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Ritter M, Canus L, Gautam A, Vallet T, Zhong L, Lalande A, Boson B, Gandhi A, Bodoirat S, Burlaud-Gaillard J, Freitas N, Roingeard P, Barr JN, Lotteau V, Legros V, Mathieu C, Cosset FL, Denolly S. The low-density lipoprotein receptor and apolipoprotein E associated with CCHFV particles mediate CCHFV entry into cells. Nat Commun 2024; 15:4542. [PMID: 38806525 PMCID: PMC11133370 DOI: 10.1038/s41467-024-48989-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 05/13/2024] [Indexed: 05/30/2024] Open
Abstract
The Crimean-Congo hemorrhagic fever virus (CCHFV) is an emerging pathogen of the Orthonairovirus genus that can cause severe and often lethal hemorrhagic diseases in humans. CCHFV has a broad tropism and can infect a variety of species and tissues. Here, by using gene silencing, blocking antibodies or soluble receptor fragments, we identify the low-density lipoprotein receptor (LDL-R) as a CCHFV entry factor. The LDL-R facilitates binding of CCHFV particles but does not allow entry of Hazara virus (HAZV), another member of the genus. In addition, we show that apolipoprotein E (apoE), an exchangeable protein that mediates LDL/LDL-R interaction, is incorporated on CCHFV particles, though not on HAZV particles, and enhances their specific infectivity by promoting an LDL-R dependent entry. Finally, we show that molecules that decrease LDL-R from the surface of target cells could inhibit CCHFV infection. Our study highlights that CCHFV takes advantage of a lipoprotein receptor and recruits its natural ligand to promote entry into cells.
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Affiliation(s)
- Maureen Ritter
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Lola Canus
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Anupriya Gautam
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Thomas Vallet
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Li Zhong
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Alexandre Lalande
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Bertrand Boson
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Apoorv Gandhi
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Sergueï Bodoirat
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Julien Burlaud-Gaillard
- Inserm U1259, Morphogénèse et Antigénicité du VIH et des Virus des Hépatites (MAVIVH), Université de Tours and CHRU de Tours, 37032, Tours, France
- Université de Tours and CHRU de Tours, Plateforme IBiSA de Microscopie Electronique, Tours, France
| | - Natalia Freitas
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Philippe Roingeard
- Inserm U1259, Morphogénèse et Antigénicité du VIH et des Virus des Hépatites (MAVIVH), Université de Tours and CHRU de Tours, 37032, Tours, France
- Université de Tours and CHRU de Tours, Plateforme IBiSA de Microscopie Electronique, Tours, France
| | - John N Barr
- Faculty of Biological Sciences and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | | | - Vincent Legros
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
- Campus vétérinaire de Lyon, VetAgro Sup, Université de Lyon, Lyon, Marcy-l'Etoile, France
| | - Cyrille Mathieu
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - François-Loïc Cosset
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France.
| | - Solène Denolly
- CIRI - Centre International de Recherche en Infectiologie, Univ. Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France.
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Bartosh UI, Dome AS, Zhukova NV, Karitskaya PE, Stepanov GA. CRISPR/Cas9 as a New Antiviral Strategy for Treating Hepatitis Viral Infections. Int J Mol Sci 2023; 25:334. [PMID: 38203503 PMCID: PMC10779197 DOI: 10.3390/ijms25010334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/19/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
Hepatitis is an inflammatory liver disease primarily caused by hepatitis A (HAV), B (HBV), C (HCV), D (HDV), and E (HEV) viruses. The chronic forms of hepatitis resulting from HBV and HCV infections can progress to cirrhosis or hepatocellular carcinoma (HCC), while acute hepatitis can lead to acute liver failure, sometimes resulting in fatality. Viral hepatitis was responsible for over 1 million reported deaths annually. The treatment of hepatitis caused by viral infections currently involves the use of interferon-α (IFN-α), nucleoside inhibitors, and reverse transcriptase inhibitors (for HBV). However, these methods do not always lead to a complete cure for viral infections, and chronic forms of the disease pose significant treatment challenges. These facts underscore the urgent need to explore novel drug developments for the treatment of viral hepatitis. The discovery of the CRISPR/Cas9 system and the subsequent development of various modifications of this system have represented a groundbreaking advance in the quest for innovative strategies in the treatment of viral infections. This technology enables the targeted disruption of specific regions of the genome of infectious agents or the direct manipulation of cellular factors involved in viral replication by introducing a double-strand DNA break, which is targeted by guide RNA (spacer). This review provides a comprehensive summary of our current knowledge regarding the application of the CRISPR/Cas system in the regulation of viral infections caused by HAV, HBV, and HCV. It also highlights new strategies for drug development aimed at addressing both acute and chronic forms of viral hepatitis.
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Affiliation(s)
| | | | | | | | - Grigory A. Stepanov
- The Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Novosibirsk 630090, Russia; (U.I.B.); (A.S.D.); (N.V.Z.); (P.E.K.)
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3
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Tiwari D, Srivastava G, Indari O, Tripathi V, Siddiqi MI, Jha HC. An in-silico insight into the predictive interaction of Apolipoprotein-E with Epstein-Barr virus proteins and their probable role in mediating Alzheimer's disease. J Biomol Struct Dyn 2023; 41:8918-8926. [PMID: 36307908 DOI: 10.1080/07391102.2022.2138978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 10/16/2022] [Indexed: 10/31/2022]
Abstract
Recent reports suggest that persistent Epstein-Barr virus (EBV) infection and its recurrent reactivation could instigate the formation of proteinaceous plaques in the brain: a hallmark of Alzheimer's disease (AD). Interestingly, a major genetic risk factor of AD, the apolipoprotein E (ApoE), could also influence the outcome of EBV infection in an individual. The ApoE is believed to influence the proteinaceous plaque clearance from the brain, and its defective functioning could result in the aggregate deposition. The persistent presence of EBV infection in a genetically predisposed individual could create a perfect recipe for severe neurodegenerative consequences. Therefore, in the present study, we investigated the possible interactions between ApoE and various EBV proteins using computational tools. Our results showed possibly stable de-novo interactions between the C-terminal domain of ApoE3 and EBV proteins: EBV nuclear antigen-1 (EBNA1) and BamHI Z fragment leftward open reading frame-1 (BZLF1). The EBNA1 protein of EBV plays a crucial role in establishing latency and replication of the virus. Whereas BZLF1 is involved in the lytic replication cycle. The proposed interaction of EBV proteins at the ligand-binding site of ApoE3 on CTD could interfere with- its capability to sequester amyloid fragments and, hence their clearance from the brain giving rise to AD pathology. This study provides a new outlook on EBV's underexplored role in AD development and paves the way for novel avenues of investigation which could further our understanding of AD pathogenesis.Communicated by Ramaswamy H. Sarma[Figure: see text].
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Affiliation(s)
- Deeksha Tiwari
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Gaurava Srivastava
- Division of Biochemistry and Structural Biology, CSIR-CDRI, Lucknow, India
| | - Omkar Indari
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Vijay Tripathi
- Department of Molecular and Cellular Engineering, Jacob Institute of Biotechnology and Bioengineering, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, India
| | | | - Hem Chandra Jha
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
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Zhang J, Zhu Y, Wang X, Wang J. 25-hydroxycholesterol: an integrator of antiviral ability and signaling. Front Immunol 2023; 14:1268104. [PMID: 37781400 PMCID: PMC10533924 DOI: 10.3389/fimmu.2023.1268104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 08/29/2023] [Indexed: 10/03/2023] Open
Abstract
Cholesterol, as an important component in mammalian cells, is efficient for viral entry, replication, and assembly. Oxysterols especially hydroxylated cholesterols are recognized as novel regulators of the innate immune response. The antiviral ability of 25HC (25-Hydroxycholesterol) is uncovered due to its role as a metabolic product of the interferon-stimulated gene CH25H (cholesterol-25-hydroxylase). With the advancement of research, the biological functions of 25HC and its structural functions have been interpreted gradually. Furthermore, the underlying mechanisms of antiviral effect of 25HC are not only limited to interferon regulation. Taken up by the special biosynthetic ways and structure, 25HC contributes to modulate not only the cholesterol metabolism but also autophagy and inflammation by regulating signaling pathways. The outcome of modulation by 25HC seems to be largely dependent on the cell types, viruses and context of cell microenvironments. In this paper, we review the recent proceedings on the regulatory effect of 25HC on interferon-independent signaling pathways related to its antiviral capacity and its putative underlying mechanisms.
