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Biotin-based Pulldown Assay to Validate mRNA Targets of Cellular miRNAs
Published on: June 12, 2018
Folate and microRNA: Bidirectional interactions
Emma L Beckett1, Martin Veysey2, Mark Lucock3
1School of Medicine and Public Health, The University of Newcastle, Australia.
Abstract:
Low folate status is linked to increased risk of a number of conditions, including developmental disorders, some cancers, neurodegenerative and cardiovascular diseases. Some of the mechanisms of these associations are known, but much remains to be elucidated. Aberrant microRNA (miRNA) profiles are also signatures of these conditions, and as such, the association between folate status and miRNA are now being investigated. Potential associations are bidirectional, with miRNA linked to regulation of folate-mediated pathways, and folate linked to modulation of miRNA expression. miRNA are short non-coding RNA, involved in post-transcriptional regulation of gene expression via complementary binding to mRNA. Evidence is emerging that links folate levels to the regulation of miRNA levels, and miRNA to the regulation of the expression of enzymes involved in folate mediated one carbon metabolism. One carbon metabolism is the source of methyl groups for methylation reactions, including DNA methylation and is important in DNA synthesis and repair. miRNA may be modulated by DNA methylation and other epigenetic mechanisms directly, or indirectly via modulation of upstream signalling pathways. As such, there may be bi-directional associations between folate status and miRNA profiles. miRNA may also act as biomarkers for diagnosis or prognosis of conditions associated with folate status.
Insights
Low folate status increases disease risk, with emerging evidence showing a bidirectional relationship between folate and microRNA (miRNA). Folate influences miRNA levels, while miRNAs regulate folate metabolism, impacting DNA methylation and cellular processes.
Area of Science:
- Biochemistry
- Molecular Biology
- Nutritional Science
Background:
- Low folate status is associated with increased risks of developmental disorders, cancers, neurodegenerative, and cardiovascular diseases.
- Aberrant microRNA (miRNA) profiles are characteristic of these conditions, prompting investigation into the folate-miRNA relationship.
Purpose of the Study:
- To investigate the bidirectional associations between folate status and microRNA (miRNA) profiles.
- To explore the role of miRNAs in regulating folate-mediated one-carbon metabolism and vice versa.
Main Methods:
- Review of emerging evidence linking folate levels to miRNA regulation.
- Examination of miRNA's role in modulating enzymes of folate-mediated one-carbon metabolism.
- Consideration of epigenetic mechanisms influencing miRNA expression and folate pathways.
Main Results:
- Evidence suggests folate levels can modulate miRNA expression.
- miRNAs are implicated in regulating enzymes crucial for one-carbon metabolism, including DNA methylation.
- Potential bidirectional interactions between folate status and miRNA profiles are indicated.
Conclusions:
- The interplay between folate status and miRNA profiles is complex and likely bidirectional.
- miRNAs may serve as potential biomarkers for diagnosing or predicting conditions linked to folate status.
- Understanding these interactions is crucial for elucidating disease mechanisms and developing therapeutic strategies.
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