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Huang HI, Chio CC, Lin JY, Chou CJ, Lin CC, Chen SH, Yu LS. EV-A71 induced IL-1β production in THP-1 macrophages is dependent on NLRP3, RIG-I, and TLR3. Sci Rep 2022; 12:21425. [PMID: 36503883 PMCID: PMC9741760 DOI: 10.1038/s41598-022-25458-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
Enterovirus A71 (EV-A71) is an emerging enterovirus that can cause neurological complications. Enhanced serum IL-1β levels were observed in EV-A71 patients with severe neurological symptoms. However, the roles of sensors in enterovirus-induced IL-1β production are unclear. In this study, we identified that pattern recognition receptors, including RIG-I, TLR3, and TLR8, are implicated in EV-A71-triggered IL-1β release in human macrophages. EV-A71 infection results in caspase-1 and caspase-8, which act as regulators of EV-A71-induced NLRP3 and RIG-I inflammasome activation. Moreover, knockdown of the expression of TLR3 and TLR8 decreased the released IL-1β in an NLRP3-dependent manner. Since TLR3 and TLR8 ligands promote NLRP3 inflammasome activation via caspase-8, the alternative pathway may be involved. In summary, these results indicate that activation of the NLRP3 and RIG-I inflammasomes in EV-A71-infected macrophages is mediated by caspase-1 and caspase-8 and affected by TLRs, including TLR3 and TLR8.
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Affiliation(s)
- Hsing-I Huang
- grid.145695.a0000 0004 1798 0922Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan ,grid.145695.a0000 0004 1798 0922Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan ,grid.145695.a0000 0004 1798 0922Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan ,grid.454211.70000 0004 1756 999XDepartment of Pediatrics, Linkou Chang Gung Memorial Hospital, Kwei-Shan, Tao-Yuan, Taiwan
| | - Chi-Chong Chio
- grid.145695.a0000 0004 1798 0922Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan ,grid.145695.a0000 0004 1798 0922Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan ,grid.145695.a0000 0004 1798 0922Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Jhao-Yin Lin
- grid.145695.a0000 0004 1798 0922Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan ,grid.145695.a0000 0004 1798 0922Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Chia-Jung Chou
- grid.145695.a0000 0004 1798 0922Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Chia-Chen Lin
- grid.145695.a0000 0004 1798 0922Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Shih-Hsiang Chen
- grid.454211.70000 0004 1756 999XDivision of Pediatric Hematology/Oncology, Linkou Chang Gung Memorial Hospital, Kwei-Shan, Tao-Yuan, Taiwan ,grid.145695.a0000 0004 1798 0922College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Liang-Sheng Yu
- grid.145695.a0000 0004 1798 0922Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
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Auriti C, De Rose DU, Santisi A, Martini L, Piersigilli F, Bersani I, Ronchetti MP, Caforio L. Pregnancy and viral infections: Mechanisms of fetal damage, diagnosis and prevention of neonatal adverse outcomes from cytomegalovirus to SARS-CoV-2 and Zika virus. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166198. [PMID: 34118406 PMCID: PMC8883330 DOI: 10.1016/j.bbadis.2021.166198] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/07/2021] [Accepted: 06/03/2021] [Indexed: 02/07/2023]
Abstract
Some maternal infections, contracted before or during pregnancy, can be transmitted to the fetus, during gestation (congenital infection), during labor and childbirth (perinatal infection) and through breastfeeding (postnatal infection). The agents responsible for these infections can be viruses, bacteria, protozoa, fungi. Among the viruses most frequently responsible for congenital infections are Cytomegalovirus (CMV), Herpes simplex 1–2, Herpes virus 6, Varicella zoster. Moreover Hepatitis B and C virus, HIV, Parvovirus B19 and non-polio Enteroviruses when contracted during pregnancy may involve the fetus or newborn at birth. Recently, new viruses have emerged, SARS-Cov-2 and Zika virus, of which we do not yet fully know the characteristics and pathogenic power when contracted during pregnancy. Viral infections in pregnancy can damage the fetus (spontaneous abortion, fetal death, intrauterine growth retardation) or the newborn (congenital anomalies, organ diseases with sequelae of different severity). Some risk factors specifically influence the incidence of transmission to the fetus: the timing of the infection in pregnancy, the order of the infection, primary or reinfection or chronic, the duration of membrane rupture, type of delivery, socio-economic conditions and breastfeeding. Frequently infected neonates, symptomatic at birth, have worse outcomes than asymptomatic. Many asymptomatic babies develop long term neurosensory outcomes. The way in which the virus interacts with the maternal immune system, the maternal-fetal interface and the placenta explain these results and also the differences that are observed from time to time in the fetal‑neonatal outcomes of maternal infections. The maternal immune system undergoes functional adaptation during pregnancy, once thought as physiological immunosuppression. This adaptation, crucial for generating a balance between maternal immunity and fetus, is necessary to promote and support the pregnancy itself and the growth of the fetus. When this adaptation is upset by the viral infection, the balance is broken, and the infection can spread and lead to the adverse outcomes previously described. In this review we will describe the main viral harmful infections in pregnancy and the potential mechanisms of the damages on the fetus and newborn.
