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Milcamps R, Michiels T. Involvement of paraspeckle components in viral infections. Nucleus 2024; 15:2350178. [PMID: 38717150 PMCID: PMC11086011 DOI: 10.1080/19491034.2024.2350178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/22/2024] [Indexed: 05/12/2024] Open
Abstract
Paraspeckles are non-membranous subnuclear bodies, formed through the interaction between the architectural long non-coding RNA (lncRNA) nuclear paraspeckle assembly transcript 1 (NEAT1) and specific RNA-binding proteins, including the three Drosophila Behavior/Human Splicing (DBHS) family members (PSPC1 (Paraspeckle Component 1), SFPQ (Splicing Factor Proline and Glutamine Rich) and NONO (Non-POU domain-containing octamer-binding protein)). Paraspeckle components were found to impact viral infections through various mechanisms, such as induction of antiviral gene expression, IRES-mediated translation, or viral mRNA polyadenylation. A complex involving NEAT1 RNA and paraspeckle proteins was also found to modulate interferon gene transcription after nuclear DNA sensing, through the activation of the cGAS-STING axis. This review aims to provide an overview on how these elements actively contribute to the dynamics of viral infections.
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Affiliation(s)
- Romane Milcamps
- Université catholique de Louvain, de Duve Institute, Brussels, Belgium
| | - Thomas Michiels
- Université catholique de Louvain, de Duve Institute, Brussels, Belgium
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2
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Murray-Nerger LA, Lozano C, Burton EM, Liao Y, Ungerleider NA, Guo R, Gewurz BE. The nucleic acid binding protein SFPQ represses EBV lytic reactivation by promoting histone H1 expression. Nat Commun 2024; 15:4156. [PMID: 38755141 PMCID: PMC11099029 DOI: 10.1038/s41467-024-48333-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 04/29/2024] [Indexed: 05/18/2024] Open
Abstract
Epstein-Barr virus (EBV) uses a biphasic lifecycle of latency and lytic reactivation to infect >95% of adults worldwide. Despite its central role in EBV persistence and oncogenesis, much remains unknown about how EBV latency is maintained. We used a human genome-wide CRISPR/Cas9 screen to identify that the nuclear protein SFPQ was critical for latency. SFPQ supported expression of linker histone H1, which stabilizes nucleosomes and regulates nuclear architecture, but has not been previously implicated in EBV gene regulation. H1 occupied latent EBV genomes, including the immediate early gene BZLF1 promoter. Upon reactivation, SFPQ was sequestered into sub-nuclear puncta, and EBV genomic H1 occupancy diminished. Enforced H1 expression blocked EBV reactivation upon SFPQ knockout, confirming it as necessary downstream of SFPQ. SFPQ knockout triggered reactivation of EBV in B and epithelial cells, as well as of Kaposi's sarcoma-associated herpesvirus in B cells, suggesting a conserved gamma-herpesvirus role. These findings highlight SFPQ as a major regulator of H1 expression and EBV latency.
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Affiliation(s)
- Laura A Murray-Nerger
- Division of Infectious Diseases, Department of Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
- Department of Microbiology, Harvard Medical School, Boston, MA, 02115, USA
- Harvard Program in Virology, Boston, MA, 02115, USA
- Center for Integrated Solutions to Infectious Diseases, Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
| | - Clarisel Lozano
- Division of Infectious Diseases, Department of Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
| | - Eric M Burton
- Division of Infectious Diseases, Department of Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
- Department of Microbiology, Harvard Medical School, Boston, MA, 02115, USA
- Harvard Program in Virology, Boston, MA, 02115, USA
- Center for Integrated Solutions to Infectious Diseases, Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
| | - Yifei Liao
- Division of Infectious Diseases, Department of Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA
- Department of Microbiology, Harvard Medical School, Boston, MA, 02115, USA
- Harvard Program in Virology, Boston, MA, 02115, USA
- Center for Integrated Solutions to Infectious Diseases, Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA
| | | | - Rui Guo
- Department of Molecular Biology and Microbiology, Tufts University, Medford, MA, 02155, USA
| | - Benjamin E Gewurz
- Division of Infectious Diseases, Department of Medicine, Brigham and Women's Hospital, 181 Longwood Avenue, Boston, MA, 02115, USA.
