›› 2011, Vol. 23 ›› Issue (4): 298-301.doi: 10.3969/j.issn.1004-616x.2011.04.013

• 论著 • 上一篇    下一篇

BLT2拮抗剂的体外抗肿瘤效应

孙晓丽, 韩春光, 王 敏, 王立杰, 李海兵, 高志清, 王 琼, 刘永学*   

  1. 1.军事医学科学院放射与辐射医学研究所,北京 100850;2.中国人民解放军92117部队门诊部,北京 100072
  • 收稿日期:2011-01-18 修回日期:2011-05-02 出版日期:2011-07-30 发布日期:2011-07-30
  • 通讯作者: 刘永学

In vitro anti-tumor effect of BLT2 receptor antagonist LY255283

SUN Xiao-li1,HAN Chun-guang1,WANG Min2,WANG Li-jie,LI Hai-bing,GAO Zhi-qing,WANG Qiong,LIU Yong-xue*   

  1. 1. Institute of Radiation Medicine, Academy of Military Medical Sciences of PLA, Beijing 100850; 2. Out-patient Department, No. 92117 Forces of PLA, Beijing 100072, China
  • Received:2011-01-18 Revised:2011-05-02 Online:2011-07-30 Published:2011-07-30
  • Contact: LIU Yong-xue

摘要: 目的: 探讨白三烯B4受体BLT2拮抗剂LY255283对培养肿瘤细胞增殖的抑制作用。方法:RT-PCR法检测9种人源肿瘤细胞 (SMMC7721、A549、Bel7402、BGC823、Eca109、HeLa、HL60、MCF7和Pc3细胞)中BLT2的表达情况;MTT法分析LY255283 对上述体外培养肿瘤细胞的增殖抑制作用;流式细胞术及荧光显微镜分析LY255283对MCF7细胞凋亡的影响。结果:9种肿瘤细胞均检测到BLT2 mRNA的表达;LY255283明显抑制上述不同肿瘤细胞的增殖,其IC50值分别为0.21、11.17、1.28、5.9、7.9、1.59、0.14、1.25和31.28 μmol/L;在1.0和10.0 μmol/L两个作用浓度,LY255283诱导MCF7细胞凋亡的发生率分别为20.47%和37.47%,均明显高于空白对照组 (8.66%)和DMSO溶剂对照组 (11.71%) (P均<0.01)。结论:BLT2在9种人源肿瘤细胞均有表达,其特异拮抗剂LY255283具有抑制肿瘤细胞增殖效应,诱导细胞凋亡可能是其抗肿瘤的机制之一。

关键词: 白三烯B4, BLT2, LY255283, 肿瘤细胞

Abstract: OBJECTIVE: To study the inhibition effect of LY255283,a BLT2 receptor antagonist,on different human cancer cell lines. METHODS:The expressions of BLT2 receptor in SMMC7721、A549、Bel7402、BGC823、Eca109、HeLa、HL60、MCF7 and Pc3 cell were evaluated by RT-PCR. The inhibition effect of LY255283 on the nine tumor cell lines was analyzed by MTT assay. Apoptotic cells were evaluated by flow cytometry and fluorescence microscopy. RESULTS:All nine tumor cell lines expressed BLT2 receptors. LY255283 inhibited the proliferation of all nine tumor cell lines,the IC50 values were 0.21,11.17,1.28,5.9,7.9,1.59,0.14,1.25 and 31.28 μmol/L, respectively. The apoptotic rates of MCF-7 cells induced by LY255283 at 1 and 10 μmol/L were 20.47% and 31.28%,respectively,which were significantly increased compared with blank control group (8.66%) and DMSO control group (11.71%) (P<0.01). CONCLUSION:BLT2 receptor was expressed in nine human tumor cell lines,and the specific antagonist LY255283 could inhibit the proliferation of tumor cells probably by inducing apoptosis.

Key words: leukotriene B4, BLT2, LY255283, tumor cells