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J. Exp. Med.,
Volume 188, Number 10, November 16, 1998 1803-1816
Chain (IL-2R
)/IL-4R
Cytokine Receptor
Chimera Potentiates Allergic Airway Disease
By
§

From the * Department of Microbiology and Immunology, the Strength of T cell receptor (TCR) signaling, coreceptors, costimulation, antigen-presenting
cell type, and cytokines all play crucial roles in determining the efficiency with which type 2 T
lymphocytes (Th2, Tc2) develop from uncommitted precursors. To investigate in vivo regulatory mechanisms that control the population of type 2 T cells and disease susceptibility, we
have created lines of transgenic mice in which expression of a chimeric cytokine receptor (the
mouse interleukin 2 receptor
Department of Cell Biology, and the § Rheumatology Division and
Pulmonary Division, Department of Medicine, Vanderbilt University
Medical School, Nashville, Tennessee 37232
chain [IL-2R
] extracellular domain fused to the cytoplasmic
tail of IL-4R
) is targeted to the T lymphoid lineage using the proximal lck promoter. This
chimera transduced IL-4-specific signals in response to IL-2 binding and dramatically enhanced
type 2 responses (IL-4, IL-5, and immunoglobulin E production) upon in vitro TCR stimulation or in vivo antigen challenge. Thus, type 2 effector function was augmented by IL-4 signals
transduced through a chimeric receptor expressed in a T cell-specific manner. This influence
was sufficient for establishment of antigen-induced allergic airway hyperresponsiveness on a
disease-resistant background (C57BL/6).
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