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Abstract Title:

[Combined treatment with myo-inositol and luteolin selectively suppresses growth of human lung cancer A549 cells possibly by suppressing activation of PDK1 and Akt].

Abstract Source:

Nan Fang Yi Ke Da Xue Xue Bao. 2018 Nov 30 ;38(11):1378-1383. PMID: 30514689

Abstract Author(s):

Yun Wang, Yuyuan Zhang, Xue Chen, Yun Hong, Zhengdong Wu

Article Affiliation:

Yun Wang

Abstract:

OBJECTIVE: To study the effects of myo-inositol and luteolin on human lung cancer A549 cells and explore the possible mechanisms.

METHODS: A549 cells were treated with different concentrations of myo-inositol and luteolin, either alone or in combination, and the cell viability was examined using MTT assay. A549 cells and human bronchial epithelial Beas-2B cells were treated for 48 h with 10 mmol/L myo-inositol and 20μmol/L luteolin, alone or in combination, and the cell proliferation was detected using MTT assay; the colony formation and migration of the cells were examined with colony formation assay and wound healing assay, respectively. The protein expression levels in A549 cells were detected using Westernblotting.

RESULTS: Both myo-inositol and luteolin could dose-dependently inhibit the viability of A549 cells. Treatments with 10 mmol/L myo-inositol, 20μmol/L luteolin, and both for 48 h caused significant reduction in the cell viability (92%, 83% and 70% of the control level, respectively) and colony number (79%, 73% and 43%, respectively), and significantly lowered the wound closure rate (24.61%, 13.08% and 8.65%, respectively, as compared with29.99% in the control group). Similar treatments with myoinositol and luteolin alone or in combination produced no significant inhibitory effect on the growth, colony formation or migration of Beas-2B cells. The expressions of p-PDK1 and p-Akt in myo-inositol-treated A549 cells and the expression ofpPDK1 in luteolin-treated cells were significantly decreased (< 0.05), and the decrements were more obvious in the combined treatment group (< 0.05).

CONCLUSIONS: Luteolin combined with myo-inositol can selectively inhibit the proliferation and migration of A549 cells, and these effects are probably mediated, at least in part, by suppressing the activation of PDK1 and Akt.

Study Type : In Vitro Study

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