- Department of Microbiology, Harvard Medical School, Boston, MA, 02115, USA.
- Harvard Program in Virology, Boston, MA, 02115, USA.
- Center for Integrated Solutions to Infectious Diseases, Broad Institute of Harvard and MIT, Cambridge, MA, 02142, USA.
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3
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Jiang L, Xiao M, Liao QQ, Zheng L, Li C, Liu Y, Yang B, Ren A, Jiang C, Feng XH. High-sensitivity profiling of SARS-CoV-2 noncoding region-host protein interactome reveals the potential regulatory role of negative-sense viral RNA. mSystems 2023; 8:e0013523. [PMID: 37314180 PMCID: PMC10469612 DOI: 10.1128/msystems.00135-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/11/2023] [Indexed: 06/15/2023] Open
Abstract
A deep understanding of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-host interactions is crucial to developing effective therapeutics and addressing the threat of emerging coronaviruses. The role of noncoding regions of viral RNA (ncrRNAs) has yet to be systematically scrutinized. We developed a method using MS2 affinity purification coupled with liquid chromatography-mass spectrometry and designed a diverse set of bait ncrRNAs to systematically map the interactome of SARS-CoV-2 ncrRNA in Calu-3, Huh7, and HEK293T cells. Integration of the results defined the core ncrRNA-host protein interactomes among cell lines. The 5' UTR interactome is enriched with proteins in the small nuclear ribonucleoproteins family and is a target for the regulation of viral replication and transcription. The 3' UTR interactome is enriched with proteins involved in the stress granules and heterogeneous nuclear ribonucleoproteins family. Intriguingly, compared with the positive-sense ncrRNAs, the negative-sense ncrRNAs, especially the negative-sense of 3' UTR, interacted with a large array of host proteins across all cell lines. These proteins are involved in the regulation of the viral production process, host cell apoptosis, and immune response. Taken together, our study depicts the comprehensive landscape of the SARS-CoV-2 ncrRNA-host protein interactome and unveils the potential regulatory role of the negative-sense ncrRNAs, providing a new perspective on virus-host interactions and the design of future therapeutics. Given the highly conserved nature of UTRs in positive-strand viruses, the regulatory role of negative-sense ncrRNAs should not be exclusive to SARS-CoV-2. IMPORTANCE Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes COVID-19, a pandemic affecting millions of lives. During replication and transcription, noncoding regions of the viral RNA (ncrRNAs) may play an important role in the virus-host interactions. Understanding which and how these ncrRNAs interact with host proteins is crucial for understanding the mechanism of SARS-CoV-2 pathogenesis. We developed the MS2 affinity purification coupled with liquid chromatography-mass spectrometry method and designed a diverse set of ncrRNAs to identify the SARS-CoV-2 ncrRNA interactome comprehensively in different cell lines and found that the 5' UTR binds to proteins involved in U1 small nuclear ribonucleoprotein, while the 3' UTR interacts with proteins involved in stress granules and the heterogeneous nuclear ribonucleoprotein family. Interestingly, negative-sense ncrRNAs showed interactions with a large number of diverse host proteins, indicating a crucial role in infection. The results demonstrate that ncrRNAs could serve diverse regulatory functions.
