PMID- 23355268 OWN - NLM STAT- MEDLINE DCOM- 20130701 LR - 20211203 IS - 1530-6860 (Electronic) IS - 0892-6638 (Print) IS - 0892-6638 (Linking) VI - 27 IP - 5 DP - 2013 May TI - mTOR and vascular remodeling in lung diseases: current challenges and therapeutic prospects. PG - 1796-807 LID - 10.1096/fj.12-222224 [doi] AB - Mammalian target of rapamycin (mTOR) is a major regulator of cellular metabolism, proliferation, and survival that is implicated in various proliferative and metabolic diseases, including obesity, type 2 diabetes, hamartoma syndromes, and cancer. Emerging evidence suggests a potential critical role of mTOR signaling in pulmonary vascular remodeling. Remodeling of small pulmonary arteries due to increased proliferation, resistance to apoptosis, and altered metabolism of cells forming the pulmonary vascular wall is a key currently irreversible pathological feature of pulmonary hypertension, a progressive pulmonary vascular disorder with high morbidity and mortality. In addition to rare familial and idiopathic forms, pulmonary hypertension is also a life-threatening complication of several lung diseases associated with hypoxia. This review aims to summarize our current knowledge and recent advances in understanding the role of the mTOR pathway in pulmonary vascular remodeling, with a specific focus on the hypoxia component, a confirmed shared trigger of pulmonary hypertension in lung diseases. We also discuss the emerging role of mTOR as a promising therapeutic target and mTOR inhibitors as potential pharmacological approaches to treat pulmonary vascular remodeling in pulmonary hypertension. FAU - Goncharova, Elena A AU - Goncharova EA AD - University of Pennsylvania Perelman School of Medicine, Translational Research Laboratories, Rm. 1214, 125 South 31st St., Philadelphia, PA 19104, USA. goncharo@mail.med.upenn.edu LA - eng GR - R01 HL113178/HL/NHLBI NIH HHS/United States GR - 1R01HL113178/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 - 20130125 PL - United States TA - FASEB J JT - FASEB journal : official publication of the Federation of American Societies for Experimental Biology JID - 8804484 RN - 0 (Calcium Channels) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (Multiprotein Complexes) RN - EC 2.7.1.1 (MTOR protein, human) RN - EC 2.7.11.1 (Mechanistic Target of Rapamycin Complex 1) RN - EC 2.7.11.1 (Mechanistic Target of Rapamycin Complex 2) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - W36ZG6FT64 (Sirolimus) SB - IM MH - Apoptosis/physiology MH - Autophagy/physiology MH - Calcium Channels/physiology MH - Cell Proliferation/drug effects MH - Humans MH - Hypertension, Pulmonary/*physiopathology MH - Hypoxia/complications/physiopathology MH - Intercellular Signaling Peptides and Proteins/physiology MH - Lung/*blood supply MH - Mechanistic Target of Rapamycin Complex 1 MH - Mechanistic Target of Rapamycin Complex 2 MH - Multiprotein Complexes/physiology MH - Muscle, Smooth, Vascular/cytology MH - Pulmonary Artery/physiopathology MH - Pulmonary Circulation MH - Signal Transduction MH - Sirolimus/pharmacology MH - TOR Serine-Threonine Kinases/antagonists & inhibitors/*physiology MH - Vascular Diseases/physiopathology PMC - PMC3633815 EDAT- 2013/01/29 06:00 MHDA- 2013/07/03 06:00 PMCR- 2014/05/01 CRDT- 2013/01/29 06:00 PHST- 2013/01/29 06:00 [entrez] PHST- 2013/01/29 06:00 [pubmed] PHST- 2013/07/03 06:00 [medline] PHST- 2014/05/01 00:00 [pmc-release] AID - fj.12-222224 [pii] AID - 12-222224 [pii] AID - 10.1096/fj.12-222224 [doi] PST - ppublish SO - FASEB J. 2013 May;27(5):1796-807. doi: 10.1096/fj.12-222224. Epub 2013 Jan 25.