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Unfolded Protein Response Signaling in Hepatic Stem Cell Activation in Liver Fibrosis
Zohreh Salimi1, Mehdi Rostami2, Yaser Eshaghi Milasi1
1Department of Clinical Biochemistry, School of Pharmacy & Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran.
Current Protein & Peptide Science
|August 23, 2023
Summary
Cellular stress disrupts protein balance, triggering the unfolded protein response (UPR). This UPR pathway is implicated in liver fibrosis, suggesting UPR-targeting therapies for this condition.
Area of Science:
- Cellular Biology
- Pathogenesis
- Molecular Mechanisms
Background:
- Cellular protein homeostasis is disrupted by stress, leading to endoplasmic reticulum (ER) overload.
- The unfolded protein response (UPR) is activated to restore cellular equilibrium but can contribute to disease.
- UPR activation is linked to the pathogenesis of metabolic syndrome, neurodegeneration, cancer, and fibrotic diseases.
Purpose of the Study:
- To elucidate the role of the UPR signaling pathway in cellular damage within liver fibrosis.
- To investigate the ER/UPR stress axis in the context of liver fibrosis pathogenesis.
- To guide the development of novel therapeutic strategies targeting UPR in liver fibrosis.
Main Methods:
- Review of existing literature on UPR signaling and liver fibrosis.
- Analysis of the molecular mechanisms linking ER stress to hepatic stellate cell activation.
- Exploration of the pathogenic pathways involved in UPR-mediated liver damage.
Main Results:
- UPR activation is a key mechanism in the cellular damage observed in liver fibrosis.
- The ER/UPR stress axis plays a significant role in the development and progression of hepatic fibrosis.
- Altered cellular metabolism, driven by UPR, is integral to activating hepatic stellate cells.
Conclusions:
- The UPR signaling pathway is critically involved in the cellular damage associated with liver fibrosis.
- Targeting the UPR pathway offers a promising therapeutic avenue for liver fibrosis.
- Further investigation into the ER/UPR stress axis can inform the development of effective drug therapies for liver fibrosis.
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