1
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Moodley M, Moodley J, Naicker T. Placental neutrophil reverse trans-migration and maternal serum neutrophil extracellular trap expression in HIV infection co-morbid pre-eclampsia in women of African ancestry. Histochem Cell Biol 2024; 162:273-286. [PMID: 38913117 PMCID: PMC11364576 DOI: 10.1007/s00418-024-02298-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2024] [Indexed: 06/25/2024]
Abstract
Neutrophil extracellular traps (NETs) and placental neutrophil reverse transmigration (r-TM) are implicated in the pathogenesis of pre-eclampsia (PE). However, the role of the comorbidity of PE and human immunodeficiency virus (HIV) infection in placental neutrophil r-TM and serum NETs remains unknown. Human placental tissue (n = 160) and serum (n = 80) samples were obtained post-ethical approval and divided by pregnancy type and HIV status and across the study population. Immunohistochemistry and morphometry were performed to localize and quantify junctional adhesion molecule-C (JAM-C) expression as an inverse marker of neutrophil r-TM within placental villi. An enzyme-linked immunosorbent assay (ELISA) was performed to quantify the concentration of citrullinated histone H3 (cit-H3) as a marker of NETs. GraphPad Prism (version 8.0.2) was used to compare the results, and a p value of p < 0.05 was considered statistically significant. The localization of JAM-C was observed on the syncytiotrophoblasts (STBs) and endothelial cells of placental villi. The immunoexpression of JAM-C was elevated in PE vs. normotensive (N) placentae. In the exchange villi, JAM-C immunoexpression was higher in the N+ve vs. N-ve group. However, in PE comorbid HIV infection, JAM-C expression was lower in the PE+ve vs. PE-ve group. Citrullinated histone-H3 concentration was lower in the N+ve vs. N-ve group but elevated in early-onset PE (EOPE)+ve vs. late-onset PE (LOPE)+ve group. These results indicate that PE and HIV-infected placentae individually express elevated JAM-C, manifesting in less neutrophil r-TM. However, in exchange villi of PE comorbid with HIV infection reduced JAM-C enhances neutrophil r-TM, thus supporting the synergistic effect of PE comorbid with HIV.
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Affiliation(s)
- Merantha Moodley
- Department of Obstetrics and Gynecology, School of Clinical Medicine, Women's Health and HIV Research Group, College of Health Sciences, University of KwaZulu-Natal, Durban, 4041, South Africa.
- Optics & Imaging Centre, Doris Duke Medical Research Institute, College of Health Sciences, University of KwaZulu-Natal, Durban, 4041, South Africa.
| | - Jagidesa Moodley
- Department of Obstetrics and Gynecology, School of Clinical Medicine, Women's Health and HIV Research Group, College of Health Sciences, University of KwaZulu-Natal, Durban, 4041, South Africa
| | - Thajasvarie Naicker
- Optics & Imaging Centre, Doris Duke Medical Research Institute, College of Health Sciences, University of KwaZulu-Natal, Durban, 4041, South Africa.
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2
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Wang H, Kim SJ, Lei Y, Wang S, Wang H, Huang H, Zhang H, Tsung A. Neutrophil extracellular traps in homeostasis and disease. Signal Transduct Target Ther 2024; 9:235. [PMID: 39300084 DOI: 10.1038/s41392-024-01933-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 06/25/2024] [Accepted: 07/16/2024] [Indexed: 09/22/2024] Open
Abstract
Neutrophil extracellular traps (NETs), crucial in immune defense mechanisms, are renowned for their propensity to expel decondensed chromatin embedded with inflammatory proteins. Our comprehension of NETs in pathogen clearance, immune regulation and disease pathogenesis, has grown significantly in recent years. NETs are not only pivotal in the context of infections but also exhibit significant involvement in sterile inflammation. Evidence suggests that excessive accumulation of NETs can result in vessel occlusion, tissue damage, and prolonged inflammatory responses, thereby contributing to the progression and exacerbation of various pathological states. Nevertheless, NETs exhibit dual functionalities in certain pathological contexts. While NETs may act as autoantigens, aggregated NET complexes can function as inflammatory mediators by degrading proinflammatory cytokines and chemokines. The delineation of molecules and signaling pathways governing NET formation aids in refining our appreciation of NETs' role in immune homeostasis, inflammation, autoimmune diseases, metabolic dysregulation, and cancer. In this comprehensive review, we delve into the multifaceted roles of NETs in both homeostasis and disease, whilst discussing their potential as therapeutic targets. Our aim is to enhance the understanding of the intricate functions of NETs across the spectrum from physiology to pathology.
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Affiliation(s)
- Han Wang
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Susan J Kim
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Yu Lei
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Shuhui Wang
- Department of Gastroenterology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hui Wang
- Department of Medical Genetics, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hai Huang
- Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Hongji Zhang
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, USA.
| | - Allan Tsung
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, USA.
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3
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da Silva NM, Leite NPDM, Carvalho AE, Almeida VDD, Santos ÍKD, Cavalcanti JRLDP, Fernandes TAADM, Nascimento EGCD, Andrade MFD. The Role of Extracellular Traps in HIV Infection. AIDS Res Hum Retroviruses 2024; 40:308-316. [PMID: 37772695 DOI: 10.1089/aid.2022.0178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023] Open
Abstract
Human immunodeficiency virus (HIV) infection is still an important public health problem, which justifies the research of new therapies to combat it. Recent studies show that Extracellular Traps (ETs) are cellular mechanisms useful in the capture and destruction of some viruses, such as the HIV. Here, we show that neutrophils from peripheral blood, genital tissues, and placenta are activated when exposed to human immunodeficiency virus type 1 (HIV-1) and release Neutrophil Extracellular Traps (NETs). The NETs can capture, neutralize, and inactivate the virus and, also, protect other target cells from HIV infection, as long as the DNA and other constituents of the NETs remain intact. Further, the review indicates that the immunoprotective role of NETs in the context of HIV-1 infection is a promising finding for the development of new antiviral therapies. It is necessary, however, the development of studies that evaluate the tissue injury that NETs can cause and the biological relationships with other cells to improve them as therapeutic targets.
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Affiliation(s)
- Natanias Macson da Silva
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Biomedical Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | | | - Amanda Estevam Carvalho
- Multicenter Graduate Program in Biochemistry and Molecular Biology, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Valéria Duarte de Almeida
- Multicenter Graduate Program in Physiological Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Ísis Kelly Dos Santos
- Department of Physical Education, School of Physical Education, University of Rio Grande do Norte State, Mossoro, Brazil
| | - José Rodolfo Lopes de Paiva Cavalcanti
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Biomedical Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Biochemistry and Molecular Biology, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Physiological Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Thales Allyrio Araújo de Medeiros Fernandes
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Biomedical Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Biochemistry and Molecular Biology, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Physiological Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Ellany Gurgel Cosme do Nascimento
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Biomedical Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Micássio Fernandes de Andrade
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Biochemistry and Molecular Biology, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Health Sciences, School of Biological and Health Sciences, Federal Rural University of the Semi-arid, Mossoro, Brazil
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4
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Li X, Ye Y, Peng K, Zeng Z, Chen L, Zeng Y. Histones: The critical players in innate immunity. Front Immunol 2022; 13:1030610. [PMID: 36479112 PMCID: PMC9720293 DOI: 10.3389/fimmu.2022.1030610] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/07/2022] [Indexed: 11/22/2022] Open
Abstract
The highly conserved histones in different species seem to represent a very ancient and universal innate host defense system against microorganisms in the biological world. Histones are the essential part of nuclear matter and act as a control switch for DNA transcription. However, histones are also found in the cytoplasm, cell membranes, and extracellular fluid, where they function as host defenses and promote inflammatory responses. In some cases, extracellular histones can act as damage-associated molecular patterns (DAMPs) and bind to pattern recognition receptors (PRRs), thereby triggering innate immune responses and causing initial organ damage. Histones and their fragments serve as antimicrobial peptides (AMPs) to directly eliminate bacteria, viruses, fungi, and parasites in vitro and in vivo. Histones are also involved in phagocytes-related innate immune response as components of neutrophil extracellular traps (NETs), neutrophil activators, and plasminogen receptors. In addition, as a considerable part of epigenetic regulation, histone modifications play a vital role in regulating the innate immune response and expression of corresponding defense genes. Here, we review the regulatory role of histones in innate immune response, which provides a new strategy for the development of antibiotics and the use of histones as therapeutic targets for inflammatory diseases, sepsis, autoimmune diseases, and COVID-19.
