51
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Imbeloni AA, de Alcantara BN, Coutinho LN, de Azevedo Scalercio SRR, Carneiro LA, Oliveira KG, Filho AJM, de Brito Simith Durans D, da Silva WB, Nunes BTD, Casseb LMN, Chiang JO, de Carvalho CAM, Machado MB, Quaresma JAS, de Almeida Medeiros DB, da Costa Vasconcelos PF. Prenatal disorders and congenital Zika syndrome in squirrel monkeys. Sci Rep 2021; 11:2698. [PMID: 33514824 PMCID: PMC7846595 DOI: 10.1038/s41598-021-82028-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Accepted: 01/06/2021] [Indexed: 12/31/2022] Open
Abstract
During the Zika virus (ZIKV) outbreak in Brazil (2015–2016), the clinical manifestations associated with its infection were complex and included miscarriage and congenital malformations, not previously described. In this study, we evaluated the prenatal conditions of pregnant female squirrel monkeys (Saimiri collinsi) infected during different gestational thirds (GTs) and assessed all clinical aspects, diagnostic imaging, viremia and the immune response. In our study, 75% of the infected animals in the 1st GT group had significant clinical manifestations, such as miscarriage and prolonged viremia associated with a late immune response. Consequently, their neonates showed fetal neuropathology, such as cerebral hemorrhage, lissencephaly or malformations of the brain grooves, ventriculomegaly, and craniofacial malformations. Thus, our study demonstrated the relevance of pregnant squirrel monkeys as a model for the study of ZIKV infection in neonates due to the broad clinical manifestations presented, including the typical congenital Zika syndrome manifestations described in humans.
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Affiliation(s)
- Aline Amaral Imbeloni
- National Primate Center, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil.,Post-Graduate Program in Virology, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil
| | | | | | | | - Liliane Almeida Carneiro
- National Primate Center, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil
| | - Karol Guimarães Oliveira
- National Primate Center, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil
| | - Arnaldo Jorge Martins Filho
- Department of Pathology, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil
| | - Darlene de Brito Simith Durans
- Department of Arbovirology and Hemorrhagic Fever, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil
| | | | - Bruno Tardelli Diniz Nunes
- Department of Arbovirology and Hemorrhagic Fever, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil
| | - Livia Medeiros Neves Casseb
- Department of Arbovirology and Hemorrhagic Fever, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil
| | - Jannifer Oliveira Chiang
- Department of Arbovirology and Hemorrhagic Fever, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil
| | | | - Mariana Borges Machado
- University Center of Para, Governador Jose Malcher Avenue, 485, Belem, Para, 66035-065, Brazil
| | - Juarez Antônio Simões Quaresma
- Department of Pathology, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil.,University of Pará State, Tv. Perebebuí-Marco, 2623, Belém, Para State, 66087-662, Brazil
| | - Daniele Barbosa de Almeida Medeiros
- Post-Graduate Program in Virology, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil. .,Department of Arbovirology and Hemorrhagic Fever, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil.
| | - Pedro Fernando da Costa Vasconcelos
- Post-Graduate Program in Virology, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil. .,Department of Arbovirology and Hemorrhagic Fever, Evandro Chagas Institute, Rodovia BR-316, km-07, Ananindeua, Para, 67030-000, Brazil. .,University of Pará State, Tv. Perebebuí-Marco, 2623, Belém, Para State, 66087-662, Brazil.
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52
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Embryonic Microglia Interact with Hypothalamic Radial Glia during Development and Upregulate the TAM Receptors MERTK and AXL following an Insult. Cell Rep 2021; 34:108587. [PMID: 33406432 DOI: 10.1016/j.celrep.2020.108587] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 09/23/2020] [Accepted: 12/10/2020] [Indexed: 02/07/2023] Open
Abstract
Despite a growing appreciation for microglial influences on the developing brain, the responsiveness of microglia to insults during gestation remains less well characterized, especially in the embryo when microglia themselves are still maturing. Here, we asked if fetal microglia could coordinate an innate immune response to an exogenous insult. Using time-lapse imaging, we showed that hypothalamic microglia actively surveyed their environment by near-constant "touching" of radial glia projections. However, following an insult (i.e., IUE or AAV transduction), this seemingly passive touching became more intimate and long lasting, ultimately resulting in the retraction of radial glial projections and degeneration into small pieces. Mechanistically, the TAM receptors MERTK and AXL were upregulated in microglia following the insult, and Annexin V treatment inhibited radial glia breakage and engulfment by microglia. These data demonstrate a remarkable responsiveness of embryonic microglia to insults during gestation, a critical window for neurodevelopment.
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53
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Chudnovets A, Liu J, Narasimhan H, Liu Y, Burd I. Role of Inflammation in Virus Pathogenesis during Pregnancy. J Virol 2020; 95:e01381-19. [PMID: 33115865 PMCID: PMC7944452 DOI: 10.1128/jvi.01381-19] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Viral infections during pregnancy lead to a spectrum of maternal and fetal outcomes, ranging from asymptomatic disease to more critical conditions presenting with severe maternal morbidity, stillbirth, preterm birth, intrauterine growth restriction, and fetal congenital anomalies, either apparent at birth or later in life. In this article, we review the pathogenesis of several viral infections that are particularly relevant in the context of pregnancy and intrauterine inflammation. Understanding the diverse mechanisms employed by viral pathogens as well as the repertoire of immune responses induced in the mother may help to establish novel therapeutic options to attenuate changes in the maternal-fetal interface and prevent adverse pregnancy outcomes.
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Affiliation(s)
- Anna Chudnovets
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jin Liu
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Harish Narasimhan
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Yang Liu
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Irina Burd
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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54
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Nunes BTD, Fontes-Garfias CR, Shan C, Muruato AE, Nunes JGC, Burbano RMR, Vasconcelos PFC, Shi PY, Medeiros DBA. Zika structural genes determine the virulence of African and Asian lineages. Emerg Microbes Infect 2020; 9:1023-1033. [PMID: 32419649 PMCID: PMC8284969 DOI: 10.1080/22221751.2020.1753583] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The Asian lineage of Zika virus (ZIKV) is responsible for the recent epidemics in the Americas and severe disease, whereas the African lineage of ZIKV has not been reported to cause epidemics or severe disease. We constructed a cDNA infectious clone (IC) of an African ZIKV strain, which, together with our previously developed Asian ZIKV strain IC, allowed us to engineer chimeric viruses by swapping the structural and non-structural genes between the two lineages. Recombinant parental and chimeric viruses were analyzed in A129 and newborn CD1 mouse models. In the A129 mice, the African strain developed higher viremia, organ viral loading, and mortality rate. In CD1 mice, the African strain exhibited a higher neurovirulence than the Asian strain. A chimeric virus containing the structural genes from the African strain is more virulent than the Asian strain, whereas a chimeric virus containing the non-structural genes from the African strain exhibited a virulence comparable to the Asian strain. These results suggest that (i) African strain is more virulent than Asian strain and (ii) viral structural genes primarily determine the virulence difference between the two lineages in mouse models. Other factors may contribute to the discrepancy between the mouse and epidemic results.
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Affiliation(s)
- Bruno T D Nunes
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ministry of Health, Ananindeua, Brazil.,Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Health Sciences Institute, Belem, Brazil
| | | | - Chao Shan
- Department of Biochemistry & Molecular Biology, Galveston, TX, USA
| | - Antonio E Muruato
- Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Department of Microbiology & Immunology, Galveston, TX, USA
| | - Jannyce G C Nunes
- Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Health Sciences Institute, Belem, Brazil
| | - Rommel M R Burbano
- Health Sciences Institute, Belem, Brazil.,Biological Sciences Institute - ICS, Federal University of Pará, Belem, Brazil
| | - Pedro F C Vasconcelos
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ministry of Health, Ananindeua, Brazil.,Department of Pathology, Pará State University Belém, Brazil
| | - Pei-Yong Shi
- Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Institute for Human Infections & Immunity, Galveston, TX, USA.,Institute for Translational Science, Galveston, TX, USA.,Sealy Institute of Vaccine Sciences, Galveston, TX, USA.,Sealy Center for Structural Biology & Molecular Biophysics, Texas Medical Branch, Galveston, TX, USA
| | - Daniele B A Medeiros
- Department of Arbovirology and Hemorrhagic Fevers, Evandro Chagas Institute, Ministry of Health, Ananindeua, Brazil.,Department of Biochemistry & Molecular Biology, Galveston, TX, USA.,Post Graduation Program in Virology, Evandro Chagas Institute Ministry of Health, Ananindeua, Brazil.,Health Sciences Institute, Belem, Brazil
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55
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Lemos D, Stuart JB, Louie W, Singapuri A, Ramírez AL, Watanabe J, Usachenko J, Keesler RI, Sanchez-San Martin C, Li T, Martyn C, Oliveira G, Saraf S, Grubaugh ND, Andersen KG, Thissen J, Allen J, Borucki M, Tsetsarkin KA, Pletnev AG, Chiu CY, Van Rompay KKA, Coffey LL. Two Sides of a Coin: a Zika Virus Mutation Selected in Pregnant Rhesus Macaques Promotes Fetal Infection in Mice but at a Cost of Reduced Fitness in Nonpregnant Macaques and Diminished Transmissibility by Vectors. J Virol 2020; 94:e01605-20. [PMID: 32999034 PMCID: PMC7925200 DOI: 10.1128/jvi.01605-20] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 09/24/2020] [Indexed: 01/05/2023] Open
Abstract
Although fetal death is now understood to be a severe outcome of congenital Zika syndrome, the role of viral genetics is still unclear. We sequenced Zika virus (ZIKV) from a rhesus macaque fetus that died after inoculation and identified a single intrahost substitution, M1404I, in the ZIKV polyprotein, located in nonstructural protein 2B (NS2B). Targeted sequencing flanking position 1404 in 9 additional macaque mothers and their fetuses identified M1404I at a subconsensus frequency in the majority (5 of 9, 56%) of animals and some of their fetuses. Despite its repeated presence in pregnant macaques, M1404I has occurred rarely in humans since 2015. Since the primary ZIKV transmission cycle is human-mosquito-human, mutations in one host must be retained in the alternate host to be perpetuated. We hypothesized that ZIKV I1404 increases viral fitness in nonpregnant macaques and pregnant mice but is less efficiently transmitted by vectors, explaining its low frequency in humans during outbreaks. By examining competitive fitness relative to that of ZIKV M1404, we observed that ZIKV I1404 produced lower viremias in nonpregnant macaques and was a weaker competitor in tissues. In pregnant wild-type mice, ZIKV I1404 increased the magnitude and rate of placental infection and conferred fetal infection, in contrast to ZIKV M1404, which was not detected in fetuses. Although infection and dissemination rates were not different, Aedes aegypti mosquitoes transmitted ZIKV I1404 more poorly than ZIKV M1404. Our data highlight the complexity of arbovirus mutation-fitness dynamics and suggest that intrahost ZIKV mutations capable of augmenting fitness in pregnant vertebrates may not necessarily spread efficiently via mosquitoes during epidemics.IMPORTANCE Although Zika virus infection of pregnant women can result in congenital Zika syndrome, the factors that cause the syndrome in some but not all infected mothers are still unclear. We identified a mutation that was present in some ZIKV genomes in experimentally inoculated pregnant rhesus macaques and their fetuses. Although we did not find an association between the presence of the mutation and fetal death, we performed additional studies with ZIKV with the mutation in nonpregnant macaques, pregnant mice, and mosquitoes. We observed that the mutation increased the ability of the virus to infect mouse fetuses but decreased its capacity to produce high levels of virus in the blood of nonpregnant macaques and to be transmitted by mosquitoes. This study shows that mutations in mosquito-borne viruses like ZIKV that increase fitness in pregnant vertebrates may not spread in outbreaks when they compromise transmission via mosquitoes and fitness in nonpregnant hosts.
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Affiliation(s)
- Danilo Lemos
- University of California, Davis, School of Veterinary Medicine, Department of Pathology, Microbiology and Immunology, Davis, California, USA
| | - Jackson B Stuart
- University of California, Davis, School of Veterinary Medicine, Department of Pathology, Microbiology and Immunology, Davis, California, USA
| | - William Louie
- University of California, Davis, School of Veterinary Medicine, Department of Pathology, Microbiology and Immunology, Davis, California, USA
| | - Anil Singapuri
- University of California, Davis, School of Veterinary Medicine, Department of Pathology, Microbiology and Immunology, Davis, California, USA
| | - Ana L Ramírez
- University of California, Davis, School of Veterinary Medicine, Department of Pathology, Microbiology and Immunology, Davis, California, USA
| | - Jennifer Watanabe
- University of California, Davis, California National Primate Research Center, Davis, California, USA
| | - Jodie Usachenko
- University of California, Davis, California National Primate Research Center, Davis, California, USA
| | - Rebekah I Keesler
- University of California, Davis, California National Primate Research Center, Davis, California, USA
| | - Claudia Sanchez-San Martin
- University of California, San Francisco, Department of Laboratory Medicine, San Francisco, California, USA
| | - Tony Li
- University of California, San Francisco, Department of Laboratory Medicine, San Francisco, California, USA
| | - Calla Martyn
- University of California, San Francisco, Department of Laboratory Medicine, San Francisco, California, USA
| | - Glenn Oliveira
- The Scripps Research Institute, San Diego, California, USA
| | - Sharada Saraf
- The Scripps Research Institute, San Diego, California, USA
| | - Nathan D Grubaugh
- The Scripps Research Institute, San Diego, California, USA
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, Connecticut, USA
| | | | - James Thissen
- Lawrence Livermore National Laboratory, Livermore, California, USA
| | - Jonathan Allen
- Lawrence Livermore National Laboratory, Livermore, California, USA
| | - Monica Borucki
- Lawrence Livermore National Laboratory, Livermore, California, USA
| | - Konstantin A Tsetsarkin
- Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Alexander G Pletnev
- Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Charles Y Chiu
- University of California, San Francisco, Department of Laboratory Medicine, San Francisco, California, USA
| | - Koen K A Van Rompay
- University of California, Davis, California National Primate Research Center, Davis, California, USA
| | - Lark L Coffey
- University of California, Davis, School of Veterinary Medicine, Department of Pathology, Microbiology and Immunology, Davis, California, USA
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56
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Animal models of congenital zika syndrome provide mechanistic insight into viral pathogenesis during pregnancy. PLoS Negl Trop Dis 2020; 14:e0008707. [PMID: 33091001 PMCID: PMC7580937 DOI: 10.1371/journal.pntd.0008707] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In utero Zika virus (ZIKV; family Flaviviridae) infection causes a distinct pattern of birth defects and disabilities in the developing fetus and neonate that has been termed congenital zika syndrome (CZS). Over 8,000 children were affected by the 2016 to 2017 ZIKV outbreak in the Americas, many of whom developed CZS as a result of in utero exposure. To date, there is no consensus about how ZIKV causes CZS; animal models, however, are providing mechanistic insights. Using nonhuman primates, immunocompromised mice, immunocompetent mice, and other animal models (e.g., pigs, sheep, guinea pigs, and hamsters), studies are showing that maternal immunological responses, placental infection and inflammation, as well as viral genetic factors play significant roles in predicting the downstream consequences of in utero ZIKV infection on the development of CZS in offspring. There are thousands of children suffering from adverse consequences of CZS. Therefore, the animal models developed to study ZIKV-induced adverse outcomes in offspring could provide mechanistic insights into how other viruses, including influenza and hepatitis C viruses, impact placental viability and fetal growth to cause long-term adverse outcomes in an effort to identify therapeutic treatments.
