PMID- 19949909 OWN - NLM STAT- MEDLINE DCOM- 20100928 LR - 20240317 IS - 1466-1268 (Electronic) IS - 1355-8145 (Print) IS - 1355-8145 (Linking) VI - 15 IP - 4 DP - 2010 Jul TI - Hyperbaric oxygen induces a cytoprotective and angiogenic response in human microvascular endothelial cells. PG - 431-42 LID - 10.1007/s12192-009-0159-0 [doi] AB - A genome-wide microarray analysis of gene expression was carried out on human microvascular endothelial cells (HMEC-1) exposed to hyperbaric oxygen treatment (HBOT) under conditions that approximated clinical settings. Highly up-regulated genes included immediate early transcription factors (FOS, FOSB, and JUNB) and metallothioneins. Six molecular chaperones were also up-regulated immediately following HBOT, and all of these have been implicated in protein damage control. Pathway analysis programs identified the Nrf-2-mediated oxidative stress response as one of the primary responders to HBOT. Several of the microarray changes in the Nrf2 pathway and a molecular chaperone were validated using quantitative PCR. For all of the genes tested (Nrf2, HMOX1, HSPA1A, M1A, ACTC1, and FOS), HBOT elicited large responses, whereas changes were minimal following treatment with 100% O(2) in the absence of elevated pressure. The increased expression of immediate early and cytoprotective genes corresponded with an HBOT-induced increase in cell proliferation and oxidative stress resistance. In addition, HBOT treatment enhanced endothelial tube formation on Matrigel plates, with particularly dramatic effects observed following two daily HBO treatments. Understanding how HBOT influences gene expression changes in endothelial cells may be beneficial for improving current HBOT-based wound-healing protocols. These data also point to other potential HBOT applications where stimulating protection and repair of the endothelium would be beneficial, such as patient preconditioning prior to major surgery. FAU - Godman, Cassandra A AU - Godman CA AD - Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, USA. Cassandra.Godman@uconn.edu FAU - Chheda, Kousanee P AU - Chheda KP FAU - Hightower, Lawrence E AU - Hightower LE FAU - Perdrizet, George AU - Perdrizet G FAU - Shin, Dong-Guk AU - Shin DG FAU - Giardina, Charles AU - Giardina C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20091201 PL - Netherlands TA - Cell Stress Chaperones JT - Cell stress & chaperones JID - 9610925 RN - 0 (Molecular Chaperones) RN - 0 (NF-E2-Related Factor 2) SB - IM MH - Cytoprotection MH - Endothelial Cells/cytology/*metabolism MH - Endothelium, Vascular/*cytology MH - Gene Expression Regulation MH - Humans MH - *Hyperbaric Oxygenation MH - Microarray Analysis MH - Molecular Chaperones/genetics/metabolism MH - NF-E2-Related Factor 2/genetics/metabolism MH - Neovascularization, Physiologic MH - Signal Transduction MH - Up-Regulation PMC - PMC3082642 EDAT- 2009/12/02 06:00 MHDA- 2010/09/30 06:00 PMCR- 2011/01/01 CRDT- 2009/12/02 06:00 PHST- 2009/09/17 00:00 [received] PHST- 2009/11/04 00:00 [accepted] PHST- 2009/11/02 00:00 [revised] PHST- 2009/12/02 06:00 [entrez] PHST- 2009/12/02 06:00 [pubmed] PHST- 2010/09/30 06:00 [medline] PHST- 2011/01/01 00:00 [pmc-release] AID - S1355-8145(23)00568-0 [pii] AID - 159 [pii] AID - 10.1007/s12192-009-0159-0 [doi] PST - ppublish SO - Cell Stress Chaperones. 2010 Jul;15(4):431-42. doi: 10.1007/s12192-009-0159-0. Epub 2009 Dec 1.