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<datestamp>2017-12-21</datestamp>
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<title lang=en>[1-9-NαC]-crourorb A1 isolated from Croton urucurana latex induces G2/M cell cycle arrest and apoptosis in human hepatocarcinoma cells</title>
<creator>Matos Cândido-Bacani, Priscila, </creator>
<creator>Ezan, Frédéric</creator>
<creator>Oliveira Figueiredo, Patrícia, </creator>
<creator>Matos, Maria de Fátima Cepa</creator>
<creator>Rodrigues Garcez, Fernanda</creator>
<creator>Silva Garcez, Walmir</creator>
<creator>Baffet, Georges</creator>
<contributor>Universidade Federal de Mato Grosso do Sul, Campo Grande</contributor>
<contributor>Institut de recherche, santé, environnement et travail [Rennes] (Irset) ; Université d'Angers (UA) - Université des Antilles et de la Guyane (UAG) - Université de Rennes 1 (UR1) - École des Hautes Études en Santé Publique [EHESP] (EHESP) - Institut National de la Santé et de la Recherche Médicale (INSERM) - Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )</contributor>
<contributor>Fundect-MS, CNPq, and CPq-PROPP-UFMS</contributor>
<contributor>French Institut National de la Santé et de la Recherche Médicale (Inserm), the Ligue contre le cancer du Grand Ouest, the Région Bretagne and University of Rennes 1</contributor>
<description>Thanks to Dr M. Blanchard-Desce (UMR CNRS 5255, University of Bordeaux, France), who kindly provided us with fluorescent dye RS19 and the PIXEL, MRIc, flow cytometry and H2P2 platforms (SFR Biosit, UMS CNRS 3480/US INSERM 018, Rennes).</description>
<description>International audience</description>
<source>ISSN: 0378-4274</source>
<source>Toxicology Letters</source>
<publisher>Elsevier</publisher>
<identifier>hal-01526429</identifier>
<identifier>https://hal-univ-rennes1.archives-ouvertes.fr/hal-01526429</identifier>
<identifier>https://hal-univ-rennes1.archives-ouvertes.fr/hal-01526429/document</identifier>
<identifier>https://hal-univ-rennes1.archives-ouvertes.fr/hal-01526429/file/de%20Matos%20C%C3%A2ndido-Bacani%20et%20al.%20-%20%5B1%E2%80%939-N%CE%B1C%5D-crourorb%20A1%20isolated%20from%20Croton%20urucura.pdf</identifier>
<source>https://hal-univ-rennes1.archives-ouvertes.fr/hal-01526429</source>
<source>Toxicology Letters, Elsevier, 2017, 273, pp.44-54. 〈10.1016/j.toxlet.2017.03.020〉</source>
<identifier>DOI : 10.1016/j.toxlet.2017.03.020</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.toxlet.2017.03.020</relation>
<identifier>PUBMED : 28343894</identifier>
<relation>info:eu-repo/semantics/altIdentifier/pmid/28343894</relation>
<language>en</language>
<subject lang=en>Apoptosis</subject>
<subject lang=en> Cell cycle arrest</subject>
<subject lang=en> Croton urucurana</subject>
<subject lang=en> Huh-7 cells</subject>
<subject lang=en> Peptide</subject>
<subject>[SDV.EE.SANT] Life Sciences [q-bio]/Ecology, environment/Health</subject>
<subject>[SDV.TOX] Life Sciences [q-bio]/Toxicology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>[1-9-NαC]-crourorb A1 is a cyclic peptide isolated from Croton urucurana Baillon latex, found in midwestern Brazil, that has been shown to exert cytotoxic effects against a panel of cancer cell lines. However, the underlying mechanisms responsible for the crourorb A1-induced cytotoxicity in cancer cells remain unknown. In this study, the effects of crourorb A1 on the viability, apoptosis, cell cycle and migration of Huh-7 (human hepatocarcinoma) cells were investigated. We evaluated the viability of Huh-7 cells treated with crourorb A1 in 2D and 3D collagen cultures and found that cells in 3D culture exhibited increased resistance to crourorb A1 compared to cells in 2D culture (IC50: 62μg/ml versus 35.75μg/ml). Crourorb A1 treatment decreases the viability of Huh-7 cells in a dose- and time-dependent manner and is associated with the induction of apoptosis, in the absence of necrotic cells, through the activation of caspase-3/7 and increased expression of the pro-apoptotic proteins Bak, Bid, Bax, Puma, Bim, and Bad. The effects of crourorb A1 are also associated with G2/M phase cell cycle arrest and increases in cyclin-dependent kinase (CDK1) and cyclin B1 expression. A significant reduction in Huh-7 cell migration induced by crourorb A1 was also observed in the presence of mitomycin C. Finally, we showed that the JNK/MAP pathway, but not ERK signaling, is involved in crourorb A1-induced hepatocarcinoma cell mortality.</description>
<date>2017</date>
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