Murine pancreatic tumor cell line td2 bears the characteristic pattern of genetic changes with two independently amplified gene loci

Murine pancreatic tumor cell line td2 bears the characteristic pattern of genetic changes with two independently amplified gene loci

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ABSTRACT TGF_α_/p53+/− transgenic mice represent a genetically engineered mouse model for pancreatic adenocarcinoma. The tumors develop a characteristic pattern of secondary genetic changes.


From one of these tumors, the permanent cell line TD2 was established. Here, we describe in detail the genetic changes by molecular–cytogenetic techniques. The original tumor-specific CGH


profile has been retained unchanged. The most characteristic aberration pattern bears chromosome 11. _Egfr_, localized on proximal chromosome 11, is amplified two to three times and leads to


an easily identifiable, stable marker chromosome with a large amplification unit, which is present in each metaphase. The wild-type _p53_ gene on distal chromosome 11 is lost. The


_p16__Ink4a_ locus on chromosome 4 is hypermethylated. For _c-Myc_ a 15-fold amplification, present in a 1.65 Mb amplification unit, is detected on chromosome 15. Transition between presence


in the form of several double minutes, DMs, or a single homogeneously staining region, HSR, was observed for _c-Myc_. Molecular–cytogenetic analysis of both amplification units show that


_Egfr_ amplification and _c-Myc_ amplification represent two alternative modes by which genes get amplified in tumor cells. The expression level of the respective genes was proven by


Northern blot analysis. The cell line TD2 represents a valuable _in vitro_ model for pancreatic adenocarcinoma. Access through your institution Buy or subscribe This is a preview of


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COMBINED DELETION OF MEN1, ATRX AND PTEN TRIGGERS DEVELOPMENT OF HIGH-GRADE PANCREATIC NEUROENDOCRINE TUMORS IN MICE Article Open access 12 April 2024 REFERENCES * Bardeesy N, Morgan J,


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Renard CA, Apiou F, Huerre M, Tiollais P, Dutrillaux B and Buendia MA . (2002). _Oncogene_, 21, 1518–1526. Download references ACKNOWLEDGEMENTS We thank Antje Kollak, Alexandra Kilian and


Beate Knobl for excellent technical assistance. This work was supported by grants from the Deutsche Forschungsgemeinschaft SFB 518 (Teilprojekt B6) and IZKF Ulm (Teilprojekt C4) to RMS.


AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Human Genetics, University of Ulm, Ulm, D-89069, Germany Bettina Schreiner & Horst Hameister * Department of Pharmacology,


University of California, San Diego, La Jolla, 92093-0636, CA, USA Florian R Greten * Department of Internal Medicine II, Technical University of Munich, Munich, D-81675, Germany Florian R


Greten & Roland M Schmid * Department of Internal Medicine I, University of Ulm, Ulm, D-89069, Germany Dorotthe M Baur, Alexander A Fingerle, Ulrich Zechner & Roland M Schmid *


Institute of Human Genetics, University of Würzburg, Würzburg, D-97074, Germany Christian Böhm & Michael Schmid Authors * Bettina Schreiner View author publications You can also search


for this author inPubMed Google Scholar * Florian R Greten View author publications You can also search for this author inPubMed Google Scholar * Dorotthe M Baur View author publications You


can also search for this author inPubMed Google Scholar * Alexander A Fingerle View author publications You can also search for this author inPubMed Google Scholar * Ulrich Zechner View


author publications You can also search for this author inPubMed Google Scholar * Christian Böhm View author publications You can also search for this author inPubMed Google Scholar *


Michael Schmid View author publications You can also search for this author inPubMed Google Scholar * Horst Hameister View author publications You can also search for this author inPubMed 


Google Scholar * Roland M Schmid View author publications You can also search for this author inPubMed Google Scholar CORRESPONDING AUTHOR Correspondence to Roland M Schmid. RIGHTS AND


PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Schreiner, B., Greten, F., Baur, D. _et al._ Murine pancreatic tumor cell line TD2 bears the characteristic pattern


of genetic changes with two independently amplified gene loci. _Oncogene_ 22, 6802–6809 (2003). https://doi.org/10.1038/sj.onc.1206836 Download citation * Received: 11 April 2003 * Revised:


02 June 2003 * Accepted: 02 June 2003 * Published: 02 October 2003 * Issue Date: 02 October 2003 * DOI: https://doi.org/10.1038/sj.onc.1206836 SHARE THIS ARTICLE Anyone you share the


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Nature SharedIt content-sharing initiative KEYWORDS * murine pancreatic tumor cell line * _c-Myc_ and _Egfr_ amplification * _p53_ deletion * _p16__Ink4a_ hypermethylation