miR-328-3p mediates the anti-tumor effect in osteosarcoma via directly targeting MMP-16

Abstract

Background: Increasing reports demonstrated that dysregulated expression of microRNAs (miRNAs) leads to the progression of various tumors. Previous studies revealed that miR-328-3p exhibited dysregulated expression in various types of tumors. However, its function and underlying mechanism in osteosarcoma (OS) are still unexplored. Methods:The expression of miR-328-3p in the tissues and OS cell lines was detected by qRT-PCR analysis. The effects of miR-328-3p in the proliferation were analyzed by MTT assay. The proliferation and apoptosis of OS cells were examined by colony formation assay and TUNEL staining respectively. The migration and tumor formation ability of OS cells were measured by wound healing assay and xenograft in vivo mice assay. Furthermore, the regulatory roles of miR-328-3p/MMP16 were determined by western blot and luciferase reporter assay. Results:The expression of miR-328-3p was significantly decreased in OS tissues and cell lines. Furthermore, overexpression of miR-328-3p inhibited the cell proliferation and migration, but promoted the apoptosis of OS cells in vitro. Moreover, the analysis in vivo showed that miR-328-3p effectively suppressed the formation of tumors. According to the results of western blot analysis and luciferase reporter assay, we identified matrix metalloproteinase-16 (MMP-16) acted as a direct target of miR-328-3p. Moreover, the expression level of MMP-16, which participates in the occurrence and development of many cancers, was negatively correlated with the miR-328-3p expression in OS cells.Conclusion: miR-328-3p inhibited the proliferation, migration but accelerated the apoptosis of OS by directly inhibiting MMP-16. And miR-328-3p/MMP-16 axis may be one of the mechanisms of OS development and a novel potential method for the treatment of OS in clinic.

miR-548d-3p inhibits osteosarcoma by downregulating KRAS

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Hypoxic bone marrow mesenchymal cell‐extracellular vesicles containing miR‐328‐3p promote lung cancer progression via the NF2‐mediated Hippo axis

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Beneficial role of microRNA‑328‑3p in fracture healing by enhancing osteoblastic viability through the PTEN/PI3K/AKT pathway

“…A previous study on differentially expressed miRNAs in patients with osteoporosis reported that patients with osteoporosis who develop fractures had significantly decreased miR-328-3p levels ( 15 ), suggesting that miR-328-3p may be associated with bone regeneration and progression of osteoporosis. There is some evidence that miR-328-3p regulates cell proliferation and apoptosis; the decreased expression of miR-328-3p in patients with osteosarcoma has been reported to be involved in tumor progression by regulating osteosarcoma cell proliferation, migration and apoptosis ( 25 ). The expression of miR-328-3p in hepatocellular carcinoma cells was also demonstrated to be reduced and could decrease tumor cell proliferation and increase apoptosis ( 26 ).…”