Publications by authors named "P A Avila-Lopez"

Article Synopsis
  • Topoisomerase I (TOP1) is a crucial enzyme that helps relieve DNA tension during transcription, but its regulatory mechanisms are not fully understood.* -
  • Recent research identified TOP1 as an RNA-binding protein (RBP) that binds primarily to mRNAs, using advanced techniques like eCLIP and UV-RIP-seq in human colon cancer cells.* -
  • The study reveals that RNA negatively affects TOP1's activity during transcription by demonstrating that RNA polymerase II's actions on genes hinder TOP1's function, suggesting a complex relationship between RNA and DNA stress management.*
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JOURNAL/nrgr/04.03/01300535-202419110-00033/figure1/v/2024-03-08T184507Z/r/image-tiff Dysregulation of G9a, a histone-lysine N-methyltransferase, has been observed in Alzheimer's disease and has been correlated with increased levels of chronic inflammation and oxidative stress. Likewise, microRNAs are involved in many biological processes and diseases playing a key role in pathogenesis, especially in multifactorial diseases such as Alzheimer's disease.

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DNA methylation is an epigenetic mechanism involving the transfer of a methyl group onto the C5 position of the cytosine to form 5-methylcytosine (5mC). In general, DNA methylation in cancer is associated with the repression of the expression of tumor suppressor genes (TSG) and the demethylation with the overexpression of oncogenes. DNA methylation was considered a stable modification for a long time, but in 2009, it was reported that DNA methylation is a dynamic modification.

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Breast Cancer (BC) was the most common female cancer in incidence and mortality worldwide in 2020. Similarly, BC was the top female cancer in the USA in 2022. Risk factors include earlier age at menarche, oral contraceptive use, hormone replacement therapy, high body mass index, and mutations in 1/2 genes, among others.

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A significant portion of the human proteome comprises RNA-binding proteins (RBPs) that play fundamental roles in numerous biological processes. In the last decade, there has been a staggering increase in RBP identification and classification, which has fueled interest in the evolving roles of RBPs and RBP-driven molecular mechanisms. Here, we focus on recent insights into RBP-dependent regulation of the epigenetic and transcriptional landscape.

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