G-四重复结合的子[a]氨酸降低了人类胃癌细胞中的c-KIT表达的调节
Keith I E McLuckie1, Zoë A E Waller, Deborah A Sanders
1Department of Chemistry, University of Cambridge, Cambridge, UK.
Journal of the American Chemical Society
|February 8, 2011
概括
研究人员发现了新的G-四重复合体配体,可以降低c-KIT基因转录. 这些化合物,[a]氧衍生物,通过准G-四重复结构,显示出作为抗瘤剂的潜力.
科学领域:
- 分子生物学分子生物学
- 药用化学 医学化学
- 遗传学 是一个遗传学.
背景情况:
- G-四重复 (G4) 结构是核酸二次结构,由于它们在细胞功能和治疗潜力中的作用,它们具有显著的兴趣.
- 在基因促销器区域中经常发现G4动机,这表明G4形成和基因转录调节之间存在联系.
研究的目的:
- 识别能够调节基因转录的新型G-四重复合联体.
- 研究这些配体作为治疗剂的潜力,特别针对c-KIT瘤基因.
主要方法:
- 利用功能性基于细胞的测试来选G-四重复合联体.
- 采用了一种由含有G-四倍体的c-KIT促销器驱动的光酶记者系统.
- 在人类胃癌细胞系中验证了已识别的配体对内源c-KIT表达的作用.
- 使用表面等离子体共振 (SPR) 进行生物物理分析,以评估连接体结合亲和力和选择性.
主要成果:
- 确定了两种新的G-四重复合体配体,可显著降低c-KIT促进体的转录.
- 证明这些配体降低了胃癌细胞内源性c-KIT表达.
- 与双链DNA相比,在c-KIT促进体内确认了连接体的高亲和度和优先结合特定的G-四重复结构.
结论:
- 基于细胞的记者分析对于发现调节转录的G-四重复结合分子是有效的.
- [a]氨酸衍生物是针对G-四重复结构的一类有前途的化合物.
- 这些发现确定了具有抗瘤剂潜力的新型G-四重复合体配体,特别是在涉及c-KIT的癌症中.
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