摘要
为了探讨氟喹诺酮均三唑稠杂环类衍生物(FQTHs)体外抗肿瘤作用的微观机理,建立其对中国仓鼠卵巢细胞(CHO)、鼠白血病细胞(L1210)和人白血病细胞(HL60)等的体外抗肿瘤活性(A_j:A_C、A_L、A_H)与量化参数Q_t的定量结构-活性相关性(QSAR)模型。采用半经验计算法MOPAC-AM1计算15种化合物的量化参数(Qt,如E_(HOMO)、E_(LUMO)、μ、Q_(Cd)、Q_(Ne)、Q_(Of)、Q_F、Q_S等)。运用最佳变量子集回归方法建立FQTHs体外抗肿瘤活性的QSAR模型。A_C的最佳三元线性回归模型的判定系数R^2和逐一剔除法交叉验证系数R_(cv)~2分别为0.910和0.827,A_L对应的R^2和R_(cv)~2分别为0.874和0.815,A_H对应的R^2和R_(cv)~2分别为0.941和0.894。通过R^2、R_(adj)~2、F、R_(cv)~2、V_(IF)、A_(IC)、F_(IT)等检验证明上述模型具有稳健性和预测能力。模型显示Q_(Cd)、Q_(Ne)、Q_(Of)和μ直接影响15种化合物的生物活性。
Quantitative structure-activity relationships ( QSAR) models of the antitumor activities(Aj:AC、AL and AH) and quantum chemical parameters Qt for Chinese hamster ovary (CHO) ,Mice leukemia cell( L1210 ) , Human leukemic cell ( HL60 ) are set up to study the antitumor mechanisms at the microscale of 15 s-triazole fused heterocycle derivatives of fluoroquinolone ( FQTHs) . The quantum chemical parameters (Qt,such as EHOMO、ELUMO、μ、QCd、QNe、QOf、QF、QS) above mentionedcompounds are calculated using the M0PAC-AM1 method. The QSAR models of the antitumor activities for FQTHs are established using leaps- and-bounds regression. The correlation coefficients (R^2)and leave- one- out( LOO) cross validation R^2CV of the optimal three-parameter QSAR models are 0. 910 and 0. 827 for AC model, 0. 874 and 0. 815 for AL model, 0. 941 and 0. 894 for AH model, respectively. The QSAR models have both favorable robustness and good prediction capability by R^2、R^2adj、F、R^2CV、VIF、AIC、FIT tests. The QSAR models mentioned above show that QCd、QNe、QOf and μ affectthe antitumor activity directly.
出处
《南京理工大学学报》
EI
CAS
CSCD
北大核心
2017年第3期393-398,共6页
Journal of Nanjing University of Science and Technology
基金
国家自然科学基金(21075138)
结构化学国家重点实验室开放基金(20160028)
徐州工程学院科研项目(XKY2012307
XKY2013103)