鼻咽癌中转化生长因子β受体及受体相关蛋白—1的原位表达

目的 研究转化生长因子β（ＴＧＦβ）、其受体及受体相关蛋白－１（ＴＲＩＰ－１）在鼻咽低分化鳞癌中的表达状况。方法 采用免疫组化技术及原位分子杂交技术，检测同一例标本中癌旁上皮和癌细胞内的３型ＴＧＦβ，２种受体的蛋白水平和ＴＲＩＰ－１ｍＲＮＡ水平，分析其变化规律。结果 ＴＧＦβ１、ＴＧＦβ２、ＴＧＦβ３、ＴＧＦβＲＩ、ＴＧＦβⅡ在癌旁上皮表达强于癌组织的百分数分别为６５．７９％、６６．６７％、５５．

The expression in situ of transforming growth factor beta s, their receptors and TGF beta-receptor interacting protein-1 in nasopharygneal carcinoma]

OBJECTIVE: To study the expression of transforming growth factor(TGF) beta s, their receptors and TGF beta-receptor interacting protein-1 (TRIP-1) in nasopharygneal carcinoma. METHODS: Immunohistochemical technology and in situ hybridization methods were adopted to detect the TRIP-1 mRNA and 3 kinds of TGF beta isoforms and 2 kinds of TGF beta receptors protein in the same biopsy specimen. RESULTS: The positive expression of TGF beta 1, TGF beta 2, TGF beta 3, TGF beta R I and TGF beta R II was stronger in the tumor adjacent epithelium than in the tumor itself, which were 65.79%, 66.67%, 55.26%, 48.57% and 63.16% higher than those in the tumor itself respectively(P < 0.01). The level of TRIP-1mRNA measured in the epithelial cells was also higher than that in the tumor cells (19.32 +/- 10.70 versus 11.96 +/- 5.85, P < 0.05). CONCLUSION: The signal transmission of TGF beta family is diminished in the poorly differentiated squamous cell carcinoma of nasopharynx. It may be a factor for the development of nasopharygneal carcinoma.