Urological Institute, Johns Hopkins School of Medicine, Baltimore, MD 21287, USA.,Department of Pharmacology and Molecular Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21287, USA
| | - Monika Mehta
- Sequencing Facility and Single Cell Analysis Facility, Advanced Technology Research Facility, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD 21701, USA
| | - Lixin Fan
- Basic Science Program, Frederick National Laboratory for Cancer Research, SAXS Core Facility, Center for Cancer Research of the National Cancer Institute, Frederick, MD 21701, USA
| | - Xin Hu
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Anton Simeonov
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Nathan Pate
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, MD 21702, USA
| | - Mones Abu-Asab
- Section of Histopathology, National Eye Institute, Bethesda, MD 20892, USA
| | - Marc Ferrer
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Noel Southall
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA
| | - Chan-Young Ock
- Department of Hemato Oncology, Seoul National University Hospital, Seoul 03080, Korea
| | - Yongmei Zhao
- CCR-SF Bioinformatics Group, Advanced Biomedical and Computational Sciences, Biomedical Informatics and Data Science, Advanced Technology Research Facility, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc., Frederick, MD 21701, USA
| | | | - Serguei Kozlov
- Center for Advanced Preclinical Research, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, MD 21702, USA
| | - Natalia de Val
- Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, MD 21701, USA.,Center for Molecular Microscopy, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 21701, USA
| | - Clayton C Yates
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA.
| | - Bolormaa Baljinnyam
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA.
| | - Juan Marugan
- National Center for Advancing Translational Sciences, National Institutes of Health, Rockville, MD 20850, USA.
| | - Udo Rudloff
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA.
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Yang Y, Han X, Chen Y, Wu J, Li M, Yang H, Xu W, Wei L. EGCG Induces Pro-inflammatory Response in Macrophages to Prevent Bacterial Infection through the 67LR/p38/JNK Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5638-5651. [PMID: 33993695 DOI: 10.1021/acs.jafc.1c01353] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Extensive studies focused on the therapeutic efficacy of epigallocatechin-3-gallate (EGCG) against bacterial infection. However, little is known about its prophylactic efficacy against bacterial infection. Herein, we found that EGCG showed an effective prophylactic efficacy against bacterial infection with a broad spectrum, including Gram-negative, Gram-positive, and drug-resistant bacteria. Pretreatment with EGCG through intraperitoneal injection, intravenous injection, or intragastric administration significantly reduced the bacterial load, inflammatory response, and mortality in mouse abdominal infection models induced by bacterial inoculation or cecal ligation and puncture. Pretreatment with EGCG by intraperitoneal injection significantly increased the numbers of neutrophils and monocytes/macrophages in the abdominal cavity and peripheral blood of mice, and depletion of neutrophils and monocytes/macrophages by specific antibodies or chemical drugs obviously increased the bacterial load in mice. Of note, EGCG did not directly induce neutrophil and macrophage migration, and it just induced phagocyte migration in the presence of macrophages in a co-cultured system, implying that EGCG-induced phagocyte migration relies on its immunoregulatory effects on macrophages. EGCG markedly induced the production of cytokines and chemokines in macrophages and mouse peritoneal lavage, including tumor necrosis factor-α (TNF-α), interleukin-1 β (IL-1β), IL-6, CXC chemokine ligands 1 and 2 (CXCL1 and 2), and monocyte chemotactic protein-1 (MCP-1). EGCG significantly induced the phosphorylation of p38 and JNK mitogen-activated protein kinases (MAPKs) in macrophages, and inhibition of p38 and JNK MAPKs markedly reduced EGCG-induced chemokine and cytokine production. Anti-67-kDa laminin receptor (67LR) antibody treatment significantly reduced EGCG-induced chemokine production and p38 and JNK phosphorylation in macrophages. Together, EGCG showed an obvious prophylactic efficacy against bacterial infection by inducing a pro-inflammatory response in macrophages through the 67LR/p38/JNK signaling pathway, supporting the further development of EGCG as a potent prophylaxis for bacterial infection and providing new clues to understand the healthcare function of green tea.