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Affiliation(s)
- Xia Li
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Youyuan Ye
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Kailan Peng
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Zhuo Zeng
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Li Chen
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hengyang, Hunan, China
| | - Yanhua Zeng
- Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Institute of Pathogenic Biology, Hengyang Medical College, University of South China, Hengyang, Hunan, China,Department of Dermatology and Venereology, The First Affiliated Hospital, University of South China, Hengyang, Hunan, China,*Correspondence: Yanhua Zeng, ;
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5
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Hong W, Yang J, Zou J, Bi Z, He C, Lei H, He X, Li X, Alu A, Ren W, Wang Z, Jiang X, Zhong K, Jia G, Yang Y, Yu W, Huang Q, Yang M, Zhou Y, Zhao Y, Kuang D, Wang J, Wang H, Chen S, Luo M, Zhang Z, Lu T, Chen L, Que H, He Z, Sun Q, Wang W, Shen G, Lu G, Zhao Z, Yang L, Yang J, Wang Z, Li J, Song X, Dai L, Chen C, Geng J, Gou M, Chen L, Dong H, Peng Y, Huang C, Qian Z, Cheng W, Fan C, Wei Y, Su Z, Tong A, Lu S, Peng X, Wei X. Histones released by NETosis enhance the infectivity of SARS-CoV-2 by bridging the spike protein subunit 2 and sialic acid on host cells. Cell Mol Immunol 2022; 19:577-587. [PMID: 35273357 PMCID: PMC8907557 DOI: 10.1038/s41423-022-00845-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 01/26/2022] [Indexed: 02/08/2023] Open
Abstract
Neutrophil extracellular traps (NETs) can capture and kill viruses, such as influenza viruses, human immunodeficiency virus (HIV), and respiratory syncytial virus (RSV), thus contributing to host defense. Contrary to our expectation, we show here that the histones released by NETosis enhance the infectivity of SARS-CoV-2, as found by using live SARS-CoV-2 and two pseudovirus systems as well as a mouse model. The histone H3 or H4 selectively binds to subunit 2 of the spike (S) protein, as shown by a biochemical binding assay, surface plasmon resonance and binding energy calculation as well as the construction of a mutant S protein by replacing four acidic amino acids. Sialic acid on the host cell surface is the key molecule to which histones bridge subunit 2 of the S protein. Moreover, histones enhance cell–cell fusion. Finally, treatment with an inhibitor of NETosis, histone H3 or H4, or sialic acid notably affected the levels of sgRNA copies and the number of apoptotic cells in a mouse model. These findings suggest that SARS-CoV-2 could hijack histones from neutrophil NETosis to promote its host cell attachment and entry process and may be important in exploring pathogenesis and possible strategies to develop new effective therapies for COVID-19.
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Affiliation(s)
- Weiqi Hong
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Jingyun Yang
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Jun Zou
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Zhenfei Bi
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Cai He
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Hong Lei
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Xuemei He
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Xue Li
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Aqu Alu
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Wenyan Ren
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Zeng Wang
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Xiaohua Jiang
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Kunhong Zhong
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Guowen Jia
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Yun Yang
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - Wenhai Yu
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - Qing Huang
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - Mengli Yang
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - Yanan Zhou
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - Yuan Zhao
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - Dexuan Kuang
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - Junbin Wang
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - Haixuan Wang
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China
| | - Siyuan Chen
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Min Luo
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Ziqi Zhang
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Tianqi Lu
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Li Chen
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Haiying Que
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Zhiyao He
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Qiu Sun
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Wei Wang
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China
| | - Guobo Shen
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China
| | - Guangwen Lu
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China
| | - Zhiwei Zhao
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China
| | - Li Yang
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China
| | - Jinliang Yang
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China
| | - Zhenling Wang
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China
| | - Jiong Li
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China
| | - Xiangrong Song
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Lunzhi Dai
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Chong Chen
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Jia Geng
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Maling Gou
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Lu Chen
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Haohao Dong
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Yong Peng
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Canhua Huang
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Zhiyong Qian
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Wei Cheng
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Changfa Fan
- Division of Animal Model Research, Institute for Laboratory Animal Resources, National Institutes for Food and Drug Control, 102629, Beijing, China
| | - Yuquan Wei
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China
| | - Zhaoming Su
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China
| | - Aiping Tong
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China.
| | - Shuaiyao Lu
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China.
| | - Xiaozhong Peng
- National Kunming High-level Biosafety Primate Research Center, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Yunnan, China. .,State Key Laboratory of Medical Molecular Biology, Department of Molecular Biology and Biochemistry, Institute of Basic Medical Sciences, Medical Primate Research Center, Neuroscience Center, Chinese Academy of Medical Sciences, School of Basic Medicine Peking Union Medical College, Beijing, China.
| | - Xiawei Wei
- Laboratory of Aging Research and Cancer Drug Targeting, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, Sichuan, 610041, China. .,Westvac Biopharm Co., Ltd. No. 618, Fenghuang Road, Shuangliu District, Chengdu, Sichuan, China.
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Rast JP, D'Alessio S, Kraev I, Lange S. Post-translational protein deimination signatures in sea lamprey (Petromyzon marinus) plasma and plasma-extracellular vesicles. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 125:104225. [PMID: 34358577 DOI: 10.1016/j.dci.2021.104225] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/30/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Lampreys are a jawless vertebrate species belonging to an ancient vertebrate lineage that diverged from a common ancestor with humans ~500 million years ago. The sea lamprey (Petromyzon marinus) has a filter feeding ammocoete larval stage that metamorphoses into a parasitic adult, feeding both on teleost and elasmobranch fish. Lampreys are a valuable comparative model species for vertebrate immunity and physiology due to their unique phylogenetic position, unusual adaptive immune system, and physiological adaptions such as tolerance to salinity changes and urea. Peptidylarginine deiminases (PADs) are a phylogenetically conserved enzyme family which catalyses post-translational deimination/citrullination in target proteins, enabling proteins to gain new functions (moonlighting). The identification of deiminated protein targets in species across phylogeny may provide novel insights into post-translational regulation of physiological and pathophysiological processes. Extracellular vesicles (EVs) are membrane vesicles released from cells that carry cargos of small molecules and proteins for cellular communication, involved in both normal and pathological processes. The current study identified deimination signatures in proteins of both total plasma and plasma-EVs in sea lamprey and furthermore reports the first characterisation of plasma-EVs in lamprey. EVs were poly-dispersed in the size range of 40-500 nm, similar to what is observed in other taxa, positive for CD63 and Flotillin-1. Plasma-EV morphology was confirmed by transmission electron microscopy. Assessment of deimination/citrullination signatures in lamprey plasma and plasma-EVs, revealed 72 deimination target proteins involved in immunity, metabolism and gene regulation in whole plasma, and 37 target proteins in EVs, whereof 24 were shared targets. Furthermore, the presence of deiminated histone H3, indicative of gene-regulatory mechanisms and also a marker of neutrophil extracellular trap formation (NETosis), was confirmed in lamprey plasma. Functional protein network analysis revealed some differences in KEGG and GO pathways of deiminated proteins in whole plasma compared with plasma-EVs. For example, while common STRING network clusters in plasma and plasma-EVs included Peptide chain elongation, Viral mRNA translation, Glycolysis and gluconeogenesis, STRING network clusters specific for EVs only included: Cellular response to heat stress, Muscle protein and striated muscle thin filament, Nucleosome, Protein processing in endoplasmic reticulum, Nucleosome and histone deacetylase complex. STRING network clusters specific for plasma were: Adipokinetic hormone receptor activity, Fibrinogen alpha/beta chain family, peptidase S1A, Glutathione synthesis and recycling-arginine, Fructose 1,6-bisphosphate metabolic process, Carbon metabolism and lactate dehydrogenase activity, Post-translational protein phosphorylation, Regulation of insulin-like growth factor transport and clotting cascade. Overall, for the EV citrullinome, five STRING network clusters, 10 KEGG pathways, 15 molecular GO pathways and 29 Reactome pathways were identified, compared with nine STRING network clusters, six KEGG pathways, two Molecular GO pathways and one Reactome pathway specific for whole plasma; while further pathways were shared. The reported findings indicate that major pathways relevant for immunity and metabolism are targets of deimination in lamprey plasma and plasma-EVs, with some differences, and may help elucidating roles for the conserved PAD enzyme family in regulation of immune and metabolic function throughout phylogeny.
