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Expression of tumor metastasis-suppressor gene KiSS-1 in breast cancer patients with brain metastases and its clinical significance
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF NEUROMEDICINE
- Issue:
- 8
- DOI:
- 10.3760/cma.j.issn.1671-8925.2005.08.001
- Key Word:
- 脑转移瘤;乳腺肿瘤;肿瘤转移抑制基因;定量RT-PCR
Abstract： 目的转移抑制基因KiSS-1在多种肿瘤的浸润转移中起着重要的作用.但该基因与乳腺癌脑转移的关系仍很不清楚.本研究检测了乳腺癌原发灶和脑转移灶中KiSS-1基因的表达并探讨其临床意义.方法选择2002年6月～2004年6月行乳腺癌脑转移病灶切除的患者12例,应用实时荧光定量PCR检测乳腺癌原发灶和转移灶中KiSS-1基因mRNA的表达,应用Westemblot检测KiSS-1蛋白的表达,并进一步应用免疫组化进行验证.结果实时荧光定量PCR显示脑转移标本KiSS-1 mRNA表达仅为原发灶的1/10,与原发灶比较有显著差异(P＜0.01),Westemblot检测显示脑转移灶KiSS-1蛋白较原发灶明显减弱,免疫组化显示KiSS-1在原发灶中表达率明显低于原发灶.结论KiSS-1基因在乳腺癌脑转移中具有转移抑制作用,可能在乳腺癌脑转移治疗中发挥作用.
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