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Zhang Y, Xu L, Tao Q, Liu Z, Wen J, Xu T, Lai S, Ai Y, Xu Z, Zhu L. The immunity protection of intestine induced by pseudorabies virus del gI/gE/TK in piglets. Front Microbiol 2024; 14:1295524. [PMID: 38249453 PMCID: PMC10796999 DOI: 10.3389/fmicb.2023.1295524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 12/13/2023] [Indexed: 01/23/2024] Open
Abstract
Compared to the classical strain of Pseudorabies virus (PRV), the PRV variant exhibits stronger transmissibility and pathogenicity, causing immense disasters for the global pig industry. Based on this variant, our laboratory has preliminarily constructed a modified pseudorabies virus with deletions in the gE/gI/TK genes. In this study, the protective efficacy of PRV XJ del gI/gE/TK against piglet intestinal damage was evaluated. The results demonstrated that piglets immunized with PRV XJ del gI/gE/TK exhibited alleviated intestinal damage caused by the PRV XJ variant strain. This included reduced viral load, suppressed inflammation, and maintenance of intestinal structure and function. Additionally, PRV XJ del gI/gE/TK also strongly activated the innate immune response in the intestines, increasing the expression of antiviral factor mRNA and the secretion of SIgA to counteract the attack of the PRV XJ variant strain. Our study indicates that PRV XJ del gI/gE/TK can inhibit intestinal damage caused by PRV XJ variant strain and activate the innate immune response in the intestines.
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Affiliation(s)
- Yang Zhang
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Lei Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Qian Tao
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Zheyan Liu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Jianhua Wen
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Tong Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Siyuan Lai
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Yanru Ai
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Zhiwen Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
| | - Ling Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, China
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2
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Li Y, Chen Q, Wang L, Chen X, Wang B, Zhong W. The mechanisms of nerve injury caused by viral infection in the occurrence of gastrointestinal motility disorder-related diseases. Virol J 2023; 20:251. [PMID: 37915051 PMCID: PMC10621196 DOI: 10.1186/s12985-023-02185-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 09/14/2023] [Indexed: 11/03/2023] Open
Abstract
Gastrointestinal motility refers to the peristalsis and contractility of gastrointestinal muscles, including the force and frequency of gastrointestinal muscle contraction. Gastrointestinal motility maintains the normal digestive function of the human body and is a critical component of the physiological function of the digestive tract. At present, gastrointestinal motility disorder-related diseases are gradually affecting human production and life. In recent years, it has been consistently reported that the enteric nervous system has a coordinating and controlling role in gastrointestinal motility. Motility disorders are closely related to functional or anatomical changes in the gastrointestinal nervous system. At the same time, some viral infections, such as herpes simplex virus and varicella-zoster virus infections, can cause damage to the gastrointestinal nervous system. Therefore, this paper describes the mechanisms of viral infection in the gastrointestinal nervous system and the associated clinical manifestations. Studies have indicated that the means by which viruses can cause the infection of the enteric nervous system are various, including retrograde transport, hematogenous transmission and centrifugal transmission from the central nervous system. When viruses infect the enteric nervous system, they can cause clinical symptoms, such as abdominal pain, abdominal distension, early satiation, belching, diarrhea, and constipation, by recruiting macrophages, lymphocytes and neutrophils and regulating intestinal microbes. The findings of several case‒control studies suggest that viruses are the cause of some gastrointestinal motility disorders. It is concluded that one of the causes of gastrointestinal motility disorders is viral infection of the enteric nervous system. In such disorders, the relationships between viruses and nerves remain to be studied more deeply. Further studies are necessary to evaluate whether prophylactic antiviral therapy is feasible in gastrointestinal motility disorders.
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Affiliation(s)
- Yaqian Li
- Department of Gastroenterology and Hepatology, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Qiuyu Chen
- Department of Gastroenterology and Hepatology, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Department of Gastroenterology, Tianjin First Central Hospital, Tianjin, 300110, China
| | - Liwei Wang
- Department of Gastroenterology and Hepatology, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Xin Chen
- Department of Gastroenterology and Hepatology, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, 300052, China.
| | - Bangmao Wang
- Department of Gastroenterology and Hepatology, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, 300052, China.
| | - Weilong Zhong
- Department of Gastroenterology and Hepatology, Tianjin Institute of Digestive Diseases, Tianjin Key Laboratory of Digestive Diseases, Tianjin Medical University General Hospital, Tianjin, 300052, China.
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3
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Lim YS, Lee AG, Jiang X, Scott JM, Cofie A, Kumar S, Kennedy D, Granville DJ, Shin H. NK cell-derived extracellular granzyme B drives epithelial ulceration during HSV-2 genital infection. Cell Rep 2023; 42:112410. [PMID: 37071533 DOI: 10.1016/j.celrep.2023.112410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 01/25/2023] [Accepted: 04/04/2023] [Indexed: 04/19/2023] Open
Abstract
Genital herpes is characterized by recurrent episodes of epithelial blistering. The mechanisms causing this pathology are ill defined. Using a mouse model of vaginal herpes simplex virus 2 (HSV-2) infection, we show that interleukin-18 (IL-18) acts upon natural killer (NK) cells to promote accumulation of the serine protease granzyme B in the vagina, coinciding with vaginal epithelial ulceration. Genetic loss of granzyme B or therapeutic inhibition by a specific protease inhibitor reduces disease and restores epithelial integrity without altering viral control. Distinct effects of granzyme B and perforin deficiency on pathology indicates that granzyme B acts independent of its classic cytotoxic role. IL-18 and granzyme B are markedly elevated in human herpetic ulcers compared with non-herpetic ulcers, suggesting engagement of these pathways in HSV-infected patients. Our study reveals a role for granzyme B in destructing mucosal epithelium during HSV-2 infection, identifying a therapeutic target to augment treatment of genital herpes.
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Affiliation(s)
- Ying Shiang Lim
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Aisha G Lee
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Xiaoping Jiang
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jason M Scott
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Adjoa Cofie
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Sandeep Kumar
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Dania Kennedy
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - David J Granville
- International Collaboration on Repair Discoveries Centre, Vancouver Coastal Health Research Institute, Vancouver, BC V5Z 1M9, Canada; Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC V6T 1Z7, Canada; BC Professional Firefighters' Burn and Wound Healing Research Laboratory, Vancouver, BC V5V 3P1, Canada
| | - Haina Shin
- Division of Infectious Disease, Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
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4
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The Potential Role of Microorganisms on Enteric Nervous System Development and Disease. Biomolecules 2023; 13:biom13030447. [PMID: 36979382 PMCID: PMC10046024 DOI: 10.3390/biom13030447] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/14/2023] [Accepted: 02/25/2023] [Indexed: 03/06/2023] Open
Abstract
The enteric nervous system (ENS), the inherent nervous system of the gastrointestinal (GI) tract is a vast nervous system that controls key GI functions, including motility. It functions at a critical interface between the gut luminal contents, including the diverse population of microorganisms deemed the microbiota, as well as the autonomic and central nervous systems. Critical development of this axis of interaction, a key determinant of human health and disease, appears to occur most significantly during early life and childhood, from the pre-natal through to the post-natal period. These factors that enable the ENS to function as a master regulator also make it vulnerable to damage and, in turn, a number of GI motility disorders. Increasing attention is now being paid to the potential of disruption of the microbiota and pathogenic microorganisms in the potential aetiopathogeneis of GI motility disorders in children. This article explores the evidence regarding the relationship between the development and integrity of the ENS and the potential for such factors, notably dysbiosis and pathogenic bacteria, viruses and parasites, to impact upon them in early life.
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Furuzawa‐Carballeda J, Icaza‐Chávez ME, Aguilar‐León D, Uribe‐Uribe N, Nuñez‐Pompa MC, Trigos‐Díaz A, Areán‐Sanz R, Fernández‐Camargo DA, Coss‐Adame E, Valdovinos MA, Briceño‐Souza E, Chi‐Cervera LA, Olivares‐Flores M, Torres‐Villalobos G. Is the Sars-CoV-2 virus a possible trigger agent for the development of achalasia? Neurogastroenterol Motil 2022; 35:e14502. [PMID: 36458526 PMCID: PMC9878267 DOI: 10.1111/nmo.14502] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/25/2022] [Accepted: 11/09/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUND Achalasia is an autoimmune disease whose probable causal agent is a neurotropic virus that chronically infects the myenteric plexus of the esophagus and induces the disease in a genetically susceptible host. The association between achalasia and coronaviruses has not been reported. AIMS To evaluate the presence of the SARS-CoV-2 virus, the ACE2 expression, the tissue architecture, and immune response in the lower esophageal sphincter muscle (LESm) of achalasia patients who posteriorly had SARS-CoV-2 (achalasia-COVID-19) infection before laparoscopic Heller myotomy (LHM) and compare the findings with type II achalasia patients and transplant donors (controls) without COVID-19. METHODS The LESm of 7 achalasia-COVID-19 patients (diagnosed by PCR), ten achalasia patients, and ten controls without COVID-19 were included. The presence of the virus was evaluated by in situ PCR and immunohistochemistry. ACE2 receptor expression and effector CD4 T cell and regulatory subsets were determined by immunohistochemistry. KEY RESULTS Coronavirus was detected in 6/7 patients-COVID-19. The SARS-CoV-2 was undetectable in the LESm of the achalasia patients and controls. ACE2 receptor was expressed in all the patients and controls. One patient developed achalasia type II post-COVID-19. The percentage of Th22/Th17/Th1/pDCreg was higher in achalasia and achalasia-COVID-19 pre-HLM vs. controls. The Th2/Treg/Breg cell percentages were higher only in achalasia vs. controls. CONCLUSION & INFERENCES SARS-CoV2 and its receptor expression in the LESm of achalasia patients who posteriorly had COVID-19 but not in the controls suggests that it could affect the myenteric plexus. Unlike achalasia, patients-COVID-19 have an imbalance between effector CD4 T cells and the regulatory mechanisms.
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Affiliation(s)
- Janette Furuzawa‐Carballeda
- Department of Immunology and RheumatologyInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | | | - Diana Aguilar‐León
- Department of PathologhyInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | - Norma Uribe‐Uribe
- Department of PathologhyInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | - María C. Nuñez‐Pompa
- Department of Immunology and RheumatologyInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | - Alonso Trigos‐Díaz
- Departments of Experimental Surgery and SurgeryInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | - Rodrigo Areán‐Sanz
- Departments of Experimental Surgery and SurgeryInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | - Dheni A. Fernández‐Camargo
- PECEM (MD/PhD program), Facultad de MedicinaUniversidad Nacional Autónoma de MéxicoMexico CityMexico,Department of Nephrology and Mineral MetabolismInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | - Enrique Coss‐Adame
- Department of GastroenterologyInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | - Miguel A. Valdovinos
- Department of GastroenterologyInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | - Eduardo Briceño‐Souza
- Department of Immunology and RheumatologyInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | | | - Miriam Olivares‐Flores
- Department of PathologhyInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
| | - Gonzalo Torres‐Villalobos
- Departments of Experimental Surgery and SurgeryInstituto Nacional de Ciencias Médicas y Nutrición Salvador ZubiránCiudad de MexicoMexico
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Hu H, Fu M, Li C, Zhang B, Li Y, Hu Q, Zhang M. Herpes simplex virus type 2 inhibits TNF-α-induced NF-κB activation through viral protein ICP22-mediated interaction with p65. Front Immunol 2022; 13:983502. [PMID: 36211339 PMCID: PMC9538160 DOI: 10.3389/fimmu.2022.983502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/06/2022] [Indexed: 11/13/2022] Open
Abstract
Herpes simplex virus type 2 (HSV-2) is a prevalent human pathogen and the main cause of genital herpes. After initial infection, HSV-2 can establish lifelong latency within dorsal root ganglia by evading the innate immunity of the host. NF-κB has a crucial role in regulating cell proliferation, inflammation, apoptosis, and immune responses. It is known that inhibition of NF-κB activation by a virus could facilitate it to establish infection in the host. In the current study, we found that HSV-2 inhibited TNF-α-induced activation of NF-κB-responsive promoter in a dose-dependent manner, while UV-inactivated HSV-2 did not have such capability. We further identified the immediate early protein ICP22 of HSV-2 as a vital viral element in inhibiting the activation of NF-κB-responsive promoter. The role of ICP22 was confirmed in human cervical cell line HeLa and primary cervical fibroblasts in the context of HSV-2 infection, showing that ICP22 deficient HSV-2 largely lost the capability in suppressing NF-κB activation. HSV-2 ICP22 was further shown to suppress the activity of TNF receptor-associated factor 2 (TRAF2)-, IκB kinase α (IKK α)-, IKK β-, IKK γ-, or p65-induced activation of NF-κB-responsive promoter. Mechanistically, HSV-2 ICP22 inhibited the phosphorylation and nuclear translocation of p65 by directly interacting with p65, resulting in the blockade of NF-κB activation. Furthermore, ICP22 from several alpha-herpesviruses could also inhibit NF-κB activation, suggesting the significance of ICP22 in herpesvirus immune evasion. Findings in this study highlight the importance of ICP22 in inhibiting NF-κB activation, revealing a novel mechanism by which HSV-2 evades the host antiviral responses.
