A Specific Epitope of Protein Inhibitor of Activated STAT3 Is Responsible for the Induction of Apoptosis in Rat Transformed Mast Cells | Zendy

Zohar Yagil | Zendy; Gillian Kay | Zendy; Hovav Nechushtan | Zendy; Ehud Razin | Zendy

Open Access

A Specific Epitope of Protein Inhibitor of Activated STAT3 Is Responsible for the Induction of Apoptosis in Rat Transformed Mast Cells

Author(s) -

Zohar Yagil,

Gillian Kay,

Hovav Nechushtan,

Ehud Razin

Publication year - 2009

Publication title -

the journal of immunology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.737

H-Index - 372

eISSN - 1550-6606

pISSN - 0022-1767

DOI - 10.4049/jimmunol.0803030

Subject(s) - microphthalmia associated transcription factor , stat3 , microbiology and biotechnology , apoptosis , transcription factor , transcription (linguistics) , biology , chemistry , cancer research , signal transduction , gene , biochemistry , linguistics , philosophy

Protein inhibitor of activated STAT3 (PIAS3) functions in vivo as a key molecule in suppressing the transcriptional activity of both microphthalmia transcription factor (MITF) and STAT3, two transcription factors that play a major role in the development, phenotypic expression, and survival of mast cells and melanocytes. In the present study we have investigated the role played by PIAS3 in the regulation of cell cycle in mast cells and melanocytes. We have characterized the biological role of a 23-aa domain derived from PIAS3 that induces apoptosis in these cells by inhibiting the transcriptional activity of both MITF and STAT3. This PIAS3 inhibitor peptide could serve as the beginning of an in depth study for the development of peptide inhibitors for MITF and STAT3.

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