所有类型的中间线丝都有一个共同的抗原决定因素,由单克隆抗体定义
Cell
|December 1, 1981
概括
一个新的单克隆抗体识别了所有中间丝类,包括质,神经丝和肌肉Z线. 这表明,在各种中间丝蛋白中,有一个共享的抗原决定因素.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 蛋白质化学 蛋白质化学
背景情况:
- 介质纤维是一种多样化的细胞骨蛋白质,在各种细胞类型中发现.
- 之前的研究已经在不同的组织和生物体中确定了不同的中间丝蛋白.
- 缺少所有中间导线类的通用抗体.
研究的目的:
- 开发一种单克隆抗体,能够识别广泛的中间丝蛋白.
- 为了研究不同中间丝蛋白之间的共同抗原决定因素的存在.
- 探索所有中间丝体中一个共同的分子成分的潜在存在.
主要方法:
- 一种新型单克隆抗体的生产和表征.
- 免疫光测定各种细胞类型 (星细胞,神经元,上皮细胞,纤维细胞) 和骨肌肉.
- 使用SDS-聚烯胺凝电泳 (SDS-PAGE) 来分析蛋白质结合.
- 测试抗体对脊椎动物和无脊椎动物已知的中间丝蛋白的反应性.
主要成果:
- 单克隆抗体与所有测试的中间丝类进行反应,包括质丝,神经丝,肌丝和纤维细胞中间丝.
- 观察到抗体结合在骨肌肉中的Z线.
- 抗体识别了主要的中间丝蛋白,如质纤维酸性蛋白质,神经丝三重组,维丁,德斯敏和细胞激素.
- 它还结合了来自鱼和Myxicola的无脊椎动物中间丝蛋白.
- 一种大约6.6万个分子重量的蛋白质被确定为潜在的共同成分.
结论:
- 所有脊椎动物和无脊椎动物的中间丝蛋白都可能共享一个共同的抗原决定因素.
- 这些发现强烈表明所有中间丝蛋白中存在着保存的结构特征或表位.
- 一种66000个分子重量的蛋白质可能是跨物种中间丝的无处不在的组成部分.
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