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Affiliation(s)
- Jialu Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing, China
- College of Veterinary Medicine, Sanya Institute of China Agricultural University, Sanya, China
| | - Yaohong Zhu
- College of Veterinary Medicine, China Agricultural University, Beijing, China
- College of Veterinary Medicine, Sanya Institute of China Agricultural University, Sanya, China
| | - Xiaojia Wang
- College of Veterinary Medicine, China Agricultural University, Beijing, China
- College of Veterinary Medicine, Sanya Institute of China Agricultural University, Sanya, China
| | - Jiufeng Wang
- College of Veterinary Medicine, China Agricultural University, Beijing, China
- College of Veterinary Medicine, Sanya Institute of China Agricultural University, Sanya, China
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Chen F, Ke Q, Wei W, Cui L, Wang Y. Apolipoprotein E and viral infection: Risks and Mechanisms. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 33:529-542. [PMID: 37588688 PMCID: PMC10425688 DOI: 10.1016/j.omtn.2023.07.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 08/18/2023]
Abstract
Apolipoprotein E (ApoE) is a multifunctional protein critical for lipid metabolism and cholesterol homeostasis. In addition to being a well known genetic determinant of both neurodegenerative and cardiovascular diseases, ApoE is frequently involved in various viral infection-related diseases. Human ApoE protein is functionally polymorphic with three isoforms, namely, ApoE2, ApoE3, and ApoE4, with markedly altered protein structures and functions. ApoE4 is associated with increased susceptibility to infection with herpes simplex virus type-1 and HIV. Conversely, ApoE4 protects against hepatitis C virus and hepatitis B virus infection. With the outbreak of coronavirus disease 2019, ApoE4 has been shown to determine the incidence and progression of severe acute respiratory syndrome coronavirus 2 infection. These findings clearly indicate the critical role of ApoE in viral infection. Furthermore, ApoE polymorphism has various or even opposite effects in these infection processes, which are partly related to the structural features that distinguish the different ApoE statuses. In the current review, we summarize the emerging relationship between ApoE and viral infection, discuss the potential mechanisms, and identify future directions that may help to advance our understanding of the link between ApoE and viral infection.
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Affiliation(s)
- Feng Chen
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, China
| | - Qiongwei Ke
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, China
| | - Wenyan Wei
- Department of Gerontology, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, China
| | - Lili Cui
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, China
| | - Yan Wang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, China
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Maya S, Hershkovich L, Cardozo-Ojeda EF, Shirvani-Dastgerdi E, Srinivas J, Shekhtman L, Uprichard SL, Berneshawi AR, Cafiero TR, Dahari H, Ploss A. Hepatitis delta virus RNA decline post-inoculation in human NTCP transgenic mice is biphasic. mBio 2023; 14:e0100823. [PMID: 37436080 PMCID: PMC10470517 DOI: 10.1128/mbio.01008-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 07/13/2023] Open
Abstract
Chronic infection with hepatitis B and delta viruses (HDV) is the most serious form of viral hepatitis due to more severe manifestations of an accelerated progression to liver fibrosis, cirrhosis, and hepatocellular carcinoma. We characterized early HDV kinetics post-inoculation and incorporated mathematical modeling to provide insights into host-HDV dynamics. We analyzed HDV RNA serum viremia in 192 immunocompetent (C57BL/6) and immunodeficient (NRG) mice that did or did not transgenically express the HDV receptor-human sodium taurocholate co-transporting polypeptide (hNTCP). Kinetic analysis indicates an unanticipated biphasic decline consisting of a sharp first-phase and slower second-phase decline regardless of immunocompetence. HDV decline after re-inoculation again followed a biphasic decline; however, a steeper second-phase HDV decline was observed in NRG-hNTCP mice compared to NRG mice. HDV-entry inhibitor bulevirtide administration and HDV re-inoculation indicated that viral entry and receptor saturation are not major contributors to clearance, respectively. The biphasic kinetics can be mathematically modeled by assuming the existence of a non-specific-binding compartment with a constant on/off-rate and the steeper second-phase decline by a loss of bound virus that cannot be returned as free virus to circulation. The model predicts that free HDV is cleared with a half-life of 35 minutes (standard error, SE: 6.3), binds to non-specific cells with a rate of 0.05 per hour (SE: 0.01), and returns as free virus with a rate of 0.11 per hour (SE: 0.02). Characterizing early HDV-host kinetics elucidates how quickly HDV is either cleared or bound depending on the immunological background and hNTCP presence. IMPORTANCE The persistence phase of HDV infection has been studied in some animal models; however, the early kinetics of HDV in vivo is incompletely understood. In this study, we characterize an unexpectedly HDV biphasic decline post-inoculation in immunocompetent and immunodeficient mouse models and use mathematical modeling to provide insights into HDV-host dynamics.
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Affiliation(s)
- Stephanie Maya
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
| | - Leeor Hershkovich
- Department of Medicine, The Program for Experimental & Theoretical Modeling, Division of Hepatology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA
| | - E. Fabian Cardozo-Ojeda
- Department of Medicine, The Program for Experimental & Theoretical Modeling, Division of Hepatology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | | | - Jay Srinivas
- Department of Medicine, The Program for Experimental & Theoretical Modeling, Division of Hepatology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA
| | - Louis Shekhtman
- Department of Medicine, The Program for Experimental & Theoretical Modeling, Division of Hepatology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA
| | - Susan L. Uprichard
- Department of Medicine, The Program for Experimental & Theoretical Modeling, Division of Hepatology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA
| | - Andrew R. Berneshawi
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
| | - Thomas R. Cafiero
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
| | - Harel Dahari
- Department of Medicine, The Program for Experimental & Theoretical Modeling, Division of Hepatology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois, USA
| | - Alexander Ploss
- Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
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Qin B, Shen S, Lai J, Yang W, Feng L, Ding J. Inhibition of Hepatitis B Virus (HBV) replication and antigen expression by Brucea javanica (L.) Merr. oil emulsion. Front Cell Infect Microbiol 2023; 13:1193775. [PMID: 37560319 PMCID: PMC10408445 DOI: 10.3389/fcimb.2023.1193775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 07/03/2023] [Indexed: 08/11/2023] Open
Abstract
Introduction The seeds of Brucea javanica (L.) Merr. (BJ) have been traditionally used to treat various types of cancers for many years in China. In this study, we systematically investigated a BJ oil emulsion (BJOE) produced from BJ seeds with the purpose of evaluating its antiviral effect against hepatitis B virus (HBV). Methods HepG2.215 (a wild-type HBV cell line), HepG2, and Huh7, transfected with wildtype (WT) or lamivudine-resistance mutant (LMV-MT) HBV replicon plasmids, were treated with different doses of BJOE and then used for pharmacodynamic evaluation. Cell viability was determined using CCK8 assay. The levels of HBsAg/HBeAg in cell cultured supernatant, HBcAg in cell lysis solution, and HBV DNA in both were evaluated. Results BJOE at ≤5 mg/ml was nontoxic to carcinoma cell lines, but could significantly inhibit WT/LMV-MT HBV replication and HBs/e/c antigen expression in a dose-dependent manner by upregulating interleukin-6 (IL-6), demonstrating that it possesses moderate anti-HBV activity. As one of the major components of BJOE, bruceine B was found to play a dominant role in IL-6 induction and HBV inhibition. Discussion Our results demonstrated that BJOE suppressed HBV replication by stimulating IL-6, indicating that it has promising clinical therapeutic potential for both WT and LMV-MT HBV.
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Affiliation(s)
- Bo Qin
- Clinical Laboratory, Shaoxing Maternity and Child Health Care Hospital, Shaoxing, China
- Obstetrics and Gynecology Hospital of Shaoxing University, Shaoxing, China
| | - Shu Shen
- Obstetrics and Gynecology Hospital of Shaoxing University, Shaoxing, China
- Department of Gynecology, Shaoxing Maternity and Child Health Care Hospital, Shaoxing, China
| | - Juan Lai
- GeneMind Biosciences Company Limited, Shenzhen, China
| | - Wei Yang
- GeneMind Biosciences Company Limited, Shenzhen, China
| | - Lili Feng
- Obstetrics and Gynecology Hospital of Shaoxing University, Shaoxing, China
- Department of Anesthesiology, Shaoxing Maternity and Child Health Care Hospital, Shaoxing, China
| | - Jiefeng Ding
- Clinical Laboratory, Shaoxing Maternity and Child Health Care Hospital, Shaoxing, China
- Obstetrics and Gynecology Hospital of Shaoxing University, Shaoxing, China
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Pham MT, Lee JY, Ritter C, Thielemann R, Meyer J, Haselmann U, Funaya C, Laketa V, Rohr K, Bartenschlager R. Endosomal egress and intercellular transmission of hepatic ApoE-containing lipoproteins and its exploitation by the hepatitis C virus. PLoS Pathog 2023; 19:e1011052. [PMID: 37506130 PMCID: PMC10411793 DOI: 10.1371/journal.ppat.1011052] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 08/09/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
Liver-generated plasma Apolipoprotein E (ApoE)-containing lipoproteins (LPs) (ApoE-LPs) play central roles in lipid transport and metabolism. Perturbations of ApoE can result in several metabolic disorders and ApoE genotypes have been associated with multiple diseases. ApoE is synthesized at the endoplasmic reticulum and transported to the Golgi apparatus for LP assembly; however, the ApoE-LPs transport pathway from there to the plasma membrane is largely unknown. Here, we established an integrative imaging approach based on a fully functional fluorescently tagged ApoE. We found that newly synthesized ApoE-LPs accumulate in CD63-positive endosomes of hepatocytes. In addition, we observed the co-egress of ApoE-LPs and CD63-positive intraluminal vesicles (ILVs), which are precursors of extracellular vesicles (EVs), along the late endosomal trafficking route in a microtubule-dependent manner. A fraction of ApoE-LPs associated with CD63-positive EVs appears to be co-transmitted from cell to cell. Given the important role of ApoE in viral infections, we employed as well-studied model the hepatitis C virus (HCV) and found that the viral replicase component nonstructural protein 5A (NS5A) is enriched in ApoE-containing ILVs. Interaction between NS5A and ApoE is required for the efficient release of ILVs containing HCV RNA. These vesicles are transported along the endosomal ApoE egress pathway. Taken together, our data argue for endosomal egress and transmission of hepatic ApoE-LPs, a pathway that is hijacked by HCV. Given the more general role of EV-mediated cell-to-cell communication, these insights provide new starting points for research into the pathophysiology of ApoE-related metabolic and infection-related disorders.
