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N-methyladenosine (mA) is a chemical modification present in multiple RNA species, being most abundant in mRNAs. Studies on enzymes or factors that catalyze, recognize, and remove mA have revealed its comprehensive roles in almost every aspect of mRNA metabolism, as well as in a variety of physiological processes. This review describes the current understanding of the mA modification, particularly the functions of its writers, erasers, readers in RNA metabolism, with an emphasis on its role in regulating the isoform dosage of mRNAs.
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http://dx.doi.org/10.1038/s41422-018-0040-8 | DOI Listing |
J Immunother Cancer
September 2025
Department of Biochemistry and Molecular Genetics, The University of Alabama at Birmingham, Birmingham, Alabama, USA
RNA molecules are subject to extensive post-transcriptional modifications that fine-tune their stability, localization, and function. Among the more than 100 known RNA modifications, N6-methyladenosine (mA) is the most abundant internal mark on eukaryotic messenger RNAs. This dynamic modification is installed by methyltransferases ("writers"), removed by demethylases ("erasers"), and interpreted by RNA-binding proteins ("readers") to modulate gene expression.
View Article and Find Full Text PDFPeerJ
September 2025
Changzhou Hospital of Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Nanjing University of Traditional Chinese Medicine, Changzhou, China.
Background: Kidney disease is a major global health issue, causing numerous deaths and a loss of life years. This prompts us to explore potential targets or mechanisms that may increase the likelihood of diagnosing and treating kidney diseases. N6-methyladenosine (mA) modifications dynamically regulate RNA through "writer" enzymes, "eraser" enzymes, and "reader" proteins, influencing its processing, stability, and translation efficiency.
View Article and Find Full Text PDFbioRxiv
August 2025
Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School Boston, MA, USA.
N6-methyladenosine (m6A) is the most prevalent internal mRNA modification, enriched in the CNS yet poorly characterized in glioma. Using long-read RNA sequencing, we mapped m6A in an glioma model following knockdown (KD) of the reader IGF2BP2, writer METTL3, and eraser ALKBH5, with naive glioma cells and astrocytes as controls. Glioma cells exhibited a two-fold reduction in global m6A, suggesting progressive loss from healthy to malignant states.
View Article and Find Full Text PDFGenes (Basel)
August 2025
Department of Obstetrics and Gynecology, C. S. Mott Center for Human Growth and Development, Institute of Environmental Health Sciences, Wayne State University, Detroit, MI 48201, USA.
Messenger RNA (mRNA) modifications regulate key steps in gene expression, including splicing, translation, and stability. Despite over 300 known RNA modifications, the relatively small subset occurring in mRNA remains understudied compared with tRNA and rRNA. This review aims to systematically evaluate 15 known naturally occurring mRNA-specific modifications, rank them by publication frequency, and highlight emerging frontiers in epitranscriptomics, including discovering new naturally occurring mRNA modifications and environmental RNA (eRNA) epitranscriptomics.
View Article and Find Full Text PDFWorld J Mens Health
August 2025
School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
In the field of male health, disorders of the reproductive and urological systems present significant challenges. The global increase in male infertility, primarily attributed to environmental and lifestyle factors, along with the high incidence of urological cancers, not only places a significant socio-economic burden but also emphasizes the urgent need for in-depth research. Epigenetic modifications, especially N6-methyladenosine (m6A) methylation, are of great importance in these conditions.
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