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RefSeq (mRNA)



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Suppressor of cytokine signaling 2 is a protein that in humans is encoded by the SOCS2 gene.[1][2][3]

This gene encodes a member of the STAT-induced STAT inhibitor (SSI), also known as suppressor of cytokine signalling (SOCS), family. SSI family members are cytokine-inducible negative regulators of cytokine signaling. The expression of this gene can be induced by a subset of cytokines, including erythropoietin, GM-CSF, IL10 and interferon-gamma (IFN-gamma). The protein encoded by this gene is found to interact with the cytoplasmic domain of insulin-like growth factor 1 receptor (IGF1R), and thus is thought to be involved in the regulation of IGF1R mediated cell signaling.[4] Knockout studies in mice also suggested a regulatory role of this gene in IGF-1 related growth control.[3][5]


SOCS2 has been shown to interact with insulin-like growth factor 1 receptor[4] and erythropoietin receptor.[6]


  1. Masuhara M; Sakamoto H; Matsumoto A; Suzuki R; Yasukawa H; Mitsui K; Wakioka T; Tanimura S; Sasaki A; Misawa H; Yokouchi M; Ohtsubo M; Yoshimura A (November 1997). "Cloning and characterization of novel CIS family genes". Biochem Biophys Res Commun. 239 (2): 439–46. doi:10.1006/bbrc.1997.7484. PMID 9344848.
  2. Minamoto S; Ikegame K; Ueno K; Narazaki M; Naka T; Yamamoto H; Matsumoto T; Saito H; Hosoe S; Kishimoto T (September 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. doi:10.1006/bbrc.1997.7080. PMID 9266833.
  3. 3.0 3.1 "Entrez Gene: SOCS2 suppressor of cytokine signaling 2".
  4. 4.0 4.1 Dey BR; Spence SL; Nissley P; Furlanetto RW (September 1998). "Interaction of human suppressor of cytokine signaling (SOCS)-2 with the insulin-like growth factor-I receptor". J. Biol. Chem. 273 (37): 24095–101. doi:10.1074/jbc.273.37.24095. PMID 9727029.
  5. Greenhalgh CJ; Bertolino P; Asa SL; Metcalf D; Corbin JE; Adams TE; Davey HW; Nicola NA; Hilton DJ; Alexander WS (June 2002). "Growth enhancement in suppressor of cytokine signaling 2 (SOCS-2)-deficient mice is dependent on signal transducer and activator of transcription 5b (STAT5b)". Mol. Endocrinol. 16 (6): 1394–406. doi:10.1210/me.16.6.1394. PMID 12040024.
  6. Eyckerman, S; Verhee A; der Heyden J V; Lemmens I; Ostade X V; Vandekerckhove J; Tavernier J (Dec 2001). "Design and application of a cytokine-receptor-based interaction trap". Nat. Cell Biol. England. 3 (12): 1114–9. doi:10.1038/ncb1201-1114. ISSN 1465-7392. PMID 11781573.

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