scholarly journals A miRNA-200c/cathepsin L feedback loop determines paclitaxel resistance in human lung cancer A549 cells in vitro through regulating epithelial–mesenchymal transition

2017 ◽  
Vol 39 (6) ◽  
pp. 1034-1047 ◽  
Author(s):  
Yi-fan Zhao ◽  
Mei-ling Han ◽  
Ya-jie Xiong ◽  
Long Wang ◽  
Yao Fei ◽  
...  
2021 ◽  
Vol 11 (19) ◽  
pp. 8866
Author(s):  
Myong Jin Lee ◽  
Geum Jin Kim ◽  
Myoung-Sook Shin ◽  
Jimin Moon ◽  
Sungjin Kim ◽  
...  

Chemical investigations of Aquimarina sp. MC085, which suppressed TGF-β-induced epithelial–mesenchymal transition (EMT) in A549 human lung cancer cells, led to the isolation of compounds 1–3. Structural characterization using spectroscopic data analyses in combination with Marfey’s analysis revealed that they were two diketopiperazines [cyclo(l-Pro-l-Leu) (1) and cyclo(l-Pro-l-Ile) (2)] and one N-phenethylacetamide (3). Cyclo(l-Pro-l-Leu) (1) and N-phenethylactamide (3) inhibited the TGF-β/Smad pathway and suppressed the metastasis of A549 cells by affecting TGF-β-induced EMT. However, cyclo(l-Pro-l-Ile) (2) downregulated mesenchymal factors via a non-Smad-mediated signaling pathway.


2002 ◽  
Vol 30 (02n03) ◽  
pp. 307-314 ◽  
Author(s):  
Hui-Chiu Chang ◽  
Wen-Chun Hung ◽  
Ming-Shyan Huang ◽  
Hseng-Kuang Hsu

Recent study indicated that the components of Toona sinensis Roemor have potent anti-inflammatory and analgesic effects. These components have also been reported to inhibit the growth of boils in vivo. In this study, we investigated the effect of crude extract from the leaves of Toona sinensis Roemor on the proliferation of A549 lung cancer cells. We found that the extract effectively blocked cell cycle progression by inhibiting the expression of cyclin D1 and E in A549 cells. Additionally, incubation of the extract led to activation of caspase-3-like proteases and apoptotic cell death. Conversely, the extract did not show any significant cytotoxic effect on primarily cultured human foreskin fibroblasts or MRC-5 human lung fibroblasts. Therefore, antiproliferative action of the extract is specific for tumor cells. Our results suggest that the components of Toona sinensis Roemor have potent anticancer effects in vitro and identification of the useful components in the extract may lead to the development of a novel class of anticancer drugs.


Oncotarget ◽  
2016 ◽  
Vol 8 (3) ◽  
pp. 5092-5110 ◽  
Author(s):  
Sirichat Kaowinn ◽  
Jeonghyo Kim ◽  
Jaebeom Lee ◽  
Dong Hoon Shin ◽  
Chi-Dug Kang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document