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Affiliation(s)
- Minh-Tu Pham
- Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Diseases Research, Heidelberg University, Heidelberg, Germany
- German Center for Infection Research (DZIF), Partner Site Heidelberg, Heidelberg, Germany
| | - Ji-Young Lee
- Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Diseases Research, Heidelberg University, Heidelberg, Germany
- German Center for Infection Research (DZIF), Partner Site Heidelberg, Heidelberg, Germany
| | - Christian Ritter
- BioQuant Center, IPMB, Biomedical Computer Vision Group, Heidelberg University, Heidelberg, Germany
| | - Roman Thielemann
- BioQuant Center, IPMB, Biomedical Computer Vision Group, Heidelberg University, Heidelberg, Germany
| | - Janis Meyer
- BioQuant Center, IPMB, Biomedical Computer Vision Group, Heidelberg University, Heidelberg, Germany
| | - Uta Haselmann
- Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Diseases Research, Heidelberg University, Heidelberg, Germany
| | - Charlotta Funaya
- Electron Microscopy Core Facility (EMCF), Heidelberg University, Heidelberg, Germany
| | - Vibor Laketa
- German Center for Infection Research (DZIF), Partner Site Heidelberg, Heidelberg, Germany
- Department of Infectious Diseases, Virology, Center for Integrative Infectious Diseases Research, Heidelberg University, Heidelberg, Germany
| | - Karl Rohr
- BioQuant Center, IPMB, Biomedical Computer Vision Group, Heidelberg University, Heidelberg, Germany
| | - Ralf Bartenschlager
- Department of Infectious Diseases, Molecular Virology, Center for Integrative Infectious Diseases Research, Heidelberg University, Heidelberg, Germany
- German Center for Infection Research (DZIF), Partner Site Heidelberg, Heidelberg, Germany
- Division Virus-Associated Carcinogenesis, German Cancer Research Center (DKFZ), Heidelberg, Germany
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Vieyres G, Pietschmann T. The role of human lipoproteins for hepatitis C virus persistence. Curr Opin Virol 2023; 60:101327. [PMID: 37031484 DOI: 10.1016/j.coviro.2023.101327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 01/23/2023] [Accepted: 03/05/2023] [Indexed: 04/11/2023]
Abstract
Hepatitis C virus (HCV) is a hepatotropic virus that establishes a chronic infection in most individuals. Effective treatments are available; however, many patients are not aware of their infection. Consequently, they do not receive treatment and HCV transmission remains high, particularly among groups at high risk of exposure such as people who inject intravenous drugs. A prophylactic vaccine may reduce HCV transmission, but is currently not available. HCV has evolved immune evasion strategies, which facilitate persistence and complicate development of a protective vaccine. The peculiar association of HCV particles with human lipoproteins is thought to facilitate evasion from humoral immune response and viral homing to liver cells. A better understanding of these aspects provides the basis for development of protective vaccination strategies. Here, we review key information about the composition of HCV particles, the mechanisms mediating lipoprotein incorporation, and the functional consequences of this interaction.
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Affiliation(s)
- Gabrielle Vieyres
- Leibniz Institute of Virology, Hamburg, Germany; Integrative Analysis of Pathogen-Induced Compartments, Leibniz ScienceCampus InterACt, Hamburg, Germany
| | - Thomas Pietschmann
- Institute for Experimental Virology, TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Medical School Hannover and the Helmholtz Centre for Infection Research, Hanover, Germany.
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Chen F, Chen Y, Ke Q, Wang Y, Gong Z, Chen X, Cai Y, Li S, Sun Y, Peng X, Ji Y, Zhang T, Wu W, Cui L, Wang Y. ApoE4 associated with severe COVID-19 outcomes via downregulation of ACE2 and imbalanced RAS pathway. J Transl Med 2023; 21:103. [PMID: 36759834 PMCID: PMC9910247 DOI: 10.1186/s12967-023-03945-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 01/31/2023] [Indexed: 02/11/2023] Open
Abstract
BACKGROUND Recent numerous epidemiology and clinical association studies reported that ApoE polymorphism might be associated with the risk and severity of coronavirus disease 2019 (COVID-19), and yielded inconsistent results. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection relies on its spike protein binding to angiotensin-converting enzyme 2 (ACE2) receptor expressed on host cell membranes. METHODS A meta-analysis was conducted to clarify the association between ApoE polymorphism and the risk and severity of COVID-19. Multiple protein interaction assays were utilized to investigate the potential molecular link between ApoE and the SARS-CoV-2 primary receptor ACE2, ApoE and spike protein. Immunoblotting and immunofluorescence staining methods were used to access the regulatory effect of different ApoE isoform on ACE2 protein expression. RESULTS ApoE gene polymorphism (ε4 carrier genotypes VS non-ε4 carrier genotypes) is associated with the increased risk (P = 0.0003, OR = 1.44, 95% CI 1.18-1.76) and progression (P < 0.00001, OR = 1.85, 95% CI 1.50-2.28) of COVID-19. ApoE interacts with both ACE2 and the spike protein but did not show isoform-dependent binding effects. ApoE4 significantly downregulates ACE2 protein expression in vitro and in vivo and subsequently decreases the conversion of Ang II to Ang 1-7. CONCLUSIONS ApoE4 increases SARS-CoV-2 infectivity in a manner that may not depend on differential interactions with the spike protein or ACE2. Instead, ApoE4 downregulates ACE2 protein expression and subsequently the dysregulation of renin-angiotensin system (RAS) may provide explanation by which ApoE4 exacerbates COVID-19 disease.
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Affiliation(s)
- Feng Chen
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China ,grid.419010.d0000 0004 1792 7072Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences & Yunnan Province Kunming Institute of Zoology Chinese Academy of Sciences, Kunming, Yunnan China
| | - Yanting Chen
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China ,grid.33199.310000 0004 0368 7223Department of Neurology, Huazhong University of Science and Technology Union Shenzhen Hospital, Shenzhen, China
| | - Qiongwei Ke
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yongxiang Wang
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Zheng Gong
- grid.410560.60000 0004 1760 3078Institute of Laboratory Animal Center, Guangdong Medical University, Zhanjiang, China
| | - Xiongjin Chen
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yujie Cai
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Shengnan Li
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yuanhong Sun
- grid.266871.c0000 0000 9765 6057Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX USA
| | - Xiaoping Peng
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yao Ji
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Tianzhen Zhang
- grid.410560.60000 0004 1760 3078Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Wenxian Wu
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China. .,Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, China. .,Shenzhen Research Institute, Shandong University, Shenzhen, China.
| | - Lili Cui
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.
| | - Yan Wang
- Guangdong Key Laboratory of Age-Related Cardiac and Cerebral Diseases, Department of Neurology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.
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11
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Fei S, Xia J, Ma G, Zhang M, Sun J, Feng M, Wang Y. Apolipoprotein D facilitate the proliferation of BmNPV. Int J Biol Macromol 2022; 223:830-836. [PMID: 36372108 DOI: 10.1016/j.ijbiomac.2022.11.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/30/2022] [Accepted: 11/02/2022] [Indexed: 11/13/2022]
Abstract
The silkworm, Bombyx mori, a model Lepidopteran specie, is an important economic insect. It is specifically infected by Bombyx mori nucleopolyhedrovirus (BmNPV), causing huge losses to the sericulture industry. Therefore, the understandings of the interaction mechanism between BmNPV and the host will help to provide the theoretical basis for the sericulture industry to control BmNPV. Apolipoprotein D (ApoD) is a member of lipid transport family and capable of binding to a variety of lipophilic ligands. ApoD is mainly used in neurodegenerative disease research in mammals, and there is little research on ApoD against viruses. Here, we explored the effects of Bombyx mori Apolipoprotein D (BmApoD) on BmNPV replication. We knocked out and overexpressed BmApoD in BmN cells and infected them with Bombyx mori nucleopolyhedrovirus (BmNPV). The results showed that BmApoD promote the replication of BmNPV in BmN cells. It was also confirmed that BmApoD promote the replication of BmNPV after knocking down BmApoD in silkworm larvae. This study is the first to explore the role of ApoD in insect-virus interactions, providing new insights into the functional role of ApoD.
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Affiliation(s)
- Shigang Fei
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Junming Xia
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Guangyu Ma
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Mengmeng Zhang
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Jingchen Sun
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China.
| | - Min Feng
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China.
| | - Yeyuan Wang
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China.
