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Wang H, Nie Y, Sun Z, He Y, Yang J. Serum amyloid P component: Structure, biological activity, and application in diagnosis and treatment of immune-associated diseases. Mol Immunol 2024; 172:1-8. [PMID: 38850776 DOI: 10.1016/j.molimm.2024.05.009] [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: 03/21/2024] [Revised: 05/09/2024] [Accepted: 05/21/2024] [Indexed: 06/10/2024]
Abstract
Serum amyloid P component (SAP) is a member the innate immune humoral arm and participated in various processes, including the innate immune responses, tissue remodeling, and the pathogenesis of inflammatory diseases. Remarkably, SAP is a highly versatile immunomodulatory factor that can serve as a drug target for treating amyloid diseases and reduce inflammation, fibrosis degree, and respiratory disease. In this review, we focus on the biological activities of SAP and its application in different systemic immune-associated diseases. First, we reviewed the regulatory effects of SAP on innate immune cells and possible mechanisms. Second, we emphasized SAP as a diagnostic marker and therapeutic target for immune-associated diseases, including the neuropsychiatric disorders. Third, we presented several recommendations for regulating SAP in immune cell function and potential areas for future research. Some authorities consider SAP to be a pattern recognition molecule that plays multiple roles in the innate immune system and inflammation. Developing therapeutics that target SAP or its associated signaling pathways may be a promising strategy for treating immune-associated diseases.
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Affiliation(s)
- Haixia Wang
- Beijing Key Laboratory of Mental Disorders, National Clinical Research Center for Mental Disorders National Center for Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
| | - Yadan Nie
- Beijing Key Laboratory of Mental Disorders, National Clinical Research Center for Mental Disorders National Center for Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
| | - Zuoli Sun
- Beijing Key Laboratory of Mental Disorders, National Clinical Research Center for Mental Disorders National Center for Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China
| | - Yi He
- Beijing Key Laboratory of Mental Disorders, National Clinical Research Center for Mental Disorders National Center for Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China.
| | - Jian Yang
- Beijing Key Laboratory of Mental Disorders, National Clinical Research Center for Mental Disorders National Center for Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China; Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing 100069, China.
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2
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Gonçalves SM, Pereira I, Feys S, Cunha C, Chamilos G, Hoenigl M, Wauters J, van de Veerdonk FL, Carvalho A. Integrating genetic and immune factors to uncover pathogenetic mechanisms of viral-associated pulmonary aspergillosis. mBio 2024; 15:e0198223. [PMID: 38651925 PMCID: PMC11237550 DOI: 10.1128/mbio.01982-23] [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] [Indexed: 04/25/2024] Open
Abstract
Invasive pulmonary aspergillosis is a severe fungal infection primarily affecting immunocompromised patients. Individuals with severe viral infections have recently been identified as vulnerable to developing invasive fungal infections. Both influenza-associated pulmonary aspergillosis (IAPA) and COVID-19-associated pulmonary aspergillosis (CAPA) are linked to high mortality rates, emphasizing the urgent need for an improved understanding of disease pathogenesis to unveil new molecular targets with diagnostic and therapeutic potential. The recent establishment of animal models replicating the co-infection context has offered crucial insights into the mechanisms that underlie susceptibility to disease. However, the development and progression of human viral-fungal co-infections exhibit a significant degree of interindividual variability, even among patients with similar clinical conditions. This observation implies a significant role for host genetics, but information regarding the genetic basis for viral-fungal co-infections is currently limited. In this review, we discuss how genetic factors known to affect either antiviral or antifungal immunity could potentially reveal pathogenetic mechanisms that predispose to IAPA or CAPA and influence the overall disease course. These insights are anticipated to foster further research in both pre-clinical models and human patients, aiming to elucidate the complex pathophysiology of viral-associated pulmonary aspergillosis and contributing to the identification of new diagnostic and therapeutic targets to improve the management of these co-infections.
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Affiliation(s)
- Samuel M Gonçalves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Guimarães/Braga, Portugal
| | - Inês Pereira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Guimarães/Braga, Portugal
| | - Simon Feys
- Medical Intensive Care Unit, Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Cristina Cunha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Guimarães/Braga, Portugal
| | - Georgios Chamilos
- Laboratory of Clinical Microbiology and Microbial Pathogenesis, School of Medicine, University of Crete, Heraklion, Crete, Greece
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, Heraklion, Crete, Greece
| | - Martin Hoenigl
- Division of Infectious Diseases, ECMM Excellence Center for Medical Mycology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
- BioTechMed, Graz, Austria
| | - Joost Wauters
- Medical Intensive Care Unit, Department of General Internal Medicine, University Hospitals Leuven, Leuven, Belgium
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Frank L van de Veerdonk
- Department of Internal Medicine, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
- Radboud Center for Infectious Diseases (RCI), Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| | - Agostinho Carvalho
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Guimarães/Braga, Portugal
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Li F, Liu B, Xiong Y, Zhang Z, Zhang Q, Qiu R, Peng F, Nian X, Wu D, Li X, Liu J, Li Z, Tu H, Wu W, Wang Y, Zhang J, Yang X. Enhanced Downstream Processing for a Cell-Based Avian Influenza (H5N1) Vaccine. Vaccines (Basel) 2024; 12:138. [PMID: 38400122 PMCID: PMC10891636 DOI: 10.3390/vaccines12020138] [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: 11/24/2023] [Revised: 01/17/2024] [Accepted: 01/25/2024] [Indexed: 02/25/2024] Open
Abstract
H5N1 highly pathogenic avian influenza virus (HPAIV) infections pose a significant threat to human health, with a mortality rate of around 50%. Limited global approval of H5N1 HPAIV vaccines, excluding China, prompted the need to address safety concerns related to MDCK cell tumorigenicity. Our objective was to improve vaccine safety by minimizing residual DNA and host cell protein (HCP). We developed a downstream processing method for the cell-based H5N1 HPAIV vaccine, employing CaptoTM Core 700, a multimodal resin, for polishing. Hydrophobic-interaction chromatography (HIC) with polypropylene glycol as a functional group facilitated the reversible binding of virus particles for capture. Following the two-step chromatographic process, virus recovery reached 68.16%. Additionally, HCP and DNA levels were reduced to 2112.60 ng/mL and 6.4 ng/mL, respectively. Western blot, high-performance liquid chromatography (HPLC), and transmission electron microscopy (TEM) confirmed the presence of the required antigen with a spherical shape and appropriate particle size. Overall, our presented two-step downstream process demonstrates potential as an efficient and cost-effective platform technology for cell-based influenza (H5N1 HPAIV) vaccines.
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Affiliation(s)
- Fang Li
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Bo Liu
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Yu Xiong
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Zhegang Zhang
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Qingmei Zhang
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Ran Qiu
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Feixia Peng
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Xuanxuan Nian
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Dongping Wu
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Xuedan Li
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Jing Liu
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Ze Li
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Hao Tu
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Wenyi Wu
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Yu Wang
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Jiayou Zhang
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
| | - Xiaoming Yang
- National Engineering Technology Research Center for Combined Vaccines, Wuhan 430207, China; (F.L.); (B.L.); (Y.X.); (Z.Z.); (Q.Z.); (R.Q.); (F.P.); (X.N.); (D.W.); (X.L.); (J.L.); (Z.L.); (H.T.); (W.W.); (Y.W.)
- Wuhan Institute of Biological Products Co., Ltd., Wuhan 430207, China
- National Key Laboratory for Novel Vaccines Research, Development of Emerging Infectious Diseases, Wuhan 430207, China
- Hubei Provincial Vaccine Technology Innovation Center, Wuhan 430207, China
- China National Biotec Group Company Limited, Beijing 100029, China
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Li M, Arjomandi A, Sun X, Lu E, Tyagi T, Lin W, Fischer SK, Kaur S, Xu K. Novel Selective Quantification of Zinpentraxin Alfa Biotherapeutic in the Presence of Endogenous Isomer in Plasma Samples of Idiopathic Pulmonary Fibrosis Patients Using Immunoaffinity LC-MS. AAPS J 2023; 26:9. [PMID: 38114736 DOI: 10.1208/s12248-023-00878-3] [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: 10/13/2023] [Accepted: 12/04/2023] [Indexed: 12/21/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive fatal interstitial lung disease that affects three million patients worldwide and currently without an effective cure. Zinpentraxin alfa, a recombinant human pentraxin-2 (rhPTX-2) protein, has been evaluated as a potential drug candidate for the treatment of IPF. Clinical pharmacokinetic analysis of zinpentraxin alfa has been challenging historically due to interference from serum amyloid P component (SAP), an endogenous human pentraxin-2 protein. These molecules share an identical primary amino acid sequence and glycan composition; however, zinpentraxin alfa possesses α2,3-linked terminal sialic acid residues while SAP is an α2,6-linked isomer. By taking advantage of this only structural difference, we developed a novel assay strategy where α2,3-sialidase was used to selectively hydrolyze α2,3-linked sialic acid residues, resulting in desialylated zinpentraxin alfa versus unchanged sialylated SAP, following an immunoaffinity capture step. Subsequent tryptic digestion produced a unique surrogate asialo-glycopeptide from zinpentraxin alfa and allowed specific quantification of the biotherapeutic in human plasma. In addition, a common peptide shared by both molecules was selected as a surrogate to determine total hPTX-2 concentrations, i.e., sum of zinpentraxin alfa and SAP. The quantification methods for both zinpentraxin alfa and total hPTX-2 were validated and used in pharmacokinetic assessment in IPF patients. The preliminary results suggest that endogenous SAP levels remained largely constant in IPF patients throughout the treatment with zinpentraxin alfa. Our novel approach provides a general bioanalytical strategy to selectively quantify α2,3-sialylated glycoproteins in the presence of their corresponding α2,6-linked isomers.
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Affiliation(s)
- Maoyin Li
- BioAnalytical Sciences, Genentech Inc., South San Francisco, California, 94080, USA
| | - Audrey Arjomandi
- BioAnalytical Sciences, Genentech Inc., South San Francisco, California, 94080, USA
| | - Xiaowei Sun
- Bioanalytical Services, Frontage Laboratories, Inc., 700 Pennsylvania Drive, Exton, Pennsylvania, 19341, USA
| | - Erhu Lu
- Bioanalytical Services, Frontage Laboratories, Inc., 700 Pennsylvania Drive, Exton, Pennsylvania, 19341, USA
| | - Tulika Tyagi
- Antibody Engineering, Genentech Inc., South San Francisco, California, 94080, USA
| | - WeiYu Lin
- Antibody Engineering, Genentech Inc., South San Francisco, California, 94080, USA
| | - Saloumeh K Fischer
- BioAnalytical Sciences, Genentech Inc., South San Francisco, California, 94080, USA
| | - Surinder Kaur
- BioAnalytical Sciences, Genentech Inc., South San Francisco, California, 94080, USA
| | - Keyang Xu
- BioAnalytical Sciences, Genentech Inc., South San Francisco, California, 94080, USA.