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Affiliation(s)
- Huimin Hu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Ming Fu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- Department of Gastroenterology, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Chuntian Li
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Binman Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Yuncheng Li
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Qinxue Hu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- Institute for Infection and Immunity, St George’s, University of London, London, United Kingdom
- *Correspondence: Mudan Zhang, ; Qinxue Hu,
| | - Mudan Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- *Correspondence: Mudan Zhang, ; Qinxue Hu,
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7
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Role of Caspases and Gasdermin A during HSV-1 Infection in Mice. Viruses 2022; 14:v14092034. [PMID: 36146839 PMCID: PMC9504851 DOI: 10.3390/v14092034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/06/2022] [Accepted: 09/12/2022] [Indexed: 11/16/2022] Open
Abstract
Herpes simplex virus type 1 (HSV-1) infection can manifest locally as mucocutaneous lesions or keratitis and can also spread to the central nervous system to cause encephalitis. HSV-1 establishes a lifelong latent infection and neither cure nor vaccine is currently available. The innate immune response is the first line of defense against infection. Caspases and gasdermins are important components of innate immunity. Caspases are a family of cysteine proteases, most of which mediate regulated cell death. Gasdermins are a family of pore-forming proteins that trigger lytic cell death. To determine whether caspases or gasdermins contribute to innate immune defenses against HSV-1, we screened mice deficient in specific cell death genes. Our results indicate a modest role for caspase-6 in defense against HSV-1. Further, Asc–/–Casp1/11–/– mice also had a modest increased susceptibility to HSV-1 infection. Caspase-7, -8, and -14 did not have a notable role in controlling HSV-1 infection. We generated Gsdma1-Gsdma2-Gsdma3 triple knockout mice, which also had normal susceptibility to HSV-1. We confirmed that the previously published importance of RIPK3 during systemic HSV-1 infection also holds true during skin infection. Overall, our data highlight that as a successful pathogen, HSV-1 has multiple ways to evade host innate immune responses.
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8
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Kirschen GW, Panda S, Burd I. Congenital Infection Influence on Early Brain Development Through the Gut-Brain Axis. Front Neurosci 2022; 16:894955. [PMID: 35844234 PMCID: PMC9280077 DOI: 10.3389/fnins.2022.894955] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 05/23/2022] [Indexed: 11/21/2022] Open
Abstract
The mechanisms by which various pathogens cause congenital infections have been studied extensively, aiding in the understanding of the detrimental effects these infections can have on fetal/neonatal neurological development. Recent studies have focused on the gut-brain axis as pivotal in neurodevelopment, with congenital infections causing substantial disruptions. There remains controversy surrounding the purported sterility of the placenta as well as concerns regarding the effects of exposure to antibiotics used during pregnancy on neonatal microbiome development and how early exposure to microbes or antibiotics can shape the gut-brain axis. Long-term neurodevelopmental consequences, such as autism spectrum disorder, attention deficit hyperactivity disorder, and cerebral palsy, may be attributable, in part, to early life infection and changes in the immature gut microbiome. The goal of this review is thus to critically evaluate the current evidence related to early life infection affecting neurodevelopment through the gut-brain axis.
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Affiliation(s)
- Gregory W. Kirschen
- Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, Baltimore, MD, United States
- Integrated Center for Fetal Medicine, The Johns Hopkins Hospital, Baltimore, MD, United States
| | - Snigdha Panda
- Department of Biology, Johns Hopkins University, Baltimore, MD, United States
| | - Irina Burd
- Department of Gynecology and Obstetrics, The Johns Hopkins Hospital, Baltimore, MD, United States
- Integrated Center for Fetal Medicine, The Johns Hopkins Hospital, Baltimore, MD, United States
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Gastric herpes simplex virus type 1 infection is associated with functional gastrointestinal disorders in the presence and absence of comorbid fibromyalgia: a pilot case-control study. Infection 2022; 50:1303-1311. [PMID: 35445970 PMCID: PMC9522778 DOI: 10.1007/s15010-022-01823-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/31/2022] [Indexed: 12/12/2022]
Abstract
PURPOSE Animal studies have linked gastric herpesvirus infections to symptoms associated with functional gastrointestinal disorders (FGIDs). Herpesviruses have also been hypothesized to contribute to fibromyalgia (FM), a chronic pain syndrome frequently comorbid with FGIDs. The purpose of this study was to compare the prevalence of gastric herpesvirus infection in patients with FGIDs, with and without comorbid FM, to that of controls. METHODS For this pilot case-control study, we enrolled 30 patients who met both the Rome IV diagnostic criteria for one or more FGIDs and the American College of Rheumatology 2010 criteria for FM, 15 patients with one or more FGIDs without comorbid FM, and 15 control patients. Following endoscopic examination, gastric biopsies were analyzed for herpesvirus DNA and protein, Helicobacter pylori infection, and histological evidence of gastritis. Importantly, the viral nonstructural protein ICP8 was used as a marker to differentiate cell-associated actively replicating virus from latent infection and/or free virus passing through the GI tract. RESULTS Gastric herpes simplex virus type 1 (HSV-1) infection, as indicated by ICP8 presence, was significantly associated with FGIDs in the presence (OR 70.00, 95% CI 7.42-660.50; P < .001) and absence (OR 38.50, 95% CI 3.75-395.40; P < .001) of comorbid FM. Neither histological gastritis nor H. pylori infection were found to be associated with FGIDs or FM. CONCLUSIONS HSV-1 infection was identified in gastric mucosal biopsies from patients with diverse FGIDs, with and without comorbid FM. Larger, multi-center studies investigating the prevalence of this association are warranted.
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10
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Arostegui D, Castro K, Schwarz S, Vaidy K, Rabinowitz S, Wallach T. Persistent SARS-CoV-2 Nucleocapsid Protein Presence in the Intestinal Epithelium of a Pediatric Patient 3 Months After Acute Infection. JPGN REPORTS 2022; 3:e152. [PMID: 37168753 PMCID: PMC10158423 DOI: 10.1097/pg9.0000000000000152] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 11/01/2021] [Indexed: 05/13/2023]
Abstract
In addition to the severe impact of acute respiratory disease during the SARS-CoV-2 pandemic, the issue of "Long COVID" illness has impacted large numbers of patients following the initial infection. Wide ranges of Long Covid incidence have been reported, ranging from 30 to 87%. Long COVID has a variety of clinical manifestations, including gastrointestinal symptoms. Here, we report a case of persistent abdominal pain, 3 months following a SARS-CoV-2 diagnosis, associated with chronic colonic inflammation and the presence of mucosal SARS-CoV-2 virions.
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Affiliation(s)
- Dalia Arostegui
- From the SUNY Downstate Health Sciences University, Brooklyn, NY
| | - Kenny Castro
- From the SUNY Downstate Health Sciences University, Brooklyn, NY
| | - Steven Schwarz
- From the SUNY Downstate Health Sciences University, Brooklyn, NY
| | - Katherine Vaidy
- From the SUNY Downstate Health Sciences University, Brooklyn, NY
| | - Simon Rabinowitz
- From the SUNY Downstate Health Sciences University, Brooklyn, NY
| | - Thomas Wallach
- From the SUNY Downstate Health Sciences University, Brooklyn, NY
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11
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Lebratti T, Lim YS, Cofie A, Andhey P, Jiang X, Scott J, Fabbrizi MR, Ozantürk AN, Pham C, Clemens R, Artyomov M, Dinauer M, Shin H. A sustained type I IFN-neutrophil-IL-18 axis drives pathology during mucosal viral infection. eLife 2021; 10:e65762. [PMID: 34047696 PMCID: PMC8163503 DOI: 10.7554/elife.65762] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/21/2021] [Indexed: 12/14/2022] Open
Abstract
Neutrophil responses against pathogens must be balanced between protection and immunopathology. Factors that determine these outcomes are not well-understood. In a mouse model of genital herpes simplex virus-2 (HSV-2) infection, which results in severe genital inflammation, antibody-mediated neutrophil depletion reduced disease. Comparative single-cell RNA-sequencing analysis of vaginal cells against a model of genital HSV-1 infection, which results in mild inflammation, demonstrated sustained expression of interferon-stimulated genes (ISGs) only after HSV-2 infection primarily within the neutrophil population. Both therapeutic blockade of IFNα/β receptor 1 (IFNAR1) and genetic deletion of IFNAR1 in neutrophils concomitantly decreased HSV-2 genital disease severity and vaginal IL-18 levels. Therapeutic neutralization of IL-18 also diminished genital inflammation, indicating an important role for this cytokine in promoting neutrophil-dependent immunopathology. Our study reveals that sustained type I interferon (IFN) signaling is a driver of pathogenic neutrophil responses and identifies IL-18 as a novel component of disease during genital HSV-2 infection.
