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  1. Article ; Online: Cytokine Responses to Adenovirus and Adenovirus Vectors.

    Atasheva, Svetlana / Shayakhmetov, Dmitry M

    Viruses

    2022  Volume 14, Issue 5

    Abstract: The expression of cytokines and chemokines in response to adenovirus infection is tightly regulated by the innate immune system. Cytokine-mediated toxicity and cytokine storm are known clinical phenomena observed following naturally disseminated ... ...

    Abstract The expression of cytokines and chemokines in response to adenovirus infection is tightly regulated by the innate immune system. Cytokine-mediated toxicity and cytokine storm are known clinical phenomena observed following naturally disseminated adenovirus infection in immunocompromised hosts as well as when extremely high doses of adenovirus vectors are injected intravenously. This dose-dependent, cytokine-mediated toxicity compromises the safety of adenovirus-based vectors and represents a critical problem, limiting their utility for gene therapy applications and the therapy of disseminated cancer, where intravenous injection of adenovirus vectors may provide therapeutic benefits. The mechanisms triggering severe cytokine response are not sufficiently understood, prompting efforts to further investigate this phenomenon, especially in clinically relevant settings. In this review, we summarize the current knowledge on cytokine and chemokine activation in response to adenovirus- and adenovirus-based vectors and discuss the underlying mechanisms that may trigger acute cytokine storm syndrome. First, we review profiles of cytokines and chemokines that are activated in response to adenovirus infection initiated via different routes. Second, we discuss the molecular mechanisms that lead to cytokine and chemokine transcriptional activation. We further highlight how immune cell types in different organs contribute to synthesis and systemic release of cytokines and chemokines in response to adenovirus sensing. Finally, we review host factors that can limit cytokine and chemokine expression and discuss currently available and potential future interventional approaches that allow for the mitigation of the severity of the cytokine storm syndrome. Effective cytokine-targeted interventional approaches may improve the safety of systemic adenovirus delivery and thus broaden the potential clinical utility of adenovirus-based therapeutic vectors.
    MeSH term(s) Adenoviridae ; Adenoviridae Infections ; Chemokines ; Cytokine Release Syndrome ; Cytokines/metabolism ; Humans ; Immunity, Innate
    Chemical Substances Chemokines ; Cytokines
    Language English
    Publishing date 2022-04-24
    Publishing country Switzerland
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v14050888
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Structural Model for Factor X Inhibition of IgM and Complement-Mediated Neutralization of Adenovirus.

    Wagner, Nicole / Shayakhmetov, Dmitry M / Stewart, Phoebe L

    Viruses

    2023  Volume 15, Issue 6

    Abstract: Adenovirus has strong therapeutic potential as an oncolytic virus and gene therapy vector. However, injecting human species C serotype 5 adenovirus, HAdv-C5, into the bloodstream leads to numerous interactions with plasma proteins that affect viral ... ...

    Abstract Adenovirus has strong therapeutic potential as an oncolytic virus and gene therapy vector. However, injecting human species C serotype 5 adenovirus, HAdv-C5, into the bloodstream leads to numerous interactions with plasma proteins that affect viral tropism and biodistribution, and can lead to potent immune responses and viral neutralization. The HAdv/factor X (FX) interaction facilitates highly efficient liver transduction and protects virus particles from complement-mediated neutralization after intravenous delivery. Ablating the FX interaction site on the HAdv-C5 capsid leaves the virus susceptible to neutralization by natural IgM followed by activation of the complement cascade and covalent binding of complement components C4b and C3b to the viral capsid. Here we present structural models for IgM and complement components C1, C4b, and C3b in complex with HAdv-C5. Molecular dynamics simulations indicate that when C3b binds near the vertex, multiple stabilizing interactions can be formed between C3b, penton base, and fiber. These interactions may stabilize the vertex region of the capsid and prevent release of the virally encoded membrane lytic factor, protein VI, which is packaged inside of the viral capsid, thus effectively neutralizing the virus. In a situation where FX and IgM are competing for binding to the capsid, IgM may not be able to form a bent conformation in which most of its Fab arms interact with the capsid. Our structural modeling of the competitive interaction of FX and IgM with HAdv-C5 allows us to propose a mechanistic model for FX inhibition of IgM-mediated virus neutralization. According to this model, although IgM may bind to the capsid, in the presence of FX it will likely retain a planar conformation and thus be unable to promote activation of the complement cascade at the virus surface.
    MeSH term(s) Humans ; Adenoviridae ; Factor X/metabolism ; Tissue Distribution ; Complement System Proteins/metabolism ; Adenoviruses, Human/genetics ; Capsid Proteins/genetics ; Immunoglobulin M ; Models, Structural
    Chemical Substances Factor X (9001-29-0) ; Complement System Proteins (9007-36-7) ; Capsid Proteins ; Immunoglobulin M
    Language English
    Publishing date 2023-06-09
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15061343
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Oncolytic Viruses for Systemic Administration: Engineering a Whole Different Animal.

