Ras-related C3 botulinum toxin substrate 1 mRNA 3' untranslated region (RAC1 mRNA 3'UTR)

The Ras-related C3 botulinum toxin substrate 1 (RAC1) mRNA 3' untranslated region (3'UTR) is a key regulatory element that governs the post-transcriptional fate of the RAC1 transcript (PMID: 23563491). RAC1 itself is a Rho-family GTPase essential for actin remodeling, cell motility, and cell cycle progression (UniProt: P63000). The 3'UTR serves as a scaffold for the binding of microRNAs, such as miR-142-3p and miR-101, and RNA-binding proteins like HuR, which collectively determine the stability and translation rate of the mRNA (PMID: 25333255, PMID: 21150118). In various malignancies, including melanoma and breast cancer, the loss of miRNA-mediated repression or the stabilization of the transcript leads to RAC1 overexpression, driving invasive and metastatic phenotypes (PMID: 23563491). Therapeutic strategies targeting this region aim to utilize antisense oligonucleotides (ASOs) or miRNA mimics to downregulate RAC1 expression. However, because RAC1 is involved in fundamental cellular processes like wound healing and immune response, precise targeting is necessary to avoid systemic toxicity. Monitoring RAC1 protein levels and specific miRNA profiles can serve as vital biomarkers for assessing the efficacy of these RNA-targeted therapies.

Other names

RAC1 3'UTR3' untranslated region of RAC1Ras-related C3 botulinum toxin substrate 1 3'UTR

Modulation of mRNA stability and translation through competitive binding or degradation