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57
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Li S, Zhu A, Ren K, Li S, Chen L. DEFA1B inhibits ZIKV replication and retards cell cycle progression through interaction with ORC1. Life Sci 2020; 263:118564. [PMID: 33075374 PMCID: PMC7567675 DOI: 10.1016/j.lfs.2020.118564] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/22/2020] [Accepted: 10/01/2020] [Indexed: 12/19/2022]
Abstract
Aims Zika virus (ZIKV) infection causes a public health concern because of its potential association with the development of microcephaly. During viral infections, the host innate immune response is mounted quickly to produce some endogenous functional molecules to limit virus replication and spread. Exosomes contain molecules from their cell of origin following virus infection and can enter recipient cells for intercellular communication. Here, we aim to clarify whether ZIKV-induced exosomes can regulate viral pathogenicity by transferring specific RNAs. Main methods In this study, exosomes were isolated from the supernatants of A549 cells with or without ZIKV infection. Human transcriptome array (HTA) was performed to analyze the profiling of RNAs wrapped in exosomes. Then qPCR, western blotting and ELISA were used to determine ZIKV replication. CCK-8 and flow cytometry were used to test the cell proliferation and cell cycles. Co-culture assay was used to analyze the effect of exosomes on the cell cycles of recipient cells. Key findings Through human transcriptome array (HTA) we found the defensin alpha 1B (DEFA1B) expression was significantly increased within exosomes isolated from ZIKV infected A549 cells. Additionally, we found that the extracellular DEFA1B exerts significant anti-ZIKV activity, mainly before ZIKV entering host cells. Interestingly, up-regulated DEFA1B retards the cell cycle of host cells. Further studies demonstrated that DEFA1B interacted with the origin recognition complex 1 (ORC1) which is required to initiate DNA replication during the cell cycle and increased DEFA1B expression decreased the ORC1 level in the cell nuclei. Accordingly, DEFA1B-containing exosomes can be internalized by the recipient cells to retard their cell cycles. Significance Together, our results demonstrated that the anti-ZIKV activity of DEFA1B can be mediated by exosomes, and DEFA1B interacts with ORC1 to retard cell cycles. Our study provides a novel concept that DEFA1B not only acts as an antiviral molecule during ZIKV infection but also may correlate with cell proliferation by retarding the progression of cell cycles.
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Affiliation(s)
- Shuang Li
- Provincial Key Laboratory for Transfusion-Transmitted Infectious Diseases, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, Sichuan 610052, China.
| | - Anjing Zhu
- Provincial Key Laboratory for Transfusion-Transmitted Infectious Diseases, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, Sichuan 610052, China
| | - Kai Ren
- Provincial Key Laboratory for Transfusion-Transmitted Infectious Diseases, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, Sichuan 610052, China
| | - Shilin Li
- Provincial Key Laboratory for Transfusion-Transmitted Infectious Diseases, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, Sichuan 610052, China
| | - Limin Chen
- Provincial Key Laboratory for Transfusion-Transmitted Infectious Diseases, Institute of Blood Transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, Sichuan 610052, China; Toronto General Research Institute, University of Toronto, ON M5G 1L6, Canada.
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58
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Liang B, Guida JP, Costa Do Nascimento ML, Mysorekar IU. Host and viral mechanisms of congenital Zika syndrome. Virulence 2020; 10:768-775. [PMID: 31451049 PMCID: PMC6735503 DOI: 10.1080/21505594.2019.1656503] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In 2015–2016, in the Americas, and especially in northeast Brazil, a significant number of cases of microcephaly and other congenital brain abnormalities were linked with an outbreak of Zika virus (ZIKV) infection in pregnant women. While maternal symptoms of ZIKV are generally mild and self-limiting, clinical presentation in fetuses and newborns infected is extensive and includes microcephaly, decreased cortical development, atrophy and hypoplasia of the cerebellum and cerebellar vermis, arthrogryposis, and polyhydramnios. The term congenital ZIKV syndrome (CZS) was introduced to describe the range of findings associated with maternal-fetal ZIKV transmission. ZIKV is primarily transmitted by Aedes aegypti mosquitoes, however non-vector-dependent routes are also possible. Mechanisms of maternal-fetal transmission remain unknown, and the trans-placental route has been extensively studied in animal models and in human samples. The aim of this review was to summarize recent studies that helped to elucidate the mechanism of CZS in animal models and observational studies. There are still challenges in the diagnosis and prevention of CZS in humans, due to the large gap that remains in translating ZIKV research to clinical practice. Translational research linking governments, local health workers, scientists and industry is fundamental to improve care for mothers and children.
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Affiliation(s)
- Brooke Liang
- Department of Obstetrics and Gynecology, Washington University School of Medicine , St. Louis , MO , USA
| | - José Paulo Guida
- Department of Obstetrics and Gynecology, School of Medical Sciences, University of Campinas , Campinas , Brazil
| | | | - Indira U Mysorekar
- Department of Obstetrics and Gynecology, Washington University School of Medicine , St. Louis , MO , USA.,Department of Pathology and Immunology, Washington University School of Medicine , St. Louis , MO , USA.,Center for Reproductive Health Sciences, Washington University School of Medicine , St. Louis , MO , USA
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59
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Xu P, Shan C, Dunn TJ, Xie X, Xia H, Gao J, Allende Labastida J, Zou J, Villarreal PP, Schlagal CR, Yu Y, Vargas G, Rossi SL, Vasilakis N, Shi PY, Weaver SC, Wu P. Role of microglia in the dissemination of Zika virus from mother to fetal brain. PLoS Negl Trop Dis 2020; 14:e0008413. [PMID: 32628667 PMCID: PMC7365479 DOI: 10.1371/journal.pntd.0008413] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 07/16/2020] [Accepted: 05/22/2020] [Indexed: 12/17/2022] Open
Abstract
Global Zika virus (ZIKV) outbreaks and their link to microcephaly have raised major public health concerns. However, the mechanism of maternal-fetal transmission remains largely unknown. In this study, we determined the role of yolk sac (YS) microglial progenitors in a mouse model of ZIKV vertical transmission. We found that embryonic (E) days 6.5-E8.5 were a critical window for ZIKV infection that resulted in fetal demise and microcephaly, and YS microglial progenitors were susceptible to ZIKV infection. Ablation of YS microglial progenitors significantly reduced the viral load in both the YS and the embryonic brain. Taken together, these results support the hypothesis that YS microglial progenitors serve as “Trojan horses,” contributing to ZIKV fetal brain dissemination and congenital brain defects. ZIKV is more likely to cause fetal demise and brain malformations when the mother is infected at an early stage of pregnancy, which is the critical time window when a special type of immune cells called microglia appear in the YS and migrate to the fetal brain. YS-derived microglia are susceptible to ZIKV infection and can act as “Trojan horses” to bring ZIKV from the mother to the fetal brain.
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Affiliation(s)
- Pei Xu
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Chao Shan
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Tiffany J. Dunn
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Xuping Xie
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Hongjie Xia
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Junling Gao
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Javier Allende Labastida
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Jing Zou
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Paula P. Villarreal
- Center for Biomedical Engineering, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Caitlin R. Schlagal
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Yongjia Yu
- Department of Radiology and Oncology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Gracie Vargas
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
- Center for Biomedical Engineering, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Shannan L. Rossi
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, United States of America
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Nikolaos Vasilakis
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, United States of America
- Department of Pathology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas, United States of America
- World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Pei-Yong Shi
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - Scott C. Weaver
- Institute for Human Infections and Immunity, University of Texas Medical Branch, Galveston, Texas, United States of America
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, United States of America
- Center for Biodefense and Emerging Infectious Diseases, University of Texas Medical Branch, Galveston, Texas, United States of America
- World Reference Center for Emerging Viruses and Arboviruses, University of Texas Medical Branch, Galveston, Texas, United States of America
- * E-mail: (SCW); (PW)
| | - Ping Wu
- Department of Neuroscience, Cell Biology and Anatomy, University of Texas Medical Branch, Galveston, Texas, United States of America
- * E-mail: (SCW); (PW)
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Peli1 signaling blockade attenuates congenital zika syndrome. PLoS Pathog 2020; 16:e1008538. [PMID: 32544190 PMCID: PMC7297310 DOI: 10.1371/journal.ppat.1008538] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 04/13/2020] [Indexed: 12/16/2022] Open
Abstract
Zika virus (ZIKV) infects pregnant women and causes devastating congenital zika syndrome (CZS). How the virus is vertically transmitted to the fetus and induces neuronal loss remains unclear. We previously reported that Pellino (Peli)1, an E3 ubiquitin ligase, promotes p38MAPK activation in microglia and induction of lethal encephalitis by facilitating the replication of West Nile virus (WNV), a closely related flavivirus. Here, we found that Peli1 expression was induced on ZIKV-infected human monocytic cells, peripheral blood mononuclear cells, human first-trimester placental trophoblasts, and neural stem cell (hNSC)s. Peli1 mediates ZIKV cell attachment, entry and viral translation and its expression is confined to the endoplasmic reticulum. Moreover, Peli1 mediated inflammatory cytokine and chemokine responses and induced cell death in placental trophoblasts and hNSCs. ZIKV-infected pregnant mice lacking Peli1 signaling had reduced placental inflammation and tissue damage, which resulted in attenuated congenital abnormalities. Smaducin-6, a membrane-tethered Smad6-derived peptide, blocked Peli1-mediated NF-κB activation but did not have direct effects on ZIKV infection. Smaducin-6 reduced inflammatory responses and cell death in placental trophoblasts and hNSCs, and diminished placental inflammation and damage, leading to attenuated congenital malformations in mice. Collectively, our results reveal a novel role of Peli1 in flavivirus pathogenesis and suggest that Peli1 promotes ZIKV vertical transmission and neuronal loss by mediating inflammatory cytokine responses and induction of cell death. Our results also identify Smaducin-6 as a potential therapeutic candidate for treatment of CZS. We previously reported that Pellino (Peli)1, an E3 ubiquitin ligase mediates p38MAPK activation in microglia and induces lethal encephalitis by facilitating replication of a mosquito -borne flavivirus, West Nile virus (WNV). Zika virus (ZIKV), a closely related flavivirus, causes devastating congenital zika syndrome (CZS) in pregnant women. How ZIKV is vertically transmitted to the fetus and induces neuronal loss remains unclear. Here, we found that Peli1 expression was enhanced in human monocytic cells, peripheral blood mononuclear cells, first-trimester placental trophoblasts and neural stem cell (hNSC)s following ZIKV infection. Peli1 expression colocalized with the endoplasmic reticulum and double-stranded RNA in ZIKV-infected cells and was required for ZIKV cell attachment and replication. Peli1 knockdown in placental trophoblasts inhibited ZIKV replication and decreased inflammatory cytokine responses and cell death. ZIKV-infected pregnant mice lacking Peli1 signaling showed reduced placental inflammation and tissue damage, which resulted in attenuated congenital abnormalities. Furthermore, Smaducin-6, a membrane-tethered Smad6-derived peptide, blocked Peli1-mediated NF-κB activation, but not ZIKV replication. Smaducin 6 inhibited Peli1-mediated inflammatory cytokine responses and cell death in placental trophoblasts and hNSCs, and attenuated congenital malformations in mice. Collectively, our results reveal a novel role of Peli1 in flavivirus pathogenesis and suggest that Peli1 promotes ZIKV vertical transmission and neuronal loss by mediating inflammatory cytokine responses and induction of cell death.