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MESH Headings
- Animals
- Antibodies/pharmacology
- Chlorocebus aethiops
- Disease Models, Animal
- Female
- Herpes Genitalis/immunology
- Herpes Genitalis/metabolism
- Herpes Genitalis/prevention & control
- Herpes Genitalis/virology
- Herpesvirus 1, Human/immunology
- Herpesvirus 1, Human/pathogenicity
- Herpesvirus 2, Human/immunology
- Herpesvirus 2, Human/pathogenicity
- Host-Pathogen Interactions
- Immunity, Mucosal/drug effects
- Interferon Type I/metabolism
- Interleukin-18/metabolism
- Mice, Inbred C57BL
- Mice, Transgenic
- Mucous Membrane/drug effects
- Mucous Membrane/innervation
- Mucous Membrane/metabolism
- Mucous Membrane/virology
- Neutrophil Activation/drug effects
- Neutrophils/drug effects
- Neutrophils/immunology
- Neutrophils/metabolism
- Neutrophils/virology
- Receptor, Interferon alpha-beta/antagonists & inhibitors
- Receptor, Interferon alpha-beta/metabolism
- Signal Transduction
- Vagina/drug effects
- Vagina/immunology
- Vagina/metabolism
- Vagina/virology
- Vero Cells
- Mice
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Affiliation(s)
- Tania Lebratti
- Department of Medicine/Division of Infectious Diseases, Washington University School of MedicineSt LouisUnited States
| | - Ying Shiang Lim
- Department of Medicine/Division of Infectious Diseases, Washington University School of MedicineSt LouisUnited States
| | - Adjoa Cofie
- Department of Medicine/Division of Infectious Diseases, Washington University School of MedicineSt LouisUnited States
| | - Prabhakar Andhey
- Department of Pathology and Immunology, Washington University School of MedicineSt LouisUnited States
| | - Xiaoping Jiang
- Department of Medicine/Division of Infectious Diseases, Washington University School of MedicineSt LouisUnited States
| | - Jason Scott
- Department of Medicine/Division of Infectious Diseases, Washington University School of MedicineSt LouisUnited States
| | - Maria Rita Fabbrizi
- Department of Medicine/Division of Infectious Diseases, Washington University School of MedicineSt LouisUnited States
| | - Ayşe Naz Ozantürk
- Department of Medicine/Division of Infectious Diseases, Washington University School of MedicineSt LouisUnited States
| | - Christine Pham
- Department of Medicine/Division of Rheumatology, Washington University School of MedicineSt LouisUnited States
| | - Regina Clemens
- Department of Pediatrics/Division of Critical Care Medicine, Washington University School of MedicineSt LouisUnited States
| | - Maxim Artyomov
- Department of Pathology and Immunology, Washington University School of MedicineSt LouisUnited States
| | - Mary Dinauer
- Department of Pediatrics/Hematology and Oncology, Washington University School of MedicineSt LouisUnited States
| | - Haina Shin
- Department of Medicine/Division of Infectious Diseases, Washington University School of MedicineSt LouisUnited States
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12
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Holland AM, Bon-Frauches AC, Keszthelyi D, Melotte V, Boesmans W. The enteric nervous system in gastrointestinal disease etiology. Cell Mol Life Sci 2021; 78:4713-4733. [PMID: 33770200 PMCID: PMC8195951 DOI: 10.1007/s00018-021-03812-y] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/20/2021] [Accepted: 03/10/2021] [Indexed: 02/06/2023]
Abstract
A highly conserved but convoluted network of neurons and glial cells, the enteric nervous system (ENS), is positioned along the wall of the gut to coordinate digestive processes and gastrointestinal homeostasis. Because ENS components are in charge of the autonomous regulation of gut function, it is inevitable that their dysfunction is central to the pathophysiology and symptom generation of gastrointestinal disease. While for neurodevelopmental disorders such as Hirschsprung, ENS pathogenesis appears to be clear-cut, the role for impaired ENS activity in the etiology of other gastrointestinal disorders is less established and is often deemed secondary to other insults like intestinal inflammation. However, mounting experimental evidence in recent years indicates that gastrointestinal homeostasis hinges on multifaceted connections between the ENS, and other cellular networks such as the intestinal epithelium, the immune system, and the intestinal microbiome. Derangement of these interactions could underlie gastrointestinal disease onset and elicit variable degrees of abnormal gut function, pinpointing, perhaps unexpectedly, the ENS as a diligent participant in idiopathic but also in inflammatory and cancerous diseases of the gut. In this review, we discuss the latest evidence on the role of the ENS in the pathogenesis of enteric neuropathies, disorders of gut-brain interaction, inflammatory bowel diseases, and colorectal cancer.
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Affiliation(s)
- Amy Marie Holland
- Department of Pathology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
- Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium
| | - Ana Carina Bon-Frauches
- Department of Pathology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Daniel Keszthelyi
- Department of Internal Medicine, Division of Gastroenterology-Hepatology, NUTRIM-School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Veerle Melotte
- Department of Pathology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
- Department of Clinical Genetics, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Werend Boesmans
- Department of Pathology, GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands.
- Biomedical Research Institute (BIOMED), Hasselt University, Diepenbeek, Belgium.
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13
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Colón-Thillet R, Jerome KR, Stone D. Optimization of AAV vectors to target persistent viral reservoirs. Virol J 2021; 18:85. [PMID: 33892762 PMCID: PMC8067653 DOI: 10.1186/s12985-021-01555-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 04/14/2021] [Indexed: 12/18/2022] Open
Abstract
Gene delivery of antiviral therapeutics to anatomical sites where viruses accumulate and persist is a promising approach for the next generation of antiviral therapies. Recombinant adeno-associated viruses (AAV) are one of the leading vectors for gene therapy applications that deliver gene-editing enzymes, antibodies, and RNA interference molecules to eliminate viral reservoirs that fuel persistent infections. As long-lived viral DNA within specific cellular reservoirs is responsible for persistent hepatitis B virus, Herpes simplex virus, and human immunodeficiency virus infections, the discovery of AAV vectors with strong tropism for hepatocytes, sensory neurons and T cells, respectively, is of particular interest. Identification of natural isolates from various tissues in humans and non-human primates has generated an extensive catalog of AAV vectors with diverse tropisms and transduction efficiencies, which has been further expanded through molecular genetic approaches. The AAV capsid protein, which forms the virions' outer shell, is the primary determinant of tissue tropism, transduction efficiency, and immunogenicity. Thus, over the past few decades, extensive efforts to optimize AAV vectors for gene therapy applications have focused on capsid engineering with approaches such as directed evolution and rational design. These approaches are being used to identify variants with improved transduction efficiencies, alternate tropisms, reduced sequestration in non-target organs, and reduced immunogenicity, and have produced AAV capsids that are currently under evaluation in pre-clinical and clinical trials. This review will summarize the most recent strategies to identify AAV vectors with enhanced tropism and transduction in cell types that harbor viral reservoirs.
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Affiliation(s)
- Rossana Colón-Thillet
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, Seattle, WA, USA
| | - Keith R Jerome
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, Seattle, WA, USA
- Department of Laboratory Medicine, University of Washington, Seattle, WA, USA
| | - Daniel Stone
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, Seattle, WA, USA.
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14
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Zhdanova KA, Savelyeva IO, Ezhov AV, Zhdanov AP, Zhizhin KY, Mironov AF, Bragina NA, Babayants AA, Frolova IS, Filippova NI, Scliankina NN, Scheglovitova ON. Novel Cationic Meso-Arylporphyrins and Their Antiviral Activity against HSV-1. Pharmaceuticals (Basel) 2021; 14:ph14030242. [PMID: 33800457 PMCID: PMC7999199 DOI: 10.3390/ph14030242] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 02/28/2021] [Accepted: 03/03/2021] [Indexed: 02/07/2023] Open
Abstract
This work is devoted to the search for new antiherpes simplex virus type 1 (HSV-1) drugs among synthetic tetrapyrroles and to an investigation of their antiviral properties under nonphotodynamic conditions. In this study, novel amphiphilic 5,10,15,20-tetrakis(4-(3-pyridyl-n-propanoyl)oxyphenyl)porphyrin tetrabromide (3a), 5,10,15,20-tetrakis(4-(6-pyridyl-n-hexanoyl)oxyphenyl)porphyrin tetrabromide (3b) and known 5,10,15,20-tetrakis(1-methyl-4-pyridinio)porphyrin tetraiodide (TMePyP) were synthesized, and their dark antiviral activity in vitro against HSV-1 was studied. The influence of porphyrin’s nanosized delivery vehicles based on Pluronic F127 on anti-HSV-1 activity was estimated. All the received compounds 3a, 3b and TMePyP showed virucidal efficiency and had an effect on viral replication stages. The new compound 3b showed the highest antiviral activity, close to 100%, with the lowest concentration, while the maximum TMePyP activity was observed with a high concentration; porphyrin 3a was the least active. The inclusion of the synthesized compounds in Pluronic F-127 polymeric micelles had a noticeable effect on antiviral activity only at higher porphyrin concentrations. Action of the received compounds differs by influence on the early or later reproduction stages. While 3a and TMePyP acted on all stages of the viral replication cycle, porphyrin 3b inhibited viral replication during the early stages of infection. The resulting compounds are promising for the development of utilitarian antiviral agents and, possibly, medical antiviral drugs.
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Affiliation(s)
- Kseniya A. Zhdanova
- MIREA—Russian Technological University, Vernadsky Prospect 86, Moscow 119571, Russia; (I.O.S.); (A.V.E.); (K.Y.Z.); (A.F.M.); (N.A.B.)
- Correspondence: ; Tel.: +79-261-126-692
| | - Inga O. Savelyeva
- MIREA—Russian Technological University, Vernadsky Prospect 86, Moscow 119571, Russia; (I.O.S.); (A.V.E.); (K.Y.Z.); (A.F.M.); (N.A.B.)
| | - Artem V. Ezhov
- MIREA—Russian Technological University, Vernadsky Prospect 86, Moscow 119571, Russia; (I.O.S.); (A.V.E.); (K.Y.Z.); (A.F.M.); (N.A.B.)
| | - Andrey P. Zhdanov
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskii Pr. 31, Moscow 117907, Russia;
| | - Konstantin Yu. Zhizhin
- MIREA—Russian Technological University, Vernadsky Prospect 86, Moscow 119571, Russia; (I.O.S.); (A.V.E.); (K.Y.Z.); (A.F.M.); (N.A.B.)
- Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Leninskii Pr. 31, Moscow 117907, Russia;
| | - Andrey F. Mironov
- MIREA—Russian Technological University, Vernadsky Prospect 86, Moscow 119571, Russia; (I.O.S.); (A.V.E.); (K.Y.Z.); (A.F.M.); (N.A.B.)
| | - Natal’ya A. Bragina
- MIREA—Russian Technological University, Vernadsky Prospect 86, Moscow 119571, Russia; (I.O.S.); (A.V.E.); (K.Y.Z.); (A.F.M.); (N.A.B.)
| | - Alla A. Babayants
- Gamaleya Research Center of Epidemiology and Microbiology, Gamaleya Str. 18, Moscow 123098, Russia; (A.A.B.); (I.S.F.); (N.I.F.); (N.N.S.); (O.N.S.)
| | - Irina S. Frolova
- Gamaleya Research Center of Epidemiology and Microbiology, Gamaleya Str. 18, Moscow 123098, Russia; (A.A.B.); (I.S.F.); (N.I.F.); (N.N.S.); (O.N.S.)
| | - Nadezhda I. Filippova
- Gamaleya Research Center of Epidemiology and Microbiology, Gamaleya Str. 18, Moscow 123098, Russia; (A.A.B.); (I.S.F.); (N.I.F.); (N.N.S.); (O.N.S.)
| | - Nadezhda N. Scliankina
- Gamaleya Research Center of Epidemiology and Microbiology, Gamaleya Str. 18, Moscow 123098, Russia; (A.A.B.); (I.S.F.); (N.I.F.); (N.N.S.); (O.N.S.)
| | - Olga N. Scheglovitova
- Gamaleya Research Center of Epidemiology and Microbiology, Gamaleya Str. 18, Moscow 123098, Russia; (A.A.B.); (I.S.F.); (N.I.F.); (N.N.S.); (O.N.S.)
