BRAF基因突变及其对分化型甲状腺癌钠碘同向转运体功能影响的研究进展

目的:总结分化型甲状腺癌中鼠类肉瘤滤过性毒菌(V-raf)致癌同源体B1(BRAF)基因突变与钠碘同向转运体(NIS)国内外研究进展,阐述BRAF和NIS基因结构表达与调控及BRAF基因突变对NIS功能的影响。方法:应用PubMed、Sciencedirect和万方检索系统,以"分化型甲状腺癌、钠碘同向转运体、BRAF、131I"为关键词,检索1998-2010年相关文献95篇。纳入标准:1)NIS结构与功能;2)NIS与分化型甲状腺癌的关系;3)BRAF结构与功能;4)BRAF突变与分化型甲状腺癌的关系;5)BRAF突变与NIS表达在分化型甲状腺癌中的关系。根据纳入标准分析文献23篇。结果:甲状腺癌131I治疗通过NIS介导。NIS的表达可以预测复发DTC131I的聚集和131I疗效评价。BRAF突变在PTC中可作为不良影响因子,影响PTC的发生、侵袭及预后。BRAF基因突变能引起NIS表达下降(20%～80%),病灶摄碘能力降低。NIS的表达水平在含有BRAF V600E突变的PTC中明显降低。结论:BRAF基因突变能引起NIS表达下降,降低病灶碘治疗疗效。因此,BRAF基因突变有望成为预测甲状腺癌放射性碘治疗疗效的指标。

BRAF mutation and its influence on function of NIS in differentiated thyroid cancer

OBJECTIVE:To review the recent advance on NIS and BRAF gene of differentiated thyroid cancer,to clarify the relationship between the two above genes in terms of structure,expression and regulation.METHODS: keywords such as differentiated thyroid cancer,NIS,BRAF and 131I were used to search the full text database from PubMed,ScienceDirect and Wanfang database.Literatures were retrieved from 1998 to 2010,and 23 were finally analyzed according to the inclusion criteria as follows:1)The structure and function o...