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Chudnovets A, Lei J, Na Q, Dong J, Narasimhan H, Klein SL, Burd I. Dose-dependent structural and immunological changes in the placenta and fetal brain in response to systemic inflammation during pregnancy. Am J Reprod Immunol 2020; 84:e13248. [PMID: 32306461 DOI: 10.1111/aji.13248] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/22/2020] [Accepted: 04/10/2020] [Indexed: 12/12/2022] Open
Abstract
PROBLEM Systemic maternal inflammation is associated with adverse neonatal sequelae. We tested the hypothesis that IL-1β is a key inflammatory regulator of adverse pregnancy outcomes. METHOD OF STUDY Pregnant mice were treated with intraperitoneal injections of IL-1β (0, 0.1, 0.5, or 1 μg) from embryonic day (E)14 to E17. Placenta and fetal brains were harvested and analyzed for morphologic changes and IL-1β signaling markers. RESULTS As compared with non-treated dams, maternal injections with IL-1β resulted in increased p-NF-κB and caspase-1 in placentas and fetal brains, but not consistently in spleens, suggesting induction of intrinsic IL-1β production. These findings were confirmed by increased levels of IL-1β in the placentas of the IL-1β-treated dams. Systemic treatment of dams with IL-1β suppressed Stat1 signaling. Maternal inflammation caused by IL-1β treatment reduced fetal viability to 80.6% and 58.9%, in dams treated with either 0.5 or 1 μg of IL-1β, respectively. In the placentas, there was an IL-1β dose-dependent distortion of the labyrinth structure, decreased numbers of mononuclear trophoblast giant cells, and reduced proportions of endothelial cells as compared to placentas from control dams. In fetal brains collected at E17, there was an IL-1β dose-dependent reduction in cortical neuronal morphology. CONCLUSION This work demonstrates that systemic IL-1β injection causes dose-dependent structural and functional changes in the placenta and fetal brain.
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Affiliation(s)
- Anna Chudnovets
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jun Lei
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Quan Na
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jie Dong
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Harish Narasimhan
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Sabra L Klein
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Irina Burd
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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Sun J, Du S, Zheng Z, Cheng G, Jin X. Defeat Dengue and Zika Viruses With a One-Two Punch of Vaccine and Vector Blockade. Front Microbiol 2020; 11:362. [PMID: 32265852 PMCID: PMC7100368 DOI: 10.3389/fmicb.2020.00362] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 02/18/2020] [Indexed: 01/07/2023] Open
Abstract
Dengue virus (DENV) and Zika virus (ZIKV) are two mosquito-borne flaviviruses afflicting nearly half of the world population. Human infection by these viruses can either be asymptomatic or manifest as clinical diseases from mild to severe. Despite more cases are presented as self-limiting febrile illness, severe dengue disease can be manifested as hemorrhagic fever and hemorrhagic shock syndrome, and ZIKV infection has been linked to increased incidence of peripheral neuropathy Guillain-Barre syndrome and central neural disease such as microcephaly. The current prevention and treatment of these infectious diseases are either non-satisfactory or entirely lacking. Because DENV and ZIKV have much similarities in genomic and structural features, almost identical mode of mosquito-mediated transmission, and probably the same pattern of host innate and adaptive immunity toward them, it is reasonable and often desirable to investigate these two viruses side-by-side, and thereby devise common countermeasures against both. Here, we review the existing knowledge on DENV and ZIKV regarding epidemiology, molecular virology, protective immunity and vaccine development, discuss recent new discoveries on the functions of flavivirus NS1 protein in viral pathogenesis and transmission, and propose a one-two punch strategy using vaccine and vector blockade to overcome antibody-dependent enhancement and defeat Dengue and Zika viruses.
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Affiliation(s)
- Jin Sun
- Viral Disease and Vaccine Translational Research Unit, CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Senyan Du
- Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua University, Beijing, China
| | - Zhihang Zheng
- Viral Disease and Vaccine Translational Research Unit, CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China,Institut Pasteur of Shanghai, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Gong Cheng
- Tsinghua-Peking Center for Life Sciences, School of Medicine, Tsinghua University, Beijing, China
| | - Xia Jin
- Viral Disease and Vaccine Translational Research Unit, CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China,Shanghai Public Health Clinical Center, Fudan University, Shanghai, China,*Correspondence: Xia Jin, ;
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63
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Teixeira FME, Pietrobon AJ, Oliveira LDM, Oliveira LMDS, Sato MN. Maternal-Fetal Interplay in Zika Virus Infection and Adverse Perinatal Outcomes. Front Immunol 2020; 11:175. [PMID: 32117303 PMCID: PMC7033814 DOI: 10.3389/fimmu.2020.00175] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 01/22/2020] [Indexed: 12/26/2022] Open
Abstract
During pregnancy, the organization of complex tolerance mechanisms occurs to assure non-rejection of the semiallogeneic fetus. Pregnancy is a period of vulnerability to some viral infections, mainly during the first and second trimesters, that may cause congenital damage to the fetus. Recently, Zika virus (ZIKV) infection has gained great notoriety due to the occurrence of congenital ZIKV syndrome, characterized by fetal microcephaly, which results from the ability of ZIKV to infect placental cells and neural precursors in the fetus. Importantly, in addition to the congenital effects, studies have shown that perinatal ZIKV infection causes a number of disorders, including maculopapular rash, conjunctivitis, and arthralgia. In this paper, we contextualize the immunological aspects involved in the maternal-fetal interface and vulnerability to ZIKV infection, especially the alterations resulting in perinatal outcomes. This highlights the need to develop protective maternal vaccine strategies or interventions that are capable of preventing fetal or even neonatal infection.
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Affiliation(s)
- Franciane Mouradian Emidio Teixeira
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, School of Medicine and Institute of Tropical Medicine of São Paulo, University of São Paulo, São Paulo, Brazil.,Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Anna Julia Pietrobon
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, School of Medicine and Institute of Tropical Medicine of São Paulo, University of São Paulo, São Paulo, Brazil.,Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Luana de Mendonça Oliveira
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, School of Medicine and Institute of Tropical Medicine of São Paulo, University of São Paulo, São Paulo, Brazil.,Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Luanda Mara da Silva Oliveira
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, School of Medicine and Institute of Tropical Medicine of São Paulo, University of São Paulo, São Paulo, Brazil
| | - Maria Notomi Sato
- Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, School of Medicine and Institute of Tropical Medicine of São Paulo, University of São Paulo, São Paulo, Brazil.,Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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A Porcine Model of Zika Virus Infection to Profile the In Utero Interferon Alpha Response. Methods Mol Biol 2020; 2142:181-195. [PMID: 32367368 DOI: 10.1007/978-1-0716-0581-3_15] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Pigs are highly relevant to model human in utero Zika virus (ZIKV) infection because both species have similar physiology, genetics, immunity, fetal brain development, and postnatal brain growth. The virus causes persistent in utero infection and replicates in the fetal brain, fetal membranes, and placenta. Subclinical persistent in utero infection in mid-gestation also increases interferon alpha (IFN-α) levels in fetal blood plasma and amniotic fluid. Moreover, we demonstrated altered IFN-α responses in porcine offspring affected with subclinical in utero ZIKV infection. Elevated levels of in utero type I interferons were suggested to play a role in fetal pathology. Thus, the porcine model may provide an understanding of ZIKV-induced immunopathology in fetuses and sequelae in offspring, which is important for the development of targeted interventions. Here, we describe surgery, ultrasound-guided in utero injection, postoperative monitoring, sampling, and cytokine testing protocols.
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Krubiner CB, Schwartz DA. Viral Hemorrhagic Fevers in Pregnant Women and the Vaccine Landscape: Comparisons Between Yellow Fever, Ebola, and Lassa Fever. CURRENT TROPICAL MEDICINE REPORTS 2019. [DOI: 10.1007/s40475-019-00194-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Udenze D, Trus I, Berube N, Gerdts V, Karniychuk U. The African strain of Zika virus causes more severe in utero infection than Asian strain in a porcine fetal transmission model. Emerg Microbes Infect 2019; 8:1098-1107. [PMID: 31340725 PMCID: PMC6711198 DOI: 10.1080/22221751.2019.1644967] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Studies in mice showed that African Zika virus (ZIKV) strains cause more damage in embryos. These studies, however, were limited to the mouse-adapted African MR766 strain or infection at early gestation. Here, we compared infection of Asian and African strains in the fetal pig model at midgestation. Both strains caused fetal infection. ZIKV was detected in placenta, amniotic membrane, amniotic fluid, fetal blood, and brain. The African strain produced more vigorous in utero infection as represented by more efficient virus transmission between siblings, and higher viral loads in fetal organs and membranes. Infection with both strains was associated with reduced fetal brain weight and increased number of placental CD163-positive cells, as well as elevated in utero interferon alpha and cortisol levels. This is the first large animal model study which demonstrated that African strain of ZIKV, with no passage history in experimental animals, can cause persistent infection in fetuses and fetal membranes at midgestation. Our studies also suggest that similar to Asian strains, ZIKV of African lineage might cause silent pathology which is difficult to identify in deceptively healthy fetuses. The findings emphasize the need for further studies to highlight the impact of ZIKV heterogeneity on infection outcomes during pregnancy.
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Affiliation(s)
- Daniel Udenze
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada.,b School of Public Health, University of Saskatchewan , Saskatoon , Canada
| | - Ivan Trus
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada
| | - Nathalie Berube
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada
| | - Volker Gerdts
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada.,c Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan , Saskatoon , Canada
| | - Uladzimir Karniychuk
- a Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan , Saskatoon , Canada.,b School of Public Health, University of Saskatchewan , Saskatoon , Canada.,c Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan , Saskatoon , Canada
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67
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Trus I, Udenze D, Cox B, Berube N, Nordquist RE, van der Staay FJ, Huang Y, Kobinger G, Safronetz D, Gerdts V, Karniychuk U. Subclinical in utero Zika virus infection is associated with interferon alpha sequelae and sex-specific molecular brain pathology in asymptomatic porcine offspring. PLoS Pathog 2019; 15:e1008038. [PMID: 31725819 PMCID: PMC6855438 DOI: 10.1371/journal.ppat.1008038] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 08/21/2019] [Indexed: 01/18/2023] Open
Abstract
Zika virus (ZIKV) infection during human pregnancy may lead to severe fetal pathology and debilitating impairments in offspring. However, the majority of infections are subclinical and not associated with evident birth defects. Potentially detrimental life-long health outcomes in asymptomatic offspring evoke high concerns. Thus, animal models addressing sequelae in offspring may provide valuable information. To induce subclinical infection, we inoculated selected porcine fetuses at the mid-stage of development. Inoculation resulted in trans-fetal virus spread and persistent infection in the placenta and fetal membranes for two months. Offspring did not show congenital Zika syndrome (e.g., microcephaly, brain calcifications, congenital clubfoot, arthrogryposis, seizures) or other visible birth defects. However, a month after birth, a portion of offspring exhibited excessive interferon alpha (IFN-α) levels in blood plasma in a regular environment. Most affected offspring also showed dramatic IFN-α shutdown during social stress providing the first evidence for the cumulative impact of prenatal ZIKV exposure and postnatal environmental insult. Other eleven cytokines tested before and after stress were not altered suggesting the specific IFN-α pathology. While brains from offspring did not have histopathology, lesions, and ZIKV, the whole genome expression analysis of the prefrontal cortex revealed profound sex-specific transcriptional changes that most probably was the result of subclinical in utero infection. RNA-seq analysis in the placenta persistently infected with ZIKV provided independent support for the sex-specific pattern of in utero-acquired transcriptional responses. Collectively, our results provide strong evidence that two hallmarks of fetal ZIKV infection, altered type I IFN response and molecular brain pathology can persist after birth in offspring in the absence of congenital Zika syndrome. A number of studies showed that Zika virus (ZIKV) can cause severe abnormalities in fetuses, e.g., brain lesions, and subsequently life-long developmental and cognitive impairment in children. However, the majority of infections in pregnant women are subclinical and are not associated with developmental abnormalities in fetuses and newborns. It is known that disruptions to the in utero environment during fetal development can program increased risks for disease in adulthood. For this reason, children affected in utero even by mild ZIKV infection can appear deceptively healthy at birth but develop immune dysfunction and brain abnormalities during postnatal development. Here, we used the porcine model of subclinical fetal ZIKV infection to determine health sequelae in offspring which did not show apparent signs of the disease. We demonstrated that subclinical fetal infection was associated with abnormal immunological responses in apparently healthy offspring under normal environmental conditions and during social stress. We also showed silent sex-specific brain pathology as represented by altered gene expression. Our study provides new insights into potential outcomes of subclinical in utero ZIKV infection. It also emphasizes that further attempts to better understand silent pathology and develop alleviative interventions in ZIKV-affected offspring should take into account interactions of host factors, like sex, and environmental insults, like social stress.
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Affiliation(s)
- Ivan Trus
- Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan, Saskatoon, Canada
| | - Daniel Udenze
- Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan, Saskatoon, Canada
- School of Public Health, University of Saskatchewan, Saskatoon, Canada
| | - Brian Cox
- Department of Physiology, Department of Obstetrics and Gynaecology, University of Toronto, Toronto, ON, Canada
| | - Nathalie Berube
- Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan, Saskatoon, Canada
| | - Rebecca E. Nordquist
- Behavior and Welfare Group, Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, CL, Netherlands
- Brain Center Rudolf Magnus, Utrecht University, Utrecht, Netherlands
| | - Franz Josef van der Staay
- Behavior and Welfare Group, Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, CL, Netherlands
| | | | | | - David Safronetz
- Canada National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB, Canada
| | - Volker Gerdts
- Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan, Saskatoon, Canada
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - Uladzimir Karniychuk
- Vaccine and Infectious Disease Organization-International Vaccine Centre (VIDO-InterVac), University of Saskatchewan, Saskatoon, Canada
- School of Public Health, University of Saskatchewan, Saskatoon, Canada
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
- * E-mail:
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Lee JY, Li S, Shin NE, Na Q, Dong J, Jia B, Jones-Beatty K, McLane MW, Ozen M, Lei J, Burd I. Melatonin for prevention of placental malperfusion and fetal compromise associated with intrauterine inflammation-induced oxidative stress in a mouse model. J Pineal Res 2019; 67:e12591. [PMID: 31231832 DOI: 10.1111/jpi.12591] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 01/01/2023]
Abstract
Melatonin has been shown to reduce oxidative stress and mitigate hypercoagulability. We hypothesized that maternally administered melatonin may reduce placental oxidative stress and hypercoagulability associated with exposure to intrauterine inflammation (IUI) and consequently improve fetoplacental blood flow and fetal sequelae. Mice were randomized to the following groups: control (C), melatonin (M), lipopolysaccharide (LPS; a model of IUI) (L), and LPS with melatonin (ML). The expression of antioxidant mediators in the placenta was significantly decreased, while that of pro-inflammatory mediators was significantly increased in L compared to C and ML. The systolic/diastolic ratio, resistance index, and pulsatility index in uterine artery (UtA) and umbilical artery (UA) were significantly increased in L compared with other groups when analyzed by Doppler ultrasonography. The expression of antioxidant mediators in the placenta was significantly decreased, while that of pro-inflammatory mediators was significantly increased in L compared to C and ML. Vascular endothelial damage and thrombi formation, as evidenced by fibrin deposits, were similarly increased in L compared to other groups. Maternal pretreatment with melatonin appears to modulate maternal placental malperfusion, fetal cardiovascular compromise, and fetal neuroinflammation induced by IUI through its antioxidant properties.
