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DOCK8 Drives Src-Dependent NK Cell Effector Function.

Identifieur interne : 004C66 ( Ncbi/Merge ); précédent : 004C65; suivant : 004C67

DOCK8 Drives Src-Dependent NK Cell Effector Function.

Auteurs : Conor J. Kearney [Australie] ; Stephin J. Vervoort [Australie] ; Kelly M. Ramsbottom [Australie] ; Andrew J. Freeman [Australie] ; Jessica Michie [Australie] ; Jane Peake [Australie] ; Jean-Laurent Casanova [France] ; Capucine Picard [France] ; Stuart G. Tangye [Australie] ; Cindy S. Ma [Australie] ; Ricky W. Johnstone [Australie] ; Katrina L. Randall ; Jane Oliaro

Source :

RBID : pubmed:28794229

Abstract

Mutations in the dedicator of cytokinesis 8 (DOCK8) gene cause an autosomal recessive form of hyper-IgE syndrome, characterized by chronic immunodeficiency with persistent microbial infection and increased incidence of malignancy. These manifestations suggest a defect in cytotoxic lymphocyte function and immune surveillance. However, how DOCK8 regulates NK cell-driven immune responses remains unclear. In this article, we demonstrate that DOCK8 regulates NK cell cytotoxicity and cytokine production in response to target cell engagement or receptor ligation. Genetic ablation of DOCK8 in human NK cells attenuated cytokine transcription and secretion through inhibition of Src family kinase activation, particularly Lck, downstream of target cell engagement or NKp30 ligation. PMA/Ionomycin treatment of DOCK8-deficient NK cells rescued cytokine production, indicating a defect proximal to receptor ligation. Importantly, NK cells from DOCK8-deficient patients had attenuated production of IFN-γ and TNF-α upon NKp30 stimulation. Taken together, we reveal a novel molecular mechanism by which DOCK8 regulates NK cell-driven immunity.

DOI: 10.4049/jimmunol.1700751
PubMed: 28794229

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pubmed:28794229

Le document en format XML

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<div type="abstract" xml:lang="en">Mutations in the dedicator of cytokinesis 8 (DOCK8) gene cause an autosomal recessive form of hyper-IgE syndrome, characterized by chronic immunodeficiency with persistent microbial infection and increased incidence of malignancy. These manifestations suggest a defect in cytotoxic lymphocyte function and immune surveillance. However, how DOCK8 regulates NK cell-driven immune responses remains unclear. In this article, we demonstrate that DOCK8 regulates NK cell cytotoxicity and cytokine production in response to target cell engagement or receptor ligation. Genetic ablation of DOCK8 in human NK cells attenuated cytokine transcription and secretion through inhibition of Src family kinase activation, particularly Lck, downstream of target cell engagement or NKp30 ligation. PMA/Ionomycin treatment of DOCK8-deficient NK cells rescued cytokine production, indicating a defect proximal to receptor ligation. Importantly, NK cells from DOCK8-deficient patients had attenuated production of IFN-γ and TNF-α upon NKp30 stimulation. Taken together, we reveal a novel molecular mechanism by which DOCK8 regulates NK cell-driven immunity.</div>
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<AbstractText>Mutations in the dedicator of cytokinesis 8 (DOCK8) gene cause an autosomal recessive form of hyper-IgE syndrome, characterized by chronic immunodeficiency with persistent microbial infection and increased incidence of malignancy. These manifestations suggest a defect in cytotoxic lymphocyte function and immune surveillance. However, how DOCK8 regulates NK cell-driven immune responses remains unclear. In this article, we demonstrate that DOCK8 regulates NK cell cytotoxicity and cytokine production in response to target cell engagement or receptor ligation. Genetic ablation of DOCK8 in human NK cells attenuated cytokine transcription and secretion through inhibition of Src family kinase activation, particularly Lck, downstream of target cell engagement or NKp30 ligation. PMA/Ionomycin treatment of DOCK8-deficient NK cells rescued cytokine production, indicating a defect proximal to receptor ligation. Importantly, NK cells from DOCK8-deficient patients had attenuated production of IFN-γ and TNF-α upon NKp30 stimulation. Taken together, we reveal a novel molecular mechanism by which DOCK8 regulates NK cell-driven immunity.</AbstractText>
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<Affiliation>St. Giles Laboratory of Human Genetics and Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065.</Affiliation>
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<AffiliationInfo>
<Affiliation>Study Center for Primary Immunodeficiencies, Necker Hospital for Sick Children, AP-HP, 75015 Paris, France.</Affiliation>
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<LastName>Tangye</LastName>
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<Identifier Source="ORCID">http://orcid.org/0000-0002-5360-5180</Identifier>
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<Affiliation>Immunology Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales 2010, Australia.</Affiliation>
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<Affiliation>Immunology Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales 2010, Australia.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
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<AffiliationInfo>
<Affiliation>Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia.</Affiliation>
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<LastName>Randall</LastName>
<ForeName>Katrina L</ForeName>
<Initials>KL</Initials>
<Identifier Source="ORCID">http://orcid.org/0000-0001-9708-6020</Identifier>
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<Affiliation>Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, Australian National University, Acton, Australian Capital Territory 2601, Australia; and.</Affiliation>
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<Affiliation>Australian National University Medical School, Australian National University, Acton, Australian Capital Territory 2601, Australia.</Affiliation>
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<Affiliation>Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Victoria 3052, Australia.</Affiliation>
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<li>Australie</li>
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<region>
<li>Victoria (État)</li>
<li>Île-de-France</li>
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<li>Melbourne</li>
<li>Paris</li>
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<name sortKey="Freeman, Andrew J" sort="Freeman, Andrew J" uniqKey="Freeman A" first="Andrew J" last="Freeman">Andrew J. Freeman</name>
<name sortKey="Johnstone, Ricky W" sort="Johnstone, Ricky W" uniqKey="Johnstone R" first="Ricky W" last="Johnstone">Ricky W. Johnstone</name>
<name sortKey="Ma, Cindy S" sort="Ma, Cindy S" uniqKey="Ma C" first="Cindy S" last="Ma">Cindy S. Ma</name>
<name sortKey="Michie, Jessica" sort="Michie, Jessica" uniqKey="Michie J" first="Jessica" last="Michie">Jessica Michie</name>
<name sortKey="Peake, Jane" sort="Peake, Jane" uniqKey="Peake J" first="Jane" last="Peake">Jane Peake</name>
<name sortKey="Ramsbottom, Kelly M" sort="Ramsbottom, Kelly M" uniqKey="Ramsbottom K" first="Kelly M" last="Ramsbottom">Kelly M. Ramsbottom</name>
<name sortKey="Tangye, Stuart G" sort="Tangye, Stuart G" uniqKey="Tangye S" first="Stuart G" last="Tangye">Stuart G. Tangye</name>
<name sortKey="Vervoort, Stephin J" sort="Vervoort, Stephin J" uniqKey="Vervoort S" first="Stephin J" last="Vervoort">Stephin J. Vervoort</name>
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<name sortKey="Casanova, Jean Laurent" sort="Casanova, Jean Laurent" uniqKey="Casanova J" first="Jean-Laurent" last="Casanova">Jean-Laurent Casanova</name>
</region>
<name sortKey="Picard, Capucine" sort="Picard, Capucine" uniqKey="Picard C" first="Capucine" last="Picard">Capucine Picard</name>
</country>
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