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  1. Article ; Online: ITK inhibitors in inflammation and immune-mediated disorders.

    Sahu, Nisebita / August, Avery

    Current topics in medicinal chemistry

    2009  Volume 9, Issue 8, Page(s) 690–703

    Abstract: Interleukin-2-inducible T cell kinase (ITK) is a non-receptor tyrosine kinase expressed in T cells, NKT cells and mast cells which plays a crucial role in regulating the T cell receptor (TCR), CD28, CD2, chemokine receptor CXCR4, and FcepsilonR-mediated ... ...

    Abstract Interleukin-2-inducible T cell kinase (ITK) is a non-receptor tyrosine kinase expressed in T cells, NKT cells and mast cells which plays a crucial role in regulating the T cell receptor (TCR), CD28, CD2, chemokine receptor CXCR4, and FcepsilonR-mediated signaling pathways. In T cells, ITK is an important mediator for actin reorganization, activation of PLCgamma, mobilization of calcium, and activation of the NFAT transcription factor. ITK plays an important role in the secretion of IL-2, but more critically, also has a pivotal role in the secretion of Th2 cytokines, IL-4, IL-5 and IL-13. As such, ITK has been shown to regulate the development of effective Th2 response during allergic asthma as well as infections of parasitic worms. This ability of ITK to regulate Th2 responses, along with its pattern of expression, has led to the proposal that it would represent an excellent target for Th2-mediated inflammation. We discuss here the possibilities and pitfalls of targeting ITK for inflammatory disorders.
    MeSH term(s) Animals ; Anti-Inflammatory Agents/pharmacology ; Anti-Inflammatory Agents/therapeutic use ; Cell Differentiation/drug effects ; Humans ; Inflammation/drug therapy ; Inflammation/pathology ; Protein Kinase Inhibitors/pharmacology ; Protein Kinase Inhibitors/therapeutic use ; Protein-Tyrosine Kinases/antagonists & inhibitors ; Protein-Tyrosine Kinases/chemistry ; Signal Transduction/drug effects ; T-Lymphocytes/drug effects
    Chemical Substances Anti-Inflammatory Agents ; Protein Kinase Inhibitors ; Protein-Tyrosine Kinases (EC 2.7.10.1) ; emt protein-tyrosine kinase (EC 2.7.10.2)
    Language English
    Publishing date 2009-08-18
    Publishing country United Arab Emirates
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2064823-6
    ISSN 1873-4294 ; 1568-0266
    ISSN (online) 1873-4294
    ISSN 1568-0266
    DOI 10.2174/156802609789044443
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Functional screening implicates miR-371-3p and peroxiredoxin 6 in reversible tolerance to cancer drugs

    Nisebita Sahu / Jean-Philippe Stephan / Darlene Dela Cruz / Mark Merchant / Benjamin Haley / Richard Bourgon / Marie Classon / Jeff Settleman

    Nature Communications, Vol 7, Iss 1, Pp 1-

    2016  Volume 10

    Abstract: Acquired resistance significantly limits the efficacy of cancer drug therapies. Here, the authors identify miR-371-3p as a suppressor of drug tolerance in cancer cell lines by its target gene PRDX6, which in turn regulates PLA2/PKCα signalling and ROS ... ...

    Abstract Acquired resistance significantly limits the efficacy of cancer drug therapies. Here, the authors identify miR-371-3p as a suppressor of drug tolerance in cancer cell lines by its target gene PRDX6, which in turn regulates PLA2/PKCα signalling and ROS levels.
    Keywords Science ; Q
    Language English
    Publishing date 2016-08-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Cotargeting of MEK and PDGFR/STAT3 Pathways to Treat Pancreatic Ductal Adenocarcinoma.

    Sahu, Nisebita / Chan, Emily / Chu, Felix / Pham, Thinh / Koeppen, Hartmut / Forrest, William / Merchant, Mark / Settleman, Jeff

    Molecular cancer therapeutics

    2017  Volume 16, Issue 9, Page(s) 1729–1738

    Abstract: Pancreatic ductal adenocarcinoma (PDAC) is among the most lethal human diseases and remains largely refractory to available drug treatments. Insufficient targeting of the known oncogenic drivers and activation of compensatory feedback loops and inability ...

