PMID- 28258189 OWN - NLM STAT- MEDLINE DCOM- 20170912 LR - 20181113 IS - 1530-6860 (Electronic) IS - 0892-6638 (Print) IS - 0892-6638 (Linking) VI - 31 IP - 6 DP - 2017 Jun TI - Selective expression of TSPAN2 in vascular smooth muscle is independently regulated by TGF-beta1/SMAD and myocardin/serum response factor. PG - 2576-2591 LID - 10.1096/fj.201601021R [doi] AB - Tetraspanins (TSPANs) comprise a large family of 4-transmembrane domain proteins. The importance of TSPANs in vascular smooth muscle cells (VSMCs) is unexplored. Given that TGF-beta1 and myocardin (MYOCD) are potent activators for VSMC differentiation, we screened for TGF-beta1 and MYOCD/serum response factor (SRF)-regulated TSPANs in VSMC by using RNA-seq analyses and RNA-arrays. TSPAN2 was found to be the only TSPAN family gene induced by TGF-beta1 and MYOCD, and reduced by SRF deficiency in VSMCs. We also found that TSPAN2 is highly expressed in smooth muscle-enriched tissues and down-regulated in in vitro models of VSMC phenotypic modulation. TSPAN2 expression is attenuated in mouse carotid arteries after ligation injury and in failed human arteriovenous fistula samples after occlusion by dedifferentiated neointimal VSMC. In vitro functional studies showed that TSPAN2 suppresses VSMC proliferation and migration. Luciferase reporter and chromatin immunoprecipitation assays demonstrated that TSPAN2 is regulated by 2 parallel pathways, MYOCD/SRF and TGF-beta1/SMAD, via distinct binding elements within the proximal promoter. Thus, we identified the first VSMC-enriched and MYOCD/SRF and TGF-beta1/SMAD-dependent TSPAN family member, whose expression is intimately associated with VSMC differentiation and negatively correlated with vascular disease. Our results suggest that TSPAN2 may play important roles in vascular disease.-Zhao, J., Wu, W., Zhang, W., Lu, Y. W., Tou, E., Ye, J., Gao, P., Jourd'heuil, D., Singer, H. A., Wu, M., Long, X. Selective expression of TSPAN2 in vascular smooth muscle is independently regulated by TGF-beta1/SMAD and myocardin/serum response factor. CI - (c) FASEB. FAU - Zhao, Jinjing AU - Zhao J AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Wu, Wen AU - Wu W AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Zhang, Wei AU - Zhang W AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Lu, Yao Wei AU - Lu YW AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Tou, Emiley AU - Tou E AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Ye, Jiemei AU - Ye J AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Gao, Ping AU - Gao P AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Jourd'heuil, David AU - Jourd'heuil D AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Singer, Harold A AU - Singer HA AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Wu, Mingfu AU - Wu M AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA. FAU - Long, Xiaochun AU - Long X AD - Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, USA longx@mail.amc.edu. LA - eng GR - R01 HL049426/HL/NHLBI NIH HHS/United States GR - R01 HL121700/HL/NHLBI NIH HHS/United States GR - R01 HL122686/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20170303 PL - United States TA - FASEB J JT - FASEB journal : official publication of the Federation of American Societies for Experimental Biology JID - 8804484 RN - 0 (Nerve Tissue Proteins) RN - 0 (Nuclear Proteins) RN - 0 (Serum Response Factor) RN - 0 (Smad Proteins) RN - 0 (TSPAN2 protein, human) RN - 0 (Tetraspanins) RN - 0 (Trans-Activators) RN - 0 (Transforming Growth Factor beta1) RN - 0 (Tspan2 protein, mouse) RN - 0 (myocardin) SB - IM MH - Cell Differentiation MH - Gene Expression Regulation/physiology MH - Humans MH - Male MH - Muscle, Smooth, Vascular/*metabolism MH - Myocytes, Smooth Muscle/physiology MH - Nerve Tissue Proteins/genetics/*metabolism MH - Nuclear Proteins/genetics/*metabolism MH - Promoter Regions, Genetic MH - Serum Response Factor/genetics/*metabolism MH - Smad Proteins/genetics/*metabolism MH - Tetraspanins/genetics/*metabolism MH - Trans-Activators/genetics/*metabolism MH - Transcriptome MH - Transforming Growth Factor beta1/genetics/*metabolism PMC - PMC5434656 OTO - NOTNLM OT - arteriovenous fistula OT - differentiation OT - phenotypic modulation OT - tetraspanins EDAT- 2017/03/05 06:00 MHDA- 2017/09/13 06:00 PMCR- 2018/06/01 CRDT- 2017/03/05 06:00 PHST- 2016/09/06 00:00 [received] PHST- 2017/02/13 00:00 [accepted] PHST- 2017/03/05 06:00 [pubmed] PHST- 2017/09/13 06:00 [medline] PHST- 2017/03/05 06:00 [entrez] PHST- 2018/06/01 00:00 [pmc-release] AID - fj.201601021R [pii] AID - FJ_201601021R [pii] AID - 10.1096/fj.201601021R [doi] PST - ppublish SO - FASEB J. 2017 Jun;31(6):2576-2591. doi: 10.1096/fj.201601021R. Epub 2017 Mar 3.