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Updated: Aug 27, 2025

Assays for Validating Histone Acetyltransferase Inhibitors
Published on: August 6, 2020
Valeric acid acts as a novel HDAC3 inhibitor against prostate cancer
Rui Han1,2,3,4,5,6, Hongxing Yang7,8, Ya Li9
1Department of Chinese Medicine, Naval Medical University, Shanghai, 200433, People's Republic of China. dianxiqiao@foxmail.com.
Abstract:
Prostate cancer is the second cause of cancer-related deaths in men worldwide, and new agents for curing the disease are still needed. In this study, we theoretically and experimentally demonstrated that valeric acid (VA) was a HDAC inhibitor, and anti-cancer efficacy of VA in prostate cancer cells was also observed using either 2D or 3D culture systems. VA was cytotoxic for prostate cancer cells but low toxic to normal cells. VA significantly inhibited E2F1/E2F3 expression but increased CASP3 activity. In vivo mouse models further showed its anti-cancer activity and potential property of chemosensitizer with promoting apoptosis. The findings suggest that VA acts as a HDAC3 inhibitor with anti-cancer effect on prostate cancer by regulating E2F1/E2F3/CASP3 axis.
Insights
Valeric acid (VA) is a HDAC3 inhibitor that effectively targets prostate cancer cells, showing low toxicity to normal cells. This compound promotes apoptosis and enhances chemosensitivity, offering a potential new treatment strategy.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Prostate cancer remains a leading cause of cancer-related mortality in men globally.
- There is an ongoing need for novel therapeutic agents to combat this disease effectively.
Purpose of the Study:
- To investigate valeric acid (VA) as a potential HDAC inhibitor for prostate cancer treatment.
- To evaluate the anti-cancer efficacy and mechanism of action of VA in prostate cancer cells and in vivo models.
Main Methods:
- Theoretical and experimental validation of valeric acid (VA) as a histone deacetylase (HDAC) inhibitor.
- In vitro studies using 2D and 3D cell culture systems to assess VA's cytotoxicity and effects on prostate cancer cells versus normal cells.
- Analysis of key protein expression (E2F1/E2F3) and enzyme activity (CASP3) following VA treatment.
- In vivo studies using mouse models to confirm anti-cancer activity and chemosensitizing properties.
Main Results:
- Valeric acid (VA) was confirmed as a HDAC3 inhibitor.
- VA demonstrated significant cytotoxicity against prostate cancer cells with minimal toxicity to normal cells.
- VA treatment led to the inhibition of E2F1/E2F3 expression and increased CASP3 activity.
- In vivo studies supported VA's anti-cancer effects and its potential as a chemosensitizer by promoting apoptosis.
Conclusions:
- Valeric acid (VA) functions as a HDAC3 inhibitor, exhibiting anti-cancer properties against prostate cancer.
- VA exerts its effects by modulating the E2F1/E2F3/CASP3 signaling pathway, leading to apoptosis.
- VA shows promise as a therapeutic agent or chemosensitizer for prostate cancer treatment due to its targeted efficacy and low toxicity.
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