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Affiliation(s)
- Yang Yang
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Xiaoyang Han
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Yue Chen
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Jing Wu
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Min Li
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Hailong Yang
- School of Basic Medical Sciences, Kunming Medical University, Kunming 650500, Yunnan, China
| | - Wei Xu
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Lin Wei
- Jiangsu Key Laboratory of Infection and Immunity, Institutes of Biology and Medical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
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43
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Rational design of innate defense regulator peptides as tumor vaccine adjuvants. NPJ Vaccines 2021; 6:75. [PMID: 34016984 PMCID: PMC8138013 DOI: 10.1038/s41541-021-00334-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 04/06/2021] [Indexed: 02/05/2023] Open
Abstract
The development of adjuvants has been an empirical process. Efforts to develop a new design and evaluation system for novel adjuvants are not only desirable but also necessary. Moreover, composite adjuvants that contain two or more types of adjuvants to synergistically enhance the immune response are important for adjuvant and vaccine design. Innate defense regulator peptides (IDRs) are promising adjuvants for clinical immunotherapy because they exhibit multifaceted immunomodulatory capabilities. However, the rational design and discovery of IDRs that have improved immunomodulatory activities have been hampered by the lack of screening techniques and the great challenges in the identification of their interaction partners. Here, we describe a screening and evaluation system for IDR design. On the basis of in vitro screening, the optimized IDR DP7 recruited neutrophils, monocytes and macrophages to the site of infection. The adjuvant, comprising the DP7 and CpG oligonucleotide (CpG), induced chemokine/cytokine expression, enhanced the antigen uptake by dendritic cells and upregulated surface marker expression in dendritic cells. Vaccination with the NY-ESO-1 or OVA antigens combined with the adjuvant alum/CpG/DP7 strongly suppressed tumor growth in mice which was due to the improvement of antigen-specific humoral and cellular immunity. Regarding the mechanism of action, GPR35 may be the potential interaction partner of DP7. Our study revealed the potential application of the screening and evaluation system as a strategy for rationally designing effective IDRs or composite adjuvants and identifying their mechanism of action.
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Piyadasa H, Hemshekhar M, Osawa N, Lloyd D, Altieri A, Basu S, Krokhin OV, Halayko AJ, Mookherjee N. Disrupting Tryptophan in the Central Hydrophobic Region Selectively Mitigates Immunomodulatory Activities of the Innate Defence Regulator Peptide IDR-1002. J Med Chem 2021; 64:6696-6705. [PMID: 33974425 DOI: 10.1021/acs.jmedchem.0c02065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Innate defense regulator (IDR) peptides show promise as immunomodulatory therapeutics. However, there is limited understanding of the relationship of IDR peptide sequence and/or structure with its immunomodulatory activity. We previously reported that an IDR peptide, IDR-1002, reduces airway hyperresponsiveness (AHR) and inflammation in a house dust mite (HDM)-challenged murine model of airway inflammation. Here, we examined the sequence-to-function relationship of IDR-1002 in HDM-challenged mice and human bronchial epithelial cells (HBEC). We demonstrated that the tryptophan (W8) in the central hydrophobic region of IDR-1002 is required for the peptide to (i) suppress the pro-inflammatory cytokine IL-33, and induce anti-inflammatory mediators IL-1RA and stanniocalcin-1 in HBEC, and (ii) reduce IL-33 abundance, and eosinophil and neutrophil infiltration, in the lungs of HDM-challenged mice, without affecting the capacity to improve AHR, suggesting multimodal activity in vivo. Findings from this study can be used to design IDR peptides with targeted impact on immunomodulation and pathophysiology in respiratory diseases.
