Methods for Efficient Immortalization Of Normal Human Cells
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United States of America Patent
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Aug 13, 2015
app pub date -
Oct 2, 2014
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Oct 2, 2013
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Abstract
Methods for inducing non-clonal immortalization of normal epithelial cells by directly targeting the two main senescence barriers encountered by cultured epithelial cells. In human mammary epithelial cells (HMEC), the stress-associated stasis barrier was bypassed and the replicative senescence barrier, a consequence of critically shortened telomeres, was bypassed in post-stasis HMEC. Early passage non-clonal immortalized lines exhibited normal karyotypes. Methods of efficient HMEC immortalization, in the absence of “passenger” genomic errors, should facilitate examination of telomerase regulation, immortalization during human carcinoma progression, and methods for screening for toxic and environmental effect on progression.
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