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Affiliation(s)
- Jonathan P Rast
- Emory University School of Medicine, Pathology & Laboratory Medicine, Atlanta, GA, 30322, USA.
| | - Stefania D'Alessio
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London, W1W 6UW, UK
| | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science, Technology, Engineering and Mathematics, Open University, Milton Keynes, MK7 6AA, UK.
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London, W1W 6UW, UK.
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D’Alessio S, Buckley KM, Kraev I, Hayes P, Lange S. Extracellular Vesicle Signatures and Post-Translational Protein Deimination in Purple Sea Urchin ( Strongylocentrotus purpuratus) Coelomic Fluid-Novel Insights into Echinodermata Biology. BIOLOGY 2021; 10:866. [PMID: 34571743 PMCID: PMC8464700 DOI: 10.3390/biology10090866] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 12/13/2022]
Abstract
The purple sea urchin (Strongylocentrotus purpuratus) is a marine invertebrate of the class Echinoidea that serves as an important research model for developmental biology, cell biology, and immunology, as well as for understanding regenerative responses and ageing. Peptidylarginine deiminases (PADs) are calcium-dependent enzymes that mediate post-translational protein deimination/citrullination. These alterations affect protein function and may also play roles in protein moonlighting. Extracellular vesicles (EVs) are membrane-bound vesicles that are released from cells as a means of cellular communication. Their cargo includes a range of protein and RNA molecules. EVs can be isolated from many body fluids and are therefore used as biomarkers in physiological and pathological responses. This study assessed EVs present in the coelomic fluid of the purple sea urchin (Strongylocentrotus purpuratus), and identified both total protein cargo as well as the deiminated protein cargo. Deiminated proteins in coelomic fluid EVs were compared with the total deiminated proteins identified in coelomic fluid to assess putative differences in deiminated protein targets. Functional protein network analysis for deiminated proteins revealed pathways for immune, metabolic, and gene regulatory functions within both total coelomic fluid and EVs. Key KEGG and GO pathways for total EV protein cargo furthermore showed some overlap with deimination-enriched pathways. The findings presented in this study add to current understanding of how post-translational deimination may shape immunity across the phylogeny tree, including possibly via PAD activity from microbiota symbionts. Furthermore, this study provides a platform for research on EVs as biomarkers in sea urchin models.
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Affiliation(s)
- Stefania D’Alessio
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6UW, UK; (S.D.); (P.H.)
| | | | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science, Technology, Engineering and Mathematics, Open University, Milton Keynes MK7 6AA, UK;
| | - Polly Hayes
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6UW, UK; (S.D.); (P.H.)
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6UW, UK; (S.D.); (P.H.)
- UCL EGA Institute for Women’s Health, Maternal and Fetal Medicine, London WC1E 6AU, UK
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HIV Associated Preeclampsia: A Multifactorial Appraisal. Int J Mol Sci 2021; 22:ijms22179157. [PMID: 34502066 PMCID: PMC8431090 DOI: 10.3390/ijms22179157] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/16/2021] [Accepted: 08/18/2021] [Indexed: 12/13/2022] Open
Abstract
Introduction: This review explores angiogenesis, vascular dysfunction, the complement system, RAAS, apoptosis and NETosis as potential pathways that are dysregulated during preeclampsia, HIV infection and ART usage. Results: HIV-1 accessory and matrix proteins are protagonists for the elevation of oxidative stress, apoptosis, angiogenesis, and elevation of adhesion markers. Despite the immunodeficiency during HIV-1 infection, HIV-1 exploits our cellular defence arsenal by escaping cell-mediated lysis, yet HIV-1 infectivity is enhanced via C5a release of TNF-α and IL-6. This review demonstrates that PE is an oxidatively stressed microenvironment associated with increased apoptosis and NETosis, but with a decline in angiogenesis. Immune reconstitution in the duality of HIV-1 and PE by protease inhibitors, HAART and nucleoside reverse transcriptase, affect similar cellular pathways that eventuate in loss of endothelial cell integrity and, hence, its dysfunction. Conclusions: HIV-1 infection, preeclampsia and ARTs differentially affect endothelial cell function. In the synergy of both conditions, endothelial dysfunction predominates. This knowledge will help us to understand the effect of HIV infection and ART on immune reconstitution in preeclampsia.
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Chook CYB, Chen FM, Tse G, Leung FP, Wong WT. Crocodile blood supplementation protects vascular function in diabetic mice. FOOD PRODUCTION, PROCESSING AND NUTRITION 2021. [PMCID: PMC8328534 DOI: 10.1186/s43014-021-00066-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Abstract
Cardiovascular disease is a major cause of mortality in diabetic patients due to the heightened oxidative stress and pro-inflammatory state in vascular tissues. Effective approaches targeting cardiovascular health for diabetic patients are urgently needed. Crocodile blood, an emerging dietary supplement, was suggested to have anti-oxidative and anti-inflammatory effects in vitro, which have yet to be proven in animal models. This study thereby aimed to evaluate whether crocodile blood can protect vascular function in diabetic mice against oxidation and inflammation. Diabetic db/db mice and their counterparts db/m+ mice were treated daily with crocodile blood soluble fraction (CBSF) or vehicle via oral gavage for 4 weeks before their aortae were harvested for endothelium-dependent relaxation (EDR) quantification using wire myograph, which is a well-established functional study for vascular function indication. Organ culture experiments culturing mouse aortae from C57BL/6 J mice with or without IL-1β and CBSF were done to evaluate the direct effect of CBSF on endothelial function. Reactive oxygen species (ROS) levels in mouse aortae were assessed by dihydroethidium (DHE) staining with inflammatory markers in endothelial cells quantified by quantitative polymerase chain reaction (qPCR). CBSF significantly improved deteriorated EDR in db/db diabetic mice through both diet supplementation and direct culture, with suppression of ROS level in mouse aortae. CBSF also maintained EDR and reduced ROS levels in mouse aortae against the presence of pro-inflammatory IL-1β. Under the pro-inflammatory state induced by IL-1β, gene expressions of inflammatory cytokines were downregulated, while the protective transcripts UCP2 and SIRT6 were upregulated in endothelial cells. Our study suggests a novel beneficial effect of crocodile blood on vascular function in diabetic mice and that supplementation of diet with crocodile blood may act as a complementary approach to protect against vascular diseases through anti-oxidation and anti-inflammation in diabetic patients.