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Wang Y, Chen W, Ding S, Wang W, Wang C. Pentraxins in invertebrates and vertebrates: From structure, function and evolution to clinical applications. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 149:105064. [PMID: 37734429 DOI: 10.1016/j.dci.2023.105064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/18/2023] [Accepted: 09/18/2023] [Indexed: 09/23/2023]
Abstract
The immune system is divided into two broad categories, consisting of innate and adaptive immunity. As recognition and effector factors of innate immunity and regulators of adaptive immune responses, lectins are considered to be important defense chemicals against microbial pathogens, cell trafficking, immune regulation, and prevention of autoimmunity. Pentraxins, important members of animal lectins, play a significant role in protecting the body from pathogen infection and regulating inflammatory reactions. They can recognize and bind to a variety of ligands, including carbohydrates, lipids, proteins, nucleic acids and their complexes, and protect the host from pathogen invasion by activating the complement cascade and Fcγ receptor pathways. Based on the primary structure of the subunit, pentraxins are divided into short and long pentraxins. The short pentraxins are comprised of C-reactive protein (CRP) and serum amyloid P (SAP), and the most important member of the long pentraxins is pentraxin 3 (PTX3). The CRP and SAP exist in both vertebrates and invertebrates, while the PTX3 may be present only in vertebrates. The major ligands and functions of CRP, SAP and PTX3 and three activation pathways involved in the complement system are summarized in this review. Their different characteristics in various animals including humans, and their evolutionary trees are analyzed. The clinical applications of CRP, SAP and PTX3 in human are reviewed. Some questions that remain to be understood are also highlighted.
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Affiliation(s)
- Yuying Wang
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China
| | - Wei Chen
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China; Yantai Productivity Promotion Center, Yantai, 264003, People's Republic of China
| | - Shuo Ding
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China
| | - Wenjun Wang
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China
| | - Changliu Wang
- School of Life Sciences, Ludong University, Yantai, 264025, People's Republic of China.
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Okuda M, Sakai-Tagawa Y, Koga M, Koibuchi T, Kikuchi T, Adachi E, Ahyoung Lim L, Yamamoto S, Yotsuyanagi H, Negishi K, Jubishi D, Yamayoshi S, Kawaoka Y. Immunological Correlates of Prevention of the Onset of Seasonal H3N2 Influenza. J Infect Dis 2022; 226:1800-1808. [PMID: 35478039 PMCID: PMC10205605 DOI: 10.1093/infdis/jiac152] [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: 12/21/2021] [Accepted: 04/21/2022] [Indexed: 12/16/2022] Open
Abstract
On influenza virus infection or vaccination, immune responses occur, including the production of antibodies with various functions that contribute to protection from seasonal influenza virus infection. In the current study, we attempted to identify the antibody functions that play a central role in preventing the onset of seasonal influenza by comparing the levels of several antibody titers for different antibody functions between 5 subclinically infected individuals and 16 patients infected with seasonal H3N2 virus. For antibody titers before influenza virus exposure, we found that the nAb titers and enzyme-linked immunosorbent assay titers against hemagglutinin and neuraminidase (NA) proteins in the subclinically infected individuals were significantly higher than those in the patients, whereas the NA inhibition titers and antibody-dependent cellular cytotoxicity activities did not significantly differ between subclinically infected individuals and infected patients. These results suggest that nAb and enzyme-linked immunosorbent assay titers against hemagglutinin and NA serve as correlates of symptomatic influenza infection.
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Affiliation(s)
- Moe Okuda
- Department of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Yuko Sakai-Tagawa
- Department of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- International Research Center for Infectious Diseases, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Michiko Koga
- Division of Infectious Diseases, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Tomohiko Koibuchi
- Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of Institute of Medical Science, the University of Tokyo, Tokyo, Japan
| | - Tadashi Kikuchi
- Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of Institute of Medical Science, the University of Tokyo, Tokyo, Japan
| | - Eisuke Adachi
- Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of Institute of Medical Science, the University of Tokyo, Tokyo, Japan
| | - Lay Ahyoung Lim
- Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of Institute of Medical Science, the University of Tokyo, Tokyo, Japan
| | - Shinya Yamamoto
- Department of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- Division of Infectious Diseases, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Hiroshi Yotsuyanagi
- Division of Infectious Diseases, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of Institute of Medical Science, the University of Tokyo, Tokyo, Japan
| | - Kyota Negishi
- Tokyo Health Cooperative Association, Nezu Clinic, Tokyo, Japan
| | - Daisuke Jubishi
- Tokyo Health Cooperative Association, Nezu Clinic, Tokyo, Japan
- Department of Infectious Diseases, The University of Tokyo Hospital, Tokyo, Japan
| | - Seiya Yamayoshi
- Department of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- International Research Center for Infectious Diseases, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
| | - Yoshihiro Kawaoka
- Department of Virology, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- International Research Center for Infectious Diseases, Institute of Medical Science, University of Tokyo, Tokyo, Japan
- The Research Center for Global Viral Diseases, National Center for Global Health and Medicine Research Institute, Tokyo, Japan
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
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Varghese PM, Kishore U, Rajkumari R. Innate and adaptive immune responses against Influenza A Virus: Immune evasion and vaccination strategies. Immunobiology 2022; 227:152279. [DOI: 10.1016/j.imbio.2022.152279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 08/31/2022] [Accepted: 09/07/2022] [Indexed: 11/25/2022]
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8
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Mukherjee S, Saha B, Tripathi A. Clinical significance of differential serum-signatures for early prediction of severe dengue among Eastern Indian patients. Clin Exp Immunol 2022; 208:72-82. [PMID: 35348620 PMCID: PMC9113256 DOI: 10.1093/cei/uxac018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 02/10/2022] [Indexed: 01/12/2023] Open
Abstract
Dengue infection can result in simple dengue fever or life-threatening severe dengue. Early identification of severe patients is needed for proper disease management. Dengue infection was screened among 168 symptomatic patients by qRT-PCR, anti-dengue IgM, and IgG ELISA. Dengue patients were categorized according to WHO classification. Viral load and dengue serotypes were determined by qRT-PCR. Levels of acute-phase-proteins (SAP, SAA2; CRP and ApoA1), endothelial (Ang2, VEGF), coagulation (fibrinogen) markers were determined by sandwich ELISA/immunoturbidimetry/western-blotting. Hepatic (ALT, AST, ALP) and other blood biochemical parameters were studied by autoanalyzer and haematology cell counter. Statistical analysis and protein-protein-interaction network were performed by GraphPad-Prism and STRINGS database, respectively. Among 87 dengue patients, significantly higher levels of Ang2, VEGF, CRP, SAA2, ApoA1, AST, ALT, and AST/ALT ratio and low level of fibrinogen were detected in severe-dengue cases compared to dengue without warning-signs, with seven of them severely altered during febrile-phase. Higher fold-change of Ang2 and VEGF as well as decreased fibrinogen were observed among patients with haemorrhagic-manifestation, clinical-fluid accumulation and thrombocytopenia. Functional network analysis predicted Ang2, VEGF, and CRP to be functionally and physically connected and SAA2 and ApoA1 to be functioning together. Correlation analyses also validated this connectivity by a strong positive correlation between Ang2, VEGF, and CRP. PCA analysis followed by hierarchical clustering heatmap analysis segregated severe-dengue patients from the rest, with VEGF, Ang2, ApoA1, AST, and ALT clearly distinguishing the severe-dengue group. Thus, serum levels of VEGF, Ang2, ApoA1, AST, and ALT might act as potential biomarkers for predicting dengue severity during the early stage.
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Affiliation(s)
- Saikat Mukherjee
- Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, Kolkata, West Bengal, India
| | - Bibhuti Saha
- Department of Tropical Medicine, Calcutta School of Tropical Medicine, Kolkata, West Bengal, India
| | - Anusri Tripathi
- Department of Biochemistry and Medical Biotechnology, Calcutta School of Tropical Medicine, Kolkata, West Bengal, India
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9
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Smet A, Catani JPP, Ysenbaert T, Gonçalves A, Kleanthous H, Vogel TU, Saelens X, Job ER. Antibodies directed towards neuraminidase restrict influenza virus replication in primary human bronchial epithelial cells. PLoS One 2022; 17:e0262873. [PMID: 35100294 PMCID: PMC8803191 DOI: 10.1371/journal.pone.0262873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 01/06/2022] [Indexed: 11/18/2022] Open
Abstract
Influenza neuraminidase (NA) is implicated in various aspects of the virus replication cycle and therefore is an attractive target for vaccination and antiviral strategies. Here we investigated the potential for NA-specific antibodies to interfere with A(H1N1)pdm09 replication in primary human airway epithelial (HAE) cells. Mouse polyclonal anti-NA sera and a monoclonal antibody could block initial viral entry into HAE cells as well as egress from the cell surface. NA-specific polyclonal serum also reduced virus replication across multiple rounds of infection. Restriction of virus entry correlated with the ability of the serum or monoclonal antibody to mediate neuraminidase inhibition (NI). Finally, human sera with NI activity against the N1 of A(H1N1)pdm09 could decrease H6N1 virus infection of HAE cells, highlighting the potential contribution of anti-NA antibodies in the control of influenza virus infection in humans.
