PMID- 22874763 OWN - NLM STAT- MEDLINE DCOM- 20130111 LR - 20240322 IS - 1522-1466 (Electronic) IS - 1931-857X (Print) IS - 1522-1466 (Linking) VI - 303 IP - 8 DP - 2012 Oct 15 TI - Activated CD47 regulates multiple vascular and stress responses: implications for acute kidney injury and its management. PG - F1117-25 LID - 10.1152/ajprenal.00359.2012 [doi] AB - Ischemia-reperfusion injury (IRI) remains a significant source of early and delayed renal transplant failure. Therapeutic interventions have yet to resolve this ongoing clinical challenge although the reasons for this remain unclear. The cell surface receptor CD47 is widely expressed on vascular cells and in tissues. It has one known soluble ligand, the stress-released matricellular protein thrombospondin-1 (TSP1). The TSP1-CD47 ligand receptor axis controls a number of important cellular processes, inhibiting survival factors such as nitric oxide, cGMP, cAMP, and VEGF, while activating injurious pathways such as production of reactive oxygen species. A role of CD47 in renal IRI was recently revealed by the finding that the TSP1-CD47 axis is induced in renal tubular epithelial cells (RTEC) under hypoxia and following IRI. The absence of CD47 in knockout mice increases survival, mitigates RTEC damage, and prevents subsequent kidney failure. Conversely, therapeutic blockade of TSP1-CD47 signaling provides these same advantages to wild-type animals. Together, these findings suggest an important role for CD47 in renal IRI as a proximate promoter of injury and as a novel therapeutic target. FAU - Rogers, Natasha M AU - Rogers NM AD - Vascular Medicine Institute, University of Pittsburgh School of Medicine, 200 Lothrop St., Pittsburgh, PA 15261, USA. FAU - Yao, Mingyi AU - Yao M FAU - Novelli, Enrico M AU - Novelli EM FAU - Thomson, Angus W AU - Thomson AW FAU - Roberts, David D AU - Roberts DD FAU - Isenberg, Jeffrey S AU - Isenberg JS LA - eng GR - K23 HL112848/HL/NHLBI NIH HHS/United States GR - 1P01HL103455-01/HL/NHLBI NIH HHS/United States GR - P01 HL103455/HL/NHLBI NIH HHS/United States GR - R01 HL-108954/HL/NHLBI NIH HHS/United States GR - R01 HL112914/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20120808 PL - United States TA - Am J Physiol Renal Physiol JT - American journal of physiology. Renal physiology JID - 100901990 RN - 0 (CD47 Antigen) RN - 0 (Reactive Oxygen Species) RN - 0 (Thrombospondin 1) SB - IM MH - Acute Kidney Injury/*metabolism/therapy MH - Animals MH - CD47 Antigen/*metabolism MH - Humans MH - Kidney/*metabolism MH - Mice MH - Reactive Oxygen Species/metabolism MH - Reperfusion Injury/metabolism MH - Thrombospondin 1/*metabolism PMC - PMC3469673 EDAT- 2012/08/10 06:00 MHDA- 2013/01/12 06:00 PMCR- 2013/10/15 CRDT- 2012/08/10 06:00 PHST- 2012/08/10 06:00 [entrez] PHST- 2012/08/10 06:00 [pubmed] PHST- 2013/01/12 06:00 [medline] PHST- 2013/10/15 00:00 [pmc-release] AID - ajprenal.00359.2012 [pii] AID - F-00359-2012 [pii] AID - 10.1152/ajprenal.00359.2012 [doi] PST - ppublish SO - Am J Physiol Renal Physiol. 2012 Oct 15;303(8):F1117-25. doi: 10.1152/ajprenal.00359.2012. Epub 2012 Aug 8.