نتایج جستجو برای: tetraploidy

تعداد نتایج: 1945  

Journal: :Cancer research 2008
Christopher A Maxwell Markus C Fleisch Sylvain V Costes Anna C Erickson Arnaud Boissière Rishi Gupta Shraddha A Ravani Bahram Parvin Mary Helen Barcellos-Hoff

Radiation-induced genomic instability, in which the progeny of irradiated cells display a high frequency of nonclonal genomic damage, occurs at a frequency inconsistent with mutation. We investigated the mechanism of this nontargeted effect in human mammary epithelial cells (HMEC) exposed to low doses of radiation. We identified a centrosome-associated expression signature in irradiated HMEC an...

Journal: :Carcinogenesis 2006
Andrew J Olaharski Rita Sotelo Gilberto Solorza-Luna Maria E Gonsebatt Patricia Guzman Alejandro Mohar David A Eastmond

Chromosomal instability as manifested by increases in aneuploidy and structural chromosome aberrations is believed to play a critical role in the intermediate to late stages in the development of cervical malignancies. The current study was designed to determine the role of tetraploidy in the formation of aneuploidy and ascertain the occurrence of these alterations during the earlier stages of ...

Journal: :Journal of virology 2009
Jennifer Hein Sergei Boichuk Jiaping Wu Yuan Cheng Raimundo Freire Parmjit S Jat Thomas M Roberts Ole V Gjoerup

Simian virus 40 (SV40) large T antigen (LT) is a multifunctional protein that is important for viral replication and oncogenic transformation. Previously, infection of monkey or human cells with SV40 was shown to lead to the induction of DNA damage response signaling, which is required for efficient viral replication. However, it was not clear if LT is sufficient to induce the damage response a...

2017
Eigil Kjeldsen

Aneuploidy, the presence of an abnormal number of chromosomes in a cell, is one of the most obvious differences between normal and cancer cells. There is, however, debate on how aneuploid cells arise and whether or not they are a cause or a consequence of tumorigenesis. Further, it is important to distinguish aneuploidy (the "state" of the karyotype) from chromosomal instability (CIN; the "rate...

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