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DMSO),ST group(20 μmol/L),ST+NSC228155 group [20 μmol/L ST+100 μmol/L NSC228155(EGFR agonist)] and ST+SC79
group [20 μmol/L ST+20 μmol/L SC79(PI3K/Akt agonist)]. The proliferation,migration and invasion ability of SCL-1 cells in
each group were detected by CCK-8 assay,scratch test and Transwell chamber invasion assay. The expression of epidermal growth
factor receptor(EGFR),phosphatidylinositol 3 kinase(PI3K),phosphorylated phosphatidylinositol 3 kinase(p-PI3k),protein
kinase B (Akt) and phosphorylated protein Akt (p-Akt) protein of cells in blank control group and ST different concentration
groups(5,10,20 μmol/L)were determined by Western blot assay so as to validate the relationship between ST effect and EGFR/
PI3K/Akt signaling pathway. SCL-1 cells and human normal skin fibroblasts cell WS1 were divided into blank control group(0.1%
DMSO),ST group(20 μmol//L),ZD1839 group(positive control,20 μmol//L,EGFR inhibitor)and LY294002 group(positive
control,20 μ mol//L,PI3K/Akt inhibitor). CCK-8 assay was used to detect the cell proliferation in order to evaluate the cells
cytotoxicity of ST. RESULTS:Compared with blank control group,the proliferation,migration and invasion ability of SCL-1 cells
were significantly decreased in 5,10,20 μmol/L ST groups(P<0.05). Western blot and immunofluorescence assay showed that
the expression of N-cadherin in SCL-1 cells were decreased significantly in 5,10,20 μmol/L ST groups(P<0.05),while the
protein expression of E-cadherin was increased significantly(P<0.05);the protein expressions of EGFR,p-PI3K and p-Akt were
significantly decreased(P<0.05). Compared with ST group,the proliferation,migration and invasion ability of SCL-1 cells were
increased significantly in ST + NSC228155 group and ST + SC79 group (P<0.05). Compared with blank control group,the
proliferation ability of WS1 cells had no significant change in ST group,while the proliferation ability of SCL-1 cells was
decreased significantly(P<0.05);the proliferation ability of the two kinds of cells were decreased significantly in ZD1839 group
and LY294002 group(P<0.05). Compared with ST group,the proliferation ability of WS1 cells was decreased significantly in
ZD1839 group and LY294002 group(P<0.05),but there was no significant difference in the proliferation ability of SCL-1 cells
(P>0.05). CONCLUSIONS:ST may inhibit the proliferation,EMT and metastasis of SCL-1 cells through inhibiting the
activation of EGFR/PI3K/Akt signaling pathway,and its side effects are few.
KEYWORDS Sinapine thiocyanate; Human cutaneous squamous cell carcinoma SCL-1 cells; Proliferation; Epithelial
mesechymal transition;Metastasis;EGFR/PI3K/Akt signaling pathway
皮肤鳞状细胞癌多为表皮肿瘤,常采用手术方法进 响,并从EGFR/PI3K/Akt信号通路出发初步分析其分子
行治疗,但治疗后容易复发和转移;复发后,多采用放化 作用机制,为 ST 药用价值的进一步开发以及将其用于
疗方法进行治疗,治疗风险较高 [1-2] 。因此,寻找一种安 临床治疗皮肤鳞状细胞癌提供可行的参考依据。
全的新型药物对于治疗复发和转移性皮肤鳞状细胞癌 1 材料
较为重要。皮肤鳞状细胞癌易发生远处转移,其中上皮 1.1 主要仪器
[3]
间质转换(EMT)是其转移的重要机制之一 。EMT 是 HHM-SY96S型多功能酶标仪购自深圳恒美生物科
细胞由上皮表型转化为间质表型的过程,其与多种细胞 技有限公司;54-03003 型倒置光学显微镜购自德国
生物的正常胚胎发育相关,但同时也与肿瘤的发生发展 Bresser 公 司 ;GelDoc XR 型 凝 胶 成 像 仪 购 自 美 国
[4]
相关 。在皮肤鳞状细胞癌的发展过程中,原柱状的正 Bio-Rad 公司;LV100ND 型荧光显微镜购自日本 Nikon
常上皮细胞会逐渐变为梭形的间质细胞,此时上皮细胞 公司;DYCP-31DN型电泳仪、DYCZ-40D型转膜仪均购
的极性消失,失去了原本与基底膜连接的上皮表型特 自北京六一生物科技有限公司;D-650 型水平细胞超净
[5]
征,从而获得迁移、侵袭、抗凋亡等间质表型功能 。 工作台购自江苏常州如益科技有限公司;303-5B型二氧
表皮生长因子受体(EGFR)是细胞增殖、发育所必 化碳培养箱购自上海尚仪生物科技有限公司。
[6]
需的受体 。当表皮生长因子与其配体在细胞外结合后 1.2 主要药品与试剂
形成二聚体,此二聚体可使细胞内酪氨酸发生磷酸化并 ST 原料药(批号 7431-77-8,纯度>98%)购自成都
激活下游细胞内的信号级联,激活磷脂酰肌醇 3 激酶 仪睿生物科技有限公司;EGFR 激动剂 NSC228155、
[7]
(PI3K)/蛋白激酶B(Akt)途径 ,而该途径与癌细胞的增 PI3K/Akt 激动剂 SC79、EGFR 抑制剂 ZD1839 和 PI3K/
[8]
殖、迁移和侵袭等恶性行为密切相关 。 Akt 抑 制 剂 LY294002(批 号 分 别 为 HY-101084、HY-
芥子碱硫氰酸盐(ST)是从十字花科药用植物中提 18749、HY-50895、HY-10108,纯度均大于 99%)均购自
取得到的一种木脂素类化合物,具有抗炎、抗衰老、抗氧 美国 MCE 公司;RPMI 1640 培养基、胎牛血清(FBS)、
化、抗肿瘤等多种药理作用 ,具有较大的开发价值。有 0.25%胰蛋白酶[含乙二胺四乙酸(EDTA)]溶液均购自
[9]
报道指出,ST能够抑制小鼠的血脂血糖升高、动脉粥样 美国Gibco公司;CCK-8试剂盒(批号BS350A)购自上海
硬化和肝细胞脂肪变性 [10-11] ;此外,ST 对肝癌细胞的增 白鲨生物科技有限公司;Transwell小室(批号30419069)
[12]
殖和转移有抑制作用 。然而,ST对皮肤鳞状细胞癌的 购自美国Corning公司;Matrigel胶(批号2446ML005)购
影响及作用机制尚不清楚。因此,本研究拟探讨 ST 对 自德国Biofroxx公司;苯甲基磺酰氟(PMSF)、RIPA裂解
人皮肤鳞状细胞癌 SCL-1 细胞增殖、EMC 和转移的影 液均购自福州飞净生物科技有限公司;十二烷基硫酸
中国药房 2021年第32卷第8期 China Pharmacy 2021 Vol. 32 No. 8 ·953 ·