Title:QSCR Analysis of Cytotoxicity of 6-Fluoro-3-(4H-1,2,4-triazol-3-
yl)quinolin-4(1H)-ones on Chinese Hamster Ovary Cell Line: Design
of REPUBLIC1986
Volume: 29
Issue: 2
关键词:
6-氟-3-(4H-1,2,4-三唑-3-基)喹啉-4(1H)-酮,中国仓鼠卵巢细胞系,卵巢癌,计算机辅助多元回归分析,定量结构细胞毒性关系(QSCR),轮廓图。
摘要: Background: 6-Fluoro-3-(4H-1,2,4-triazol-3-yl)quinolin-4(1H)-ones are promising
antitumor agents with enormous data on their profound cytotoxic effects on the human
cancer cell lines.
Objectives: We sought to perform a Quantitative structure cytotoxicity relationship (QSCR)
analysis of a series of previously reported fluoroquinolone analogues using computerassisted
multiple regression analysis and investigate the cytotoxicity-inducing structural parameters
among these congeners.
Methods: The dataset was segregated into training and test sets of 6-Fluoro-3-(4H-1,2,4-
triazol-3-yl)quinolin-4(1H)-ones by using a random selection method embedded in Vlife
MDS 4.6 software and subjected to QSCR analysis. Next, cross-validation of the generated
QSCR models was performed along with the external test set prediction. Finally, the data
was analyzed and contour plots were developed to deduce the cytotoxicity-inducing structural
parameters among these congeners using Minitab® software.
Results: The validated QSCR model exhibited a statistically significant predictive value of
92.27 percent. Our QSCR model revealed a direct proportionality between hydrogen counts
and cytotoxicity, and exclusion of sulphur and nitrogen with lesser crowding of cyclopropyl
rings in future potential 6-Fluoro-3-(4H-1,2,4-triazol-3-yl)quinolin-4(1H)-one analogues.
Based on the QSCR model predictions and contour plot analysis, the de novo REPUBLIC1986
molecule provided the best hit with predicted IC50 (μM) of 0.45 against CHO cell
line and is amenable to salt formation crucial for anti-ovarian cancer activity.
Conclusion: These findings suggest the relevancy of the developed QSCR model in designing
novel, potent, and safer anti-cancer drugs with 6-Fluoro-3-(4H-1,2,4-triazol-3-yl)quinolin-
4(1H)-ones as seed compounds.