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12
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Screening for Lipid-Metabolism-Related Genes and Identifying the Diagnostic Potential of ANGPTL6 for HBV-Related Early-Stage Hepatocellular Carcinoma. Biomolecules 2022; 12:biom12111700. [DOI: 10.3390/biom12111700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 11/12/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022] Open
Abstract
Lipid metabolic reprogramming is one of the hallmarks of hepatocarcinogenesis and development. Therefore, lipid-metabolism-related genes may be used as potential biomarkers for hepatocellular carcinoma (HCC). This study aimed to screen for genes with dysregulated expression related to lipid metabolism in HCC and explored the clinical value of these genes. We screened differentially expressed proteins between tumorous and adjacent nontumorous tissues of hepatitis B virus (HBV)-related HCC patients using a Nanoscale Liquid Chromatography–Tandem Mass Spectrometry platform and combined it with transcriptomic data of lipid-metabolism-related genes from the GEO and HPA databases to identify dysregulated genes that may be involved in lipid metabolic processes. The potential clinical values of these genes were explored by bioinformatics online analysis tools (GEPIA, cBioPortal, SurvivalMeth, and TIMER). The expression levels of the secreted protein (angiopoietin-like protein 6, ANGPTL6) in serum were analyzed by ELISA. The ability of serum ANGPTL6 to diagnose early HCC was assessed by ROC curves. The results showed that serum ANGPTL6 could effectively differentiate between HBV-related early HCC patients with normal serum alpha-fetoprotein (AFP) levels and the noncancer group (healthy participants and chronic hepatitis B patients) (AUC = 0.717, 95% CI: from 0.614 to 0.805). Serum ANGPTL6 can be used as a potential second-line biomarker to supplement serum AFP in the early diagnosis of HBV-related HCC.
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13
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Diaz O, Vidalain PO, Ramière C, Lotteau V, Perrin-Cocon L. What role for cellular metabolism in the control of hepatitis viruses? Front Immunol 2022; 13:1033314. [PMID: 36466918 PMCID: PMC9713817 DOI: 10.3389/fimmu.2022.1033314] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/02/2022] [Indexed: 11/26/2023] Open
Abstract
Hepatitis B, C and D viruses (HBV, HCV, HDV, respectively) specifically infect human hepatocytes and often establish chronic viral infections of the liver, thus escaping antiviral immunity for years. Like other viruses, hepatitis viruses rely on the cellular machinery to meet their energy and metabolite requirements for replication. Although this was initially considered passive parasitism, studies have shown that hepatitis viruses actively rewire cellular metabolism through molecular interactions with specific enzymes such as glucokinase, the first rate-limiting enzyme of glycolysis. As part of research efforts in the field of immunometabolism, it has also been shown that metabolic changes induced by viruses could have a direct impact on the innate antiviral response. Conversely, detection of viral components by innate immunity receptors not only triggers the activation of the antiviral defense but also induces in-depth metabolic reprogramming that is essential to support immunological functions. Altogether, these complex triangular interactions between viral components, innate immunity and hepatocyte metabolism may explain why chronic hepatitis infections progressively lead to liver inflammation and progression to cirrhosis, fibrosis and hepatocellular carcinoma (HCC). In this manuscript, we first present a global overview of known connections between the innate antiviral response and cellular metabolism. We then report known molecular mechanisms by which hepatitis viruses interfere with cellular metabolism in hepatocytes and discuss potential consequences on the innate immune response. Finally, we present evidence that drugs targeting hepatocyte metabolism could be used as an innovative strategy not only to deprive viruses of key metabolites, but also to restore the innate antiviral response that is necessary to clear infection.
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Affiliation(s)
- Olivier Diaz
- CIRI, Centre International de Recherche en Infectiologie, Team VIRal Infection, Metabolism and Immunity, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Pierre-Olivier Vidalain
- CIRI, Centre International de Recherche en Infectiologie, Team VIRal Infection, Metabolism and Immunity, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Christophe Ramière
- CIRI, Centre International de Recherche en Infectiologie, Team VIRal Infection, Metabolism and Immunity, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
- Laboratoire de Virologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - Vincent Lotteau
- CIRI, Centre International de Recherche en Infectiologie, Team VIRal Infection, Metabolism and Immunity, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Laure Perrin-Cocon
- CIRI, Centre International de Recherche en Infectiologie, Team VIRal Infection, Metabolism and Immunity, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
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14
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Prange R. Hepatitis B virus movement through the hepatocyte: An update. Biol Cell 2022; 114:325-348. [PMID: 35984727 DOI: 10.1111/boc.202200060] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/26/2022] [Accepted: 08/12/2022] [Indexed: 11/29/2022]
Abstract
Viruses are obligate intracellular pathogens that utilize cellular machinery for many aspects of their propagation and effective egress of virus particles from host cells is one important determinant of virus infectivity. Hijacking host cell processes applies in particular to the hepatitis B virus (HBV), as its DNA genome with about 3 kb in size is one of the smallest viral genomes known. HBV is a leading cause of liver disease and still displays one of the most successful pathogens in human populations worldwide. The extremely successful spread of this virus is explained by its efficient transmission strategies and its versatile particle types, including virions, empty envelopes, naked capsids and others. HBV exploits distinct host trafficking machineries to assemble and release its particle types including nucleocytoplasmic shuttling transport, secretory and exocytic pathways, the Endosomal Sorting Complexes Required for Transport pathway, and the autophagy pathway. Understanding how HBV uses and subverts host membrane trafficking systems offers the chance of obtaining new mechanistic insights into the regulation and function of this essential cellular processes. It can also help to identify potential targets for antiviral interventions. Here, I will provide an overview of HBV maturation, assembly, and budding, with a focus on recent advances, and will point out areas where questions remain that can benefit from future studies. Unless otherwise indicated, almost all presented knowledge was gained from cell culture-based, HBV in vitro -replication and in vitro -infection systems. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Reinhild Prange
- Department of Virology, University Medical Center of the Johannes Gutenberg University Mainz, Augustusplatz, Mainz, D-55131, Germany
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15
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Tréguier Y, Cochard J, Burlaud-Gaillard J, Lemoine R, Chouteau P, Roingeard P, Meunier JC, Maquart M. The envelope protein of Zika virus interacts with apolipoprotein E early in the infectious cycle and this interaction is conserved on the secreted viral particles. Virol J 2022; 19:124. [PMID: 35902969 PMCID: PMC9331583 DOI: 10.1186/s12985-022-01860-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 07/21/2022] [Indexed: 11/23/2022] Open
Abstract
Background Zika virus (ZIKV), a member of the Flaviviridae family, has caused massive outbreaks of infection in tropical areas over the last decade and has now begun spreading to temperate countries. Little is currently known about the specific host factors involved in the intracellular life cycle of ZIKV. Flaviviridae viruses interact closely with host-cell lipid metabolism and associated secretory pathways. Another Flaviviridae, hepatitis C virus, is highly dependent on apolipoprotein E (ApoE) for the completion of its infectious cycle. We therefore investigated whether ZIKV also interacted with this protein. Methods ZIKV infections were performed on both liver and microglia derived cell lines in order to proceed to colocalization analysis and immunoprecipitation assays of ApoE and Zika envelope glycoprotein (Zika E). Transmission electron microscopy combined to immunogold labeling was also performed on the infected cells and related supernatant to study the association of ApoE and Zika E protein in the virus-induced membrane rearrangements and secreted particles, respectively. Finally, the potential of neutralization of anti-ApoE antibodies on ZIKV particles was studied. Result We demonstrated an interaction between ApoE and the Zika E protein. This specific interaction was observed in virus-induced host-cell membrane rearrangements, but also on newly formed intracellular particles. The partial neutralizing effect of anti-ApoE antibody and the immunogold labeling of the two proteins on secreted virions indicates that this interaction is conserved during ZIKV intracellular trafficking and release. Conclusions These data suggest that another member of the Flaviviridae also interacts with ApoE, indicating that this could be a common mechanism for the viruses from this family.
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Affiliation(s)
- Yannick Tréguier
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France
| | - Jade Cochard
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France
| | - Julien Burlaud-Gaillard
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France.,Plateforme IBiSA des Microscopies, Université de Tours et CHU de Tours, Tours, France
| | - Roxane Lemoine
- Plateforme B Cell Ressources, EA4245 T2I, Université de Tours, Tours, France
| | - Philippe Chouteau
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France
| | - Philippe Roingeard
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France. .,Plateforme IBiSA des Microscopies, Université de Tours et CHU de Tours, Tours, France.
| | | | - Marianne Maquart
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, Tours, France.
