在结肠癌和转移中CD44R1粘附分子的表达
K K Tanabe1, L M Ellis, H Saya
1Department of General Surgery, University of Texas, M.D. Anderson Cancer Center, Houston.
Lancet (London, England)
|March 20, 1993
概括
在结肠瘤和转移中观察到改变的CD44变异表达,特别是增加的CD44R1. 这一发现可能会增强癌细胞转移,并有助于早期检测结肠癌.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- CD44是一种细胞表面粘附分子,参与淋巴细胞循环和组织进入.
- 在瘤细胞中表皮变异CD44R1的过度表达在动物模型中增强了转移.
- 在人类瘤中改变了CD44表达的研究,以了解其在癌症进展中的作用.
研究的目的:
- 在人类结肠和直肠瘤中研究CD44变异表达的变化.
- 为了确定特定的CD44变异是否与转移潜力相关.
- 评估CD44变异分析对检测结肠癌的有用性.
主要方法:
- 反转录酶聚合酶链反应 (RT-PCR) 分析CD44基因表达的分析.
- 分析了49个样本,包括正常的结肠粘膜,初级结肠/直肠瘤,正常的肝脏和转移.
- CD44H (造血变体) 和CD44R1 (表皮变体) 表达水平的比较.
主要成果:
- 造血变异CD44H是所有标本中占主导地位的异型.
- 与CD44H相比,CD44R1表达的显著增加在初级结肠瘤 (12/14) 和转移 (16/16) 中被观察到.
- 在13个正常的粘膜样本中,仅在2个样本中发现了增加的CD44R1表达.
结论:
- 在人类结肠癌细胞中增加CD44R1变异的表达可能会导致其转移潜力.
- 与CD44H相比,CD44R1的相对增加可能成为检测活检样本中的结肠癌的敏感生物标志物.
- 了解CD44变异表达提供了对结肠癌转移和诊断策略的见解.
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