    Abstract Pancreatic ductal adenocarcinoma (PDAC) is among the most lethal human diseases and remains largely refractory to available drug treatments. Insufficient targeting of the known oncogenic drivers and activation of compensatory feedback loops and inability to prevent metastatic spread contribute to poor prognosis for this disease. The
    MeSH term(s) Animals ; Antineoplastic Agents/pharmacology ; Antineoplastic Agents/therapeutic use ; Apoptosis ; Carcinoma, Pancreatic Ductal/drug therapy ; Carcinoma, Pancreatic Ductal/genetics ; Carcinoma, Pancreatic Ductal/metabolism ; Carcinoma, Pancreatic Ductal/pathology ; Cell Line, Tumor ; Disease Models, Animal ; Drug Synergism ; Female ; Gene Knockdown Techniques ; Humans ; MAP Kinase Signaling System/drug effects ; Mice ; Molecular Targeted Therapy ; Pancreatic Neoplasms/drug therapy ; Pancreatic Neoplasms/genetics ; Pancreatic Neoplasms/metabolism ; Pancreatic Neoplasms/pathology ; Protein Kinase Inhibitors/pharmacology ; Protein Kinase Inhibitors/therapeutic use ; RNA Interference ; Receptors, Platelet-Derived Growth Factor/metabolism ; STAT3 Transcription Factor/genetics ; STAT3 Transcription Factor/metabolism ; Signal Transduction/drug effects ; Spheroids, Cellular ; Tumor Cells, Cultured ; Xenograft Model Antitumor Assays
    Chemical Substances Antineoplastic Agents ; Protein Kinase Inhibitors ; STAT3 Transcription Factor ; Receptors, Platelet-Derived Growth Factor (EC 2.7.10.1)
    Language English
    Publishing date 2017-06-15
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2063563-1
    ISSN 1538-8514 ; 1535-7163
    ISSN (online) 1538-8514
    ISSN 1535-7163
    DOI 10.1158/1535-7163.MCT-17-0009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Functional screening implicates miR-371-3p and peroxiredoxin 6 in reversible tolerance to cancer drugs.

    Sahu, Nisebita / Stephan, Jean-Philippe / Cruz, Darlene Dela / Merchant, Mark / Haley, Benjamin / Bourgon, Richard / Classon, Marie / Settleman, Jeff

    Nature communications

    2016  Volume 7, Page(s) 12351

    Abstract: Acquired resistance to cancer drug therapies almost always occurs in advanced-stage patients even following a significant response to treatment. In addition to mutational mechanisms, various non-mutational resistance mechanisms have now been recognized. ... ...

    Abstract Acquired resistance to cancer drug therapies almost always occurs in advanced-stage patients even following a significant response to treatment. In addition to mutational mechanisms, various non-mutational resistance mechanisms have now been recognized. We previously described a chromatin-mediated subpopulation of reversibly drug-tolerant persisters that is dynamically maintained within a wide variety of tumour cell populations. Here we explore a potential role for microRNAs in such transient drug tolerance. Functional screening of 879 human microRNAs reveals miR-371-3p as a potent suppressor of drug tolerance. We identify PRDX6 (peroxiredoxin 6) as a key target of miR-371-3p in establishing drug tolerance by regulating PLA2/PKCα activity and reactive oxygen species. PRDX6 expression is associated with poor prognosis in cancers of multiple tissue origins. These findings implicate miR-371-3p as a suppressor of PRDX6 and suggest that co-targeting of peroxiredoxin 6 or modulating miR-371-3p expression together with targeted cancer therapies may delay or prevent acquired drug resistance.
    MeSH term(s) Antineoplastic Agents/pharmacology ; Base Sequence ; Cell Line, Tumor ; Down-Regulation/drug effects ; Drug Resistance, Neoplasm/drug effects ; Humans ; MicroRNAs/genetics ; MicroRNAs/metabolism ; Peroxiredoxin VI/metabolism ; Phospholipase C beta/metabolism ; Phospholipases A2/metabolism ; Protein Kinase C-alpha/metabolism
    Chemical Substances Antineoplastic Agents ; MIRN371 microRNA, human ; MicroRNAs ; Peroxiredoxin VI (EC 1.11.1.15) ; Protein Kinase C-alpha (EC 2.7.11.13) ; Phospholipases A2 (EC 3.1.1.4) ; Phospholipase C beta (EC 3.1.4.11)
    Language English
    Publishing date 2016-08-03
    Publishing country England
    Document type Journal Article
    ISSN 2041-1723
    ISSN (online) 2041-1723
    DOI 10.1038/ncomms12351
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: IL-2-inducible T-cell kinase modulates TH2-mediated allergic airway inflammation by suppressing IFN-γ in naive CD4+ T cells.