Graphical abstract
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10
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Chook CYB, Chen FM, Leung FP, Chen ZY, Wong WT. Potential of crocodile blood as a medication and dietary supplement: A systemic review. Clin Exp Pharmacol Physiol 2021; 48:1043-1058. [PMID: 33987869 DOI: 10.1111/1440-1681.13524] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/04/2021] [Accepted: 05/10/2021] [Indexed: 12/16/2022]
Abstract
Crocodile blood has long been used as a traditional medicine in many Asian countries to treat diseases such as asthma, allergies, and many others. Yet, only recently has the safety and effectiveness of using crocodile blood as a medicine been examined using modern scientific methods; with both conserved and novel active components identified from crocodile blood. Further in vitro and in vivo investigations found that crocodile blood can have a wide range of beneficial effects, including antimicrobial, antiviral, anti-oxidative, anti-inflammatory, antitumour effects, anti-anaemia, and enhancement of wound healing. A systematic research of literature published in English-language journals up to April 2020 was conducted in PubMed, Google Scholar, and Web of Science. Based on the biological and chemical knowledge of crocodile immunity and crocodile blood, this article aims to: provide a critical review on the proposed properties of crocodile blood, identify the knowledge gap and offer some insights for future investigations regarding the use of crocodile blood as a medication or dietary supplement.
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Affiliation(s)
- Chui Yiu Bamboo Chook
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Francis M Chen
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Fung Ping Leung
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Zhen-Yu Chen
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong, China
| | - Wing Tak Wong
- School of Life Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China
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Post-Translational Protein Deimination Signatures in Plasma and Plasma EVs of Reindeer ( Rangifer tarandus). BIOLOGY 2021; 10:biology10030222. [PMID: 33805829 PMCID: PMC7998281 DOI: 10.3390/biology10030222] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 03/05/2021] [Accepted: 03/11/2021] [Indexed: 12/17/2022]
Abstract
Simple Summary Reindeer are an important wild and domesticated species of the Arctic, Northern Europe, Siberia and North America. As reindeer have developed various strategies to adapt to extreme environments, this makes them an interesting species for studies into diversity of immune and metabolic functions in the animal kingdom. Importantly, while reindeer carry natural infections caused by viruses (including coronaviruses), bacteria and parasites, they can also act as carriers for transmitting such diseases to other animals and humans, so called zoonosis. Reindeer are also affected by chronic wasting disease, a neuronal disease caused by prions, similar to scrapie in sheep, mad cows disease in cattle and Creutzfeldt-Jakob disease in humans. The current study assessed a specific protein modification called deimination/citrullination, which can change how proteins function and allow them to take on different roles in health and disease processes. Profiling of deiminated proteins in reindeer showed that many important pathways for immune defenses, prion diseases and metabolism are enriched in deiminated proteins, both in plasma, as well as in plasma extracellular vesicles. This study provides a platform for the development of novel biomarkers to assess wild life health status and factors relating to zoonotic disease. Abstract The reindeer (caribou) Rangifer tarandus is a Cervidae in the order Artiodactyla. Reindeer are sedentary and migratory populations with circumpolar distribution in the Arctic, Northern Europe, Siberia and North America. Reindeer are an important wild and domesticated species, and have developed various adaptive strategies to extreme environments. Importantly, deer have also been identified to be putative zoonotic carriers, including for parasites, prions and coronavirus. Therefore, novel insights into immune-related markers are of considerable interest. Peptidylarginine deiminases (PADs) are a phylogenetically conserved enzyme family which causes post-translational protein deimination by converting arginine into citrulline in target proteins. This affects protein function in health and disease. Extracellular vesicles (EVs) participate in cellular communication, in physiological and pathological processes, via transfer of cargo material, and their release is partly regulated by PADs. This study assessed deiminated protein and EV profile signatures in plasma from sixteen healthy wild female reindeer, collected in Iceland during screening for parasites and chronic wasting disease. Reindeer plasma EV profiles showed a poly-dispersed distribution from 30 to 400 nm and were positive for phylogenetically conserved EV-specific markers. Deiminated proteins were isolated from whole plasma and plasma EVs, identified by proteomic analysis and protein interaction networks assessed by KEGG and GO analysis. This revealed a large number of deimination-enriched pathways for immunity and metabolism, with some differences between whole plasma and EVs. While shared KEGG pathways for whole plasma and plasma EVs included complement and coagulation pathways, KEGG pathways specific for EVs were for protein digestion and absorption, platelet activation, amoebiasis, the AGE–RAGE signaling pathway in diabetic complications, ECM receptor interaction, the relaxin signaling pathway and the estrogen signaling pathway. KEGG pathways specific for whole plasma were pertussis, ferroptosis, SLE, thyroid hormone synthesis, phagosome, Staphylococcus aureus infection, vitamin digestion and absorption, and prion disease. Further differences were also found between molecular function and biological processes GO pathways when comparing functional STRING networks for deiminated proteins in EVs, compared with deiminated proteins in whole plasma. This study highlights deiminated proteins and EVs as candidate biomarkers for reindeer health and may provide information on regulation of immune pathways in physiological and pathological processes, including neurodegenerative (prion) disease and zoonosis.
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Chambard M, Plasson C, Derambure C, Coutant S, Tournier I, Lefranc B, Leprince J, Kiefer-Meyer MC, Driouich A, Follet-Gueye ML, Boulogne I. New Insights into Plant Extracellular DNA. A Study in Soybean Root Extracellular Trap. Cells 2021; 10:E69. [PMID: 33466245 PMCID: PMC7824799 DOI: 10.3390/cells10010069] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 12/13/2022] Open
Abstract
exDNA is found in various organisms, including plants. However, plant exDNA has thus far received little attention related to its origin and role in the RET (root extracellular trap). In this study, we performed the first high-throughput genomic sequencing of plant exDNA from a Fabaceae with worldwide interest: soybean (Glycine max (L.) Merr.). The origin of this exDNA was first investigated in control condition, and the results show high-coverage on organelles (mitochondria/plastid) DNA relative to nuclear DNA, as well as a mix of coding and non-coding sequences. In the second part of this study, we investigated if exDNA release was modified during an elicitation with PEP-13 (a peptide elicitor from oomycete genus Phytophthora). Our results show that treatment of roots with PEP-13 does not affect the composition of exDNA.
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Affiliation(s)
- Marie Chambard
- Normandie University, UNIROUEN, UFR des Sciences et Techniques, Glyco-MEV EA4358, SFR NORVEGE FED 4277, 76821 Mont-Saint-Aignan, France; (C.P.); (M.-C.K.-M.); (A.D.); (M.-L.F.-G.); (I.B.)
- Fédération de Recherche Normandie-Végétal, FED 4277, 76821 Mont-Saint-Aignan, France
| | - Carole Plasson
- Normandie University, UNIROUEN, UFR des Sciences et Techniques, Glyco-MEV EA4358, SFR NORVEGE FED 4277, 76821 Mont-Saint-Aignan, France; (C.P.); (M.-C.K.-M.); (A.D.); (M.-L.F.-G.); (I.B.)
