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  1. Book: Rhinoviruses

    Jans, David A.

    methods and protocols

    (Methods in molecular biology ; 1221 ; Springer protocols)

    2015  

    Author's details ed. by David A. Jans
    Series title Methods in molecular biology ; 1221
    Springer protocols
    Collection
    Language English
    Size XII, 190 S. : Ill., graph. Darst.
    Publisher Humana Press
    Publishing place New York u.a.
    Publishing country United States
    Document type Book
    HBZ-ID HT018450205
    ISBN 978-1-4939-1570-5 ; 9781493915712 ; 1-4939-1570-3 ; 1493915711
    Database Catalogue ZB MED Medicine, Health

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  2. Article ; Online: The Nuclear Transporter Importin 13 Can Regulate Stress-Induced Cell Death through the Clusterin/KU70 Axis.

    Gajewska, Katarzyna A / Jans, David A / Wagstaff, Kylie M

    Cells

    2023  Volume 12, Issue 2

    Abstract: The cellular response to environmental stresses, such as heat and oxidative stress, is dependent on extensive trafficking of stress-signalling molecules between the cytoplasm and nucleus, which potentiates stress-activated signalling pathways, eventually ...

    Abstract The cellular response to environmental stresses, such as heat and oxidative stress, is dependent on extensive trafficking of stress-signalling molecules between the cytoplasm and nucleus, which potentiates stress-activated signalling pathways, eventually resulting in cell repair or death. Although Ran-dependent nucleocytoplasmic transport mediated by members of the importin (IPO) super family of nuclear transporters is believed to be responsible for nearly all macromolecular transit between nucleus and cytoplasm, it is paradoxically known to be significantly impaired under conditions of stress. Importin 13 (IPO13) is a unique bidirectional transporter that binds to and releases cargo in a Ran-dependent manner, but in some cases, cargo release from IPO13 is affected by loading of another cargo. To investigate IPO13's role in stress-activated pathways, we performed cell-based screens to identify a multitude of binding partners of IPO13 from human brain, lung, and testes. Analysis of the IPO13 interactome intriguingly indicated more than half of the candidate binding partners to be annotated for roles in stress responses; these included the pro-apoptotic protein nuclear clusterin (nCLU), as well as the nCLU-interacting DNA repair protein KU70. Here, we show, for the first time, that unlike other IPOs which are mislocalised and non-functional, IPO13 continues to translocate between the nucleus and cytoplasm under stress, retaining the capacity to import certain cargoes, such as nCLU, but not export others, such as KU70, as shown by analysis using fluorescence recovery after photobleaching. Importantly, depletion of IPO13 reduces stress-induced import of nCLU and protects against stress-induced cell death, with concomitant protection from DNA damage during stress. Overexpression/FACS experiments demonstrate that nCLU is dependent on IPO13 to trigger stress-induced cell death via apoptosis. Taken together, these results implicate IPO13 as a novel functional nuclear transporter in cellular stress, with a key role thereby in cell fate decision.
    MeSH term(s) Humans ; Clusterin/metabolism ; Cell Nucleus/metabolism ; Cell Death ; Karyopherins/metabolism ; Active Transport, Cell Nucleus
    Chemical Substances Clusterin ; Karyopherins
    Language English
    Publishing date 2023-01-11
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells12020279
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Respiratory Syncytial Virus Matrix Protein Is Sufficient and Necessary to Remodel Host Mitochondria in Infection.

    Hu, MengJie / Bogoyevitch, Marie A / Jans, David A

    Cells

    2023  Volume 12, Issue 9

    Abstract: Although respiratory syncytial virus (RSV) is the most common cause of respiratory infection in infants, immunosuppressed adults and the elderly worldwide, there is no licensed RSV vaccine or widely applicable antiviral therapeutics We previously ... ...

    Abstract Although respiratory syncytial virus (RSV) is the most common cause of respiratory infection in infants, immunosuppressed adults and the elderly worldwide, there is no licensed RSV vaccine or widely applicable antiviral therapeutics We previously reported a staged redistribution of mitochondria with compromised respiratory activities and increased reactive oxygen species (ROS) generation during RSV infection. Here, we show for the first time that the RSV matrix protein (M) is sufficient and necessary to induce these effects. Ectopically expressed M, but not other RSV proteins, was able to induce mitochondrial perinuclear clustering, inhibition of mitochondrial respiration, loss of mitochondrial membrane potential (Δψ
    MeSH term(s) Humans ; Aged ; Reactive Oxygen Species/metabolism ; Lysine ; Respiratory Syncytial Virus, Human ; Respiratory Syncytial Virus Infections ; Mitochondria/metabolism ; Arginine
    Chemical Substances Reactive Oxygen Species ; Lysine (K3Z4F929H6) ; Arginine (94ZLA3W45F)
    Language English
    Publishing date 2023-05-04
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells12091311
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Nuclear Transporter