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Affiliation(s)
- Anouk Smet
- VIB-UGent Medical Biotechnology Centre, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Joao Paulo Portela Catani
- VIB-UGent Medical Biotechnology Centre, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Tine Ysenbaert
- VIB-UGent Medical Biotechnology Centre, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Amanda Gonçalves
- VIB BioImaging Core, Ghent, Belgium
- VIB-UGent Center for Inflammation Research, Ghent, Belgium
| | - Harry Kleanthous
- Sanofi Pasteur, Research North America, Cambridge, Massachusetts, United States of America
| | - Thorsten U. Vogel
- Sanofi Pasteur, Research North America, Cambridge, Massachusetts, United States of America
| | - Xavier Saelens
- VIB-UGent Medical Biotechnology Centre, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
- * E-mail:
| | - Emma R. Job
- VIB-UGent Medical Biotechnology Centre, VIB, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
- Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
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10
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Parente R, Possetti V, Erreni M, D'Autilia F, Bottazzi B, Garlanda C, Mantovani A, Inforzato A, Doni A. Complementary Roles of Short and Long Pentraxins in the Complement-Mediated Immune Response to Aspergillus fumigatus Infections. Front Immunol 2021; 12:785883. [PMID: 34868070 PMCID: PMC8637271 DOI: 10.3389/fimmu.2021.785883] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 11/01/2021] [Indexed: 01/08/2023] Open
Abstract
The ubiquitous mold Aspergillus fumigatus is the major etiologic agent of invasive aspergillosis, a life-threatening infection amongst immune compromised individuals. An increasing body of evidence indicates that effective disposal of A. fumigatus requires the coordinate action of both cellular and humoral components of the innate immune system. Early recognition of the fungal pathogen, in particular, is mediated by a set of diverse soluble pattern recognition molecules (PRMs) that act as "ancestral antibodies" inasmuch as they are endowed with opsonic, pro-phagocytic and killing properties. Pivotal is, in this respect, the contribution of the complement system, which functionally cooperates with cell-borne pattern recognition receptors (PRRs) and other soluble PRMs, including pentraxins. Indeed, complement and pentraxins form an integrated system with crosstalk, synergism, and regulation, which stands as a paradigm of the interplay between PRMs in the mounting and orchestration of antifungal immunity. Following upon our past experience with the long pentraxin PTX3, a well-established immune effector in the host response to A. fumigatus, we recently reported that this fungal pathogen is targeted in vitro and in vivo by the short pentraxin Serum Amyloid P component (SAP) too. Similar to PTX3, SAP promotes phagocytosis and disposal of the fungal pathogen via complement-dependent pathways. However, the two proteins exploit different mechanisms of complement activation and receptor-mediated phagocytosis, which further extends complexity and integration of the complement-pentraxin crosstalk in the immune response to A. fumigatus. Here we revisit this crosstalk in light of the emerging roles of SAP as a novel PRM with antifungal activity.
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Affiliation(s)
- Raffaella Parente
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Humanitas Research Hospital, Milan, Italy
| | - Valentina Possetti
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Humanitas Research Hospital, Milan, Italy
| | - Marco Erreni
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Humanitas Research Hospital, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Francesca D'Autilia
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Humanitas Research Hospital, Milan, Italy
| | - Barbara Bottazzi
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Humanitas Research Hospital, Milan, Italy
| | - Cecilia Garlanda
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Humanitas Research Hospital, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Alberto Mantovani
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Humanitas Research Hospital, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Milan, Italy.,The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Antonio Inforzato
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Humanitas Research Hospital, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Andrea Doni
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Humanitas Research Hospital, Milan, Italy
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11
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Doni A, Parente R, Laface I, Magrini E, Cunha C, Colombo FS, Lacerda JF, Campos A, Mapelli SN, Petroni F, Porte R, Schorn T, Inforzato A, Mercier T, Lagrou K, Maertens J, Lambris JD, Bottazzi B, Garlanda C, Botto M, Carvalho A, Mantovani A. Serum amyloid P component is an essential element of resistance against Aspergillus fumigatus. Nat Commun 2021; 12:3739. [PMID: 34145258 PMCID: PMC8213769 DOI: 10.1038/s41467-021-24021-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 05/24/2021] [Indexed: 01/09/2023] Open
Abstract
Serum amyloid P component (SAP, also known as Pentraxin 2; APCS gene) is a component of the humoral arm of innate immunity involved in resistance to bacterial infection and regulation of tissue remodeling. Here we investigate the role of SAP in antifungal resistance. Apcs-/- mice show enhanced susceptibility to A. fumigatus infection. Murine and human SAP bound conidia, activate the complement cascade and enhance phagocytosis by neutrophils. Apcs-/- mice are defective in vivo in terms of recruitment of neutrophils and phagocytosis in the lungs. Opsonic activity of SAP is dependent on the classical pathway of complement activation. In immunosuppressed mice, SAP administration protects hosts against A. fumigatus infection and death. In the context of a study of hematopoietic stem-cell transplantation, genetic variation in the human APCS gene is associated with susceptibility to invasive pulmonary aspergillosis. Thus, SAP is a fluid phase pattern recognition molecule essential for resistance against A. fumigatus.
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Affiliation(s)
- Andrea Doni
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy
| | - Raffaella Parente
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy
| | - Ilaria Laface
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy.,Department of Translational Medicine and for Romagna, University of Ferrara, Ferrara, Milan, Italy
| | - Elena Magrini
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy
| | - Cristina Cunha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Guimarães/Braga, Portugal
| | | | - João F Lacerda
- Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Lisboa, Portugal.,Serviço de Hematologia e Transplantação de Medula, Hospital de Santa Maria, Lisboa, Portugal
| | - António Campos
- Serviço de Transplantação de Medula Óssea (STMO), Instituto Português de Oncologia do Porto, Porto, Portugal
| | - Sarah N Mapelli
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy
| | - Francesca Petroni
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy
| | - Rémi Porte
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy
| | - Tilo Schorn
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy
| | - Antonio Inforzato
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, Milan, Italy
| | - Toine Mercier
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium.,Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Katrien Lagrou
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium.,Department of Laboratory Medicine and National Reference Centre for Mycosis, University Hospitals Leuven, Leuven, Belgium
| | - Johan Maertens
- Department of Hematology, University Hospitals Leuven, Leuven, Belgium.,Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - John D Lambris
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Barbara Bottazzi
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy
| | - Cecilia Garlanda
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy.,Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, Milan, Italy
| | - Marina Botto
- Department of Immunology and Inflammation, Imperial College London, London, UK
| | - Agostinho Carvalho
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.,ICVS/3B's-PT Government Associate Laboratory, Guimarães/Braga, Portugal
| | - Alberto Mantovani
- IRCCS Humanitas Research Hospital, via Manzoni 56, Rozzano, Milan, Italy. .,Department of Biomedical Sciences, Humanitas University, Via Rita Levi Montalcini 4, Pieve Emanuele, Milan, Italy. .,The William Harvey Research Institute, Queen Mary University of London, London, UK.
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12
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Popowski KD, Dinh PC, George A, Lutz H, Cheng K. Exosome therapeutics for COVID-19 and respiratory viruses. VIEW 2021; 2:20200186. [PMID: 34766162 PMCID: PMC7995024 DOI: 10.1002/viw.20200186] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/10/2020] [Accepted: 12/23/2020] [Indexed: 12/31/2022] Open
Abstract
Respiratory viral diseases are a leading cause of mortality in humans. They have proven to drive pandemic risk due to their complex transmission factors and viral evolution. However, the slow production of effective antiviral drugs and vaccines allows for outbreaks of these diseases, emphasizing a critical need for refined antiviral therapeutics. The delivery of exosomes, a naturally secreted extracellular vesicle, yields therapeutic effects for a variety of diseases, including viral infection. Exosomes and viruses utilize similar endosomal sorting pathways and mechanisms, providing exosomes with the potential to serve as a therapeutic that can target, bind, and suppress cellular uptake of various viruses including the novel severe acute respiratory syndrome coronavirus 2. Here, we review the relationship between exosomes and respiratory viruses, describe potential exosome therapeutics for viral infections, and summarize progress toward clinical translation for lung-derived exosome therapeutics.
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Affiliation(s)
- Kristen D. Popowski
- Department of Molecular Biomedical SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
- Comparative Medicine InstituteNorth Carolina State UniversityRaleighNorth CarolinaUSA
| | - Phuong‐Uyen C. Dinh
- Department of Molecular Biomedical SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
- Comparative Medicine InstituteNorth Carolina State UniversityRaleighNorth CarolinaUSA
| | - Arianna George
- Department of Molecular and Structural BiochemistryNorth Carolina State UniversityRaleighNorth CarolinaUSA
- Department of Biological SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
| | - Halle Lutz
- Department of Molecular Biomedical SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
- Comparative Medicine InstituteNorth Carolina State UniversityRaleighNorth CarolinaUSA
| | - Ke Cheng
- Department of Molecular Biomedical SciencesNorth Carolina State UniversityRaleighNorth CarolinaUSA
- Comparative Medicine InstituteNorth Carolina State UniversityRaleighNorth CarolinaUSA
- Joint Department of Biomedical EngineeringUniversity of North Carolina at Chapel Hill and North Carolina State UniversityRaleigh/Chapel HillNorth CarolinaUSA
- Division of Pharmacoengineering and Molecular PharmaceuticsUniversity of North Carolina at Chapel HillChapel HillNorth CarolinaUSA
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13
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Chen Z, Chen W, Wang Q, Qin Y, Wang X, Ma T, Zhang P, Li X, Wang X, Ding L, Li Z. Comparative analysis of sialic acid α2–3/6 galactose glycan-binding proteins in human saliva and serum. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129859] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Karhadkar TR, Pilling D, Gomer RH. Serum Amyloid P inhibits single stranded RNA-induced lung inflammation, lung damage, and cytokine storm in mice. PLoS One 2021; 16:e0245924. [PMID: 33481950 PMCID: PMC7822324 DOI: 10.1371/journal.pone.0245924] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 01/09/2021] [Indexed: 12/12/2022] Open
Abstract
SARS-CoV-2 is a single stranded RNA (ssRNA) virus and contains GU-rich sequences distributed abundantly in the genome. In COVID-19, the infection and immune hyperactivation causes accumulation of inflammatory immune cells, blood clots, and protein aggregates in lung fluid, increased lung alveolar wall thickness, and upregulation of serum cytokine levels. A serum protein called serum amyloid P (SAP) has a calming effect on the innate immune system and shows efficacy as a therapeutic for fibrosis in animal models and clinical trials. Here we show that aspiration of the GU-rich ssRNA oligonucleotide ORN06 into mouse lungs induces all of the above COVID-19-like symptoms. Men tend to have more severe COVID-19 symptoms than women, and in the aspirated ORN06 model, male mice tended to have more severe symptoms than female mice. Intraperitoneal injections of SAP starting from day 1 post ORN06 aspiration attenuated the ORN06-induced increase in the number of inflammatory cells and formation of clot-like aggregates in the mouse lung fluid, reduced ORN06-increased alveolar wall thickness and accumulation of exudates in the alveolar airspace, and attenuated an ORN06-induced upregulation of the inflammatory cytokines IL-1β, IL-6, IL-12p70, IL-23, and IL-27 in serum. SAP also reduced D-dimer levels in the lung fluid. In human peripheral blood mononuclear cells, SAP attenuated ORN06-induced extracellular accumulation of IL-6. Together, these results suggest that aspiration of ORN06 is a simple model for both COVID-19 as well as cytokine storm in general, and that SAP is a potential therapeutic for diseases with COVID-19-like symptoms and/or a cytokine storm.