- Fédération de Recherche Normandie-Végétal, FED 4277, 76821 Mont-Saint-Aignan, France
| | - Céline Derambure
- Normandy Center for Genomic and Personalized Medicine, 76000 Rouen, France; (C.D.); (S.C.); (I.T.)
| | - Sophie Coutant
- Normandy Center for Genomic and Personalized Medicine, 76000 Rouen, France; (C.D.); (S.C.); (I.T.)
| | - Isabelle Tournier
- Normandy Center for Genomic and Personalized Medicine, 76000 Rouen, France; (C.D.); (S.C.); (I.T.)
| | - Benjamin Lefranc
- Plateforme de Recherche en Imagerie Cellulaire de Normandie (PRIMACEN), Normandie Université UNIROUEN, INSERM U1239, 76000 Rouen, France; (B.L.); (J.L.)
| | - Jérôme Leprince
- Plateforme de Recherche en Imagerie Cellulaire de Normandie (PRIMACEN), Normandie Université UNIROUEN, INSERM U1239, 76000 Rouen, France; (B.L.); (J.L.)
| | - Marie-Christine Kiefer-Meyer
- Normandie University, UNIROUEN, UFR des Sciences et Techniques, Glyco-MEV EA4358, SFR NORVEGE FED 4277, 76821 Mont-Saint-Aignan, France; (C.P.); (M.-C.K.-M.); (A.D.); (M.-L.F.-G.); (I.B.)
- Fédération de Recherche Normandie-Végétal, FED 4277, 76821 Mont-Saint-Aignan, France
| | - Azeddine Driouich
- Normandie University, UNIROUEN, UFR des Sciences et Techniques, Glyco-MEV EA4358, SFR NORVEGE FED 4277, 76821 Mont-Saint-Aignan, France; (C.P.); (M.-C.K.-M.); (A.D.); (M.-L.F.-G.); (I.B.)
- Fédération de Recherche Normandie-Végétal, FED 4277, 76821 Mont-Saint-Aignan, France
| | - Marie-Laure Follet-Gueye
- Normandie University, UNIROUEN, UFR des Sciences et Techniques, Glyco-MEV EA4358, SFR NORVEGE FED 4277, 76821 Mont-Saint-Aignan, France; (C.P.); (M.-C.K.-M.); (A.D.); (M.-L.F.-G.); (I.B.)
- Fédération de Recherche Normandie-Végétal, FED 4277, 76821 Mont-Saint-Aignan, France
| | - Isabelle Boulogne
- Normandie University, UNIROUEN, UFR des Sciences et Techniques, Glyco-MEV EA4358, SFR NORVEGE FED 4277, 76821 Mont-Saint-Aignan, France; (C.P.); (M.-C.K.-M.); (A.D.); (M.-L.F.-G.); (I.B.)
- Fédération de Recherche Normandie-Végétal, FED 4277, 76821 Mont-Saint-Aignan, France
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13
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Bowden TJ, Kraev I, Lange S. Extracellular Vesicles and Post-Translational Protein Deimination Signatures in Mollusca-The Blue Mussel ( Mytilus edulis), Soft Shell Clam ( Mya arenaria), Eastern Oyster ( Crassostrea virginica) and Atlantic Jacknife Clam ( Ensis leei). BIOLOGY 2020; 9:biology9120416. [PMID: 33255637 PMCID: PMC7760292 DOI: 10.3390/biology9120416] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 12/20/2022]
Abstract
Simple Summary Oysters and clams form an important component of the food chain and food security and are of considerable commercial value worldwide. They are affected by pollution and climate change, as well as a range of infections, some of which are opportunistic. For aquaculture purposes they are furthermore of great commercial value and changes in their immune responses can also serve as indicators of changes in ocean environments. Therefore, studies into understanding new factors in their immune systems may aid new biomarker discovery and are of considerable value. This study assessed new biomarkers relating to changes in protein function in four economically important marine molluscs, the blue mussel, soft shell clam, Eastern oyster, and Atlantic jacknife clam. These findings indicate novel regulatory mechanisms of important metabolic and immunology related pathways in these mollusks. The findings provide new understanding to how these pathways function in diverse ways in different animal species as well as aiding new biomarker discovery for Mollusca aquaculture. Abstract Oysters and clams are important for food security and of commercial value worldwide. They are affected by anthropogenic changes and opportunistic pathogens and can be indicators of changes in ocean environments. Therefore, studies into biomarker discovery are of considerable value. This study aimed at assessing extracellular vesicle (EV) signatures and post-translational protein deimination profiles of hemolymph from four commercially valuable Mollusca species, the blue mussel (Mytilus edulis), soft shell clam (Mya arenaria), Eastern oyster (Crassostrea virginica), and Atlantic jacknife clam (Ensis leei). EVs form part of cellular communication by transporting protein and genetic cargo and play roles in immunity and host–pathogen interactions. Protein deimination is a post-translational modification caused by peptidylarginine deiminases (PADs), and can facilitate protein moonlighting in health and disease. The current study identified hemolymph-EV profiles in the four Mollusca species, revealing some species differences. Deiminated protein candidates differed in hemolymph between the species, with some common targets between all four species (e.g., histone H3 and H4, actin, and GAPDH), while other hits were species-specific; in blue mussel these included heavy metal binding protein, heat shock proteins 60 and 90, 2-phospho-D-glycerate hydrolyase, GTP cyclohydrolase feedback regulatory protein, sodium/potassium-transporting ATPase, and fibrinogen domain containing protein. In soft shell clam specific deimination hits included dynein, MCM3-associated protein, and SCRN. In Eastern oyster specific deimination hits included muscle LIM protein, beta-1,3-glucan-binding protein, myosin heavy chain, thaumatin-like protein, vWFA domain-containing protein, BTB domain-containing protein, amylase, and beta-catenin. Deiminated proteins specific to Atlantic jackknife clam included nacre c1q domain-containing protein and PDZ domain-containing protein In addition, some proteins were common as deiminated targets between two or three of the Bivalvia species under study (e.g., EP protein, C1q domain containing protein, histone H2B, tubulin, elongation factor 1-alpha, dominin, extracellular superoxide dismutase). Protein interaction network analysis for the deiminated protein hits revealed major pathways relevant for immunity and metabolism, providing novel insights into post-translational regulation via deimination. The study contributes to EV characterization in diverse taxa and understanding of roles for PAD-mediated regulation of immune and metabolic pathways throughout phylogeny.
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Affiliation(s)
- Timothy J. Bowden
- Aquaculture Research Institute, School of Food & Agriculture, University of Maine, Orono, ME 04469-5735, USA;
| | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science, Technology, Engineering and Mathematics, Open University, Milton Keynes MK7 6AA, UK;
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6UW, UK
- Correspondence: ; Tel.: +44-(0)207-911-5000
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Bowden TJ, Kraev I, Lange S. Extracellular vesicles and post-translational protein deimination signatures in haemolymph of the American lobster (Homarus americanus). FISH & SHELLFISH IMMUNOLOGY 2020; 106:79-102. [PMID: 32731012 DOI: 10.1016/j.fsi.2020.06.053] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/21/2020] [Accepted: 06/27/2020] [Indexed: 06/11/2023]
Abstract
The American lobster (Homarus americanus) is a commercially important crustacean with an unusual long life span up to 100 years and a comparative animal model of longevity. Therefore, research into its immune system and physiology is of considerable importance both for industry and comparative immunology studies. Peptidylarginine deiminases (PADs) are a phylogenetically conserved enzyme family that catalyses post-translational protein deimination via the conversion of arginine to citrulline. This can lead to structural and functional protein changes, sometimes contributing to protein moonlighting, in health and disease. PADs also regulate the cellular release of extracellular vesicles (EVs), which is an important part of cellular communication, both in normal physiology and in immune responses. Hitherto, studies on EVs in Crustacea are limited and neither PADs nor associated protein deimination have been studied in a Crustacean species. The current study assessed EV and deimination signatures in haemolymph of the American lobster. Lobster EVs were found to be a poly-dispersed population in the 10-500 nm size range, with the majority of smaller EVs, which fell within 22-115 nm. In lobster haemolymph, 9 key immune and metabolic proteins were identified to be post-translationally deiminated, while further 41 deiminated protein hits were identified when searching against a Crustacean database. KEGG (Kyoto encyclopedia of genes and genomes) and GO (gene ontology) enrichment analysis of these deiminated proteins revealed KEGG and GO pathways relating to a number of immune, including anti-pathogenic (viral, bacterial, fungal) and host-pathogen interactions, as well as metabolic pathways, regulation of vesicle and exosome release, mitochondrial function, ATP generation, gene regulation, telomerase homeostasis and developmental processes. The characterisation of EVs, and post-translational deimination signatures, reported in lobster in the current study, and the first time in Crustacea, provides insights into protein moonlighting functions of both species-specific and phylogenetically conserved proteins and EV-mediated communication in this long-lived crustacean. The current study furthermore lays foundation for novel biomarker discovery for lobster aquaculture.