    Gajewska, Katarzyna A / Haynes, John M / Jans, David A

    Cells

    2022  Volume 11, Issue 12

    Abstract: Molecular transport between the nucleus and cytoplasm of the cell is mediated by the importin superfamily of transport receptors, of which the bidirectional transporter Importin 13 (IPO13) is a unique member, with a critical role in early embryonic ... ...

    Abstract Molecular transport between the nucleus and cytoplasm of the cell is mediated by the importin superfamily of transport receptors, of which the bidirectional transporter Importin 13 (IPO13) is a unique member, with a critical role in early embryonic development through nuclear transport of key regulators, such as transcription factors Pax6, Pax3, and ARX. Here, we examined the role of IPO13 in neuronal differentiation for the first time, using a mouse embryonic stem cell (ESC) model and a monolayer-based differentiation protocol to compare IPO13
    MeSH term(s) Active Transport, Cell Nucleus ; Animals ; Cell Differentiation ; Cell Nucleus/metabolism ; Cytoplasm/metabolism ; Karyopherins/metabolism ; Mice ; Neural Stem Cells/metabolism
    Chemical Substances Karyopherins ; importin 13 protein, mouse
    Language English
    Publishing date 2022-06-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells11121904
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Bimolecular Fluorescence Complementation: Quantitative Analysis of In Cell Interaction of Nuclear Transporter Importin α with Cargo Proteins.

    Lee, Alexander / Bogoyevitch, Marie A / Jans, David A

    Methods in molecular biology (Clifton, N.J.)

    2022  Volume 2502, Page(s) 215–233

    Abstract: Bimolecular fluorescence complementation utilizes the ability of two complementary nonfluorescent fragments to reconstitute and emit fluorescence when brought together through specific interaction of attached protein fragments of interest. It has been ... ...

    Abstract Bimolecular fluorescence complementation utilizes the ability of two complementary nonfluorescent fragments to reconstitute and emit fluorescence when brought together through specific interaction of attached protein fragments of interest. It has been used in several different contexts to study protein-protein interaction. Here we apply the method for the first time to study interaction of the nuclear transporter importin α and its cargoes in a cellular context. By using image analysis to quantify the extent of nuclear complexation, it is possible to gain insight into the strength of interaction in cells.
    MeSH term(s) Cell Communication/physiology ; Cell Nucleus/metabolism ; Protein Binding ; Proteins/metabolism ; Spectrometry, Fluorescence/methods ; alpha Karyopherins/metabolism
    Chemical Substances Proteins ; alpha Karyopherins
    Language English
    Publishing date 2022-04-12
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-0716-2337-4_14
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Ivermectin as a Broad-Spectrum Host-Directed Antiviral: The Real Deal?

    Jans, David A / Wagstaff, Kylie M

    Cells

    2020  Volume 9, Issue 9

    Abstract: The small molecule macrocyclic lactone ivermectin, approved by the US Food and Drug Administration for parasitic infections, has received renewed attention in the last eight years due to its apparent exciting potential as an antiviral. It was identified ... ...

    Abstract The small molecule macrocyclic lactone ivermectin, approved by the US Food and Drug Administration for parasitic infections, has received renewed attention in the last eight years due to its apparent exciting potential as an antiviral. It was identified in a high-throughput chemical screen as inhibiting recognition of the nuclear localizing Human Immunodeficiency Virus-1 (HIV-1) integrase protein by the host heterodimeric importin (IMP) α/β1 complex, and has since been shown to bind directly to IMPα to induce conformational changes that prevent its normal function in mediating nuclear import of key viral and host proteins. Excitingly, cell culture experiments show robust antiviral action towards HIV-1, dengue virus (DENV), Zika virus, West Nile virus, Venezuelan equine encephalitis virus, Chikungunya virus, Pseudorabies virus, adenovirus, and SARS-CoV-2 (COVID-19). Phase III human clinical trials have been completed for DENV, with >50 trials currently in progress worldwide for SARS-CoV-2. This mini-review discusses the case for ivermectin as a host-directed broad-spectrum antiviral agent for a range of viruses, including SARS-CoV-2.
    MeSH term(s) Animals ; Antiviral Agents/pharmacology ; Betacoronavirus/drug effects ; COVID-19 ; Cell Line ; Chlorocebus aethiops ; Coronavirus Infections/drug therapy ; Dengue/drug therapy ; Dengue Virus/drug effects ; HIV Infections/drug therapy ; HIV Integrase/drug effects ; HIV Integrase Inhibitors/pharmacology ; HIV-1/drug effects ; Humans ; Ivermectin/pharmacology ; Pandemics ; Pneumonia, Viral/drug therapy ; SARS-CoV-2 ; Vero Cells ; Zika Virus/drug effects ; Zika Virus Infection/drug therapy
    Chemical Substances Antiviral Agents ; HIV Integrase Inhibitors ; Ivermectin (70288-86-7) ; HIV Integrase (EC 2.7.7.-)
    Keywords covid19
    Language English
    Publishing date 2020-09-15
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells9092100
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Antivirals that target the host IMPα/β1-virus interface.

