异氟醚和七氟醚对人肺癌细胞株A549细胞凋亡及CD44和CD54表达的影响

Effects of isoflurane and sevoflurane on apoptosis and expression of CD44 and CD54 in human lung cancer cell line A549

目的 评价异氟醚和七氟醚对人肺癌细胞株A549细胞凋亡及CD44和CD54表达的影响.方法 人肺癌细胞株A549接种于24孔培养板中,培养24 h后,随机分为对照组（C组）、异氟醚组（Iso组）和七氟醚组（Sev组）,每组8孔.将培养板置于无菌密闭容器内,再置于37℃恒温水浴箱中.C组通入95%O2-5%CO2混合气体2 L/min,维持4 h;Iso组通入95%O2-5%CO2混合气体2 L/min 和异氟醚,维持异氟醚浓度1.7%4 h;Sev组通入95%O2-5%CO2混合气体2 L/min和七氟醚,维持七氟醚浓度2.5%4 h.处理完成后,放回37℃、5%CO2,培养箱中,继续培养24 h.分别于处理前、处理2、4 h和处理后24 h时,取A549细胞,检测细胞凋亡情况,计算细胞凋亡率;测定CD44和CD54的表达水平.结果 与处理前比较,Iso组处理4 h和处理后24 h时细胞凋亡率升高,Sev组处理2、4 h和处理后24 h时细胞凋亡率升高,Iso组和Sevo组处理2、4 h和处理后24 h时CD44和CD54表达下调（P〈0.05）;与C组比较,Iso组处理4 h和处理后24 h时细胞凋亡率升高,Sev组处理2、4 h和处理后24 h时细胞凋亡率升高,Iso组和Sevo组处理2、4 h和处理后24 h时CD44和CD54表达下调（P〈0.05）;与Iso组,Sevo组处理2、4 h和处理后24 h时细胞凋亡率升高（P〈0.05）,CD44和CD54表达差异无统计学意义（P〉0.05）.结论 异氟醚和七氟醚均可诱导人肺癌A549细胞凋亡,其中七氟醚作用较强.异氟醚和七氟醚均可抑制人肺癌A549细胞CD44和CD54的表达.

Objective To investigate the effects of isoflurane and sevonumne on apoptosis and expression of CD44 and CD54 in human lung cancer cell line A549.Methods Human lung cancer A549 cells were obtained from Shanghai Cell Biology Medical Research Institute,Chinese Academy of Sciences,and inoculated in 24 well culture plate.After being cultured for 24 h the cells were randomly divided into 3 groups：group Ⅰ control（group C）;group Ⅱ isoflurane （group Iso） and group Ⅲ sevoflurane （group Sev）.A 549 cells were exposed to 1.7% isoflurane and 2.5%sevoflurane for 4 h respectively in group Iso and Sev respectively,and were then cultured for another 24 h.Apoptosis and expression of CD44 and CD54 in A549 cells were detected with flow cytometer at 0 （T0）,2 h（T1） and 4 h（T2） of and 24 h after（T3） exposure to isoflurane and sevoflurane.Results The percentage of apoptotic cells wag significantly higher at T2 and T3 in group Iso than in group C.The percentage of apoptotic cells was significantly higher at T1,T2 and T3 in group Sev than in group Iso and C.The expression of CD44 and CD54 at T1,T2 and T3 was significantly decreased as compared with the baseline at T0 in group Iso and Sev and was significantly lower in group Iso and Sev than in group C.Conclusion Isoflurane and sevoflurane can induce apoptesis of human lung cancer cell line A549, and sevoflurane is more effective. Isoflurane and sevoflurane can inhibit the expression of CD44 and CD54 of human lung cancer cell line A549.