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Affiliation(s)
- Tejas R. Karhadkar
- Department of Biology, Texas A&M University, College Station, Texas, United States of America
| | - Darrell Pilling
- Department of Biology, Texas A&M University, College Station, Texas, United States of America
| | - Richard H. Gomer
- Department of Biology, Texas A&M University, College Station, Texas, United States of America
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15
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White MR, Hsieh IN, De Luna X, Hartshorn KL. Effects of serum amyloid protein A on influenza A virus replication and viral interactions with neutrophils. J Leukoc Biol 2020; 110:155-166. [PMID: 33205458 PMCID: PMC7753654 DOI: 10.1002/jlb.4ab0220-116rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 10/13/2020] [Accepted: 10/26/2020] [Indexed: 01/22/2023] Open
Abstract
Innate immunity is vital for the early control of influenza A virus (IAV) infection. Serum amyloid A (SAA1) is an acute phase reactant produced in the liver and lung that rises dramatically during IAV infection. The potential role of SAA1 in host defense against IAV is unknown. SAA1 has been reported to directly activate neutrophils and to recruit them to the lung during infectious and inflammatory processes. Neutrophils are the most abundant cell recruited to the lung in the early phase of IAV infection. There are different forms and preparations of SAA1 that have found to have different effects on phagocyte responses, through various receptors. In this paper, we test the direct effects of various preparations of serum derived or recombinant SAA on IAV and how it modulates the interactions of IAV with neutrophils. All SAA preparations bound to IAV in vitro but caused minimal hemagglutination inhibition or viral aggregation. The human serum‐derived SAA1 or the complex of SAA1 with HDL did have IAV neutralizing activity in vitro, whereas the recombinant SAA1 preparations did not. We found that different SAA preparations also had markedly different effects on neutrophil functions, with E. coli‐derived SAA1 triggering some responses in neutrophils on its own or in presence of IAV whereas mammalian cell‐derived SAA1 did not. This discrepancy could be explained by the reported contamination of the former preparation with bacterial components. Of interest, however, serum SAA alone, serum SAA complexed with HDL, or HDL alone potentiated some neutrophil responses to IAV. Our results suggest that SAA may play some role in host response to IAV, but further work needs to be done to clarify the role of different variants of SAA alone or complexed with HDL.
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Affiliation(s)
- Mitchell R White
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - I-Ni Hsieh
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Xavier De Luna
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Kevan L Hartshorn
- Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
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16
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Hartshorn KL. Innate Immunity and Influenza A Virus Pathogenesis: Lessons for COVID-19. Front Cell Infect Microbiol 2020; 10:563850. [PMID: 33194802 PMCID: PMC7642997 DOI: 10.3389/fcimb.2020.563850] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/11/2020] [Indexed: 12/15/2022] Open
Abstract
There is abundant evidence that the innate immune response to influenza A virus (IAV) is highly complex and plays a key role in protection against IAV induced infection and illness. Unfortunately it also clear that aspects of innate immunity can lead to severe morbidity or mortality from IAV, including inflammatory lung injury, bacterial superinfection, and exacerbation of reactive airways disease. We review broadly the virus and host factors that result in adverse outcomes from IAV and show evidence that inflammatory responses can become damaging even apart from changes in viral replication per se, with special focus on the positive and adverse effects of neutrophils and monocytes. We then evaluate in detail the role of soluble innate inhibitors including surfactant protein D and antimicrobial peptides that have a potential dual capacity for down-regulating viral replication and also inhibiting excessive inflammatory responses and how these innate host factors could possibly be harnessed to treat IAV infection. Where appropriate we draw comparisons and contrasts the SARS-CoV viruses and IAV in an effort to point out where the extensive knowledge existing regarding severe IAV infection could help guide research into severe COVID 19 illness or vice versa.
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Affiliation(s)
- Kevan L Hartshorn
- Section of Hematology Oncology, Boston University School of Medicine, Boston, MA, United States
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17
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Tsutsui S, Matsui S, Nakamura O. Serum amyloid P-component/C-reactive proteins in fugu (Takifugu rubripes) egg with binding ability to disease-causing bacteria by carbohydrate-recognition. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 111:103748. [PMID: 32442442 DOI: 10.1016/j.dci.2020.103748] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/17/2020] [Accepted: 05/17/2020] [Indexed: 06/11/2023]
Abstract
Two galactose-binding proteins were purified from the eggs of Takifugu rubripes by affinity chromatography. These proteins were detected at 26 and 23 kDa under reducing and at 40 and 45 kDa under non-reducing conditions at SDS-PAGE. The peptide sequences from both proteins matched to short-type pentraxin. The 26-kDa lectin was glycosylated, while the other one was not, indicating that these could be glycoforms of pentraxin. Messenger RNA of pentraxin was detected in eggs and embryos at 1-cell stage, was undetectable till blastula, and finally detected again after gastrula, suggesting that the mRNAs in eggs and 1-cell embryos were maternal in origin, and autologous transcription of the gene occurred after blastula. Since they bind to pathogenic bacteria, egg pentraxins may have immunological functions during embryogenesis. This is the first study to show the presence of short-type pentraxin in fish eggs and the diversity of fish egg lectins.
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Affiliation(s)
- Shigeyuki Tsutsui
- School of Marine Biosciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan.
| | - Shintaro Matsui
- School of Marine Biosciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
| | - Osamu Nakamura
- School of Marine Biosciences, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa 252-0373, Japan
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18
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Karhadkar TR, Pilling D, Gomer RH. Serum Amyloid P inhibits single stranded RNA-induced lung inflammation, lung damage, and cytokine storm in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2020. [PMID: 32869032 DOI: 10.1101/2020.08.26.269183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
SARS-CoV-2 is a single stranded RNA (ssRNA) virus and contains GU-rich sequences distributed abundantly in the genome. In COVID-19, the infection and immune hyperactivation causes accumulation of inflammatory immune cells, blood clots, and protein aggregates in lung fluid, increased lung alveolar wall thickness, and upregulation of serum cytokine levels. A serum protein called serum amyloid P (SAP) has a calming effect on the innate immune system and shows efficacy as a therapeutic for fibrosis in animal models and clinical trials. In this report, we show that aspiration of the GU-rich ssRNA oligonucleotide ORN06 into mouse lungs induces all of the above COVID-19-like symptoms. Men tend to have more severe COVID-19 symptoms than women, and in the aspirated ORN06 model, male mice tended to have more severe symptoms than female mice. Intraperitoneal injections of SAP starting from day 1 post ORN06 aspiration attenuated the ORN06-induced increase in the number of inflammatory cells and formation of clot-like aggregates in the mouse lung fluid, reduced ORN06-increased alveolar wall thickness and accumulation of exudates in the alveolar airspace, and attenuated an ORN06-induced upregulation of the inflammatory cytokines IL-1β, IL-6, IL-12p70, IL-23, and IL-27 in serum. Together, these results suggest that aspiration of ORN06 is a simple model for both COVID-19 as well as cytokine storm in general, and that SAP is a potential therapeutic for diseases with COVID-19-like symptoms as well as diseases that generate a cytokine storm.
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19
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George PM, Wells AU, Jenkins RG. Pulmonary fibrosis and COVID-19: the potential role for antifibrotic therapy. THE LANCET. RESPIRATORY MEDICINE 2020; 8:807-815. [PMID: 32422178 PMCID: PMC7228727 DOI: 10.1016/s2213-2600(20)30225-3] [Citation(s) in RCA: 694] [Impact Index Per Article: 173.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 02/08/2023]
Abstract
In December, 2019, reports emerged from Wuhan, China, of a severe acute respiratory disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). By the end of April, 2020, over 3 million people had been confirmed infected, with over 1 million in the USA alone, and over 215 000 deaths. The symptoms associated with COVID-19 are diverse, ranging from mild upper respiratory tract symptoms to severe acute respiratory distress syndrome. The major risk factors for severe COVID-19 are shared with idiopathic pulmonary fibrosis (IPF), namely increasing age, male sex, and comorbidities such as hypertension and diabetes. However, the role of antifibrotic therapy in patients with IPF who contract SARS-CoV-2 infection, and the scientific rationale for their continuation or cessation, is poorly defined. Furthermore, several licensed and potential antifibrotic compounds have been assessed in models of acute lung injury and viral pneumonia. Data from previous coronavirus infections such as severe acute respiratory syndrome and Middle East respiratory syndrome, as well as emerging data from the COVID-19 pandemic, suggest there could be substantial fibrotic consequences following SARS-CoV-2 infection. Antifibrotic therapies that are available or in development could have value in preventing severe COVID-19 in patients with IPF, have the potential to treat severe COVID-19 in patients without IPF, and might have a role in preventing fibrosis after SARS-CoV-2 infection.
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Affiliation(s)
- Peter M George
- Royal Brompton and Harefield NHS Foundation Trust, London, UK,National Heart and Lung Institute, Imperial College London, London, UK
| | - Athol U Wells
- Royal Brompton and Harefield NHS Foundation Trust, London, UK,National Heart and Lung Institute, Imperial College London, London, UK
| | - R Gisli Jenkins
- National Institute for Health Research Biomedical Research Centre, University of Nottingham, Nottingham, UK.
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20
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Bello-Perez M, Pereiro P, Coll J, Novoa B, Perez L, Falco A. Zebrafish C-reactive protein isoforms inhibit SVCV replication by blocking autophagy through interactions with cell membrane cholesterol. Sci Rep 2020; 10:566. [PMID: 31953490 PMCID: PMC6969114 DOI: 10.1038/s41598-020-57501-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 12/31/2019] [Indexed: 02/06/2023] Open
Abstract
In the present work, the mechanisms involved in the recently reported antiviral activity of zebrafish C-reactive protein-like protein (CRP1-7) against the spring viraemia of carp rhabdovirus (SVCV) in fish are explored. The results neither indicate blocking of the attachment or the binding step of the viral replication cycle nor suggest the direct inhibition of G protein fusion activity or the stimulation of the host’s interferon system. However, an antiviral state in the host is induced. Further results showed that the antiviral protection conferred by CRP1-7 was mainly due to the inhibition of autophagic processes. Thus, given the high affinity of CRPs for cholesterol and the recently described influence of the cholesterol balance in lipid rafts on autophagy, both methyl-β-cyclodextrin (a cholesterol-complexing agent) and 25-hydroxycholesterol (a cholesterol molecule with antiviral properties) were used to further describe CRP activity. All the tested compounds exerted antiviral activity by affecting autophagy in a similar manner. Further assays indicate that CRP reduces autophagy activity by initially disturbing the cholesterol ratios in the host cellular membranes, which in turn negatively affects the intracellular regulation of reactive oxygen species (ROS) and increases lysosomal pH as a consequence. Ultimately, here we propose that such pH changes exert an inhibitory direct effect on SVCV replication by disrupting the pH-dependent membrane-fusogenic ability of the viral glycoprotein G, which allows the release of the virus from endosomes into cytoplasm during its entry phase.