    Martin, Alexander J / Jans, David A

    Biochemical Society transactions

    2020  Volume 49, Issue 1, Page(s) 281–295

    Abstract: Although transport into the nucleus mediated by the importin (IMP) α/β1-heterodimer is central to viral infection, small molecule inhibitors of IMPα/β1-dependent nuclear import have only been described and shown to have antiviral activity in the last ... ...

    Abstract Although transport into the nucleus mediated by the importin (IMP) α/β1-heterodimer is central to viral infection, small molecule inhibitors of IMPα/β1-dependent nuclear import have only been described and shown to have antiviral activity in the last decade. Their robust antiviral activity is due to the strong reliance of many different viruses, including RNA viruses such as human immunodeficiency virus-1 (HIV-1), dengue (DENV), and Zika (ZIKV), on the IMPα/β1-virus interface. High-throughput compound screens have identified many agents that specifically target this interface. Of these, agents targeting IMPα/β1 directly include the FDA-approved macrocyclic lactone ivermectin, which has documented broad-spectrum activity against a whole range of viruses, including HIV-1, DENV1-4, ZIKV, West Nile virus (WNV), Venezuelan equine encephalitis virus, chikungunya, and most recently, SARS-CoV-2 (COVID-19). Ivermectin has thus far been tested in Phase III human clinical trials for DENV, while there are currently close to 80 trials in progress worldwide for SARS-CoV-2; preliminary results for randomised clinical trials (RCTs) as well as observational/retrospective studies are consistent with ivermectin affording clinical benefit. Agents that target the viral component of the IMPα/β1-virus interface include N-(4-hydroxyphenyl) retinamide (4-HPR), which specifically targets DENV/ZIKV/WNV non-structural protein 5 (NS5). 4-HPR has been shown to be a potent inhibitor of infection by DENV1-4, including in an antibody-dependent enhanced animal challenge model, as well as ZIKV, with Phase II clinical challenge trials planned. The results from rigorous RCTs will help determine the therapeutic potential of the IMPα/β1-virus interface as a target for antiviral development.
    MeSH term(s) Animals ; Antiviral Agents/pharmacology ; Humans ; Ivermectin/pharmacology ; Protein Binding/drug effects ; Viral Nonstructural Proteins/metabolism ; Virus Diseases/metabolism ; Virus Diseases/prevention & control ; Virus Diseases/virology ; Viruses/metabolism ; Viruses/pathogenicity ; alpha Karyopherins/metabolism ; beta Karyopherins/metabolism
    Chemical Substances Antiviral Agents ; TNPO1 protein, human ; Viral Nonstructural Proteins ; alpha Karyopherins ; beta Karyopherins ; karyopherin alpha 2 ; Ivermectin (70288-86-7)
    Language English
    Publishing date 2020-12-22
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 184237-7
    ISSN 1470-8752 ; 0300-5127
    ISSN (online) 1470-8752
    ISSN 0300-5127
    DOI 10.1042/BST20200568
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: The broad spectrum host-directed agent ivermectin as an antiviral for SARS-CoV-2 ?

    Jans, David A / Wagstaff, Kylie M

    Biochemical and biophysical research communications

    2020  Volume 538, Page(s) 163–172

    Abstract: FDA approved for parasitic indications, the small molecule ivermectin has been the focus of growing attention in the last 8 years due to its potential as an antiviral. We first identified ivermectin in a high throughput compound library screen as an ... ...

