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Hu W, Meng L, Wang C, Lu W, Tong X, Lin R, Xu T, Chen L, Cui A, Xu X, Li A, Tang J, Gao H, Pei Z, Zhang R, Wang Y, Wang Y, Han W, Jiang N, Xiong C, Feng Y, Lee K, Chen M. Spatiotemporal observations of host-pathogen interactions in mucosa during SARS-CoV-2 infection indicate a protective role of ILC2s. Microbiol Spectr 2023; 11:e0087823. [PMID: 37937994 PMCID: PMC10714800 DOI: 10.1128/spectrum.00878-23] [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] [Received: 05/15/2023] [Accepted: 09/30/2023] [Indexed: 11/09/2023] Open
Abstract
IMPORTANCE Our study revealed the spatial interaction between humanized ACE2 and pseudovirus expressing Spike, emphasizing the role of type 2 innate lymphoid cells during the initial phase of viral infection. These findings provide a foundation for the development of mucosal vaccines and other treatment approaches for both pre- and post-infection management of coronavirus disease 2019.
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Affiliation(s)
- Wei Hu
- Department of Emergency Medicine, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Lu Meng
- The Center for Microbes, Development and Health, Key Laboratory of Molecular Virology and Immunology, Institute Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Chao Wang
- Department of Emergency Medicine, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Wenhan Lu
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Xiaoyu Tong
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Rui Lin
- State Key Laboratory of Genetic Engineering, School of Life Science, Fudan University, Shanghai, China
| | - Tao Xu
- Department of Infectious Diseases, National Medical Center for Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Liang Chen
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - An Cui
- Department of Emergency Medicine, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaoqing Xu
- Department of Emergency Medicine, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Anni Li
- Department of Emergency Medicine, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Jia Tang
- Department of Emergency Medicine, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Hongru Gao
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Zhenle Pei
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Ruonan Zhang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Yicong Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Yu Wang
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Wendong Han
- Biosafety Level 3 Laboratory, Shanghai Medical College Fudan University, Shanghai, China
| | - Ning Jiang
- State Key Laboratory of Genetic Engineering, School of Life Science, Fudan University, Shanghai, China
| | - Chenglong Xiong
- Department of Epidemiology, School of Public Health, and Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai, China
| | - Yi Feng
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Kuinyu Lee
- Department of Integrative Medicine and Neurobiology, School of Basic Medical Sciences, Institutes of Brain Science, Brain Science Collaborative Innovation Center, State Key Laboratory of Medical Neurobiology, Institute of Acupuncture and Moxibustion, Fudan Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Mingquan Chen
- Department of Emergency Medicine, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Fudan University, Shanghai, China
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2
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Kwak MS, Choi S, Kim J, Lee H, Park IH, Oh J, Mai DN, Cho NH, Nam KT, Shin JS. SARS-CoV-2 Infection Induces HMGB1 Secretion Through Post-Translational Modification and PANoptosis. Immune Netw 2023; 23:e26. [PMID: 37416931 PMCID: PMC10320423 DOI: 10.4110/in.2023.23.e26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 03/30/2023] [Accepted: 04/09/2023] [Indexed: 07/08/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection induces excessive pro-inflammatory cytokine release and cell death, leading to organ damage and mortality. High-mobility group box 1 (HMGB1) is one of the damage-associated molecular patterns that can be secreted by pro-inflammatory stimuli, including viral infections, and its excessive secretion levels are related to a variety of inflammatory diseases. Here, the aim of the study was to show that SARS-CoV-2 infection induced HMGB1 secretion via active and passive release. Active HMGB1 secretion was mediated by post-translational modifications, such as acetylation, phosphorylation, and oxidation in HEK293E/ACE2-C-GFP and Calu-3 cells during SARS-CoV-2 infection. Passive release of HMGB1 has been linked to various types of cell death; however, we demonstrated for the first time that PANoptosis, which integrates other cell death pathways, including pyroptosis, apoptosis, and necroptosis, is related to passive HMGB1 release during SARS-CoV-2 infection. In addition, cytoplasmic translocation and extracellular secretion or release of HMGB1 were confirmed via immunohistochemistry and immunofluorescence in the lung tissues of humans and angiotensin-converting enzyme 2-overexpressing mice infected with SARS-CoV-2.
