Oncogenic AKTivation of translation as a therapeutic target

Area of Science:

• Biochemistry
• Molecular Biology
• Oncology

Background:

• The AKT signaling pathway is a key regulator of protein synthesis.
• It influences critical cellular processes like proliferation, growth, survival, and angiogenesis, which are often dysregulated in cancer.
• AKT impacts protein synthesis by controlling mRNA translation at all stages, from ribosome biogenesis to initiation and elongation.

Purpose of the Study:

• To explore how oncogenic AKT alters gene expression at the translational level.
• To understand the mechanisms by which AKT activates ribosome biogenesis, translation initiation, and elongation.
• To investigate the potential of targeting multiple translational control mechanisms for cancer therapy.

Main Methods:

• Analysis of AKT signaling pathway's role in protein synthesis regulation.
• Identification and functional grouping of translationally controlled mRNAs using new technologies.
• Investigating oncogenic AKT's impact on global and specific mRNA translation.

Main Results:

• Oncogenic AKT drives cellular transformation by altering gene expression via translation.
• AKT signaling induces both global protein synthesis changes and specific mRNA translation alterations.
• Emerging technologies facilitate the identification of mRNA networks regulated by translation.

Conclusions:

• Understanding how AKT regulates translational networks is crucial for cancer research.
• Current therapies primarily target translation initiation (e.g., eIF4E inhibition).
• Combined inhibition of ribosome biogenesis, translation initiation, and elongation may enhance therapeutic efficacy in AKT-driven tumors.