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Affiliation(s)
- Hadeesha Piyadasa
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba R3E3P4, Canada.,Department of Immunology, University of Manitoba, Winnipeg, Manitoba R3E0T5, Canada.,Department of Pathology, School of Medicine, Stanford University, Palo Alto, California 94304, United States
| | - Mahadevappa Hemshekhar
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba R3E3P4, Canada
| | - Natasha Osawa
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba R3E3P4, Canada
| | - Dylan Lloyd
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba R3E3P4, Canada
| | - Anthony Altieri
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba R3E3P4, Canada.,Department of Immunology, University of Manitoba, Winnipeg, Manitoba R3E0T5, Canada
| | - Sujata Basu
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba R3E0J9, Canada.,Biology of Breathing Group, The Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba R3E3P4, Canada
| | - Oleg V Krokhin
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba R3E3P4, Canada
| | - Andrew J Halayko
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba R3E0J9, Canada.,Biology of Breathing Group, The Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba R3E3P4, Canada
| | - Neeloffer Mookherjee
- Manitoba Centre for Proteomics and Systems Biology, Department of Internal Medicine, University of Manitoba, Winnipeg, Manitoba R3E3P4, Canada.,Department of Immunology, University of Manitoba, Winnipeg, Manitoba R3E0T5, Canada.,Biology of Breathing Group, The Children's Hospital Research Institute of Manitoba, Winnipeg, Manitoba R3E3P4, Canada
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45
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Nagasundarapandian S, Cho HS, Prathap S, Kang M, Choi M, Lee Y, Jeon H, Song H, Kim JH, Park C. Cathelicidin ΔPb-CATH4 derived from Python bivittatus accelerates the healing of Staphylococcus aureus-infected wounds in mice. Amino Acids 2021; 53:313-317. [PMID: 33576904 DOI: 10.1007/s00726-021-02948-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 01/27/2021] [Indexed: 10/22/2022]
Abstract
The effects of ΔPb-CATH4, a cathelicidin derived from Python bivittatus, were evaluated against Staphylococcus aureus-infected wounds in mice. These effects were comparable to those of classical antibiotics. ΔPb-CATH4 was resistant to bacterial protease but not to porcine trypsin. A reduction in the level of inflammatory cytokines and an increase in the migration of immune cells was observed in vitro. Thus, ΔPb-CATH4 can promote wound healing by controlling infections including those caused by multidrug-resistant bacteria via its immunomodulatory effects.
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Affiliation(s)
| | - Hye-Sun Cho
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Hwayang-dong, Seoul, 05029, Korea
| | - Somasundaram Prathap
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Hwayang-dong, Seoul, 05029, Korea
| | - Mingue Kang
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Hwayang-dong, Seoul, 05029, Korea
| | - Munjeong Choi
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Hwayang-dong, Seoul, 05029, Korea
| | - Yunjung Lee
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Hwayang-dong, Seoul, 05029, Korea
| | - Hyoim Jeon
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Hwayang-dong, Seoul, 05029, Korea
| | - Hyuk Song
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Hwayang-dong, Seoul, 05029, Korea
| | - Jin-Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Hwayang-dong, Seoul, 05029, Korea
| | - Chankyu Park
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Hwayang-dong, Seoul, 05029, Korea.
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46
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Park B, Liu GY. Immune-Based Anti-Staphylococcal Therapeutic Approaches. Microorganisms 2021; 9:microorganisms9020328. [PMID: 33562054 PMCID: PMC7915210 DOI: 10.3390/microorganisms9020328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/02/2021] [Accepted: 02/03/2021] [Indexed: 12/20/2022] Open
Abstract
Widespread methicillin-resistant Staphylococcus aureus (S. aureus) infections within community and healthcare settings are responsible for accelerated development of antibiotic resistance. As the antibiotic pipeline began drying up, alternative strategies were sought for future treatment of S. aureus infections. Here, we review immune-based anti-staphylococcal strategies that, unlike conventional antibiotics, target non-essential gene products elaborated by the pathogen. These strategies stimulate narrow or broad host immune mechanisms that are critical for anti-staphylococcal defenses. Alternative approaches aim to disrupt bacterial virulence mechanisms that enhance pathogen survival or induce immunopathology. Although immune-based therapeutics are unlikely to replace antibiotics in patient treatment in the near term, they have the potential to significantly improve upon the performance of antibiotics for treatment of invasive staphylococcal diseases.
