PMID- 11231630 OWN - NLM STAT- MEDLINE DCOM- 20010405 LR - 20141120 IS - 1078-8956 (Print) IS - 1078-8956 (Linking) VI - 7 IP - 3 DP - 2001 Mar TI - ORP150 protects against hypoxia/ischemia-induced neuronal death. PG - 317-23 AB - Oxygen-regulated protein 150 kD (ORP150) is a novel endoplasmic-reticulum-associated chaperone induced by hypoxia/ischemia. Although ORP150 was sparingly upregulated in neurons from human brain undergoing ischemic stress, there was robust induction in astrocytes. Cultured neurons overexpressing ORP150 were resistant to hypoxemic stress, whereas astrocytes with inhibited ORP150 expression were more vulnerable. Mice with targeted neuronal overexpression of ORP150 had smaller strokes compared with controls. Neurons with increased ORP150 demonstrated suppressed caspase-3-like activity and enhanced brain-derived neurotrophic factor (BDNF) under hypoxia signaling. These data indicate that ORP150 is an integral participant in ischemic cytoprotective pathways. FAU - Tamatani, M AU - Tamatani M AD - Department of Anatomy and Neuroscience, Graduate School of Medicine, Osaka University, Osaka, Japan. tamatani@h8.dion.ne.jp FAU - Matsuyama, T AU - Matsuyama T FAU - Yamaguchi, A AU - Yamaguchi A FAU - Mitsuda, N AU - Mitsuda N FAU - Tsukamoto, Y AU - Tsukamoto Y FAU - Taniguchi, M AU - Taniguchi M FAU - Che, Y H AU - Che YH FAU - Ozawa, K AU - Ozawa K FAU - Hori, O AU - Hori O FAU - Nishimura, H AU - Nishimura H FAU - Yamashita, A AU - Yamashita A FAU - Okabe, M AU - Okabe M FAU - Yanagi, H AU - Yanagi H FAU - Stern, D M AU - Stern DM FAU - Ogawa, S AU - Ogawa S FAU - Tohyama, M AU - Tohyama M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Nat Med JT - Nature medicine JID - 9502015 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (HSP70 Heat-Shock Proteins) RN - 0 (Proteins) RN - 0 (oxygen-regulated proteins) SB - IM MH - Animals MH - Brain/cytology/metabolism MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cell Death/*physiology MH - *Cell Hypoxia MH - HSP70 Heat-Shock Proteins MH - Humans MH - Mice MH - Neurons/metabolism/*pathology MH - Proteins/antagonists & inhibitors/*physiology EDAT- 2001/03/07 10:00 MHDA- 2001/04/06 10:01 CRDT- 2001/03/07 10:00 PHST- 2001/03/07 10:00 [pubmed] PHST- 2001/04/06 10:01 [medline] PHST- 2001/03/07 10:00 [entrez] AID - 85463 [pii] AID - 10.1038/85463 [doi] PST - ppublish SO - Nat Med. 2001 Mar;7(3):317-23. doi: 10.1038/85463.