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16
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Tréguier Y, Bull-Maurer A, Roingeard P. Apolipoprotein E, a Crucial Cellular Protein in the Lifecycle of Hepatitis Viruses. Int J Mol Sci 2022; 23:ijms23073676. [PMID: 35409035 PMCID: PMC8998859 DOI: 10.3390/ijms23073676] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/19/2022] [Accepted: 03/25/2022] [Indexed: 02/01/2023] Open
Abstract
Apolipoprotein E (ApoE) is a multifunctional protein expressed in several tissues, including those of the liver. This lipoprotein component is responsible for maintaining lipid content homeostasis at the plasma and tissue levels by transporting lipids between the liver and peripheral tissues. The ability of ApoE to interact with host-cell surface receptors and its involvement in several cellular pathways raised questions about the hijacking of ApoE by hepatotropic viruses. Hepatitis C virus (HCV) was the first hepatitis virus reported to be dependent on ApoE for the completion of its lifecycle, with ApoE being part of the viral particle, mediating its entry into host cells and contributing to viral morphogenesis. Recent studies of the hepatitis B virus (HBV) lifecycle have revealed that this virus and its subviral envelope particles also incorporate ApoE. ApoE favors HBV entry and is crucial for the morphogenesis of infectious particles, through its interaction with HBV envelope glycoproteins. This review summarizes the data highlighting the crucial role of ApoE in the lifecycles of HBV and HCV and discusses its potential role in the lifecycle of other hepatotropic viruses.
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Affiliation(s)
- Yannick Tréguier
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, 37032 Tours, France; (Y.T.); (A.B.-M.)
| | - Anne Bull-Maurer
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, 37032 Tours, France; (Y.T.); (A.B.-M.)
| | - Philippe Roingeard
- INSERM U1259 MAVIVH, Université de Tours et CHU de Tours, 37032 Tours, France; (Y.T.); (A.B.-M.)
- Plateforme IBiSA des Microscopies, Université de Tours et CHU de Tours, 37032 Tours, France
- Correspondence: ; Tel.: +33-0247-366-232
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17
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Wang YF, Ge CM, Yin HZ, Dai ZH, Dong JP, Ji M, Yang F. Dysregulated N6-methyladenosine (m 6A) processing in hepatocellular carcinoma. Ann Hepatol 2022; 25:100538. [PMID: 34555511 DOI: 10.1016/j.aohep.2021.100538] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/06/2021] [Accepted: 05/13/2021] [Indexed: 02/06/2023]
Abstract
N6-methyladenosine (m6A) is the most thoroughly studied type of internal RNA modification, as this epigenetic modification is the most abundant in eukaryotic RNAs to date. This modification occurs in various types of RNAs and plays significant roles in dominant RNA-related processes, such as translation, splicing, export and degradation. These processes are catalyzed by three types of prominent enzymes: writers, erasers and readers. Increasing evidence has shown that m6A modification is vital for the regulation of gene expression, carcinogenesis, tumor progression and other abnormal changes, and recent studies have shown that m6A is important in the development of hepatocellular carcinoma (HCC). Herein, we summarize the nature and regulatory mechanisms of m6A modification, including its role in the pathogenesis of HCC and related chronic liver diseases. We also highlight the clinical significance and future strategies involving RNA m6A modifications in HCC.
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Affiliation(s)
- Yue-Fan Wang
- The Department of Medical Genetics, Naval Medical University, Shanghai, 200433, China..
| | - Chun-Mei Ge
- The Department of Medical Genetics, Naval Medical University, Shanghai, 200433, China..
| | - Hao-Zan Yin
- The Department of Medical Genetics, Naval Medical University, Shanghai, 200433, China..
| | - Zhi-Hui Dai
- The Department of Medical Genetics, Naval Medical University, Shanghai, 200433, China..
| | - Jun-Peng Dong
- The Department of Medical Genetics, Naval Medical University, Shanghai, 200433, China..
| | - Man Ji
- The Department of Medical Genetics, Naval Medical University, Shanghai, 200433, China..
| | - Fu Yang
- The Department of Medical Genetics, Naval Medical University, Shanghai, 200433, China..
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Javadifar A, Ghezeldasht SA, Rahimi H, Valizadeh N, Borojerdi ZR, Vahidi Z, Rezaee SR. Possible deterioration of Apolipoproteins expression by HTLV-1 infection in favor of infected leukemic cells in adult T-cell leukemia/lymphoma (ATLL). GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2022.101531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Martin CK, Kielian M. Identification of human and mosquito receptors for alphaviruses. Nature 2022; 602:388-390. [PMID: 35046583 DOI: 10.1038/d41586-022-00052-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Abstract
Hepatitis B virus (HBV) is a hepatotropic virus and an important human pathogen. There are an estimated 296 million people in the world that are chronically infected by this virus, and many of them will develop severe liver diseases including hepatitis, cirrhosis and hepatocellular carcinoma (HCC). HBV is a small DNA virus that replicates via the reverse transcription pathway. In this review, we summarize the molecular pathways that govern the replication of HBV and its interactions with host cells. We also discuss viral and non-viral factors that are associated with HBV-induced carcinogenesis and pathogenesis, as well as the role of host immune responses in HBV persistence and liver pathogenesis.
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Affiliation(s)
- Yu-Chen Chuang
- Department of Molecular Microbiology and Immunology, University of Southern California Keck School of Medicine, Los Angeles, CA 90089, USA
| | - Kuen-Nan Tsai
- Department of Molecular Microbiology and Immunology, University of Southern California Keck School of Medicine, Los Angeles, CA 90089, USA
| | - Jing-Hsiung James Ou
- Department of Molecular Microbiology and Immunology, University of Southern California Keck School of Medicine, Los Angeles, CA 90089, USA
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Kong H, Ju E, Yi K, Xu W, Lao Y, Cheng D, Zhang Q, Tao Y, Li M, Ding J. Advanced Nanotheranostics of CRISPR/Cas for Viral Hepatitis and Hepatocellular Carcinoma. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102051. [PMID: 34665528 PMCID: PMC8693080 DOI: 10.1002/advs.202102051] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 07/25/2021] [Indexed: 05/08/2023]
Abstract
Liver disease, particularly viral hepatitis and hepatocellular carcinoma (HCC), is a global healthcare burden and leads to more than 2 million deaths per year worldwide. Despite some success in diagnosis and vaccine development, there are still unmet needs to improve diagnostics and therapeutics for viral hepatitis and HCC. The emerging clustered regularly interspaced short palindromic repeat/associated proteins (CRISPR/Cas) technology may open up a unique avenue to tackle these two diseases at the genetic level in a precise manner. Especially, liver is a more accessible organ over others from the delivery point of view, and many advanced strategies applied for nanotheranostics can be adapted in CRISPR-mediated diagnostics or liver gene editing. In this review, the focus is on these two aspects of viral hepatitis and HCC applications. An overview on CRISPR editor development and current progress in clinical trials is first given, followed by highlighting the recent advances integrating the merits of gene editing and nanotheranostics. The promising systems that are used in other applications but may hold potentials in liver gene editing are also discussed. This review concludes with the perspectives on rationally designing the next-generation CRISPR approaches and improving the editing performance.
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Affiliation(s)
- Huimin Kong
- Laboratory of Biomaterials and Translational MedicineCenter for Nanomedicine and Biotherapy CenterThe Third Affiliated HospitalSun Yat‐sen University600 Tianhe RoadGuangzhou510630P. R. China
| | - Enguo Ju
- Laboratory of Biomaterials and Translational MedicineCenter for Nanomedicine and Biotherapy CenterThe Third Affiliated HospitalSun Yat‐sen University600 Tianhe RoadGuangzhou510630P. R. China
| | - Ke Yi
- Laboratory of Biomaterials and Translational MedicineCenter for Nanomedicine and Biotherapy CenterThe Third Affiliated HospitalSun Yat‐sen University600 Tianhe RoadGuangzhou510630P. R. China
| | - Weiguo Xu
- Key Laboratory of Polymer EcomaterialsChangchun Institute of Applied ChemistryChinese Academy of Sciences5625 Renmin StreetChangchun130022P. R. China
| | - Yeh‐Hsing Lao
- Department of Biomedical EngineeringColumbia University3960 Broadway Lasker Room 450New YorkNY10032USA
| | - Du Cheng
- PCFM Lab of Ministry of EducationSchool of Materials Science and EngineeringSun Yat‐sen University135 Xingangxi RoadGuangzhou510275P. R. China
| | - Qi Zhang
- Laboratory of Biomaterials and Translational MedicineCenter for Nanomedicine and Biotherapy CenterThe Third Affiliated HospitalSun Yat‐sen University600 Tianhe RoadGuangzhou510630P. R. China
- Guangdong Provincial Key Laboratory of Liver Disease Research600 Tianhe RoadGuangzhou510630P. R. China
| | - Yu Tao
- Laboratory of Biomaterials and Translational MedicineCenter for Nanomedicine and Biotherapy CenterThe Third Affiliated HospitalSun Yat‐sen University600 Tianhe RoadGuangzhou510630P. R. China
- Guangdong Provincial Key Laboratory of Liver Disease Research600 Tianhe RoadGuangzhou510630P. R. China
| | - Mingqiang Li
- Laboratory of Biomaterials and Translational MedicineCenter for Nanomedicine and Biotherapy CenterThe Third Affiliated HospitalSun Yat‐sen University600 Tianhe RoadGuangzhou510630P. R. China
| | - Jianxun Ding
- Key Laboratory of Polymer EcomaterialsChangchun Institute of Applied ChemistryChinese Academy of Sciences5625 Renmin StreetChangchun130022P. R. China
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Incorporation of apolipoprotein E into HBV-HCV subviral envelope particles to improve the hepatitis vaccine strategy. Sci Rep 2021; 11:21856. [PMID: 34750487 PMCID: PMC8575973 DOI: 10.1038/s41598-021-01428-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 10/27/2021] [Indexed: 12/20/2022] Open
Abstract
Hepatitis C is a major threat to public health for which an effective treatment is available, but a prophylactic vaccine is still needed to control this disease. We designed a vaccine based on chimeric HBV-HCV envelope proteins forming subviral particles (SVPs) that induce neutralizing antibodies against HCV in vitro. Here, we aimed to increase the neutralizing potential of those antibodies, by using HBV-HCV SVPs bearing apolipoprotein E (apoE). These particles were produced by cultured stable mammalian cell clones, purified and characterized. We found that apoE was able to interact with both chimeric HBV-HCV (E1-S and E2-S) proteins, and with the wild-type HBV S protein. ApoE was also detected on the surface of purified SVPs and improved the folding of HCV envelope proteins, but its presence lowered the incorporation of E2-S protein. Immunization of New Zealand rabbits resulted in similar anti-S responses for all rabbits, whereas anti-E1/-E2 antibody titers varied according to the presence or absence of apoE. Regarding the neutralizing potential of these anti-E1/-E2 antibodies, it was higher in rabbits immunized with apoE-bearing particles. In conclusion, the association of apoE with HCV envelope proteins may be a good strategy for improving HCV vaccines based on viral envelope proteins.