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Affiliation(s)
- Man Sup Kwak
- Department of Microbiology, Yonsei University College of Medicine, Seoul 03722, Korea
- Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Seoyeon Choi
- Department of Microbiology, Yonsei University College of Medicine, Seoul 03722, Korea
- Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Jiseon Kim
- Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Korea
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Hoojung Lee
- Department of Microbiology, Yonsei University College of Medicine, Seoul 03722, Korea
- Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Korea
| | - In Ho Park
- Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul 03722, Korea
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Jooyeon Oh
- Department of Microbiology, Yonsei University College of Medicine, Seoul 03722, Korea
- Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Duong Ngoc Mai
- Department of Microbiology, Yonsei University College of Medicine, Seoul 03722, Korea
- Department of Pediatrics, University of Medicine and Pharmacy, Ho Chi Minh 700000, Vietnam
| | - Nam-Hyuk Cho
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Ki Taek Nam
- Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Korea
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Jeon-Soo Shin
- Department of Microbiology, Yonsei University College of Medicine, Seoul 03722, Korea
- Institute for Immunology and Immunological Diseases, Yonsei University College of Medicine, Seoul 03722, Korea
- Brain Korea 21 FOUR Project for Medical Science, Yonsei University College of Medicine, Seoul 03722, Korea
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3
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Padasas BT, Españo E, Kim SH, Song Y, Lee CK, Kim JK. COVID-19 Therapeutics: An Update on Effective Treatments Against Infection With SARS-CoV-2 Variants. Immune Netw 2023; 23:e13. [PMID: 37179752 PMCID: PMC10166656 DOI: 10.4110/in.2023.23.e13] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 05/15/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic is one of the most consequential global health crises in over a century. Since its discovery in 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to mutate into different variants and sublineages, rendering previously potent treatments and vaccines ineffective. With significant strides in clinical and pharmaceutical research, different therapeutic strategies continue to be developed. The currently available treatments can be broadly classified based on their potential targets and molecular mechanisms. Antiviral agents function by disrupting different stages of SARS-CoV-2 infection, while immune-based treatments mainly act on the human inflammatory response responsible for disease severity. In this review, we discuss some of the current treatments for COVID-19, their mode of actions, and their efficacy against variants of concern. This review highlights the need to constantly evaluate COVID-19 treatment strategies to protect high risk populations and fill in the gaps left by vaccination.
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Affiliation(s)
| | - Erica Españo
- Department of Pharmacy, Korea University College of Pharmacy, Sejong 30019, Korea
| | - Sang-Hyun Kim
- Department of Pharmacy, Korea University College of Pharmacy, Sejong 30019, Korea
| | - Youngcheon Song
- Department of Pharmacy, Sahmyook University, Seoul 01795, Korea
| | - Chong-Kil Lee
- Department of Pharmaceutics, College of Pharmacy, Chungbuk National University, Cheongju 28644, Korea
| | - Jeong-Ki Kim
- Department of Pharmacy, Korea University College of Pharmacy, Sejong 30019, Korea
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4
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Jiang L, Guo P, Ju J, Zhu X, Wu S, Dai J. Inhalation of L-arginine-modified liposomes targeting M1 macrophages to enhance curcumin therapeutic efficacy in ALI. Eur J Pharm Biopharm 2023; 182:21-31. [PMID: 36442537 DOI: 10.1016/j.ejpb.2022.11.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/30/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022]
Abstract
Acute lung injury/acute respiratory distress syndrome (ALI/ARDS), characterized by uncontrolled lung inflammation, is one of the most devastating diseases with high morbidity and mortality. As the first line of defense system, macrophages play a crucial role in the pathogenesis of ALI/ARDS. Therefore, it has great potential to selectively target M1 macrophages to improve the therapeutic effect of anti-inflammatory drugs. l-arginine plays a key role in regulating the immune function of macrophages. The receptors mediating l-arginine uptake are highly expressed on the surface of M1-type macrophages. In this study, we designed an l-arginine-modified liposome for aerosol inhalation to target M1 macrophages in the lung, and the anti-inflammatory drug curcumin was encapsulated in liposomes as model drug. Compared with unmodified curcumin liposome (Cur-Lip), l-arginine functionalized Cur-Lip (Arg-Cur-Lip) exhibited higher uptake by M1 macrophages in vitro and higher accumulation in inflamed lungs in vivo. Furthermore, Arg-Cur-Lip showed more potent therapeutic effects in LPS-induced RAW 264.7 cells and the rat model of ALI. Overall, these findings indicate that l-arginine-modified liposomes have great potential to enhance curcumin treatment of ALI/ARDS by targeting M1 macrophages, which may provide an option for the treatment of acute lung inflammatory diseases such as coronavirus disease 2019 (COVID-19), severe acute respiratory syndrome and middle east respiratory syndrome.
