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Abstract Title:

[Mechanism of Chlorogenic Acid in Apoptotic Regulation through Notch1
Pathway in Non-small Cell Lung Carcinoma in Animal Level].

Abstract Source:

Zhongguo Fei Ai Za Zhi. 2017 Aug 20 ;20(8):555-561. PMID: 28855037

Abstract Author(s):

Wei Li, Xu Liu, Guoqian Zhang, Linlin Zhang

Article Affiliation:

Wei Li

Abstract:

BACKGROUND: It has been proven that chlorogenic acids can produce anticancer effects by regulating cell cycle, inducing apoptosis, inhibiting cell growth, Notch signaling pathways are closely related to many human tumors. The aim of this study is to study the mechanism of chlorogenic acid on apoptosis of non-small lung cancer through Notch1 pathway in animal level, and hope to provide theory basis on clinical treatment and research aimed at targeting Notch1 signaling in non-small cell carcinoma (NSCLC).

METHODS: MTT assay was used to evaluate the A549 cell proliferation under the treatment of chlorogenic acid. The effect of chlorogenic acid on apoptotic and cell cycle were detected by flow cytometry. The animal model of A549 cell transplanted in nude was established, tumer size and weight were detected. The mRNA level of Notch1 signal pathway related facter were detected by RT-PCR; the expression of Notch1 signal pathway related facter in tumor tissue was detected by western blot.

RESULTS: Chlorogenic acid inhibited the A549 cell proliferation. incresed cell apoptotic and cell percentagein G2/M (P<0.05), and in a dose-dependent manner. In animal model, tumer size and weight were lower than control group, the difference was statistically significant (P<0.05). The relative expression of mRNA of Notch1, VEGF, Delta4, HES1 and HEY1 were decreaced (P<0.05) in tumor tissue which treated with chlorogenic. The expression of Notch1 were decreaced, PTEN, p-PTEN, p-AKT were increced significantly in tumor tissue which treated with chlorogenic (P<0.05).

CONCLUSIONS: Chlorogenic acid can regulate theapoptosis of non-small lung cancer through Notch pathway in animal level, which may be associated with the down-regulating the expression of VEGF and Delta4. Notch pathway may cross talk with PI3K/AKT pathway through PTEN in NSCLC.

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