Title:Synthesis and Selective Anticancer Activity Evaluation of
2-phenylacrylonitrile Derivatives as Tubulin Inhibitors
Volume: 31
Issue: 15
Author(s): Ye-Zhi Jin, Ya-Bing Xin, Yuan Li, Xin-Yuan Chen, De-Ao Man and Yu-Shun Tian*
Affiliation:
- Key Laboratory of Natural Medicines of the Changbai Mountain, Department of Medicinal Chemistry, Ministry
of Education, College of Pharmacy, Yanbian University, Yanji, 133002, Jilin Province, P.R. China
Keywords:
2-Phenylacrylonitrile, selective toxic effect, cell cycle arrest, apoptosis, xenograft model, tubulin inhibitor.
Abstract:
Objective: This study aimed at synthesizing 13 series of novel derivatives
with 2-phenylacrylonitrile, evaluating antitumor activity both in vivo and in vitro, and
obtaining novel tubulin inhibitors.
Methods: The 13 series of 2-phenylacrylonitrile derivatives were synthesized by Knoevenagel
condensation and the anti-proliferative activities were determined by MTT assay.
The cell cycle and apoptosis were analyzed by flow cytometer. Quantitative cell migration
was performed using 24-well Boyden chambers. The proteins were detected by
western blotting. in vitro kinetics of microtubule assembly was measured using ELISA
kit for Human β-tubulin (TUBB). Molecular docking was done by Discovery Studio (DS)
2017 Client online tool.
Results: Among the derivatives, compound 1g2a possessed strong inhibitory activity
against HCT116 (IC50 = 5.9 nM) and BEL-7402 (IC50 = 7.8 nM) cells. Compound 1g2a
exhibited better selective antiproliferative activities and specificities than all the positive
control drugs, including taxol. Compound 1g2a inhibited proliferation of HCT116 and
BEL-7402 cells by arresting them in the G2/M phase of the cell cycle, inhibited the migration
of HCT116 and BEL-7402 cells and the formation of cell colonies. Compound
1g2a showed excellent tubulin polymerization inhibitory activity on HCT116 and
BEL-7402 cells. The results of molecular docking analyses showed that 1g2a may inhibit
tubulin to exert anticancer effects.
Conclusion: Compound 1g2a shows outstanding antitumor activity both in vivo and in
vitro and has the potential to be further developed into a highly effective antitumor
agent with little toxicity to normal tissues.