N,NMODIFIER LETTER PRIME-Diarylurea Derivatives (CTPPU) Inhibited NSCLC Cell Growth and Induced Cell Cycle Arrest through Akt/GSK-3β/c-Myc Signaling Pathway

被引:6
作者
Thongsom, Sunisa [1 ,2 ]
Racha, Satapat [2 ,3 ]
Ei, Zin Zin [1 ,2 ]
Petsri, Korrakod [1 ,2 ]
Aksorn, Nithikoon [4 ]
Chamni, Supakarn [5 ,6 ]
Panpuang, Vitsarut [6 ]
Zou, Hongbin [7 ]
Chanvorachote, Pithi [1 ,2 ]
机构
[1] Chulalongkorn Univ, Fac Pharmaceut Sci, Ctr Excellence Canc Cell & Mol Biol, Bangkok 10330, Thailand
[2] Chulalongkorn Univ, Fac Pharmaceut Sci, Dept Pharmacol & Physiol, Bangkok 10330, Thailand
[3] Chulalongkorn Univ, Grad Sch, Interdisciplinary Program Pharmacol, Bangkok 10330, Thailand
[4] Navamindradhiraj Univ, Fac Med Vajira Hosp, Dept Clin Pathol, Bangkok 10300, Thailand
[5] Chulalongkorn Univ, Dept Pharmacognosy & Pharmaceut Bot, Bangkok 10330, Thailand
[6] Chulalongkorn Univ, Fac Pharmaceut Sci, Nat Prod & Nanoparticles Res Unit NP2, Bangkok 10330, Thailand
[7] Zhejiang Univ, Coll Pharmaceut Sci, Hangzhou 310058, Peoples R China
关键词
N; NMODIFIER LETTER PRIME-diarylureas; NSCLC; Akt; cell cycle progression; c-Myc; LUNG-CANCER; PI3K/AKT/MTOR PATHWAY; PHOSPHORYLATION; AKT/PKB; BIOLOGY; AKT; MYC;
D O I
10.3390/ijms24021357
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Lung cancer is one of the most common malignancies worldwide. Non-small-cell lung cancer (NSCLC) accounts for more than 80% of lung cancers, shows chemotherapy resistance, metastasis, and relapse. The phosphatidylinositol-3 kinase (PI3K)/Akt pathway has been implicated in the carcinogenesis and disease progression of NSCLC, suggesting that it may be a promising therapeutic target for cancer therapy. Although phenylurea derivatives have been reported as potent multiple kinase inhibitors, novel unsymmetrical N,NMODIFIER LETTER PRIME-diarylurea derivatives targeting the PI3K/Akt pathway in NSCLC cells remain unknown. Methods: N,NMODIFIER LETTER PRIME-substituted phenylurea derivatives CTPPU and CT-(4-OH)-PU were investigated for their anticancer proliferative activity against three NSCLC cell lines (H460, A549, and H292) by 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyl tetrazolium bromide, colony formation, Hoechst33342/PI staining assays, and apoptosis analysis. The protein expressions of Akt pathway-related proteins in response to CTPPU or CT-(4-OH)-PU were detected by Western blot analysis. The Kyoto Encyclopedia of Genes and Genomes mapper was used to identify the possible signaling pathways in NSCLC treated with CTPPU. The cell cycle was analyzed by flow cytometry. Molecular docking was used to investigate the possible binding interaction of CTPPU with Akt, the mammalian target of rapamycin complex 2 (mTORC2), and PI3Ks. Immunofluorescence and Western blot analysis were used to validate our prediction. Results: The cytotoxicity of CTPPU was two-fold higher than that of CT-(4-OH)-PU for all NSCLC cell lines. Similarly, the non-cytotoxic concentration of CTPPU (25 mu M) dramatically inhibited the colony formation of NSCLC cells, whereas its relative analog CT-(4-OH)-PU had no effect. Protein analysis revealed that Akt and its downstream effectors, namely, phosphorylated glycogen synthase kinase (GSK)-3 beta (Ser9), beta-catenin, and c-Myc, were reduced in response to CTPPU treatment, which suggested the targeting of Akt-dependent pathway, whereas CT-(4-OH)-PU had no effect on such cell growth regulatory signals. CTPPU induced G1/S cell cycle arrest in lung cancer cells. Immunofluorescence revealed that CTPPU decreased p-Akt and total Akt protein levels, which implied the effect of the compound on protein activity and stability. Next, we utilized in silico molecular docking analysis to reveal the potential molecular targets of CTPPU, and the results showed that the compound could specifically bind to the allosteric pocket of Akt and three sites of mTORC2 (catalytic site, A-site, and I-site), with a binding affinity greater than that of reference compounds. The compound cannot bind to PI3K, an upstream regulator of the Akt pathway. The effect of CTPPU on PI3K and Akt was confirmed. This finding indicated that the compound could decrease p-Akt but caused no effect on p-PI3K. Conclusions: The results indicate that CTPPU significantly inhibits NSCLC cell proliferation by inducing G1/S cell cycle arrest via the Akt/GSK-3 beta/c-Myc signaling pathway. Molecular docking revealed that CTPPU could interact with Akt and mTORC2 molecules with a high binding affinity. These data indicate that CTPPU is a potential novel alternative therapeutic approach for NSCLC.
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页数:22
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