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Circular RNA (circRNA) is a non-coding molecule produced through alternative splicing of one or more exons of a gene in the presence of an RNA-induced silencing complex (RISC). Its formation depends on complementary intron sequences on both sides of the circularized sequence. CircRNA functions as a sponge for miRNA, playing the role of the transcriptional regulator or potential biomarker. It has an impact on fetal growth and on synaptic facilitation in the brain. In this review, we illustrate biogenesis mechanisms, characteristics, and functions of cirRNAs. We also summarize methods using sequence feature and RNA next-generation sequencing data for circRNA prediction. Finally, we discuss the state of the research on circRNA in diseases, which will bring new contributions to future disease treatments.
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http://dx.doi.org/10.2174/1389202922666210331130722 | DOI Listing |
Zhonghua Nan Ke Xue
August 2025
Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China.
Male reproductive disorders have emerged as a global issue. Infertility affects 8% to 12% of couples of childbearing age. The sperm concentration and total sperm count of men have shown a significant downward trend over the past four decades, with a decrease of more than 50%.
View Article and Find Full Text PDFInt J Mol Med
November 2025
School of Medical Technology, Gannan Medical University, Ganzhou, Jiangxi 341000, P.R. China.
Atherosclerosis is a chronic and progressive vascular disease involving the gradual accumulation of lipids, cholesterol, cellular debris, and fibrous elements within the arterial wall. This process leads to the thickening and hardening of arteries, resulting in restricted blood flow and reduced oxygen delivery to tissues. Over time, these pathological changes significantly elevate the risk of life‑threatening cardiovascular events, including myocardial infarction and ischemic stroke.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2025
Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
CRISPR/Cas systems have transformed genome editing, yet achieving precise temporal and conditional control remains challenging. Traditional strategies involving linear guide RNAs (gRNAs) modified with multiple chemical groups throughout their strands often face limitations such as heterogeneous reaction outcomes, irreversibility, and variable editing efficiencies. To overcome these issues, topology-engineered guide RNAs (TE-gRNAs) have emerged, featuring defined structural architectures including polymeric, circular, and dendrimer-like topologies that enable precise spatial control, reversibility, and programmable activation of CRISPR activity.
View Article and Find Full Text PDFBiochem Pharmacol
September 2025
School of Medicine, Nantong University, Nantong 226001, China. Electronic address:
Despite advancements in cancer therapy, including radiotherapy and chemotherapy, resistance to cancer treatment remains a significant clinical challenge. Metabolic reprogramming and dysfunctional glycolysis, a defining characteristic of cancer cells, are commonly observed in drug-resistant cancer cells. Besides glycolytic enzymes, several signaling molecules-including EGFR, HIF-1α, AMPK, and β-catenin-are involved in the regulation of glycolysis and play crucial roles in mediating resistance to cancer therapy.
View Article and Find Full Text PDFCell Death Dis
September 2025
Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention, Department of Pathology, Shenzhen University Health Science Center, Shenzhen, Guangdong, PR China.
Gastric cancer (GC) is one of the most common and lethal malignancies in developing countries, with particularly high prevalence in China. Circular RNAs (circRNAs) have garnered increasing attention for their roles in disease pathogenesis. While circRNAs can be translated, there have been few investigations into the biological functions of "translatable circRNAs" in the initiation and progression of gastric adenocarcinoma.
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