Genetic evidence linking SAP, the X-linked lymphoproliferative gene product, to Src-related kinase FynT in TH2 cytokine regulation

Dominique Davidson, Xiaochu Shi, Shaohua Zhang, Hao Wang, Mona Nemer, Nobuyuki Ono, Shinji Ohno, Yusuke Yanagi, André Veillette

Research output: Contribution to journalArticle

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Abstract

SAP is an adaptor mutated in X-linked lymphoproliferative disease. It plays a critical role in T helper 2 (TH2) cytokine production. This function was suggested to reflect the capacity of SAP to associate with SLAM family receptors and enable tyrosine phosphorylation signaling by these receptors through SAP-mediated recruitment of Src-related kinase FynT. Here, we addressed by genetic means the importance of the SAP-FynT interaction in normal T cell functions. By creating a mouse in which the FynT binding site of SAP was inactivated in the germ line (sapR78A mouse) and by analyzing mice lacking SAP, FynT or SLAM, evidence was obtained that the SAP-FynT cascade is indeed crucial for normal TH2 functions in vitro and in vivo. These data imply that SAP is necessary for TH2 cytokine regulation primarily as a result of its capacity to recruit FynT. They also establish a previously unappreciated role for FynT in SAP-dependent TH2 cytokine regulation.

Original languageEnglish
Pages (from-to)707-717
Number of pages11
JournalImmunity
Volume21
Issue number5
DOIs
Publication statusPublished - Nov 1 2004

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X-Linked Genes
src-Family Kinases
Cytokines
Lymphoproliferative Disorders
Germ Cells
Tyrosine
Binding Sites
Phosphorylation
T-Lymphocytes

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology
  • Infectious Diseases

Cite this

Genetic evidence linking SAP, the X-linked lymphoproliferative gene product, to Src-related kinase FynT in TH2 cytokine regulation. / Davidson, Dominique; Shi, Xiaochu; Zhang, Shaohua; Wang, Hao; Nemer, Mona; Ono, Nobuyuki; Ohno, Shinji; Yanagi, Yusuke; Veillette, André.

In: Immunity, Vol. 21, No. 5, 01.11.2004, p. 707-717.

Research output: Contribution to journalArticle

Davidson, Dominique ; Shi, Xiaochu ; Zhang, Shaohua ; Wang, Hao ; Nemer, Mona ; Ono, Nobuyuki ; Ohno, Shinji ; Yanagi, Yusuke ; Veillette, André. / Genetic evidence linking SAP, the X-linked lymphoproliferative gene product, to Src-related kinase FynT in TH2 cytokine regulation. In: Immunity. 2004 ; Vol. 21, No. 5. pp. 707-717.
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AU - Wang, Hao

AU - Nemer, Mona

AU - Ono, Nobuyuki

AU - Ohno, Shinji

AU - Yanagi, Yusuke

AU - Veillette, André

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