受体酪氨酸激酶基因及其变异体在膀胱肿瘤组织中的表达及意义  被引量:1

Significance of tyrosine kinase receptor gene and its variant expressions in bladder tumor tissues

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作  者:郭飞[1] 陈玉华[1] 刘永霞[1] 朱小丽[1] 陈伟[2] 胡王强[1] 陈占国[1] 沈默[1] 陶志华[1] 

机构地区:[1]温州医学院附属第一医院检验科,325000 [2]温州医学院附属第一医院泌尿外科,325000

出  处:《中华检验医学杂志》2011年第9期830-835,共6页Chinese Journal of Laboratory Medicine

基  金:国家自然科学基金资助项目(30872421)

摘  要:目的探讨RONmRNA及其变异体在膀胱肿瘤组织中的表达与临床意义。方法选择63例膀胱移行上皮癌(TCCB)、7例膀胱内翻性乳头状瘤(IPB)、9例膀胱低度恶性潜能尿路上皮瘤(PUNLMP)患者和12例外伤性膀胱破裂且经病理证实无肿瘤细胞的正常膀胱黏膜组织患者。其中,病理Ⅰ、Ⅱ和Ⅲ级患者分别为30、15和18例,临床Tis+T1和T2+t3+T4期患者分别为44例和15例;用实时荧光定量RT-PCR检测其RONmRNA相对表达量,以GAPDHmRNA为内标物,用RONmRNA/GAPDHmRNA比值表示RONmRNA相对表达量;用RT—PCR检测RONmRNA选择性剪切形成的变异体;用测序检测PCR产物中可能存在的变异体,并分析变异体在不同组织问及TCCB中不同病理分级及临床分期间阳性表达率的差异。结果RONmRNA在TCCB、IPB、PUNLMP及正常膀胱黏膜组织中均见阳性表达,其RONmRNA/GAPDHmRNA比值分别为4.9×10^-3(1.8×10^-3-1.0×10^-2)、3.8X×10^-3(2.4×10^-3.1.7×10^-2)、4.9×10^-3(1.7×10^-3-1.1×10^-2)、1.0×10^-3(4.5×10^-4~2.8×10^-3),且不同组织间的表达差异均有统计学意义(zK.W^2=17.278,P〈0.05);RONmRNA/GAPDHmRNA比值在TCCB病理Ⅰ、Ⅱ、Ⅲ级分别为3.7×10^-3(1.3×10^-3~7.5×10^-3)、4.9×10^-3(1.9×10^-3~1.1×10^-2)、8.9×10^-3(2.7×10^-3-8.0×10^-2),且差异有统计学意义(xK.W^2=7.341,P〈0.05);RONmRNA/GAPDHmRNA比值在TCCB临床Tis+T1、他+13+T4期分别为3.5×10^-3(1.2×10^-3-7.7×10^-3)、9.7×10^-3(2.9×10^-3-5.3×10^-2),差异也有统计学意义(Z=-2.306,P〈0.05)。但正常膀胱黏膜组未发现RONretINA变异体,而在膀胱肿瘤组织中外显子11剪切缺失(E11△)的阳性表达率为70%(55/79)。在TCCB、IPB、PUNLMP中E11A阳性表达率分别为71%(45/63)、57%(4/7)、67%(6/9),而不同病理组织中的E11A阳性表达Objectives To explore the clinical significance of tyrosine kinase receptor RON mRNA expression and it's splicing variant in bladder tumors. Methods Sixty-three cases of transitional cell carcinoma of the bladder (TCCB) , including 30 cases of pathological grade Ⅰ , 15 cases of pathological grade Ⅱ and 18 cases of pathological grade Ⅲ (44 cases of clinical stage Tis + T1, 15 cases of T2 + T3 + T4), 7 inverted papilloma of the bladder (IPB), 9 cases of papillary nrothelial neoplasm of low malignant potential (PUNLMP) and 12 cases of normalbladder mucosa RT-PCR was employed with the internal standard (GAPDHmRNA) to detect the expression of RON mRNA. PCR and direct sequencing was then utilized to identify the potential RON mRNA splicing variants. Finally, the variants' positive rates of expression were analyzed among the different tissues, diverse TCCB pathological grades and clinical stages. Results The expression levels of RON mRNA/GAPDH mRNA among TCCB, IPB, PUNLMP and normal control were 4.9×10^-3 ( 1.8 ×10^-3-1.0×10^-2 ), 3.8×10^-3 (2.4 ×10^-3-1.7 ×10^-2 ) , 4. 9 ×10^-3 ( 1.7 ×10^-3-1. 1 ×10^-2 ) and 1.0 ×10^-3 (4. 5 ×10^-4-2. 8×10^-3 ) respectively. The difference had a ( Xk.w^2 = 17. 278, P 〈 0. 05 ). The expression levels among pathological grade I, II and statistical significance 2 III were 3.7 ×10^-3(1.3×10^-3-7.5×10^-3) , 4.9 ×10^-3(1.9 ×10^-3-1. 1×10^-2) and 8.9 ×10^-3(2. 7 ×10^-3 -8.0 ×10^-2 ) respectively. The expression levels among the clinical stage Tis + T1 and T2 + T3 + T4 were 3.5 ×10^-3 ( 1.2×10^-3-7.7×10^-3 ) and 9. 7×10^-3 (2. 9×10^-3-5.3×10^-2 ). The differences between expression levels were of statistical significance among the different pathological grades ( X2k.w = 7. 341, P 〈 0. 05 ) and clinical stages ( Z = - 2. 306, P 〈 0. 05 ). The positive rates of exon 11 deletion (EllA) in TCCB, IPB and PUNLMP were Tl% (45/63), 57% (4/7)and67% (6/9)respectivel

关 键 词:膀胱肿瘤 受体蛋白质酪氨酸激酶类 选择性剪接 

分 类 号:R737.14[医药卫生—肿瘤]

 

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