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Mostrando ítems 11-20 de 191
Artículo
MutSβ regulates G4-associated telomeric R-loops to maintain telomere integrity in ALT cancer cells
(Elsevier, 2022)
Up to 15% of human cancers maintain their telomeres through a telomerase-independent mechanism, termed “alternative lengthening of telomeres” (ALT) that relies on homologous recombination between telomeric sequences. ...
Artículo
Structural polymorphism of amyloid fibrils in ATTR amyloidosis revealed by cryo-electron microscopy
(Nature Research, 2024-01-17)
ATTR amyloidosis is caused by the deposition of transthyretin in the form of amyloid fibrils in virtually every organ of the body, including the heart. This systemic deposition leads to a phenotypic variability that has ...
Artículo
Late rDNA Condensation Ensures Timely Cdc14 Release and Coordination of Mitotic Exit Signaling with Nucleolar Segregation
(Elsevier, 2017)
The nucleolus plays a pivotal role in multiple key cellular processes. An illustrative example is the regulation of mitotic exit in Saccharomyces cerevisiae through the nucleolar sequestration of the Cdc14 phosphatase. The ...
Artículo
miR-7 Modulates hESC Differentiation into Insulin-Producing Beta-like Cells and Contributes to Cell Maturation
(The American Society of Gene and Cell Therapy, 2018-09-07)
Human pluripotent stem cells retain the extraordinary capacity to differentiate into pancreatic beta cells. For this particular lineage, more effort is still required to stress the importance of developing an efficient, ...
Artículo
Elongation Factor TFIIS Prevents Transcription Stress and R-Loop Accumulation to Maintain Genome Stability
(Elsevier, 2019)
Although correlations between RNA polymerase II (RNAPII) transcription stress, R-loops, and genome instability have been established, the mechanisms underlying these connections remain poorly understood. Here, we used a ...
Artículo
Expression of TDRD9 in a subset of lung carcinomas by CpG island hypomethylation protects from DNA damage
(Impact Journals, 2018)
Tudor domain containing protein 9 (TDRD9) is a RNA helicase normally expressed in the germline, where it is involved in the biosynthesis of PIWI-interacting RNAs (piRNAs). Here, we show that TDRD9 is highly expressed in ...
Artículo
LRH-1 agonism favours an immune-islet dialogue which protects against diabetes mellitus
(Nature Publishing Group, 2018-04-16)
Type 1 diabetes mellitus (T1DM) is due to the selective destruction of islet beta cells by immune cells. Current therapies focused on repressing the immune attack or stimulating beta cell regeneration still have limited ...
Artículo
Break-induced RNA–DNA hybrids (BIRDHs) in homologous recombination: friend or foe?
(Wiley-Blackwell, 2023)
Double-strand breaks (DSBs) are the most harmful DNA lesions, with a strong impact on cell proliferation and genome integrity. Depending on cell cycle stage, DSBs are preferentially repaired by non-homologous end joining ...
Artículo
Transcription as a Threat to Genome Integrity
(Annual Reviews Inc., 2016)
Genomes undergo different types of sporadic alterations, including DNA damage, point mutations, and genome rearrangements, that constitute the basis for evolution. However, these changes may occur at high levels as a result ...
Artículo
The chromatin network helps prevent cancer-associated mutagenesis at transcription-replication conflicts
(Nature Research, 2023)
Genome instability is a feature of cancer cells, transcription being an important source of DNA damage. This is in large part associated with R-loops, which hamper replication, especially at head-on transcription-replication ...