    Atasheva, Svetlana / Shayakhmetov, Dmitry M

    Molecular therapy : the journal of the American Society of Gene Therapy

    2021  Volume 29, Issue 3, Page(s) 904–907

    MeSH term(s) Animals ; Genetic Engineering/methods ; Humans ; Neoplasms/genetics ; Neoplasms/therapy ; Oncolytic Virotherapy/methods ; Oncolytic Viruses/genetics
    Language English
    Publishing date 2021-02-05
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2010592-7
    ISSN 1525-0024 ; 1525-0016
    ISSN (online) 1525-0024
    ISSN 1525-0016
    DOI 10.1016/j.ymthe.2021.02.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Adenovirus-based vaccines-a platform for pandemic preparedness against emerging viral pathogens.

    Coughlan, Lynda / Kremer, Eric J / Shayakhmetov, Dmitry M

    Molecular therapy : the journal of the American Society of Gene Therapy

    2022  Volume 30, Issue 5, Page(s) 1822–1849

    Abstract: Zoonotic viruses continually pose a pandemic threat. Infection of humans with viruses for which we typically have little or no prior immunity can result in epidemics with high morbidity and mortality. These epidemics can have public health and economic ... ...

    Abstract Zoonotic viruses continually pose a pandemic threat. Infection of humans with viruses for which we typically have little or no prior immunity can result in epidemics with high morbidity and mortality. These epidemics can have public health and economic impact and can exacerbate civil unrest or political instability. Changes in human behavior in the past few decades-increased global travel, farming intensification, the exotic animal trade, and the impact of global warming on animal migratory patterns, habitats, and ecosystems-contribute to the increased frequency of cross-species transmission events. Investing in the pre-clinical advancement of vaccine candidates against diverse emerging viral threats is crucial for pandemic preparedness. Replication-defective adenoviral (Ad) vectors have demonstrated their utility as an outbreak-responsive vaccine platform during the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic. Ad vectors are easy to engineer; are amenable to rapid, inexpensive manufacturing; are relatively safe and immunogenic in humans; and, importantly, do not require specialized cold-chain storage, making them an ideal platform for equitable global distribution or stockpiling. In this review, we discuss the progress in applying Ad-based vaccines against emerging viruses and summarize their global safety profile, as reflected by their widespread geographic use during the SARS-CoV-2 pandemic.
    MeSH term(s) Adenoviridae/genetics ; Adenovirus Vaccines ; Animals ; COVID-19/epidemiology ; COVID-19/prevention & control ; Ecosystem ; Pandemics/prevention & control ; SARS-CoV-2/genetics ; Vaccines ; Viral Vaccines
    Chemical Substances Adenovirus Vaccines ; Vaccines ; Viral Vaccines
    Language English
    Publishing date 2022-01-31
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural
    ZDB-ID 2010592-7
    ISSN 1525-0024 ; 1525-0016
    ISSN (online) 1525-0024
    ISSN 1525-0016
    DOI 10.1016/j.ymthe.2022.01.034
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Targeted, safe, and efficient gene delivery to human hematopoietic stem and progenitor cells in vivo using the engineered AVID adenovirus vector platform.

