The Journal of Experimental Medicine
VeriKine-HS Human IFN-Beta
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Published online 16 July 2001. doi:10.1084/jem.194.2.165
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© The Rockefeller University Press, 0022-1007/2001/7/165/ $5.00
The Journal of Experimental Medicine, Volume 194, Number 2, July 16, 2001 165-172


Original Article

Interferon {gamma} Stabilizes the T Helper Cell Type 1 Phenotype

Yongkang Zhanga, Ron Apiladoa, John Colemana, Shlomo Ben-Sassonb,c, Sharon Tsangb, Jane Hu-Lib, William E. Paulb, and Hua Huanga
a The Department of Cell Biology, Neurobiology, and Anatomy, Loyola University Chicago, Stritch School of Medicine, Maywood, IL 60153
b The Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
c The Lautenberg Center for General and Tumor Immunology, The Hebrew University School of Medicine, Jerusalem 91120, Israel

Correspondence to: Hua Huang, Dept. of Cell Biology, Neurobiology, and Anatomy, Loyola University Chicago, Stritch School of Medicine, Bldg. 102, Rm. 5657, 2160 South First Ave., Maywood, IL 60153. Tel:708-216-3349 Fax:708-216-3913 E-mail:hhuang{at}lumc.edu.

T helper cell (Th)1-primed CD4 T cells from wild-type donors make little interleukin (IL)-4 when restimulated under Th2 conditions. However, such restimulation of Th1-primed cells from interferon (IFN)-{gamma}2/- or IFN-{gamma} receptor (IFN-{gamma}R)-/- mice resulted in substantial production of IL-4 and other Th2 cytokines. Adding IFN-{gamma} to the priming culture markedly diminished the capacity of Th1-primed IFN-{gamma}2/- cells to express IL-4. Even IFN-{gamma}–producing cells from IFN-{gamma}R-/- mice could acquire IL-4–producing capacity. Thus, IFN-{gamma} is not required for the development of IFN-{gamma}–producing capacity, but it plays a critical role in suppressing the IL-4–producing potential of Th1 cells.

Key Words: IL-4, IL-12, differentiation, commitment, cell cloning


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