    Kannan, Arun K / Sahu, Nisebita / Mohanan, Sunish / Mohinta, Sonia / August, Avery

    The Journal of allergy and clinical immunology

    2013  Volume 132, Issue 4, Page(s) 811–20.e1–5

    Abstract: Background: Asthma is a predominantly TH2 cell-dominated inflammatory disease characterized by airway inflammation and a major public health concern affecting millions of persons. The Tec family tyrosine kinase IL-2-inducible T-cell kinase (Itk) is ... ...

    Abstract Background: Asthma is a predominantly TH2 cell-dominated inflammatory disease characterized by airway inflammation and a major public health concern affecting millions of persons. The Tec family tyrosine kinase IL-2-inducible T-cell kinase (Itk) is primarily expressed in T cells and critical for the function and differentiation of TH cells. Itk(-/-) mice have a defective TH2 response and are not susceptible to allergic asthma.
    Objective: We sought to better understand the role of Itk signaling in TH differentiation programs and in the development and molecular pathology of allergic asthma.
    Methods: Using a murine model of allergic airway inflammation, we dissected the role of Itk in regulating TH cell differentiation through genetic ablation of critical genes, chromatin immunoprecipitation assays, and house dust mite-driven allergic airway inflammation.
    Results: Peripheral naive Itk(-/-) CD4(+) T cells have substantially increased transcripts and expression of the prototypic TH1 genes Eomesodermin, IFN-γ, T-box transcription factor (T-bet), and IL-12Rβ1. Removal of IFN-γ on the Itk(-/-) background rescues expression of TH2-related genes in TH cells and allergic airway inflammation in Itk(-/-) mice. Furthermore, small hairpin RNA-mediated knockdown of Itk in human peripheral blood T cells results in increased expression of mRNA for IFN-γ and T-bet and reduction in expression of IL-4.
    Conclusion: Our results indicate that Itk signals suppress the expression of IFN-γ in naive CD4(+) T cells, which in a positive feed-forward loop regulates the expression of TH1 factors, such as T-bet and Eomesodermin, and suppress development of TH2 cells and allergic airway inflammation.
    MeSH term(s) Animals ; Asthma/etiology ; Asthma/immunology ; CD4-Positive T-Lymphocytes/cytology ; CD4-Positive T-Lymphocytes/immunology ; CD4-Positive T-Lymphocytes/metabolism ; Cell Differentiation ; Chromatin Immunoprecipitation ; Female ; Humans ; Hypersensitivity/etiology ; Hypersensitivity/immunology ; Inflammation/etiology ; Inflammation/immunology ; Interferon-gamma/drug effects ; Interferon-gamma/metabolism ; Male ; Mice ; Protein-Tyrosine Kinases/immunology ; Protein-Tyrosine Kinases/metabolism ; Pyroglyphidae/immunology ; Th1 Cells/cytology ; Th1 Cells/immunology ; Th2 Cells/cytology ; Th2 Cells/immunology
    Chemical Substances Interferon-gamma (82115-62-6) ; Protein-Tyrosine Kinases (EC 2.7.10.1) ; emt protein-tyrosine kinase (EC 2.7.10.2)
    Language English
    Publishing date 2013-06-12
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 121011-7
    ISSN 1097-6825 ; 1085-8725 ; 0091-6749
    ISSN (online) 1097-6825 ; 1085-8725
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2013.04.033
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Modeling susceptibility versus resistance in allergic airway disease reveals regulation by Tec kinase Itk.

    Nisebita Sahu / J Luis Morales / Deborah Fowell / Avery August

    PLoS ONE, Vol 5, Iss 6, p e

    2010  Volume 11348

    Abstract: Murine models of allergic asthma have been used to understand the mechanisms of development and pathology in this disease. In addition, knockout mice have contributed significantly to our understanding of the roles of specific molecules and cytokines in ... ...

