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Published on: June 15, 2018
microRNA inhibitors: Natural and artificial sequestration of microRNA
Li Tang1, Hong-Yan Chen1, Ning-Bo Hao1
1Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
Abstract:
MicroRNA (miRNAs) is post-transcriptional regulator of mRNA. However, the prevalence and activity of miRNA are regulated by other regulators. miRNA inhibitors are natural or artificial RNA transcripts that sequestrate miRNAs and decrease or even eliminate miRNA activity. Competing endogenous RNAs (ceRNAs) are natural and intracellular miRNA inhibitors that compete to bind to shared miRNA recognition elements (MREs) to decrease microRNA availability and relieve the repression of target RNAs. In recent years, studies have revealed that ceRNA crosstalk is involved in many pathophysiological processes and adds a new dimension to miRNA regulation. Artificial miRNA inhibitors are RNA transcripts that are synthesized via chemical and genetic methods. Artificial miRNA inhibitors can be used in miRNA loss-of-function research and gene therapies for certain diseases. In this review, we summarize the recent advances in the two different types of miRNA inhibitors.
Insights
MicroRNA (miRNA) inhibitors, including competing endogenous RNAs (ceRNAs) and artificial transcripts, regulate miRNA activity. This review summarizes advances in these two key types of miRNA inhibitors for research and therapy.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- MicroRNAs (miRNAs) are key post-transcriptional regulators of gene expression.
- miRNA activity is modulated by various regulatory mechanisms.
- miRNA inhibitors, both natural and artificial, play a crucial role in controlling miRNA function.
Purpose of the Study:
- To review recent advances in natural and artificial miRNA inhibitors.
- To highlight the role of competing endogenous RNAs (ceRNAs) in miRNA regulation.
- To discuss the applications of artificial miRNA inhibitors in research and therapeutics.
Main Methods:
- Literature review of studies on miRNA inhibitors.
- Analysis of mechanisms of action for ceRNAs and artificial inhibitors.
- Synthesis of information on pathophysiological roles and therapeutic potential.
Main Results:
- ceRNAs function as natural miRNA inhibitors by sequestering miRNAs.
- ceRNA crosstalk is implicated in various pathophysiological processes.
- Artificial miRNA inhibitors offer tools for miRNA loss-of-function studies and gene therapy.
Conclusions:
- miRNA inhibitors represent a significant area of research with therapeutic implications.
- Understanding ceRNA networks provides new insights into miRNA regulatory pathways.
- Artificial miRNA inhibitors hold promise for future gene-based medical treatments.
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