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Affiliation(s)
- Bonggoo Park
- Cedars Sinai Medical Center, Division of Pediatric Infectious Diseases and the Immunobiology Research Institute, Los Angeles, CA 90048, USA;
| | - George Y. Liu
- Department of Pediatrics, University of California San Diego, La Jolla, CA 92093, USA
- Correspondence:
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47
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Ryu M, Park J, Yeom JH, Joo M, Lee K. Rediscovery of antimicrobial peptides as therapeutic agents. J Microbiol 2021; 59:113-123. [PMID: 33527313 DOI: 10.1007/s12275-021-0649-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 12/23/2020] [Indexed: 02/07/2023]
Abstract
In recent years, the occurrence of antibiotic-resistant pathogens is increasing rapidly. There is growing concern as the development of antibiotics is slower than the increase in the resistance of pathogenic bacteria. Antimicrobial peptides (AMPs) are promising alternatives to antibiotics. Despite their name, which implies their antimicrobial activity, AMPs have recently been rediscovered as compounds having antifungal, antiviral, anticancer, antioxidant, and insecticidal effects. Moreover, many AMPs are relatively safe from toxic side effects and the generation of resistant microorganisms due to their target specificity and complexity of the mechanisms underlying their action. In this review, we summarize the history, classification, and mechanisms of action of AMPs, and provide descriptions of AMPs undergoing clinical trials. We also discuss the obstacles associated with the development of AMPs as therapeutic agents and recent strategies formulated to circumvent these obstacles.
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Affiliation(s)
- Minkyung Ryu
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Jaeyeong Park
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Ji-Hyun Yeom
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea.
| | - Minju Joo
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea.
| | - Kangseok Lee
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea.
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48
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Shao C, Zhu Y, Jian Q, Lai Z, Tan P, Li G, Shan A. Cross-Strand Interaction, Central Bending, and Sequence Pattern Act as Biomodulators of Simplified β-Hairpin Antimicrobial Amphiphiles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2003899. [PMID: 33354914 DOI: 10.1002/smll.202003899] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 11/19/2020] [Indexed: 06/12/2023]
Abstract
Novel antimicrobial peptides (AMPs) have revolutionarily evolved into formidable candidates for antibiotic substitute materials against pathogenic infections. However, cost, lability, disorderly sequences, systemic toxicology, and biological profiles have plagued the perennial search. Here, a progressive β-hairpin solution with the simplest formulation is implanted into an AMP-based therapeutic strategy to systematically reveal the complex balance between function and toxicity of structural moieties, including cationicity, hydrophobicity, cross-strand interactions, center bending, and sequence pattern. Comprehensive implementation of structural identification, ten microorganisms, eleven in vitro barriers, four mammalian cells, and a diversified membrane operation setup led to the emergence of β-hairpin prototypes from a 24-member library. Lead amphiphiles, WKF-PG and WRF-NG, can tackle bacterial infection through direct antimicrobial efficacy and potential inflammation-limiting capabilities, such as an Escherichia coli challenge in a mouse peritonitis-sepsis model, without observed toxicity after systemic administration. Their optimal states with dissimilar modulators and the unavailable drug resistance related to membrane lytic mechanisms, also provide an usher for renewed innovation among β-sheet peptide-based antimicrobial biomaterials.
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Affiliation(s)
- Changxuan Shao
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Yongjie Zhu
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Qiao Jian
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Zhenheng Lai
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Peng Tan
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Guoyu Li
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, 150030, P. R. China
| | - Anshan Shan
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin, 150030, P. R. China
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49
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Qiu H, Si Z, Luo Y, Feng P, Wu X, Hou W, Zhu Y, Chan-Park MB, Xu L, Huang D. The Mechanisms and the Applications of Antibacterial Polymers in Surface Modification on Medical Devices. Front Bioeng Biotechnol 2020; 8:910. [PMID: 33262975 PMCID: PMC7686044 DOI: 10.3389/fbioe.2020.00910] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 07/15/2020] [Indexed: 01/04/2023] Open
Abstract
Medical device contamination caused by microbial pathogens such as bacteria and fungi has posed a severe threat to the patients' health in hospitals. Due to the increasing resistance of pathogens to antibiotics, the efficacy of traditional antibiotics treatment is gradually decreasing for the infection treatment. Therefore, it is urgent to develop new antibacterial drugs to meet clinical or civilian needs. Antibacterial polymers have attracted the interests of researchers due to their unique bactericidal mechanism and excellent antibacterial effect. This article reviews the mechanism and advantages of antimicrobial polymers and the consideration for their translation. Their applications and advances in medical device surface coating were also reviewed. The information will provide a valuable reference to design and develop antibacterial devices that are resistant to pathogenic infections.
