In this issue of Neuron, Chai et al. (2021) analyze several families with neurodegeneration and marked pontocerebellar hypoplasia and microcephaly and identify recessive (bi-allelic) mutations in peptidyl-prolyl isomerase-like 1 (PPIL1) and pre-RNA-processing-17 (PPR17). PPIL1 patient mutation knockin mice develop neuronal apoptosis. Loss of either protein affects splicing predominantly involving GC-rich and short introns.
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http://dx.doi.org/10.1016/j.neuron.2020.12.021 | DOI Listing |
Aging Cell
January 2025
Temasek Life Sciences Laboratory, Singapore, Singapore.
Multimodal study of Alzheimer's disease (AD) dorsolateral prefrontal cortex (DLPFC) showed AD-related aberrant intron retention (IR) and proteomic changes not observed at the RNA level. However, the role of sex and how IR may impact the proteome are unclear. Analysis of DLPFC transcriptome showed a clear sex-biased pattern where female AD had 1645 elevated IR events compared to 80 in male AD DLPFC.
View Article and Find Full Text PDFhas been identified in human and mouse HD brain as the pathogenic exon 1 mRNA generated from aberrant splicing between exon 1 and 2 that contributes to aggregate formation and neuronal dysfunction (Sathasivam et al., 2013). Detection of the HTT exon 1 protein (HTTex1p) has been accomplished with surrogate antibodies in fluorescence-based reporter assays (MSD, HTRF), and immunoprecipitation assays, in HD postmortem cerebellum and knock-in mice but direct detection by SDS-PAGE and western blot assay has been lacking.
View Article and Find Full Text PDFEuroasian J Hepatogastroenterol
December 2024
Department of Gastroenterology and Metabology, Ehime University Graduate School of Medicine, Ehime, Japan.
Objectives: To predict and characterize the three-dimensional (3D) structure of protein arginine methyltransferase 2 (PRMT2) using homology modeling, besides, the identification of potent inhibitors for enhanced comprehension of the biological function of this protein arginine methyltransferase (PRMT) family protein in carcinogenesis.
Materials And Methods: An method was employed to predict and characterize the three-dimensional structure. The bulk of PRMTs in the PDB shares just a structurally conserved catalytic core domain.
MedComm (2020)
January 2025
Department of Oral and Maxillofacial Surgery Hospital of Stomatology Jilin University, Changchun Jilin province China.
RNA modifications are emerging as critical cancer regulators that influence tumorigenesis and progression. Key modifications, such as N6-methyladenosine (mA) and 5-methylcytosine (mC), are implicated in various cellular processes. These modifications are regulated by proteins that write, erase, and read RNA and modulate RNA stability, splicing, translation, and degradation.
View Article and Find Full Text PDFRNA
December 2024
Instiute of Bioorganic Chemistry PAS
In this article, we present an approach to maximizing the splicing regulatory properties of splice-switching oligonucleotide (SSO) designed to regulate alternative splicing of PKM pre-mRNA. The studied SSO interacts with the regulatory element in exon 10 of PKM pre-mRNA and contributes to a significant reduction of PKM2 level with a simultaneous increase of the PKM1 isoform. This SSO forms a duplex not only with the regulatory fragment of exon 10 but also with a similar RNA fragment of intron 9.
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