Functional Mechanism and Clinical Implications of LINC00339 in Delayed Fracture Healing

Overview

Journal J Orthop Surg Res

Publisher Biomed Central

Specialty Orthopedics

Date 2024 Aug 27

PMID 39192334

Authors

Yuntao Li

Ya Sun

Ke Ma

Shengqian Wang

Zhibiao Wang

Lina Huang

Affiliations

Soon will be listed here.

Abstract

Objective: Delayed fracture healing is a common complication of fractures that significantly impacts human health. This study aimed to explore the role of LINC00339 (lncRNA) in delayed fracture healing to provide new directions for its treatment.

Methods: This study included 82 patients with fractures healing in a normal manner and 90 patients experiencing delayed fracture healing. Levels of LINC00339, miR-16-5p, and osteogenic marker-related mRNAs were measured using RT-qPCR. The predictive potential of LINC00339 for delayed fracture healing was validated using ROC curve analysis. The interaction between LINC00339 and miR-16-5p was validated using dual-luciferase reporter assays and RIP experiments. CCK-8 was used to assess cell proliferation, and apoptosis rates were measured by flow cytometry.

Results: LINC00339 was significantly upregulated in delayed fracture healing patients and exhibited strong predictive ability for this condition. Overexpression of LINC00339 inhibited osteoblast proliferation, promoted apoptosis, and reduced mRNA levels of osteogenic markers (P < 0.05). miR-16-5p was recognized as a target mRNA of LINC00339, with LINC00339 exerting negative regulation on miR-16-5p, while overexpression of miR-16-5p mitigated the inhibitory effects of LINC00339 on fracture healing (P < 0.05).

Conclusion: This research indicated that LINC00339 may serve as a diagnostic marker for delayed fracture healing and revealed the function of the LINC00339/miR-16-5p axis on fracture healing by regulating osteoblasts.

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