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15
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Marasco G, Lenti MV, Cremon C, Barbaro MR, Stanghellini V, Di Sabatino A, Barbara G. Implications of SARS-CoV-2 infection for neurogastroenterology. Neurogastroenterol Motil 2021; 33:e14104. [PMID: 33591607 PMCID: PMC7995160 DOI: 10.1111/nmo.14104] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 01/27/2021] [Accepted: 01/29/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Coronavirus disease 2019 (COVID-19) is associated with gastrointestinal and hepatic manifestation in up to one fifth of patients. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the etiologic agent of COVID-19, infects gastrointestinal epithelial cells expressing angiotensin-converting enzyme 2 (ACE2) receptors triggering a cascade of events leading to mucosal and systemic inflammation. Symptomatic patients display changes in gut microbiota composition and function which may contribute to intestinal barrier dysfunction and immune activation. Evidence suggests that SARS-CoV-2 infection and related mucosal inflammation impact on the function of the enteric nervous system and the activation of sensory fibers conveying information to the central nervous system, which, may at least in part, contribute symptom generation such as vomiting and diarrhea described in COVID-19. Liver and pancreas dysfunctions have also been described as non-respiratory complications of COVID-19 and add further emphasis to the common view of SARS-CoV-2 infection as a systemic disease with multiorgan involvement. PURPOSE The aim of this review was to highlight the current knowledge on the pathophysiology of gastrointestinal SARS-CoV-2 infection, including the crosstalk with the gut microbiota, the fecal-oral route of virus transmission, and the potential interaction of the virus with the enteric nervous system. We also review the current available data on gastrointestinal and liver manifestations, management, and outcomes of patients with COVID-19.
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Affiliation(s)
- Giovanni Marasco
- IRCCS Azienda Ospedaliero‐Universitaria di BolognaBolognaItaly
- Department of Medical and Surgical SciencesUniversity of BolognaItaly
| | - Marco Vincenzo Lenti
- First Department of Internal MedicineFondazione IRCCS Policlinico San MatteoUniversity of PaviaPaviaItaly
| | - Cesare Cremon
- IRCCS Azienda Ospedaliero‐Universitaria di BolognaBolognaItaly
| | | | - Vincenzo Stanghellini
- IRCCS Azienda Ospedaliero‐Universitaria di BolognaBolognaItaly
- Department of Medical and Surgical SciencesUniversity of BolognaItaly
| | - Antonio Di Sabatino
- First Department of Internal MedicineFondazione IRCCS Policlinico San MatteoUniversity of PaviaPaviaItaly
| | - Giovanni Barbara
- IRCCS Azienda Ospedaliero‐Universitaria di BolognaBolognaItaly
- Department of Medical and Surgical SciencesUniversity of BolognaItaly
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16
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McCall LI. Quo vadis? Central Rules of Pathogen and Disease Tropism. Front Cell Infect Microbiol 2021; 11:640987. [PMID: 33718287 PMCID: PMC7947345 DOI: 10.3389/fcimb.2021.640987] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 01/18/2021] [Indexed: 12/12/2022] Open
Abstract
Understanding why certain people get sick and die while others recover or never become ill is a fundamental question in biomedical research. A key determinant of this process is pathogen and disease tropism: the locations that become infected (pathogen tropism), and the locations that become damaged (disease tropism). Identifying the factors that regulate tropism is essential to understand disease processes, but also to drive the development of new interventions. This review intersects research from across infectious diseases to define the central mediators of disease and pathogen tropism. This review also highlights methods of study, and translational implications. Overall, tropism is a central but under-appreciated aspect of infection pathogenesis which should be at the forefront when considering the development of new methods of intervention.
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Affiliation(s)
- Laura-Isobel McCall
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, United States
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, United States
- Stephenson Cancer Center, University of Oklahoma, Oklahoma City, OK, United States
- Laboratories of Molecular Anthropology and Microbiome Research, University of Oklahoma, Norman, OK, United States
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17
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Giuffrè M, Moretti R, Campisciano G, da Silveira ABM, Monda VM, Comar M, Di Bella S, Antonello RM, Luzzati R, Crocè LS. You Talking to Me? Says the Enteric Nervous System (ENS) to the Microbe. How Intestinal Microbes Interact with the ENS. J Clin Med 2020; 9:E3705. [PMID: 33218203 PMCID: PMC7699249 DOI: 10.3390/jcm9113705] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/13/2020] [Accepted: 11/16/2020] [Indexed: 12/12/2022] Open
Abstract
Mammalian organisms form intimate interfaces with commensal and pathogenic gut microorganisms. Increasing evidence suggests a close interaction between gut microorganisms and the enteric nervous system (ENS), as the first interface to the central nervous system. Each microorganism can exert a different effect on the ENS, including phenotypical neuronal changes or the induction of chemical transmitters that interact with ENS neurons. Some pathogenic bacteria take advantage of the ENS to create a more suitable environment for their growth or to promote the effects of their toxins. In addition, some commensal bacteria can affect the central nervous system (CNS) by locally interacting with the ENS. From the current knowledge emerges an interesting field that may shape future concepts on the pathogen-host synergic interaction. The aim of this narrative review is to report the current findings regarding the inter-relationships between bacteria, viruses, and parasites and the ENS.
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Affiliation(s)
- Mauro Giuffrè
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy; (M.G.); (R.M); (R.M.A.); (R.L.); (L.S.C.)
- Italian Liver Foundation, 34129 Trieste, Italy
| | - Rita Moretti
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy; (M.G.); (R.M); (R.M.A.); (R.L.); (L.S.C.)
| | - Giuseppina Campisciano
- Department of Advanced Microbiology Diagnosis and Translational Research, Institute for Maternal and Child Health-IRCCS “Burlo Garofolo”, 34137 Trieste, Italy; (G.C.); (M.C.)
| | | | | | - Manola Comar
- Department of Advanced Microbiology Diagnosis and Translational Research, Institute for Maternal and Child Health-IRCCS “Burlo Garofolo”, 34137 Trieste, Italy; (G.C.); (M.C.)
| | - Stefano Di Bella
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy; (M.G.); (R.M); (R.M.A.); (R.L.); (L.S.C.)
| | - Roberta Maria Antonello
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy; (M.G.); (R.M); (R.M.A.); (R.L.); (L.S.C.)
| | - Roberto Luzzati
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy; (M.G.); (R.M); (R.M.A.); (R.L.); (L.S.C.)
| | - Lory Saveria Crocè
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy; (M.G.); (R.M); (R.M.A.); (R.L.); (L.S.C.)
- Italian Liver Foundation, 34129 Trieste, Italy
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18
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Kim DJ, Khoury-Hanold W, Jain PC, Klein J, Kong Y, Pope SD, Ge W, Medzhitov R, Iwasaki A. RUNX Binding Sites Are Enriched in Herpesvirus Genomes, and RUNX1 Overexpression Leads to Herpes Simplex Virus 1 Suppression. J Virol 2020; 94:e00943-20. [PMID: 32878886 PMCID: PMC7592204 DOI: 10.1128/jvi.00943-20] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 08/24/2020] [Indexed: 12/21/2022] Open
Abstract
Herpes simplex virus 1 (HSV-1) and HSV-2 can efficiently establish lifelong, transcriptionally silent latency states in sensory neurons to escape host detection. While host factors have previously been associated with long-range insulators in the viral genome, it is still unknown whether host transcription factors can repress viral genes more proximately to promote latency in dorsal root ganglion (DRG) neurons. Here, we assessed whether RUNX (runt-related transcription factor) transcription factors, which are critical in the development of sensory neurons, could be binding HSV-1 genome directly to suppress viral gene expression and lytic infection. Using previously published transcriptome sequencing data, we confirmed that mouse DRG neurons highly express Runx1 mRNA. Through computational analysis of HSV-1 and HSV-2 genomes, we observed that putative RUNX consensus binding sites (CBSs) were more enriched and more closely located to viral gene transcription start sites than would be expected by chance. We further found that RUNX CBSs were significantly more enriched among genomes of herpesviruses compared to those of nonherpesviruses. Utilizing an in vitro model of HSV-1 infection, we found that overexpressed RUNX1 could bind putative binding sites in the HSV-1 genome, repress numerous viral genes spanning all three kinetic classes, and suppress productive infection. In contrast, knockdown of RUNX1 in neuroblastoma cells induced viral gene expression and increased HSV-1 infection in vitro In sum, these data support a novel role for RUNX1 in directly binding herpesvirus genome, silencing the transcription of numerous viral genes, and ultimately limiting overall infection.IMPORTANCE Infecting 90% of the global population, HSV-1 and HSV-2 represent some of the most prevalent viruses in the world. Much of their success can be attributed to their ability to establish lifelong latent infections in the dorsal root ganglia (DRG). It is still largely unknown, however, how host transcription factors are involved in establishing this latency. Here, we report that RUNX1, expressed highly in DRG, binds HSV-1 genome, represses transcription of numerous viral genes, and suppresses productive in vitro infection. Our computational work further suggests this strategy may be used by other herpesviruses to reinforce latency in a cell-specific manner.
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Affiliation(s)
- Daniel J Kim
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - William Khoury-Hanold
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Priyanka Caroline Jain
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Jonathan Klein
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Yong Kong
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Scott D Pope
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - William Ge
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Ruslan Medzhitov
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
- Howard Hughes Medical Institute, Chevy Chase, Maryland, USA
| | - Akiko Iwasaki
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
- Howard Hughes Medical Institute, Chevy Chase, Maryland, USA
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19
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Unexpected High Prevalence of Lymphocytic Infiltrates in Myenteric Ganglions in Intestinal Inertia. Am J Surg Pathol 2020; 44:1137-1142. [PMID: 32271192 DOI: 10.1097/pas.0000000000001484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Intestinal inertia is a severe form of gut dysmotility that may require surgical resection. Loss of myenteric ganglion cells has been proposed as a possible etiology. Preclinical models have also suggested that virus infection-associated ganglionitis may be an alternative pathogenic factor. We determined to the extent intestinal inertia is associated with the lack of myenteric ganglion cells or ganglionitis using resection specimens from 27 intestinal inertia and 28 colon cancer patients. A hot spot approach with 5 HPFs was used for quantifying inflammatory cells. CD3, CD8, and CD20 immunohistochemistry was used to quantify T and B lymphocytes, along with subtyping the T-lymphocyte population by CD8. None of the intestinal inertia nor control cases showed the absence of myenteric ganglion cells. A total of 15 (55.6%) of the intestinal inertia cases showed inflammatory cell infiltration in the myenteric ganglion cells, compared with only 1 of 28 (3.6%) control cases (P<0.0001 by Fisher exact test). The inertia cases with inflammatory infiltrates were all associated predominantly with lymphocytes, including 3 cases (11.1%) with concurrent eosinophil infiltration, and 1 case (3.7%) with concurrent neutrophil infiltration. Furthermore, all 15 inertia cases with myenteric lymphocytic ganglionitis were associated with T lymphocytes (100%), including 1 case with a subset of concurrent B lymphocytes. The average CD3 count was 3.8 cells/HPF. CD8 immunohistochemical stain showed positive staining in 12 of the 15 cases (80%) with CD8-positive cells ranging from 1 to 8/HPF. In contrast, the only control case with lymphocytic ganglionitis showed mixed B and T lymphocytes and eosinophils. The high prevalence of T-lymphocyte infiltration in the myenteric ganglion in intestinal inertia cases suggests a possible pathogenic role.
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20
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Deffner F, Scharr M, Klingenstein S, Klingenstein M, Milazzo A, Scherer S, Wagner A, Hirt B, Mack AF, Neckel PH. Histological Evidence for the Enteric Nervous System and the Choroid Plexus as Alternative Routes of Neuroinvasion by SARS-CoV2. Front Neuroanat 2020; 14:596439. [PMID: 33122999 PMCID: PMC7573115 DOI: 10.3389/fnana.2020.596439] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 09/16/2020] [Indexed: 12/21/2022] Open
Abstract
Evidence is mounting that the novel corona virus SARS-CoV2 inflicts neurological symptoms in a subgroup of COVID-19 patients. While plenty of theories on the route of neuroinvasion have been proposed, little histological evidence has been presented supporting any of these hypotheses. Therefore, we carried out immunostainings for ACE2 and TMPRSS2, two proteinases crucial for the entry of SARS-CoV2 into host cells, in the human enteric nervous system (ENS), as well as in the choroid plexus of the lateral ventricles. Both of these sites are important, yet often neglected entry gates to the nervous system. We found that ACE2 and TMPRSS2 are expressed by enteric neurons and glial cells of the small and large intestine, as well as choroid plexus epithelial cells, indicating that these cells meet the molecular requirements for viral entry. Together, our results are fundamental histological evidence substantiating current theories of neuroinvasion by SARS-CoV2.
