PMID- 20299783 OWN - NLM STAT- MEDLINE DCOM- 20101012 LR - 20161125 IS - 1421-9670 (Electronic) IS - 0250-8095 (Linking) VI - 31 IP - 5 DP - 2010 TI - Suppressor of cytokine signaling-1 ameliorates expression of MCP-1 in diabetic nephropathy. PG - 380-8 LID - 10.1159/000286559 [doi] AB - BACKGROUND: Janus kinase (JAK)/signal transducers and activators of transcription (STAT) contribute to diabetic nephropathy. Suppressor of cytokine signaling-1 (SOCS-1) is one of the negative feedback regulators of JAK/STAT signaling. This study investigated the effect of SOCS-1 on the JAK/STAT pathway and MCP-1 expression in diabetic nephropathy. METHODS: Streptozotocin-induced diabetic mice received pEF-FLAG-I/mSOCS-1 plasmid or pEF-FLAG-I vector for 4 weeks and were compared with age-matched nondiabetic mice. Functional and pathologic markers, expression of monocyte chemoattractant protein-1 (MCP-1) and TGF-beta1 and phosphorylation of STAT1 and STAT3 were assessed. The effect of SOCS-1 on the expression of MCP-1 in mesangial cells under high glucose conditions was also examined. RESULTS: Urine albumin excretion and renal hypertrophy were alleviated in diabetic mice by overexpression of SOCS-1. The expression of TGF-beta1 and MCP-1 and the activation of STAT1 and STAT3 were significantly inhibited in diabetic kidney by gene delivery of SOCS-1. In cultured mesangial cells, overexpression of SOCS-1 markedly suppressed high glucose-induced MCP-1 expression. CONCLUSIONS: This study suggests that SOCS-1 may attenuate renal damage by ameliorating MCP-1 expression and regulation of the phosphorylation of JAK/STAT in diabetic mice. CI - 2010 S. Karger AG, Basel. FAU - Shi, Yonghong AU - Shi Y AD - Department of Pathology, Hebei Medical University, Shijiazhuang, PR China. FAU - Du, Chunyang AU - Du C FAU - Zhang, Yanling AU - Zhang Y FAU - Ren, Yunzhuo AU - Ren Y FAU - Hao, Jun AU - Hao J FAU - Zhao, Song AU - Zhao S FAU - Yao, Fang AU - Yao F FAU - Duan, Huijun AU - Duan H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100319 PL - Switzerland TA - Am J Nephrol JT - American journal of nephrology JID - 8109361 RN - 0 (Blood Glucose) RN - 0 (CCL2 protein, human) RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (SOCS1 protein, human) RN - 0 (STAT1 Transcription Factor) RN - 0 (Socs1 protein, mouse) RN - 0 (Stat1 protein, mouse) RN - 0 (Suppressor of Cytokine Signaling 1 Protein) RN - 0 (Suppressor of Cytokine Signaling Proteins) RN - 0 (Transforming Growth Factor beta1) SB - IM MH - Animals MH - Blood Glucose/metabolism MH - Chemokine CCL2/*metabolism MH - Diabetes Mellitus, Experimental/*blood/therapy MH - Diabetic Nephropathies/*blood/*therapy MH - Humans MH - Immunohistochemistry/methods MH - Male MH - Mice MH - Phosphorylation MH - STAT1 Transcription Factor/metabolism MH - Suppressor of Cytokine Signaling 1 Protein MH - Suppressor of Cytokine Signaling Proteins/*metabolism MH - Transforming Growth Factor beta1/biosynthesis EDAT- 2010/03/20 06:00 MHDA- 2010/10/13 06:00 CRDT- 2010/03/20 06:00 PHST- 2009/11/18 00:00 [received] PHST- 2010/02/03 00:00 [accepted] PHST- 2010/03/20 06:00 [entrez] PHST- 2010/03/20 06:00 [pubmed] PHST- 2010/10/13 06:00 [medline] AID - 000286559 [pii] AID - 10.1159/000286559 [doi] PST - ppublish SO - Am J Nephrol. 2010;31(5):380-8. doi: 10.1159/000286559. Epub 2010 Mar 19.