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Affiliation(s)
- Haofeng Qiu
- School of Medicine, Ningbo University, Ningbo, China
| | - Zhangyong Si
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
| | - Yang Luo
- School of Medicine, Ningbo University, Ningbo, China
| | - Peipei Feng
- School of Medicine, Ningbo University, Ningbo, China
| | - Xujin Wu
- School of Medicine, Ningbo University, Ningbo, China
| | - Wenjia Hou
- School of Medicine, Ningbo University, Ningbo, China
| | - Yabin Zhu
- School of Medicine, Ningbo University, Ningbo, China
| | - Mary B. Chan-Park
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, Singapore
| | - Long Xu
- Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, China
| | - Dongmei Huang
- Ningbo Baoting Biotechnology Co., Ltd., Ningbo, China
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50
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Etayash H, Qian Y, Pletzer D, Zhang Q, Xie J, Cui R, Dai C, Ma P, Qi F, Liu R, Hancock REW. Host Defense Peptide-Mimicking Amphiphilic β-Peptide Polymer (Bu:DM) Exhibiting Anti-Biofilm, Immunomodulatory, and in Vivo Anti-Infective Activity. J Med Chem 2020; 63:12921-12928. [PMID: 33126797 DOI: 10.1021/acs.jmedchem.0c01321] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Therapeutic options to treat multidrug resistant bacteria, especially when present in biofilms, are limited due to their high levels of antibiotic resistance. Here, we report the anti-biofilm and immunomodulatory activities of the host defense peptide (HDP)-mimicking β-peptide polymer (20:80 Bu:DM) and investigated its activity in vivo. The polymer outperformed antibiotics in the removal and reduction of the viability of established biofilms, achieving a maximum activity of around 80% reduction in viability. Interestingly the polymer also exhibited HDP-like immunomodulation in inducing chemokines and anti-inflammatory cytokines and suppressing lipopolysaccharide-induced proinflammatory cytokines. When tested in a murine, high-density skin infection model using P. aeruginosa LESB58, the polymer was effective in diminishing abscess size and reducing bacterial load. This study demonstrates the dual functionality of HDP-mimicking β-peptide polymers in inhibiting biofilms and modulating innate immunity, as well as reducing tissue dermonecrosis.
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Affiliation(s)
- Hashem Etayash
- Centre for Microbial Diseases and Immunity Research, Department of Microbiology and Immunology, University of British Columbia, 2259 Lower Mall Research Station, Vancouver, British Columbia V6T 1Z4, Canada
| | - Yuxin Qian
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Daniel Pletzer
- Centre for Microbial Diseases and Immunity Research, Department of Microbiology and Immunology, University of British Columbia, 2259 Lower Mall Research Station, Vancouver, British Columbia V6T 1Z4, Canada.,Department of Microbiology and Immunology, University of Otago, 720 Cumberland Street, Dunedin 9054, New Zealand
| | - Qiang Zhang
- Key Laboratory for Ultrafine Materials of Ministry of Education, 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
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ruxin Cui
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Chengzhi Dai
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Pengcheng Ma
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Fan Qi
- State Key Laboratory of Bioreactor 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, 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
| | - Robert E W Hancock
- Centre for Microbial Diseases and Immunity Research, Department of Microbiology and Immunology, University of British Columbia, 2259 Lower Mall Research Station, Vancouver, British Columbia V6T 1Z4, Canada
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