目的:了解小窝蛋白-1( Cav-1)在食管癌患者血清中的表达情况,探讨Cav-1是否可以作为食管癌肿瘤标记物。方法⑴用Western Blot方法检测食管癌细胞EC109、EC9706中Cav-1的表达情况;⑵收集本院43例食管癌患者血清,30例良性食管病变患者血清及50例健康体检者血清,应用ELISA方法检测其Cav-1的表达情况。结果⑴Western Blot 结果显示,Cav-1在食管癌细胞EC109、EC9706中均表达;在低分化的食管癌细胞EC109中表达水平明显高于高分化的食管癌细胞EC9706( t =3.08, P =0.035)。⑵ELISA结果显示,食管癌患者血清Cav-1中位数为0.104 ng/ml;良性食管病变患者血清Cav-1中位数为0.075 ng/ml;健康体检者血清Cav-1中位数为0.081 ng/ml;食管癌患者血清与良性食管病变及健康体检者对比,差异有统计学意义(χ2=23.16, P =0.001)。结论 Cav-1在食管癌患者血清中的表达高于良性食管病变患者及健康体检者,有望成为食管癌肿瘤标志物。