As an important mechanism in the post-transcriptional regulation of eukaryotic gene expression, alternative polyadenylation (APA) plays a key role in biological processes such as cell proliferation and differentiation. However, the role and dynamic pattern of APA during metamorphosis are poorly understood. Here, RNA-seq data covering from the embryo to the maturation (16 time points) of were utilized. We identified 247 differentially expressed APA events between early and adult stages, and through fuzzy mean clustering analysis, we discovered five dynamic APA patterns. Among them, the gradual elongation of the 3'UTR is the major APA pattern that changes over time, and its genes are enriched in the pathways of protein and energy metabolism. Finally, we constructed mRNA-miRNA and PPI networks and detected several central miRNAs that may regulate development. Our results revealed the complex APA mechanisms in metamorphosis, shedding new light on post-transcriptional regulation of crustacean metamorphosis.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11275414 | PMC |
http://dx.doi.org/10.3390/genes15070837 | DOI Listing |
Sci Adv
January 2025
Department of Biostatistics and Health Data Science, School of Medicine, Indiana University, Indianapolis, IN 46202, USA.
Alzheimer's disease (AD) is the leading dementia among the elderly with complex origins. Despite extensive investigation into the AD-associated protein-coding genes, the involvement of noncoding RNAs (ncRNAs) and posttranscriptional modification (PTM) in AD pathogenesis remains unclear. Here, we comprehensively characterized the landscape of ncRNAs and PTM events in 1460 samples across six brain regions sourced from the Mount Sinai/JJ Peters VA Medical Center Brain Bank Study and Mayo cohorts, encompassing 33,321 long ncRNAs, 92,897 enhancer RNAs, 53,763 alternative polyadenylation events, and 900,221 A-to-I RNA editing events.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Emory University School of Medicine, Atlanta, GA, USA.
Background: Circular RNAs (circRNAs) play multifaceted roles to precisely control expression of broad gene networks. These highly stable molecules are often accumulated in the mammalian brain and thought to serve as "memory molecules" that govern the long process of aging. Mounting evidence demonstrated circRNA dysregulation in the postmortem brains of Alzheimer's disease (AD).
View Article and Find Full Text PDFFront Biosci (Schol Ed)
December 2024
Department of Molecular, Cell and Cancer Biology, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA.
Background: Alternative cleavage and polyadenylation (APA) is a crucial post-transcriptional gene regulation mechanism that regulates gene expression in eukaryotes by increasing the diversity and complexity of both the transcriptome and proteome. Despite the development of more than a dozen experimental methods over the last decade to identify and quantify APA events, widespread adoption of these methods has been limited by technical, financial, and time constraints. Consequently, APA remains poorly understood in most eukaryotes.
View Article and Find Full Text PDFJ Transl Med
December 2024
Department of Breast Surgery, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, 310000, Zhejiang, China.
Background: Aberrant alternative splicing (AS) contributes to tumor progression. A crucial component of AS is cleavage and polyadenylation specificity factor 4 (CPSF4). It remains unclear whether CPSF4 plays a role in triple-negative breast cancer (TNBC) progression through AS regulation.
View Article and Find Full Text PDFAnn Med
December 2025
Department of Breast Surgery, Second Affiliated Hospital and Cancer Institute (Provincial Key Laboratory of Tumor Microenvironment and Immunotherapy, Key Laboratory of Cancer Prevention & Intervention, National Ministry of Education), Zhejiang University School of Medicine, Hangzhou, China.
Background: Quaking (QKI) is a member of the signal transduction and activators of RNA (STAR) family, performing a crucial multifunctional regulatory role in alternative splicing, mRNA precursor processing, mRNA transport and localization, mRNA stabilization, and translation during tumour progression. Abnormal QKI expression or fusion mutations lead to aberrant RNA and protein expression, thereby promoting tumour progression. However, in many types of tumour, QKI played a role as tumour suppressor, the regulatory role of QKI in tumour progression remains ambiguous.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!