摘要目的 探讨Yes-相关蛋白(Yes-associated protein,YAP)和大肿瘤抑制基因1(large tumor suppressor gene 1,LATS1)在肾透明细胞癌(renal clear cell carcinoma,RCCC)组织中的表达及意义. 方法 RCCC标本30例,男15例,女15例.年龄36～77岁,中位年龄63岁.Ⅰ～Ⅱ期17例,Ⅲ～Ⅳ期13例.高分化8例,中分化13例,低分化9例.采用逆转录聚合酶链反应及免疫组化技术检测30例RCCC组织及相应正常肾组织中YAP、LATS1 mRNA及其蛋白的表达,结合临床资料进行分析. 结果 RCCC组织中YAP mRNA表达量为0.569±0.066,正常肾组织为0.515±0.068,组间差异有统计学意义(P =0.003)；LATS1 mRNA表达量分别为0.454±0.115、0.514±0.093,组间差异有统计学意义(P =0.029).YAP蛋白表达阳性率分别为63.3％和33.3％,组间差异有统计学意义(P =0.020)；LATS1蛋白表达阳性率分别为46.7％和76.7％,组间差异有统计学意义(P=0.017).高、中、低分化组织中YAP蛋白表达阳性率分别为33.3％、61.5％、88.9％,组间差异有统计学意义(P=0.018)；LATS1蛋白表达阳性率分别为75.0％、53.8％、11.1％,组间差异有统计学意义(P=0.024).Ⅰ～Ⅱ、Ⅲ～Ⅳ期组织中YAP蛋白表达阳性率分别为47.1％、84.6％,组间差异有统计学意义(P =0.034)；LATS1蛋白表达阳性率分别为64.7％、23.1％,组间差异有统计学意义(P =0.024). 结论 YAP与LATS1在RCCC发生和发展过程中起重要作用,有望成为RCCC治疗的新靶点之一.

abstractsObjective To explore the expressions and significance of Yes-associated protein (YAP) and large tumor suppressor gene 1 ( LATS1 ) in renal clear cell carcinoma (RCCC). Methods There are 30 cases of RCCC,15 males and 15 females.The median age was 63 (36 - 77) years.There were 17 cases of stage Ⅰ - Ⅱ,13 cases of stage Ⅲ - Ⅳ.There were 8 cases well differentiated,13 cases moderately differentiated and 9 cases low differentiated.The expressions of YAP,LATS1 mRNA and proteins in 30 cases of RCCC and normal renal tissues were tested by RT-PCR and immunohistochemistry,and were analyzed with clinical data. Results The expression level of YAP mRNA in RCCC was higher than that in normal renal tissues (0.569 ± 0.066 vs 0.515 ±0.068,P =0.003 ),and the level of LATS1 mRNA in RCCC was lower than that in normal renal tissues (0.454 ± 0.115 vs 0.514 ± 0.093,P =0.029 ).The positive rate of YAP proteins in RCCC was obviously higher than that in normal renal tissues (63.3％ vs 33.3％,P =0.020),and the positive rate of LATS1 proteins in RCCC was lower than that in normal renal tissues (46.7％ vs 76.7％,P =0.017).The positive rate of YAP proteins was 33.3％ in well differentiated tissues,61.5％ in moderately differentiated tissues and 88.9％ in low differentiated tissues ( P =0.018),and the positive rate of LATS1 proteins was 75.0％ in well differentiated tissues,53.8％ in moderately differentiated tissues and 11.1％ in low differentiated tissues (P =0.024).The positive rate of YAP proteins was 47.1％ in stage Ⅰ - Ⅱ and 84.6％ in stage Ⅲ - Ⅳ ( P =0.034 ),and the positive rate of LATS1 proteins was 64.7％ in stage Ⅰ - Ⅱ,23.1％ in stage Ⅲ - Ⅳ ( P =0.024 ). Conclusion YAP and LATS1 play important roles in the development of renal clear carcinoma,and may become new targets in the treatment of RCCC.