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MicroRNAs in allergy and asthma
1Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila 19, 50411, Tartu, Estonia, ana.rebane@ut.ee.
Abstract:
microRNAs (miRNAs) are short, single-stranded RNA molecules that function together with the partner proteins and cause degradation of target mRNAs or inhibit their translation. A particular miRNA can have hundreds of targets; therefore, miRNAs cumulatively influence the expression of a large proportion of genes. The functions of miRNAs in human diseases have been studied since their discovery in mammalian cells approximately 12 years ago. However, the role of miRNAs in allergic disease has only very recently begun to be uncovered. The purpose of this review is to provide an overview of the functions of miRNAs involved in the development of allergic diseases. We describe here the functions of miRNAs that regulate Th2 polarization and influence general inflammatory and tissue responses. In addition, we will highlight findings about the functions of extracellular miRNAs as possible noninvasive biomarkers of diseases with heterogeneous phenotypes and complex mechanisms and briefly discuss advances in the development of miRNA-based therapeutics.
Insights
MicroRNAs (miRNAs) are key regulators of gene expression. This review explores their emerging roles in allergic diseases, including their function in inflammation and potential as biomarkers.
Area of Science:
- Molecular Biology
- Immunology
- Genetics
Background:
- MicroRNAs (miRNAs) are small RNA molecules regulating gene expression by targeting messenger RNAs (mRNAs).
- miRNAs influence a vast number of genes, impacting cellular functions and disease development.
- Their role in human diseases is increasingly recognized, with recent focus on allergic conditions.
Purpose of the Study:
- To review the functions of miRNAs in the development of allergic diseases.
- To highlight the role of miRNAs in regulating T-helper 2 (Th2) cell polarization and inflammation.
- To discuss extracellular miRNAs as potential noninvasive biomarkers and advances in miRNA-based therapeutics.
Main Methods:
- Literature review of studies on miRNA function in allergic diseases.
- Analysis of miRNA regulatory mechanisms in Th2 polarization and inflammatory responses.
- Examination of research on extracellular miRNAs and therapeutic strategies.
Main Results:
- miRNAs play significant roles in modulating Th2 immune responses central to allergies.
- Dysregulated miRNA expression is implicated in the pathogenesis of various allergic conditions.
- Extracellular miRNAs show promise as noninvasive biomarkers for allergic disease diagnosis and prognosis.
Conclusions:
- miRNAs are critical regulators in allergic disease development.
- Extracellular miRNAs offer a novel avenue for noninvasive diagnostics in allergy.
- Targeting miRNAs presents a promising therapeutic strategy for allergic diseases.
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