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Long non-coding TRPM2-AS regulates fracture healing by targeting miR-545-3p/Bmp2

  • 0Department of Orthopedics, Peking University First Hospital Taiyuan Hospital, Taiyuan, 030000, China.
Journal of Orthopaedic Surgery and Research +

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August 8, 2024

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August 8, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Long non-coding RNA (lncRNA) TRPM2-AS is downregulated in delayed fracture healing, impacting osteoblast function. Restoring TRPM2-AS may improve fracture healing by modulating the miR-545-3p/Bmp2 pathway.

Area Of Science

  • Molecular Biology
  • Orthopedics
  • Biochemistry

Background

  • Delayed fracture healing poses significant challenges to patient recovery and well-being.
  • Understanding the molecular mechanisms underlying delayed fracture healing is crucial for developing effective therapeutic strategies.

Purpose Of The Study

  • To investigate the role of long non-coding RNA (lncRNA) TRPM2-AS in delayed fracture healing.
  • To elucidate the molecular pathway involving TRPM2-AS, microRNA-545-3p (miR-545-3p), and bone morphogenetic protein 2 (Bmp2) in osteoblast differentiation and fracture healing.

Main Methods

  • Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was used to measure the expression of TRPM2-AS, miR-545-3p, Bmp2 mRNA, and osteogenic markers in patients and cells.
  • Dual luciferase reporter gene assays were performed to confirm the interaction between TRPM2-AS, miR-545-3p, and Bmp2.
  • Cell proliferation and apoptosis were assessed using CCK-8 assays and flow cytometry.

Main Results

  • TRPM2-AS was significantly downregulated in delayed fracture healing patients and negatively correlated with fracture healing status.
  • TRPM2-AS downregulation suppressed osteogenic marker expression, proliferation, and promoted apoptosis in MC3T3-E1 cells.
  • TRPM2-AS inhibited miR-545-3p, which targets Bmp2, thereby impacting osteoblast differentiation.

Conclusions

  • TRPM2-AS serves as a potential diagnostic biomarker for delayed fracture healing.
  • The TRPM2-AS/miR-545-3p/Bmp2 axis plays a critical role in regulating osteoblast function and fracture healing.

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