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Affiliation(s)
- Linxia Jiang
- Department of Chinese Medicinal Pharmaceutics, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Yang Guang South Street, Fangshan District, Beijing 102488, China
| | - Pengchuan Guo
- Department of Chinese Medicinal Pharmaceutics, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Yang Guang South Street, Fangshan District, Beijing 102488, China
| | - Jiarui Ju
- Department of Chinese Medicinal Pharmaceutics, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Yang Guang South Street, Fangshan District, Beijing 102488, China
| | - Xiaoyan Zhu
- Department of Chinese Medicinal Pharmaceutics, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Yang Guang South Street, Fangshan District, Beijing 102488, China
| | - Shiyue Wu
- Department of Chinese Medicinal Pharmaceutics, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Yang Guang South Street, Fangshan District, Beijing 102488, China
| | - Jundong Dai
- Department of Chinese Medicinal Pharmaceutics, School of Chinese Materia Medica, Beijing University of Chinese Medicine, Yang Guang South Street, Fangshan District, Beijing 102488, China.
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5
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Jasim SA, Mahdi RS, Bokov DO, Najm MAA, Sobirova GN, Bafoyeva ZO, Taifi A, Alkadir OKA, Mustafa YF, Mirzaei R, Karampoor S. The deciphering of the immune cells and marker signature in COVID-19 pathogenesis: An update. J Med Virol 2022; 94:5128-5148. [PMID: 35835586 PMCID: PMC9350195 DOI: 10.1002/jmv.28000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 06/28/2022] [Accepted: 07/13/2022] [Indexed: 12/15/2022]
Abstract
The precise interaction between the immune system and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is critical in deciphering the pathogenesis of coronavirus disease 2019 (COVID-19) and is also vital for developing novel therapeutic tools, including monoclonal antibodies, antivirals drugs, and vaccines. Viral infections need innate and adaptive immune reactions since the various immune components, such as neutrophils, macrophages, CD4+ T, CD8+ T, and B lymphocytes, play different roles in various infections. Consequently, the characterization of innate and adaptive immune reactions toward SARS-CoV-2 is crucial for defining the pathogenicity of COVID-19. In this study, we explain what is currently understood concerning the conventional immune reactions to SARS-CoV-2 infection to shed light on the protective and pathogenic role of immune response in this case. Also, in particular, we investigate the in-depth roles of other immune mediators, including neutrophil elastase, serum amyloid A, and syndecan, in the immunopathogenesis of COVID-19.
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Affiliation(s)
| | - Roaa Salih Mahdi
- Department of Pathology, College of MedicineUniversity of BabylonHillaIraq
| | - Dmitry Olegovich Bokov
- Institute of PharmacySechenov First Moscow State Medical UniversityMoscowRussian Federation,Laboratory of Food ChemistryFederal Research Center of Nutrition, Biotechnology and Food SafetyMoscowRussian Federation
| | - Mazin A. A. Najm
- Pharmaceutical Chemistry Department, College of PharmacyAl‐Ayen UniversityThi‐QarIraq
| | - Guzal N. Sobirova
- Department of Rehabilitation, Folk Medicine and Physical EducationTashkent Medical AcademyTashkentUzbekistan
| | - Zarnigor O. Bafoyeva
- Department of Rehabilitation, Folk Medicine and Physical EducationTashkent Medical AcademyTashkentUzbekistan
| | | | | | - Yasser Fakri Mustafa
- Department of Pharmaceutical Chemistry, College of PharmacyUniversity of MosulMosulIraq
| | - Rasoul Mirzaei
- Venom and Biotherapeutics Molecules Lab, Medical Biotechnology Department, Biotechnology Research CenterPasteur Institute of IranTehranIran
| | - Sajad Karampoor
- Gastrointestinal and Liver Diseases Research CenterIran University of Medical SciencesTehranIran
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Dhaliwal M, Tyagi R, Malhotra P, Barman P, Loganathan SK, Sharma J, Sharma K, Mondal S, Rawat A, Singh S. Mechanisms of Immune Dysregulation in COVID-19 Are Different From SARS and MERS: A Perspective in Context of Kawasaki Disease and MIS-C. Front Pediatr 2022; 10:790273. [PMID: 35601440 PMCID: PMC9119432 DOI: 10.3389/fped.2022.790273] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 04/04/2022] [Indexed: 12/15/2022] Open
