First Author | Minamoto S | Year | 1997 |
Journal | Biochem Biophys Res Commun | Volume | 237 |
Issue | 1 | Pages | 79-83 |
PubMed ID | 9266833 | Mgi Jnum | J:42258 |
Mgi Id | MGI:1095452 | Doi | 10.1006/bbrc.1997.7080 |
Citation | Minamoto S, et al. (1997) Cloning and functional analysis of new members of STAT induced STAT inhibitor (SSI) family: SSI-2 and SSI-3. Biochem Biophys Res Commun 237(1):79-83 |
abstractText | Upon the corresponding ligand's stimulation, the cytokine receptors activate several signal pathways: JAK-STAT pathway, Ras-MAP kinase pathway and so on. Recently, we demonstrated that one of the STAT3 (signal transducer and activator of transcription-3) target genes could suppress the function of STAT3 and designated as SSI-1(STAT induced STAT inhibitor-1). SSI-1 is thought to play a critical role in negative feedback control of JAK-STAT signaling pathway. In the present study, we identified two novel human genes which products have homologous region in their SH2 domain and its COOH-terminal region to mouse SSI-1. Northern blotting analysis and functional studies demonstrated that SSI-2 and SSI-3 mRNA were also induced by cytokine stimulation and their forced expression in mouse myeloid leukemia cell, M1, suppressed the apoptotic effect of LIF, like SSI-1. We also demonstrated the structure of human SSI-1. |