    Abstract FDA approved for parasitic indications, the small molecule ivermectin has been the focus of growing attention in the last 8 years due to its potential as an antiviral. We first identified ivermectin in a high throughput compound library screen as an agent potently able to inhibit recognition of the nuclear localizing Human Immunodeficiency Virus-1 (HIV-1) integrase protein by the host importin (IMP) α/β1 heterodimer, and recently demonstrated its ability to bind directly to IMPα to cause conformational changes that prevent its function in nuclear import of key viral as well as host proteins. Cell culture experiments have shown robust antiviral action towards a whole range of viruses, including HIV-1, dengue, Zika and West Nile Virus, Venezuelan equine encephalitis virus, Chikungunya, pseudorabies virus, adenovirus, and SARS-CoV-2 (COVID-19). Close to 70 clinical trials are currently in progress worldwide for SARS-CoV-2. Although few of these studies have been completed, the results that are available, as well as those from observational/retrospective studies, indicate clinical benefit. Here we discuss the case for ivermectin as a host-directed broad-spectrum antiviral agent, including for SARS-CoV-2.
    MeSH term(s) Antiparasitic Agents/pharmacology ; Antiparasitic Agents/therapeutic use ; Antiviral Agents/pharmacology ; Antiviral Agents/therapeutic use ; COVID-19/drug therapy ; Humans ; Ivermectin/pharmacology ; Ivermectin/therapeutic use ; SARS-CoV-2/drug effects ; alpha Karyopherins/antagonists & inhibitors
    Chemical Substances Antiparasitic Agents ; Antiviral Agents ; alpha Karyopherins ; Ivermectin (70288-86-7)
    Language English
    Publishing date 2020-10-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 205723-2
    ISSN 1090-2104 ; 0006-291X ; 0006-291X
    ISSN (online) 1090-2104 ; 0006-291X
    ISSN 0006-291X
    DOI 10.1016/j.bbrc.2020.10.042
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Book: The mobile receptor hypothesis

    Jans, David A.

    the role of membrane receptor lateral movement in signal transduction

    (Molecular biology intelligence unit)

    1997  

    Author's details David A. Jans
    Series title Molecular biology intelligence unit
    Keywords Cell Membrane / metabolism ; Membrane Proteins / metabolism ; Signal Transduction / physiology ; Signaltransduktion ; Membranrezeptor ; Motilität
    Subject Bewegungsfähigkeit ; Beweglichkeit ; Motility ; Signalübertragung ; Signalvermittlung
    Language English
    Size 224 S. : Ill., graph. Darst.
    Publisher Springer u.a.
    Publishing place New York u.a.
    Publishing country United States
    Document type Book
    Note Literaturangaben
    HBZ-ID HT008081834
    ISBN 3-540-62732-4 ; 978-3-540-62732-6
    Database Catalogue ZB MED Medicine, Health

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  10. Article ; Online: Transcriptomic profile dataset of embryonic stem cells (Wild-type and IPO13-Knock Out) with and without oxidative stress.

    Gajewska, Katarzyna A / Ramialison, Mirana / Wagstaff, Kylie M / Jans, David A

    Data in brief

    2022  Volume 42, Page(s) 108099

    Abstract: The transcriptional response to cellular stress relies upon trafficking of regulators of transcription between the nuclear and cytoplasmic compartments, which occurs through action of members of the importin (IPO) superfamily. As a result of stresses ... ...

    Abstract The transcriptional response to cellular stress relies upon trafficking of regulators of transcription between the nuclear and cytoplasmic compartments, which occurs through action of members of the importin (IPO) superfamily. As a result of stresses such as oxidative or osmotic stress, one consequence is that importins become mislocalised, leading to inhibition of conventional nuclear transport. Here, we examine IPO13, which has a number of nonconventional characteristics, in the context of cell stress. We used Next Generation RNA Sequencing using the Illumina platform to compare the transcriptomes of Wild-type (WT) and IPO13-Knockout (KO) mouse embryonic stem cells in the absence and presence of oxidative stress. Differences in the mRNA expression profiles were observed between the cell lines in the absence and in the presence of stress. This data will be a key resource to enable characterization of the contribution of nuclear transporter IPO13 to cellular transcription in the absence and presence of oxidative stress, as well as more broadly, in the study of stem cell biology and effect of stress on embryonic stem cell transcription.
    Language English
    Publishing date 2022-03-28
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2786545-9
    ISSN 2352-3409 ; 2352-3409
    ISSN (online) 2352-3409
    ISSN 2352-3409
    DOI 10.1016/j.dib.2022.108099
    Database MEDical Literature Analysis and Retrieval System OnLINE

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