Related Experiment Video
Updated: Apr 30, 2026
Single Myofiber Isolation and Culture from a Murine Model of Emery-Dreifuss Muscular Dystrophy in Early Post-Natal Development
Published on: July 1, 2020
A novel circ_0018483/miR-4310/ERRFI1 ceRNA axis in myasthenia gravis
Jie Lv1, Jing Liu1, Linyuan Zhang1
1Department of Neuroimmunology, Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.
Background:
Myasthenia gravis (MG) is one of the most prevalent disorder of the neuromuscular junction (NMJ). Non-coding RNAs regulate myoblast proliferation and differentiation.
Methods:
The differential expression of miRNAs was analysed by using RNA microarrays. Protein levels and gene expression were analysed by using Western blotting and quantitative real-time polymerase chain reaction. The interactions of miR-4310 with circ_0018483 or ERBB receptor feedback inhibitor 1 (ERRFI1) were assessed using dual-luciferase reporter assays. The expression and aggregation of acetylcholine receptors (AChRs) were observed and analysed by using immunofluorescence.
Results:
The expression of miR-4310 was downregulated in the whole blood of patients. circ_0018483 exhibited a sponge effect on miR-4310, and the inhibition of miR-4310 weakened AChR function. Additionally, miR-4310 targeted ERRFI1 and circ_0018483, and circ_0018483 affected the expression and aggregation of AChR by regulating miR-4310 and ERRFI1. circ_0018483 regulates the expression of ERRFI1 by targeting miR-4310, which in turn affects AChR expression and aggregation at the NMJ.
Conclusions:
We confirmed a novel circ_0018483/miR-4310/ERRFI1 ceRNA axis in MG. Our findings suggest novel AChR regulation and MG molecular mechanisms research avenues.
Related Concept Videos
01:22Myasthenia Gravis ll: Pathophysiology
01:20Myasthenia Gravis: Overview and Treatment
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which...
01:15Myasthenia Gravis: Diagnostic Tests
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...
01:26Chemical Synapses
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
01:26Chemical Synapses
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
01:28Disorders of the Skeletal Muscle
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...