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The chemically modified poly(3-hydroxybutyrate) is receiving increasing attention for use as biomimetic copolymers for cell growth. As of yet, these copolymers cannot be used efficiently because of the lack of good mechanical properties. Here, we address this challenge, preparing a composite-scaffold of grafted poly(3-hydroxybutyrate) polyurethane for the first time. However, it is unclear if the composite structure and morphology can also offer a biological application. We obtained the polyurethane by mixing a polyester hydroxylated resin with polyisocyanate and the modified polyhydroxyalkanoates. The results show that the poly(3-hydroxybutyrate) grafted with poly(vinyl alcohol) can be successfully used as a chain extender to form a chemically-crosslinked thermosetting polymer. Furthermore, we show a proposal for the mechanism of the polyurethane synthesis, the analysis of its morphology and the ability of the scaffolds for growing mammalian cells. We demonstrated that astrocytes isolated from mouse cerebellum and HEK293 can be cultured in the prepared material and express efficiently fluorescent proteins by adenoviral transduction. We also tested the metabolism of Ca<jats:sup>2+<\/jats:sup> to obtain evidence of the biological activity.<\/jats:p>","DOI":"10.1038\/srep31140","type":"journal-article","created":{"date-parts":[[2016,8,9]],"date-time":"2016-08-09T08:59:11Z","timestamp":1470733151000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Novel Poly(3-hydroxybutyrate-g-vinyl alcohol) Polyurethane Scaffold for Tissue Engineering"],"prefix":"10.1038","volume":"6","author":[{"given":"Adriana P\u00e9triz","family":"Reyes","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ata\u00falfo","family":"Mart\u00ednez Torres","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ma. del Pilar","family":"Carre\u00f3n Castro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Rogelio","family":"Rodr\u00edguez Talavera","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Susana Vargas","family":"Mu\u00f1oz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"V\u00edctor Manuel Vel\u00e1zquez","family":"Aguilar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maykel Gonz\u00e1lez","family":"Torres","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2016,8,9]]},"reference":[{"key":"BFsrep31140_CR1","doi-asserted-by":"crossref","first-page":"1503","DOI":"10.1016\/S0079-6700(00)00035-6","volume":"25","author":"K Sudesh","year":"2000","unstructured":"Sudesh, K., Abe, H. & Doi, Y. 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