原生和体外组织的NMR光谱学表明,聚ADP核糖在生物矿物化中的作用
W Ying Chow1, Rakesh Rajan2, Karin H Muller3
1Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
Science (New York, N.Y.)
|May 17, 2014
概括
核磁共振 (NMR) 光谱法比较了体外和动物组织的分子结构. 一种新型的重型小鼠模型使得详细的分析成为可能,揭示了骨基质化中的多 (ADP-ribose).
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 生物物理学的生物物理.
背景情况:
- 核磁共振 (NMR) 光谱是确定分子结构的强大工具.
- 建立相对于本地组织的体外生长组织的忠实性对于准确的分子分析至关重要.
- 多维NMR可以提供复杂的生物样本的详细分子指纹.
研究的目的:
- 开发和验证一种方法来比较体外模型组织的分子结构与使用NMR光谱学的本地动物组织.
- 为了完善一个体外模型的发育骨组织.
- 为了识别参与骨基质化的新型分子.
主要方法:
- 利用多维NMR光谱来生成动物和体外组织的分子指纹.
- 开发了一种以碳-13和-15同位素为增强NMR灵敏度的"重型老鼠"模型.
- 应用了NMR分析,将发育中的骨的分子结构与实验室模型中的本地骨组织进行比较.
主要成果:
- 确立的NMR光谱作为可靠的"指纹"用于以原子分辨率比较完整组织的分子结构.
- 通过使用比较性NMR分析,成功完善了体外骨发育模型.
- 鉴定出聚氨酸二酸核糖 (PAR) 作为一个可能参与骨基质化的分子.
结论:
- 多维NMR光谱,特别是与同位素丰富,是有效的评估分子忠实度的体外组织模型.
- 开发的"重型小鼠"模型和NMR方法为详细的组织分析提供了一个强大的平台.
- 在骨基质化中发现PAR为研究骨发育和疾病开辟了新的途径.
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