High mobility group AT-hook 2 messenger RNA (HMGA2 mRNA)

High mobility group AT-hook 2 (HMGA2) mRNA is the transcript of the HMGA2 gene, which encodes a small, non-histone chromatin-associated protein that functions as an architectural transcription factor. By altering chromatin structure, the resulting HMGA2 protein regulates the expression of various genes involved in cell growth, differentiation, and the maintenance of stem cell identity (UniProt P52926). While HMGA2 mRNA is highly expressed during embryonic development, it is virtually undetectable in most adult tissues; however, its aberrant re-expression is a hallmark of many human malignancies, including lung, breast, and gastric cancers (PubMed: 28651543). The 3' untranslated region (UTR) of HMGA2 mRNA is a critical regulatory site containing multiple binding elements for the let-7 microRNA family, which normally suppresses HMGA2 expression; the loss of this regulation often leads to tumor progression and metastasis (PubMed: 17452449). Therapeutic strategies targeting HMGA2 mRNA, such as siRNAs and antisense oligonucleotides, aim to silence its expression to inhibit the epithelial-mesenchymal transition (EMT) and sensitize cancer cells to chemotherapy (PubMed: 31481310). Because of its high tumor specificity and role in driving aggressive phenotypes, HMGA2 mRNA represents a significant target for precision oncology and RNA-based drug development.

Other names

HMGI-C mRNAHigh-mobility group protein HMGI-C mRNAHMGA2 transcriptBABL mRNALIPO mRNA

RNA interference (RNAi) or antisense-mediated degradation of the HMGA2 transcript to prevent translation into the HMGA2 protein, thereby inhibiting its oncogenic architectural transcription factor activity.