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Reactive sulfur species protect cells against oxidative stress and toxic substances, including heavy metals. Reactive sulfur species are produced by enzymes, such as cystathionine \u03b3-lyase (CSE), cystathionine \u03b2-synthase, 3-mercaptopyruvate sulfurtransferase, and cysteinyl-tRNA synthetase. However, little is known about the regulatory mechanisms underlying the expression of these enzymes in vascular endothelial cells. Bio-organometallics is a research field that analyzes biological systems using organic-inorganic hybrid molecules (organometallic compounds and metal coordinating compounds) as molecular probes. In the present study, we analyzed intracellular signaling pathways that mediate the expression of reactive sulfur species-producing enzymes in cultured bovine aortic endothelial cells, using copper diethyldithiocarbamate (Cu10). Cu10 selectively upregulated CSE gene expression in vascular endothelial cells independent of cell density. This transcriptional induction of endothelial CSE required both the diethyldithiocarbamate scaffold and the coordinated copper ion. Additionally, the present study revealed that ERK1\/2, p38 MAPK, and hypoxia-inducible factor (HIF)-1\u03b1\/HIF-1\u03b2 pathways mediate transcriptional induction of endothelial CSE by Cu10. The transcription factors NF-\u03baB, Sp1, and ATF4 were suggested to act in constitutive CSE expression, although the possibility that they are involved in the CSE induction by Cu10 cannot be excluded. The present study used a copper complex as a molecular probe to reveal that the transcription of CSE is regulated by multiple pathways in vascular endothelial cells, including ERK1\/2, p38 MAPK, and HIF-1\u03b1\/HIF-1\u03b2. Bio-organometallics appears to be an effective strategy for analyzing the functions of intracellular signaling pathways in vascular endothelial cells.<\/jats:p>","DOI":"10.3390\/ijms21176053","type":"journal-article","created":{"date-parts":[[2020,8,23]],"date-time":"2020-08-23T21:28:06Z","timestamp":1598218086000},"page":"6053","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Transcriptional Induction of Cystathionine \u03b3-Lyase, a Reactive Sulfur-Producing Enzyme, by Copper Diethyldithiocarbamate in Cultured Vascular Endothelial Cells"],"prefix":"10.3390","volume":"21","author":[{"given":"Tomoya","family":"Fujie","sequence":"first","affiliation":[{"name":"Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi 274-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akane","family":"Takahashi","sequence":"additional","affiliation":[{"name":"Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Musubu","family":"Takahashi","sequence":"additional","affiliation":[{"name":"Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takato","family":"Hara","sequence":"additional","affiliation":[{"name":"Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi 274-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asuka","family":"Soyama","sequence":"additional","affiliation":[{"name":"Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kosho","family":"Makino","sequence":"additional","affiliation":[{"name":"Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5965-3987","authenticated-orcid":false,"given":"Hideyo","family":"Takahashi","sequence":"additional","affiliation":[{"name":"Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chika","family":"Yamamoto","sequence":"additional","affiliation":[{"name":"Faculty of Pharmaceutical Sciences, Toho University, 2-2-1 Miyama, Funabashi 274-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4523-8234","authenticated-orcid":false,"given":"Yoshito","family":"Kumagai","sequence":"additional","affiliation":[{"name":"Environmental Biology Laboratory, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1198-6835","authenticated-orcid":false,"given":"Hiroshi","family":"Naka","sequence":"additional","affiliation":[{"name":"Research Center for Materials Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7393-2656","authenticated-orcid":false,"given":"Toshiyuki","family":"Kaji","sequence":"additional","affiliation":[{"name":"Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,8,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"267","DOI":"10.1016\/0300-483X(92)90029-E","article-title":"Effect of cadmium on the monolayer maintenance of vascular endothelial cells in culture","volume":"71","author":"Kaji","year":"1992","journal-title":"Toxicology"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1016\/0300-483X(93)90103-Y","article-title":"Cadmium stimulation of plasminogen activator inhibitor-1 release from human vascular endothelial cells in culture","volume":"83","author":"Yamamoto","year":"1993","journal-title":"Toxicology"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1016\/0300-483X(92)90104-M","article-title":"Inhibitory effect of lead on the release of tissue plasminogen activator from human vascular endothelial cells in culture","volume":"73","author":"Kaji","year":"1992","journal-title":"Toxicology"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"247","DOI":"10.1016\/0378-4274(93)90005-I","article-title":"Zinc protection against cadmium-induced destruction of the monolayer of cultured vascular endothelial cells","volume":"66","author":"Kaji","year":"1993","journal-title":"Toxicol. 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