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Wiedlocha, Antoni 85d7dca2-2e04-438b-a48c-25383ba5d1a6 500 Falnes, Pål 4569e194-c979-4863-8bf2-cf859a58e1d0 500 Rapak, Andrzej 43c19576-ba7f-479f-86db-80c29feb4951 500 Muñoz Martínez, Raquel 30d13e8260075711 500 0000-0001-9861-0349 Klingenberg, Olav beb612d1-7ec2-4437-950d-0b5f227040da 500 Olsnes, Sjur 55bbd5d8-e665-4d3b-81c9-c0c9eb0c2bbf 500 2020-06-08T13:15:28Z 2020-06-08T13:15:28Z 1996 Molecular and Cellular Biology, 1996, vol. 16, n. 1. p. 270-280 0270-7306 http://uvadoc.uva.es/handle/10324/41005 10.1128/MCB.16.1.270 Producción Científica U2OS Dr1 cells, originating from a human osteosarcoma, are resistant to the intracellular action of diphtheria toxin but contain toxin receptors on their surfaces. These cells do not have detectable amounts of fibroblast growth factor receptors. When these cells were transfected with fibroblast growth factor receptor 4, the addition of acidic fibroblast growth factor to the medium induced tyrosine phosphorylation, DNA synthesis, and cell proliferation. A considerable fraction of the cell-associated growth factor was found in the nuclear fraction. When the growth factor was fused to the diphtheria toxin A fragment, it was still bound to the growth factor receptor and induced tyrosine phosphorylation but did not induce DNA synthesis or cell proliferation, nor was any fusion protein recovered in the nuclear fraction. On the other hand, when the fusion protein was associated with the diphtheria toxin B fragment to allow translocation to the cytosol by the toxin pathway, the fusion protein was targeted to the nucleus and stimulated both DNA synthesis and cell proliferation. In untransfected cells containing toxin receptors but not fibroblast growth factor receptors, the fusion protein was translocated to the cytosol and targeted to the nucleus, but in this case, it stimulated only DNA synthesis. These data indicate that the following two signals are required to stimulate cell proliferation in transfected U2OS Dr1 cells: the tyrosine kinase signal from the activated fibroblast growth factor receptor and translocation of the growth factor into the cell. application/pdf eng American Society for Microbiology info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/ © 1996 American Society for Microbiology Attribution-NonCommercial-NoDerivs 3.0 Unported Osteosarcoma Tyrosine kinase Tirosina quinasa Growth factor Factor de crecimiento 2415 Biología Molecular 2407 Biología Celular Stimulation of proliferation of a human osteosarcoma cell line by exogenous acidic fibroblast growth factor requires both activation of receptor tyrosine kinase and growth factor internalization info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://mcb.asm.org/content/16/1/270 SI THUMBNAIL Stimulation-of-proliferation-of-human-osteosarcoma.pdf.jpg Stimulation-of-proliferation-of-human-osteosarcoma.pdf.jpg IM Thumbnail image/jpeg 4309 https://uvadoc.uva.es/bitstream/10324/41005/4/Stimulation-of-proliferation-of-human-osteosarcoma.pdf.jpg 6fb17727f7bf99418d93f484e41cad37 MD5 4 LICENSE license.txt license.txt text/plain 3926 https://uvadoc.uva.es/bitstream/10324/41005/3/license.txt 017313583e37a1e4d1253e1ef6c66c6c MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 817 https://uvadoc.uva.es/bitstream/10324/41005/2/license_rdf bb40ef9f1fe160072c35924bc4d018c4 MD5 2 ORIGINAL Stimulation-of-proliferation-of-human-osteosarcoma.pdf Stimulation-of-proliferation-of-human-osteosarcoma.pdf application/pdf 512264 https://uvadoc.uva.es/bitstream/10324/41005/1/Stimulation-of-proliferation-of-human-osteosarcoma.pdf 5744627adafe6ff339861bdf931a03ab MD5 1 10324/41005 oai:uvadoc.uva.es:10324/41005 2021-06-23 11:52:41.283 UVaDOC repositorio@uva.es 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