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  1. Article ; Online: The CARD8 inflammasome dictates HIV/SIV pathogenesis and disease progression.

    Wang, Qiankun / Clark, Kolin M / Tiwari, Ritudhwaj / Raju, Nagarajan / Tharp, Gregory K / Rogers, Jeffrey / Harris, R Alan / Raveendran, Muthuswamy / Bosinger, Steven E / Burdo, Tricia H / Silvestri, Guido / Shan, Liang

    Cell

    2024  Volume 187, Issue 5, Page(s) 1223–1237.e16

    Abstract: ... While ... ...

    Abstract While CD4
    MeSH term(s) Animals ; Humans ; Mice ; CARD Signaling Adaptor Proteins/genetics ; CARD Signaling Adaptor Proteins/metabolism ; CD4-Positive T-Lymphocytes/metabolism ; Disease Progression ; HIV Infections/pathology ; Inflammasomes/metabolism ; Neoplasm Proteins/metabolism ; Simian Acquired Immunodeficiency Syndrome/pathology ; Simian Immunodeficiency Virus/physiology ; Viremia ; HIV/physiology
    Chemical Substances CARD Signaling Adaptor Proteins ; CARD8 protein, human ; Inflammasomes ; Neoplasm Proteins
    Language English
    Publishing date 2024-02-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 187009-9
    ISSN 1097-4172 ; 0092-8674
    ISSN (online) 1097-4172
    ISSN 0092-8674
    DOI 10.1016/j.cell.2024.01.048
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Structural similarity-based prediction of host factors associated with SARS-CoV-2 infection and pathogenesis.

    Tiwari, Ritudhwaj / Mishra, Anurag R / Gupta, Advika / Nayak, Debasis

    Journal of biomolecular structure & dynamics

    2021  Volume 40, Issue 13, Page(s) 5868–5879

    Abstract: The current pandemic resulted from SARS-CoV-2 still remains as the major public health concern globally. The precise mechanism of viral pathogenesis is not fully understood, which remains a major hurdle for medical intervention. Here we generated an ... ...

    Abstract The current pandemic resulted from SARS-CoV-2 still remains as the major public health concern globally. The precise mechanism of viral pathogenesis is not fully understood, which remains a major hurdle for medical intervention. Here we generated an interactome profile of protein-protein interactions based on host and viral protein structural similarities information. Further computational biological study combined with Gene enrichment analysis predicted key enriched pathways associated with viral pathogenesis. The results show that axon guidance, membrane trafficking, vesicle-mediated transport, apoptosis, clathrin-mediated endocytosis, Vpu mediated degradation of CD4 T cell, and interferon-gamma signaling are key events associated in SARS-CoV-2 life cycle. Further, degree centrality analysis reveals that IRF1/9/7, TP53, and CASP3, UBA52, and UBC are vital proteins for IFN-γ-mediated signaling, apoptosis, and proteasomal degradation of CD4, respectively. We crafted chronological events of the virus life cycle. The SARS-CoV-2 enters through clathrin-mediated endocytosis, and the genome is trafficked to the early endosomes in a RAB5-dependent manner. It is predicted to replicate in a double-membrane vesicle (DMV) composed of the endoplasmic reticulum, autophagosome, and ERAD machinery. The SARS-CoV-2 down-regulates host translational machinery by interacting with protein kinase R, PKR-like endoplasmic reticulum kinase, and heme-regulated inhibitor and can phosphorylate eIF2a. The virion assembly occurs in the ER-Golgi intermediate compartment (ERGIC) organized by the spike and matrix protein. Collectively, we have established a spatial link between viral entry, RNA synthesis, assembly, pathogenesis, and their associated diverse host factors, those could pave the way for therapeutic intervention.
    MeSH term(s) COVID-19/virology ; Clathrin/genetics ; Clathrin/metabolism ; Endocytosis ; Host-Pathogen Interactions ; Humans ; SARS-CoV-2/pathogenicity ; SARS-CoV-2/physiology ; Virus Replication
    Chemical Substances Clathrin
    Language English
    Publishing date 2021-01-28
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 49157-3
    ISSN 1538-0254 ; 0739-1102
    ISSN (online) 1538-0254
    ISSN 0739-1102
    DOI 10.1080/07391102.2021.1874532
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: In silico