    Abstract Murine models of allergic asthma have been used to understand the mechanisms of development and pathology in this disease. In addition, knockout mice have contributed significantly to our understanding of the roles of specific molecules and cytokines in these models. However, results can vary significantly depending on the mouse strain used in the model, and in particularly in understanding the effect of specific knockouts. For example, it can be equivocal as to whether specific gene knockouts affect the susceptibility of the mice to developing the disease, or lead to resistance. Here we used a house dust mite model of allergic airway inflammation to examine the response of two strains of mice (C57BL/6 and BALB/c) which differ in their responses in allergic airway inflammation. We demonstrate an algorithm that can facilitate the understanding of the behavior of these models with regards to susceptibility (to allergic airway inflammation) (S(aai)) or resistance (R(aai)) in this model. We verify that both C57BL/6 and BALB/c develop disease, but BALB/c mice have higher S(aai) for development. We then use this approach to show that the absence of the Tec family kinase Itk, which regulates the production of Th2 cytokines, leads to R(aai) in the C57BL/6 background, but decreases S(aai) on the BALB/c background. We suggest that the use of such approaches could clarify the behavior of various knockout mice in modeling allergic asthma.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610
    Language English
    Publishing date 2010-06-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Modeling susceptibility versus resistance in allergic airway disease reveals regulation by Tec kinase Itk.

    Sahu, Nisebita / Morales, J Luis / Fowell, Deborah / August, Avery

    PloS one

    2010  Volume 5, Issue 6, Page(s) e11348

    Abstract: Murine models of allergic asthma have been used to understand the mechanisms of development and pathology in this disease. In addition, knockout mice have contributed significantly to our understanding of the roles of specific molecules and cytokines in ... ...

    Abstract Murine models of allergic asthma have been used to understand the mechanisms of development and pathology in this disease. In addition, knockout mice have contributed significantly to our understanding of the roles of specific molecules and cytokines in these models. However, results can vary significantly depending on the mouse strain used in the model, and in particularly in understanding the effect of specific knockouts. For example, it can be equivocal as to whether specific gene knockouts affect the susceptibility of the mice to developing the disease, or lead to resistance. Here we used a house dust mite model of allergic airway inflammation to examine the response of two strains of mice (C57BL/6 and BALB/c) which differ in their responses in allergic airway inflammation. We demonstrate an algorithm that can facilitate the understanding of the behavior of these models with regards to susceptibility (to allergic airway inflammation) (S(aai)) or resistance (R(aai)) in this model. We verify that both C57BL/6 and BALB/c develop disease, but BALB/c mice have higher S(aai) for development. We then use this approach to show that the absence of the Tec family kinase Itk, which regulates the production of Th2 cytokines, leads to R(aai) in the C57BL/6 background, but decreases S(aai) on the BALB/c background. We suggest that the use of such approaches could clarify the behavior of various knockout mice in modeling allergic asthma.
    MeSH term(s) Algorithms ; Animals ; Bronchial Hyperreactivity ; Disease Susceptibility ; Hypersensitivity/enzymology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Knockout ; Protein-Tyrosine Kinases/metabolism
    Chemical Substances Tec protein-tyrosine kinase (EC 2.7.1.-) ; Protein-Tyrosine Kinases (EC 2.7.10.1)
    Language English
    Publishing date 2010-06-28
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ISSN 1932-6203
    ISSN (online) 1932-6203
    DOI 10.1371/journal.pone.0011348
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Differential sensitivity to Itk kinase signals for T helper 2 cytokine production and chemokine-mediated migration.

    Sahu, Nisebita / Mueller, Cynthia / Fischer, Angela / August, Avery

    Journal of immunology (Baltimore, Md. : 1950)

    2008  Volume 180, Issue 6, Page(s) 3833–3838

    Abstract: Allergic asthma is dependent on chemokine-mediated Th2 cell migration and Th2 cytokine secretion into the lungs. The inducible T cell tyrosine kinase Itk regulates the production of Th2 cytokines as well as migration in response to chemokine gradients. ... ...

