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Updated: Jul 7, 2026

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Published on: June 13, 2014
Targeting therapy for breast carcinoma by ATP synthase inhibitor aurovertin B
Tsui-Chin Huang1, Hsin-Yi Chang, Chun-Hua Hsu
1Institute of Molecular and Cellular Biology, National Taiwan University, Taipei 106, Taiwan.
Abstract:
Targeting of tumor tissues is one of the most powerful approaches to accelerate the efficiency of anticancer treatments. The investigation of effective targets, including proteins specifically and abundantly expressed in abnormal regions, has been one of the most important research topics in cancer therapy. In this study, we performed a proteomic analysis on human breast carcinoma tissues to investigate the tumor-specific protein expression in breast carcinoma. Our study showed that ATP synthase was up-regulated in tumor tissues and was present on the plasma membrane of breast cancer cells. Furthermore, we treated the breast cancer cells with ATP synthase inhibitors and examined the inhibitory efficiency. Aurovertin B, an ATP synthase inhibitor, has strong inhibition on the proliferation of several breast cancer cell lines, but little influence on the normal cell line MCF-10A. Aurovertin B inhibits proliferation of breast cancer cells by inducing apoptosis and arresting cell cycle at the G0/G1 phase. This study showed aurovertin B can be used as an antitumorigenic agent and may be exploited in cancer chemotherapy.
Insights
This study identified ATP synthase as a target in breast cancer. The inhibitor Aurovertin B effectively reduced cancer cell proliferation by inducing apoptosis and cell cycle arrest.
Area of Science:
- Biochemistry
- Oncology
- Molecular Biology
Background:
- Targeting tumor-specific proteins enhances anticancer treatment efficacy.
- Identifying novel protein targets is crucial for effective cancer therapy.
Purpose of the Study:
- To investigate tumor-specific protein expression in human breast carcinoma.
- To evaluate the potential of ATP synthase as a therapeutic target in breast cancer.
Main Methods:
- Proteomic analysis of human breast carcinoma tissues.
- Treatment of breast cancer cell lines with ATP synthase inhibitors, specifically Aurovertin B.
- Assessment of cell proliferation, apoptosis, and cell cycle phase distribution.
Main Results:
- ATP synthase was found to be upregulated in breast carcinoma tissues and located on the plasma membrane of cancer cells.
- Aurovertin B demonstrated significant inhibition of breast cancer cell proliferation with minimal impact on normal cells.
- Aurovertin B induced apoptosis and G0/G1 cell cycle arrest in breast cancer cells.
Conclusions:
- ATP synthase is a promising therapeutic target for breast cancer.
- Aurovertin B exhibits potent antitumorigenic properties and warrants further investigation for cancer chemotherapy.
- Targeting ATP synthase offers a selective approach for breast cancer treatment.
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