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Aldo-Keto Reductase AKR1C1-AKR1C4: Functions, Regulation, and Intervention for Anti-cancer Therapy
Chen-Ming Zeng1, Lin-Lin Chang1, Mei-Dan Ying1
1Zhejiang Province Key Laboratory of Anti-cancer Drug Research, Institute of Pharmacology and Toxicology, College of Pharmaceutical Sciences, Zhejiang University Hangzhou, China.
Abstract:
Aldo-keto reductases comprise of AKR1C1-AKR1C4, four enzymes that catalyze NADPH dependent reductions and have been implicated in biosynthesis, intermediary metabolism, and detoxification. Recent studies have provided evidences of strong correlation between the expression levels of these family members and the malignant transformation as well as the resistance to cancer therapy. Mechanistically, most studies focus on the catalytic-dependent function of AKR1C isoforms, like their impeccable roles in prostate cancer, breast cancer, and drug resistance due to the broad substrates specificity. However, accumulating clues showed that catalytic-independent functions also played critical roles in regulating biological events. This review summarizes the catalytic-dependent and -independent roles of AKR1Cs, as well as the small molecule inhibitors targeting these family members.
Insights
Aldo-keto reductases (AKR1C1-AKR1C4) are involved in cancer development and drug resistance through both catalytic and non-catalytic functions. This review explores these roles and potential small molecule inhibitors for cancer therapy.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Aldo-keto reductases (AKR1C1-AKR1C4) are enzymes crucial for various metabolic processes.
- Their expression is linked to cancer malignancy and therapeutic resistance.
- Research has primarily focused on their catalytic roles in cancers like prostate and breast cancer.
Purpose of the Study:
- To review the catalytic-dependent functions of AKR1C isoforms.
- To explore the emerging understanding of their catalytic-independent roles in biological regulation.
- To summarize small molecule inhibitors targeting AKR1C family members.
Main Methods:
- Literature review of studies on AKR1C enzymes.
- Analysis of research on catalytic and non-catalytic functions.
- Compilation of information on small molecule inhibitors.
Main Results:
- AKR1C enzymes exhibit broad substrate specificity, impacting biosynthesis, metabolism, and detoxification.
- Both catalytic and catalytic-independent functions of AKR1Cs are implicated in cancer progression and drug resistance.
- Various small molecule inhibitors targeting AKR1Cs have been identified.
Conclusions:
- AKR1C enzymes play multifaceted roles in cancer, involving both enzymatic activity and non-enzymatic functions.
- Targeting AKR1Cs offers potential therapeutic strategies for overcoming cancer malignancy and drug resistance.
- Further research into catalytic-independent functions and inhibitor development is warranted.
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