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Affiliation(s)
- Liuyiqi Jiang
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Mu Xiao
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
- The MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Qing-Qing Liao
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Luqian Zheng
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Chunyan Li
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yuemei Liu
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
- The MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Bing Yang
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Aiming Ren
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Chao Jiang
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xin-Hua Feng
- Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
- Zhejiang Provincial Key Laboratory of Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
- The MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang, China
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4
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Luo SY, Moussa EW, Lopez-Orozco J, Felix-Lopez A, Ishida R, Fayad N, Gomez-Cardona E, Wang H, Wilson JA, Kumar A, Hobman TC, Julien O. Identification of Human Host Substrates of the SARS-CoV-2 M pro and PL pro Using Subtiligase N-Terminomics. ACS Infect Dis 2023; 9:749-761. [PMID: 37011043 PMCID: PMC10081575 DOI: 10.1021/acsinfecdis.2c00458] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Indexed: 04/04/2023]
Abstract
The recent emergence of SARS-CoV-2 in the human population has caused a global pandemic. The virus encodes two proteases, Mpro and PLpro, that are thought to play key roles in the suppression of host protein synthesis and immune response evasion during infection. To identify the specific host cell substrates of these proteases, active recombinant SARS-CoV-2 Mpro and PLpro were added to A549 and Jurkat human cell lysates, and subtiligase-mediated N-terminomics was used to capture and enrich protease substrate fragments. The precise location of each cleavage site was identified using mass spectrometry. Here, we report the identification of over 200 human host proteins that are potential substrates for SARS-CoV-2 Mpro and PLpro and provide a global mapping of proteolysis for these two viral proteases in vitro. Modulating proteolysis of these substrates will increase our understanding of SARS-CoV-2 pathobiology and COVID-19.
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Affiliation(s)
- Shu Y. Luo
- Department
of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Eman W. Moussa
- Department
of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Joaquin Lopez-Orozco
- Department
of Cell Biology, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Alberto Felix-Lopez
- Department
of Medical Microbiology & Immunology, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Ray Ishida
- Department
of Medical Microbiology & Immunology, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Nawell Fayad
- Department
of Cell Biology, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Erik Gomez-Cardona
- Department
of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Henry Wang
- Department
of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Joyce A. Wilson
- Department
of Biochemistry, Microbiology & Immunology, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E5, Canada
| | - Anil Kumar
- Department
of Biochemistry, Microbiology & Immunology, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E5, Canada
| | - Tom C. Hobman
- Department
of Cell Biology, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
- Department
of Medical Microbiology & Immunology, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
- Li
Ka Shing Institute of Virology, Edmonton, Alberta T6G
2E1, Canada
| | - Olivier Julien
- Department
of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
- Li
Ka Shing Institute of Virology, Edmonton, Alberta T6G
2E1, Canada
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5
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Girardi E, Messmer M, Lopez P, Fender A, Chicher J, Chane-Woon-Ming B, Hammann P, Pfeffer S. Proteomics-based determination of double-stranded RNA interactome reveals known and new factors involved in Sindbis virus infection. RNA (NEW YORK, N.Y.) 2023; 29:361-375. [PMID: 36617674 PMCID: PMC9945444 DOI: 10.1261/rna.079270.122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 12/15/2022] [Indexed: 06/17/2023]
Abstract
Viruses are obligate intracellular parasites, which depend on the host cellular machineries to replicate their genome and complete their infectious cycle. Long double-stranded (ds)RNA is a common viral by-product originating during RNA virus replication and is universally sensed as a danger signal to trigger the antiviral response. As a result, viruses hide dsRNA intermediates into viral replication factories and have evolved strategies to hijack cellular proteins for their benefit. The characterization of the host factors associated with viral dsRNA and involved in viral replication remains a major challenge to develop new antiviral drugs against RNA viruses. Here, we performed anti-dsRNA immunoprecipitation followed by mass spectrometry analysis to fully characterize the dsRNA interactome in Sindbis virus (SINV) infected human cells. Among the identified proteins, we characterized SFPQ (splicing factor, proline-glutamine rich) as a new dsRNA-associated proviral factor upon SINV infection. We showed that SFPQ depletion reduces SINV infection in human HCT116 and SK-N-BE(2) cells, suggesting that SFPQ enhances viral production. We demonstrated that the cytoplasmic fraction of SFPQ partially colocalizes with dsRNA upon SINV infection. In agreement, we proved by RNA-IP that SFPQ can bind dsRNA and viral RNA. Furthermore, we showed that overexpression of a wild-type, but not an RNA binding mutant SFPQ, increased viral infection, suggesting that RNA binding is essential for its positive effect on the virus. Overall, this study provides the community with a compendium of dsRNA-associated factors during viral infection and identifies SFPQ as a new proviral dsRNA binding protein.