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Affiliation(s)
- Felix Deffner
- Institute of Clinical Anatomy and Cell Analysis, University of Tübingen, Tübingen, Germany
| | - Melanie Scharr
- Institute of Clinical Anatomy and Cell Analysis, University of Tübingen, Tübingen, Germany
| | - Stefanie Klingenstein
- Institute of Neuroanatomy and Developmental Biology, University of Tübingen, Tübingen, Germany
| | - Moritz Klingenstein
- Institute of Neuroanatomy and Developmental Biology, University of Tübingen, Tübingen, Germany
| | - Alfio Milazzo
- Institute of Neuroanatomy and Developmental Biology, University of Tübingen, Tübingen, Germany
| | - Simon Scherer
- Department of Pediatric Surgery, University Children’s Hospital, Tübingen, Germany
| | - Andreas Wagner
- Institute of Clinical Anatomy and Cell Analysis, University of Tübingen, Tübingen, Germany
| | - Bernhard Hirt
- Institute of Clinical Anatomy and Cell Analysis, University of Tübingen, Tübingen, Germany
| | - Andreas F. Mack
- Institute of Clinical Anatomy and Cell Analysis, University of Tübingen, Tübingen, Germany
| | - Peter H. Neckel
- Institute of Clinical Anatomy and Cell Analysis, University of Tübingen, Tübingen, Germany
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21
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Matheis F, Muller PA, Graves CL, Gabanyi I, Kerner ZJ, Costa-Borges D, Ahrends T, Rosenstiel P, Mucida D. Adrenergic Signaling in Muscularis Macrophages Limits Infection-Induced Neuronal Loss. Cell 2020; 180:64-78.e16. [PMID: 31923400 DOI: 10.1016/j.cell.2019.12.002] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 09/25/2019] [Accepted: 12/03/2019] [Indexed: 12/18/2022]
Abstract
Enteric-associated neurons (EANs) are closely associated with immune cells and continuously monitor and modulate homeostatic intestinal functions, including motility and nutrient sensing. Bidirectional interactions between neuronal and immune cells are altered during disease processes such as neurodegeneration or irritable bowel syndrome. We investigated the effects of infection-induced inflammation on intrinsic EANs (iEANs) and the role of intestinal muscularis macrophages (MMs) in this context. Using murine models of enteric infections, we observed long-term gastrointestinal symptoms, including reduced motility and loss of excitatory iEANs, which was mediated by a Nlrp6- and Casp11-dependent mechanism, depended on infection history, and could be reversed by manipulation of the microbiota. MMs responded to luminal infection by upregulating a neuroprotective program via β2-adrenergic receptor (β2-AR) signaling and mediated neuronal protection through an arginase 1-polyamine axis. Our results identify a mechanism of neuronal death post-infection and point to a role for tissue-resident MMs in limiting neuronal damage.
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Affiliation(s)
- Fanny Matheis
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065, USA
| | - Paul A Muller
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065, USA.
| | - Christina L Graves
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065, USA
| | - Ilana Gabanyi
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065, USA
| | - Zachary J Kerner
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065, USA
| | - Diego Costa-Borges
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065, USA
| | - Tomasz Ahrends
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065, USA
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Kiel University and University Hospital Schleswig-Holstein, Campus Kiel, Kiel 24105, Germany
| | - Daniel Mucida
- Laboratory of Mucosal Immunology, The Rockefeller University, New York, NY 10065, USA.
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22
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Pryzdial ELG, Sutherland MR, Lin BH, Horwitz M. Antiviral anticoagulation. Res Pract Thromb Haemost 2020; 4:774-788. [PMID: 32685886 PMCID: PMC7354393 DOI: 10.1002/rth2.12406] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/28/2020] [Accepted: 06/08/2020] [Indexed: 02/06/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a novel envelope virus that causes coronavirus disease 2019 (COVID-19). Hallmarks of COVID-19 are a puzzling form of thrombophilia that has elevated D-dimer but only modest effects on other parameters of coagulopathy. This is combined with severe inflammation, often leading to acute respiratory distress and possible lethality. Coagulopathy and inflammation are interconnected by the transmembrane receptor, tissue factor (TF), which initiates blood clotting as a cofactor for factor VIIa (FVIIa)-mediated factor Xa (FXa) generation. TF also functions from within the nascent TF/FVIIa/FXa complex to trigger profound changes via protease-activated receptors (PARs) in many cell types, including SARS-CoV-2-trophic cells. Therefore, aberrant expression of TF may be the underlying basis of COVID-19 symptoms. Evidence suggests a correlation between infection with many virus types and development of clotting-related symptoms, ranging from heart disease to bleeding, depending on the virus. Since numerous cell types express TF and can act as sites for virus replication, a model envelope virus, herpes simplex virus type 1 (HSV1), has been used to investigate the uptake of TF into the envelope. Indeed, HSV1 and other viruses harbor surface TF antigen, which retains clotting and PAR signaling function. Strikingly, envelope TF is essential for HSV1 infection in mice, and the FXa-directed oral anticoagulant apixaban had remarkable antiviral efficacy. SARS-CoV-2 replicates in TF-bearing epithelial and endothelial cells and may stimulate and integrate host cell TF, like HSV1 and other known coagulopathic viruses. Combined with this possibility, the features of COVID-19 suggest that it is a TFopathy, and the TF/FVIIa/FXa complex is a feasible therapeutic target.
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Affiliation(s)
- Edward L. G. Pryzdial
- Center for InnovationCanadian Blood ServicesVancouverBCCanada
- Centre for Blood Research and Department of Pathology and Laboratory MedicineUniversity of British ColumbiaVancouverBCCanada
| | - Michael R. Sutherland
- Center for InnovationCanadian Blood ServicesVancouverBCCanada
- Centre for Blood Research and Department of Pathology and Laboratory MedicineUniversity of British ColumbiaVancouverBCCanada
| | - Bryan H. Lin
- Center for InnovationCanadian Blood ServicesVancouverBCCanada
- Centre for Blood Research and Department of Pathology and Laboratory MedicineUniversity of British ColumbiaVancouverBCCanada
| | - Marc Horwitz
- Department of Microbiology and ImmunologyUniversity of British ColumbiaVancouverBCCanada
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23
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Li Z, Liu T, Yang N, Han D, Mi X, Li Y, Liu K, Vuylsteke A, Xiang H, Guo X. Neurological manifestations of patients with COVID-19: potential routes of SARS-CoV-2 neuroinvasion from the periphery to the brain. Front Med 2020; 14:533-541. [PMID: 32367431 PMCID: PMC7197033 DOI: 10.1007/s11684-020-0786-5] [Citation(s) in RCA: 165] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 04/03/2020] [Indexed: 12/18/2022]
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome Coronavirus 2 (SARS-CoV-2), has caused a global pandemic in only 3 months. In addition to major respiratory distress, characteristic neurological manifestations are also described, indicating that SARS-CoV-2 may be an underestimated opportunistic pathogen of the brain. Based on previous studies of neuroinvasive human respiratory coronaviruses, it is proposed that after physical contact with the nasal mucosa, laryngopharynx, trachea, lower respiratory tract, alveoli epithelium, or gastrointestinal mucosa, SARS-CoV-2 can induce intrinsic and innate immune responses in the host involving increased cytokine release, tissue damage, and high neurosusceptibility to COVID-19, especially in the hypoxic conditions caused by lung injury. In some immune-compromised individuals, the virus may invade the brain through multiple routes, such as the vasculature and peripheral nerves. Therefore, in addition to drug treatments, such as pharmaceuticals and traditional Chinese medicine, non-pharmaceutical precautions, including facemasks and hand hygiene, are critically important.
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Affiliation(s)
- Zhengqian Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Taotao Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Ning Yang
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Dengyang Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Xinning Mi
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Yue Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Kaixi Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China
| | - Alain Vuylsteke
- Department of Anaesthesia and Intensive Care, Royal Papworth Hospital NHS Foundation Trust, Cambridge, UK
| | - Hongbing Xiang
- Department of Anesthesiology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, Beijing, 100191, China.
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24
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Lee AG, Scott JM, Fabbrizi MR, Jiang X, Sojka DK, Miller MJ, Baldridge MT, Yokoyama WM, Shin H. T cell response kinetics determines neuroinfection outcomes during murine HSV infection. JCI Insight 2020; 5:134258. [PMID: 32161194 PMCID: PMC7141405 DOI: 10.1172/jci.insight.134258] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 02/12/2020] [Indexed: 12/11/2022] Open
Abstract
Herpes simplex virus-2 (HSV-2) and HSV-1 both can cause genital herpes, a chronic infection that establishes a latent reservoir in the nervous system. Clinically, the recurrence frequency of HSV-1 genital herpes is considerably less than HSV-2 genital herpes, which correlates with reduced neuronal infection. The factors dictating the disparate outcomes of HSV-1 and HSV-2 genital herpes are unclear. In this study, we show that vaginal infection of mice with HSV-1 leads to the rapid appearance of mature DCs in the draining lymph node, which is dependent on an early burst of NK cell-mediated IFN-γ production in the vagina that occurs after HSV-1 infection but not HSV-2 infection. Rapid DC maturation after HSV-1 infection, but not HSV-2 infection, correlates with the accelerated generation of a neuroprotective T cell response and early accumulation of IFN-γ-producing T cells at the site of infection. Depletion of T cells or loss of IFN-γ receptor (IFN-γR) expression in sensory neurons both lead to a marked loss of neuroprotection only during HSV-1, recapitulating a prominent feature of HSV-2 infection. Our experiments reveal key differences in host control of neuronal HSV-1 and HSV-2 infection after genital exposure of mice, and they define parameters of a successful immune response against genital herpes.
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Affiliation(s)
| | | | | | | | - Dorothy K. Sojka
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | | | | | - Wayne M. Yokoyama
- Division of Rheumatology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
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25
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Gardner JK, Swaims-Kohlmeier A, Herbst-Kralovetz MM. IL-36γ Is a Key Regulator of Neutrophil Infiltration in the Vaginal Microenvironment and Limits Neuroinvasion in Genital HSV-2 Infection. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2019; 203:2655-2664. [PMID: 31578266 PMCID: PMC9978960 DOI: 10.4049/jimmunol.1900280] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 09/06/2019] [Indexed: 01/01/2023]
Abstract
HSV-2 is a neurotropic virus that causes a persistent, lifelong infection that increases risk for other sexually transmitted infections. The vaginal epithelium is the first line of defense against HSV-2 and coordinates the immune response through the secretion of immune mediators, including the proinflammatory cytokine IL-36γ. Previously, we showed that IL-36γ treatment promoted transient polymorphonuclear cell infiltration to the vaginal cavity and protected against lethal HSV-2 challenge. In this report, we reveal that IL-36γ specifically induces transient neutrophil infiltration but does not impact monocyte and macrophage recruitment. Using IL-36γ-/- mice in a lethal HSV-2 challenge model, we show that neutrophil counts are significantly reduced at 1 and 2 d postinfection and that KC-mediated mature neutrophil recruitment is impaired in IL-36γ-/- mice. Additionally, IL-36γ-/- mice develop genital disease more rapidly, have significantly reduced survival time, and exhibit an increased incidence of hind limb paralysis that is linked to productive HSV-2 infection in the brain stem. IL-36γ-/- mice also exhibit a significant delay in clearance of the virus from the vaginal epithelium and a more rapid spread of HSV-2 to the spinal cord, bladder, and colon. We further show that the decreased survival time and increased virus spread observed in IL-36γ-/- mice are not neutrophil-dependent, suggesting that IL-36γ may function to limit HSV-2 spread in the nervous system. Ultimately, we demonstrate that IL-36γ is a key regulator of neutrophil recruitment in the vaginal microenvironment and may function to limit HSV-2 neuroinvasion.
