PMID- 15976330 OWN - NLM STAT- MEDLINE DCOM- 20060106 LR - 20111102 IS - 1524-4636 (Electronic) IS - 1079-5642 (Linking) VI - 25 IP - 9 DP - 2005 Sep TI - Important role of apoptosis signal-regulating kinase 1 in ischemia-induced angiogenesis. PG - 1877-83 AB - OBJECTIVE: We first examined the role of apoptosis signal-regulating kinase 1 (ASK1), one of mitogen-activated protein kinase kinase kinases, in ischemia-induced angiogenesis. METHODS AND RESULTS: Unilateral hindlimb ischemia was induced surgically in C57BL/6J wild-type (WT) mice or mice deficient in ASK1 (ASK1(-/-)). ASK1 activity in WT mouse hindlimb was increased dramatically after ischemia. By laser Doppler analysis, well-developed collateral vessels and angiogenesis were observed in WT mice in response to hindlimb ischemia, whereas these responses were reduced in ASK1(-/-) mice. Immunostaining revealed that infiltration of macrophages and T lymphocytes was suppressed in the ischemic tissues of ASK1(-/-) mice compared with WT mice. The expression of vascular endothelial growth factor (VEGF) and monocyte chemoattractant protein-1 (MCP-1) proteins in ischemic tissues was weaker in ASK1(-/-) mice compared with WT mice. In vitro study on endothelial cells indicated that dominant-negative ASK1 significantly attenuated hydrogen peroxide-induced VEGF and MCP-1 production. Furthermore, in vivo blockade of MCP-1 by its neutralizing antibody suppressed the recovery of the blood flow and capillary formation after ischemia. CONCLUSIONS: ASK1 pathway promotes early angiogenesis by inducing inflammatory cell infiltration and VEGF and MCP-1 expression. ASK1 may provide the basis for the development of new therapeutic strategy for angiogenesis. FAU - Izumi, Yasukatsu AU - Izumi Y AD - Department of Pharmacology, Osaka City University Medical School, Japan. FAU - Kim-Mitsuyama, Shokei AU - Kim-Mitsuyama S FAU - Yoshiyama, Minoru AU - Yoshiyama M FAU - Omura, Takashi AU - Omura T FAU - Shiota, Masayuki AU - Shiota M FAU - Matsuzawa, Atsushi AU - Matsuzawa A FAU - Yukimura, Tokihito AU - Yukimura T FAU - Murohara, Toyoaki AU - Murohara T FAU - Takeya, Motohiro AU - Takeya M FAU - Ichijo, Hidenori AU - Ichijo H FAU - Yoshikawa, Junichi AU - Yoshikawa J FAU - Iwao, Hiroshi AU - Iwao H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20050623 PL - United States TA - Arterioscler Thromb Vasc Biol JT - Arteriosclerosis, thrombosis, and vascular biology JID - 9505803 RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Vascular Endothelial Growth Factor A) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 2.7.11.25 (MAP Kinase Kinase Kinase 5) RN - EC 2.7.11.25 (Map3k5 protein, mouse) SB - IM MH - Animals MH - Capillaries/physiology MH - Chemokine CCL2/antagonists & inhibitors/metabolism MH - Disease Models, Animal MH - Endothelium, Vascular/cytology/immunology/metabolism MH - Hindlimb/blood supply MH - Humans MH - Ischemia/*immunology/*metabolism MH - MAP Kinase Kinase Kinase 5/*genetics/*metabolism MH - Macrophages/immunology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Mutant Strains MH - Mitogen-Activated Protein Kinases/metabolism MH - Neovascularization, Physiologic/*physiology MH - T-Lymphocytes/immunology MH - Umbilical Veins/cytology MH - Vascular Endothelial Growth Factor A/metabolism EDAT- 2005/06/25 09:00 MHDA- 2006/01/07 09:00 CRDT- 2005/06/25 09:00 PHST- 2005/06/25 09:00 [pubmed] PHST- 2006/01/07 09:00 [medline] PHST- 2005/06/25 09:00 [entrez] AID - 01.ATV.0000174801.76234.bd [pii] AID - 10.1161/01.ATV.0000174801.76234.bd [doi] PST - ppublish SO - Arterioscler Thromb Vasc Biol. 2005 Sep;25(9):1877-83. doi: 10.1161/01.ATV.0000174801.76234.bd. Epub 2005 Jun 23.