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Affiliation(s)
- Erika Girardi
- Université de Strasbourg, Architecture et Réactivité de l'ARN, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084 Strasbourg France
| | - Mélanie Messmer
- Université de Strasbourg, Architecture et Réactivité de l'ARN, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084 Strasbourg France
| | - Paula Lopez
- Université de Strasbourg, Architecture et Réactivité de l'ARN, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084 Strasbourg France
| | - Aurélie Fender
- Université de Strasbourg, Architecture et Réactivité de l'ARN, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084 Strasbourg France
| | - Johana Chicher
- Université de Strasbourg, Institut de Biologie Moléculaire et Cellulaire du CNRS, Plateforme Protéomique Strasbourg-Esplanade, 67084 Strasbourg France
| | - Béatrice Chane-Woon-Ming
- Université de Strasbourg, Architecture et Réactivité de l'ARN, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084 Strasbourg France
| | - Philippe Hammann
- Université de Strasbourg, Institut de Biologie Moléculaire et Cellulaire du CNRS, Plateforme Protéomique Strasbourg-Esplanade, 67084 Strasbourg France
| | - Sébastien Pfeffer
- Université de Strasbourg, Architecture et Réactivité de l'ARN, Institut de Biologie Moléculaire et Cellulaire du CNRS, 67084 Strasbourg France
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6
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Kok V, Tang JY, Eng G, Tan SY, Chin J, Quek C, Lai WX, Lim TK, Lin Q, Chua J, Cheong J. SFPQ promotes RAS-mutant cancer cell growth by modulating 5′-UTR mediated translational control of CK1α. NAR Cancer 2022; 4:zcac027. [PMID: 36177382 PMCID: PMC9513841 DOI: 10.1093/narcan/zcac027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 08/31/2022] [Accepted: 09/07/2022] [Indexed: 11/12/2022] Open
Abstract
Abstract
Oncogenic mutations in the RAS family of small GTPases are commonly found in human cancers and they promote tumorigenesis by altering gene expression networks. We previously demonstrated that Casein Kinase 1α (CK1α), a member of the CK1 family of serine/threonine kinases, is post-transcriptionally upregulated by oncogenic RAS signaling. Here, we report that the CK1α mRNA contains an exceptionally long 5′-untranslated region (UTR) harbouring several translational control elements, implicating its involvement in translational regulation. We demonstrate that the CK1α 5′-UTR functions as an IRES element in HCT-116 colon cancer cells to promote cap-independent translation. Using tobramycin-affinity RNA-pulldown assays coupled with identification via mass spectrometry, we identified several CK1α 5′-UTR-binding proteins, including SFPQ. We show that RNA interference targeting SFPQ reduced CK1α protein abundance and partially blocked RAS-mutant colon cancer cell growth. Importantly, transcript and protein levels of SFPQ and other CK1α 5′-UTR-associated RNA-binding proteins (RBPs) are found to be elevated in early stages of RAS-mutant cancers, including colorectal and lung adenocarcinoma. Taken together, our study uncovers a previously unappreciated role of RBPs in promoting RAS-mutant cancer cell growth and their potential to serve as promising biomarkers as well as tractable therapeutic targets in cancers driven by oncogenic RAS.
