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Review
. 1995:64:621-51.
doi: 10.1146/annurev.bi.64.070195.003201.

Transcriptional responses to polypeptide ligands: the JAK-STAT pathway

C Schindler  1 , J E Darnell Jr
Affiliations
Review

Transcriptional responses to polypeptide ligands: the JAK-STAT pathway

C Schindler et al. Annu Rev Biochem. 1995.

Abstract

Cytokines and growth factors regulate multiple aspects of cell growth through their interactions with specific receptors. These receptors initiate signals directed at both the cytoplasmic and the nuclear compartments. Many of the nuclear signals culminate in the induction of new genes. Characterization of the ability of IFN-alpha to rapidly induce new genes has led to the identification of a new signaling paradigm, the JAK-STAT (Signal Transducers and Activators of Transcription) pathway. In the IFN-alpha pathway, two receptor associated tyrosine kinases from the JAK family, Jak1 and Tyk2, mediate the activation of two latent cytoplasmic transcription factors, Stat1 and Stat2. More recent studies have not only determined that this pathway is used extensively, but have led to the identification of additional components (e.g., Jak2, Jak3, Stat3, Stat4, Stat5, and Stat6). This review will examine how these components mediate the transduction of signal directly from receptor to nucleus.

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