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GPCR激素的O-GlcNAc工程改善了它们的稳定性和活体活性
Paul M Levine, Aaron T Balana, Emmanuel Sturchler1
1Department of Molecular Medicine The Scripps Research Institute , Jupiter , Florida 33458 , United States.
Journal of the American Chemical Society
|August 17, 2019
概括
O- GlcNAcylation增强了GLP- 1和PTH等治疗性的稳定性和体内活性. 这种新的方法克服了的不稳定性,为开发改进的疗法提供了有希望的策略.
科学领域:
- 生物化学
- 分子生物学
- 药理学
背景情况:
- 疗法面临着体内不稳定性和短半衰期的挑战.
- 蛋白质糖化增强血清稳定性,但细胞外方法是复杂的.
- O-GlcNAcylation是一种细胞内糖化,可以远程抑制蛋白质分解.
研究的目的:
- 研究O-GlcNAcylation用于增强治疗性的稳定性.
- 使用O-GlcNAcylation制造类似葡萄糖类-1 (GLP-1) 和副甲状腺激素 (PTH) 的类似物.
- 评估O-GlcNAcylation对的强度,稳定性和体内活性的影响.
主要方法:
- 对GLP-1和PTH的O- 化.
- 基于细胞的测试以评估效和受体激活.
- 血清稳定性测试以测量蛋白质溶解阻力.
- 在体内测试以评估药理动力学和药理动力学特性.
- 基于结构的分子建模和受体突变.
主要成果:
- O-GlcNAcylated GLP- 1 和 PTH 类型与原生具有同等效力.
- 几种GLP-1类型的药物表现出偏向的抗药性.
- O- GlcNAcylation显著改善了这两种的血清稳定性,即使在远程修改部位.
- 在体内,O- GlcNAcylated的活性得到增强.
- 分子建模提供了对受体相互作用和O-GlcNAcylation适应的见解.
结论:
- O-GlcNAcylation是一种可行的策略,可以增强治疗的蛋白质溶解稳定性.
- 这种方法可以改善GLP-1和PTH等的体内性能.
- O-GlcNAcylation提供了一种强大的方法来设计具有改进性质的疗法.
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