Article
Association of asthma severity and bronchial hyperresponsiveness with a polymorphism in the cytotoxic T-lymphocyte antigen-4 gene.
Chest - 1 Jul 2002
Lee Sang Yeub, Lee Young Ho, Shin Chol, Shim Jae Jeong, Kang Kyung Ho, Yoo Se Hwa, In Kwang Ho
Abstract excerpt
OBJECTIVES: Cytotoxic T-lymphocyte antigen (CTLA)-4 is a homolog of CD28, which is expressed only on activated T cells. It binds to accessory molecule B7 and mediates T-cell-dependent immune response. Signaling through CTLA-4 may down-regulate type 1 T-helper cell proliferation; moreover, some studies suggest that CTLA-4 might also deliver a positive signal to type 2 T-helper cell activation. Disruption of this...
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