    Abstract Allergic asthma is dependent on chemokine-mediated Th2 cell migration and Th2 cytokine secretion into the lungs. The inducible T cell tyrosine kinase Itk regulates the production of Th2 cytokines as well as migration in response to chemokine gradients. Mice lacking Itk are resistant to developing allergic asthma. However, the role of kinase activity of Itk in the development of this disease is unclear. In addition, whether distinct Itk-derived signals lead to T cell migration and secretion of Th2 cytokines is also unknown. Using transgenic mice specifically lacking Itk kinase activity, we show that active kinase signaling is required for control of Th2 responses and development of allergic asthma. Moreover, dominant suppression of kinase Itk activity led to normal Th2 responses, but significantly reduced chemokine-mediated migration, resulting in prevention of allergic asthma. These observations indicate that signals required for Th2 responses and migration are differentially sensitive to Itk activity. Manipulation of Itk's activity can thus provide a new strategy to treat allergic asthma by differentially affecting migration of T cells into the lungs, leaving Th2 responses intact.
    MeSH term(s) Allergens/administration & dosage ; Animals ; Asthma/enzymology ; Asthma/immunology ; Asthma/pathology ; Bronchial Hyperreactivity/enzymology ; Bronchial Hyperreactivity/immunology ; Bronchial Hyperreactivity/pathology ; Chemokines/physiology ; Chemotaxis, Leukocyte/genetics ; Chemotaxis, Leukocyte/immunology ; Cytokines/biosynthesis ; Inflammation Mediators/physiology ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mice, Transgenic ; Ovalbumin/administration & dosage ; Ovalbumin/immunology ; Protein Structure, Tertiary/genetics ; Protein Structure, Tertiary/physiology ; Protein-Tyrosine Kinases/deficiency ; Protein-Tyrosine Kinases/genetics ; Protein-Tyrosine Kinases/physiology ; Signal Transduction/genetics ; Signal Transduction/immunology ; Th2 Cells/enzymology ; Th2 Cells/immunology ; Th2 Cells/metabolism ; Th2 Cells/pathology
    Chemical Substances Allergens ; Chemokines ; Cytokines ; Inflammation Mediators ; Ovalbumin (9006-59-1) ; Protein-Tyrosine Kinases (EC 2.7.10.1) ; emt protein-tyrosine kinase (EC 2.7.10.2)
    Language English
    Publishing date 2008-03-05
    Publishing country United States
    Document type Comparative Study ; Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.180.6.3833
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: IL-2–inducible T-cell kinase modulates TH2-mediated allergic airway inflammation by suppressing IFN-γ in naive CD4+ T cells

    Kannan, Arun K / Sahu, Nisebita / Mohanan, Sunish / Mohinta, Sonia / August, Avery

    The Journal of Allergy and Clinical Immunology. 2013 Oct., v. 132, no. 4

    2013  

    Abstract: BACKGROUND: Asthma is a predominantly TH2 cell–dominated inflammatory disease characterized by airway inflammation and a major public health concern affecting millions of persons. The Tec family tyrosine kinase IL-2–inducible T-cell kinase (Itk) is ... ...

    Abstract BACKGROUND: Asthma is a predominantly TH2 cell–dominated inflammatory disease characterized by airway inflammation and a major public health concern affecting millions of persons. The Tec family tyrosine kinase IL-2–inducible T-cell kinase (Itk) is primarily expressed in T cells and critical for the function and differentiation of TH cells. Itk−/− mice have a defective TH2 response and are not susceptible to allergic asthma. OBJECTIVE: We sought to better understand the role of Itk signaling in TH differentiation programs and in the development and molecular pathology of allergic asthma. METHODS: Using a murine model of allergic airway inflammation, we dissected the role of Itk in regulating TH cell differentiation through genetic ablation of critical genes, chromatin immunoprecipitation assays, and house dust mite–driven allergic airway inflammation. RESULTS: Peripheral naive Itk−/− CD4+ T cells have substantially increased transcripts and expression of the prototypic TH1 genes Eomesodermin, IFN-γ, T-box transcription factor (T-bet), and IL-12Rβ1. Removal of IFN-γ on the Itk−/− background rescues expression of TH2-related genes in TH cells and allergic airway inflammation in Itk−/− mice. Furthermore, small hairpin RNA–mediated knockdown of Itk in human peripheral blood T cells results in increased expression of mRNA for IFN-γ and T-bet and reduction in expression of IL-4. CONCLUSION: Our results indicate that Itk signals suppress the expression of IFN-γ in naive CD4+ T cells, which in a positive feed-forward loop regulates the expression of TH1 factors, such as T-bet and Eomesodermin, and suppress development of TH2 cells and allergic airway inflammation.
    Keywords CD4-positive T-lymphocytes ; animal models ; asthma ; cell differentiation ; chromatin ; dust ; gene expression ; genes ; humans ; inflammation ; interferon-gamma ; interleukin-4 ; messenger RNA ; mice ; people ; precipitin tests ; public health ; transcription factors ; tyrosine
    Language English
    Dates of publication 2013-10
    Size p. 811-820.e5.
    Publishing place Mosby, Inc.
    Document type Article
    ZDB-ID 121011-7
    ISSN 1085-8725 ; 1097-6825 ; 0091-6749
    ISSN (online) 1085-8725 ; 1097-6825
    ISSN 0091-6749
    DOI 10.1016/j.jaci.2013.04.033
    Database NAL-Catalogue (AGRICOLA)

