MOS, aneuploidy and the ploidy cycle of cancer cells - PubMed (original) (raw)

Review

. 2010 Oct 7;29(40):5447-51.

doi: 10.1038/onc.2010.310. Epub 2010 Aug 2.

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• PMID: 20676137
• DOI: 10.1038/onc.2010.310

Review

MOS, aneuploidy and the ploidy cycle of cancer cells

J Erenpreisa et al. Oncogene. 2010.

Abstract

After DNA or spindle damage, p53-defective tumor cells undergo a complex cycle of reversible polyploidy. How this process occurs and more importantly, why, has recently become the focus of several research groups, prompting this review in which we discuss two related phenomena that accompany the reversible polyploidy of tumor cells: the induction of meiosis genes such as MOS and the decrease in genomic instability observed during the reversion from polyploidy to para-diploidy. The reversible polyploidy likely provides the means through which the balance between increased chromosome instability (CIN), driving genetic variation and decreased CIN, necessary for perpetuating these malignant clones, is maintained. These concepts are integrated with recent findings that many meiotic and self-renewal genes become activated during reversible polyploidy and lead us to the hypothesis that tumor cell immortality may be achieved through germline-like transmission.

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