Related Experiment Video
Updated: Feb 11, 2026
09:34
Identification of Growth Inhibition Phenotypes Induced by Expression of Bacterial Type III Effectors in Yeast
Published on: March 30, 2010
17.3K
MiR-27b Promotes Muscle Development by Inhibiting MDFI Expression
Lianjie Hou1, Jian Xu1, Yiren Jiao1
1National Engineering Research Center for Breeding Swine Industry, Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China.
Summary
MicroRNA-27b (miR-27b) promotes skeletal muscle regeneration by inhibiting MDFI, enhancing muscle satellite cell differentiation and aiding recovery from muscle injuries.
Area of Science:
- Muscle biology
- Molecular mechanisms of regeneration
- Biochemistry
Background:
- Skeletal muscle regeneration is crucial for maintaining function after injury.
- Muscle satellite cells are key players in muscle repair and development.
- Understanding regulatory mechanisms is vital for treating muscle injuries.
Purpose of the Study:
- To investigate the role of miR-27b in skeletal muscle regeneration.
- To identify the target gene of miR-27b involved in muscle development.
- To explore therapeutic strategies for muscle injury.
Main Methods:
- In vitro studies on pig muscle satellite cells (PSCs) using Edu staining, qRT-PCR, and Western blot.
- Bioinformatics analysis and dual-luciferase reporter assay to identify miR-27b targets.
- In vivo studies in mice to assess the impact on muscle regeneration.
Main Results:
- miR-27b inhibits PSC proliferation and promotes differentiation.
- MDFI was identified as a target gene of miR-27b, promoting proliferation and inhibiting differentiation.
- Interfering with MDFI expression enhanced muscle regeneration in mice.
Conclusions:
- miR-27b promotes myogenesis by targeting MDFI, highlighting a collaborative role of miRNAs and genes in muscle development.
- This finding offers potential for novel therapeutic approaches to muscle injury.
Related Concept Videos
02:40The Eukaryotic Promoter Region
18.9K
The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences. The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
18.9K
02:40The Eukaryotic Promoter Region
4.0K
4.0K
01:14Muscles for Facial Expressions
5.0K
The craniofacial muscles are a collection of approximately 20 thin skeletal muscles situated beneath the skin of the face and scalp. These muscles, primarily responsible for the vast array of human facial expressions, originate from the bones or fibrous structures of the skull and extend outwards to connect with the skin. While most skeletal muscles in the body are enveloped in thick fascia, facial muscles generally have a more delicate fascial covering, with the buccinator muscle being a...
5.0K
01:42What is Gene Expression?
197.0K
Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
197.0K
00:46Feedback Inhibition
57.3K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
57.3K
01:30Enzyme Inhibition
92.8K
Inhibitors are molecules that reduce enzyme activity by binding to the enzyme. In a normally functioning cell, enzymes are regulated by a variety of inhibitors. Drugs and other toxins can also inhibit enzymes. Some inhibitors bind to the enzyme’s active site, while others inhibit enzymatic activity by binding to other sites on the protein structure.
92.8K