期刊
PHYTOTHERAPY RESEARCH
卷 35, 期 10, 页码 5823-5837出版社
WILEY
DOI: 10.1002/ptr.7240
关键词
5-fluorouracil; chemosensitivity; curcumin; gut microbiota; hepatocellular carcinoma
资金
- CAMS Innovation Fund for Medical Sciences [2016-I2M-3-011]
- Chinese academy of medical sciences
- Key research projects of Medical Science in Hebei Province [20150728]
The study showed that curcumin can enhance the chemosensitivity of HCC cells to 5-Fu by promoting apoptosis, arresting the cell cycle at G2/M phase, and blocking the PI3K/AKT/mTOR signaling pathway. In vivo, curcumin also significantly increased the sensitivity of H22 cells to 5-Fu and inhibited tumor growth, with gut microbiota playing a key role in its effects.
5-Fluorouracil (5-Fu) is efficient for hepatocellular carcinoma (HCC) treatment, but fast-emerging resistance limits its usage. Curcumin is being investigated for its potential chemosensitivity, but its low oral bioavailability hinders its chemosensitivity effect in vivo. Gut microbiota modulation is considered to contribute to its bioactivities in vivo. In the current study, we demonstrate that curcumin can enhance 5-Fu chemosensitivity in HCC cells in vitro, increase the apoptosis rate, arrest the cell cycle at G2/M phase, and block the PI3k/AKT/mTOR signalling pathway by inhibiting the phosphorylation of PI3K and its downstream protein kinases. Curcumin also remarkably sensitized H22 cells to 5-Fu, allowing it to inhibit tumour growth in vivo. 16S rDNA sequencing suggests that curcumin in combination with 5-Fu significantly alters the gut microbiota composition based on alpha and beta diversity analysis compared to drug treatment alone. Gut microbiota depletion abolished curcumin's chemosensitivity effect in vivo. A pharmacodynamics study suggested that the gut microbiota increased the oral bioavailability of curcumin (AUC((0-t)) 15.24 +/- 0.77 mu M/h [wt] vs. 3.04 +/- 0.18 mu M/h [gut microbiota depleted]). In conclusion, curcumin can increase the chemosensitivity of HCC to 5-Fu in vitro and in vivo, and gut microbiota plays a key role in its effect in vivo.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据