Expression of miR-1, miR-133a, miR-133b and miR-206 increases during development of human skeletal muscle

A Koutsoulidou, NP Mastroyiannopoulos, D Furling, James B Uney, LA Phylactou

Research output: Contribution to journalArticle (Academic Journal)peer-review

103 Citations (Scopus)
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Abstract

Background

MicroRNAs (miRNAs) are small RNA molecules that post-transcriptionally regulate gene expression and have been shown to play an important role during development. miR-1, miR-133a, miR-133b and miR-206 are expressed in muscle tissue and induced during muscle cell differentiation, a process that directs myoblasts to differentiate into mature myotubes, which are organized into myofibers. Although miR-1, miR-133a, miR-133b and miR-206 are well-studied in muscle, there is no information about their expression and function during human development. The purpose of this study was to determine the profile of these miRNAs in muscle cells isolated from different stages of human development.

Results

We examined the levels of miR-1, miR-133a, miR-133b and miR-206 during the development of human foetus. All four miRNA levels were found increased during late stages of human foetal muscle development. Increases in the expression levels of these miRNAs were proportional to the capacity of myoblasts to form myotubes. Changes in miRNA levels during human foetal development were accompanied by endogenous alterations in their known targets and also in their inducer, MyoD. Ectopic MyoD expression caused an induction of muscle cell differentiation in vitro, accompanied by an increase in the levels of miR-1, miR-133a, miR-133b and miR-206.

Conclusions

This study provides data about the profile of four miRNAs in human muscle cells isolated during different stages of foetal development. These results may shed light on the differentiation of muscle cells and regulation of muscle formation through miRNAs, during the development of human foetus.
Translated title of the contributionExpression of miR-1, miR-133a, miR-133b and miR-206 increases during development of human skeletal muscle
Original languageEnglish
Article number34
Number of pages9
JournalBMC Developmental Biology
Volume11
DOIs
Publication statusPublished - 7 Jun 2011

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