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Affiliation(s)
- Timothy J Bowden
- Aquaculture Research Institute, School of Food & Agriculture, University of Maine, Orono, ME, USA.
| | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science,Technology, Engineering and Mathematics, Open University, Milton Keynes, MK7 6AA, UK.
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London, W1W 6UW, UK.
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Moodley M, Moodley J, Naicker T. The Role of Neutrophils and Their Extracellular Traps in the Synergy of Pre-eclampsia and HIV Infection. Curr Hypertens Rep 2020; 22:41. [PMID: 32462480 DOI: 10.1007/s11906-020-01047-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE OF THE REVIEW In our innate immune system, neutrophils are the first cells to sense signals of infection and to proceed to kill the invading pathogen. This is mediated by their production of neutrophil extracellular traps (NETS) to entrap pathogenic micro-organisms, preventing their amplification and dissemination. Pre-eclampsia (PE) is the leading cause of global maternal mortality, yet to date, there is no cure nor a gold-standard diagnostic strategy. The purpose of this review is to discover the role of neutrophils in PE as early identification markers. Additionally, this review aims to explore the role of neutrophils in HIV-infected pregnancies with PE as a source of synergy. RECENT FINDINGS Recent findings demonstrate an elevation of neutrophils and neutrophil extracellular traps (NETs) in PE placentae. This is due to their activation by excessive release of syncytiotrophoblast microparticles (STBM). There is also an elevation of NETs in HIV-infected placentae-where histone H3 entraps HIV by binding to its glycoprotein envelope. Additionally, histones H1 and H2A inhibit HIV infection. It is interesting to note that women with both PE and HIV infection have supressed NETs. This review focuses on the role of neutrophils in the synergy of PE and HIV infection. It is plausible that the deregulation of NETs in the synergy of pre-eclamptic HIV-infected women is strategic for the entrapment of the HIV-1 virus. Finally, it is plausible that neutrophils and NETS may act as early biomarkers of PE development. Graphical abstract.
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Affiliation(s)
- Merantha Moodley
- Department of Obstetrics and Gynaecology, School of Clinical Medicine, College of Health Sciences, Nelson R Mandela School of Medicine, University of Kwa Zulu Natal, Durban, South Africa. .,Discipline of Optics and Imaging, Doris Duke Medical Research Institute, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa.
| | - Jagidesa Moodley
- Women's Health and HIV Research Group, Department of Obstetrics and Gynaecology, School of Clinical Medicine, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Thajasvarie Naicker
- Discipline of Optics and Imaging, Doris Duke Medical Research Institute, Nelson R Mandela School of Medicine, University of KwaZulu-Natal, Durban, South Africa
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Criscitiello MF, Kraev I, Petersen LH, Lange S. Deimination Protein Profiles in Alligator mississippiensis Reveal Plasma and Extracellular Vesicle-Specific Signatures Relating to Immunity, Metabolic Function, and Gene Regulation. Front Immunol 2020; 11:651. [PMID: 32411128 PMCID: PMC7198796 DOI: 10.3389/fimmu.2020.00651] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 03/23/2020] [Indexed: 12/13/2022] Open
Abstract
Alligators are crocodilians and among few species that endured the Cretaceous-Paleogene extinction event. With long life spans, low metabolic rates, unusual immunological characteristics, including strong antibacterial and antiviral ability, and cancer resistance, crocodilians may hold information for molecular pathways underlying such physiological traits. Peptidylarginine deiminases (PADs) are a group of calcium-activated enzymes that cause posttranslational protein deimination/citrullination in a range of target proteins contributing to protein moonlighting functions in health and disease. PADs are phylogenetically conserved and are also a key regulator of extracellular vesicle (EV) release, a critical part of cellular communication. As little is known about PAD-mediated mechanisms in reptile immunology, this study was aimed at profiling EVs and protein deimination in Alligator mississippiensis. Alligator plasma EVs were found to be polydispersed in a 50-400-nm size range. Key immune, metabolic, and gene regulatory proteins were identified to be posttranslationally deiminated in plasma and plasma EVs, with some overlapping hits, while some were unique to either plasma or plasma EVs. In whole plasma, 112 target proteins were identified to be deiminated, while 77 proteins were found as deiminated protein hits in plasma EVs, whereof 31 were specific for EVs only, including proteins specific for gene regulatory functions (e.g., histones). Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed KEGG pathways specific to deiminated proteins in whole plasma related to adipocytokine signaling, while KEGG pathways of deiminated proteins specific to EVs included ribosome, biosynthesis of amino acids, and glycolysis/gluconeogenesis pathways as well as core histones. This highlights roles for EV-mediated export of deiminated protein cargo with roles in metabolism and gene regulation, also related to cancer. The identification of posttranslational deimination and EV-mediated communication in alligator plasma revealed here contributes to current understanding of protein moonlighting functions and EV-mediated communication in these ancient reptiles, providing novel insight into their unusual immune systems and physiological traits. In addition, our findings may shed light on pathways underlying cancer resistance, antibacterial and antiviral resistance, with translatable value to human pathologies.
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Affiliation(s)
- Michael F. Criscitiello
- Comparative Immunogenetics Laboratory, Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
- Department of Microbial Pathogenesis and Immunology, College of Medicine, Texas A&M Health Science Center, Texas A&M University, College Station, TX, United States
| | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science, Technology, Engineering and Mathematics, Open University, Milton Keynes, United Kingdom
| | - Lene H. Petersen
- Department of Marine Biology, Texas A&M University at Galvestone, Galveston, TX, United States
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London, United Kingdom
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Criscitiello MF, Kraev I, Lange S. Post-Translational Protein Deimination Signatures in Serum and Serum-Extracellular Vesicles of Bos taurus Reveal Immune, Anti-Pathogenic, Anti-Viral, Metabolic and Cancer-Related Pathways for Deimination. Int J Mol Sci 2020; 21:E2861. [PMID: 32325910 PMCID: PMC7215346 DOI: 10.3390/ijms21082861] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 12/14/2022] Open
Abstract
The bovine immune system is known for its unusual traits relating to immunoglobulin and antiviral responses. Peptidylarginine deiminases (PADs) are phylogenetically conserved enzymes that cause post-translational deimination, contributing to protein moonlighting in health and disease. PADs also regulate extracellular vesicle (EV) release, forming a critical part of cellular communication. As PAD-mediated mechanisms in bovine immunology and physiology remain to be investigated, this study profiled deimination signatures in serum and serum-EVs in Bos taurus. Bos EVs were poly-dispersed in a 70-500 nm size range and showed differences in deiminated protein cargo, compared with whole sera. Key immune, metabolic and gene regulatory proteins were identified to be post-translationally deiminated with some overlapping hits in sera and EVs (e.g., immunoglobulins), while some were unique to either serum or serum-EVs (e.g., histones). Protein-protein interaction network analysis of deiminated proteins revealed KEGG pathways common for serum and serum-EVs, including complement and coagulation cascades, viral infection (enveloped viruses), viral myocarditis, bacterial and parasitic infections, autoimmune disease, immunodeficiency intestinal IgA production, B-cell receptor signalling, natural killer cell mediated cytotoxicity, platelet activation and hematopoiesis, alongside metabolic pathways including ferroptosis, vitamin digestion and absorption, cholesterol metabolism and mineral absorption. KEGG pathways specific to EVs related to HIF-1 signalling, oestrogen signalling and biosynthesis of amino acids. KEGG pathways specific for serum only, related to Epstein-Barr virus infection, transcription mis-regulation in cancer, bladder cancer, Rap1 signalling pathway, calcium signalling pathway and ECM-receptor interaction. This indicates differences in physiological and pathological pathways for deiminated proteins in serum-EVs, compared with serum. Our findings may shed light on pathways underlying a number of pathological and anti-pathogenic (viral, bacterial, parasitic) pathways, with putative translatable value to human pathologies, zoonotic diseases and development of therapies for infections, including anti-viral therapies.