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Affiliation(s)
- Ji Yeon Lee
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Obstetrics and Gynecology, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Su Li
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Na E Shin
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Quan Na
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jie Dong
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Bei Jia
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kimberly Jones-Beatty
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Michael W McLane
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Maide Ozen
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jun Lei
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Irina Burd
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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69
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Suleman M, Novakovic P, Malgarin CM, Detmer SE, Harding JCS, MacPhee DJ. Spatiotemporal immunofluorescent evaluation of porcine reproductive and respiratory syndrome virus transmission across the maternal-fetal interface. Pathog Dis 2019; 76:5050373. [PMID: 29986005 DOI: 10.1093/femspd/fty060] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 07/06/2018] [Indexed: 12/12/2022] Open
Abstract
Porcine reproductive and respiratory syndrome virus (PRRSV) infection causes severe reproductive failure characterized by high fetal morbidity and mortality leading to substantial economic losses to the swine industry. Evaluation of spatiotemporal transmission of PRRSV at the maternal-fetal interface (MFI) is critical for understanding fetal infection. Localization of PRRSV-2 strain NVSL 97-7895 at different regions of the MFI in 20 pregnant gilts at 2, 5, 8, 12 and 14 days post-inoculation (dpi) were analyzed by immunofluorescence (IF). Samples of MFI were collected from 15 inoculated and 5 control gilts and transplacental PRRSV transmission assessed in randomly selected fetuses from each litter. Localization of NVSL 97-7895 antigen immunoreactivity in the MFI was focused in three major areas: endometrial connective tissues (ENDO), the feto-maternal junction (FMJ) and fetal placenta (PLC). NVSL 97-7895 was detected at the FMJ by 2 dpi. At 2, 5 and 8 dpi, NVSL 97-7895 was localized within the ENDO and FMJ, whereas at 12 and 14 dpi, it was mainly localized in the PLC. Using a novel IF strategy for counting and size sorting NVSL 97-7895 viral antigen in situ, results of this study indicate that non-cell-associated mechanisms are involved in PRRSV transmission across the MFI.
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Affiliation(s)
- M Suleman
- Department of Large Animal Clinical Sciences
| | - P Novakovic
- Department of Large Animal Clinical Sciences
| | | | | | | | - D J MacPhee
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, 52 Campus Dr, University of Saskatchewan, Saskatoon, SK, S7N 5B4, Canada
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Casazza RL, Lazear HM, Miner JJ. Protective and Pathogenic Effects of Interferon Signaling During Pregnancy. Viral Immunol 2019; 33:3-11. [PMID: 31545139 DOI: 10.1089/vim.2019.0076] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Immune regulation at the maternal-fetal interface is complex due to conflicting immunological objectives: protection of the fetus from maternal pathogens and prevention of immune-mediated rejection of the semiallogeneic fetus and placenta. Interferon (IFN) signaling plays an important role in restricting congenital infections as well as in the physiology of healthy pregnancies. In this review, we discuss the antiviral and pathogenic effects of type I IFN (IFN-α, IFN-β), type II IFN (IFN-γ), and type III IFN (IFN-λ) during pregnancy, with an emphasis on mouse and non-human primate models of congenital Zika virus infection. In the context of these animal model systems, we examine the role of IFN signaling during healthy pregnancy. Finally, we review mechanisms by which dysregulated type I IFN responses contribute to poor pregnancy outcomes in humans with autoimmune disease, including interferonopathies and systemic lupus erythematosus.
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Affiliation(s)
- Rebecca L Casazza
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Helen M Lazear
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jonathan J Miner
- Department of Medicine, Washington University School of Medicine, Saint Louis, Missouri.,Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri.,Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, Missouri
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71
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Pre- and peri-implantation Zika virus infection impairs fetal development by targeting trophectoderm cells. Nat Commun 2019; 10:4155. [PMID: 31519912 PMCID: PMC6744420 DOI: 10.1038/s41467-019-12063-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 08/19/2019] [Indexed: 12/23/2022] Open
Abstract
Zika virus (ZIKV) infection results in an increased risk of spontaneous abortion and poor intrauterine growth although the underlying mechanisms remain undetermined. Little is known about the impact of ZIKV infection during the earliest stages of pregnancy, at pre- and peri-implantation, because most current ZIKV pregnancy studies have focused on post-implantation stages. Here, we demonstrate that trophectoderm cells of pre-implantation human and mouse embryos can be infected with ZIKV, and propagate virus causing neural progenitor cell death. These findings are corroborated by the dose-dependent nature of ZIKV susceptibility of hESC-derived trophectoderm cells. Single blastocyst RNA-seq reveals key transcriptional changes upon ZIKV infection, including nervous system development, prior to commitment to the neural lineage. The pregnancy rate of mice is >50% lower in pre-implantation infection than infection at E4.5, demonstrating that pre-implantation ZIKV infection leads to miscarriage. Cumulatively, these data elucidate a previously unappreciated association of pre- and peri-implantation ZIKV infection and microcephaly.
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72
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Maness NJ, Schouest B, Singapuri A, Dennis M, Gilbert MH, Bohm RP, Schiro F, Aye PP, Baker K, Van Rompay KKA, Lackner AA, Bonaldo MC, Blair RV, Permar SR, Coffey LL, Panganiban AT, Magnani D. Postnatal Zika virus infection of nonhuman primate infants born to mothers infected with homologous Brazilian Zika virus. Sci Rep 2019; 9:12802. [PMID: 31488856 PMCID: PMC6728326 DOI: 10.1038/s41598-019-49209-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 08/15/2019] [Indexed: 02/07/2023] Open
Abstract
Recent data in a nonhuman primate model showed that infants postnatally infected with Zika virus (ZIKV) were acutely susceptible to high viremia and neurological damage, suggesting the window of vulnerability extends beyond gestation. In this pilot study, we addressed the susceptibility of two infant rhesus macaques born healthy to dams infected with Zika virus during pregnancy. Passively acquired neutralizing antibody titers dropped below detection limits between 2 and 3 months of age, while binding antibodies remained detectable until viral infection at 5 months. Acute serum viremia was comparatively lower than adults infected with the same Brazilian isolate of ZIKV (n = 11 pregnant females, 4 males, and 4 non-pregnant females). Virus was never detected in cerebrospinal fluid nor in neural tissues at necropsy two weeks after infection. However, viral RNA was detected in lymph nodes, confirming some tissue dissemination. Though protection was not absolute and our study lacks an important comparison with postnatally infected infants born to naïve dams, our data suggest infants born healthy to infected mothers may harbor a modest but important level of protection from postnatally acquired ZIKV for several months after birth, an encouraging result given the potentially severe infection outcomes of this population.
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Affiliation(s)
- Nicholas J Maness
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, Louisiana, USA.
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA.
| | - Blake Schouest
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA
- Biomedical Sciences Training Program, Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Anil Singapuri
- Department of Pathology, Microbiology and Immunology, University of California, Davis, CA, USA
| | - Maria Dennis
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
| | - Margaret H Gilbert
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA
| | - Rudolf P Bohm
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA
| | - Faith Schiro
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA
| | - Pyone P Aye
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA
| | - Kate Baker
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA
| | - Koen K A Van Rompay
- Department of Pathology, Microbiology and Immunology, University of California, Davis, CA, USA
- California National Primate Research Center, University of California, Davis, California, USA
| | - Andrew A Lackner
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA
| | - Myrna C Bonaldo
- Laboratório de Biologia Molecular de Flavivírus, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brazil
| | - Robert V Blair
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA
| | - Sallie R Permar
- Duke Human Vaccine Institute, Duke University Medical Center, Durham, North Carolina, USA
- Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Lark L Coffey
- Department of Pathology, Microbiology and Immunology, University of California, Davis, CA, USA
| | - Antonito T Panganiban
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, Louisiana, USA
- Tulane National Primate Research Center, Tulane University, Covington, Louisiana, USA
| | - Diogo Magnani
- MassBiologics of the University of Massachusetts Medical School, Boston, Massachusetts, USA
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73
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Hu Y, Sun L. Systematic Analysis of Structure Similarity between Zika Virus and Other Flaviviruses. ACS Infect Dis 2019; 5:1070-1080. [PMID: 31038920 DOI: 10.1021/acsinfecdis.9b00047] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Zika virus (ZIKV) infection has caused global concern because of its association with fetal microcephaly and serious neurological complications in adults since 2016. Currently, no specific anti-ZIKV therapy is available to control ZIKV infection. During the last couple of years, the intensive investigation of ZIKV structure has provided significant information for structure-based vaccine and drug design. In this review, we summarized the research progress on the structures of ZIKV and its component proteins. We analyzed the structure identity and the differences between ZIKV and other flaviviruses. This information is crucial to guiding structure-based anti-ZIKV inhibitors and vaccine discovery.
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Affiliation(s)
- Yuxia Hu
- The Fifth People’s Hospital of Shanghai and Institutes of Biomedical Sciences, Fudan University, 131 Dongan Road, Shanghai 20032, China
| | - Lei Sun
- The Fifth People’s Hospital of Shanghai and Institutes of Biomedical Sciences, Fudan University, 131 Dongan Road, Shanghai 20032, China
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74
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Upper and lower genital tract Zika virus screening in a large cohort of reproductive-age women during the Americas epidemic. Reprod Biomed Online 2019; 39:624-632. [PMID: 31375360 DOI: 10.1016/j.rbmo.2019.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/14/2019] [Accepted: 05/17/2019] [Indexed: 11/21/2022]
Abstract
RESEARCH QUESTION To determine whether there is a risk of localized Zika virus (ZIKV) infection in the upper genital tract, specifically the oocytes, follicular fluids and endometrium, in exposed and/or recently infected reproductive-age women. ZIKV is an Aedes mosquito-borne Flavivirus that can lead to birth defects and to developmental anomalies when it infects pregnant women. DESIGN Controlled observational clinical study following 179 female patients undergoing oocyte vitrification cycles in an academic fertility centre during the ZIKV epidemic in the French territories of the Americas. At the time, the French Ministry of Health issued a ban on medically-induced pregnancies. Oocyte vitrification cycles were the only means of preserving fertility options and ensuring Zika-free oocyte cryopreservation for currently exposed and/or recently infected patients. Samples of serum, urine, lower genital tract, endometrium, follicular fluid and immature oocytes were tested for ZIKV RNA (vRNA) by quantitative reverse transcription polymerase chain reaction (qRT-PCR). Serological analysis for ZIKV antibodies was performed in succession for the duration of the study. The follow-up protocol was set up for more than 6 months post-exposure or post-onset. RESULTS No vRNA was detected in the various samples from exposed patients. Furthermore, no vRNA was found in the upper genital tracts of women with a recent (3 months) history of acute infection. CONCLUSION These findings represent evidence of a lack of vRNA persistence in the reproductive tract in ZIKV exposed and/or recently infected reproductive-age women and could help simplify current guidelines.
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75
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Atovaquone Inhibits Arbovirus Replication through the Depletion of Intracellular Nucleotides. J Virol 2019; 93:JVI.00389-19. [PMID: 30894466 DOI: 10.1128/jvi.00389-19] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 03/13/2019] [Indexed: 12/11/2022] Open
Abstract
Arthropod-borne viruses represent a significant public health threat worldwide, yet there are few antiviral therapies or prophylaxes targeting these pathogens. In particular, the development of novel antivirals for high-risk populations such as pregnant women is essential to prevent devastating disease such as that which was experienced with the recent outbreak of Zika virus (ZIKV) in the Americas. One potential avenue to identify new and pregnancy-acceptable antiviral compounds is to repurpose well-known and widely used FDA-approved drugs. In this study, we addressed the antiviral role of atovaquone, an FDA Pregnancy Category C drug and pyrimidine biosynthesis inhibitor used for the prevention and treatment of parasitic infections. We found that atovaquone was able to inhibit ZIKV and chikungunya virus virion production in human cells and that this antiviral effect occurred early during infection at the initial steps of viral RNA replication. Moreover, we were able to complement viral replication and virion production with the addition of exogenous pyrimidine nucleosides, indicating that atovaquone functions through the inhibition of the pyrimidine biosynthesis pathway to inhibit viral replication. Finally, using an ex vivo human placental tissue model, we found that atovaquone could limit ZIKV infection in a dose-dependent manner, providing evidence that atovaquone may function as an antiviral in humans. Taken together, these studies suggest that atovaquone could be a broad-spectrum antiviral drug and a potential attractive candidate for the prophylaxis or treatment of arbovirus infection in vulnerable populations, such as pregnant women and children.IMPORTANCE The ability to protect vulnerable populations such as pregnant women and children from Zika virus and other arbovirus infections is essential to preventing the devastating complications induced by these viruses. One class of antiviral therapies may lie in known pregnancy-acceptable drugs that have the potential to mitigate arbovirus infections and disease, yet this has not been explored in detail. In this study, we show that the common antiparasitic drug atovaquone inhibits arbovirus replication through intracellular nucleotide depletion and can impair ZIKV infection in an ex vivo human placental explant model. Our study provides a novel function for atovaquone and highlights that the rediscovery of pregnancy-acceptable drugs with potential antiviral effects can be the key to better addressing the immediate need for treating viral infections and preventing potential birth complications and future disease.
