Portal de Periódicos da CAPES

An Enhanced Immune Response in Mice Lacking the Transcription Factor NFAT1

1996; American Association for the Advancement of Science; Volume: 272; Issue: 5263 Linguagem: Inglês

10.1126/science.272.5263.892

1095-9203

Steven Xanthoudakis, João P. B. Viola, Karen T. Y. Shaw, Chun Huai Luo, J. Wallace, Patrı́cia T. Bozza, Daniel Luk, Tom Curran, Anjana Rao,

Signaling Pathways in Disease

Transcription factors of the NFAT family are thought to play a major role in regulating the expression of cytokine genes and other inducible genes during the immune response. The role of NFAT1 was investigated by targeted disruption of the NFAT1 gene. Unexpectedly, cells from NFAT1 −/− mice showed increased primary responses to Leishmania major and mounted increased secondary responses to ovalbumin in vitro. In an in vivo model of allergic inflammation, the accumulation of eosinophils and levels of serum immunoglobulin E were increased in NFAT1 −/− mice. These results suggest that NFAT1 exerts a negative regulatory influence on the immune response.