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Affiliation(s)
- Michael F. Criscitiello
- Comparative Immunogenetics Laboratory, Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA;
- Department of Microbial Pathogenesis and Immunology, College of Medicine, Texas A&M Health Science Center, Texas A&M University, College Station, TX 77843, USA
| | - Igor Kraev
- Electron Microscopy Suite, Faculty of Science, Technology, Engineering and Mathematics, Open University, Milton Keynes MK7 6AA, UK;
| | - Sigrun Lange
- Tissue Architecture and Regeneration Research Group, School of Life Sciences, University of Westminster, London W1W 6XH, UK
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Moodley M, Moodley J, Naicker T. Neutrophil extracellular traps: The synergy source in the placentae of HIV infected women with pre-eclampsia. Pregnancy Hypertens 2020; 20:69-74. [PMID: 32193148 DOI: 10.1016/j.preghy.2020.03.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 03/02/2020] [Accepted: 03/07/2020] [Indexed: 12/23/2022]
Abstract
OBJECTIVES To immuno-localize histone H2A expression as a marker of neutrophil extracellular traps (NETs) in the placenta; and to quantify and compare the percentage H2A immune-expression as a marker of NETs in the placental intervillous space according to: pregnancy type, HIV status and across the study population. STUDY DESIGN The participants to the study were a pregnant South African population group of African ancestry (n = 60) stratified as normotensive (N) (n = 30) or pre-eclamptic (PE) (n = 30) and further subdivided as HIV infected (HIV+) (n = 15) or HIV naïve (HIV-) (n = 15). Following informed consent placental tissue samples were obtained at the time of delivery. Immunohistochemistry using the anti-histone 2A (H2A) antibody as a biomarker of NETs, and morphometric image analysis was used to immuno-localize and quantify placental H2A immuno-expression respectively in the placental inter-villous space. Statistical analysis was performed using Graph Pad Prism software (Version 5). MAIN OUTCOME MEASURES To determine if HIV neutralizes the elevated NETs in PE. RESULTS NETs were localized within the inter-villous space surrounding the exchange villi and conducting villi of placental tissue. Based on HIV status, a significant elevation in H2A immuno-expression was observed in the HIV+ compared to the HIV- group (p = 0.0008) and in the pre-eclampsia HIV- compared to the normotensive HIV- group (p = 0.0008). However, a significant decline in H2A immuno-expression was observed in the PEHIV+ group compared to the NHIV+ group (p = 0.0072). CONCLUSIONS Both PE and HIV elevate placental NETs; however, they synergistically downregulate NETs expression. Further investigations are required to interrogate the signaling pathways involved to establish potential NET-targeted therapeutic actions.
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Affiliation(s)
- Merantha Moodley
- Discipline of Optics and Imaging, Doris Duke Medical Research Institute, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
| | - Jagidesa Moodley
- Women's Health and HIV Research Group, Department of Obstetrics and Gynecology, University of KwaZulu-Natal, South Africa
| | - Thajasvarie Naicker
- Discipline of Optics and Imaging, Doris Duke Medical Research Institute, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa.
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Shaik Abdool F, Coetzer THT, Goldring JPD. Isolation of Nile crocodile (Crocodylus niloticus) serum immunoglobulin M and Y (IgM and IgY). J Immunol Methods 2019; 478:112724. [PMID: 31837304 DOI: 10.1016/j.jim.2019.112724] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 11/18/2019] [Accepted: 12/09/2019] [Indexed: 11/27/2022]
Abstract
Crocodile immunity has not been fully characterised with more studies on crocodile innate immunity than cell-mediated or humoral immunity. Crocodile immunoglobulin genes have been described but immunoglobulin proteins have not been isolated or studied biochemically. Two large proteins proposed to be crocodile IgM and IgY were isolated and purified from Crocodylus niloticus sera using two different protocols. A 50% (w/v) ammonium sulfate and a 15% (w/v) polyethylene glycol precipitation step was followed by Cibacron blue F3GA affinity- and Sephacryl-S300 gel filtration chromatography. An alternate purification protocol, with only two steps, involved thiophilic affinity- and Sephacryl-S300 gel filtration chromatography. The purified crocodile IgM resolved on reducing SDS-PAGE with an apparent mass of 180 kDa. Purified crocodile IgY resolved at 180 kDa alongside chicken IgY on a non-reducing SDS-PAGE gel, and is deduced to consist of two 66 kDa heavy and two 23 kDa light chains under reducing conditions. The thiophilic/gel filtration two-step protocol gave three-fold higher yields of isolated protein than the four-step precipitation/chromatography protocol. Antibodies against the isolated crocodile IgM and IgY were raised in chickens and affinity purified. The chicken antibodies differentiated between crocodile IgM and IgY and have the potential for use in the diagnosis of crocodile infections. The purified crocodile antibodies can be biochemically characterised and compared to mammalian and avian antibodies to give a better understanding of crocodile humoral immunity.
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Affiliation(s)
- Faiaz Shaik Abdool
- Biochemistry, School of Life Sciences, University of KwaZulu-Natal (Pietermaritzburg campus), Private Bag X01, Scottsville 3209, South Africa
| | - Theresa H T Coetzer
- Biochemistry, School of Life Sciences, University of KwaZulu-Natal (Pietermaritzburg campus), Private Bag X01, Scottsville 3209, South Africa
| | - J P Dean Goldring
- Biochemistry, School of Life Sciences, University of KwaZulu-Natal (Pietermaritzburg campus), Private Bag X01, Scottsville 3209, South Africa.
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20
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Driouich A, Smith C, Ropitaux M, Chambard M, Boulogne I, Bernard S, Follet-Gueye ML, Vicré M, Moore J. Root extracellular traps versus neutrophil extracellular traps in host defence, a case of functional convergence? Biol Rev Camb Philos Soc 2019; 94:1685-1700. [PMID: 31134732 DOI: 10.1111/brv.12522] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 04/24/2019] [Accepted: 04/30/2019] [Indexed: 12/20/2022]
Abstract
The root cap releases cells that produce massive amounts of mucilage containing polysaccharides, proteoglycans, extracellular DNA (exDNA) and a variety of antimicrobial compounds. The released cells - known as border cells or border-like cells - and mucilage secretions form networks that are defined as root extracellular traps (RETs). RETs are important players in root immunity. In animals, phagocytes are some of the most abundant white blood cells in circulation and are very important for immunity. These cells combat pathogens through multiple defence mechanisms, including the release of exDNA-containing extracellular traps (ETs). Traps of neutrophil origin are abbreviated herein as NETs. Similar to phagocytes, plant root cap-originating cells actively contribute to frontline defence against pathogens. RETs and NETs are thus components of the plant and animal immune systems, respectively, that exhibit similar compositional and functional properties. Herein, we describe and discuss the formation, molecular composition and functional similarities of these similar but different extracellular traps.