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Affiliation(s)
- Venetia Jing Tong Kok
- Precision Medicine Translational Research Programme, Yong Loo Lin School of Medicine (YLLSoM), National University of Singapore , Singapore
| | - Jia Ying Tang
- Precision Medicine Translational Research Programme, Yong Loo Lin School of Medicine (YLLSoM), National University of Singapore , Singapore
| | - Gracie Wee Ling Eng
- Precision Medicine Translational Research Programme, Yong Loo Lin School of Medicine (YLLSoM), National University of Singapore , Singapore
| | - Shin Yi Tan
- Precision Medicine Translational Research Programme, Yong Loo Lin School of Medicine (YLLSoM), National University of Singapore , Singapore
| | - Joseph Tin Foong Chin
- Precision Medicine Translational Research Programme, Yong Loo Lin School of Medicine (YLLSoM), National University of Singapore , Singapore
| | - Chun Hian Quek
- School of Applied Science , Temasek Polytechnic, Singapore
| | - Wei Xuan Lai
- Department of Physiology, YLLSoM, National University of Singapore , Singapore
| | - Teck Kwang Lim
- Department of Biological Sciences, Faculty of Science, National University of Singapore , Singapore
| | - Qingsong Lin
- Department of Biological Sciences, Faculty of Science, National University of Singapore , Singapore
| | - John Jia En Chua
- Department of Physiology, YLLSoM, National University of Singapore , Singapore
- LSI Neurobiology Programme, National University of Singapore , Singapore
- Healthy Longevity Translational Research Programme, YLLSoM, National University of Singapore , Singapore
| | - Jit Kong Cheong
- Precision Medicine Translational Research Programme, Yong Loo Lin School of Medicine (YLLSoM), National University of Singapore , Singapore
- NUS Centre for Cancer Research, National University of Singapore , Singapore
- Department of Biochemistry, YLLSoM, National University of Singapore , Singapore
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7
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Labeau A, Fery-Simonian L, Lefevre-Utile A, Pourcelot M, Bonnet-Madin L, Soumelis V, Lotteau V, Vidalain PO, Amara A, Meertens L. Characterization and functional interrogation of the SARS-CoV-2 RNA interactome. Cell Rep 2022; 39:110744. [PMID: 35477000 PMCID: PMC9040432 DOI: 10.1016/j.celrep.2022.110744] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 07/28/2021] [Accepted: 04/07/2022] [Indexed: 12/12/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of the COVID-19 pandemic, which has led to a devastating global health crisis. The emergence of variants that escape neutralizing responses emphasizes the urgent need to deepen our understanding of SARS-CoV-2 biology. Using a comprehensive identification of RNA-binding proteins (RBPs) by mass spectrometry (ChIRP-MS) approach, we identify 107 high-confidence cellular factors that interact with the SARS-CoV-2 genome during infection. By systematically knocking down their expression in human lung epithelial cells, we find that the majority of the identified RBPs are SARS-CoV-2 proviral factors. In particular, we show that HNRNPA2B1, ILF3, QKI, and SFPQ interact with the SARS-CoV-2 genome and promote viral RNA amplification. Our study provides valuable resources for future investigations into the mechanisms of SARS-CoV-2 replication and the identification of host-centered antiviral therapies.