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76
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Watanabe S, Tan NWW, Chan KWK, Vasudevan SG. Assessing the utility of antivirals for preventing maternal-fetal transmission of zika virus in pregnant mice. Antiviral Res 2019; 167:104-109. [PMID: 31051186 DOI: 10.1016/j.antiviral.2019.04.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/24/2019] [Accepted: 04/25/2019] [Indexed: 11/18/2022]
Abstract
Zika virus (ZIKV) infection during pregnancy has been associated with adverse outcomes and birth defects such as microcephaly in newborn children. Congenital malformations associated with ZIKV are believed to occur via direct infection of the fetus. Unfortunately, there are no licensed therapeutic or preventative tools to block maternal-fetal transmission of ZIKV. In this study, we developed a mouse model of ZIKV infection that specifically establishes vertical maternal-fetal transmission of ZIKV in 40-60% of fetuses when the dams acquire ZIKV infection during pregnancy. This mouse model somewhat mirrors the experience in humans at the peak of the epidemic in the Americas. Using this model, we demonstrate that a well-documented directly acting antiviral (DAA) compound that targets flaviviral RNA synthesis can completely prevent fetal infection when the treatment is started at the time of infection. Notably, we show that the treatment commenced at the time of peak viremia is still able to reduce the risk of fetal infection concomitant with significant reduction in placental viral load. Our results show for the first time the potential for clinical development of antiviral drugs for preventing vertical maternal-fetal transmission of ZIKV.
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Affiliation(s)
- Satoru Watanabe
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 8-College Road, 169857, Singapore.
| | - Nicole Wei Wen Tan
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 8-College Road, 169857, Singapore
| | - Kitti Wing Ki Chan
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 8-College Road, 169857, Singapore
| | - Subhash G Vasudevan
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, 8-College Road, 169857, Singapore.
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77
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Abstract
Zika virus (ZIKV) infection can result in serious consequences, including severe congenital manifestations, persistent infection in the testes, and neurologic sequelae. After a pandemic emergence, the virus has spread to much of North and South America and has been introduced to many countries outside of ZIKV-endemic areas as infected travelers return to their home countries. Rodent models have been important in gaining a better understanding of the wide range of disease etiologies associated with ZIKV infection and for the initial phase of developing countermeasures to prevent or treat viral infections. We discuss herein the advantages and disadvantages of small-animal models that have been developed to replicate various aspects of disease associated with ZIKV infection.
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Affiliation(s)
- Justin G Julander
- Institute for Antiviral Research, ADVS Department, Utah State University, Logan
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78
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Gregory CJ, Oduyebo T, Brault AC, Brooks JT, Chung KW, Hills S, Kuehnert MJ, Mead P, Meaney-Delman D, Rabe I, Staples E, Petersen LR. Modes of Transmission of Zika Virus. J Infect Dis 2019; 216:S875-S883. [PMID: 29267909 DOI: 10.1093/infdis/jix396] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
For >60 years, Zika virus (ZIKV) has been recognized as an arthropod-borne virus with Aedes species mosquitoes as the primary vector. However in the past 10 years, multiple alternative routes of ZIKV transmission have been identified. We review the available data on vector and non-vector-borne modes of transmission and interventions undertaken, to date, to reduce the risk of human infection through these routes. Although much has been learned during the outbreak in the Americas on the underlying mechanisms and pathogenesis of non-vector-borne ZIKV infections, significant gaps remain in our understanding of the relative incidence of, and risk from, these modes compared to mosquito transmission. Additional research is urgently needed on the risk, pathogenesis, and effectiveness of measures to mitigate non-vector-borne ZIKV transmission.
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Affiliation(s)
- Christopher J Gregory
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado
| | - Titilope Oduyebo
- Division of Reproductive Health, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Aaron C Brault
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado
| | - John T Brooks
- Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Koo-Whang Chung
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Susan Hills
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado
| | - Matthew J Kuehnert
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Paul Mead
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado
| | - Dana Meaney-Delman
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Ingrid Rabe
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado
| | - Erin Staples
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado
| | - Lyle R Petersen
- Division of Vector-Borne Diseases, Centers for Disease Control and Prevention, Fort Collins, Colorado
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79
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Pre-Clinical Pregnancy Models for Evaluating Zika Vaccines. Trop Med Infect Dis 2019; 4:tropicalmed4020058. [PMID: 30959955 PMCID: PMC6630727 DOI: 10.3390/tropicalmed4020058] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/26/2019] [Accepted: 04/04/2019] [Indexed: 01/07/2023] Open
Abstract
Zika virus (ZIKV) infection during pregnancy can result in a variety of developmental abnormalities in the fetus, referred to as Congenital Zika Syndrome (CZS). The effects of CZS can range from the loss of the viable fetus to a variety of neurological defects in full-term infants, including microcephaly. The clinical importance of ZIKV-induced CZS has driven an intense effort to develop effective vaccines. Consequently, there are approximately 45 different ZIKV vaccine candidates at various stages of development with several undergoing phase I and II clinical trials. These vaccine candidates have been shown to effectively prevent infection in adult animal models, however, there has been less extensive testing for their ability to block vertical transmission to the fetus during pregnancy or prevent the development of CZS. In addition, it is becoming increasingly difficult to test vaccines in the field as the intensity of the ZIKV epidemic has declined precipitously, making clinical endpoint studies difficult. These ethical and practical challenges in determining efficacy of ZIKV vaccine candidates in preventing CZS have led to increased emphasis on pre-clinical testing in animal pregnancy models. Here we review the current status of pre-clinical pregnancy models for testing the ability of ZIKV vaccines to prevent CZS.
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80
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Protection of ZIKV infection-induced neuropathy by abrogation of acute antiviral response in human neural progenitors. Cell Death Differ 2019; 26:2607-2621. [PMID: 30952992 PMCID: PMC7224299 DOI: 10.1038/s41418-019-0324-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 02/16/2019] [Accepted: 03/19/2019] [Indexed: 01/04/2023] Open
Abstract
It remains largely unknown how Zika virus (ZIKV) infection causes severe microcephaly in human newborns. We examined an Asian lineage ZIKV, SZ01, which similarly infected and demonstrated comparable growth arrest and apoptotic pathological changes in human neuroprogenitors (NPCs) from forebrain dorsal, forebrain ventral as well as hindbrain and spinal cord brain organoids derived from human pluripotent stem cells. Transcriptome profiling showed common overactivated antiviral response in all regional NPCs upon ZIKV infection. ZIKV infection directly activated a subset of IFN-stimulated genes (ISGs) in human NPCs, which depended on the presence of IRF3 and NF-κB rather than IFN production and secretion, highlighting a key role of IFN-independent acute antiviral pathway underlying ZIKV infection-caused neuropathy. Our findings therefore reveal that overactivated antiviral response is detrimental rather than protective in human NPCs, and the IFN-independent acute antiviral pathway may serve as a potential target to ameliorate ZIKV infection-triggered neuropathy.
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81
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Eloundou SN, Lee J, Wu D, Lei J, Feller MC, Ozen M, Zhu Y, Hwang M, Jia B, Xie H, Clemens JL, McLane MW, AlSaggaf S, Nair N, Wills-Karp M, Wang X, Graham EM, Baschat A, Burd I. Placental malperfusion in response to intrauterine inflammation and its connection to fetal sequelae. PLoS One 2019; 14:e0214951. [PMID: 30943260 PMCID: PMC6447225 DOI: 10.1371/journal.pone.0214951] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 03/22/2019] [Indexed: 11/29/2022] Open
Abstract
Exposure to intrauterine inflammation (IUI) is associated with short- and long-term adverse perinatal outcomes. However, little data exist on utilizing placenta to prognosticate fetal injury in this scenario. Our study aimed to utilize imaging modalities to evaluate mechanisms contributing to placental injury following IUI exposure and correlated it to concomitant fetal brain injury. CD1 pregnant dams underwent laparotomies and received intrauterine injections of either lipopolysaccharide (LPS; a model of IUI) or phosphate-buffered saline (PBS). In utero ultrasound Doppler velocimetry of uterine and umbilical arteries and magnetic resonance imaging (MRI) of placental volumes with confirmatory immunohistochemical (vimentin) and histochemistry (fibrin) analyses were performed. ELISA for thrombosis markers, fibrinogen and fibrin was performed to analyze thrombi in placenta. Fetal brain immunohistochemistry was performed to detect microglial activation (ionized calcium-binding adaptor molecule 1, Iba1). On ultrasound, LPS group demonstrated elevated resistance indices, pulsatility indices and a greater occurrence of absent end-diastolic flow in the umbilical and uterine arteries. In the fetus, there was an increased cardiac Tei indices in the LPS group. MRI revealed decreased volume of placenta in the LPS group associated with placental thinning and placental endothelial damage on immunohistochemistry. Decreased fibrinogen content and more thrombi staining in placenta exposed to maternal LPS indicated the hypercoagulability. Furthermore, the expression of Iba1was significantly associated with placental thickness (r = -0.7890, Pearson correlation coefficient). Our data indicate that IUI can trigger events leading to maternal placental malperfusion and fetal vessel resistance, as well as predispose the developing fetus to cardiac dysfunction and brain damage. Furthermore, our data suggest that prenatal ultrasound can be a real-time clinical tool for assessing fetal risk for adverse neurologic outcomes following the potential IUI exposure.
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Affiliation(s)
- Solange N. Eloundou
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - JiYeon Lee
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Dan Wu
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Jun Lei
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Mia C. Feller
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Maide Ozen
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
- Division of Neonatology, Department of Pediatrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Yan Zhu
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Misun Hwang
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Bei Jia
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Han Xie
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Julia L. Clemens
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Michael W. McLane
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Samar AlSaggaf
- Department of Pathology, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Nita Nair
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Marsha Wills-Karp
- Department of Environmental Health and Engineering, Johns Hopkins University, School of Public Health, Baltimore, MD, United States of America
| | - Xiaobin Wang
- Department of Population, Family and Reproductive Health, Center on Early Life Origins of Disease, Johns Hopkins University, School of Public Health, Baltimore, MD, United States of America
| | - Ernest M. Graham
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Ahmet Baschat
- Fetal Therapy, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
| | - Irina Burd
- Integrated Research Center for Fetal Medicine, Division of Maternal Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University, School of Medicine, Baltimore, MD, United States of America
- * E-mail:
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82
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Lei J, Vermillion MS, Jia B, Xie H, Xie L, McLane MW, Sheffield JS, Pekosz A, Brown A, Klein SL, Burd I. IL-1 receptor antagonist therapy mitigates placental dysfunction and perinatal injury following Zika virus infection. JCI Insight 2019; 4:122678. [PMID: 30944243 DOI: 10.1172/jci.insight.122678] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 02/14/2019] [Indexed: 12/25/2022] Open
Abstract
Zika virus (ZIKV) infection during pregnancy causes significant adverse sequelae in the developing fetus, and results in long-term structural and neurologic defects. Most preventive and therapeutic efforts have focused on the development of vaccines, antivirals, and antibodies. The placental immunologic response to ZIKV, however, has been largely overlooked as a target for therapeutic intervention. The placental inflammatory response, specifically IL-1β secretion and signaling, is induced by ZIKV infection and represents an environmental factor that is known to increase the risk of perinatal developmental abnormalities. We show in a mouse model that maternally administrated IL-1 receptor antagonist (IRA; Kineret, or anakinra), following ZIKV exposure, can preserve placental function (by improving trophoblast invasion and placental vasculature), increase fetal viability, and reduce neurobehavioral deficits in the offspring. We further demonstrate that while ZIKV RNA is highly detectable in placentas, it is not correlated with fetal viability. Beyond its effects in the placenta, we show that IL-1 blockade may also directly decrease fetal neuroinflammation by mitigating fetal microglial activation in a dose-dependent manner. Our studies distinguish the role of placental inflammation during ZIKV-infected pregnancies, and demonstrate that maternal IRA may attenuate fetal neuroinflammation and improve perinatal outcomes.
