ROSA26 mice carry a modifier of Min-induced mammary and intestinal tumor development

ROSA26 mice carry a modifier of Min-induced mammary and intestinal tumor development B6.129S7-Gtrosa26 (B6.R26) mice carry a LacZ-neoR insertion on Chromosome (Chr) 6, made by promoter trapping with 129 ES cells. Female C57BL/6J Apc Min /+ (B6Min/+) mice are highly susceptible to intestinal tumors and to the induction of mammary tumors after treatment with ethylnitrosourea (ENU). However, B6.R26/+Min/+ females develop fewer mammary and intestinal tumors after ENU treatment than do B6 Min/+ mice. B6.R26/+ mice from two independently derived congenic lines show this modifier effect. Each of these congenic lines carries approximately 20 cM of 129-derived DNA flanking the insertion, raising the possibility that the resistance is due to a linked modifier locus. To further map the modifier locus, we have generated several lines of mice carrying different regions of the congenic interval. We have found that resistance to mammary and intestinal tumors in ENU-treated Min/+ mice maps to a minimum 4-cM interval that includes the ROSA26 LacZ-neoR insertion. Therefore, the resistance to tumor development is due to either the ROSA26 insertion or a very tightly linked modifier locus. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Mammalian Genome Springer Journals

ROSA26 mice carry a modifier of Min-induced mammary and intestinal tumor development

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Publisher
Springer-Verlag
Copyright
Copyright © 2000 by Springer-Verlag New York Inc.
Subject
Life Sciences; Cell Biology; Animal Genetics and Genomics; Human Genetics
ISSN
0938-8990
eISSN
1432-1777
D.O.I.
10.1007/s003350010208
Publisher site
See Article on Publisher Site

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