    Tiwari, Ritudhwaj / Mishra, Anurag R / Mikaeloff, Flora / Gupta, Soham / Mirazimi, Ali / Byrareddy, Siddappa N / Neogi, Ujjwal / Nayak, Debasis

    Computational and structural biotechnology journal

    2020  Volume 18, Page(s) 3734–3744

    Abstract: The emergence and continued spread of SARS-CoV-2 have resulted in a public health emergency across the globe. The lack of knowledge on the precise mechanism of viral pathogenesis is impeding medical intervention. In this study, we have taken ... ...

    Abstract The emergence and continued spread of SARS-CoV-2 have resulted in a public health emergency across the globe. The lack of knowledge on the precise mechanism of viral pathogenesis is impeding medical intervention. In this study, we have taken both
    Keywords covid19
    Language English
    Publishing date 2020-11-11
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2694435-2
    ISSN 2001-0370
    ISSN 2001-0370
    DOI 10.1016/j.csbj.2020.11.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Beyond Tethering the Viral Particles: Immunomodulatory Functions of Tetherin (

    Tiwari, Ritudhwaj / de la Torre, Juan C / McGavern, Dorian B / Nayak, Debasis

    DNA and cell biology

    2019  Volume 38, Issue 11, Page(s) 1170–1177

    Abstract: Host response to viral infection is a highly regulated process involving engagement of various host factors, cytokines, chemokines, and stimulatory signals that pave the way for an antiviral immune response. The response is manifested in terms of viral ... ...

    Abstract Host response to viral infection is a highly regulated process involving engagement of various host factors, cytokines, chemokines, and stimulatory signals that pave the way for an antiviral immune response. The response is manifested in terms of viral sequestration, phagocytosis, and inhibition of genome replication, and, finally, if required, lymphocyte-mediated clearance of virally infected cells. During this process, cross-talk between viral and host factors can shape disease outcomes and immunopathology. Bone marrow stromal antigen 2 (
    MeSH term(s) Adaptive Immunity/genetics ; Animals ; Antigens, CD/genetics ; Antigens, CD/physiology ; GPI-Linked Proteins/genetics ; GPI-Linked Proteins/physiology ; Host-Pathogen Interactions/genetics ; Host-Pathogen Interactions/immunology ; Humans ; Immunomodulation/genetics ; Immunomodulation/immunology ; Virion/immunology ; Virion/metabolism ; Virus Diseases/genetics ; Virus Diseases/immunology
    Chemical Substances Antigens, CD ; BST2 protein, human ; GPI-Linked Proteins
    Language English
    Publishing date 2019-09-09
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1024454-2
    ISSN 1557-7430 ; 0198-0238 ; 1044-5498
    ISSN (online) 1557-7430
    ISSN 0198-0238 ; 1044-5498
    DOI 10.1089/dna.2019.4777
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: In silico and In vitro Studies Reveal Complement System Drives Coagulation Cascade in SARS-CoV-2 Pathogenesis

    Tiwari, Ritudhwaj / Mishra, Anurag R. / Mikaeloff, Flora / Gupta, Soham / Mirazimi, Ali / Byrareddy, Siddappa N. / Neogi, Ujjwal / Nayak, Debasis

    Computational and Structural Biotechnology Journal ; ISSN 2001-0370

    2020  

    Keywords covid19
    Language English
    Publisher Elsevier BV
    Publishing country us
    Document type Article ; Online
    DOI 10.1016/j.csbj.2020.11.005
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Oncotargeting by Vesicular Stomatitis Virus (VSV): Advances in Cancer Therapy.

    Bishnoi, Suman / Tiwari, Ritudhwaj / Gupta, Sharad / Byrareddy, Siddappa N / Nayak, Debasis

    Viruses

    2018  Volume 10, Issue 2

    Abstract: Modern oncotherapy approaches are based on inducing controlled apoptosis in tumor cells. Although a number of apoptosis-induction approaches are available, site-specific delivery of therapeutic agents still remain the biggest hurdle in achieving the ... ...