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Affiliation(s)
- Jun Lei
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Meghan S Vermillion
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.,Department of Molecular and Comparative Pathobiology
| | - Bei Jia
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Han Xie
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Li Xie
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Michael W McLane
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jeanne S Sheffield
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Andrew Pekosz
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Amanda Brown
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sabra L Klein
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA.,Department of Biochemistry and Molecular Biology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Irina Burd
- Integrated Research Center for Fetal Medicine, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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83
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Gurung S, Reuter N, Preno A, Dubaut J, Nadeau H, Hyatt K, Singleton K, Martin A, Parks WT, Papin JF, Myers DA. Zika virus infection at mid-gestation results in fetal cerebral cortical injury and fetal death in the olive baboon. PLoS Pathog 2019; 15:e1007507. [PMID: 30657788 PMCID: PMC6355048 DOI: 10.1371/journal.ppat.1007507] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/31/2019] [Accepted: 12/05/2018] [Indexed: 11/21/2022] Open
Abstract
Zika virus (ZIKV) infection during pregnancy in humans is associated with an increased incidence of congenital anomalies including microcephaly as well as fetal death and miscarriage and collectively has been referred to as Congenital Zika Syndrome (CZS). Animal models for ZIKV infection in pregnancy have been developed including mice and non-human primates (NHPs). In macaques, fetal CZS outcomes from maternal ZIKV infection range from none to significant. In the present study we develop the olive baboon (Papio anubis), as a model for vertical transfer of ZIKV during pregnancy. Four mid-gestation, timed-pregnant baboons were inoculated with the French Polynesian ZIKV isolate (104 ffu). This study specifically focused on the acute phase of vertical transfer. Dams were terminated at 7 days post infection (dpi; n = 1), 14 dpi (n = 2) and 21 dpi (n = 1). All dams exhibited mild to moderate rash and conjunctivitis. Viremia peaked at 5–7 dpi with only one of three dams remaining mildly viremic at 14 dpi. An anti-ZIKV IgM response was observed by 14 dpi in all three dams studied to this stage, and two dams developed a neutralizing IgG response by either 14 dpi or 21 dpi, the latter included transfer of the IgG to the fetus (cord blood). A systemic inflammatory response (increased IL2, IL6, IL7, IL15, IL16) was observed in three of four dams. Vertical transfer of ZIKV to the placenta was observed in three pregnancies (n = 2 at 14 dpi and n = 1 at 21 dpi) and ZIKV was detected in fetal tissues in two pregnancies: one associated with fetal death at ~14 dpi, and the other in a viable fetus at 21 dpi. ZIKV RNA was detected in the fetal cerebral cortex and other tissues of both of these fetuses. In the fetus studied at 21 dpi with vertical transfer of virus to the CNS, the frontal cerebral cortex exhibited notable defects in radial glia, radial glial fibers, disorganized migration of immature neurons to the cortical layers, and signs of pathology in immature oligodendrocytes. In addition, indices of pronounced neuroinflammation were observed including astrogliosis, increased microglia and IL6 expression. Of interest, in one fetus examined at 14 dpi without detection of ZIKV RNA in brain and other fetal tissues, increased neuroinflammation (IL6 and microglia) was observed in the cortex. Although the placenta of the 14 dpi dam with fetal death showed considerable pathology, only minor pathology was noted in the other three placentas. ZIKV was detected immunohistochemically in two placentas (14 dpi) and one placenta at 21 dpi but not at 7 dpi. This is the first study to examine the early events of vertical transfer of ZIKV in a NHP infected at mid-gestation. The baboon thus represents an additional NHP as a model for ZIKV induced brain pathologies to contrast and compare to humans as well as other NHPs. Zika virus is endemic in the Americas, primarily spread through mosquitos and sexual contact. Zika virus infection during pregnancy in women is associated with a variety of fetal pathologies now referred to as Congenital Zika Syndrome (CZS), with the most severe pathology being fetal microcephaly. Developing model organisms that faithfully recreate Zika infection in humans is critical for future development of treatments and preventions. In our present study, we infected Olive baboons at mid-gestation with Zika virus and studied the acute period of viremia and transfer of Zika virus to the fetus during the first three weeks after infection to better understand the timing and mechanisms of transfer of ZIKV across the placenta, leading to CZS. We observed Zika virus transfer to fetuses resulting in fetal death in one pregnancy and in a second pregnancy, significant damage to the frontal cortex of the fetal brain at a critical period of neurodevelopment in primates. Thus, the baboon provides a promising new non-human primate model to further compare and contrast the consequences of Zika virus infection in pregnancy to humans and other non-human primates.
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Affiliation(s)
- Sunam Gurung
- Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Nicole Reuter
- Division of Comparative Medicine, Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Alisha Preno
- Division of Comparative Medicine, Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Jamie Dubaut
- Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Hugh Nadeau
- Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Kimberly Hyatt
- Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Krista Singleton
- Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Ashley Martin
- Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
- Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - W. Tony Parks
- Department of Pathology, University of Toronto, Toronto, Ontario, Canada
| | - James F. Papin
- Division of Comparative Medicine, Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, United States of America
| | - Dean A. Myers
- Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
- * E-mail:
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84
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Tavakoli A, Esghaei M, Karbalaie Niya MH, Marjani A, Tabibzadeh A, Karimzadeh M, Monavari SH. A comprehensive review of Zika virus infection. THE JOURNAL OF QAZVIN UNIVERSITY OF MEDICAL SCIENCES 2018. [DOI: 10.29252/qums.22.5.87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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85
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Animal Models of Zika Virus Infection during Pregnancy. Viruses 2018; 10:v10110598. [PMID: 30384472 PMCID: PMC6266710 DOI: 10.3390/v10110598] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 10/28/2018] [Accepted: 10/30/2018] [Indexed: 02/06/2023] Open
Abstract
Zika virus (ZIKV) emerged suddenly in the Americas in 2015 and was associated with a widespread outbreak of microcephaly and other severe congenital abnormalities in infants born to mothers infected during pregnancy. Vertical transmission of ZIKV in humans was confirmed when viral RNA was detected in fetal and placental tissues, and this outcome has been recapitulated experimentally in animals. Unlike other flaviviruses, ZIKV is both arthropod- and sexually-transmitted, and has a broad tissue tropism in humans, including multiple tissues of the reproductive tract. The threats posed by ZIKV have prompted the development of multiple in vivo models to better understand the pathogenesis of ZIKV, particularly during pregnancy. Here, we review the progress on animal models of ZIKV infection during pregnancy. These studies have generated a foundation of insights into the biology of ZIKV, and provide a means for evaluating vaccines and therapeutics.
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86
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Setoh YX, Peng NY, Nakayama E, Amarilla AA, Prow NA, Suhrbier A, Khromykh AA. Fetal Brain Infection Is Not a Unique Characteristic of Brazilian Zika Viruses. Viruses 2018; 10:v10100541. [PMID: 30282919 PMCID: PMC6213914 DOI: 10.3390/v10100541] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 09/20/2018] [Accepted: 09/30/2018] [Indexed: 02/06/2023] Open
Abstract
The recent emergence of Zika virus (ZIKV) in Brazil was associated with an increased number of fetal brain infections that resulted in a spectrum of congenital neurological complications known as congenital Zika syndrome (CZS). Herein, we generated de novo from sequence data an early Asian lineage ZIKV isolate (ZIKV-MY; Malaysia, 1966) not associated with microcephaly and compared the in vitro replication kinetics and fetal brain infection in interferon α/β receptor 1 knockout (IFNAR1−/−) dams of this isolate and of a Brazilian isolate (ZIKV-Natal; Natal, 2015) unequivocally associated with microcephaly. The replication efficiencies of ZIKV-MY and ZIKV-Natal in A549 and Vero cells were similar, while ZIKV-MY replicated more efficiently in wild-type (WT) and IFNAR−/− mouse embryonic fibroblasts. Viremias in IFNAR1−/− dams were similar after infection with ZIKV-MY or ZIKV-Natal, and importantly, infection of fetal brains was also not significantly different. Thus, fetal brain infection does not appear to be a unique feature of Brazilian ZIKV isolates.
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Affiliation(s)
- Yin Xiang Setoh
- Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia 4072, Australia.
| | - Nias Y Peng
- Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia 4072, Australia.
| | - Eri Nakayama
- Inflammation Biology Group, QIMR Berghofer Medical Research Institute, Brisbane 4006, Australia.
- Department of Virology I, National Institute of Infectious Diseases, Tokyo 162-8640, Japan.
| | - Alberto A Amarilla
- Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia 4072, Australia.
| | - Natalie A Prow
- Inflammation Biology Group, QIMR Berghofer Medical Research Institute, Brisbane 4006, Australia.
| | - Andreas Suhrbier
- Inflammation Biology Group, QIMR Berghofer Medical Research Institute, Brisbane 4006, Australia.
| | - Alexander A Khromykh
- Australian Infectious Diseases Research Centre, School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia 4072, Australia.
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87
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Abstract
The recent epidemic of Zika virus (ZIKV) in the Americas has revealed the devastating consequences of ZIKV infection, particularly in pregnant women. Congenital Zika syndrome, characterized by malformations and microcephaly in neonates as well as developmental challenges in children, highlights the need for the development of a safe and effective vaccine. Multiple vaccine candidates have been developed and have shown promising results in both animal models and phase I clinical trials. However, important challenges remain for the clinical development of these vaccines. In this Progress article, we discuss recent preclinical studies and lessons learned from first-in-human clinical trials with ZIKV vaccines.
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88
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Microglia control the spread of neurotropic virus infection via P2Y12 signalling and recruit monocytes through P2Y12-independent mechanisms. Acta Neuropathol 2018; 136:461-482. [PMID: 30027450 PMCID: PMC6096730 DOI: 10.1007/s00401-018-1885-0] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 06/11/2018] [Accepted: 07/05/2018] [Indexed: 12/22/2022]
Abstract
Neurotropic herpesviruses can establish lifelong infection in humans and contribute to severe diseases including encephalitis and neurodegeneration. However, the mechanisms through which the brain’s immune system recognizes and controls viral infections propagating across synaptically linked neuronal circuits have remained unclear. Using a well-established model of alphaherpesvirus infection that reaches the brain exclusively via retrograde transsynaptic spread from the periphery, and in vivo two-photon imaging combined with high resolution microscopy, we show that microglia are recruited to and isolate infected neurons within hours. Selective elimination of microglia results in a marked increase in the spread of infection and egress of viral particles into the brain parenchyma, which are associated with diverse neurological symptoms. Microglia recruitment and clearance of infected cells require cell-autonomous P2Y12 signalling in microglia, triggered by nucleotides released from affected neurons. In turn, we identify microglia as key contributors to monocyte recruitment into the inflamed brain, which process is largely independent of P2Y12. P2Y12-positive microglia are also recruited to infected neurons in the human brain during viral encephalitis and both microglial responses and leukocyte numbers correlate with the severity of infection. Thus, our data identify a key role for microglial P2Y12 in defence against neurotropic viruses, whilst P2Y12-independent actions of microglia may contribute to neuroinflammation by facilitating monocyte recruitment to the sites of infection.
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89
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The emergence of Zika virus and its new clinical syndromes. Nature 2018; 560:573-581. [PMID: 30158602 DOI: 10.1038/s41586-018-0446-y] [Citation(s) in RCA: 259] [Impact Index Per Article: 43.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 07/19/2018] [Indexed: 11/08/2022]
Abstract
Zika virus (ZIKV) is a mosquito-transmitted flavivirus that has emerged as a global health threat because of its potential to generate explosive epidemics and ability to cause congenital disease in the context of infection during pregnancy. Whereas much is known about the biology of related flaviviruses, the unique features of ZIKV pathogenesis, including infection of the fetus, persistence in immune-privileged sites and sexual transmission, have presented new challenges. The rapid development of cell culture and animal models has facilitated a new appreciation of ZIKV biology. This knowledge has created opportunities for the development of countermeasures, including multiple ZIKV vaccine candidates, which are advancing through clinical trials. Here we describe the recent advances that have led to a new understanding of the causes and consequences of the ZIKV epidemic.
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90
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Paul AM, Acharya D, Neupane B, Thompson EA, Gonzalez-Fernandez G, Copeland KM, Garrett M, Liu H, Lopez ME, de Cruz M, Flynt A, Liao J, Guo YL, Gonzalez-Fernandez F, Vig PJS, Bai F. Congenital Zika Virus Infection in Immunocompetent Mice Causes Postnatal Growth Impediment and Neurobehavioral Deficits. Front Microbiol 2018; 9:2028. [PMID: 30210488 PMCID: PMC6124374 DOI: 10.3389/fmicb.2018.02028] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/10/2018] [Indexed: 02/04/2023] Open
Abstract
A small percentage of babies born to Zika virus (ZIKV)-infected mothers manifest severe defects at birth, including microcephaly. Among those who appeared healthy at birth, there are increasing reports of postnatal growth or developmental defects. However, the impact of congenital ZIKV infection in postnatal development is poorly understood. Here, we report that a mild congenital ZIKV-infection in pups born to immunocompetent pregnant mice did not display apparent defects at birth, but manifested postnatal growth impediments and neurobehavioral deficits, which include reduced locomotor and cognitive deficits that persisted into adulthood. We found that the brains of these pups were smaller, had a thinner cortical layer 1, displayed increased astrogliosis, decreased expression of microcephaly- and neuron development- related genes, and increased pathology as compared to mock-infected controls. In summary, our results showed that even a mild congenital ZIKV infection in immunocompetent mice could lead to postnatal deficits, providing definitive experimental evidence for a necessity to closely monitor postnatal growth and development of presumably healthy human infants, whose mothers were exposed to ZIKV infection during pregnancy.
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Affiliation(s)
- Amber M. Paul
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS, United States
| | - Dhiraj Acharya
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS, United States
| | - Biswas Neupane
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS, United States
| | - E. Ashely Thompson
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS, United States
| | | | | | - Me’Lanae Garrett
- Department of Bioengineering, University of Texas, Arlington, TX, United States
| | - Haibei Liu
- Hattiesburg Clinic, Hattiesburg, MS, United States
| | - Mariper E. Lopez
- Department of Neurology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Matthew de Cruz
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS, United States
| | - Alex Flynt
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS, United States
| | - Jun Liao
- Department of Bioengineering, University of Texas, Arlington, TX, United States
| | - Yan-Lin Guo
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS, United States
| | - Federico Gonzalez-Fernandez
- Medical Research Service, G.V. (Sonny) Montgomery Veterans Affairs Medical Center, Jackson, MS, United States
- Department of Ophthalmology and Pathology, University of Mississippi Medical Center, Jackson, MS, United States
- Pathrd, Inc.,Jackson, MS, United States
| | - Parminder J. S. Vig
- Department of Neurology, University of Mississippi Medical Center, Jackson, MS, United States
| | - Fengwei Bai
- Department of Biological Sciences, University of Southern Mississippi, Hattiesburg, MS, United States
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91
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Cross-reactive Dengue virus-specific CD8 + T cells protect against Zika virus during pregnancy. Nat Commun 2018; 9:3042. [PMID: 30072692 PMCID: PMC6072705 DOI: 10.1038/s41467-018-05458-0] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 07/04/2018] [Indexed: 01/30/2023] Open
Abstract
As Zika virus (ZIKV) emerges into Dengue virus (DENV)-endemic areas, cases of ZIKV infection in DENV-immune pregnant women may rise. Here we show that prior DENV immunity affects maternal and fetal ZIKV infection in pregnancy using sequential DENV and ZIKV infection models. Fetuses in ZIKV-infected DENV-immune dams were normal sized, whereas fetal demise occurred in non-immune dams. Moreover, reduced ZIKV RNA is present in the placenta and fetuses of ZIKV-infected DENV-immune dams. DENV cross-reactive CD8+ T cells expand in the maternal spleen and decidua of ZIKV-infected dams, their depletion increases ZIKV infection in the placenta and fetus, and results in fetal demise. The inducement of cross-reactive CD8+ T cells via peptide immunization or adoptive transfer results in decreased ZIKV infection in the placenta. Prior DENV immunity can protect against ZIKV infection during pregnancy in mice, and CD8+ T cells are sufficient for this cross-protection. This has implications for understanding the natural history of ZIKV in DENV-endemic areas and the development of optimal ZIKV vaccines.
