RUNX2 Regulation in Cancer Cell Metastasis

RUNX2, a master transcription factor originally characterised for its central role in bone development, has emerged as a pivotal regulator of cancer cell dissemination and colonisation. Aberrant re­activation of RUNX2 in diverse tumour types drives a transcriptional programme that promotes epithelial-to-mesenchymal transition, extracellular matrix remodelling, motility and invasion. Through direct binding to promoters and enhancers, RUNX2 up-regulates genes encoding proteases, chemokine receptors and adhesion molecules, while repressing differentiation factors, thereby endowing cancer cells with stem-like properties and facilitating escape from primary sites. In addition, RUNX2 interacts with signalling cascades such as PI3K/AKT and TGF-β to reinforce its own stability and transcriptional activity, creating feed-forward loops that underpin metastatic competence. A further layer of regulation is provided by non-coding RNAs and chromatin-remodelling complexes, which modulate RUNX2 expression and target-gene selection in a tissue-specific manner. Together, these multilayered mechanisms converge on the metastatic cascade, from intravasation to colonisation of distant organs, underscoring RUNX2 as both a biomarker of aggressive disease and a promising therapeutic target.

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RUNX2 Regulation in Cancer Cell Metastasis publication trend

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Technical terms

Transcription factor: A protein that binds specific DNA sequences to regulate the transcription of genetic information from DNA to messenger RNA.

Enhancer-associated long non-coding RNA (elncRNA): A non-protein-coding RNA transcribed from enhancer regions that modulates chromatin structure and gene expression.

Epithelial-to-mesenchymal transition (EMT): A cellular programme by which stationary epithelial cells acquire mesenchymal characteristics, enhancing motility and invasiveness.

Chromatin-remodelling complex: A multi-protein assembly that alters chromatin structure, thereby regulating the accessibility of DNA to transcription machinery.

References

1. Exploring the transcriptional cooperation between RUNX2 and its associated elncRNA RAIN. Cell Death & Disease (2024).
2. RUNX2 and Cancer. International Journal of Molecular Sciences (2023).
3. RUNX2 and the PI3K/AKT axis reciprocal activation as a driving force for tumor progression. Molecular Cancer (2015).
4. RUNX2 recruits the NuRD(MTA1)/CRL4B complex to promote breast cancer progression and bone metastasis. Cell Death & Differentiation (2022).