STAT6 protein is a transcription factor activated by cytokines, particularly interleukin 4 and IL 13. (STAT6-/-) were found to be deficient in IL 4 mediated functions including Th2 helper T cell differentiation, expression of cell surface markers, T cell proliferation, immunoglobulin class switching to IgE, and partial loss of IL 4 mediated proliferation. STAT6 mRNA has been detected in peripheral bloodlymphocytes, colon, intestine, ovary, prostate,thymus, spleen, kidney, liver, lung and placenta. STAT6 is critically involved in Th2 immune response.

Immunocytochemistry

Immunocytochemistry analysis of STAT6 in Hela cells using STAT6 antibody (green),and DAPI(blue). Red: Actin filaments have been labeled with Alexa Fluor- 555 phalloidin.