莪术提取物榄香烯对多种癌细胞增殖、侵袭及肿瘤相关钙信号传导蛋白-2基因表达的影响

Effects of curcuma extract-elemene on proliferation, invasion and tumor-associated calcium signal transducer-2 gene expression of various cancer cells

目的 探讨莪术提取物榄香烯对多种人癌细胞增殖、侵袭的影响及其机制.方法 采用不同浓度的榄香烯处理人食管癌TE-1和Ca-ES-17细胞、喉鳞癌Hep-2细胞、肺癌NCI-H1975细胞、大肠癌SW-480细胞、前列腺癌PC-3细胞后,以噻唑蓝（MTT）方法检测癌细胞增殖,以Boyden小室方法检测癌细胞侵袭能力,以实时荧光定量聚合酶链反应（FQ-PCR）方法检测癌细胞肿瘤相关钙信号传导蛋白（TROP）-2基因mRNA水平.结果 榄香烯对各组癌细胞增殖均有一定的抑制作用,且呈浓度依赖性.72 h后食管癌TE-1和Ca-ES-17细胞、喉鳞癌Hep-2细胞、肺癌NCI-H1975细胞、大肠癌SW-480细胞、前列腺癌PC-3细胞半数抑制剂量（IC5o）分别为43.919、189.036、48.690、75.538、35.145、31.063 mg/L.Boyden小室方法检测显示,榄香烯对以上各组癌细胞侵袭均有明显的抑制作用,食管癌TE-1和Ca-ES-17细胞、喉鳞癌Hep-2细胞、肺癌NCI-H1975细胞、大肠癌SW-480细胞、前列腺癌PC-3细胞侵袭抑制率分别为25.6％、18.9％、23.8％、22.2％、26.5％、27.8％.FQ-PCR方法检测显示,各组癌细胞均呈较高TROP-2 mRNA水平,经榄香烯处理后,各癌细胞TROP-2 mRNA水平均被明显抑制,食管癌TE-1和Ca-ES-17细胞、喉鳞癌Hep-2细胞、肺癌NCI-H1975细胞、大肠癌SW-480细胞、前列腺癌PC-3细胞TROP-2基因mRNA抑制率分别为35.8％、25.6％、32.5％、25.6％、29.8％、33.6％.结论 榄香烯对多种癌细胞增殖侵袭均有明显的抑制作用,下调TROP-2表达可能是其重要机制之一.

Objective To study the effects and mechanism of curcuma extract-elemene on proliferation,invasion and tumor-associated calcium signal transducer-2 （TROP-2） gene expression of various cancer cells.Methods Human esophageal carcinoma TE-1 and Ca-ES-17 cells,laryngeal squamous cell carcinoma Hep-2 cells,lung cancer NCI-H1975 cells,colorectal cancer SW-480 cells,and prostate cancer PC-3 cells were prepared.After all group cancers were treated with different doses of elemene,and proliferation of cancer cells was studied by methyl thiazol tetrazolium （MTT） assay,and invasion ability was determined by Boyden chamber assay.TROP-2 mRNA level was detected by real-time fluorescent quantitative polymerase chain reaction （FQ-PCR）.Results Elemene has an inhibitory effect on all group cancer cells in a dose-dependent manner.The MTT assay showed that the inhibition rate of proliferation was 43.919,189.036,48.690,75.538,35.145,and 31.063 mg/L in TE-1,Ca-ES-17,Hep-2,NCI-H1975,SW-480,and PC-3 cells,respectively.The Boyden chamber test showed that the inhibition rate of invasion was 25.6%,18.9%,23.8%,22.2%,26.5%,and 27.8% in TE-1,Ca-ES-17,Hep-2,NCI-H1975,SW-480,and PC-3,respectively.The FQ-PCR assay showed that the inhibition rate of TROP-2 mRNA was 35.8%,25.6%,32.5%,25.6%,29.8%,and 33.6% in TE-1,Ca-ES-17,Hep-2,NCI-H1975,SW-480,and PC-3,respectively.Conclusion Elemene could reduce cell proliferation and invasion of various cancer cells through down-regulation of TROP-2 gene.