Cytosolic translation machinery

The cytosolic translation machinery is the complex macromolecular system responsible for synthesizing proteins from messenger RNA (mRNA) templates within the eukaryotic cytoplasm [1]. At its core is the 80S ribosome, which consists of the 40S and 60S subunits, and it operates alongside a suite of translation initiation, elongation, and termination factors [2]. This machinery serves as a central hub for cellular growth, integrating signals from the mTOR and MAPK pathways to control the rate and selectivity of protein production [3]. In various diseases, particularly aggressive cancers, the translation machinery is often hyperactivated to meet the high demand for proteins required for rapid proliferation and survival [4]. Therapeutic interventions targeting this system include small molecules like Omacetaxine mepesuccinate, which inhibits the ribosomal A-site, and newer agents that target the eIF4F initiation complex [5]. While effective, these therapies must balance potent inhibition of diseased cells with the risk of systemic toxicity, such as myelosuppression, given the essential role of translation in all healthy tissues [6].

Other names

RibosomeProtein synthesis machineryEukaryotic translation apparatus80S ribosomeTranslation system

Inhibition of peptide bond formation at the ribosomal A-site, blockade of the eIF4F initiation complex assembly, or site-specific cleavage of ribosomal RNA.