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Affiliation(s)
- Azeddine Driouich
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, EA4358, Normandie Université, Université de Rouen, 1 Rue Thomas Becket, 76000, Rouen, France.,Structure Fédérative de Recherche « Normandie-Végétal » - FED4277, 76000, Rouen, France
| | - Carine Smith
- Department of Physiological Sciences, Science Faculty, Stellenbosch University, Matieland, 7602, South Africa
| | - Marc Ropitaux
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, EA4358, Normandie Université, Université de Rouen, 1 Rue Thomas Becket, 76000, Rouen, France.,Structure Fédérative de Recherche « Normandie-Végétal » - FED4277, 76000, Rouen, France
| | - Marie Chambard
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, EA4358, Normandie Université, Université de Rouen, 1 Rue Thomas Becket, 76000, Rouen, France.,Structure Fédérative de Recherche « Normandie-Végétal » - FED4277, 76000, Rouen, France
| | - Isabelle Boulogne
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, EA4358, Normandie Université, Université de Rouen, 1 Rue Thomas Becket, 76000, Rouen, France.,Structure Fédérative de Recherche « Normandie-Végétal » - FED4277, 76000, Rouen, France
| | - Sophie Bernard
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, EA4358, Normandie Université, Université de Rouen, 1 Rue Thomas Becket, 76000, Rouen, France.,Structure Fédérative de Recherche « Normandie-Végétal » - FED4277, 76000, Rouen, France
| | - Marie-Laure Follet-Gueye
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, EA4358, Normandie Université, Université de Rouen, 1 Rue Thomas Becket, 76000, Rouen, France.,Structure Fédérative de Recherche « Normandie-Végétal » - FED4277, 76000, Rouen, France
| | - Maïté Vicré
- Laboratoire de Glycobiologie et Matrice Extracellulaire Végétale, EA4358, Normandie Université, Université de Rouen, 1 Rue Thomas Becket, 76000, Rouen, France.,Structure Fédérative de Recherche « Normandie-Végétal » - FED4277, 76000, Rouen, France
| | - John Moore
- Institute for Wine Biotechnology, Department of Viticulture and Oenology, Faculty of AgriSciences, Stellenbosch University, Matieland, 7602, South Africa
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Ahmad Nizar NN, Sultana S, Hossain MM, Johan MR, Ali ME. Double gene targeting multiplex PCR-RFLP detects Crocodylus porosus in chicken meatball and traditional medicine. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2018. [DOI: 10.1080/10942912.2018.1508164] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Nina Naquiah Ahmad Nizar
- Nanotechnology and Catalysis Research Centre, Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur, Malaysia
| | - Sharmin Sultana
- Nanotechnology and Catalysis Research Centre, Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur, Malaysia
| | - M.A. Motalib Hossain
- Nanotechnology and Catalysis Research Centre, Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur, Malaysia
| | - Mohd Rafie Johan
- Nanotechnology and Catalysis Research Centre, Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur, Malaysia
| | - Md. Eaqub Ali
- Nanotechnology and Catalysis Research Centre, Institute of Postgraduate Studies, University of Malaya, Kuala Lumpur, Malaysia
- Centre for Research in Biotechnology for Agriculture (CEBAR), University of Malaya, Kuala Lumpur, Malaysia
- University of Malaya Halal Research Centre (UMHRC), University of Malaya, Kuala Lumpur, Malaysia
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Ahmad Nizar NN, Ali ME, Hossain MAM, Sultana S, Ahamad MNU. Double gene targeting PCR assay for the detection of Crocodylus porosus in commercial products. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2018; 35:1038-1051. [PMID: 29447579 DOI: 10.1080/19440049.2018.1440644] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The demand for crocodile meat is quickly growing because of its exotic and organoleptic appeal and also the low content of cholesterol and lipids. Moreover, crocodile oil and blood have been used in alternative medicines for treating asthma and several other ailments since ancient times. Furthermore, crocodile hides have great demand in leather industries. All of these have collectively contributed to the extensive hunting, illegal trading and consequent decline of crocodiles in most parts of the world. To keep space with the growing demands, some crocodile species such as Crocodylus porosus have been raised in farms and its commercial trades have been legalised. However, demand for wild crocodiles in foods and medicines has continued in high gear. Recently, several DNA-based methods have been proposed for crocodile detection, but those assays are based on single gene and longer-sized amplicon targets that break down during extensive processing. To address this gap, here we developed and validated a highly stable double gene targeted multiplex PCR assay for the identification of C. porosus materials in commercial products. The assay involved two short sites from C. porosus atp6 (77 bp) and cytb (127 bp) genes and a universal internal control (99 bp) for eukaryotes. The PCR primers were cross-tested against 18 species and validated under pure and mixed matrices under extensive boiling, autoclaving and microwave cooking conditions. Finally, it was used to identify five crocodile-based commercial products. The lower limits of detection for atp6 and cytb genes were 0.001 ng and 0.01 ng DNA, respectively, in pure meat and 1% under mixed matrices. Some inherent features, such as 77-127 bp amplicon sizes, exceptional stability and superior sensitivity, suggested the assay could be used for the identification of C. porosus in any forensic specimen.
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Affiliation(s)
- Nina Naquiah Ahmad Nizar
- a Nanotechnology and Catalysis Research Centre (NANOCAT) , University of Malaya , Kuala Lumpur , Malaysia
| | - Md Eaqub Ali
- a Nanotechnology and Catalysis Research Centre (NANOCAT) , University of Malaya , Kuala Lumpur , Malaysia.,b Centre for Research in Biotechnology for Agriculture (CEBAR) , University of Malaya , Kuala Lumpur , Malaysia.,c Institute of Halal Research (IHRUM) , University of Malaya , Kuala Lumpur , Malaysia
| | - M A Motalib Hossain
- a Nanotechnology and Catalysis Research Centre (NANOCAT) , University of Malaya , Kuala Lumpur , Malaysia
| | - Sharmin Sultana
- a Nanotechnology and Catalysis Research Centre (NANOCAT) , University of Malaya , Kuala Lumpur , Malaysia
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Schönrich G, Raftery MJ. Neutrophil Extracellular Traps Go Viral. Front Immunol 2016; 7:366. [PMID: 27698656 PMCID: PMC5027205 DOI: 10.3389/fimmu.2016.00366] [Citation(s) in RCA: 182] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 09/05/2016] [Indexed: 12/14/2022] Open
Abstract
Neutrophils are the most numerous immune cells. Their importance as the first line of defense against bacterial and fungal pathogens is well described. In contrast, the role of neutrophils in controlling viral infections is less clear. Bacterial and fungal pathogens can stimulate neutrophils extracellular traps (NETs) in a process called NETosis. Although NETosis has previously been described as a special form of programmed cell death, there are forms of NET production that do not end with the demise of neutrophils. As an end result of NETosis, genomic DNA complexed with microbicidal proteins is expelled from neutrophils. These structures can kill pathogens or at least prevent their local spread within host tissue. On the other hand, disproportionate NET formation can cause local or systemic damage. Only recently, it was recognized that viruses can also induce NETosis. In this review, we discuss the mechanisms by which NETs are produced in the context of viral infection and how this may contribute to both antiviral immunity and immunopathology. Finally, we shed light on viral immune evasion mechanisms targeting NETs.
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Affiliation(s)
- Günther Schönrich
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité - Universitätsmedizin Berlin , Berlin , Germany
| | - Martin J Raftery
- Institute of Medical Virology, Helmut-Ruska-Haus, Charité - Universitätsmedizin Berlin , Berlin , Germany
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