B-cell lymphoma 2-like 2 mRNA 3′ untranslated region (BCL2L2 mRNA 3′UTR) (BCL2L2 mRNA 3′UTR)

The B-cell lymphoma 2-like 2 (BCL2L2) mRNA 3′ untranslated region (3′UTR) is a critical regulatory segment of the transcript encoding the pro-survival protein Bcl-w (NCBI Gene ID: 599). This region is notably long and contains multiple conserved binding sites for microRNAs (miRNAs) and RNA-binding proteins that modulate mRNA stability and translation (PMID: 20601428). In healthy tissues, Bcl-w is essential for the survival of specific cell types, most notably in the testes where it supports spermatogenesis (PMID: 11224512). In oncogenic contexts, the BCL2L2 3′UTR often loses its regulatory control due to the downregulation of tumor-suppressive microRNAs like miR-133b and miR-122, resulting in Bcl-w overexpression (PMID: 21430612). This overexpression contributes to cell survival, invasion, and resistance to chemotherapy in cancers such as colorectal and hepatocellular carcinoma. Therapeutic targeting of this 3′UTR involves using microRNA mimics or antisense oligonucleotides (ASOs) to bind the sequence and trigger mRNA degradation or inhibit translation. Such interventions aim to lower Bcl-w levels and sensitize tumor cells to apoptosis-inducing therapies. However, drug development must address the challenge of delivery and the potential for off-target effects on normal Bcl-w-dependent physiological processes, such as male fertility (PMID: 17332328).

Other names

Bcl-w mRNA 3′UTRBCL2L2 3′UTRB-cell lymphoma 2-like 2 3-prime untranslated region

Sequence-specific binding to the 3′UTR to induce mRNA degradation or translational repression, thereby reducing Bcl-w protein expression and promoting apoptosis.