在原发性乳腺癌中,CD44变异的外显突变和存活时间长度
M Kaufmann1, K H Heider, H P Sinn
1Department of Obstetrics and Gynaecology, University of Heidelberg, Germany.
Lancet (London, England)
|March 11, 1995
概括
乳腺癌中CD44变异体外v6表达表明预后不佳. 这种CD44表位是侵袭性乳腺瘤患者生存的重要独立预测因子.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- CD44是一种通过替代拼接产生的细胞表面蛋白家族.
- 含有exon v6序列的拼接变体与动物癌症模型中的转移有关.
研究的目的:
- 为了评估在人类乳腺癌中CD44变体的外显突表达.
- 在乳腺癌患者中确定这些表位的预后潜力.
主要方法:
- 使用 affinity-purified 聚克隆血清和单克隆抗体对抗人类 CD44 变体的前体序列.
- 在100种原发性侵袭性乳腺瘤,复发,转移和正常组织中研究了CD44表达.
主要成果:
- 在大多数瘤中表达了CD44变体外型 (v3,v5,v6),但没有表达在正常的乳腺管道上皮细胞或超塑性病变中.
- 在84%的原发性瘤和100%的转移中发现了DIII表位 (exon v6).
- 异构v6阳性瘤与明显较差的整体存活率相关 (p=0.005).
结论:
- CD44变异的外显子表达,特别是外显子v6表位,是乳腺癌中宝贵的预后标志物.
- CD44外因子v6表位是预后的独立预测因子,不受瘤大小,等级,淋巴结状况或孕激素受体水平的影响.
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