Dietary Selenium Regulates microRNAs in Metabolic Disease: Recent Progress

Area of Science:

• Biochemistry and Molecular Biology
• Nutritional Science
• Epigenetics

Background:

• Selenium (Se) is a vital trace element with a narrow safe range, leading to health issues in deficiency or excess.
• Low Se status is linked to cognitive decline, immune dysfunction, and increased mortality.
• Excess Se intake is associated with metabolic risks.

Purpose of the Study:

• To review Se metabolism and pathogenic mechanisms in Se-related diseases.
• To elucidate the role of microRNAs (miRNAs) in Se epigenetics and disease regulation.
• To clarify the regulatory interplay between Se, miRNAs, selenoproteins, and disease.

Main Methods:

• Literature review focusing on Se metabolism, disease links, and miRNA functions.
• Analysis of existing data on epigenetic regulation by dietary factors, specifically Se.
• Synthesis of information on miRNA-mediated regulation of selenoprotein expression.

Main Results:

• MicroRNAs (miRNAs) are identified as key regulators of environmental (dietary) interactions with genes.
• MiRNAs influence selenoprotein expression by targeting messenger RNAs.
• The epigenetic role of Se and miRNA-mediated mechanisms in Se-related diseases remain largely unclear.

Conclusions:

• Understanding Se-miRNA interactions is crucial for elucidating Se-related disease pathogenesis.
• Further research into Se epigenetics and miRNA regulation is warranted.
• Clarifying these mechanisms may offer novel therapeutic targets for Se-related conditions.