Nuclear envelope tethering inhibits the formation of ALT-associated PML bodies in ALT cells
نویسندگان
چکیده
منابع مشابه
TRF1 phosphorylation on T271 modulates telomerase-dependent telomere length maintenance as well as the formation of ALT-associated PML bodies
TRF1, a component of the shelterin complex, plays a key role in both telomerase-dependent telomere maintenance and alternative lengthening of telomeres, the latter also known as ALT. Characteristics of ALT cells include C-circles and ALT-associated PML bodies, referred to as APBs. The function of TRF1 is tightly regulated by post-translational modification including phosphorylation, however TRF...
متن کاملALT-associated PML bodies are present in viable cells and are enriched in cells in the G(2)/M phase of the cell cycle.
Telomere maintenance is essential for the unlimited proliferative potential of human cells, and hence immortalization. However, a number of tumors, tumor-derived cell lines and in vitro immortalized cell lines have been described that do not express detectable telomerase activity. These lines utilize a mechanism, termed Alternative Lengthening of Telomeres (ALT), to provide telomere maintenance...
متن کاملLack of TRF2 in ALT cells causes PML-dependent p53 activation and loss of telomeric DNA
Alternative lengthening of telomere (ALT) tumors maintain telomeres by a telomerase-independent mechanism and are characterized by a nuclear structure called the ALT-associated PML body (APB). TRF2 is a component of a telomeric DNA/protein complex called shelterin. However, TRF2 function in ALT cells remains elusive. In telomerase-positive tumor cells, TRF2 inactivation results in telomere de-p...
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Nuclear receptors bind chromosome ends in "alternative lengthening of telomeres" (ALT) cancer cells that maintain their ends by homologous recombination instead of telomerase. Marzec et al. now demonstrate that, in ALT cells, nuclear receptors not only trigger distal chromatin associations to mediate telomere-telomere recombination events, but also drive chromosome-internal targeted telomere in...
متن کاملPML nuclear bodies.
PML nuclear bodies are matrix-associated domains that recruit an astonishing variety of seemingly unrelated proteins. Since their discovery in the early 1960s, PML bodies have fascinated cell biologists because of their beauty and their tight association with cellular disorders. The identification of PML, a gene involved in an oncogenic chromosomal translocation, as the key organizer of these d...
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ژورنال
عنوان ژورنال: Aging
سال: 2021
ISSN: 1945-4589
DOI: 10.18632/aging.202810