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Article Publish Status: FREE
Abstract Title:

d-limonene exhibits antitumor activity by inducing autophagy and apoptosis in lung cancer.

Abstract Source:

Onco Targets Ther. 2018 ;11:1833-1847. Epub 2018 Apr 4. PMID: 29670359

Abstract Author(s):

Xiao Yu, Hongyan Lin, Yu Wang, Wenwen Lv, Shuo Zhang, Ying Qian, Xiaobei Deng, Nannan Feng, Herbert Yu, Biyun Qian

Article Affiliation:

Xiao Yu

Abstract:

Purpose: d-limonene is a plant extract with widespread application, and it has been recently reported to have antiproliferative and proapoptotic effects on cancer cells. However, the mechanisms by which d-limonene achieves these effects, especially in lung cancer, are not entirely clear. Therefore, the goal of this study was to examine the effects of d-limonene on lung cancer and explore its mechanisms of action.

Methods: We examined the therapeutic effects of d-limonene on lung cancer cells and in a xenograft animal model by characterizing its effects on the pathways of apoptosis and autophagy. Cell proliferation was measured using the Cell Counting Kit-8, and apoptosis was determined by flow cytometric analysis. Levels of LC3 puncta, an autophagy marker, were analyzed by laser scanning confocal microscopy. Autophagy and apoptosis-related gene expression were assessed by real-time quantitative polymerase chain reaction and Western blot.

Results: d-limonene inhibited the growth of lung cancer cells and suppressed the growth of transplanted tumors in nude mice. Expression of apoptosis and autophagy-related genes were increased in tumors after treatment with d-limonene. Furthermore, the use of chloroquine, an autophagy inhibitor, and knockdown of thegene, suppressed the apoptosis induced by d-limonene.

Conclusion: d-limonene may have a therapeutic effect on lung cancer as it can induce apoptosis of lung cancer cells by promoting autophagy.

Study Type : Animal Study, In Vitro Study

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Sayer Ji
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