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Orvosi Hetilap
Authors: Bálint Tóbiás, Bernadett Balla, János Kósa P., János Horányi, István Takács, Eszter Bölöny, Csaba Halászlaki, Zsolt Nagy, Gábor Speer, Balázs Járay, Eszter Székely, Roland Istók and Péter Lakatos

1167 1214 Malumbres, M., Barbacid, M.: RAS oncogenes: the first 30 years. Nat. Rev. Cancer, 2003, 3 , 459–465. Barbacid M

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: Characterization and chromosome assignment of the human homolog of int-2, a potential oncogene. Mol Cell Biol 6, 502–510 (1986) Dickson C Characterization and chromosome assignment of the human

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oncogene product latent membrane protein 1 engages the tumor necrosis factor receptor-associated death domain protein to mediate B-lymphocyte growth transformation and activate NG-kappaB. Proc. Natl Acad. Sci. USA, 94 , 12592–12597 (1997

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of hepatocellular carcinoma in areas of low hepatitis B and hepatitis C endemicity. Oncogene, 2006, 25 , 3771–3777. Hoofnagle J. H. Epidemiology of hepatocellular carcinoma in

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cells characterized by constitutive activation of ras proto-oncogene. J Biol Chem 276 , 29226-29232 (2001). Down-regulation of lysyl oxidase-induced tumorigenic transformation in NRK-49F cells characterized by constitutive

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Acta Alimentaria
Authors: F. Budán, I. Szabó, Á. Ember, Ő. Horváth, L. Illényi, Zs. Orsós, A. Blasio, I. Magda, T. Gracza, P. Perjési, T. Dávid, G. Nowrasteh and I. Ember

.P. & Ember, I. (2008): Oncogene and tumor suppressor gene expression changes in the peripheral blood leukocytes of patients with colorectal cancer. Tumori , 94 , 79–82. Ember I. Oncogene

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Orvosi Hetilap
Authors: Gábor Lendvai, András Kiss, Ilona Kovalszky and Zsuzsa Schaff

15 5633 5640 Zhang, B., Pan, X., Cobb, G. P., et al.: MicroRNAs as oncogenes and tumor suppressors. Dev. Biol., 2007, 302 , 1

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Orvosi Hetilap
Authors: Orsolya Galamb, Balázs Győrffy, Ferenc Sipos, Sándor Spisák, Anna Mária Németh, Pál Miheller, Elek Dinya, Béla Molnár and Zsolt Tulassay

Bertucci, F., Salas, S., Eysteries, S. és mtsai: Gene expression profiling of colon cancer by DNA microarrays and correlation with histoclinical parameters. Oncogene, 2004, 23 , 1377–1391. Eysteries S

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oncogenes. The first 30 years Nat Rev Cancer 3 459 465 . 56. Á Mayer 2001

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In this review, we discuss the developments of fluorescence in situ hybridization (FISH) and place them in the context of their applications in cancer research. These methods are not only very useful for the causal analysis of the development and spread of certain tumors, they are also efficient tools for tumor diagnosis. Although a review of all of the literature in this field is not possible here, many of the major contributions are summarized along with recent work from our laboratory. Our group contributes to the goal of functional identification of tumor growth antagonizing genes. FISH and molecular analyses have shown that the short arm of human chromosome 3 is frequently deleted in kidney, lung, breast, uterus, testis and ovary carcinomas. Deletion-mapping studies have outlined several separate deletion prone regions in different tumors, namely 3pter-p25, p22-p21.3, p21.1-p14 and p14-p12, which may contain putative tumor suppressor genes (TSGs). Candidate suppressor genes isolated from frequently deleted regions need to be assayed for possible tumor-antagonizing ability by functional tests. We have developed a functional test system, the microcell hybrid (MCH) based "elimination test” (Et). The Et is based on the introduction of a single human chromosome into tumor cells of human or murine origin, via microcell fusion. The MCHs were analyzed by FISH painting and PCR for the elimination or retention of specific human chromosome 3 (chr. 3) regions after one or several passages in severe combined immune-deficient (SCID) mice. We have defined a common eliminated region (CER) on chr. 3p2I.3. CER is approximately 1 megabase (Mb) in size. We have covered this region with PACs (bacteriophage PI based artificial chromosome) and used FISH mapping for localization and ordering PACs and cosmids on the chromosome 3 and high-resolution free chromatin/DNA fiber FISH to orient the PAC contig, to measure the lengths of PACs, and to establish their order. Activation of cellular oncogene by chromosomal translocation, which brings an oncogene under the influence of a highly active chromosome region, appears to play a pivotal role in the genesis of certain hematopoetic and lymphoid tumors. We have detected specific chromosomal translocations by FISH painting in mouse plasmacytoma (MPC), human Burkitt lymphoma (BL) and other B-cell derived tumors. We have showed in a murine sarcoma derived line (SEWA) that FISH can also be used for detection of amplified oncogene (c-myc) and the linked locus (pvt-1). We have also applied the FISH technique for visualization of integrated and episomal Epstein-Barr virus (EBV) genomes and EBV transcripts in EBV-carrying B-cell derived human cell lines.

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