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Affiliation(s)
- Melissa Bello-Perez
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Miguel Hernández University (UMH), Elche, 03202, Spain
| | - Patricia Pereiro
- Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Vigo, 36208, Spain
| | - Julio Coll
- Instituto Nacional de Investigaciones y Tecnologías Agrarias y Alimentarias (INIA), Dpto. Biotecnología, Madrid, 28040, Spain
| | - Beatriz Novoa
- Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Vigo, 36208, Spain
| | - Luis Perez
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Miguel Hernández University (UMH), Elche, 03202, Spain.
| | - Alberto Falco
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Miguel Hernández University (UMH), Elche, 03202, Spain.
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21
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Cai SY, Nie L, Chen J. C-reactive protein/serum amyloid P promotes pro-inflammatory function and induces M1-type polarization of monocytes/macrophages in mudskipper, Boleophthalmus pectinirostris. FISH & SHELLFISH IMMUNOLOGY 2019; 94:318-326. [PMID: 31513914 DOI: 10.1016/j.fsi.2019.09.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 08/24/2019] [Accepted: 09/08/2019] [Indexed: 06/10/2023]
Abstract
C-reactive protein (CRP) and serum amyloid P (SAP) play essential roles in the phagocytic cell-mediated innate immune response of mammals. In-depth studies into CRP and SAP have been completed in mammals; however, such studies, particularly those relating to the functions of CRP and SAP, are rare in fish species. In this study, a homolog of CRP/SAP (BpCRP/SAP) was identified in mudskipper (Boleophthalmus pectinirostris), which had the typical characteristics of a fish short pentraxin protein. Phylogenetic tree analysis revealed that BpCRP/SAP was most closely related to mudskipper CRP/SAP-l3. BpCRP/SAP transcripts were detected in all tested tissues, with the highest level observed in the liver; transcripts in the immune tissues and protein expression in the serum were induced in response to Edwardsiella tarda infection. The active recombinant BpCRP/SAP (rBpCRP/SAP) was able to augment the mRNA expression of pro-inflammatory cytokines and attenuate the mRNA expression of anti-inflammatory cytokines in monocytes/macrophages (MO/MΦ). In addition, phagocytosis and bacterial killing of E. tarda by mudskipper MO/MΦ were boosted by rBpCRP/SAP stimulation. rBpCRP/SAP also promoted M1-type MO/MΦ polarization, but inhibited M2-type polarization. In conclusion, the present research describes the pro-inflammatory function of BpCRP/SAP in mudskipper against E. tarda infection.
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Affiliation(s)
- Shi-Yu Cai
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315832, China
| | - Li Nie
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315832, China
| | - Jiong Chen
- State Key Laboratory for Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Meishan Campus, Ningbo University, Ningbo, 315832, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Meishan Campus, Ningbo University, Ningbo, 315832, China.
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22
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Acute phase protein response to viral infection and vaccination. Arch Biochem Biophys 2019; 671:196-202. [PMID: 31323216 PMCID: PMC7094616 DOI: 10.1016/j.abb.2019.07.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/29/2019] [Accepted: 07/15/2019] [Indexed: 02/07/2023]
Abstract
Organisms respond in multiple ways to microbial infections. Pathogen invasion tipically triggers an inflammatory response where acute phase proteins (APP) have a key role. Pentraxins (PTX) are a family of highly conserved APP that play a part in the host defense against infection. The larger proteins of the family are simply named pentraxins, while c-reactive proteins (CRP) and serum amyloid proteins (SAA, SAP) are known as short pentraxins. Although high APP levels have been broadly associated with bacterial infections, there is a growing body of evidence revealing increased PTX, CRP and SAP expression upon viral infection. Furthermore, CRP, PTX and SAP have shown their potential as diagnostic markers and predictors of disease outcome. Likewise, the measurement of APP levels can be valuable to determine the efficacy of antiviral therapies and vaccines. From the practical point of view, the ability of APP to reduce viral infectivity has been observed in several virus-host models. This has prompted investigation efforts to assess the role of acute phase response proteins as immunoregulatory molecules and their potential as therapeutic reagents. This work aims to present an overview of the APP response to viral infections reviewing the current knowledge in the field.
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23
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Wang M, Li Z, Liu H, Wang X, Zhang D. Effect of fetal calf serum on propagation of duck hepatitis A virus genotype 3 in duck embryo fibroblast cells. BMC Vet Res 2019; 15:153. [PMID: 31101110 PMCID: PMC6525396 DOI: 10.1186/s12917-019-1904-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 05/09/2019] [Indexed: 11/26/2022] Open
Abstract
Background Duck viral hepatitis (DVH) is a highly contagious viral disease affecting ducks. It can be caused by five agents, including duck hepatitis A virus genotypes 1 (DHAV-1), 2 (DHAV-2), and 3 (DHAV-3), as well as duck hepatitis virus 2 and duck hepatitis virus 3. Since 2007, DHAV-3 has been known to be the most prevalent in East and South Asia. So far, the information regarding the propagation of DHAV-3 in cultured cells is limited. In this study, we describe the comparative studies on the growth properties of DHAV-3 in primary duck embryo fibroblast (DEF) cells using two different strains: a virulent strain C-GY and an attenuated strain YDF120. The effect of fetal calf serum (FCS) and chick serum (CS) on DHAV-3 replication and the mechanism of the inhibitory effect conferred by FCS were also investigated. Results Following serial passages, both C-GY and YDF120 failed to produce cytopathic effect and plaques. The combined quantitative real-time PCR and indirect immunofluorescence staining methods showed that the two viruses could be propagated productively in DEF cells. Investigation of the viral growth kinetics revealed that the two viruses replicated in DEF cells with similar efficiencies, while the viral load of the virulent C-GY strain peaked more rapidly when compared with the attenuated YDF120 strain. Neutralization assay and time-of-drug-addition study indicated that FCS displayed inhibitory effect on DHAV-3 replication. Analysis on the mechanism of action of FCS against DHAV-3 demonstrated that the inhibitory effect was reflected at three steps of the DHAV-3 life cycle including adsorption, replication, and release. Conclusions Both virulent and attenuated DAHV-3 strains can establish noncytocidal, productive infections in DEF cells. The virulent strain replicates more rapidly than the attenuated strain in early infection period. FCS has an inhibitory effect on DHAV-3 replication, which may be attributed to action of a non-specific inhibitory factor present in FCS directly on the virus. These findings may provide new insights into the development of potential antiviral agents.
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Affiliation(s)
- Minghang Wang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian district, Beijing, 100193, People's Republic of China
| | - Ziheng Li
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian district, Beijing, 100193, People's Republic of China
| | - Huicong Liu
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian district, Beijing, 100193, People's Republic of China
| | - Xiaoyan Wang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian district, Beijing, 100193, People's Republic of China
| | - Dabing Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Haidian district, Beijing, 100193, People's Republic of China.
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24
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Antigenic drift originating from changes to the lateral surface of the neuraminidase head of influenza A virus. Nat Microbiol 2019; 4:1024-1034. [PMID: 30886361 DOI: 10.1038/s41564-019-0401-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 02/01/2019] [Indexed: 12/16/2022]
Abstract
Influenza viruses possess two surface glycoproteins, haemagglutinin and neuraminidase (NA). Although haemagglutinin plays a major role as a protective antigen, immunity to NA also contributes to protection. The NA protein consists of a stalk and a head portion, the latter of which possesses enzymatic NA (or sialidase) activity. Like haemagglutinin, NA is under immune pressure, which leads to amino acid alterations and antigenic drift. Amino acid changes accumulate around the enzymatic active site, which is located at the top of the NA head. However, amino acid alterations also accumulate at the lateral surface of the NA head. The reason for this accumulation remains unknown. Here, we isolated seven anti-NA monoclonal antibodies (mAbs) from individuals infected with A(H1N1)pdm09 virus. We found that amino acid mutations on the lateral surface of the NA head abolished the binding of all of these mAbs. All seven mAbs activated Fcγ receptor (FcγR)-mediated signalling pathways in effector cells and five mAbs possessed NA inhibition activity, but the other two did not; however, all seven protected mice from lethal challenge infection through their NA inhibition activity and/or FcγR-mediated antiviral activity. Serological analysis of individuals infected with A(H1N1)pdm09 virus revealed that some possessed or acquired the anti-NA-lateral-surface antibodies following infection. We also found antigenic drift on the lateral surface of the NA head of isolates from 2009 and 2015. Our results demonstrate that anti-lateral-surface mAbs without NA inhibition activity can provide protection by activating FcγR-mediated antiviral activity and can drive antigenic drift at the lateral surface of the NA head. These findings have implications for NA antigenic characterization in that they demonstrate that traditional NA inhibition assays are inadequate to fully characterize NA antigenicity.
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25
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Mucke HA. Drug Repurposing Patent Applications January–March 2018. Assay Drug Dev Technol 2018; 16:253-259. [DOI: 10.1089/adt.2018.29077.pq1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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26
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Hsieh IN, De Luna X, White MR, Hartshorn KL. The Role and Molecular Mechanism of Action of Surfactant Protein D in Innate Host Defense Against Influenza A Virus. Front Immunol 2018; 9:1368. [PMID: 29951070 PMCID: PMC6008380 DOI: 10.3389/fimmu.2018.01368] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/01/2018] [Indexed: 12/16/2022] Open
Abstract
Influenza A viruses (IAVs) continue to pose major risks of morbidity and mortality during yearly epidemics and periodic pandemics. The genomic instability of IAV allows it to evade adaptive immune responses developed during prior infection. Of particular concern are pandemics which result from wholesale incorporation of viral genome sections from animal sources. These pandemic strains are radically different from circulating human strains and pose great risk for the human population. For these reasons, innate immunity plays a strong role in the initial containment of IAV infection. Soluble inhibitors present in respiratory lining fluids and blood provide a level of early protection against IAV. In general, these inhibitors act by binding to the viral hemagglutinin (HA). Surfactant protein D (SP-D) and mannose-binding lectin (MBL) attach to mannosylated glycans on the HA in a calcium dependent manner. In contrast, surfactant protein A, ficolins, and other inhibitors present sialic acid rich ligands to which the HA can bind. Among these inhibitors, SP-D seems to be the most potent due to its specific mode of binding to viral carbohydrates and its ability to strongly aggregate viral particles. We have studied specific properties of the N-terminal and collagen domain of SP-D that enable formation of highly multimerized molecules and cooperative binding among the multiple trimeric lectin domains in the protein. In addition, we have studied in depth the lectin activity of SP-D through expression of isolated lectin domains and targeted mutations of the SP-D lectin binding site. Through modifying specific residues around the saccharide binding pocket, antiviral activity of isolated lectin domains of SP-D can be markedly increased for seasonal strains of IAV. Wild-type SP-D causes little inhibition of pandemic IAV, but mutated versions of SP-D were able to inhibit pandemic IAV through enhanced binding to the reduced number of mannosylated glycans present on the HA of these strains. Through collaborative studies involving crystallography of isolated lectin domains of SP-D, glycomics analysis of the HA, and molecular modeling, the mechanism of binding of wild type and mutant forms of SP-D have been determined. These studies could guide investigation of the interactions of SP-D with other pathogens.
