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Published on: January 7, 2019
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Ethyl acetate fraction in ethanol extract from root of
Xiaohua Li1, Haitao Li1, Lingyu Jin1
1Key Laboratory of Dai and Southern medicine of Xishuangbanna Dai Autonomous Prefecture, Yunnan Branch Institute of Medicinal Plant, Chinese Academy of Medical Sciences, Jinghong 666100, China.
Summary
The ethyl acetate fraction (EFA) from ""Dai-Bai-Jie"" root exhibits potent anti-tumor activity against A549 lung cancer cells. EFA induces apoptosis and G0/G1 cell cycle arrest, with significant efficacy in vivo and minimal host toxicity.
Area of Science:
- Pharmacology and Traditional Medicine
- Cancer Biology and Therapeutics
- Molecular Oncology
Background:
- The root of "Dai-Bai-Jie" is explored for its potential medicinal properties.
- Lung cancer, specifically A549 cell lines, remains a significant therapeutic challenge.
- Understanding the mechanisms of natural compounds is crucial for developing novel anti-cancer strategies.
Purpose of the Study:
- To evaluate the anti-tumor activity of the ethyl acetate fraction (EFA) from "Dai-Bai-Jie" root extract.
- To elucidate the underlying molecular mechanisms of EFA's action on A549 cancer cells.
- To assess the in vivo anti-tumor efficacy and safety of EFA.
Main Methods:
- Cytotoxic activity was assessed using the SRB assay.
- Apoptosis and cell cycle progression were analyzed via Annexin V-FITC staining.
- Protein expression levels related to apoptosis were detected using Western blot.
- In vivo anti-tumor effects were evaluated in an A549 tumor-bearing nude mouse model.
Main Results:
- EFA demonstrated significant cytotoxic activity against A549 cells (IC50 = 3.5 ¦Ìg/mL).
- EFA induced apoptosis and G0/G1 cell cycle arrest in A549 cells in vitro.
- In vivo studies showed significant tumor inhibition with minimal toxicity to the host mice.
Conclusions:
- EFA effectively inhibits A549 cancer cell proliferation and induces apoptosis.
- The anti-cancer mechanism involves modulation of apoptosis-related proteins, including Bcl-2, Bax, p53, Caspase-3, and Caspase-8.
- EFA presents a promising therapeutic potential for lung cancer treatment.
