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Mostrando ítems 1-10 de 10
Artículo
What causes an RNA-DNA hybrid to compromise genome integrity?
(Elsevier, 2019)
Transcription is a source of genome instability that stimulates mutation and recombination. Part of the damage produced by transcription is mediated by R-loops, non-B DNA structures that normally form by the re-annealing ...
Artículo
The role of chromatin at transcription-replication conflicts as a genome safeguard
(Portland Press, 2021)
DNA replication ensures the correct copying of the genome and the faithful transfer of the genetic information to the offspring. However, obstacles to replication fork (RF) progression cause RF stalling and compromise ...
Artículo
The effect of atypical nucleic acids structures in DNA double strand break repair: a tale of R-loops and G-quadruplexes
(Frontiers Media S.A., 2021)
The fine tuning of the DNA double strand break repair pathway choice relies on different regulatory layers that respond to environmental and local cues. Among them, the presence of non-canonical nucleic acids structures ...
Artículo
The SWI/SNF chromatin remodeling complex helps resolve R-loop-mediated transcription–replication conflicts
(Springer Nature, 2021)
ATP-dependent chromatin remodelers are commonly mutated in human cancer. Mammalian SWI/SNF complexes comprise three conserved multisubunit chromatin remodelers (cBAF, ncBAF and PBAF) that share the BRG1 (also known as ...
Artículo
Activation-induced cytidine deaminase action is strongly stimulated by mutations of the THO complex
(National Academy of Sciences, 2007)
Activation-induced cytidine deaminase (AID) is a B cell enzyme essential for Ig somatic hypermutation and class switch recombination. AID acts on ssDNA, and switch regions of Ig genes, a target of AID, form R-loops that ...
Artículo
The SWI/SNF complex, transcription-replication conflicts and cancer: a connection with high therapeutic potential
(Taylor & Francis, 2021)
Genome instability is a hallmark of cancer. ATP-dependent chromatin remodelers are frequently altered in cancer. We have recently reported that the SWItch/Sucrose Non-Fermentable (SWI/SNF) complex protects the genome by ...
Artículo
A role for the Saccharomyces cerevisiae Rtt109 histone acetyltransferase in R-loop homeostasis and associated genome instability
(Genetics Society of America, 2022)
The stability of the genome is occasionally challenged by the formation of DNA-RNA hybrids and R-loops, which can be influenced by the chromatin context. This is mainly due to the fact that DNA-RNA hybrids hamper the ...
Artículo
BRCA2 promotes DNA-RNA hybrid resolution by DDX5 helicase at DNA breaks to facilitate their repair
(Wiley-Blackwell, 2021)
The BRCA2 tumor suppressor is a DNA double-strand break (DSB) repair factor essential for maintaining genome integrity. BRCA2-deficient cells spontaneously accumulate DNA-RNA hybrids, a known source of genome instability. ...
Artículo
RNA biogenesis and RNA metabolism factors as R-loop suppressors: a hidden role in genome integrity.
(Cold Spring Harbor Laboratory Press, 2024-07)
Genome integrity relies on the accuracy of DNA metabolism, but as appreciated for more than four decades, transcription enhances mutation and recombination frequencies. More recent research provided evidence for a previously ...
Artículo
Spontaneous deamination of cytosine to uracil is biased to the non-transcribed DNA strand in yeast
(Elsevier, 2023-06)
Transcription in Saccharomyces cerevisiae is associated with elevated mutation and this partially reflects enhanced damage of the corresponding DNA. Spontaneous deamination of cytosine to uracil leads to CG>TA mutations ...