    Yao, Jia / Atasheva, Svetlana / Wagner, Nicole / Di Paolo, Nelson C / Stewart, Phoebe L / Shayakhmetov, Dmitry M

    Molecular therapy : the journal of the American Society of Gene Therapy

    2023  Volume 32, Issue 1, Page(s) 103–123

    Abstract: Targeted delivery and cell-type-specific expression of gene-editing proteins in various cell types in vivo represent major challenges for all viral and non-viral delivery platforms developed to date. Here, we describe the development and analysis of ... ...

    Abstract Targeted delivery and cell-type-specific expression of gene-editing proteins in various cell types in vivo represent major challenges for all viral and non-viral delivery platforms developed to date. Here, we describe the development and analysis of artificial vectors for intravascular delivery (AVIDs), an engineered adenovirus-based gene delivery platform that allows for highly targeted, safe, and efficient gene delivery to human hematopoietic stem and progenitor cells (HSPCs) in vivo after intravenous vector administration. Due to a set of refined structural modifications, intravenous administration of AVIDs did not trigger cytokine storm, hepatotoxicity, or thrombocytopenia. Single intravenous administration of AVIDs to humanized mice, grafted with human CD34
    MeSH term(s) Humans ; Animals ; Mice ; Hematopoietic Stem Cells/metabolism ; Gene Transfer Techniques ; Antigens, CD34/metabolism ; Genetic Therapy ; Adenoviridae/genetics ; Adenoviridae/metabolism ; Hematopoietic Stem Cell Transplantation
    Chemical Substances Antigens, CD34
    Language English
    Publishing date 2023-11-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2010592-7
    ISSN 1525-0024 ; 1525-0016
    ISSN (online) 1525-0024
    ISSN 1525-0016
    DOI 10.1016/j.ymthe.2023.10.023
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Innate immunity to adenovirus: lessons from mice.

    Atasheva, Svetlana / Yao, Jia / Shayakhmetov, Dmitry M

    FEBS letters

    2019  Volume 593, Issue 24, Page(s) 3461–3483

    Abstract: Adenovirus is a highly evolutionary successful pathogen, as it is widely prevalent across the animal kingdom, infecting hosts ranging from lizards and frogs to dolphins, birds, and humans. Although natural adenovirus infections in humans rarely cause ... ...

    Abstract Adenovirus is a highly evolutionary successful pathogen, as it is widely prevalent across the animal kingdom, infecting hosts ranging from lizards and frogs to dolphins, birds, and humans. Although natural adenovirus infections in humans rarely cause severe pathology, intravenous injection of high doses of adenovirus-based vectors triggers rapid activation of the innate immune system, leading to cytokine storm syndrome, disseminated intravascular coagulation, thrombocytopenia, and hepatotoxicity, which individually or in combination may cause morbidity and mortality. Much of the information on exactly how adenovirus activates the innate immune system has been gathered from mouse experimental systems. Intravenous administration of adenovirus to mice revealed mechanistic insights into cellular and molecular components of the innate immunity that detect adenovirus particles, activate pro-inflammatory signaling pathways and cytokine production, sequester adenovirus particles from the bloodstream, and eliminate adenovirus-infected cells. Collectively, this information greatly improved our understanding of mechanisms of activation of innate immunity to adenovirus and may pave the way for designing safer adenovirus-based vectors for therapy of genetic and acquired human diseases.
    MeSH term(s) Adenoviridae/genetics ; Adenoviridae/immunology ; Animals ; Cytokines/metabolism ; Genetic Vectors/administration & dosage ; Genetic Vectors/immunology ; Immunity, Innate ; Injections, Intravenous ; Mice ; Signal Transduction
    Chemical Substances Cytokines
    Language English
    Publishing date 2019-12-08
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 212746-5
    ISSN 1873-3468 ; 0014-5793
    ISSN (online) 1873-3468
    ISSN 0014-5793
    DOI 10.1002/1873-3468.13696
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Adenovirus sensing by the immune system.

