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Landscape analysis of m6A modification reveals the dysfunction of bone metabolism in osteoporosis mice
Lifeng Zheng1,2, Chao Lan3, Xinyue Gao4
1Department of Orthopedics, the First Affiliated Hospital, Fujian Medical University, Fuzhou, 350005, China.
Abstract:
Osteoporosis (OP) is a prevalent chronic bone metabolic disorder that affects the elderly population, leading to an increased susceptibility to bone fragility. Despite extensive research on the onset and progression of OP, the precise mechanisms underlying this condition remain elusive. The m6A modification, a prevalent form of chemical RNA modification, primarily regulates posttranscriptional processes, including RNA stability, splicing, and translation. Numerous studies have underscored the crucial functions of m6A regulators in OP. This study aimed to explore the relationship between OP and RNA m6A methylation, investigating its underlying mechanisms through comprehensive bioinformatic analysis and experimental validation. The mRNA sequencing (mRNA-seq) and methylated RNA immunoprecipitation sequencing (MeRIP-seq) were performed on control mice as well as ovariectomized mice to discover differentially expressed genes (DEGs) and m6A regulators in OP. The results revealed dysregulation of a majority of bone metabolism-related genes and m6A regulators in ovariectomized mice, indicating a closely linked relationship between them. Our research findings indicated that m6A modification is essential in regulating OP, offering potential insights for prevention and treatment.
Insights
This study reveals that m6A RNA modification is crucial in osteoporosis (OP), a bone disorder. Dysregulation of m6A regulators in mice with OP suggests new therapeutic targets for bone fragility.
Area of Science:
- Biochemistry
- Molecular Biology
- Genetics
Background:
- Osteoporosis (OP) is a common metabolic bone disorder increasing bone fragility in the elderly.
- The exact mechanisms driving OP onset and progression require further elucidation.
- RNA N6-methyladenosine (m6A) modification regulates gene expression post-transcriptionally and is implicated in various diseases.
Purpose of the Study:
- To investigate the intricate relationship between RNA m6A methylation and osteoporosis.
- To explore the underlying molecular mechanisms of m6A modification in OP pathogenesis.
- To identify potential therapeutic targets for OP based on m6A regulatory pathways.
Main Methods:
- Performed mRNA sequencing (mRNA-seq) and methylated RNA immunoprecipitation sequencing (MeRIP-seq) in control and ovariectomized mouse models.
- Analyzed differentially expressed genes (DEGs) and m6A regulators associated with OP.
- Utilized bioinformatic analysis and experimental validation to understand m6A's role.
Main Results:
- Observed significant dysregulation of numerous bone metabolism-related genes in ovariectomized mice.
- Identified altered expression patterns of key m6A regulators in the OP model.
- Demonstrated a strong correlation between m6A modification and bone metabolism in the context of OP.
Conclusions:
- RNA m6A modification plays an essential role in the regulation of osteoporosis.
- Dysregulated m6A pathways are closely linked to bone metabolism changes in OP.
- Findings provide novel insights into OP prevention and treatment strategies targeting m6A modification.