    Abstract Modern oncotherapy approaches are based on inducing controlled apoptosis in tumor cells. Although a number of apoptosis-induction approaches are available, site-specific delivery of therapeutic agents still remain the biggest hurdle in achieving the desired cancer treatment benefit. Additionally, systemic treatment-induced toxicity remains a major limiting factor in chemotherapy. To specifically address drug-accessibility and chemotherapy side effects, oncolytic virotherapy (OV) has emerged as a novel cancer treatment alternative. In OV, recombinant viruses with higher replication capacity and stronger lytic properties are being considered for tumor cell-targeting and subsequent cell lysing. Successful application of OVs lies in achieving strict tumor-specific tropism called oncotropism, which is contingent upon the biophysical interactions of tumor cell surface receptors with viral receptors and subsequent replication of oncolytic viruses in cancer cells. In this direction, few viral vector platforms have been developed and some of these have entered pre-clinical/clinical trials. Among these, the Vesicular stomatitis virus (VSV)-based platform shows high promise, as it is not pathogenic to humans. Further, modern molecular biology techniques such as reverse genetics tools have favorably advanced this field by creating efficient recombinant VSVs for OV; some have entered into clinical trials. In this review, we discuss the current status of VSV based oncotherapy, challenges, and future perspectives regarding its therapeutic applications in the cancer treatment.
    MeSH term(s) Animals ; Apoptosis/genetics ; Biomarkers, Tumor ; Genetic Vectors/genetics ; Humans ; Immune System ; Immunomodulation ; Interferon Type I/metabolism ; Mice ; Molecular Targeted Therapy ; Neoplasms/etiology ; Neoplasms/metabolism ; Neoplasms/pathology ; Neoplasms/therapy ; Oncolytic Virotherapy/methods ; Oncolytic Viruses/genetics ; Signal Transduction ; Vesicular stomatitis Indiana virus/genetics
    Chemical Substances Biomarkers, Tumor ; Interferon Type I
    Language English
    Publishing date 2018-02-23
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v10020090
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: In silico and In vitro Studies Reveal Complement System Drives Coagulation Cascade in SARS-CoV-2 Pathogenesis

    Tiwari, Ritudhwaj / Mishra, Anurag R / Mikaeloff, Flora / Gupta, Soham / Mirazimi, Ali / Byrareddy, Siddappa N / Neogi, Ujjwal / Nayak, Debasis

    Abstract: The emergence and continued spread of SARS-CoV-2 have resulted in a public health emergency across the globe. The lack of knowledge on the precise mechanism of viral pathogenesis is impeding medical intervention. In this study, we have taken both in ... ...

    Abstract The emergence and continued spread of SARS-CoV-2 have resulted in a public health emergency across the globe. The lack of knowledge on the precise mechanism of viral pathogenesis is impeding medical intervention. In this study, we have taken both in silico and in vitro experimental approaches to unravel the mechanism of viral pathogenesis associated with complement and coagulation pathways. Based on the structural similarities of viral and host proteins, we initially generated a protein-protein interactome profile. Further computational analysis combined with Gene Ontology (GO) analysis and KEGG pathway analysis predicted key annotated pathways associated with viral pathogenesis. These include MAPK signaling, complement, and coagulation cascades, endocytosis, PD-L1 expression, PD-1 checkpoint pathway in cancer and C-type lectin receptor signaling pathways. Degree centrality analysis pinned down to MAPK1, MAPK3, AKT1, and SRC are crucial drivers of signaling pathways and often overlap with the associated pathways. Most strikingly, the complement and coagulation cascade and platelet activation pathways are interconnected, presumably directing thrombotic activity observed in severe or critical cases of COVID-19. This is complemented by in vitro studies of Huh7 cell infection and analysis of the transcriptome and proteomic profile of gene candidates during viral infection. The most known candidates associated with complement and coagulation cascade signaling by KEGG pathway analysis showed significant up-regulated fold change during viral infection. Collectively both in silico and in vitro studies suggest complement and coagulation cascade signaling are a mechanism for intravascular coagulation, thrombotic changes, and associated complications in severe COVID-19 patients.
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #919689
    Database COVID19

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