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Affiliation(s)
- Athéna Labeau
- Université Paris Cité, INSERM U944 CNRS 7212, Institut de Recherche Saint-Louis, Hôpital Saint-Louis, 75010 Paris, France
| | - Luc Fery-Simonian
- Université Paris Cité, INSERM U944 CNRS 7212, Institut de Recherche Saint-Louis, Hôpital Saint-Louis, 75010 Paris, France
| | - Alain Lefevre-Utile
- Université Paris Cité, INSERM U976, Institut de Recherche Saint-Louis, Hôpital Saint-Louis, 75010 Paris, France
| | - Marie Pourcelot
- Université Paris Cité, INSERM U944 CNRS 7212, Institut de Recherche Saint-Louis, Hôpital Saint-Louis, 75010 Paris, France
| | - Lucie Bonnet-Madin
- Université Paris Cité, INSERM U944 CNRS 7212, Institut de Recherche Saint-Louis, Hôpital Saint-Louis, 75010 Paris, France
| | - Vassili Soumelis
- Université Paris Cité, INSERM U976, Institut de Recherche Saint-Louis, Hôpital Saint-Louis, 75010 Paris, France
| | - Vincent Lotteau
- Centre International de Recherche en Infectiologie (CIRI), Univ Lyon, Inserm U1111, Université Claude Bernard Lyon 1, CNRS UMR5308, ENS de Lyon, 69007 Lyon, France
| | - Pierre-Olivier Vidalain
- Centre International de Recherche en Infectiologie (CIRI), Univ Lyon, Inserm U1111, Université Claude Bernard Lyon 1, CNRS UMR5308, ENS de Lyon, 69007 Lyon, France
| | - Ali Amara
- Université Paris Cité, INSERM U944 CNRS 7212, Institut de Recherche Saint-Louis, Hôpital Saint-Louis, 75010 Paris, France.
| | - Laurent Meertens
- Université Paris Cité, INSERM U944 CNRS 7212, Institut de Recherche Saint-Louis, Hôpital Saint-Louis, 75010 Paris, France.
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8
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Shadrina OA, Kikhay TF, Agapkina YY, Gottikh MB. SFPQ and NONO Proteins and Long Non-Coding NEAT1 RNA: Cellular Functions and Role in the HIV-1 Life Cycle. Mol Biol 2022. [DOI: 10.1134/s0026893322020133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Contu L, Balistreri G, Domanski M, Uldry AC, Mühlemann O. Characterisation of the Semliki Forest Virus-host cell interactome reveals the viral capsid protein as an inhibitor of nonsense-mediated mRNA decay. PLoS Pathog 2021; 17:e1009603. [PMID: 34019569 PMCID: PMC8174725 DOI: 10.1371/journal.ppat.1009603] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 06/03/2021] [Accepted: 05/03/2021] [Indexed: 01/08/2023] Open
Abstract
The positive-sense, single-stranded RNA alphaviruses pose a potential epidemic threat. Understanding the complex interactions between the viral and the host cell proteins is crucial for elucidating the mechanisms underlying successful virus replication strategies and for developing specific antiviral interventions. Here we present the first comprehensive protein-protein interaction map between the proteins of Semliki Forest Virus (SFV), a mosquito-borne member of the alphaviruses, and host cell proteins. Among the many identified cellular interactors of SFV proteins, the enrichment of factors involved in translation and nonsense-mediated mRNA decay (NMD) was striking, reflecting the virus' hijacking of the translation machinery and indicating viral countermeasures for escaping NMD by inhibiting NMD at later time points during the infectious cycle. In addition to observing a general inhibition of NMD about 4 hours post infection, we also demonstrate that transient expression of the SFV capsid protein is sufficient to inhibit NMD in cells, suggesting that the massive production of capsid protein during the SFV reproduction cycle is responsible for NMD inhibition.
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Affiliation(s)
- Lara Contu
- Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Giuseppe Balistreri
- Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
- Queensland Brain Institute, The University of Queensland, Brisbane, Australia
| | - Michal Domanski
- Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
| | - Anne-Christine Uldry
- Proteomics & Mass Spectrometry Core Facility, Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Oliver Mühlemann
- Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
- * E-mail:
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10
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Li W, Liu C, Huang Z, Shi L, Zhong C, Zhou W, Meng P, Li Z, Wang S, Luo F, Yan J, Wu T. AKR1B10 negatively regulates autophagy through reducing GAPDH upon glucose starvation in colon cancer. J Cell Sci 2021; 134:237788. [PMID: 33758077 DOI: 10.1242/jcs.255273] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 03/12/2021] [Indexed: 12/17/2022] Open
Abstract
Autophagy is considered to be an important switch for facilitating normal to malignant cell transformation during colorectal cancer development. Consistent with other reports, we found that the membrane receptor Neuropilin1 (NRP1) is greatly upregulated in colon cancer cells that underwent autophagy upon glucose deprivation. However, the mechanism underlying NRP1 regulation of autophagy is unknown. We found that knockdown of NRP1 inhibits autophagy and largely upregulates the expression of aldo-keto reductase family 1 B10 (AKR1B10). Moreover, we demonstrated that AKR1B10 interacts with and inhibits the nuclear importation of glyceraldehyde-3-phosphate dehydrogenase (GAPDH), and then subsequently represses autophagy. Interestingly, we also found that an NADPH-dependent reduction reaction could be induced when AKR1B10 interacts with GAPDH, and the reductase activity of AKR1B10 is important for its repression of autophagy. Together, our findings unravel a novel mechanism of NRP1 in regulating autophagy through AKR1B10.
