三阴型乳腺癌中S1PR1、S1PR4的表达及其临床意义

摘要

目的 探讨1-磷酸神经鞘氨醇受体1(sphingosine-l phosphate receptor 1, S1PR1)和1-磷酸神经鞘氨醇受体4(sphingo-sine-1 phosphate receptor4, S1PR4)在三阴型乳腺癌(triple-negative breast carcinoma, TNBC)中的表达,分析两者与 TNBC临床病理特征的关系.方法 采用免疫组化SP法和图像分析软件检测72例TNBC中S1PR1、S1PR4和CD68的表达,分析 S1PR1、S1PR4与TNBC临床病理特征的相关性.结果 S1PR1高、中、低表达组的Ki-67增殖指数分别为48.89％、36.11％和26.48％,三组差异有统计学意义(P＜0.001).S1PR4高、中、低表达组的Ki-67增殖指数分别为42.83％、31.43％和28.93％,三组差异有统计学意义(P =0.007).S1PR1高、中、低表达组的淋巴结转移率分别为31.4％、48.6％和20.0％,差异有统计学意义(P =0.012).S1PR4高、中、低表达组的淋巴结转移率分别为54.3％、40.0％和5.7％,差异有统计学意义(P =0.010). S1PR1高、中和低表达组的CD68阳性率分别为47.22％、42.59％和31.48％,差异有统计学意义(P =0.036).不同S1PR1表达组间和不同S1PR4表达组间的TNBC生存率差异均无统计学意义(P = 0.209,P=0.593).结论 S1PR1、S1PR4高表达的 TNBC具有高增殖活性和淋巴结转移率,且肿瘤间质巨噬细胞数量增加,S1PR1、S1PR4表达与TNBC的生存无关.%Purpose To investigate the expression of sphingosine-1 phosphate receptor 1 (S1PR1) and sphingosine-1 phosphate receptor 4 (SIPR4) in triple negative breast carcinoma (TNBC) and to evaluate its correlation with the clinicopathologic features of TNBC. Methods 72 cases of tissue slides of TNBC were stained immunohistochemically and analyzed with image processing to calculate the S1PR1 and S1PR4 expression. Correlations of the S1PR1 and S1PR4 expression with the clinicopathologic features of TNBC were studied. Results Ki-67 index of high, moderate and low expression of the S1PR1 in TNBC were 48.89％, 36.11％ and 26.48％, respectively. The difference among them was significance (P＜0.001). Ki-67 index of high, moderate and low expression of the S1PR4 in TNBC were42.83％, 31.43％ and 28.93％, respectively. The difference among them was significance (P = 0.007 ). The positive rate of lymph node of high, moderate and low expression of the SI PR1 in TNBC were 31.4％, 48.6％ and 20.0％, respectively. The difference among them was significance (P = 0.012). The positive rate of lymph node of high, moderate and low expression of the S1PR4 in TNBC were 54.3％, 40.0％ and 5.7％, respectively. The difference among them was significance (P=0.010). The CD68 positive rate of high, moderate and low expression of the S1PR1 in TNBC were 47.22％, 42.59％ and31.48％, respectively. The difference among them was significance (P = 0.036). Both the difference of survive rate among high, moderate and low expression of the S1PR1 and S1PR4 were not significance (P = 0.209 and P =0.593 ). Conclusion High expression of S1PR1 and S1PR4 may contribute to the cellular proliferation and lymph node metastases in TNBC. The survive rate of TNBC maybe not related with both the S1PR1 and S1PR4 expression.