Bcl-2-associated X protein mRNA (BAX mRNA) (BAX mRNA)

Bcl-2-associated X protein (BAX) mRNA is the transcript responsible for the synthesis of the BAX protein, a fundamental pro-apoptotic member of the Bcl-2 family. The BAX protein acts as a critical mediator of the intrinsic apoptotic pathway by inducing mitochondrial outer membrane permeabilization (MOMP), which leads to the release of cytochrome c and subsequent cell death (UniProt P55269). In the context of oncology, BAX is frequently downregulated, allowing cancer cells to evade apoptosis; thus, the delivery of exogenous BAX mRNA via lipid nanoparticles is being investigated as a therapeutic strategy to restore apoptotic signaling in tumors (PubMed: 31434084). Conversely, BAX is often overexpressed in neurodegenerative diseases and ischemic injuries, where it drives pathological neuronal loss. In these conditions, BAX mRNA serves as a target for gene-silencing modalities, such as antisense oligonucleotides (ASOs) and small interfering RNAs (siRNAs), which aim to reduce BAX protein levels and provide cytoprotection (PubMed: 12067233). The clinical development of BAX mRNA-targeted therapies faces challenges regarding tissue-specific delivery and the potential for systemic toxicity if apoptosis is inadvertently triggered in healthy cells. Monitoring the BAX/Bcl-2 ratio at the mRNA level is often used as a biomarker to evaluate the apoptotic threshold of cells and the efficacy of targeted interventions.

Other names

BCL2L4 mRNABcl-2-like protein 4 mRNAApoptosis regulator BAX mRNA

RNA interference, Antisense inhibition, and mRNA-mediated protein expression