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Affiliation(s)
- Cinzia Auriti
- Neonatal Intensive Care Unit, Medical and Surgical Department of Fetus, Newborn and Infant - "Bambino Gesù" Children's Hospital IRCCS, Rome, Italy.
| | - Domenico Umberto De Rose
- Neonatal Intensive Care Unit, Medical and Surgical Department of Fetus, Newborn and Infant - "Bambino Gesù" Children's Hospital IRCCS, Rome, Italy.
| | - Alessandra Santisi
- Neonatal Intensive Care Unit, Medical and Surgical Department of Fetus, Newborn and Infant - "Bambino Gesù" Children's Hospital IRCCS, Rome, Italy.
| | - Ludovica Martini
- Neonatal Intensive Care Unit, Medical and Surgical Department of Fetus, Newborn and Infant - "Bambino Gesù" Children's Hospital IRCCS, Rome, Italy.
| | - Fiammetta Piersigilli
- Department of Neonatology, St-Luc University Hospital, Catholic University of Louvain, Brussels, Belgium.
| | - Iliana Bersani
- Neonatal Intensive Care Unit, Medical and Surgical Department of Fetus, Newborn and Infant - "Bambino Gesù" Children's Hospital IRCCS, Rome, Italy.
| | - Maria Paola Ronchetti
- Neonatal Intensive Care Unit, Medical and Surgical Department of Fetus, Newborn and Infant - "Bambino Gesù" Children's Hospital IRCCS, Rome, Italy.
| | - Leonardo Caforio
- Fetal and Perinatal Medicine and Surgery Unit, Medical and Surgical Department of Fetus, Newborn and Infant - "Bambino Gesù" Children's Hospital IRCCS, Rome, Italy.
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Non-Polio Enteroviruses from Acute Flaccid Paralysis Surveillance in Korea, 2012-2019. Viruses 2021; 13:v13030411. [PMID: 33807557 PMCID: PMC8001888 DOI: 10.3390/v13030411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/27/2021] [Accepted: 03/02/2021] [Indexed: 12/18/2022] Open
Abstract
The risk of polio importation and re-emergence persists since epidemic polio still occurs in some countries, and the resurgence of polio occurring almost 20 years after polio eradication was declared in Asia has been reported. We analyzed the results of acute flaccid paralysis (AFP) surveillance in Korea to assess the quality of AFP surveillance and understand the etiology of non-polio enterovirus (NPEV)-associated central nervous system diseases in a polio-free area. We investigated 637 AFP patients under 15 years of age whose cases were confirmed during 2012–2019 by virus isolation, real-time reverse transcription polymerase chain reaction, and VP1 gene sequencing. Among the 637 AFP cases, NPEV was detected in 213 (33.4%) patients, with the majority observed in EV-A71, with 54.9% of NPEV positives. EV-A71 has been shown to play a role as a major causative agent in most neurological diseases except for Guillain-Barré syndrome (GBS), acute disseminated encephalomyelitis (ADEM), and meningitis. This study provides information on the AFP surveillance situation in Korea and highlights the polio eradication stage in the monitoring and characterization of NPEV against the outbreak of neurological infectious diseases such as polio.
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Peters CE, Carette JE. Return of the Neurotropic Enteroviruses: Co-Opting Cellular Pathways for Infection. Viruses 2021; 13:v13020166. [PMID: 33499355 PMCID: PMC7911124 DOI: 10.3390/v13020166] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/14/2021] [Accepted: 01/19/2021] [Indexed: 02/06/2023] Open
Abstract
Enteroviruses are among the most common human infectious agents. While infections are often mild, the severe neuropathogenesis associated with recent outbreaks of emerging non-polio enteroviruses, such as EV-A71 and EV-D68, highlights their continuing threat to public health. In recent years, our understanding of how non-polio enteroviruses co-opt cellular pathways has greatly increased, revealing intricate host-virus relationships. In this review, we focus on newly identified mechanisms by which enteroviruses hijack the cellular machinery to promote their replication and spread, and address their potential for the development of host-directed therapeutics. Specifically, we discuss newly identified cellular receptors and their contribution to neurotropism and spread, host factors required for viral entry and replication, and recent insights into lipid acquisition and replication organelle biogenesis. The comprehensive knowledge of common cellular pathways required by enteroviruses could expose vulnerabilities amenable for host-directed therapeutics against a broad spectrum of enteroviruses. Since this will likely include newly arising strains, it will better prepare us for future epidemics. Moreover, identifying host proteins specific to neurovirulent strains may allow us to better understand factors contributing to the neurotropism of these viruses.
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