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[The role of SRC kinase in activation of transcription factor STAT1].

Transcription factor STAT1 (Signal Transducers and Activators of Transcription) takes part in signal transduction from receptors of growth factors and many cytokines, including interferons. In this paper, the role of tyrosinkinases Src and JAK2 was estimated in activation of STAT1 by epidermal growth factor (EGF) and hyperosmotic shock. Using a pharmacological inhibitor of Src kinases CGP77675 and cells with knockout c-src, it was shown that Src activated STAT1 upon stimulation by both epidermal growth factor and hypersomatic shock. In contrast, JAK2 activity exerted no influence on these processes.