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Affiliation(s)
- Jameson K. Gardner
- Department of Basic Medical Sciences, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA,Molecular and Cellular Biology Graduate Program, School of Life Sciences, Arizona State University, Tempe, Arizona, USA
| | - Alison Swaims-Kohlmeier
- Laboratory Branch, Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Melissa M. Herbst-Kralovetz
- Department of Basic Medical Sciences, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA,Department of Obstetrics and Gynecology, College of Medicine-Phoenix, University of Arizona, Phoenix, Arizona, USA
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26
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Wang P, Gamero AM, Jensen LE. IL-36 promotes anti-viral immunity by boosting sensitivity to IFN-α/β in IRF1 dependent and independent manners. Nat Commun 2019; 10:4700. [PMID: 31619669 PMCID: PMC6795910 DOI: 10.1038/s41467-019-12318-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 09/01/2019] [Indexed: 12/18/2022] Open
Abstract
The functions of the IL-36 cytokines remain poorly understood. We report a previously unrecognized mechanism whereby IL-36 promotes innate antiviral immunity in mouse and human models of herpes simplex virus-1 (HSV-1) infections. HSV-1 actively suppresses production of type I interferon (IFN); our data reveal that IL-36 overcomes this immune evasion strategy by increasing cellular sensitivity to IFN. IL-36β deficient mice display impaired IFN responses and poorly restrict viral replication in skin keratinocytes. In mouse and human keratinocytes IL-36 elicits an antiviral state driven by STAT1 and STAT2 via enhanced expression of IFNAR1 and IFNAR2 subunits of the type I IFN receptor. The degree of IFN regulatory factor 1 (IRF1) involvement is species dependent, with IRF1 playing a more prominent role in human cells. Similar mechanisms are activated by IL-1. Overall, IL-36 acts as an antiviral cytokine by potentiating type I IFN signaling and thereby upholds immune responses to viruses that limit the production of IFNs.
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Affiliation(s)
- Peng Wang
- Department of Microbiology and Immunology, Temple University Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA
| | - Ana M Gamero
- Department of Medical Genetics and Molecular Biochemistry, Temple University Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA
| | - Liselotte E Jensen
- Department of Microbiology and Immunology, Temple University Lewis Katz School of Medicine, Philadelphia, PA, 19140, USA.
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27
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Abstract
Viruses are causative agents for many diseases and infect all living organisms on the planet. Development of effective therapies has relied on our ability to isolate and culture viruses in vitro, allowing mechanistic studies and strategic interventions. While this reductionist approach is necessary, testing the relevance of in vitro findings often takes a very long time. New developments in imaging technologies are transforming our experimental approach where viral pathogenesis can be studied in vivo at multiple spatial and temporal resolutions. Here, we outline a vision of a top-down approach using noninvasive whole-body imaging as a guide for in-depth characterization of key tissues, physiologically relevant cell types, and pathways of spread to elucidate mechanisms of virus spread and pathogenesis. Tool development toward imaging of infectious diseases is expected to transform clinical diagnosis and treatment.
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Affiliation(s)
- Pradeep D Uchil
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut 06510, USA; , , ,
| | - Kelsey A Haugh
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut 06510, USA; , , ,
| | - Ruoxi Pi
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut 06510, USA; , , ,
| | - Walther Mothes
- Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut 06510, USA; , , ,
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28
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Herpes Simplex Virus 2 in Autonomic Ganglia: Evidence for Spontaneous Reactivation. J Virol 2019; 93:JVI.00227-19. [PMID: 30894469 DOI: 10.1128/jvi.00227-19] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 02/20/2019] [Indexed: 01/09/2023] Open
Abstract
Herpes simplex virus 2 (HSV-2) can be transmitted in the presence or absence of lesions, allowing efficient spread among the general population. Recurrent HSV genital lesions are thought to arise from reactivated latent virus in sensory cell bodies of the dorsal root ganglia (DRG). However, HSV-2 has also been found latent in autonomic ganglia. Spontaneous reactivation or a low level of chronic infection could theoretically also occur in these peripheral nervous tissues, contributing to the presence of infectious virus in the periphery and to viral transmission. Use of a recently described, optimized virus with a monomeric mNeonGreen protein fused to viral capsid protein 26 (VP26) permitted detection of reactivating virus in explanted ganglia and cryosections of DRG and the sacral sympathetic ganglia (SSG) from latently infected guinea pigs. Immediate early, early, and late gene expression were quantified by droplet digital reverse transcription-PCR (ddRT-PCR), providing further evidence of viral reactivation not only in the expected DRG but also in the sympathetic SSG. These findings indicate that viral reactivation from autonomic ganglia is a feature of latent viral infection and that these reactivations likely contribute to viral pathogenesis.IMPORTANCE HSV-2 is a ubiquitous important human pathogen that causes recurrent infections for the life of its host. We hypothesized that the autonomic ganglia have important roles in viral reactivation, and this study sought to determine whether this is correct in the clinically relevant guinea pig vaginal infection model. Our findings indicate that sympathetic ganglia are sources of reactivating virus, helping explain how the virus causes lifelong recurrent disease.
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29
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Salimi Jazi F, Chandler JM, Thorson CM, Sinclair TJ, Hazard FK, Kerner JA, Dutta S, Dunn JCY, Chao SD. Delayed appearance of mature ganglia in an infant with an atypical presentation of total colonic and small bowel aganglionosis: a case report. BMC Pediatr 2019; 19:93. [PMID: 30953480 PMCID: PMC6449943 DOI: 10.1186/s12887-019-1456-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 03/13/2019] [Indexed: 12/14/2022] Open
Abstract
Background Total colonic and small bowel aganglionosis (TCSA) occurs in less than 1% of all Hirschsprung’s disease patients. Currently, the mainstay of treatment is surgery. However, in patients with TCSA, functional outcomes are often poor. A characteristic transition zone in TCSA can be difficult to identify which may complicate surgery and may often require multiple operations. Case presentation We present the case of a male infant who was diagnosed with biopsy-proven total colonic aganglionosis with extensive small bowel involvement as a neonate. The patient was diverted at one month of age based on leveling biopsies at 10 cm from the Ligament of Treitz. At 7 months of age, during stoma revision for a prolapsed stoma, intra-operative peristalsis was observed in nearly the entire length of the previously aganglionic bowel, and subsequent biopsies demonstrated the appearance of mature ganglion cells in a previously aganglionic segment. Conclusions TCSA remains a major challenge for pediatric surgeons. Our case introduces new controversy to our understanding of aganglionosis. Our observations warrant further research into the possibility of post-natal ganglion maturation and encourage surgeons to consider a more conservative surgical approach.
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Affiliation(s)
- Fereshteh Salimi Jazi
- Department of Surgery, University of Texas at Galveston, 301 University Blvd, Galveston, TX, 77555, USA
| | - Julia M Chandler
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Alway Building M116, MC: 5733, Stanford, CA, 94305, USA
| | - Chad M Thorson
- Division of Pediatric Surgery, Department of Surgery, University of Miami Health System, 1120 NW 14th Street, Suite 450, Miami, FL, 33136, USA
| | - Tiffany J Sinclair
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Alway Building M116, MC: 5733, Stanford, CA, 94305, USA
| | - Florette K Hazard
- Department of Pathology, Stanford University School of Medicine, 300 Pasteur Drive Rm H2110, Stanford, CA, 94305, USA
| | - John A Kerner
- Department of Pediatrics - Gastroenterology, Stanford University School of Medicine, 730 Welch Rd 2nd Fl, Palo Alto, CA, 94304, USA
| | | | - James C Y Dunn
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Alway Building M116, MC: 5733, Stanford, CA, 94305, USA
| | - Stephanie D Chao
- Division of Pediatric Surgery, Department of Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Alway Building M116, MC: 5733, Stanford, CA, 94305, USA.
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30
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Sutherland MR, Simon AY, Shanina I, Horwitz MS, Ruf W, Pryzdial ELG. Virus envelope tissue factor promotes infection in mice. J Thromb Haemost 2019; 17:482-491. [PMID: 30659719 PMCID: PMC6397068 DOI: 10.1111/jth.14389] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Indexed: 01/04/2023]
Abstract
Essentials The coagulation initiator, tissue factor (TF), is on the herpes simplex virus 1 (HSV1) surface. HSV1 surface TF was examined in mice as an antiviral target since it enhances infection in vitro. HSV1 surface TF facilitated infection of all organs evaluated and anticoagulants were antiviral. Protease activated receptor 2 inhibited infection in vivo and its pre-activation was antiviral. SUMMARY: Background Tissue factor (TF) is the essential cell surface initiator of coagulation, and mediates cell signaling through protease-activated receptor (PAR) 2. Having a diverse cellular distribution, TF is involved in many biological pathways and pathologies. Our earlier work identified host cell-derived TF on the envelope covering several viruses, and showed its involvement in enhanced cell infection in vitro. Objective In the current study, we evaluated the in vivo effects of virus surface TF on infection and on the related modulator of infection PAR2. Methods With the use of herpes simplex virus type 1 (HSV1) as a model enveloped virus, purified HSV1 was generated with or without envelope TF through propagation in a TF-inducible cell line. Infection was studied after intravenous inoculation of BALB/c, C57BL/6J or C57BL/6J PAR2 knockout mice with 5 × 105 plaque-forming units of HSV1, mimicking viremia. Three days after inoculation, organs were processed, and virus was quantified with plaque-forming assays and quantitative real-time PCR. Results Infection of brain, lung, heart, spinal cord and liver by HSV1 required viral TF. Demonstrating promise as a therapeutic target, virus-specific anti-TF mAbs or small-molecule inhibitors of coagulation inhibited infection. PAR2 modulates HSV1 in vivo as demonstrated with PAR2 knockout mice and PAR2 agonist peptide. Conclusion TF is a constituent of many permissive host cell types. Therefore, the results presented here may explain why many viruses are correlated with hemostatic abnormalities, and indicate that TF is a novel pan-specific envelope antiviral target.