    Atasheva, Svetlana / Shayakhmetov, Dmitry M

    Current opinion in virology

    2016  Volume 21, Page(s) 109–113

    Abstract: The host immune system developed multiple ways for recognition of viral pathogens. Upon disseminated adenovirus infection, the immune system senses adenovirus invasion from the moment it enters the bloodstream. The soluble blood factors, FX, antibodies, ... ...

    Abstract The host immune system developed multiple ways for recognition of viral pathogens. Upon disseminated adenovirus infection, the immune system senses adenovirus invasion from the moment it enters the bloodstream. The soluble blood factors, FX, antibodies, and complement, can bind and activate plethora of host-protective immune responses. Adenovirus binding to the cellular β3 integrin and endosomal membrane rupture trigger activation of IL-1α/IL-1R1 proinflammatory cascade leading to attraction of cytotoxic immune cells to the site of infection. Upon cell entry, adenovirus exposes its DNA genome in the cytoplasm and triggers DNA sensors signaling. Even when inside the nucleus, the specialized cellular machinery that recognizes the double-strand DNA breaks become activated and triggers viral DNA replication arrest. Thus, the host employs very diverse mechanisms to prevent viral dissemination.
    MeSH term(s) Adenoviridae/immunology ; Adenoviridae/physiology ; Animals ; Host-Pathogen Interactions ; Humans ; Immunity, Innate ; Virus Internalization ; Virus Replication
    Language English
    Publishing date 2016-12
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 2611378-8
    ISSN 1879-6265 ; 1879-6257
    ISSN (online) 1879-6265
    ISSN 1879-6257
    DOI 10.1016/j.coviro.2016.08.017
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: p38MAPK guards the integrity of endosomal compartments through regulating necrotic death.

    Yao, Jia / Atasheva, Svetlana / Toy, Randall / Blanchard, Emmeline L / Santangelo, Philip J / Roy, Krishnendu / Mocarski, Edward S / Shayakhmetov, Dmitry M

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 16357

    Abstract: Pathogens trigger activation of sensors of the innate immune system that initiate molecular signaling enabling appropriate host defense programs. Although recognition of pathogen-specific moieties or PAMPs by specialized receptors of the immune system is ...

    Abstract Pathogens trigger activation of sensors of the innate immune system that initiate molecular signaling enabling appropriate host defense programs. Although recognition of pathogen-specific moieties or PAMPs by specialized receptors of the immune system is well defined for a great number of pathogens, the mechanisms of sensing of pathogen-induced functional perturbations to the host cell remain poorly understood. Here we show that the disruption of endosomal compartments in macrophages by a bacterium or fully synthetic nanoparticles activates stress-response p38MAPK kinase, which triggers execution of cell death of a necrotic type. p38MAPK-mediated necrosis occurs in cells with a compound homozygous deletion of pyroptosis-inducing caspases-1 and -11, apoptotic caspase-8, and necroptosis-inducing receptor-interacting protein kinase-3 (RIPK3), indicating that all of these principal cell death mediators are dispensable for p38MAPK-induced necrosis in response to endosome rupture. p38MAPK-mediated necrosis is suppressed by the receptor-interacting protein kinase 1, RIPK1, and degradation of RIPK1 sensitizes macrophages to necrotic death. Since pathogen-induced cell death of necrotic types is implicated in host defense against infection, our results indicate that functional perturbations in host cells are sensed as a component of the innate immune system.
    MeSH term(s) Caspase 8 ; Endosomes ; Homozygote ; Humans ; Necrosis ; Pathogen-Associated Molecular Pattern Molecules ; Sequence Deletion ; p38 Mitogen-Activated Protein Kinases
    Chemical Substances Pathogen-Associated Molecular Pattern Molecules ; p38 Mitogen-Activated Protein Kinases (EC 2.7.11.24) ; Caspase 8 (EC 3.4.22.-)
    Language English
    Publishing date 2022-09-29
    Publishing country England
    Document type Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, N.I.H., Extramural
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-20786-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Virus infection recognition and early innate responses to non-enveloped viral vectors.