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  10. Article: Memory phenotype CD8+ T cells with innate function selectively develop in the absence of active Itk.

    Hu, Jianfang / Sahu, Nisebita / Walsh, Elizabeth / August, Avery

    European journal of immunology

    2007  Volume 37, Issue 10, Page(s) 2892–2899

    Abstract: T cells with a memory-like phenotype and possessing innate immune function have been previously identified as CD8(+)CD44(hi) cells. These cells rapidly secrete IFN-gamma upon stimulation with IL-12/IL-18 and are involved in innate responses to infection ... ...

    Abstract T cells with a memory-like phenotype and possessing innate immune function have been previously identified as CD8(+)CD44(hi) cells. These cells rapidly secrete IFN-gamma upon stimulation with IL-12/IL-18 and are involved in innate responses to infection with Listeria monocytogenes. The signals regulating these cells are unclear. The Tec kinase Itk regulates T cell activation and we report here that a majority of the CD8(+) T cells in Itk null mice have a phenotype of CD44(hi) similar to memory-like innate T cells. These cells are observed in mice carrying an Itk mutant lacking the kinase domain, indicating that active Tec kinase signaling suppresses their presence. These cells carry preformed message for and are able to rapidly produce IFN-gamma upon stimulation in vitro with IL-12/IL-18, and endow Itk null mice the ability to effectively respond to infection with L. monocytogenes or exposure to lipopolysaccharides by secretion of IFN-gamma. Transfer of these cells rescues the ability of IFN-gamma null mice to reduce bacterial burden following L. monocytogenes infection, indicating that these cells are functional CD8(+)CD44(hi) T cells previously detected in vivo. These results indicate that active signals from Tec kinases regulate the development of memory-like CD8(+) T cells with innate function.
    MeSH term(s) Animals ; CD8-Positive T-Lymphocytes/cytology ; CD8-Positive T-Lymphocytes/enzymology ; CD8-Positive T-Lymphocytes/immunology ; CD8-Positive T-Lymphocytes/microbiology ; Cell Differentiation/genetics ; Cell Differentiation/immunology ; Immunity, Innate/genetics ; Immunologic Memory/genetics ; Immunophenotyping ; Interferon-gamma/biosynthesis ; Interferon-gamma/deficiency ; Interferon-gamma/genetics ; Listeriosis/enzymology ; Listeriosis/genetics ; Listeriosis/immunology ; Listeriosis/prevention & control ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mice, Transgenic ; Protein-Tyrosine Kinases/deficiency ; Protein-Tyrosine Kinases/genetics ; Protein-Tyrosine Kinases/physiology ; RNA, Messenger/biosynthesis ; Signal Transduction/genetics ; Signal Transduction/immunology
    Chemical Substances RNA, Messenger ; Interferon-gamma (82115-62-6) ; Protein-Tyrosine Kinases (EC 2.7.10.1) ; emt protein-tyrosine kinase (EC 2.7.10.2)
    Language English
    Publishing date 2007-07-27
    Publishing country Germany
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 120108-6
    ISSN 1521-4141 ; 0014-2980
    ISSN (online) 1521-4141
    ISSN 0014-2980
    DOI 10.1002/eji.200737311
    Database MEDical Literature Analysis and Retrieval System OnLINE

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