Publication date: September 2017
Source:Biomedicine & Pharmacotherapy, Volume 93
Author(s): Ying Liu, Zi-yu Jiang, Yuan-li Zhou, Hui-hui Qiu, Gang Wang, Yi Luo, Jing-bing Liu, Xiong-wei Liu, Wei-quan Bu, Jie Song, Li Cui, Xiao-bin Jia, Liang Feng
Endoplasmic reticulum stress (ERs) has been regarded as an important cause for the pathogenesis of non-small-cell lung cancer (NSCLC). β-elemene is an active component in the essential oil extracted from a medicinal herb, Curcuma wenyujin, and has been reported to be effective against non-small-cell lung cancer (NSCLC). However, the potential effect and underlying mechanisms of β-elemene on regulating ERs to inhibit NSCLC are still unclear. In the present study, A549 cells and Lewis tumor-bearing C57BL/6J mice were established to evaluate this effect. Visualsonics Vevo 2100 Small Animal Dedicated High-frequency Color Ultrasound was performed to observe tumor volume in vivo. 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide (MTT) was used to evaluate cell vitality of A549 cells. Furthermore, western blotting (WB), immunohistochemistry (IHC) and quantitative reverse transcription polymerase chain reaction (q-PCR) were applied to detect the ERs-related proteins. Flow cytometry was also applied to detect cell apoptosis and assay kit for reactive oxygen species (ROS) generation. Our results showed that β-elemene inhibited lung cancer tumor growth and cell vitality in a dose- and time-dependent manner. Not only that, β-elemene could up-regulate ERs-related proteins like PERK, IRE1α, ATF6, ATF4, CHOP and down-regulate the Bcl-2 expression. More importantly, ERs inhibitor 4-PBA, IRE1α inhibitor STF-083010, ATF6 inhibitor Anti-ATF6 and PERK inhibitor GSK2656157 can all reduce the amplitude of protein expression changes and apoptosis rates, then weaken the anti-tumor effect of β-elemene. Therefore, the present in vivo and in vitro study revealed that the anti-NSCLC effect of β-elemene is closely related to the activation of ERs through PERK/IRE1α/ATF6 pathway, and this might be beneficial for clinical therapy of NSCLC.
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Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com
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β-elemene regulates endoplasmic reticulum stress to induce the apoptosis of NSCLC cells through PERK/IRE1α/ATF6 pathway
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- Effects of allergen sensitization on response to t...
- Chinese versus English: Insights on Cognition duri...
- On the role of classical and novel forms of vitami...
- Vitamin D-deficiency and sex-specific dysregulatio...
- Small molecules to the rescue: Inhibition of cytok...
- Serum cytokine profile in pediatric Sweet’s syndro...
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- The Treatment of Myeloid Malignancies with Kinase ...
- Tyrosine Kinase Inhibitor Treatment for Newly Diag...
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- Tyrosine Kinase Inhibitors in the Treatment of Eos...
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- A pigmented lesion of the nasopharynx
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