    Shayakhmetov, Dmitry M

    Viruses

    2010  Volume 2, Issue 1, Page(s) 244–261

    Abstract: Numerous human genetic and acquired diseases could be corrected or ameliorated if viruses are harnessed to safely and effectively deliver therapeutic genes to diseased cells and tissues in vivo. Innate immune and inflammatory response represents one of ... ...

    Abstract Numerous human genetic and acquired diseases could be corrected or ameliorated if viruses are harnessed to safely and effectively deliver therapeutic genes to diseased cells and tissues in vivo. Innate immune and inflammatory response represents one of the key stumbling blocks during the development of viral-based therapies. In this review, current data on the early innate immune responses to viruses and to the most commonly used gene therapy vectors (using adenovirus and adeno-associated virus) will be discussed. Recent findings in the field may help develop new approaches to moderate these innate immune anti-viral responses and thus improve the safety of viral vectors for human gene therapy applications.
    Language English
    Publishing date 2010-01-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v2010244
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Systemic cancer therapy with engineered adenovirus that evades innate immunity.

    Atasheva, Svetlana / Emerson, Corey C / Yao, Jia / Young, Cedrick / Stewart, Phoebe L / Shayakhmetov, Dmitry M

    Science translational medicine

    2020  Volume 12, Issue 571

    Abstract: ... natural immunoglobulin M (IgM) antibodies and coagulation factor X rapidly opsonize HAdv-C5, leading ...

    Abstract Oncolytic virus therapy is a cancer treatment modality that has the potential to improve outcomes for patients with currently incurable malignancies. Although intravascular delivery of therapeutic viruses provides access to disseminated tumors, this delivery route exposes the virus to opsonizing and inactivating factors in the blood, which limit the effective therapeutic virus dose and contribute to activation of systemic toxicities. When human species C adenovirus HAdv-C5 is delivered intravenously, natural immunoglobulin M (IgM) antibodies and coagulation factor X rapidly opsonize HAdv-C5, leading to virus sequestration in tissue macrophages and promoting infection of liver cells, triggering hepatotoxicity. Here, we showed that natural IgM antibody binds to the hypervariable region 1 (HVR1) of the main HAdv-C5 capsid protein hexon. Using compound targeted mutagenesis of hexon HVR1 loop and other functional sites that mediate virus-host interactions, we engineered and obtained a high-resolution cryo-electron microscopy structure of an adenovirus vector, Ad5-3M, which resisted inactivation by blood factors, avoided sequestration in liver macrophages, and failed to trigger hepatotoxicity after intravenous delivery. Systemic delivery of Ad5-3M to mice with localized or disseminated lung cancer led to viral replication in tumor cells, suppression of tumor growth, and prolonged survival. Thus, compound targeted mutagenesis of functional sites in the virus capsid represents a generalizable approach to tailor virus interactions with the humoral and cellular arms of the immune system, enabling generation of "designer" viruses with improved therapeutic properties.
    MeSH term(s) Adenoviridae/genetics ; Adenoviruses, Human/genetics ; Animals ; Cryoelectron Microscopy ; Genetic Vectors ; Humans ; Immunity, Innate ; Mice ; Neoplasms/therapy
    Language English
    Publishing date 2020-11-25
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2518854-9
    ISSN 1946-6242 ; 1946-6234
    ISSN (online) 1946-6242
    ISSN 1946-6234
    DOI 10.1126/scitranslmed.abc6659
    Database MEDical Literature Analysis and Retrieval System OnLINE

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