摘要
目的探讨乙酰基-11-酮基-β-乳香酸(acetyl-11-keto-beta-boswellic acid,AKBA)对人体结肠癌细胞HCT-116的抑制作用及作用机制,并比较其与阿斯匹林(aspirin,ASA)差异。方法选用人结肠癌细胞HCT-116,噻唑蓝比色法(MTT)法检测AKBA及ASA对HCT-116增殖的抑制作用,Hochest 33258法检测AKBA及ASA诱导HCT-116细胞凋亡作用,蛋白质印迹法检测AKBA及ASA对凋亡相关蛋白Bcl-2、Bax、Caspase-3、Caspase-9、cleaved PARP、p53通路相关蛋白ATM和p53以及炎症相关蛋白NF-κB和COX-2等表达的影响。结果 1)AKBA和ASA对结肠癌HCT-116增殖的抑制作用呈现剂量依赖性,当AKBA浓度<60μmol/L,ASA浓度<1.25mmol/L时,对HCT-116的抑制作用较弱,P>0.05;AKBA对HCT-116增殖的IC50为(104.58±6.53)μmol/L,ASA为(6.47±0.57)mmol/L,AKBA的抑制活性更强,P<0.001。2)AKBA及ASA均可诱导HCT-116凋亡,表现为典型的细胞凋亡形态改变。与溶媒对照组相比,AKBA和ASA对许多与凋亡和炎症相关蛋白表达的影响差异有统计学意义。3)AKBA 100μmol/L对Bax/Bcl-2比值的上调作用为(46.07±0.64)%,P<0.001;Caspase-9为(277±10.25)%,P<0.001;PARP为(448.27±9.85)%,P<0.001;p-ATM为(213.26±6.42)%,P<0.001;p53为(176.22±5.78)%,P<0.001。对Pro-Caspase-9表达的下调作用为(16.43±0.94)%,P=0.008;Survivin为(63.34±2.64)%,P<0.001;PCNA为(47.30±2.53)%,P<0.001;ATM为(72.47±3.05)%,P=0.004;p-NF-κB为(30.60±1.32)%,P<0.001;NF-κB为(25.92±1.64)%,P<0.001;COX-2为(63.57±3.42)%,P<0.001。4)ASA 8 mmol/L对Bax/Bcl-2比值的上调作用为(83.67±4.77)%,P<0.001;Caspase-9为(136.36±7.65)%,P<0.001;PARP为(470±9.47)%,P<0.001;p-ATM为(168.08±4.46)%,P<0.001;p53为(80.66±3.14)%,P=0.004。对Pro-Caspase-9表达的下调作用为(33.12±2.45)%,P=0.008;Survivin为(50.44±1.72)%,P=0.008;PCNA为(11.51±1.69)%,P=0.153;ATM为(71.48±2.97)%,P=0.004;p-NF-κB为(27.45±0.76)%,P<0.001;NF-κB为(33.70±2.14)%,P<0.001;COX-2为(33.44±1.27)%,P<0.001。5)AKBA与ASA相比较,对Caspase-9(P=0.002)、PCNA(P=0.006)、p-ATM(P=0.010)、p53(P
OBJECTIVE To explore and compare the efficacy of acetyl-11-keto-beta-boswellic acid (AKBA) on the growth of human colonic carcinoma cells with Aspirin. METHODS The viability of cancer cells was evaluated using MTT method. The apoptosis cells were determined by Hochest33258 staining assay. The proteins of caspase-9-dependent pathway and ATM/P53 pathway and the inflammatory factors were detected by Western blotting assay. RESULTS AK- BA strongly inhibited the proliferation of HCT-116, the IC50 of AKBA was (104. 58 ±6. 53) μmol/L and ASA was (6.47±0.57) mmol/L,P〈0. 001. AKBA and ASA induced cancer cells apoptosis. Compared with the vehicle, AKBA in 100 pmol/L can up regulate the expression of Bax/Bcl-2, caspase-9, PARP, p ATM separately by(46.07 ± 0.64)% (P〈 0.001),(277±10.25)%(P〈0.001),(448.27±14. 33)% (P〈0. 001), (213. 26±6.42)% (P〈0. 001), (176. 22± 5.78) % (P〈0.001 ), and can down regulate the expression of Pro-Caspase-9, Survivin, PCNA, ATM, p-NF-κB, NF-κB, COX-2 separately by (16.43±0.94)% (P=0.008),(63.34±2.64)% (P±0.001), (47.30±2.53)% (P〈0.001), (72.47±3.05)% (P=0.004),(30.60+1.32)% (P〈0.001),(25.92±1. 64)%(P〈0.001),(63.57+3.42)% (P〈 0. 001); ASA in 8 mmol/L can up regulate the expression of Bax/Bcl-2, Caspase-9, PARP, p-ATM, p53 separately by (83.67±4.77)% (P〈0.001), (136.36±7.65)% (P〈0.001),(470±14.47)% (P〈0.001),(168.08±4.46)% (P〈 0. 001), (80.66+3.14)± (P=0. 004),and can down the expression of Pro Caspase-9,Survivin,PCNA,ATM,p-NF-±B, NF-κB,COX-2 separately by (33.12±2.45)G (P=0.008),(50.44±_1.72)% (P=0.008),(11.51±1. 69)% (P= 0. 153),(71.48±2.97) % (P=0. 005),(27.45+0.76)G (P〈0. 001),(33. 704-2.14)% (P〈0. 001),(33.44±1.27) (P±0. 001). 3)Compared with ASA, AKBA has a distinct influence in the expression of Caspase-9 (P = 0. 002),
出处
《中华肿瘤防治杂志》
CAS
北大核心
2015年第2期103-108,共6页
Chinese Journal of Cancer Prevention and Treatment