Emerging roles of protein disulfide isomerase in cancer
1Department of Bio and Environmental Technology, Seoul Women's University, Seoul 01797, Korea.
Abstract:
The protein disulfide isomerase (PDI) family is a group of multifunctional endoplasmic reticulum (ER) enzymes that mediate the formation of disulfide bonds, catalyze the cysteine-based redox reactions and assist the quality control of client proteins. Recent structural and functional studies have demonstrated that PDI members not only play an essential role in the proteostasis in the ER but also exert diverse effects in numerous human disorders including cancer and neurodegenerative diseases. Increasing evidence suggests that PDI is actively involved in the proliferation, survival, and metastasis of several types of cancer cells. Although the molecular mechanism by which PDI contributes to tumorigenesis and metastasis remains to be understood, PDI is now emerging as a new therapeutic target for cancer treatment. In fact, several attempts have been made to develop PDI inhibitors as anti-cancer drugs. In this review, we discuss the properties and diverse functions of human PDI proteins and focus on recent findings regarding their roles in the state of diseases including cancer and neurodegeneration. [BMB Reports 2017; 50(8): 401-410].
Insights
Protein disulfide isomerase (PDI) enzymes are crucial for protein folding in the endoplasmic reticulum (ER). PDI
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Protein disulfide isomerase (PDI) is a key enzyme family located in the endoplasmic reticulum (ER).
- PDI enzymes are multifunctional, involved in disulfide bond formation, redox reactions, and protein quality control.
- PDI plays a critical role in maintaining proteostasis within the ER.
Purpose of the Study:
- To review the properties and diverse functions of human PDI proteins.
- To highlight recent findings on PDI's role in human diseases, particularly cancer and neurodegeneration.
- To discuss PDI as a potential therapeutic target for cancer treatment.
Main Methods:
- This study is a review article, synthesizing existing structural and functional data on PDI.
- Literature search focusing on PDI's involvement in cancer proliferation, survival, and metastasis.
- Analysis of PDI's role in neurodegenerative diseases.
Main Results:
- PDI members are essential for ER proteostasis and impact various human disorders.
- Evidence indicates PDI actively contributes to cancer cell proliferation, survival, and metastasis.
- The precise molecular mechanisms of PDI in tumorigenesis and metastasis require further elucidation.
Conclusions:
- PDI is implicated in the pathogenesis of cancer and neurodegenerative diseases.
- PDI is emerging as a promising therapeutic target for anti-cancer drug development.
- Further research is needed to fully understand PDI's complex roles in disease.
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