MicroRNA in disease regulation

MicroRNAs are short, non-coding RNA molecules that fine-tune gene expression by binding to messenger RNAs and suppressing their translation or triggering their degradation, giving cells a layer of regulatory control beyond the DNA sequence itself. In cancer, this system frequently goes wrong — specific microRNAs are overexpressed or silenced in tumor cells, altering the activity of genes that govern cell division, survival, and metastasis. Researchers are working to map exactly which microRNAs drive particular cancers, how their biogenesis is disrupted, and whether circulating microRNAs in blood or tissue can serve as reliable early-detection biomarkers. A pressing open question is how to deliver synthetic or inhibitory microRNAs selectively to tumor cells without off-target effects, a challenge that sits at the center of current therapeutic development.

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Keywords

MicroRNAGene ExpressionCancerRegulationBiomarkersBiogenesis