Small Molecules to Improve ER Proteostasis in Disease.

Area of Science:

• Cellular Biology
• Molecular Medicine
• Biochemistry

Background:

• Abnormal accumulation of misfolded proteins in the endoplasmic reticulum (ER) lumen induces ER stress.
• ER stress is implicated in the pathogenesis of diverse diseases, including diabetes, cancer, neurodegeneration, and immune disorders.
• The unfolded protein response (UPR) is a critical cellular signaling pathway that mitigates ER stress.

Purpose of the Study:

• To review current strategies for developing small molecules that modulate the UPR.
• To explore the therapeutic potential of targeting UPR components for human diseases.
• To focus on applications in neurodegenerative diseases, metabolic disorders, and cancer.

Main Methods:

• Review of existing literature on ER stress and the UPR.
• Analysis of small molecule inhibitors and activators targeting UPR pathways.
• Discussion of disease-specific contexts where UPR modulation is relevant.

Main Results:

• The UPR acts as a double-edged sword, promoting adaptation or cell death based on stress intensity and duration.
• Small molecules targeting specific UPR components are under development.
• These molecular strategies show promise for treating a range of human pathologies.

Conclusions:

• Targeting the UPR represents a promising therapeutic avenue for diseases driven by ER stress.
• Further research into small molecule modulators could lead to novel treatments for neurodegenerative, metabolic, and oncological conditions.
• The dual nature of UPR signaling necessitates careful consideration of therapeutic strategies.