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MESH Headings
- Animals
- Anticoagulants/pharmacology
- Antiviral Agents/pharmacology
- Disease Models, Animal
- Female
- Herpes Simplex/blood
- Herpes Simplex/drug therapy
- Herpes Simplex/immunology
- Herpes Simplex/virology
- Herpesvirus 1, Human/drug effects
- Herpesvirus 1, Human/immunology
- Herpesvirus 1, Human/metabolism
- Host-Pathogen Interactions
- Injections, Intravenous
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- Receptor, PAR-2/genetics
- Receptor, PAR-2/metabolism
- Th1 Cells/immunology
- Th1 Cells/virology
- Thromboplastin/administration & dosage
- Thromboplastin/metabolism
- Viral Envelope Proteins/administration & dosage
- Viral Envelope Proteins/metabolism
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Affiliation(s)
- Michael R Sutherland
- Canadian Blood Services, Center for Innovation, Vancouver, Canada
- Centre for Blood Research and Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
| | - Ayo Y Simon
- Canadian Blood Services, Center for Innovation, Vancouver, Canada
- Centre for Blood Research and Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
- African Centre of Excellence on Neglected Tropical Diseases and Forensic Biotechnology and Veterinary Teaching Hospital, Ahmadu Bello University, Zaria, Nigeria
- Preclinical Research and Development, Emergent BioSolutions, Winnipeg, Manitoba, Canada
| | - Iryna Shanina
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, Canada
| | - Marc S Horwitz
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, Canada
| | - Wolfram Ruf
- Immunology and Microbial Sciences, The Scripps Research Institute, La Jolla, CA, USA
- Center for Thrombosis and Hemostasis, University Medical Center, Mainz, Germany
| | - Edward L G Pryzdial
- Canadian Blood Services, Center for Innovation, Vancouver, Canada
- Centre for Blood Research and Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, Canada
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31
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White JP, Xiong S, Malvin NP, Khoury-Hanold W, Heuckeroth RO, Stappenbeck TS, Diamond MS. Intestinal Dysmotility Syndromes following Systemic Infection by Flaviviruses. Cell 2018; 175:1198-1212.e12. [PMID: 30293866 DOI: 10.1016/j.cell.2018.08.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 08/07/2018] [Accepted: 08/29/2018] [Indexed: 02/07/2023]
Abstract
Although chronic gastrointestinal dysmotility syndromes are a common worldwide health problem, underlying causes for these disorders are poorly understood. We show that flavivirus infection of enteric neurons leads to acute neuronal injury and cell death, inflammation, bowel dilation, and slowing of intestinal transit in mice. Flavivirus-primed CD8+ T cells promote these phenotypes, as their absence diminished enteric neuron injury and intestinal transit delays, and their adoptive transfer reestablished dysmotility after flavivirus infection. Remarkably, mice surviving acute flavivirus infection developed chronic gastrointestinal dysmotility that was exacerbated by immunization with an unrelated alphavirus vaccine or exposure to a non-infectious inflammatory stimulus. This model of chronic post-infectious gastrointestinal dysmotility in mice suggests that viral infections with tropism for enteric neurons and the ensuing immune response might contribute to the development of bowel motility disorders in humans. These results suggest an opportunity for unique approaches to diagnosis and therapy of gastrointestinal dysmotility syndromes.
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Affiliation(s)
- James P White
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Shanshan Xiong
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Nicole P Malvin
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | | | - Robert O Heuckeroth
- Department of Pediatrics, the Children's Hospital of Philadelphia Research Institute, the Perelman School of Medicine at the University of Pennsylvania, Abramson Research Center, Philadelphia, PA 19104, USA
| | - Thaddeus S Stappenbeck
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA.
| | - Michael S Diamond
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO 63110, USA; The Andrew M. and Jane M. Bursky Center for Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, MO 63110, USA.
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32
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Chen H, Bartee MY, Yaron JR, Liu L, Zhang L, Zheng D, Hogue IB, Bullard WL, Tibbetts S, Lucas AR. Mouse Gamma Herpesvirus MHV-68 Induces Severe Gastrointestinal (GI) Dilatation in Interferon Gamma Receptor-Deficient Mice (IFNγR -/-) That Is Blocked by Interleukin-10. Viruses 2018; 10:E518. [PMID: 30249047 PMCID: PMC6213885 DOI: 10.3390/v10100518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/09/2018] [Accepted: 09/21/2018] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel disease (IBD) and Clostridium difficile infection cause gastrointestinal (GI) distension and, in severe cases, toxic megacolon with risk of perforation and death. Herpesviruses have been linked to severe GI dilatation. MHV-68 is a model for human gamma herpesvirus infection inducing GI dilatation in interleukin-10 (IL-10)-deficient mice but is benign in wildtype mice. MHV-68 also causes lethal vasculitis and pulmonary hemorrhage in interferon gamma receptor-deficient (IFNγR-/-) mice, but GI dilatation has not been reported. In prior work the Myxomavirus-derived anti-inflammatory serpin, Serp-1, improved survival, reducing vasculitis and pulmonary hemorrhage in MHV-68-infected IFNγR-/- mice with significantly increased IL-10. IL-10 has been investigated as treatment for GI dilatation with variable efficacy. We report here that MHV-68 infection produces severe GI dilatation with inflammation and gut wall degradation in 28% of INFγR-/- mice. Macrophage invasion and smooth muscle degradation were accompanied by decreased concentrations of T helper (Th2), B, monocyte, and dendritic cells. Plasma and spleen IL-10 were significantly reduced in mice with GI dilatation, while interleukin-1 beta (IL-1β), IL-6, tumor necrosis factor alpha (TNFα) and INFγ increased. Treatment of gamma herpesvirus-infected mice with exogenous IL-10 prevents severe GI inflammation and dilatation, suggesting benefit for herpesvirus-induced dilatation.
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Affiliation(s)
- Hao Chen
- Department of Medicine, Divisions of Cardiovascular Medicine and Rheumatology, University of Florida, Gainesville, FL 32610-0277, USA.
| | - Mee Yong Bartee
- Department of Medicine, Divisions of Cardiovascular Medicine and Rheumatology, University of Florida, Gainesville, FL 32610-0277, USA.
| | - Jordan R Yaron
- Centers for Personalized Diagnostics and Immunotherapy, Vaccines and Virotherapy, Biodesign Institute, Arizona State University, Tempe, AZ 85287-6401, USA.
| | - Liying Liu
- Department of Surgery, BIDMC, Harvard Medical School, Boston, MA 02115, USA.
| | - Liqiang Zhang
- Centers for Personalized Diagnostics and Immunotherapy, Vaccines and Virotherapy, Biodesign Institute, Arizona State University, Tempe, AZ 85287-6401, USA.
| | - Donghang Zheng
- Department of Medicine, Divisions of Cardiovascular Medicine and Rheumatology, University of Florida, Gainesville, FL 32610-0277, USA.
| | - Ian B Hogue
- Centers for Personalized Diagnostics and Immunotherapy, Vaccines and Virotherapy, Biodesign Institute, Arizona State University, Tempe, AZ 85287-6401, USA.
| | - Whitney L Bullard
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA.
| | - Scott Tibbetts
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA.
| | - Alexandra R Lucas
- Department of Medicine, Divisions of Cardiovascular Medicine and Rheumatology, University of Florida, Gainesville, FL 32610-0277, USA.
- Centers for Personalized Diagnostics and Immunotherapy, Vaccines and Virotherapy, Biodesign Institute, Arizona State University, Tempe, AZ 85287-6401, USA.
- Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, FL 32610, USA.
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Abstract
Peripheral nerve damage initiates a complex series of structural and cellular processes that culminate in chronic neuropathic pain. The recent success of a type 2 angiotensin II (Ang II) receptor (AT2R) antagonist in a phase II clinical trial for the treatment of postherpetic neuralgia suggests angiotensin signaling is involved in neuropathic pain. However, transcriptome analysis indicates a lack of AT2R gene (Agtr2) expression in human and rodent sensory ganglia, raising questions regarding the tissue/cell target underlying the analgesic effect of AT2R antagonism. We show that selective antagonism of AT2R attenuates neuropathic but not inflammatory mechanical and cold pain hypersensitivity behaviors in mice. Agtr2-expressing macrophages (MΦs) constitute the predominant immune cells that infiltrate the site of nerve injury. Interestingly, neuropathic mechanical and cold pain hypersensitivity can be attenuated by chemogenetic depletion of peripheral MΦs and AT2R-null hematopoietic cell transplantation. Our study identifies AT2R on peripheral MΦs as a critical trigger for pain sensitization at the site of nerve injury, and therefore proposes a translatable peripheral mechanism underlying chronic neuropathic pain.
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Chaudhury A, Dendi VSR, Chaudhury M, Jain A, Kasarla MR, Panuganti K, Jain G, Ramanujam A, Rena B, Koyagura SR, Fogla S, Kumar S, Shekhawat NS, Maddur S. HSV1/2 Genital Infection in Mice Cause Reversible Delayed Gastrointestinal Transit: A Model for Enteric Myopathy. Front Med (Lausanne) 2018; 5:176. [PMID: 30065927 PMCID: PMC6056620 DOI: 10.3389/fmed.2018.00176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 05/21/2018] [Indexed: 12/20/2022] Open
Abstract
In an interesting investigation by Khoury-Hanold et al. (1), genital infection of mice with herpes simplex virus 1 (HSV1) were reported to cause multiple pelvic organ involvement and obstruction. A small subset of mice succumbed after the first week of HSV1 infection. The authors inferred that the mice died due to toxic megacolon. In a severe form of mechanical and/or functional obstruction involving gross dilation of the colon and profound toxemia, the presentation is called "toxic megacolon." The representative observations by Khoury-Hanold likely do not resemble toxic megacolon. The colon was only slightly dilated and benign appearing. Importantly, HSV1 infection affected the postjunctional mechanisms of smooth muscle relaxation like the sildenafil-response proteins, which may have been responsible for defective nitrergic neurotransmission and the delayed transit. Orally administered polyethylene glycol reversed the gastrointestinal "obstruction," suggesting a mild functional type of slowed luminal transit, resembling constipation, rather than toxic megacolon, which cannot be reversed by an osmotic laxative without perforating the gut. The authors suggest that the mice did not develop HSV1 encephalitis, the commonly known cause of mortality. The premature death of some of the mice could be related to the bladder outlet obstruction, whose backflow effects may alter renal function, electrolyte abnormalities and death. Muscle strip recordings of mechanical relaxation after electrical field stimulation of gastrointestinal, urinary bladder or cavernosal tissues shall help obtain objective quantitative evidence of whether HSV infection indeed cause pelvic multi-organ dysfunction and impairment of autonomic neurotransmission and postjunctional electromechanical relaxation mechanisms of these organs.
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Affiliation(s)
| | | | | | - Astha Jain
- Wanderful Media/University of Southern California, Los Angeles, CA, United States
| | | | | | - Gaurav Jain
- Berkshire Medical Center, Pittsfield, MA, United States
| | | | - Bhavin Rena
- Xenco Laboratories, Houston, TX, United States
| | | | - Sumit Fogla
- Beaumont Hospital, Grosse Pointe, MI, United States
| | - Sunil Kumar
- Neshoba County General Hospital, Philadelphia, MS, United States
| | | | - Srinivas Maddur
- All India Institute of Medical Sciences, New Delhi, India
- ESIC Medical College, Sanathnagar, India
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Innate Immune Mechanisms and Herpes Simplex Virus Infection and Disease. ADVANCES IN ANATOMY EMBRYOLOGY AND CELL BIOLOGY 2018; 223:49-75. [PMID: 28528439 DOI: 10.1007/978-3-319-53168-7_3] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Innate immune responses play a major role in the control of herpes simplex virus (HSV) infections, and a multiplicity of mechanisms have emerged as a result of human evolution to sense and respond to HSV infections. HSV in turn has evolved a number of ways to evade immune detection and to blunt human innate immune responses. In this review, we summarize the major host innate immune mechanisms and the HSV evasion mechanisms that have evolved. We further discuss how disease can result if this equilibrium between virus and host response is disrupted.
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36
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Topical application of aminoglycoside antibiotics enhances host resistance to viral infections in a microbiota-independent manner. Nat Microbiol 2018; 3:611-621. [PMID: 29632368 PMCID: PMC5918160 DOI: 10.1038/s41564-018-0138-2] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 02/27/2018] [Indexed: 12/27/2022]
Abstract
Antibiotics are widely used to treat infections in humans. However, the impact of antibiotic use on host cells is understudied. Here we identify an antiviral effect of commonly used aminoglycoside antibiotics. We show that topical mucosal application of aminoglycosides prophylactically increased host resistance to a broad range of viral infections including herpes simplex viruses, influenza A virus and Zika virus. Aminoglycoside treatment also reduced viral replication in primary human cells. This antiviral activity was independent of the microbiota as aminoglycoside treatment protected germ-free mice. Microarray analysis uncovered a marked upregulation of transcripts for interferon-stimulated genes (ISGs) following aminoglycoside application. ISG induction was mediated by TLR3, and required TIR-domain-containing adapter-inducing interferon-β (TRIF), signaling adaptor, and interferon regulatory factors 3 (IRF3) and IRF7, transcription factors that promote ISG expression. XCR1+ dendritic cells, which uniquely express TLR3, were recruited to the vaginal mucosa upon aminoglycoside treatment and were required for ISG induction. These results highlight an unexpected ability of aminoglycoside antibiotics to confer broad antiviral resistance in vivo.
