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Functional mechanism and clinical implications of mir-1271-5p in pilon fracture healing processes
Zhihan Zhang1, Li Wang2, Fangyuan Zhang3
1Department of Orthopaedic Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
Background:
Pilon fractures are challenging to treat and carry a risk of delayed healing. MicroRNA (miRNA) is closely associated with various diseases due to its ability to regulate gene expression. Consequently, this study aimed to examine the connection between miR-1271-5p expression levels and pilon fracture healing processes, while also exploring the underlying mechanisms. The objective of this research was to provide valuable insights for the future clinical treatment of pilon fractures.
Materials:
Venous blood samples were obtained for RNA extraction from patients with normal healing (n = 107) or delayed healing (n = 45) of pilon fractures. The expression levels of miR-1271-5p were measured using qRT-PCR. MiR-1271-5p and ZBTB7A biological functions in MC3T3-E1 cells were examined using the Cell Counting Kit-8 (CCK-8), flow cytometry, and qRT-PCR. Finally, an investigation into the underlying mechanisms was carried out using a dual luciferase reporter assay.
Results:
This study found that, compared to those who healed normally, patients who experienced delayed healing of pilon fractures had significantly higher expression of miR-1271-5p. This suggests that miR-1271-5p may be an indicator for delayed healing in pilon fractures. Moreover, the upregulation of miR-1271-5p may result in a reduction of ZBTB7A expression, which is thought to mediate the effects of miR-1271-5p on MC3T3-E1 cell activities.
Conclusions:
MiR-1271-5p was involved in the healing processes of pilon fractures via targeting ZBTB7A. MiR-1271-5p was a possible target for the therapy of pilon fractures.
Insights
Elevated miR-1271-5p levels indicate delayed pilon fracture healing. This microRNA targets ZBTB7A, suggesting a potential therapeutic strategy for improving fracture repair outcomes.
Area of Science:
- Orthopedics
- Molecular Biology
- Biochemistry
Background:
- Pilon fractures present significant treatment challenges, often leading to delayed healing.
- MicroRNAs (miRNAs) play a crucial role in regulating gene expression and are implicated in various disease processes.
- Understanding the role of specific miRNAs in fracture healing is essential for developing effective treatments.
Purpose of the Study:
- To investigate the association between miR-1271-5p expression and pilon fracture healing.
- To explore the underlying molecular mechanisms by which miR-1271-5p influences fracture healing.
- To identify potential therapeutic targets for improving pilon fracture repair.
Main Methods:
- Quantitative real-time PCR (qRT-PCR) was used to measure miR-1271-5p expression in patients with normal versus delayed pilon fracture healing.
- Cellular assays (CCK-8, flow cytometry) were performed to assess the biological functions of miR-1271-5p and ZBTB7A in MC3T3-E1 cells.
- A dual luciferase reporter assay was employed to elucidate the interaction between miR-1271-5p and ZBTB7A.
Main Results:
- Patients with delayed pilon fracture healing exhibited significantly higher miR-1271-5p expression compared to those with normal healing.
- Upregulation of miR-1271-5p was associated with decreased ZBTB7A expression in MC3T3-E1 cells.
- miR-1271-5p demonstrated a regulatory role in cellular activities relevant to fracture healing.
Conclusions:
- MiR-1271-5p is implicated in the healing process of pilon fractures through its targeting of ZBTB7A.
- miR-1271-5p represents a potential therapeutic target for enhancing pilon fracture healing.
- This study provides insights into the molecular mechanisms governing fracture repair and offers a basis for future clinical interventions.
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