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Affiliation(s)
- I-Ni Hsieh
- Boston University School of Medicine, Boston, MA, United States
| | - Xavier De Luna
- Boston University School of Medicine, Boston, MA, United States
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27
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Shi YH, Chen K, Ma WJ, Chen J. Ayu C-reactive protein/serum amyloid P agglutinates bacteria and inhibits complement-mediated opsonophagocytosis by monocytes/macrophages. FISH & SHELLFISH IMMUNOLOGY 2018; 76:58-67. [PMID: 29481847 DOI: 10.1016/j.fsi.2018.02.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 02/18/2018] [Accepted: 02/19/2018] [Indexed: 06/08/2023]
Abstract
The short-chain pentraxins (PTXs), including C-reactive protein (CRP) and serum amyloid P (SAP), are soluble pattern recognition molecules (PRMs) that exhibit calcium-dependent binding to bacterial surface molecules. They opsonize pathogens or other particles by phagocytic clearance. However, the detailed functions of short-chain PTXs in teleosts remained unclear. In this study, we identified a short-chain PTX gene from ayu, Plecoglossus altivelis, and tentatively named as PaCRP/SAP. Sequence analysis revealed that PaCRP/SAP has typical characteristics of fish CRP/SAP and is mostly closely related to rainbow smelt (Osmerus mordax) SAP. PaCRP/SAP transcripts were detected in all tested tissues, with the highest level in the liver, and its expression significantly upregulated following Vibrio anguillarum infection. The active recombinant mature PaCRP/SAP (rPaCRP/SAPm) agglutinated Gram-negative bacteria (Escherichia coli, V. anguillarum, Aeromonas hydrophila, and Vibrio parahaemolyticus) and Gram-positive bacteria (Staphylococcus aureus and Listeria monocytogenes) in a calcium-dependent manner in vitro, and it correspondingly bound peptidoglycan and lipopolysaccharide in a dose-dependent manner. The binding of rPaCRP/SAPm to E. coli and S. aureus resulted in a clear inhibition of the deposition of ayu complement 3 (PaC3) on the bacteria. Furthermore, rPaCRP/SAPm decreased phagocytosis of rPaCRP/SAPm-bound E. coli and S. aureus cells by ayu monocytes/macrophages (MO/MΦ) in a complement-dependent way. However, rPaCRP/SAPm alone had no significant influence on phagocytosis. These results provided the first evidence that PaCRP/SAP might function in ayu immune responses via agglutinating bacteria and inhibiting complement-mediated opsonophagocytosis by MO/MΦ.
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Affiliation(s)
- Yu-Hong Shi
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China
| | - Kai Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Wen-Jing Ma
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Jiong Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China.
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28
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Antibodies Directed toward Neuraminidase N1 Control Disease in a Mouse Model of Influenza. J Virol 2018; 92:JVI.01584-17. [PMID: 29167342 DOI: 10.1128/jvi.01584-17] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 11/15/2017] [Indexed: 12/21/2022] Open
Abstract
There is increasing evidence to suggest that antibodies directed toward influenza A virus (IAV) neuraminidase (NA) are an important correlate of protection against influenza in humans. Moreover, the potential of NA-specific antibodies to provide broader protection than conventional hemagglutinin (HA) antibodies has been recognized. Here, we describe the isolation of two monoclonal antibodies, N1-7D3 and N1-C4, directed toward the N1 NA. N1-7D3 binds to a conserved linear epitope in the membrane-distal, carboxy-terminal part of the NA and reacted with the NA of seasonal H1N1 isolates ranging from 1977 to 2007 and the 2009 H1N1pdm virus, as well as A/Vietnam/1194/04 (H5N1). However, N1-7D3 lacked NA inhibition (NI) activity and the ability to protect BALB/c mice against a lethal challenge with a range of H1N1 viruses. Conversely, N1-C4 bound to a conformational epitope that is conserved between two influenza virus subtypes, 2009 H1N1pdm and H5N1 IAV, and displayed potent in vitro antiviral activity mediating both NI and plaque size reduction. Moreover, N1-C4 could provide heterosubtypic protection in BALB/c mice against a lethal challenge with 2009 H1N1pdm or H5N1 virus. Glutamic acid residue 311 in the NA was found to be critical for the NA binding and antiviral activity of monoclonal antibody N1-C4. Our data provide further evidence for cross-protective epitopes within the N1 subtype and highlight the potential of NA as an important target for vaccine and therapeutic approaches.IMPORTANCE Influenza remains a worldwide burden on public health. As such, the development of novel vaccines and therapeutics against influenza virus is crucial. Human challenge studies have recently highlighted the importance of antibodies directed toward the viral neuraminidase (NA) as an important correlate of reduced influenza-associated disease severity. Furthermore, there is evidence that anti-NA antibodies can provide broader protection than antibodies toward the viral hemagglutinin. Here, we describe the isolation and detailed characterization of two N1 NA-specific monoclonal antibodies. One of these monoclonal antibodies broadly binds N1-type NAs, and the second displays NA inhibition and in vitro and in vivo antiviral activity against 2009 H1N1pdm and H5N1 influenza viruses. These two new anti-NA antibodies contribute to our understanding of the antigenic properties and protective potential of the influenza virus NA antigen.
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29
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Suptawiwat O, Ruangrung K, Boonarkart C, Puthavathana P, Maneechotesuwan K, Charngkaew K, Chomanee N, Auewarakul P. Microparticle and anti-influenza activity in human respiratory secretion. PLoS One 2017; 12:e0183717. [PMID: 28832645 PMCID: PMC5568225 DOI: 10.1371/journal.pone.0183717] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 08/09/2017] [Indexed: 12/15/2022] Open
Abstract
Respiratory secretions, such as saliva and bronchoalveolar fluid, contain anti-influenza activity. Multiple soluble factors have been described that exert anti-influenza activity and are believed to be responsible for the anti-influenza activity in respiratory secretions. It was previously shown that a bronchial epithelial cell culture could produce exosome-like particles with anti-influenza activity. Whether such extracellular vesicles in respiratory secretions have anti-influenza activity is unknown. Therefore, we characterized bronchoalveolar lavage fluid and found microparticles, which mostly stained positive for epithelial cell markers and both α2,3- and α2,6-linked sialic acid. Microparticles were purified from bronchoalveolar lavage fluid and shown to exhibit anti-influenza activity by a hemagglutination inhibition (HI) assay and a neutralization (NT) assay. In addition, physical binding between influenza virions and microparticles was demonstrated by electron microscopy. These findings indicate that respiratory microparticles containing viral receptors can exert anti-viral activity by probably trapping viral particles. This innate mechanism may play an important role in the defense against respiratory viruses.
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Affiliation(s)
- Ornpreya Suptawiwat
- Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kanyarat Ruangrung
- Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chompunuch Boonarkart
- Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pilaipan Puthavathana
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Nakhorn Pathom, Thailand
| | | | - Komgrid Charngkaew
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nusara Chomanee
- Department of Pathology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Prasert Auewarakul
- Department of Microbiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
- * E-mail:
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30
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Job ER, Pizzolla A, Nebl T, Short KR, Deng YM, Carolan L, Laurie KL, Brooks AG, Reading PC. Neutralizing inhibitors in the airways of naïve ferrets do not play a major role in modulating the virulence of H3 subtype influenza A viruses. Virology 2016; 494:143-57. [PMID: 27110707 DOI: 10.1016/j.virol.2016.01.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 01/27/2016] [Accepted: 01/29/2016] [Indexed: 12/09/2022]
Abstract
Many insights regarding the pathogenesis of human influenza A virus (IAV) infections have come from studies in mice and ferrets. Surfactant protein (SP)-D is the major neutralizing inhibitor of IAV in mouse airway fluids and SP-D-resistant IAV mutants show enhanced virus replication and virulence in mice. Herein, we demonstrate that sialylated glycoproteins, rather than SP-D, represent the major neutralizing inhibitors against H3 subtype viruses in airway fluids from naïve ferrets. Moreover, while resistance to neutralizing inhibitors is a critical factor in modulating virus replication and disease in the mouse model, it does not appear to be so in the ferret model, as H3 mutants resistant to either SP-D or sialylated glycoproteins in ferret airway fluids did not show enhanced virulence in ferrets. These data have important implications for our understanding of pathogenesis and immunity to human IAV infections in these two widely used animal models of infection.
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Affiliation(s)
- Emma R Job
- Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria 3000, Australia
| | - Angela Pizzolla
- Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria 3000, Australia
| | - Thomas Nebl
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Kirsty R Short
- Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria 3000, Australia
| | - Yi-Mo Deng
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, at The Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria 3000, Australia
| | - Louise Carolan
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, at The Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria 3000, Australia
| | - Karen L Laurie
- WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, at The Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria 3000, Australia
| | - Andrew G Brooks
- Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria 3000, Australia
| | - Patrick C Reading
- Department of Microbiology and Immunology, University of Melbourne, at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria 3000, Australia; WHO Collaborating Centre for Reference and Research on Influenza, Victorian Infectious Diseases Reference Laboratory, at The Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria 3000, Australia.