Abstract
Coronaviruses have led to three major outbreaks to date-Severe Acute Respiratory Syndrome (SARS; 2002), Middle East Respiratory Syndrome (MERS; 2012) and the ongoing pandemic, Coronavirus Disease (COVID-19; 2019). Coronavirus infections are usually mild in children. However, a few children with MERS had presented with a severe phenotype in the acute phase resulting in progressive pneumonic changes with increasing oxygen dependency and acute respiratory distress requiring ventilatory support. A subset of children with a history of SARS-CoV-2 infection develops a multisystem hyper-inflammatory phenotype known as Multisystem Inflammatory Syndrome in Children (MIS-C). This syndrome occurs 4-6 weeks after infection with SARS-CoV-2 and has been reported more often from areas with high community transmission. Children with MIS-C present with high fever and often have involvement of cardiovascular, gastrointestinal and hematologic systems leading to multiorgan failure. This is accompanied by elevation of pro-inflammatory cytokines such as IL-6 and IL-10. MIS-C has several similarities with Kawasaki disease (KD) considering children with both conditions present with fever, rash, conjunctival injection, mucosal symptoms and swelling of hands and feet. For reasons that are still not clear, both KD and MIS-C were not reported during the SARS-CoV and MERS-CoV outbreaks. As SARS-CoV-2 differs from SARS-CoV by 19.5% and MERS by 50% in terms of sequence identity, differences in genomic and proteomic profiles may explain the varied disease immunopathology and host responses. Left untreated, MIS-C may lead to severe abdominal pain, ventricular dysfunction and shock. Immunological investigations reveal reduced numbers of follicular B cells, increased numbers of terminally differentiated CD4+T lymphocytes, and decreased IL-17A. There is still ambiguity about the clinical and immunologic risk factors that predispose some children to development of MIS-C while sparing others. Host-pathogen interactions in SARS, MERS and COVID-19 are likely to play a crucial role in the clinical phenotypes that manifest. This narrative review focuses on the immunological basis for development of MIS-C syndrome in the ongoing SARS-CoV-2 pandemic. To the best of our knowledge, these aspects have not been reviewed before.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Surjit Singh
- Allergy and Immunology Unit, Department of Pediatrics, Advanced Pediatrics Center, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Insights into the structure and dynamics of SARS-CoV-2 spike glycoprotein double mutant L452R-E484Q. 3 Biotech 2022; 12:87. [PMID: 35265451 PMCID: PMC8893057 DOI: 10.1007/s13205-022-03151-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 02/13/2022] [Indexed: 12/26/2022] Open
Abstract
The Receptor Binding Domain (RBD) of SARS-CoV-2, located on the S1 subunit, plays a vital role in the virus binding and its entry into the host cell through angiotensin-converting enzyme 2 (ACE2) receptor. Therefore, understanding the dynamic effects of mutants on the SARS-CoV-2 RBD is essential for discovering drugs to inhibit the virus binding and disrupt its entry into the host cells. A recent study reported a double mutant of SARS-CoV-2, L452R-E484Q, located in the RBD region. Thus, this study employed various computational algorithms and methods to understand the structural impact of both individual variants L452R, E484Q, and the double mutant L452R-E484Q on the native RBD of spike glycoprotein. The effects of the mutations on native RBD structure were predicted by in silico algorithms, which predicted changes in the protein structure and function upon the mutations. Subsequently, molecular dynamics (MD) simulations were employed to understand the conformational stability and functional changes on the RBD upon the mutations. The comparative results of MD simulation parameters displayed that the double mutant induces significant conformational changes in the spike glycoprotein RBD, which may alter its biological functions. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-022-03151-0.