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23
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Cochard J, Bull-Maurer A, Tauber C, Burlaud-Gaillard J, Mazurier F, Meunier JC, Roingeard P, Chouteau P. Differentiated Cells in Prolonged Hypoxia Produce Highly Infectious Native-Like Hepatitis C Virus Particles. Hepatology 2021; 74:627-640. [PMID: 33665810 DOI: 10.1002/hep.31788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 01/28/2021] [Accepted: 02/05/2021] [Indexed: 01/20/2023]
Abstract
BACKGROUND AND AIMS Standard hepatitis C virus (HCV) cell-culture models present an altered lipid metabolism and thus produce lipid-poor lipoviral particles (LVPs). These models are thereby weakly adapted to explore the complete natural viral life cycle. APPROACH AND RESULTS To overcome these limitations, we used an HCV cell-culture model based on both cellular differentiation and sustained hypoxia to better mimic the host-cell environment. The long-term exposure of Huh7.5 cells to DMSO and hypoxia (1% O2 ) significantly enhanced the expression of major differentiation markers and the cellular hypoxia adaptive response by contrast with undifferentiated and normoxic (21% O2 ) standard conditions. Because hepatocyte-like differentiation and hypoxia are key regulators of intracellular lipid metabolism, we characterized the distribution of lipid droplets (LDs) and demonstrated that experimental cells significantly accumulate larger and more numerous LDs relative to standard cell-culture conditions. An immunocapture (IC) and transmission electron microscopy (TEM) method showed that differentiated and hypoxic Huh7.5 cells produced lipoproteins significantly larger than those produced by standard Huh7.5 cell cultures. The experimental cell culture model is permissive to HCV-Japanese fulminant hepatitis (JFH1) infection and produces very-low-buoyant-density LVPs that are 6-fold more infectious than LVPs formed by standard JFH1-infected Huh7.5 cells. Finally, the IC-TEM approach and antibody-neutralization experiments revealed that LVPs were highly lipidated, had a global ultrastructure and a conformation of the envelope glycoprotein complex E1E2 close to that of the ones circulating in infected individuals. CONCLUSIONS This relevant HCV cell culture model thus mimics the complete native intracellular HCV life cycle and, by extension, can be proposed as a model of choice for studies of other hepatotropic viruses.
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Affiliation(s)
- Jade Cochard
- INSERM U1259Université de Tours and CHRU de ToursToursFrance
| | | | - Clovis Tauber
- UMRS INSERM U1253 Imagerie et cerveauUniversité de ToursToursFrance
| | | | - Frédéric Mazurier
- Université de ToursEquipe Associée 5501CNRS Equipe de Recherche Labellisée 7001LNOx TeamToursFrance
| | | | - Philippe Roingeard
- INSERM U1259Université de Tours and CHRU de ToursToursFrance.,Plate-Forme IBiSA des MicroscopiesUniversité de Tours and CHRU de ToursToursFrance
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Li Y, Luo G. Human low-density lipoprotein receptor plays an important role in hepatitis B virus infection. PLoS Pathog 2021; 17:e1009722. [PMID: 34293069 PMCID: PMC8345860 DOI: 10.1371/journal.ppat.1009722] [Citation(s) in RCA: 12] [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: 01/15/2021] [Revised: 08/06/2021] [Accepted: 06/17/2021] [Indexed: 01/05/2023] Open
Abstract
Hepatitis B virus (HBV) chronically infects more than 240 million people worldwide, resulting in chronic hepatitis, cirrhosis, and hepatocellular carcinoma. HBV vaccine is effective to prevent new HBV infection but does not offer therapeutic benefit to hepatitis B patients. Neither are current antiviral drugs curative of chronic hepatitis B. A more thorough understanding of HBV infection and replication holds a great promise for identification of novel antiviral drugs and design of optimal strategies towards the ultimate elimination of chronic hepatitis B. Recently, we have developed a robust HBV cell culture system and discovered that human apolipoprotein E (apoE) is enriched on the HBV envelope and promotes HBV infection and production. In the present study, we have determined the role of the low-density lipoprotein receptor (LDLR) in HBV infection. A LDLR-blocking monoclonal antibody potently inhibited HBV infection in HepG2 cells expressing the sodium taurocholate cotransporting polypeptide (NTCP) as well as in primary human hepatocytes. More importantly, small interfering RNAs (siRNAs)-mediated knockdown of LDLR expression and the CRISPR/Cas9-induced knockout of the LDLR gene markedly reduced HBV infection. A recombinant LDLR protein could block heparin-mediated apoE pulldown, suggesting that LDLR may act as an HBV cell attachment receptor via binding to the HBV-associated apoE. Collectively, these findings demonstrate that LDLR plays an important role in HBV infection probably by serving as a virus attachment receptor. Requirement of multiple cell surface receptors and co-receptors for efficient virus infection is exemplified by human immunodeficient virus (HIV) and hepatitis C virus (HCV). In the case of HBV, expression of the NTCP receptor alone in human and murine hepatocytes converted HBV susceptibility albeit at low levels. Recent identification of the glypican 5 (GPC5) and epidermal growth factor receptor (EGFR) as HBV infection-promoting factors suggests that efficient HBV infection requires multiple cell surface molecules as virus attachment and post-attachment receptors. Here, we provide substantial evidence demonstrating that another cell surface receptor LDLR plays an important role in HBV infection. Downregulation of LDLR expression significantly lowered HBV infection, whereas its upregulation promoted HBV infection. The levels of LDLR expression correlated with HBV cell attachment, suggesting that it serves as an HBV cell attachment receptor. The inhibition of heparin-mediated apoE pulldown by a purified LDLR suggested that LDLR promotes HBV infection probably through its binding to HBV-associated apoE. It is warranted to further determine whether other LDLR family members also play a role in HBV infection.
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Affiliation(s)
- Yingying Li
- Department of Microbiology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, United States of America
- Department of Microbiology, Peking University Health Science Center School of Basic Medical Sciences, Beijing, China
| | - Guangxiang Luo
- Department of Microbiology, University of Alabama at Birmingham School of Medicine, Birmingham, Alabama, United States of America
- * E-mail:
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25
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Rodrigues JCG, Pinto P, Leitão LPC, Vinagre LWMS, Monte N, Fernandes MR, Khayat AS, de Assumpção PP, Santos NPCD, Santos SEBD. Influence of APOE locus on poor prognosis of COVID-19. Heliyon 2021; 7:e07379. [PMID: 34179542 PMCID: PMC8220252 DOI: 10.1016/j.heliyon.2021.e07379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/27/2021] [Accepted: 06/18/2021] [Indexed: 01/24/2023] Open
Abstract
The COVID-19 pandemic has infected over 25 million of people worldwide, 5% of whom evolved to death and, among of the active cases, more than 60 thousand are classified as critical or severe. Recent studies revealed that ApoE, a protein encoded by APOE gene, may increase the risk of severe COVID-19 cases. ApoE has been involved with prevention of tissue damage and promotion of adaptative immune response in the lungs. This study investigated frequencies distribution of alleles that alter the ApoE expression in lung tissues to trace a profile of these variants and associate them to COVID-19 clinical outcomes. Data about APOE expression levels was obtained from the Genotype-Tissue Expression Project and the allele frequencies of APOE variants was acquired from the populations included in the phase 3 release of the 1000 Genomes Project. A total of 128 variants showed a significant impact on the APOE expression in lung tissues (p < 0.0001). Linkage Disequilibrium analysis revealed that 98 variants were closely grouped into seven distinct haplotype blocks, of which six were composed of variants that significantly decrease APOE gene expression in the lungs. Most of the haplotypes with higher impact on APOE expression showed greater frequencies in Europeans and lower in Africans, which implies that European populations might be more susceptible to SARS-CoV-2 infection. The present study indicates a potential genetic contribution of APOE expression-modifying variants in modulating the prognosis of COVID-19.
