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Published on: May 19, 2023
Targeting defective proteostasis in the collagenopathies
Madeline Y Wong1, Matthew D Shoulders1
1Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, United States.
Abstract:
The collagenopathies are a diverse group of diseases caused primarily by mutations in collagen genes. The resulting disruptions in collagen biogenesis can impair development, cause cellular dysfunction, and severely impact connective tissues. Most existing treatment options only address patient symptoms. Yet, while the disease-causing genes and proteins themselves are difficult to target, increasing evidence suggests that resculpting the intracellular proteostasis network, meaning the machineries responsible for producing and ensuring the integrity of collagen, could provide substantial benefit. We present a proteostasis-focused perspective on the collagenopathies, emphasizing progress toward understanding how mechanisms of collagen proteostasis are disrupted in disease. In parallel, we highlight recent advances in small molecule approaches to tune endoplasmic reticulum proteostasis that may prove useful in these disorders.
Insights
Collagen disorders (collagenopathies) stem from collagen gene mutations. Targeting cellular protein quality control (proteostasis) offers a promising therapeutic strategy beyond symptom management.
Area of Science:
- Biochemistry
- Molecular Biology
- Genetics
Background:
- Collagenopathies are genetic disorders caused by mutations in collagen genes.
- These mutations disrupt collagen production and integrity, leading to impaired development and connective tissue damage.
- Current treatments for collagenopathies primarily manage symptoms, lacking targeted approaches for the underlying molecular defects.
Purpose of the Study:
- To present a proteostasis-focused perspective on collagenopathies.
- To highlight how collagen proteostasis mechanisms are disrupted in these diseases.
- To explore the potential of small molecule therapeutics for endoplasmic reticulum proteostasis in treating collagenopathies.
Main Methods:
- Review of existing literature on collagenopathies and proteostasis.
- Analysis of molecular mechanisms underlying collagen biosynthesis and quality control.
- Examination of recent advances in small molecule modulators of endoplasmic reticulum proteostasis.
Main Results:
- Disruptions in collagen biogenesis due to genetic mutations are central to collagenopathies.
- The intracellular proteostasis network is a viable target for therapeutic intervention.
- Small molecules targeting endoplasmic reticulum proteostasis show potential for treating these disorders.
Conclusions:
- Resculpting the proteostasis network offers a novel therapeutic avenue for collagenopathies.
- Understanding disease-specific proteostasis disruptions is key to developing effective treatments.
- Small molecule-based modulation of endoplasmic reticulum proteostasis presents a promising strategy for future therapies.
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