ESDN, a Novel Neuropilin-like Membrane Protein Cloned from Vascular Cells with the Longest Secretory Signal Sequence among Eukaryotes, Is Up-regulated after Vascular Injury

Kazuhiro Kobuke, Yutaka Furukawa, Manabu Sugai, Kenji Tanigaki, Naohiro Ohashi, Akira Matsumori, Shigetake Sasayama, Tasuku Honjo, Kei Tashiro
2001 Journal of Biological Chemistry  
A novel cDNA has been isolated from primary culture of human coronary arterial cells by a signal sequence trap method, and designated ESDN (endothelial and smooth muscle cell-derived neuropilin-like molecule). ESDN is a type-I transmembrane protein with the longest cleavable secretory signal sequence among eukaryotes. ESDN contains a CUB domain and a coagulation factor V/VIII homology domain, which reminds us of the structure of neuropilins. ESDN also harbors an LCCL domain, which is shared by
more » ... which is shared by Limulus factor C and Coch. Mouse and rat counterparts were also identified revealing >84% amino acid identity with human ESDN. The human ESDN gene was mapped between D3S1552 and D3S1271. Northern blot analysis showed that ESDN mRNA was expressed in various tissues; particularly highly expressed in cultured vascular smooth muscle cells. The ESDN expression was up-regulated in plateletderived growth factor-BB-stimulated vascular smooth muscle cells in vitro and neointima of the ballooninjured carotid artery in vivo. Overexpression of ESDN in 293T cells suppressed their bromodeoxyuridine uptake. In addition, ESDN protein was strongly expressed in nerve bundles in rodents. Thus, ESDN is considered to play a role in regulation of vascular cell growth and may have a wide variety of functions in other tissues including the nervous system, like neuropilins. 1 The abbreviations used are: VEGF, vascular endothelial growth factor; AT-II, angiotensin II; BrdUrd, 5-bromo-2Ј-deoxyuridine; CUB domain, domain found in complement subcomponents C1r/C1s, Uegf, and bone morphogenetic protein-
doi:10.1074/jbc.m105293200 pmid:11447234 fatcat:psbxw36czbhqlnpifkhtwhvham