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92
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Qadir A, Riaz M, Saeed M, Shahzad-Ul-Hussan S. Potential targets for therapeutic intervention and structure based vaccine design against Zika virus. Eur J Med Chem 2018; 156:444-460. [PMID: 30015077 DOI: 10.1016/j.ejmech.2018.07.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 06/28/2018] [Accepted: 07/06/2018] [Indexed: 01/01/2023]
Abstract
Continuously increasing number of reports of Zika virus (ZIKV) infections and associated severe clinical manifestations, including autoimmune abnormalities and neurological disorders such as neonatal microcephaly and Guillain-Barré syndrome have created alarming situation in various countries. To date, no specific antiviral therapy or vaccine is available against ZIKV. This review provides a comprehensive insight into the potential therapeutic targets and describes viral epitopes of broadly neutralizing antibodies (bNAbs) in vaccine design perspective. Interactions between ZIKV envelope glycoprotein E and cellular receptors mediate the viral fusion and entry to the target cell. Blocking these interactions by targeting cellular receptors or viral structural proteins mediating these interactions or viral surface glycans can inhibit viral entry to the cell. Similarly, different non-structural proteins of ZIKV and un-translated regions (UTRs) of its RNA play essential roles in viral replication cycle and potentiate for therapeutic interventions. Structure based vaccine design requires identity and structural description of the epitopes of bNAbs. We have described different conserved bNAb epitopes present in the ZIKV envelope as potential targets for structure based vaccine design. This review also highlights successes, unanswered questions and future perspectives in relation to therapeutic and vaccine development against ZIKV.
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Affiliation(s)
- Amina Qadir
- Department of Biology, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, 54792, Pakistan
| | - Muhammad Riaz
- Department of Chemistry, University of Azad Jammu & Kashmir, Muzaffarabad, Pakistan
| | - Muhammad Saeed
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, 54792, Pakistan.
| | - Syed Shahzad-Ul-Hussan
- Department of Biology, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, 54792, Pakistan.
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93
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Sheridan MA, Balaraman V, Schust DJ, Ezashi T, Roberts RM, Franz AWE. African and Asian strains of Zika virus differ in their ability to infect and lyse primitive human placental trophoblast. PLoS One 2018; 13:e0200086. [PMID: 29985932 PMCID: PMC6037361 DOI: 10.1371/journal.pone.0200086] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 06/19/2018] [Indexed: 01/08/2023] Open
Abstract
Zika virus (ZIKV) drew worldwide attention when a recent epidemic was linked to fetal microcephaly. Here we used human embryonic stem cell derived trophoblasts as a model for primitive placental trophoblast to test the hypothesis that there are differences in how the two genetically distinct ZIKV lineages, African (AF) and Asian (AS), target the human placenta. Upon infection with three AF (ib-H30656, SEN/1984/41525-DAK, and MR-766) and three AS (FSS13025, MexI-44, and PANcdc259249) ZIKV strains, we observed that severe placental cell lysis was only induced after infection with AF strains, while viral replication rates remained similar between both lineages. Differences in cytopathic effects (CPE) were not observed in Vero cells, indicating that the AF strains were not inherently superior at cell lysis. Taken together, we propose that infection with AF strains of ZIKV early in pregnancy would likely result in pregnancy loss, rather than allow further fetal development with accompanying brain damage. Our results also suggest that the long term laboratory-adapted MR-766 strain does not behave aberrantly in cell culture relative to other AF lineage strains.
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Affiliation(s)
- Megan A. Sheridan
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States of America
- Department of Biochemistry, University of Missouri, Columbia, Missouri, United States of America
| | - Velmurugan Balaraman
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri, United States of America
| | - Danny J. Schust
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri, Columbia, Missouri, United States of America
| | - Toshihiko Ezashi
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States of America
- Division of Animal Sciences, University of Missouri, Columbia, Missouri, United States of America
| | - R. Michael Roberts
- Bond Life Sciences Center, University of Missouri, Columbia, Missouri, United States of America
- Department of Biochemistry, University of Missouri, Columbia, Missouri, United States of America
- Division of Animal Sciences, University of Missouri, Columbia, Missouri, United States of America
| | - Alexander W. E. Franz
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri, United States of America
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94
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Muffat J, Li Y, Omer A, Durbin A, Bosch I, Bakiasi G, Richards E, Meyer A, Gehrke L, Jaenisch R. Human induced pluripotent stem cell-derived glial cells and neural progenitors display divergent responses to Zika and dengue infections. Proc Natl Acad Sci U S A 2018; 115:7117-7122. [PMID: 29915057 PMCID: PMC6142255 DOI: 10.1073/pnas.1719266115] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Maternal Zika virus (ZIKV) infection during pregnancy is recognized as the cause of an epidemic of microcephaly and other neurological anomalies in human fetuses. It remains unclear how ZIKV accesses the highly vulnerable population of neural progenitors of the fetal central nervous system (CNS), and which cell types of the CNS may be viral reservoirs. In contrast, the related dengue virus (DENV) does not elicit teratogenicity. To model viral interaction with cells of the fetal CNS in vitro, we investigated the tropism of ZIKV and DENV for different induced pluripotent stem cell-derived human cells, with a particular focus on microglia-like cells. We show that ZIKV infected isogenic neural progenitors, astrocytes, and microglia-like cells (pMGLs), but was only cytotoxic to neural progenitors. Infected glial cells propagated ZIKV and maintained ZIKV load over time, leading to viral spread to susceptible cells. DENV triggered stronger immune responses and could be cleared by neural and glial cells more efficiently. pMGLs, when cocultured with neural spheroids, invaded the tissue and, when infected with ZIKV, initiated neural infection. Since microglia derive from primitive macrophages originating in proximity to the maternal vasculature, they may act as a viral reservoir for ZIKV and establish infection of the fetal brain. Infection of immature neural stem cells by invading microglia may occur in the early stages of pregnancy, before angiogenesis in the brain rudiments. Our data are also consistent with ZIKV and DENV affecting the integrity of the blood-brain barrier, thus allowing infection of the brain later in life.
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Affiliation(s)
- Julien Muffat
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142
| | - Yun Li
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142
| | - Attya Omer
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142
| | - Ann Durbin
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115
- Harvard-MIT Program in Health Sciences and Technology, Cambridge, MA 02139
| | - Irene Bosch
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115
- Harvard-MIT Program in Health Sciences and Technology, Cambridge, MA 02139
| | | | - Edward Richards
- Koch Institute for Integrative Cancer Research at MIT, Cambridge, MA 02139
| | - Aaron Meyer
- Koch Institute for Integrative Cancer Research at MIT, Cambridge, MA 02139
| | - Lee Gehrke
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA 02115
- Harvard-MIT Program in Health Sciences and Technology, Cambridge, MA 02139
| | - Rudolf Jaenisch
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142;
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139
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95
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Coffey LL, Keesler RI, Pesavento PA, Woolard K, Singapuri A, Watanabe J, Cruzen C, Christe KL, Usachenko J, Yee J, Heng VA, Bliss-Moreau E, Reader JR, von Morgenland W, Gibbons AM, Jackson K, Ardeshir A, Heimsath H, Permar S, Senthamaraikannan P, Presicce P, Kallapur SG, Linnen JM, Gao K, Orr R, MacGill T, McClure M, McFarland R, Morrison JH, Van Rompay KKA. Intraamniotic Zika virus inoculation of pregnant rhesus macaques produces fetal neurologic disease. Nat Commun 2018; 9:2414. [PMID: 29925843 PMCID: PMC6010452 DOI: 10.1038/s41467-018-04777-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 04/10/2018] [Indexed: 01/05/2023] Open
Abstract
Zika virus (ZIKV) infection of pregnant women can cause fetal microcephaly and other neurologic defects. We describe the development of a non-human primate model to better understand fetal pathogenesis. To reliably induce fetal infection at defined times, four pregnant rhesus macaques are inoculated intravenously and intraamniotically with ZIKV at gestational day (GD) 41, 50, 64, or 90, corresponding to first and second trimester of gestation. The GD41-inoculated animal, experiencing fetal death 7 days later, has high virus levels in fetal and placental tissues, implicating ZIKV as cause of death. The other three fetuses are carried to near term and euthanized; while none display gross microcephaly, all show ZIKV RNA in many tissues, especially in the brain, which exhibits calcifications and reduced neural precursor cells. Given that this model consistently recapitulates neurologic defects of human congenital Zika syndrome, it is highly relevant to unravel determinants of fetal neuropathogenesis and to explore interventions.
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Affiliation(s)
- Lark L Coffey
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, 1 Shields Avenue, Davis, CA, 95616, USA.
| | - Rebekah I Keesler
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Patricia A Pesavento
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Kevin Woolard
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Anil Singapuri
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Jennifer Watanabe
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Christina Cruzen
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Kari L Christe
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Jodie Usachenko
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - JoAnn Yee
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Victoria A Heng
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA.,Donders Institute, Radboud University, Montessorilaan 3, 6525 HR, Nijmegen, The Netherlands
| | - Eliza Bliss-Moreau
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA.,Department of Psychology, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - J Rachel Reader
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Wilhelm von Morgenland
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Anne M Gibbons
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Kenneth Jackson
- Department of Pathology, Microbiology and Immunology, School of Veterinary Medicine, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Amir Ardeshir
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Holly Heimsath
- Duke Human Vaccine Institute, Duke University Medical Center, 103020, 2 Genome Court MSRBII, Durham, NC, 27710, USA
| | - Sallie Permar
- Duke Human Vaccine Institute, Duke University Medical Center, 103020, 2 Genome Court MSRBII, Durham, NC, 27710, USA
| | - Paranthaman Senthamaraikannan
- Division of Neonatology and Pulmonary Biology, Cincinnati Children's Hospital Research Foundation, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Pietro Presicce
- Divisions of Neonatology and Developmental Biology, David Geffen School of Medicine at the University of California, 10833 Le Conte Avenue, Los Angeles, CA, 90095, USA
| | - Suhas G Kallapur
- Divisions of Neonatology and Developmental Biology, David Geffen School of Medicine at the University of California, 10833 Le Conte Avenue, Los Angeles, CA, 90095, USA
| | - Jeffrey M Linnen
- Grifols Diagnostic Solutions, Inc., 10808 Willow Court, San Diego, CA, 92127, USA
| | - Kui Gao
- Grifols Diagnostic Solutions, Inc., 10808 Willow Court, San Diego, CA, 92127, USA
| | - Robert Orr
- Office of Counterterrorism and Emerging Threats, Office of the Chief Scientist, Food and Drug Administration, 25 New Hampshire Avenue, Silver Spring, MD, 20903, USA
| | - Tracy MacGill
- Office of Counterterrorism and Emerging Threats, Office of the Chief Scientist, Food and Drug Administration, 25 New Hampshire Avenue, Silver Spring, MD, 20903, USA
| | - Michelle McClure
- Office of Tissues and Advanced Therapies, Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Avenue, Silver Spring, MD, 20903, USA
| | - Richard McFarland
- The Advanced Regenerative Manufacturing Institute, 400 Commercial Street, Manchester, NH, 03101, USA
| | - John H Morrison
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA
| | - Koen K A Van Rompay
- California National Primate Research Center, University of California, 1 Shields Avenue, Davis, CA, 95616, USA.
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96
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Julander JG, Siddharthan V, Park AH, Preston E, Mathur P, Bertolio M, Wang H, Zukor K, Van Wettere AJ, Sinex DG, Morrey JD. Consequences of in utero exposure to Zika virus in offspring of AG129 mice. Sci Rep 2018; 8:9384. [PMID: 29925850 PMCID: PMC6010449 DOI: 10.1038/s41598-018-27611-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/31/2018] [Indexed: 12/20/2022] Open
Abstract
Zika virus (ZIKV) can cause various diseases in offspring after congenital infection. The purpose of this study was to identify disease phenotypes in pups exposed to ZIKV in utero. Female interferon-α/β, -γ receptor knockout mice (AG129) were infected intraperitoneally with ZIKV 7.5 days' post coitus (dpc). Viral RNA, antigen and infectious virus were detected in some, but not all, maternal and fetal tissues at various times during gestation. Fetuses of infected dams had significant intrauterine growth restriction (IUGR), which was more pronounced as females neared parturition. Pups born to infected dams were significantly smaller and had significantly shortened skull lengths, as determined by measurement with a caliper and by micro-CT analysis, as compared with age-matched controls. Growth rates of exposed pups after birth, however, was similar to sham-exposed offspring. Viral RNA was detected in pups of infected dams after birth. A lower survival rate was observed in neonates exposed to ZIKV in utero. A mortality rate of over 50%, attributed to consequences of ZIKV infection, occurred after birth in pups born to infected dams. A transient hearing loss was observed in some animals exposed to virus in utero. No motor deficits or cognitive deficits were detected using running wheel or viral paresis scoring assays. Abnormalities in offspring included smaller size, shorter skull length and increased neonatal mortality, while the only functional deficit we could detect was a low incidence of transient hearing loss.