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8
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Negi N, Maurya SP, Singh R, Das BK. An update on host immunity correlates and prospects of re-infection in COVID-19. Int Rev Immunol 2021; 41:367-392. [PMID: 34961403 PMCID: PMC8787841 DOI: 10.1080/08830185.2021.2019727] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/18/2021] [Accepted: 12/08/2021] [Indexed: 01/08/2023]
Abstract
Reinfection with SARS-CoV-2 is not frequent yet the incidence rate of it is increasing globally owing to the slow emergence of drift variants that pose a perpetual threat to vaccination strategies and have a greater propensity for disease reoccurrence. Long-term protection against SARS-CoV-2 reinfection relies on the induction of the innate as well as the adaptive immune response endowed with immune memory. However, a multitude of factors including the selection pressure, the waning immunity against SARS-CoV-2 over the first year after infection possibly favors evolution of more infectious immune escape variants, amplifying the risk of reinfection. Additionally, the correlates of immune protection, the novel SARS-CoV-2 variants of concern (VOC), the durability of the adaptive and mucosal immunity remain major challenges for the development of therapeutic and prophylactic interventions. Interestingly, a recent body of evidence indicated that the gastrointestinal (GI) tract is another important target organ for SARS-CoV-2 besides the respiratory system, potentially increasing the likelihood of reinfection by impacting the microbiome and the immune response via the gut-lung axis. In this review, we summarized the latest development in SARS-CoV-2 reinfection, and explored the untapped potential of trained immunity. We also highlighted the immune memory kinetics of the humoral and cell-mediated immune response, genetic drift of the emerging viral variants, and discussed the current challenges in vaccine development. Understanding the dynamics and the quality of immune response by unlocking the power of the innate, humoral and cell-mediated immunity during SARS-CoV-2 reinfection would open newer avenues for drug discovery and vaccine designs.
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Affiliation(s)
- Neema Negi
- Department of Chemical Sciences, University of Limerick, Limerick, Ireland
- Bernal Institute, University of Limerick,Limerick, Ireland
| | - Shesh Prakash Maurya
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Ravinder Singh
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Bimal Kumar Das
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
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9
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Chen J, Vitetta L, Henson JD, Hall S. The intestinal microbiota and improving the efficacy of COVID-19 vaccinations. J Funct Foods 2021; 87:104850. [PMID: 34777578 PMCID: PMC8578005 DOI: 10.1016/j.jff.2021.104850] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/31/2021] [Accepted: 11/06/2021] [Indexed: 02/07/2023] Open
Abstract
Most COVID-19 cases are mild or asymptomatic and recover well, suggesting that effective immune responses ensue, which successfully eliminate SARS-CoV-2 viruses. However, a small proportion of patients develop severe COVID-19 with pathological immune responses. This indicates that a strong immune system balanced with anti-inflammatory mechanisms is critical for the recovery from SARS-CoV-2 infections. Many vaccines against SARS-CoV-2 have now been developed for eliciting effective immune responses to protect from SARS-CoV-2 infections or reduce the severity of the disease if infected. Although uncommon, serious morbidity and mortality have resulted from both COVID-19 vaccine adverse reactions and lack of efficacy, and further improvement of efficacy and prevention of adverse effects are urgently warranted. Many factors could affect efficacy of these vaccines to achieve optimal immune responses. Dysregulation of the gut microbiota (gut dysbiosis) could be an important risk factor as the gut microbiota is associated with the development and maintenance of an effective immune system response. In this narrative review, we discuss the immune responses to SARS-CoV-2, how COVID-19 vaccines elicit protective immune responses, gut dysbiosis involvement in inefficacy and adverse effects of COVID-19 vaccines and the modulation of the gut microbiota by functional foods to improve COVID-19 vaccine immunisations.
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Affiliation(s)
- Jiezhong Chen
- Medlab Clinical, Department of Research, Sydney 2015, Australia
| | - Luis Vitetta
- Medlab Clinical, Department of Research, Sydney 2015, Australia.,The University of Sydney, Faculty of Medicine and Health, Sydney 2006, Australia
| | - Jeremy D Henson
- Medlab Clinical, Department of Research, Sydney 2015, Australia.,The University of New South Wales, Faculty of Medicine, Prince of Wales Clinical School, Sydney, Australia
| | - Sean Hall
- Medlab Clinical, Department of Research, Sydney 2015, Australia
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