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Brun P, Qesari M, Marconi PC, Kotsafti A, Porzionato A, Macchi V, Schwendener RA, Scarpa M, Giron MC, Palù G, Calistri A, Castagliuolo I. Herpes Simplex Virus Type 1 Infects Enteric Neurons and Triggers Gut Dysfunction via Macrophage Recruitment. Front Cell Infect Microbiol 2018; 8:74. [PMID: 29600197 PMCID: PMC5862801 DOI: 10.3389/fcimb.2018.00074] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 02/27/2018] [Indexed: 12/27/2022] Open
Abstract
Herpes Simplex Virus type 1 (HSV-1), a neurotropic pathogen widespread in human population, infects the enteric nervous system (ENS) in humans and rodents and causes intestinal neuromuscular dysfunction in rats. Although infiltration of inflammatory cells in the myenteric plexus and neurodegeneration of enteric nerves are common features of patients suffering from functional intestinal disorders, the proof of a pathogenic link with HSV-1 is still unsettled mainly because the underlying mechanisms are largely unknown. In this study we demonstrated that following intragastrical administration HSV-1 infects neurons within the myenteric plexus resulting in functional and structural alterations of the ENS. By infecting mice with HSV-1 replication-defective strain we revealed that gastrointestinal neuromuscular anomalies were however independent of viral replication. Indeed, enteric neurons exposed to UV-inactivated HSV-1 produced monocyte chemoattractant protein-1 (MCP-1/CCL2) to recruit activated macrophages in the longitudinal muscle myenteric plexus. Infiltrating macrophages produced reactive oxygen and nitrogen species and directly harmed enteric neurons resulting in gastrointestinal dysmotility. In HSV-1 infected mice intestinal neuromuscular dysfunctions were ameliorated by in vivo administration of (i) liposomes containing dichloromethylene bisphosphonic acid (clodronate) to deplete tissue macrophages, (ii) CCR2 chemokine receptor antagonist RS504393 to block the CCL2/CCR2 pathway, (iii) Nω-Nitro-L-arginine methyl ester hydrochloride (L-NAME) and AR-C 102222 to quench production of nitrogen reactive species produced via iNOS. Overall these data demonstrate that HSV-1 infection makes enteric neurons recruit macrophages via production of a specific chemoattractant factor. The resulting inflammatory reaction is mandatory for intestinal dysmotility. These findings provide insights into the neuro-immune communication that occurs in the ENS following HSV-1 infection and allow recognition of an original pathophysiologic mechanism underlying gastrointestinal diseases as well as identification of novel therapeutic targets.
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Affiliation(s)
- Paola Brun
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Marsela Qesari
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Peggy C Marconi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Andromachi Kotsafti
- Esophageal and Digestive Tract Surgery Unit, Veneto Institute of Oncology IOV-IRCCS, Padova, Italy
| | | | - Veronica Macchi
- Department of Neurosciences, University of Padova, Padova, Italy
| | - Reto A Schwendener
- Institute of Molecular Cancer Research, University of Zurich, Zurich, Switzerland
| | - Marco Scarpa
- Esophageal and Digestive Tract Surgery Unit, Veneto Institute of Oncology IOV-IRCCS, Padova, Italy
| | - Maria C Giron
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Giorgio Palù
- Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Arianna Calistri
- Department of Molecular Medicine, University of Padova, Padova, Italy
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38
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Posavad CM, Zhao L, Dong L, Jin L, Stevens CE, Magaret AS, Johnston C, Wald A, Zhu J, Corey L, Koelle DM. Enrichment of herpes simplex virus type 2 (HSV-2) reactive mucosal T cells in the human female genital tract. Mucosal Immunol 2017; 10:1259-1269. [PMID: 28051084 PMCID: PMC5496807 DOI: 10.1038/mi.2016.118] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 11/21/2016] [Indexed: 02/04/2023]
Abstract
Local mucosal cellular immunity is critical in providing protection from HSV-2. To characterize and quantify HSV-2-reactive mucosal T cells, lymphocytes were isolated from endocervical cytobrush and biopsy specimens from 17 HSV-2-infected women and examined ex vivo for the expression of markers associated with maturation and tissue residency and for functional T-cell responses to HSV-2. Compared with their circulating counterparts, cervix-derived CD4+ and CD8+ T cells were predominantly effector memory T cells (CCR7-/CD45RA-) and the majority expressed CD69, a marker of tissue residency. Co-expression of CD103, another marker of tissue residency, was highest on cervix-derived CD8+ T cells. Functional HSV-2 reactive CD4+ and CD8+ T-cell responses were detected in cervical samples and a median of 17% co-expressed CD103. HSV-2-reactive CD4+ T cells co-expressed IL-2 and were significantly enriched in the cervix compared with blood. This first direct ex vivo documentation of local enrichment of HSV-2-reactive T cells in the human female genital mucosa is consistent with the presence of antigen-specific tissue-resident memory T cells. Ex vivo analysis of these T cells may uncover tissue-specific mechanisms of local control of HSV-2 to assist the development of vaccine strategies that target protective T cells to sites of HSV-2 infection.
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Affiliation(s)
- Christine M. Posavad
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Lin Zhao
- Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Lichun Dong
- Department of Medicine, University of Washington, Seattle, WA
| | - Lei Jin
- Department of Laboratory Medicine, University of Washington, Seattle, WA
| | | | - Amalia S. Magaret
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA,Department of Biostatistics, University of Washington, Seattle, WA
| | - Christine Johnston
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Medicine, University of Washington, Seattle, WA
| | - Anna Wald
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA,Department of Medicine, University of Washington, Seattle, WA,Department of Epidemiology, University of Washington, Seattle, WA
| | - Jia Zhu
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA
| | - Lawrence Corey
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA,Department of Medicine, University of Washington, Seattle, WA
| | - David M. Koelle
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA,Department of Laboratory Medicine, University of Washington, Seattle, WA,Department of Medicine, University of Washington, Seattle, WA,Department of Global Health, University of Washington, Seattle, WA,Benaroya Research Institute, Seattle, WA
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39
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Carod-Artal FJ. Infectious diseases causing autonomic dysfunction. Clin Auton Res 2017; 28:67-81. [PMID: 28730326 DOI: 10.1007/s10286-017-0452-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 07/10/2017] [Indexed: 12/11/2022]
Abstract
OBJECTIVES To review infectious diseases that may cause autonomic dysfunction. METHODS Review of published papers indexed in medline/embase. RESULTS Autonomic dysfunction has been reported in retrovirus (human immunodeficiency virus (HIV), human T-lymphotropic virus), herpes viruses, flavivirus, enterovirus 71 and lyssavirus infections. Autonomic dysfunction is relatively common in HIV-infected patients and heart rate variability is reduced even in early stages of infection. Orthostatic hypotension, urinary dysfunction and hypohidrosis have been described in tropical spastic paraparesis patients. Varicella zoster reactivation from autonomic ganglia may be involved in visceral disease and chronic intestinal pseudo-obstruction. Autonomic and peripheral nervous system dysfunction may happen in acute tick-borne encephalitis virus infections. Hydrophobia, hypersalivation, dyspnea, photophobia, and piloerection are frequently observed in human rabies. Autonomic dysfunction and vagal denervation is common in Chagas disease. Neuronal depopulation occurs mainly in chagasic heart disease and myenteric plexus, and megacolon, megaesophagus and cardiomyopathy are common complications in the chronic stage of Chagas disease. Parasympathetic autonomic dysfunction precedes left ventricle systolic dysfunction in Chagas disease. A high prevalence of subclinical autonomic neuropathy in leprosy patients has been reported, and autonomic nerve dysfunction may be an early manifestation of the disease. Autonomic dysfunction features in leprosy include anhidrosis, impaired sweating function, localised alopecia ,and reduced heart rate variability. Urinary retention and intestinal pseudo-obstruction have been described in Lyme disease. Diphtheritic polyneuropathy, tetanus and botulism are examples of bacterial infections releasing toxins that affect the autonomic nervous system. CONCLUSIONS Autonomic dysfunction may be responsible for additional morbidity in some infectious diseases.
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Affiliation(s)
- Francisco Javier Carod-Artal
- Neurology Department, Raigmore Hospital, Inverness, UK. .,Health Sciences Faculty, Universitat Internacional de Catalunya (UIC), Barcelona, Spain.
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Interleukin-36β provides protection against HSV-1 infection, but does not modulate initiation of adaptive immune responses. Sci Rep 2017; 7:5799. [PMID: 28724920 PMCID: PMC5517484 DOI: 10.1038/s41598-017-05363-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 05/26/2017] [Indexed: 12/18/2022] Open
Abstract
Interleukin-36 (IL-36) represents three cytokines, IL-36α, IL-36β and IL-36γ, which bind to the same receptor, IL-1RL2; however, their physiological function(s) remain poorly understood. Here, the role of IL-36 in immunity against HSV-1 was examined using the flank skin infection mouse model. Expression analyses revealed increased levels of IL-36α and IL-36β mRNA in infected skin, while constitutive IL-36γ levels remained largely unchanged. In human keratinocytes, IL-36α mRNA was induced by HSV-1, while IL-1β and TNFα increased all three IL-36 mRNAs. The dominant alternative splice variant of human IL-36β mRNA was isoform 2, which is the ortholog of the known mouse IL-36β mRNA. Mice deficient in IL-36β, but not IL-36α or IL-36γ, succumbed more frequently to HSV-1 infection than wild type mice. Furthermore, IL-36β−/− mice developed larger zosteriform skin lesions along infected neurons. Levels of HSV-1 specific antibodies, CD8+ cells and IFNγ-producing CD4+ cells were statistically equal in wild type and IL-36β−/− mice, suggesting similar initiation of adaptive immunity in the two strains. This correlated with the time at which HSV-1 genome and mRNA levels in primary skin lesions started to decline in both wild type and IL-36β−/− mice. Our data indicate that IL-36β has previously unrecognized functions protective against HSV-1 infection.
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41
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Zhang J, Liu H, Wei B. Immune response of T cells during herpes simplex virus type 1 (HSV-1) infection. J Zhejiang Univ Sci B 2017; 18:277-288. [PMID: 28378566 PMCID: PMC5394093 DOI: 10.1631/jzus.b1600460] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 01/07/2017] [Indexed: 12/14/2022]
Abstract
Herpes simplex virus type 1 (HSV-1), a neurotropic member of the alphaherpes virus family, is among the most prevalent and successful human pathogens. HSV-1 can cause serious diseases at every stage of life including fatal disseminated disease in newborns, cold sores, eye disease, and fatal encephalitis in adults. HSV-1 infection can trigger rapid immune responses, and efficient inhibition and clearance of HSV-1 infection rely on both the innate and adaptive immune responses of the host. Multiple strategies have been used to restrict host innate immune responses by HSV-1 to facilitate its infection in host cells. The adaptive immunity of the host plays an important role in inhibiting HSV-1 infections. The activation and regulation of T cells are the important aspects of the adaptive immunity. They play a crucial role in host-mediated immunity and are important for clearing HSV-1. In this review, we examine the findings on T cell immune responses during HSV-1 infection, which hold promise in the design of new vaccine candidates for HSV-1.
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