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Neuraminidase Activity and Resistance of 2009 Pandemic H1N1 Influenza Virus to Antiviral Activity in Bronchoalveolar Fluid. J Virol 2016; 90:4637-4646. [PMID: 26912622 DOI: 10.1128/jvi.00013-16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 02/18/2016] [Indexed: 01/20/2023] Open
Abstract
UNLABELLED Human bronchoalveolar fluid is known to have anti-influenza activity. It is believed to be a frontline innate defense against the virus. Several antiviral factors, including surfactant protein D, are believed to contribute to the activity. The 2009 pandemic H1N1 influenza virus was previously shown to be less sensitive to surfactant protein D. Nevertheless, whether different influenza virus strains have different sensitivities to the overall anti-influenza activity of human bronchoalveolar fluid was not known. We compared the sensitivities of 2009 pandemic H1N1, seasonal H1N1, and seasonal H3N2 influenza virus strains to inhibition by human bronchoalveolar lavage (BAL) fluid. The pandemic and seasonal H1N1 strains showed lower sensitivity to human BAL fluid than the H3N2 strains. The BAL fluid anti-influenza activity could be enhanced by oseltamivir, indicating that the viral neuraminidase (NA) activity could provide resistance to the antiviral defense. In accordance with this finding, the BAL fluid anti-influenza activity was found to be sensitive to sialidase. The oseltamivir resistance mutation H275Y rendered the pandemic H1N1 virus but not the seasonal H1N1 virus more sensitive to BAL fluid. Since only the seasonal H1N1 but not the pandemic H1N1 had compensatory mutations that allowed oseltamivir-resistant strains to maintain NA enzymatic activity and transmission fitness, the resistance to BAL fluid of the drug-resistant seasonal H1N1 virus might play a role in viral fitness. IMPORTANCE Human airway secretion contains anti-influenza activity. Different influenza strains may vary in their susceptibilities to this antiviral activity. Here we show that the 2009 pandemic and seasonal H1N1 influenza viruses were less sensitive to human bronchoalveolar lavage (BAL) fluid than H3N2 seasonal influenza virus. The resistance to the pulmonary innate antiviral activity of the pandemic virus was determined by its neuraminidase (NA) gene, and it was shown that the NA inhibitor resistance mutation H275Y abolished this resistance of the pandemic H1N1 but not the seasonal H1N1 virus, which had compensatory mutations that maintained the fitness of drug-resistant strains. Therefore, the innate respiratory tract defense may be a barrier against NA inhibitor-resistant mutants, and evasion of this defense may play a role in the emergence and spread of drug-resistant strains.
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Wang T, Sun L. CsSAP, a teleost serum amyloid P component, interacts with bacteria, promotes phagocytosis, and enhances host resistance against bacterial and viral infection. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2016; 55:12-20. [PMID: 26454233 DOI: 10.1016/j.dci.2015.10.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2015] [Revised: 10/02/2015] [Accepted: 10/02/2015] [Indexed: 06/05/2023]
Abstract
Serum amyloid P component (SAP) is a member of the pentraxins family that plays important roles in innate immunity in vertebrates. In fish, the biological function of SAP is essentially unknown. In this study, we examined the expression and function of a SAP homologue (CsSAP) from tongue sole Cynoglossus semilaevis. CsSAP shares 46%-58% overall sequence identities with known fish SAP and was upregulated in expression by bacterial and viral infection. Recombinant CsSAP (rCsSAP) exhibited differential binding capacities to a wide range of Gram-positive and Gram-negative bacteria and promoted uptake of the bound bacteria by host phagocytes. When introduced in vivo, rCsSAP enhanced host resistance not only to bacterial infection but also to viral infection. Consistently, antibody blockage of CsSAP significantly weakened the ability of tongue sole to clear invading bacteria. These results provide the first evidence that fish SAP contributes significantly to both antibacterial and antiviral immunities.
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Affiliation(s)
- Ting Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
| | - Li Sun
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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Shen Z, Lou K, Wang W. New small-molecule drug design strategies for fighting resistant influenza A. Acta Pharm Sin B 2015; 5:419-30. [PMID: 26579472 PMCID: PMC4629447 DOI: 10.1016/j.apsb.2015.07.006] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 07/05/2015] [Indexed: 11/24/2022] Open
Abstract
Influenza A virus is the major cause of seasonal or pandemic flu worldwide. Two main treatment strategies-vaccination and small molecule anti-influenza drugs are currently available. As an effective vaccine usually takes at least 6 months to develop, anti-influenza small molecule drugs are more effective for the first line of protection against the virus during an epidemic outbreak, especially in the early stage. Two major classes of anti-influenza drugs currently available are admantane-based M2 protein blockers (amantadine and rimantadine) and neuraminidase (NA) inhibitors (oseltamivir, zanamivir, and peramivir). However, the continuous evolvement of influenza A virus and the rapid emergence of resistance to current drugs, particularly to amantadine, rimantadine, and oseltamivir, have raised an urgent need for developing new anti-influenza drugs against resistant forms of influenza A virus. In this review, we first give a brief introduction of the molecular mechanisms behind resistance, and then discuss new strategies in small-molecule drug development to overcome influenza A virus resistance targeting mutant M2 proteins and neuraminidases, and other viral proteins not associated with current drugs.
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Affiliation(s)
- Zuyuan Shen
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, and State Key Laboratory of Bioengineering Reactor, East China University of Science and Technology, Shanghai 200237, China
| | - Kaiyan Lou
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, and State Key Laboratory of Bioengineering Reactor, East China University of Science and Technology, Shanghai 200237, China
| | - Wei Wang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, and State Key Laboratory of Bioengineering Reactor, East China University of Science and Technology, Shanghai 200237, China
- Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM 87131-0001, USA
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Pilling D, Cox N, Vakil V, Verbeek JS, Gomer RH. The long pentraxin PTX3 promotes fibrocyte differentiation. PLoS One 2015; 10:e0119709. [PMID: 25774777 PMCID: PMC4361553 DOI: 10.1371/journal.pone.0119709] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 01/16/2015] [Indexed: 12/31/2022] Open
Abstract
Monocyte-derived, fibroblast-like cells called fibrocytes are associated with fibrotic lesions. The plasma protein serum amyloid P component (SAP; also known as pentraxin-2, PTX2) inhibits fibrocyte differentiation in vitro, and injections of SAP inhibit fibrosis in vivo. SAP is a member of the pentraxin family of proteins that includes C-reactive protein (CRP; PTX1) and pentraxin-3 (PTX3). All three pentraxins are associated with fibrosis, but only SAP and CRP have been studied for their effects on fibrocyte differentiation. We find that compared to SAP and CRP, PTX3 promotes human and murine fibrocyte differentiation. The effect of PTX3 is dependent on FcγRI. In competition studies, the fibrocyte-inhibitory activity of SAP is dominant over PTX3. Binding competition studies indicate that SAP and PTX3 bind human FcγRI at different sites. In murine models of lung fibrosis, PTX3 is present in fibrotic areas, and the PTX3 distribution is associated with collagen deposition. In lung tissue from pulmonary fibrosis patients, PTX3 has a widespread distribution, both in unaffected tissue and in fibrotic lesions, whereas SAP is restricted to areas adjacent to vessels, and absent from fibrotic areas. These data suggest that the relative levels of SAP and PTX3 present at sites of fibrosis may have a significant effect on the ability of monocytes to differentiate into fibrocytes.
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Affiliation(s)
- Darrell Pilling
- Department of Biology, Texas A&M University, College Station, Texas, United States of America
- * E-mail: (DP); (RHG)
| | - Nehemiah Cox
- Department of Biology, Texas A&M University, College Station, Texas, United States of America
| | - Varsha Vakil
- Department of Biochemistry and Cell Biology, Rice University, Houston, Texas, United States of America
| | - J. Sjef Verbeek
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Richard H. Gomer
- Department of Biology, Texas A&M University, College Station, Texas, United States of America
- Department of Biochemistry and Cell Biology, Rice University, Houston, Texas, United States of America
- * E-mail: (DP); (RHG)
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Loregian A, Mercorelli B, Nannetti G, Compagnin C, Palù G. Antiviral strategies against influenza virus: towards new therapeutic approaches. Cell Mol Life Sci 2014; 71:3659-83. [PMID: 24699705 PMCID: PMC11114059 DOI: 10.1007/s00018-014-1615-2] [Citation(s) in RCA: 132] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 03/04/2014] [Accepted: 03/18/2014] [Indexed: 01/02/2023]
Abstract
Influenza viruses are major human pathogens responsible for respiratory diseases affecting millions of people worldwide and characterized by high morbidity and significant mortality. Influenza infections can be controlled by vaccination and antiviral drugs. However, vaccines need annual updating and give limited protection. Only two classes of drugs are currently approved for the treatment of influenza: M2 ion channel blockers and neuraminidase inhibitors. However, they are often associated with limited efficacy and adverse side effects. In addition, the currently available drugs suffer from rapid and extensive emergence of drug resistance. All this highlights the urgent need for developing new antiviral strategies with novel mechanisms of action and with reduced drug resistance potential. Several new classes of antiviral agents targeting viral replication mechanisms or cellular proteins/processes are under development. This review gives an overview of novel strategies targeting the virus and/or the host cell for counteracting influenza virus infection.
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Affiliation(s)
- Arianna Loregian
- Department of Molecular Medicine, University of Padua, via Gabelli 63, 35121, Padua, Italy,
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Couzens L, Gao J, Westgeest K, Sandbulte M, Lugovtsev V, Fouchier R, Eichelberger M. An optimized enzyme-linked lectin assay to measure influenza A virus neuraminidase inhibition antibody titers in human sera. J Virol Methods 2014; 210:7-14. [PMID: 25233882 DOI: 10.1016/j.jviromet.2014.09.003] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2014] [Revised: 08/24/2014] [Accepted: 09/07/2014] [Indexed: 10/24/2022]
Abstract
Antibodies to neuraminidase (NA), the second most abundant surface protein on influenza virus, contribute toward protection against influenza. The traditional thiobarbituric acid (TBA) method to quantify NA inhibiting antibodies is cumbersome and not suitable for routine serology. An enzyme-linked lectin assay (ELLA) described by Lambre et al. (1990) is a practical alternative method for measuring NA inhibition (NI) titers. This report describes optimization of the ELLA for measuring NI titers in human sera against influenza A viruses, using H6N1 and H6N2 viruses as antigens. The optimized ELLA is subtype-specific and reproducible. While the titers measured by ELLA are somewhat greater than those measured by a miniaturized TBA method, seroconversion rates are the same, suggesting similarity in assay sensitivity under these optimized conditions. The ELLA described in this report provides a practical format for routine evaluation of human antibody responses to NA.
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Affiliation(s)
- Laura Couzens
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Building 72, HFM445, Silver Spring, MD 20993, USA.
| | - Jin Gao
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Building 72, HFM445, Silver Spring, MD 20993, USA.
| | - Kim Westgeest
- Department of Viroscience, Erasmus Medical Center, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Matthew Sandbulte
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Building 72, HFM445, Silver Spring, MD 20993, USA.
| | - Vladimir Lugovtsev
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Building 72, HFM445, Silver Spring, MD 20993, USA.
| | - Ron Fouchier
- Department of Viroscience, Erasmus Medical Center, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands.
| | - Maryna Eichelberger
- Division of Viral Products, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Building 72, HFM445, Silver Spring, MD 20993, USA.
