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Published on: April 21, 2023
Emerging mechanisms of elastin transcriptional regulation
Sara S Procknow1, Beth A Kozel2
1Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri.
Insights
Elastin is crucial for stretching tissues, but its production is limited. Understanding elastin (ELN) gene regulation is key to treating related disorders and age-related decline.
Area of Science:
- Biochemistry
- Molecular Biology
- Genetics
Background:
- Elastin provides essential recoil to tissues like lungs, blood vessels, and skin.
- Elastin deposition occurs during development and has slow turnover, leading to insufficiency in conditions like Williams-Beuren syndrome.
- The regulation of the elastin (ELN) gene involves complex multi-level mechanisms that are not fully understood.
Purpose of the Study:
- To review current knowledge on elastin (ELN) gene expression regulation.
- To highlight novel approaches for regenerative medicine related to elastin production.
Main Methods:
- Review of existing literature on ELN gene promoter structure.
- Analysis of transcriptional regulation by cytokines and transcription factors.
- Examination of posttranscriptional regulation, including mRNA stability and microRNA interactions.
Main Results:
- The review details the known aspects of ELN gene promoter structure.
- It summarizes transcriptional control by various factors and cytokines.
- Posttranscriptional regulatory mechanisms involving mRNA stability and microRNAs are discussed.
Conclusions:
- A comprehensive understanding of ELN gene regulation is incomplete.
- Further research into these mechanisms can inform treatments for rare elastin-related disorders.
- Insights may enable strategies to restore elastin production for age-related tissue degeneration and regenerative medicine.
Abstract:
Elastin provides recoil to tissues that stretch such as the lung, blood vessels, and skin. It is deposited in a brief window starting in the prenatal period and extending to adolescence in vertebrates, and then slowly turns over. Elastin insufficiency is seen in conditions such as Williams-Beuren syndrome and elastin-related supravalvar aortic stenosis, which are associated with a range of vascular and connective tissue manifestations. Regulation of the elastin (ELN) gene occurs at multiple levels including promoter activation/inhibition, mRNA stability, interaction with microRNAs, and alternative splicing. However, these mechanisms are incompletely understood. Better understanding of the processes controlling ELN gene expression may improve medicine's ability to intervene in these rare conditions, as well as to replace age-associated losses by re-initiating elastin production. This review describes what is known about the ELN gene promoter structure, transcriptional regulation by cytokines and transcription factors, and posttranscriptional regulation via mRNA stability and micro-RNA and highlights new approaches that may influence regenerative medicine.
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