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Affiliation(s)
| | - Pablo Pinto
- Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará, Belém, Pará, Brazil
- Laboratório de Genética Humana e Médica, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brazil
| | | | | | - Natasha Monte
- Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará, Belém, Pará, Brazil
| | | | - André Salim Khayat
- Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará, Belém, Pará, Brazil
| | | | | | - Sidney Emanuel Batista dos Santos
- Núcleo de Pesquisas em Oncologia, Universidade Federal do Pará, Belém, Pará, Brazil
- Laboratório de Genética Humana e Médica, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Pará, Brazil
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26
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HBV Pre-S1-Derived Myristoylated Peptide (Myr47): Identification of the Inhibitory Activity on the Cellular Uptake of Lipid Nanoparticles. Viruses 2021; 13:v13050929. [PMID: 34067884 PMCID: PMC8157113 DOI: 10.3390/v13050929] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/11/2021] [Accepted: 05/14/2021] [Indexed: 01/05/2023] Open
Abstract
The Myr47 lipopeptide, consisting of hepatitis B virus (HBV) pre-S1 domain (myristoylated 2–48 peptide), is an effective commercialized anti-HBV drug that prevents the interaction of HBV with sodium taurocholate cotransporting polypeptide (NTCP) on human hepatocytes, an activity which requires both N-myristoylation residue and specific amino acid sequences. We recently reported that Myr47 reduces the cellular uptake of HBV surface antigen (HBsAg, subviral particle of HBV) in the absence of NTCP expression. In this study, we analyzed how Myr47 reduces the cellular uptake of lipid nanoparticles (including liposomes (LPs) and HBsAg) without NTCP expression. By using Myr47 mutants lacking the HBV infection inhibitory activity, they could reduce the cellular uptake of LPs in an N-myristoylation-dependent manner and an amino acid sequence-independent manner, not only in human liver-derived cells but also in human non-liver-derived cells. Moreover, Myr47 and its mutants could reduce the interaction of LPs with apolipoprotein E3 (ApoE3) in an N-myristoylation-dependent manner regardless of their amino acid sequences. From these results, lipopeptides are generally anchored by inserting their myristoyl residue into the lipid bilayer and can inhibit the interaction of LPs/HBsAg with apolipoprotein, thereby reducing the cellular uptake of LPs/HBsAg. Similarly, Myr47 would interact with HBV, inhibiting the uptake of HBV into human hepatic cells, while the inhibitory effect of Myr47 may be secondary to its ability to protect against HBV infection.
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27
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Schmidt NM, Wing PAC, Diniz MO, Pallett LJ, Swadling L, Harris JM, Burton AR, Jeffery-Smith A, Zakeri N, Amin OE, Kucykowicz S, Heemskerk MH, Davidson B, Meyer T, Grove J, Stauss HJ, Pineda-Torra I, Jolly C, Jury EC, McKeating JA, Maini MK. Targeting human Acyl-CoA:cholesterol acyltransferase as a dual viral and T cell metabolic checkpoint. Nat Commun 2021; 12:2814. [PMID: 33990561 PMCID: PMC8121939 DOI: 10.1038/s41467-021-22967-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 04/09/2021] [Indexed: 02/08/2023] Open
Abstract
Determining divergent metabolic requirements of T cells, and the viruses and tumours they fail to combat, could provide new therapeutic checkpoints. Inhibition of acyl-CoA:cholesterol acyltransferase (ACAT) has direct anti-carcinogenic activity. Here, we show that ACAT inhibition has antiviral activity against hepatitis B (HBV), as well as boosting protective anti-HBV and anti-hepatocellular carcinoma (HCC) T cells. ACAT inhibition reduces CD8+ T cell neutral lipid droplets and promotes lipid microdomains, enhancing TCR signalling and TCR-independent bioenergetics. Dysfunctional HBV- and HCC-specific T cells are rescued by ACAT inhibitors directly ex vivo from human liver and tumour tissue respectively, including tissue-resident responses. ACAT inhibition enhances in vitro responsiveness of HBV-specific CD8+ T cells to PD-1 blockade and increases the functional avidity of TCR-gene-modified T cells. Finally, ACAT regulates HBV particle genesis in vitro, with inhibitors reducing both virions and subviral particles. Thus, ACAT inhibition provides a paradigm of a metabolic checkpoint able to constrain tumours and viruses but rescue exhausted T cells, rendering it an attractive therapeutic target for the functional cure of HBV and HBV-related HCC.
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Affiliation(s)
- Nathalie M Schmidt
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - Peter A C Wing
- Nuffield Department of Medicine, Oxford University, Oxford, UK
| | - Mariana O Diniz
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - Laura J Pallett
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - Leo Swadling
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - James M Harris
- Nuffield Department of Medicine, Oxford University, Oxford, UK
| | - Alice R Burton
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - Anna Jeffery-Smith
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - Nekisa Zakeri
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - Oliver E Amin
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - Stephanie Kucykowicz
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - Mirjam H Heemskerk
- Department of Hematology, Leiden University Medical Center, Leiden, The Netherlands
| | - Brian Davidson
- Division of Surgery, University College London, London, UK
- Royal Free London NHS Foundation Trust, London, UK
| | - Tim Meyer
- Royal Free London NHS Foundation Trust, London, UK
- Cancer Institute, University College London, London, UK
| | - Joe Grove
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | - Hans J Stauss
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | | | - Clare Jolly
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK
| | | | | | - Mala K Maini
- Division of Infection & Immunity, Institute of Immunity & Transplantation, University College London, London, UK.
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28
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Zhang J, Ling N, Lei Y, Peng M, Hu P, Chen M. Multifaceted Interaction Between Hepatitis B Virus Infection and Lipid Metabolism in Hepatocytes: A Potential Target of Antiviral Therapy for Chronic Hepatitis B. Front Microbiol 2021; 12:636897. [PMID: 33776969 PMCID: PMC7991784 DOI: 10.3389/fmicb.2021.636897] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/18/2021] [Indexed: 12/17/2022] Open
Abstract
Hepatitis B virus (HBV) is considered a “metabolic virus” and affects many hepatic metabolic pathways. However, how HBV affects lipid metabolism in hepatocytes remains uncertain yet. Accumulating clinical studies suggested that compared to non-HBV-infected controls, chronic HBV infection was associated with lower levels of serum total cholesterol and triglycerides and a lower prevalence of hepatic steatosis. In patients with chronic HBV infection, high ALT level, high body mass index, male gender, or old age was found to be positively correlated with hepatic steatosis. Furthermore, mechanisms of how HBV infection affected hepatic lipid metabolism had also been explored in a number of studies based on cell lines and mouse models. These results demonstrated that HBV replication or expression induced extensive and diverse changes in hepatic lipid metabolism, by not only activating expression of some critical lipogenesis and cholesterolgenesis-related proteins but also upregulating fatty acid oxidation and bile acid synthesis. Moreover, increasing studies found some potential targets to inhibit HBV replication or expression by decreasing or enhancing certain lipid metabolism-related proteins or metabolites. Therefore, in this article, we comprehensively reviewed these publications and revealed the connections between clinical observations and experimental findings to better understand the interaction between hepatic lipid metabolism and HBV infection. However, the available data are far from conclusive, and there is still a long way to go before clarifying the complex interaction between HBV infection and hepatic lipid metabolism.
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Affiliation(s)
- Jiaxuan Zhang
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education, Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ning Ling
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education, Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yu Lei
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education, Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Mingli Peng
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education, Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Peng Hu
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education, Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Min Chen
- Key Laboratory of Molecular Biology for Infectious Diseases, Ministry of Education, Department of Infectious Diseases, Institute for Viral Hepatitis, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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29
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Shi Y, Du L, Lv D, Li Y, Zhang Z, Huang X, Tang H. Emerging role and therapeutic application of exosome in hepatitis virus infection and associated diseases. J Gastroenterol 2021; 56:336-349. [PMID: 33665710 PMCID: PMC8005397 DOI: 10.1007/s00535-021-01765-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/23/2021] [Indexed: 02/05/2023]
Abstract
Hepatitis viruses are chief pathogens of hepatitis and end-stage liver diseases. Their replication and related pathogenic process highly rely on the host micro-environment and multiple cellular elements, including exosomes. Representing with a sort of cell-derived vesicle structure, exosomes were considered to be dispensable cellular components, even wastes. Along with advancing investigation, a specific profile of exosome in driving hepatitis viruses' infection and hepatic disease progression is revealed. Exosomes greatly affect the pathogenesis of hepatitis viruses by mediating their replication and modulating the host immune responses. The characteristics of host exosomes are markedly changed after infection with hepatitis viruses. Exosomes released from hepatitis virus-infected cells can carry viral nucleic or protein components, thereby acting as an effective subterfuge for hepatitis viruses by participating in viral transportation and immune escape. On the contrary, immune cell-derived exosomes contribute toward the innate antiviral immune defense and virus eradication. There is growing evidence supporting the application of exosomal biomarkers for predicting disease progress or therapeutic outcome, while exosomal nanoshuttles are regarded as promising therapeutic options based on their delivery properties and immune compatibility. In this review, we summarize the biogenesis and secretion mechanism of exosomes, review the recent findings pertaining to the role of exosomes in the interplay between hepatitis viruses and innate immune responses, and conclude their potential in further therapeutic application.