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Affiliation(s)
- Justin G Julander
- Institute for Antiviral Research, Animal, Dairy, and Veterinary Sciences Department, 5600 Old Main Hill, Utah State University, Logan, Utah, 84322-5600, USA.
| | - Venkatraman Siddharthan
- Institute for Antiviral Research, Animal, Dairy, and Veterinary Sciences Department, 5600 Old Main Hill, Utah State University, Logan, Utah, 84322-5600, USA
| | - Albert H Park
- Division of Otolaryngology- Head and Neck Surgery, University of Utah, 50 N Medical Dr., Salt Lake City, UT, USA
| | - Elizabeth Preston
- Audiology Division, Department of Communicative Disorders and Deaf Education, Utah State University, 2620 Old Main Hill, Logan, UT, 84322-2620, USA
| | - Pranav Mathur
- Department of Neurobiology and Anatomy, University of Utah, 1795 E South Campus Drive, Salt Lake City, UT, 84112, USA
| | - Michael Bertolio
- Institute for Antiviral Research, Animal, Dairy, and Veterinary Sciences Department, 5600 Old Main Hill, Utah State University, Logan, Utah, 84322-5600, USA
| | - Hong Wang
- Institute for Antiviral Research, Animal, Dairy, and Veterinary Sciences Department, 5600 Old Main Hill, Utah State University, Logan, Utah, 84322-5600, USA
| | - Katherine Zukor
- Institute for Antiviral Research, Animal, Dairy, and Veterinary Sciences Department, 5600 Old Main Hill, Utah State University, Logan, Utah, 84322-5600, USA
| | - Arnaud J Van Wettere
- Utah Veterinary Diagnostics Laboratory, Utah State University, 950 E 1400 N, Logan, UT, 84341, USA
| | - Donal G Sinex
- Department of Biology, Utah State University, 5305 Old Main Hill, Logan, UT, 84322-5305, USA
| | - John D Morrey
- Institute for Antiviral Research, Animal, Dairy, and Veterinary Sciences Department, 5600 Old Main Hill, Utah State University, Logan, Utah, 84322-5600, USA
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97
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Ribeiro MR, Moreli JB, Marques RE, Papa MP, Meuren LM, Rahal P, de Arruda LB, Oliani AH, Oliani DCMV, Oliani SM, Narayanan A, Nogueira ML. Zika-virus-infected human full-term placental explants display pro-inflammatory responses and undergo apoptosis. Arch Virol 2018; 163:2687-2699. [PMID: 29876782 DOI: 10.1007/s00705-018-3911-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 05/31/2018] [Indexed: 12/14/2022]
Abstract
Zika virus (ZIKV) is a flavivirus that has been highly correlated with the development of neurological disorders and other malformations in newborns and stillborn fetuses after congenital infection. This association is supported by the presence of ZIKV in the fetal brain and amniotic fluid, and findings suggest that infection of the placental barrier is a critical step for fetal ZIKV infection in utero. Therefore, relevant models to investigate the interaction between ZIKV and placental tissues are essential for understanding the pathogenesis of Zika syndrome. In this report, we demonstrate that explant tissue from full-term human placentas sustains a productive ZIKV infection, though the results depend on the strain. Viral infection was found to be associated with pro-inflammatory cytokine expression and apoptosis of the infected tissue, and these findings confirm that placental explants are targets of ZIKV replication. We propose that human placental explants are useful as a model for studying ZIKV infection ex vivo.
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Affiliation(s)
- Milene Rocha Ribeiro
- Department of Biology, School of Biosciences, Humanities and the Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil.,Virology Research Laboratory, Department of Dermatological, Infectious, and Parasitic Diseases, São José do Rio Preto School of Medicine (FAMERP), São José do Rio Preto, São Paulo, Brazil
| | | | - Rafael Elias Marques
- Brazilian Biosciences National Laboratory (LNBio), National Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Michelle Premazzi Papa
- Paulo de Góes Department of Microbiology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Lana Monteiro Meuren
- Paulo de Góes Department of Microbiology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Paula Rahal
- Department of Biology, School of Biosciences, Humanities and the Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | - Luciana Barros de Arruda
- Paulo de Góes Department of Microbiology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Antonio Helio Oliani
- Virology Research Laboratory, Department of Dermatological, Infectious, and Parasitic Diseases, São José do Rio Preto School of Medicine (FAMERP), São José do Rio Preto, São Paulo, Brazil
| | - Denise Cristina Mós Vaz Oliani
- Virology Research Laboratory, Department of Dermatological, Infectious, and Parasitic Diseases, São José do Rio Preto School of Medicine (FAMERP), São José do Rio Preto, São Paulo, Brazil
| | - Sonia Maria Oliani
- Department of Biology, School of Biosciences, Humanities and the Exact Sciences, São Paulo State University (UNESP), São José do Rio Preto, São Paulo, Brazil
| | | | - Maurício Lacerda Nogueira
- Virology Research Laboratory, Department of Dermatological, Infectious, and Parasitic Diseases, São José do Rio Preto School of Medicine (FAMERP), São José do Rio Preto, São Paulo, Brazil.
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98
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Rabelo K, Souza LJ, Salomão NG, Oliveira ERA, Sentinelli LDP, Lacerda MS, Saraquino PB, Rosman FC, Basílio-de-Oliveira R, Carvalho JJ, Paes MV. Placental Inflammation and Fetal Injury in a Rare Zika Case Associated With Guillain-Barré Syndrome and Abortion. Front Microbiol 2018; 9:1018. [PMID: 29867903 PMCID: PMC5964188 DOI: 10.3389/fmicb.2018.01018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/30/2018] [Indexed: 01/08/2023] Open
Abstract
Zika virus (ZIKV) is an emerging virus involved in recent outbreaks in Brazil. The association between the virus and Guillain-Barré syndrome (GBS) or congenital disorders has raised a worldwide concern. In this work, we investigated a rare Zika case, which was associated with GBS and spontaneous retained abortion. Using specific anti-ZIKV staining, the virus was identified in placenta (mainly in Hofbauer cells) and in several fetal tissues, such as brain, lungs, kidneys, skin and liver. Histological analyses of the placenta and fetal organs revealed different types of tissue abnormalities, which included inflammation, hemorrhage, edema and necrosis in placenta, as well as tissue disorganization in the fetus. Increased cellularity (Hofbauer cells and TCD8+ lymphocytes), expression of local pro-inflammatory cytokines such as IFN-γ and TNF-α, and other markers, such as RANTES/CCL5 and VEGFR2, supported placental inflammation and dysfunction. The commitment of the maternal-fetal link in association with fetal damage gave rise to a discussion regarding the influence of the maternal immunity toward the fetal development. Findings presented in this work may help understanding the ZIKV immunopathogenesis under the rare contexts of spontaneous abortions in association with GBS.
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Affiliation(s)
- Kíssila Rabelo
- Laboratório de Ultraestrutura e Biologia Tecidual, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luiz J Souza
- Faculdade de Medicina de Campos, Campos dos Goytacazes, Rio de Janeiro, Brazil
| | - Natália G Salomão
- Laboratório Interdisciplinar de Pesquisas Médicas, Instituto Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Edson R A Oliveira
- Laboratório de Modelagem Molecular, Instituto de Química Orgânica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Marcelle S Lacerda
- Faculdade de Medicina de Campos, Campos dos Goytacazes, Rio de Janeiro, Brazil
| | - Pedro B Saraquino
- Faculdade de Medicina de Campos, Campos dos Goytacazes, Rio de Janeiro, Brazil
| | - Fernando C Rosman
- Anatomia Patológica, Hospital Municipal Jesus, Rio de Janeiro, Brazil
| | | | - Jorge J Carvalho
- Laboratório de Ultraestrutura e Biologia Tecidual, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marciano V Paes
- Laboratório Interdisciplinar de Pesquisas Médicas, Instituto Oswaldo Cruz, Rio de Janeiro, Brazil
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99
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Gorman MJ, Caine EA, Zaitsev K, Begley MC, Weger-Lucarelli J, Uccellini MB, Tripathi S, Morrison J, Yount BL, Dinnon KH, Rückert C, Young MC, Zhu Z, Robertson SJ, McNally KL, Ye J, Cao B, Mysorekar IU, Ebel GD, Baric RS, Best SM, Artyomov MN, Garcia-Sastre A, Diamond MS. An Immunocompetent Mouse Model of Zika Virus Infection. Cell Host Microbe 2018; 23:672-685.e6. [PMID: 29746837 PMCID: PMC5953559 DOI: 10.1016/j.chom.2018.04.003] [Citation(s) in RCA: 163] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/16/2018] [Accepted: 04/10/2018] [Indexed: 01/08/2023]
Abstract
Progress toward understanding Zika virus (ZIKV) pathogenesis is hindered by lack of immunocompetent small animal models, in part because ZIKV fails to effectively antagonize Stat2-dependent interferon (IFN) responses in mice. To address this limitation, we first passaged an African ZIKV strain (ZIKV-Dak-41525) through Rag1-/- mice to obtain a mouse-adapted virus (ZIKV-Dak-MA) that was more virulent than ZIKV-Dak-41525 in mice treated with an anti-Ifnar1 antibody. A G18R substitution in NS4B was the genetic basis for the increased replication, and resulted in decreased IFN-β production, diminished IFN-stimulated gene expression, and the greater brain infection observed with ZIKV-Dak-MA. To generate a fully immunocompetent mouse model of ZIKV infection, human STAT2 was introduced into the mouse Stat2 locus (hSTAT2 KI). Subcutaneous inoculation of pregnant hSTAT2 KI mice with ZIKV-Dak-MA resulted in spread to the placenta and fetal brain. An immunocompetent mouse model of ZIKV infection may prove valuable for evaluating countermeasures to limit disease.
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Affiliation(s)
- Matthew J Gorman
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - Elizabeth A Caine
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Konstantin Zaitsev
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA; Computer Technologies Department, ITMO University, St. Petersburg, Russia
| | - Matthew C Begley
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Epidemiology, University of North Caroline at Chapel Hill, Chapel Hill, NC, USA
| | - James Weger-Lucarelli
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Melissa B Uccellini
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Shashank Tripathi
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Juliet Morrison
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Boyd L Yount
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Epidemiology, University of North Caroline at Chapel Hill, Chapel Hill, NC, USA
| | - Kenneth H Dinnon
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Epidemiology, University of North Caroline at Chapel Hill, Chapel Hill, NC, USA
| | - Claudia Rückert
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Michael C Young
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Zhe Zhu
- Department of Medicine, Division of Regenerative Medicine, University of California, San Diego, School of Medicine, La Jolla, CA, USA
| | - Shelly J Robertson
- Laboratory of Virology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, NIH, Hamilton, MT, USA
| | - Kristin L McNally
- Laboratory of Virology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, NIH, Hamilton, MT, USA
| | - Jing Ye
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Bin Cao
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, USA
| | - Indira U Mysorekar
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA; Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, USA
| | - Gregory D Ebel
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Ralph S Baric
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Department of Epidemiology, University of North Caroline at Chapel Hill, Chapel Hill, NC, USA
| | - Sonja M Best
- Laboratory of Virology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, NIH, Hamilton, MT, USA
| | - Maxim N Artyomov
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA; The Center of Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, MO, USA
| | - Adolfo Garcia-Sastre
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Medicine, Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Michael S Diamond
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA; Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA; Department of Molecular Microbiology, Washington University School of Medicine, St. Louis, MO, USA; The Center of Human Immunology and Immunotherapy Programs, Washington University School of Medicine, St. Louis, MO, USA.
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100
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Fricke EM, Elgin TG, Gong H, Reese J, Gibson-Corley KN, Weiss RM, Zimmerman K, Bowdler NC, Kalantera KM, Mills DA, Underwood MA, McElroy SJ. Lipopolysaccharide-induced maternal inflammation induces direct placental injury without alteration in placental blood flow and induces a secondary fetal intestinal injury that persists into adulthood. Am J Reprod Immunol 2018; 79:e12816. [PMID: 29369434 PMCID: PMC5908742 DOI: 10.1111/aji.12816] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 01/02/2018] [Indexed: 12/30/2022] Open
Abstract
PROBLEM Premature birth complicates 10%-12% of deliveries. Infection and inflammation are the most common etiologies and are associated with increased offspring morbidity and mortality. We hypothesize that lipopolysaccharide (LPS)-induced maternal inflammation causes direct placenta injury and subsequent injury to the fetal intestine. METHOD OF STUDY Pregnant C57Bl6 mice were injected intraperitoneally on day 15.5 with 100 μg/kg LPS or saline. Maternal serum, amniotic fluid, placental samples, and ileal samples of offspring were obtained assessed for inflammation and/or injury. Maternal placental ultrasounds were performed. Placental DNA was isolated for microbiome analysis. RESULTS Maternal injection with LPS caused elevated IL-1β, IL-10, IL-6, KC-GRO, and TNF. Placental tissue showed increased IL-1β, IL-6, and KC-GRO and decreased IL-10, but no changes were observed in amniotic fluid. Placental histology demonstrated LPS-induced increases in mineralization and necrosis, but no difference in placental blood flow. Most placentas had no detectable microbiome. Exposure to maternal LPS induced significant injury to the ilea of the offspring. CONCLUSION Lipopolysaccharide causes a maternal inflammatory response that is mirrored in the placenta. Placental histology demonstrates structural changes; however, placental blood flow is preserved. LPS also induces an indirect intestinal injury in the offspring that lasts beyond the neonatal period.
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Affiliation(s)
| | | | | | - Jeff Reese
- Vanderbilt University, Nashville, TN, USA
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