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Affiliation(s)
- Wanyun Li
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Cong Liu
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Zilan Huang
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Lei Shi
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Chuanqi Zhong
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cellular Signaling Network, School of Life Sciences, Xiamen University, Xiamen 361000, China
| | - Wenwen Zhou
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Peipei Meng
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Zhenyu Li
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Shengyu Wang
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Fanghong Luo
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Jianghua Yan
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China
| | - Ting Wu
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen 361000, China.,Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen 361000, China.,Xiamen University Research Center of Retroperitoneal Tumor Committee of Oncology Society of Chinese Medical Association, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen 361000, China.,Joint Laboratory of Xiamen University School of Medicine and Shanghai Jiangxia Blood Technology Co., Ltd., Xiamen 361000, China
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11
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Abdullah SW, Han S, Wu J, Zhang Y, Bai M, Jin Y, Zhi X, Guan J, Sun S, Guo H. The DDX23 Negatively Regulates Translation and Replication of Foot-and-Mouth Disease Virus and Is Degraded by 3C Proteinase. Viruses 2020; 12:E1348. [PMID: 33255534 PMCID: PMC7760909 DOI: 10.3390/v12121348] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/16/2020] [Accepted: 11/20/2020] [Indexed: 12/12/2022] Open
Abstract
DEAD-box helicase 23 (DDX23) is a host nuclear helicase, which is a part of the spliceosomal complex and involved in pre-mRNA splicing. To investigate whether DDX23, an internal ribosomal entry sites transacting factor (ITAF) affects foot-and-mouth disease virus (FMDV) replication and translation through internal ribosome entry site (IRES)-dependent manner. For this, we utilized a pull-down assay, Western blotting, quantitative real-time PCR, confocal microscopy, overexpression and small interfering RNA knockdown, as well as the median tissue culture infective dose. Our findings showed that FMDV infection inhibited DDX23 expression and the overexpression of DDX23 reduced viral replication, however, CRISPR Cas9 knockout/small interfering RNA knockdown increased FMDV replication. FMDV IRES domain III and IV interacted with DDX23, whereas DDX23 interacted with FMDV 3C proteinase and significantly degraded. The enzymatic activity of FMDV 3C proteinase degraded DDX23, whereas FMDV degraded DDX23 via the lysosomal pathway. Additionally, IRES-driven translation was suppressed in DDX23-overexpressing cells, and was enhanced in DDX23 knocked down. Collectively, our results demonstrated that DDX23 negatively affects FMDV IRES-dependent translation, which could be a useful target for the design of antiviral drugs.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Shiqi Sun
- State Key Laboratory of Veterinary Etiological Biology, O.I.E./China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (S.W.A.); (S.H.); (J.W.); (Y.Z.); (M.B.); (Y.J.); (X.Z.); (J.G.)
| | - Huichen Guo
- State Key Laboratory of Veterinary Etiological Biology, O.I.E./China National Foot-and-Mouth Disease Reference Laboratory, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China; (S.W.A.); (S.H.); (J.W.); (Y.Z.); (M.B.); (Y.J.); (X.Z.); (J.G.)
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