Related Experiment Video
Updated: Jun 11, 2026

A Reporter Assay to Analyze Intronic microRNA Maturation in Mammalian Cells
Published on: June 16, 2022
Alteration of processing induced by a single nucleotide polymorphism in pri-miR-126
Ratanakanit Harnprasopwat1, Daon Ha, Takae Toyoshima
1Division of Molecular Therapy, Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan.
None:
MicroRNAs (miRNAs) are small non-coding RNAs that inhibit expression of specific target genes at the post-transcriptional level. Sequence variations in miRNA genes, including pri-miRNAs, pre-miRNAs and mature miRNAs, could potentially influence the processing and/or target selection of miRNAs. In this study, we have found the single nucleotide polymorphism (SNP) at the twenty-fourth nucleotide (+24) of the mature miR-126 in the genome of RS4;11 cells, derived from a MLL-AF4 ALL patient. Through a series of in vivo analyzes, we found that this miR-126 SNP significantly blocks the processing of pri-miRNA to mature miRNA, as well as reduces miRNA-mediated translational suppression. Moreover, its frequency is different among races. Thus, our study emphasizes the importance of identifying new miRNA SNP and its contribution to miRNA biogenesis which is possible link to human genetic disease.
Related Concept Videos
MicroRNAs
MicroRNAs
Mutations
Mutations
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...
Single Nucleotide Polymorphisms-SNPs
piRNA - Piwi-interacting RNAs