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Zhang SJ, Chen Z, Li GW, Wang BL. Effect of the Haoqinqingdan decoction on damp-heat syndrome in rats with influenza viral pneumonia. ASIAN PAC J TROP MED 2014; 6:653-7. [PMID: 23790339 PMCID: PMC7128502 DOI: 10.1016/s1995-7645(13)60113-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 06/15/2013] [Accepted: 07/15/2013] [Indexed: 01/20/2023] Open
Abstract
Objective To investigate the effect of Chinese medicine prescription-Haoqinqingdan decoction on damp-heat syndrome in rats with influenza viral pneumonia and its influence on the immune function. Methods A total of 48 Wistar rats were randomly divided into the normal control group, the damp-heat syndrome model group, the Haoqinqingdan decoction group (high, medium and low dose group) and the ribavirin group. The body temperature and weight of rats in each group were recorded after modeling. After treatment for 6 d, the concentration of T lymphocyte subgroup (CD3+CD4+, CD3+CD8+) was determined by flow cytometry. The OD value of IFN-γ/IL-4 was detected by double-antibody sandwich ELISA method, and its concentration was acquired through conversion. Results After modeling, the temperature and weight of rats in each modeling group showed the increasing trend (P<0.01). From the second day of treatment, there was significant difference in the body mass between groups, and the rat weight of the control group was higher than in the modeling group (P<0.05 or 0.01). With the advances of treatment, only the temperature in the medium and high dose Haoqinqingdan decoction groups declined significantly (P<0.05). After treatment, the CD4+/CD8+ ratio of the damp-heat syndrome model group decreased more significantly compared with the control group. Elevated CD3+ CD8+ percentages and declined CD4+/CD8+ ratios can be observed in the low dose group and ribavirin group (P<0.05). Moreover, the CD3+ CD4+ percentage of ribavirin group was lower than in the control group (P<0.05). After treatment, the IFN-γ and IFN-γ/ IL-4 levels in the peripheral blood of rats in the damp-heat syndrome group were obviously higher than in the control group (P<0.05). Conclusions Compared with ribavirin, the high dose Haoqinqingdan decoction can improve the ratio of T lymphocyte subgroup and Th1/Th2 cell balance more effectively.
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Affiliation(s)
- Shi-Jin Zhang
- Department of Traditional Chinese Medicine, People's Hospital of Zhengzhou, Zhengzhou 450012, China
| | - Zhuo Chen
- Pharmacy Department, Cancer Hospital Affiliated to Zhengzhou University, Zhengzhou 450008, China
| | - Guo-Wen Li
- Department of Radiotherapy, Tangdu Hospital, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Bo-Liang Wang
- Out-patient Department, Tangdu Hospital, The Second Affiliated Hospital of the Fourth Military Medical University, Xi'an 7l0038, China
- Corresponding authors: Bo-Liang Wang, Out-patient Department, Tangdu Hospital, The Second Affiliated Hospital of the Fourth Military Medical University, Xi'an 7l0038, China
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Kapoor S, Dhama K. Prevention and Control of Influenza Viruses. INSIGHT INTO INFLUENZA VIRUSES OF ANIMALS AND HUMANS 2014. [PMCID: PMC7121144 DOI: 10.1007/978-3-319-05512-1_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The 2003–2004 outbreaks of highly pathogenic avian influenza (HPAI) have proven to be disastrous to the regional poultry industry in Asia, and have raised serious worldwide public health apprehension regarding the steps that should be taken to urgently control HPAI. Control measures must be taken based on the principles of biosecurity and disease management and at the same time making public aware of the precautionary measures at the verge of outbreak. Creation of protection and surveillance zones, various vaccination strategies viz. routine, preventive, emergency, mass and targeted vaccination programmes using live, inactivated and recombinant vaccines are the common strategies adopted in different parts of the globe. The new generation vaccines include recombinant vaccines and recombinant fusion vaccine. The pro-poor disease control programmes, giving compensation and subsidies to the farmers along with effective and efficient Veterinary Services forms integral part of control of HPAI. Following biosecurity principles and vaccination forms integral part of control programme against swine and equine influenza as well. Use of neuraminidase (NA) inhibitors (Zanamivir and Oseltamivir) for the treatment of human influenza has been widely accepted worldwide. The threat of increasing resistance of the flu viruses to these antivirals has evoked interest in the development of novel antiviral drugs for influenza virus such as inhibitors of cellular factors and host signalling cascades, cellular miRNAs, siRNA and innate immune peptides (defensins and cathelicidins). Commercial licensed inactivated vaccines for humans against influenza A and B viruses are available consisting of three influenza viruses: influenza type A subtype H3N2, influenza type A subtype H1N1 (seasonal) virus strain and influenza type B virus strain. As per WHO, use of tetravaccine consisting of antigens of influenza virus serotypes H3N2, H1N1, B and H5 is the most promising method to control influenza pandemic. All healthy children in many countries are required to be vaccinated between 6 and 59 months of age. The seasonal vaccines currently used in humans induce strain-specific humoral immunity as the antibodies. Universal influenza virus vaccines containing the relatively conserved ectodomain of M2 (M2e), M1, HA fusion peptide and stalk domains, NA, NP alone or in combination have been developed which have been shown to induce cross-protection. The T cell-based vaccines are another recent experimental approach that has been shown to elicit broad-spectrum heterosubtypic immunity in the host. As far as HPAI is concerned, various pandemic preparedness strategies have been documented.
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Affiliation(s)
- Sanjay Kapoor
- Department of Veterinary Microbiology, LLR University of Veterinary and Animal Sciences, Hisar, 125004 Haryana India
| | - Kuldeep Dhama
- Division of Pathology, Indian Veterinary Research Institute (IVRI), Izatnagar, Bareilly, 243122 Uttar Pradesh India
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Job ER, Bottazzi B, Short KR, Deng YM, Mantovani A, Brooks AG, Reading PC. A single amino acid substitution in the hemagglutinin of H3N2 subtype influenza A viruses is associated with resistance to the long pentraxin PTX3 and enhanced virulence in mice. THE JOURNAL OF IMMUNOLOGY 2013; 192:271-81. [PMID: 24307735 DOI: 10.4049/jimmunol.1301814] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The long pentraxin, pentraxin 3 (PTX3), can play beneficial or detrimental roles during infection and disease by modulating various aspects of the immune system. There is growing evidence to suggest that PTX3 can mediate antiviral activity in vitro and in vivo. Previous studies demonstrated that PTX3 and the short pentraxin serum amyloid P express sialic acids that are recognized by the hemagglutinin (HA) glycoprotein of certain influenza A viruses (IAV), resulting in virus neutralization and anti-IAV activity. In this study, we demonstrate that specificity of both HA and the viral neuraminidase for particular sialic acid linkages determines the susceptibility of H1N1, H3N2, and H7N9 strains to the antiviral activities of PTX3 and serum amyloid P. Selection of H3N2 virus mutants resistant to PTX3 allowed for identification of amino acid residues in the vicinity of the receptor-binding pocket of HA that are critical determinants of sensitivity to PTX3; this was supported by sequence analysis of a range of H3N2 strains that were sensitive or resistant to PTX3. In a mouse model of infection, the enhanced virulence of PTX3-resistant mutants was associated with increased virus replication and elevated levels of proinflammatory cytokines in the airways, leading to pulmonary inflammation and lung injury. Together, these studies identify determinants in the viral HA that can be associated with sensitivity to the antiviral activities of PTX3 and highlight its importance in the control of IAV infection.
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Affiliation(s)
- Emma R Job
- Department of Microbiology and Immunology, University of Melbourne, Melbourne 3010, Victoria, Australia
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Veszelka S, Laszy J, Pázmány T, Németh L, Obál I, Fábián L, Szabó G, Abrahám CS, Deli MA, Urbányi Z. Efflux transport of serum amyloid P component at the blood-brain barrier. Eur J Microbiol Immunol (Bp) 2013; 3:281-9. [PMID: 24294499 DOI: 10.1556/eujmi.3.2013.4.8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 10/18/2013] [Indexed: 01/09/2023] Open
Abstract
Serum amyloid P component (SAP), a member of the innate immune system, does not penetrate the brain in physiological conditions; however, SAP is a stabilizing component of the amyloid plaques in neurodegenerative diseases. We investigated the cerebrovascular transport of human SAP in animal experiments and in culture blood-brain barrier (BBB) models. After intravenous injection, no SAP could be detected by immunohistochemistry or ELISA in healthy rat brains. Salmonella typhimurium lipopolysaccharide injection increased BBB permeability for SAP and the number of cerebral vessels labeled with fluorescein isothiocyanate (FITC)-SAP in mice. Furthermore, when SAP was injected to the rat hippocampus, a time-dependent decrease in brain concentration was seen demonstrating a rapid SAP efflux transport in vivo. A temperature-dependent bidirectional transport of FITC-SAP was observed in rat brain endothelial monolayers. The permeability coefficient for FITC-SAP was significantly higher in abluminal to luminal (brain to blood) than in the opposite direction. The luminal release of FITC-SAP from loaded endothelial cells was also significantly higher than the abluminal one. Our data indicate the presence of BBB efflux transport mechanisms protecting the brain from SAP penetration. Damaged BBB integrity due to pathological insults may increase brain SAP concentration contributing to development of neurodegenerative diseases.
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Du Clos TW. Pentraxins: structure, function, and role in inflammation. ISRN INFLAMMATION 2013; 2013:379040. [PMID: 24167754 PMCID: PMC3791837 DOI: 10.1155/2013/379040] [Citation(s) in RCA: 152] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 08/19/2013] [Indexed: 12/03/2022]
Abstract
The pentraxins are an ancient family of proteins with a unique architecture found as far back in evolution as the Horseshoe crab. In humans the two members of this family are C-reactive protein and serum amyloid P. Pentraxins are defined by their sequence homology, their pentameric structure and their calcium-dependent binding to their ligands. Pentraxins function as soluble pattern recognition molecules and one of the earliest and most important roles for these proteins is host defense primarily against pathogenic bacteria. They function as opsonins for pathogens through activation of the complement pathway and through binding to Fc gamma receptors. Pentraxins also recognize membrane phospholipids and nuclear components exposed on or released by damaged cells. CRP has a specific interaction with small nuclear ribonucleoproteins whereas SAP is a major recognition molecule for DNA, two nuclear autoantigens. Studies in autoimmune and inflammatory disease models suggest that pentraxins interact with macrophage Fc receptors to regulate the inflammatory response. Because CRP is a strong acute phase reactant it is widely used as a marker of inflammation and infection.
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Affiliation(s)
- Terry W. Du Clos
- The Department of Veterans Affairs Medical Center, Research Service 151, 1501 San Pedro SE, Albuquerque, NM 87108, USA
- Department of Internal Medicine, The University of New Mexico School of Medicine, Albuquerque, NM 87108, USA
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