Eukaryotic translation machinery (80S ribosome) (80S ribosome)

The eukaryotic translation machinery is the complex macromolecular apparatus responsible for protein synthesis, comprising the 80S ribosome (composed of 40S and 60S subunits) and various auxiliary proteins known as translation factors [Source: NIH/NCBI]. This machinery decodes genetic information from mRNA into functional polypeptides, a process essential for cellular growth, differentiation, and homeostasis. In many diseases, particularly cancer and viral infections, this machinery is hijacked or dysregulated to favor the production of oncogenic or viral proteins over host cell maintenance [Source: PubMed, Nature]. For instance, viruses like SARS-CoV-2 rely entirely on the host's ribosomes for replication, while many tumors overexpress initiation factors like eIF4E to drive proliferation [Source: Science, Journal of Clinical Oncology]. Consequently, components of this machinery have become significant therapeutic targets, with drugs like zotatifin and plitidepsin designed to disrupt specific stages of the translation cycle. However, because protein synthesis is a fundamental biological process, targeting it requires high specificity to avoid severe systemic toxicity and maintain a viable therapeutic index [Source: Nature Reviews Drug Discovery].

Other names

Host ribosomeTranslational apparatusProtein synthesis machineryEukaryotic translation system80S ribosome complex

Inhibition of protein synthesis by targeting various stages of translation, including initiation (e.g., eIF4A/eIF4E inhibition), elongation (e.g., eEF1A inhibition), or the ribosome's peptidyl transferase center [Source: Nature, Science].