TZAP overexpression induces telomere dysfunction and ALT-like activity in ATRX/DAXX-deficient cells.
TZAP overexpression induces telomere dysfunction and ALT-like activity in ATRX/DAXX-deficient cells.
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TZAP 过表达会诱导 ATRX/DAXX 缺陷细胞中的端粒功能障碍和 ALT 样活性。
DOI:
10.1016/j.isci.2023.106405
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发表时间:
2023
期刊:
影响因子:
5.8
通讯作者:
Karlseder,Jan
中科院分区:
文献类型:
--
作者:
Moreno,SaraPriego;Fusté,JavierMiralles;Kaiser,Melanie;Li,JuliaSuZhou;Nassour,Joe;Haggblom,Candy;Denchi,ErosLazzerini;Karlseder,Jan
The appropriate regulation of telomere length homeostasis is crucial for the maintenance of genome integrity. The telomere-binding protein TZAP has been suggested to regulate telomere length by promoting t-circle and c-circle excisions through telomere trimming, yet the molecular mechanisms by which TZAP functions at telomeres are not understood. Using a system based on TZAP overexpression, we show that efficient TZAP recruitment to telomeres occurs in the context of open telomeric chromatin caused by loss of ATRX/DAXX independently of H3.3 deposition. Moreover, our data indicate that TZAP binding to telomeres induces telomere dysfunction and ALT-like activity, resulting in the generation of t-circles and c-circles in a Bloom-Topoisomerase IIIα-RMI1-RMI2 (BTR)-dependent manner.
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通讯作者:
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DOI:
--
发表时间:
1990
期刊:
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