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Affiliation(s)
- Ying Shi
- Center of Infectious Diseases, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Wuhou District, Chengdu, 610041 Sichuan China ,School of Medicine, University of Electronic Science and Technology of China, No. 4 Section 2, North Jianshe Road, Chengdu, 610054 Sichuan China ,Department of Hepatobiliary Surgery and Cell Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, No. 32 Western Section 2, 1st Ring Rd., Chengdu, 610072 Sichuan China
| | - Lingyao Du
- Center of Infectious Diseases, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Wuhou District, Chengdu, 610041 Sichuan China ,Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, No. 17 People’s South Road, Chengdu, 610041 Sichuan China
| | - Duoduo Lv
- Center of Infectious Diseases, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Wuhou District, Chengdu, 610041 Sichuan China ,Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, No. 17 People’s South Road, Chengdu, 610041 Sichuan China
| | - Yan Li
- School of Medicine, University of Electronic Science and Technology of China, No. 4 Section 2, North Jianshe Road, Chengdu, 610054 Sichuan China ,Department of Hepatobiliary Surgery and Cell Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, No. 32 Western Section 2, 1st Ring Rd., Chengdu, 610072 Sichuan China
| | - Zilong Zhang
- School of Medicine, University of Electronic Science and Technology of China, No. 4 Section 2, North Jianshe Road, Chengdu, 610054 Sichuan China ,Department of Hepatobiliary Surgery and Cell Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, No. 32 Western Section 2, 1st Ring Rd., Chengdu, 610072 Sichuan China
| | - Xiaolun Huang
- School of Medicine, University of Electronic Science and Technology of China, No. 4 Section 2, North Jianshe Road, Chengdu, 610054 Sichuan China ,Department of Hepatobiliary Surgery and Cell Transplantation Center, Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital, No. 32 Western Section 2, 1st Ring Rd., Chengdu, 610072 Sichuan China
| | - Hong Tang
- Center of Infectious Diseases, West China Hospital of Sichuan University, No. 37 Guoxue Alley, Wuhou District, Chengdu, 610041 Sichuan China ,Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, No. 17 People’s South Road, Chengdu, 610041 Sichuan China
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30
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Haghani A, Thorwald M, Morgan TE, Finch CE. The APOE gene cluster responds to air pollution factors in mice with coordinated expression of genes that differs by age in humans. Alzheimers Dement 2020; 17:175-190. [PMID: 33215813 DOI: 10.1002/alz.12230] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 12/13/2022]
Abstract
Little is known of gene-environment interactions for Alzheimer's disease (AD) risk factors. Apolipoprotein E (APOE) and neighbors on chromosome 19q13.3 have variants associated with risks of AD, but with unknown mechanism. This study describes novel links among the APOE network, air pollution, and age-related diseases. Mice exposed to air pollution nano-sized particulate matter (nPM) had coordinate responses of Apoe-Apoc1-Tomm40 in the cerebral cortex. In humans, the AD vulnerable hippocampus and amygdala had stronger age decline in APOE cluster expression than the AD-resistant cerebellum and hypothalamus. Using consensus weighted gene co-expression network, we showed that APOE has a conserved co-expressed network in rodent and primate brains. SOX1, which has AD-associated single nucleotide polymorphisms, was among the co-expressed genes in the human hippocampus. Humans and mice shared 87% of potential binding sites for transcription factors in APOE cluster promoter, suggesting similar inducibility and a novel link among environment, APOE cluster, and risk of AD.
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Affiliation(s)
- Amin Haghani
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA.,Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Max Thorwald
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
| | - Todd E Morgan
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA
| | - Caleb E Finch
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, USA.,Dornsife College, University of Southern California, Los Angeles, California, USA
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31
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Guan F, Zhang C, Jiang C, Jacques ML, Bai Y, Lu S, Liu W, Lei J. ApoE deficiency promotes hepatic pathology by aggravating Th17/Treg imbalance in murine schistosomiasis japonica. Parasite Immunol 2020; 42:e12785. [PMID: 32786078 DOI: 10.1111/pim.12785] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 08/03/2020] [Accepted: 08/06/2020] [Indexed: 01/16/2023]
Abstract
AIMS The Schistosoma japonicum (S japonicum)-infected ApoE gene deficiency (ApoE-/- ) mice were used to determine effect of ApoE on hepatic immunopathology. METHODS Murine activities and appetite, body weight, and ratio of liver weight to its body weight (Hepatic mass index, HMI) were observed. Worm load and liver egg burden were evaluated as the infection intensity. Number and size of liver egg granulomas and serum levels of alanine aminotransferase (ALT) were investigated. We analysed hepatic fibrosis by markers of fibrosis in tissue, detected hepatic Th17 and Treg frequency by flow cytometry, and measured hepatic expressions of RORγt, Foxp3, IL-17A and TGF-β1 via qPCR. Lipid metabolism was determined by serum levels of cholesterol (TC) and triglyceride (TG) as well as hepatic Oil red O staining. RESULTS In the infected ApoE-/- mice, the increased infection intensity aggravated the hepatic immunopathology (evidenced by increased HMI, elevated egg granulomas and increased ALT levels) and fibrosis (increased hepatic collagen deposition). ApoE deficiency resulted in significantly elevated ratio of hepatic Th17/Treg and higher serum levels of TC and TG, along with higher level of hepatic Oil red O staining. CONCLUSIONS ApoE deficiency promotes hepatic pathology and fibrosis by exacerbating Th17/Treg imbalance and altering lipid metabolism in murine schistosomiasis japonica.
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Affiliation(s)
- Fei Guan
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chongyang Zhang
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunjie Jiang
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Muziazia Lupemba Jacques
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yang Bai
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shengjun Lu
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenqi Liu
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiahui Lei
- Department of Parasitology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Innovative HBV Animal Models Based on the Entry Receptor NTCP. Viruses 2020; 12:v12080828. [PMID: 32751581 PMCID: PMC7472226 DOI: 10.3390/v12080828] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 02/07/2023] Open
Abstract
Hepatitis B is a major global health problem, with an estimated 257 million chronically infected patients and almost 1 million deaths per year. The causative agent is hepatitis B virus (HBV), a small, enveloped, partially double-stranded DNA virus. HBV has a strict species specificity, naturally infecting only humans and chimpanzees. Sodium taurocholate co-transporting polypeptide (NTCP), a bile acid transporter expressed on hepatocytes, has been shown to be one of the key factors in HBV infection, playing a crucial role in the HBV entry process in vitro and in vivo. Variations in the amino acid sequence of NTCP can inhibit HBV infection and, therefore, contributes, in part, to the species barrier. This discovery has revolutionized the search for novel animal models of HBV. Indeed, it was recently shown that variations in the amino acid sequence of NTCP represent the sole species barrier for HBV infection in macaques. Here, we review what is known about HBV entry through the NTCP receptor and highlight how this knowledge has been harnessed to build new animal models for the study of HBV pathogenesis and curative therapies.
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Zhang Y, Zheng L. Apolipoprotein: prospective biomarkers in digestive tract cancer. Transl Cancer Res 2020; 9:3712-3720. [PMID: 35117733 PMCID: PMC8799137 DOI: 10.21037/tcr-19-2106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 03/27/2020] [Indexed: 01/17/2023]
Abstract
Digestive tract cancer, which is characterized by high morbidity and mortality, seriously affects the quality of life of patients worldwide. The digestive tract has abundant blood supply and nutriment, providing a suitable environment for tumor cells. Under chemical, physical, and biological stimuli, the activated cancer-related genes promote tumorigenesis. The synthesis of apolipoprotein occurs in the liver, intestine, and other digestive organs. However, the functions of apolipoproteins are not limited to lipid metabolism. An increasing number of studies have revealed that apolipoproteins take part in the regulation of tumor behavior. Apolipoprotein A (apoA) has recently been acknowledged as a beneficial indicator of several cancers, including colon, hepatocellular, and pancreatic cancer. Apolipoprotein E (apoE) can affect tumor susceptibility on account of genetic polymorphism. Levels of apolipoprotein C (apoC), B (apoB), and D (apoD) also impact tumor progression and the prognosis of patients. However, because of individual, racial, and genetic differences, a consensus has not yet been reached. Based on clinical data and analysis, apolipoproteins could be a novel target and marker in tumor therapy and prevention.
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Affiliation(s)
- Yibo Zhang
- Comprehensive Laboratory, the Third Affiliated Hospital of Soochow University, Changzhou 213003, China
| | - Lu Zheng
- Comprehensive Laboratory, the Third Affiliated Hospital of Soochow University, Changzhou 213003, China
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