Less is more: improving proteostasis by translation slow down

Area of Science:

• Molecular Biology
• Cellular Biology
• Biochemistry

Background:

• Protein homeostasis (proteostasis) is crucial for cellular function, involving protein synthesis, maturation, and degradation.
• The ribosome is increasingly recognized as a central player in proteostasis, influencing co-translational folding, chaperone interactions, and stress responses.
• Existing proteostasis networks include chaperone systems and the proteasome.

Purpose of the Study:

• To review the role of the ribosome as a hub for protein homeostasis.
• To discuss how modulating translational processes can enhance proteostasis.
• To explore the therapeutic implications of targeting translation for protein misfolding diseases.

Main Methods:

• Review of recent scientific literature on ribosome function and protein homeostasis.
• Analysis of studies investigating the impact of translation elongation rates on protein folding fidelity.
• Discussion of strategies to modulate translational processes for therapeutic benefit.

Main Results:

• High rates of translation elongation can impair co-translational folding and translation fidelity.
• Slowing down translation emerges as a viable strategy to enhance nascent polypeptide folding.
• The ribosome's activity directly impacts cellular protein homeostasis.

Conclusions:

• Targeting ribosomal translation offers a novel approach to improve protein folding and combat proteostasis failure.
• Modulating translation speed holds therapeutic potential for treating diseases associated with protein misfolding.
• Further research into ribosome-mediated proteostasis is warranted.