Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Binding of wild-type and mutant forms of P53 protein from human tumors to a specific DNA sequence of the first intron of the H-ras oncogene
Δημιουργός/Συγγραφέας:	[EL] Ζουμπουρλής, Βασίλης[EN] Zoumpourlis, Vassilis Zachos, G. Halazonetis, T. D. Ergazaki, M. [EL] Σπαντίδος, Δημήτριος Α.[EN] Spandidos, Demetrios A.
Εκδότης:	Demetrios A. Spandidos Ed. & Pub.
Ημερομηνία:	1995
Γλώσσα:	Αγγλικά
ISSN:	1019-6439
Περίληψη:	p53 is the most frequent target for genetic alterations in a wide variety of human cancers. The product of the p53 tumor suppressor gene binds to DNA and activates transcription from promoters containing its consensus binding site. In the accompanying paper we have found that P53 tumor suppressor protein recognizes specifically a transcriptional element within the human H-ras protooncogene (Spandidos DA, et al, Int J Oncol 7: 1029-1034, 1995). We transfected Saos-2 cells, which arep53-null cells, with plasmids encoding for the wild type (wt) and for one 'hot spot' mutant (mt) of the p53 gene (H 273). Using the resulted nuclear extracts for gel retardation assays, we showed binding of both the wild-type and the mutant form of p53 to the Η-ras DNA. Furthermore, using nuclear extracts from head and neck tumors and from adjacent normal tissues in gel retardation assays, we found binding of both the wildtype and the p53 mutant in the same responsive element of the H-ras oncogene. These experimental results suggest a direct role of p53 in regulation of Η-ras. Identification of cellular proto-oncogenes as mediators of the transcriptional effects of wild-type and mutant forms of p53 gene, will be a step towards a better understanding of the role of oncogenes and onco-suppressor genes in tumor promotion.
Τίτλος πηγής δημοσίευσης:	International Journal of Oncology
Τόμος/Κεφάλαιο:	7
Τεύχος:	5
Σελίδες:	1035-1041
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
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ΙΒΦΧΒ: αρχειακή συλλογή:	Ινστιτούτο Βιολογικών Ερευνών και Βιοτεχνολογίας (ΙΒΕΒ) (έως 2012)
Εμφανίζεται στις συλλογές:	Ινστιτούτο Χημικής Βιολογίας - Επιστημονικό έργο