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Epigenetic regulation of bone mass
Elizabeth M Curtis1, Nicholas R Fuggle1, Cyrus Cooper2
1MRC Lifecourse Epidemiology Centre, University of Southampton, UK.
Best Practice & Research. Clinical Endocrinology & Metabolism
|February 5, 2022
Summary
Epigenetic factors like DNA methylation influence bone density and fracture risk. Understanding these mechanisms offers new diagnostic and therapeutic targets for osteoporosis.
Area of Science:
- Bone biology and epigenetics
- Genetics and public health
Background:
- Osteoporosis is a significant public health issue defined by low bone mass and increased fracture risk.
- Epigenetic processes, including DNA methylation and non-coding RNAs, are increasingly recognized for their role in bone mass regulation and fracture susceptibility.
- Environmental influences on gene expression via epigenetics contribute to variations in bone mineral density (BMD) and fracture risk throughout life.
Purpose of the Study:
- To review recent advancements in understanding epigenetic mechanisms regulating bone mass.
- To explore the role of epigenetics in osteoporosis development.
- To outline potential diagnostic and prognostic biomarker applications.
Main Methods:
- Review of current literature on epigenetics and bone health.
- Analysis of associations between epigenetic modifications and osteoporosis phenotypes.
- Examination of epigenome-wide association studies and multi-omics data.
Main Results:
- DNA methylation in utero, linked to maternal vitamin D status, is associated with BMD.
- Methylation of genes like OPG and RANKL is linked to osteoporosis.
- Epigenetic regulators such as histone acetyltransferases, deacetylases, and methylases are emerging as potential therapeutic targets.
Conclusions:
- Epigenetic mechanisms are crucial regulators of bone mass and osteoporosis development.
- Epigenetic modifications present promising avenues for novel diagnostic and prognostic biomarkers for osteoporosis.
- Targeting epigenetic pathways may offer new therapeutic strategies for managing osteoporosis.
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