MicroRNA Modulation in Osteosarcoma Progression

MicroRNAs are short, non-coding RNA molecules that fine-tune gene expression by binding to messenger RNAs and directing their degradation or translational repression. In osteosarcoma, a highly aggressive primary bone tumour, dysregulation of specific microRNAs contributes to key hallmarks of malignancy, including enhanced proliferation, invasion, metastasis and chemoresistance. Oncogenic microRNAs may be overexpressed and target tumour suppressor genes, thereby promoting oncogenic signalling pathways such as PI3K/Akt, Wnt and TGF-β. Conversely, tumour-suppressive microRNAs are often downregulated, releasing constraints on factors that drive cell cycle progression, migration and survival. Recent work has also highlighted nuclear roles for certain microRNAs, which interact with genomic enhancers to activate pro-metastatic programs in a process dependent on Argonaute 2. Circulating microRNAs, packaged within extracellular vesicles, offer a minimally invasive window into tumour status and hold promise both as biomarkers for early detection and as vehicles for therapeutic delivery. Together, these interconnected mechanisms underscore the potential of microRNA modulation to inform new diagnostic tools and targeted treatments for osteosarcoma.

Research from Nature Portfolio

A foundational study has characterised miR-143-3p as a potent tumour suppressor in osteosarcoma by demonstrating that its expression is markedly reduced in patient samples and cell lines with poor prognosis. Restoration of miR-143-3p levels inhibited cell proliferation and metastatic behaviour while inducing apoptosis. Mechanistically, miR-143-3p directly targets the transcription factor FOSL2, a driver of cell migration and invasion, and reverses its oncogenic effects. These insights establish miR-143-3p/FOSL2 axis modulation as a compelling strategy for future therapeutic development.

MicroRNA Modulation in Osteosarcoma Progression publication trend

The graph below shows the total number of articles in microrna modulation in osteosarcoma progression across all publications each year (not limited to Nature Index journals).

Technical terms

MicroRNA: A small non-coding RNA (~22 nucleotides) that regulates gene expression post-transcriptionally by binding to complementary sequences in target mRNAs.

Extracellular vesicle: A membrane-bound particle released by cells into bodily fluids, which can transport proteins, lipids and nucleic acids between cells.

Enhancer: A distal regulatory DNA element that increases transcription of target genes through chromatin remodelling and recruitment of transcriptional machinery.

Argonaute 2: A core component of the RNA-induced silencing complex that binds microRNAs and mediates target mRNA cleavage or translational repression.

References

1. miR‐1246 promotes osteosarcoma cell migration via NamiRNA‐enhancer network dependent on Argonaute 2. MedComm (2024).
2. miR-143-3p inhibits the proliferation, migration and invasion in osteosarcoma by targeting FOSL2. Scientific Reports (2018).
3. MicroRNA signatures in osteosarcoma: diagnostic insights and therapeutic prospects. Molecular and Cellular Biochemistry (2024).
4. Circulating and extracellular vesicle-derived microRNAs as biomarkers in bone-related diseases. Frontiers in Endocrinology (2023).