稳定纤维细胞生长因子21的计算机辅助工程
Gabin de La Bourdonnaye1,2, Tereza Ghazalova2, Petr Fojtik3
1Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic.
Computational and structural biotechnology journal
|February 21, 2024
概括
纤维细胞生长因子21 (FGF21) 变体被设计为增强稳定性和在代谢疾病中的治疗潜力. 计算机辅助设计提高了温度稳定性,而不会影响基于细胞的测定中的有效性.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 代谢工程是代谢工程.
背景情况:
- 纤维细胞生长因子21 (FGF21) 是一种关键的代谢调节剂,对代谢疾病具有治疗潜力.
- FGF21的治疗效用受到其不良的稳定性 (热,酸,蛋白解) 和快速清除的限制.
- 蛋白质工程策略,特别是增强热稳定性,已经显示出改善FGF21药理动学的前景.
研究的目的:
- 使用计算机辅助设计来设计和表征FGF21变体,以提高温度稳定性.
- 在细胞测试中评估工程FGF21变体的疗效.
- 评估合理设计在提高FGF21的药物可行性方面的潜力.
主要方法:
- 使用计算机辅助设计 (CAD) 来设计FGF21的变种.
- 实验性表征包括测量化温度 (Tm) 以评估热稳定性.
- 基于细胞的测试 (Hep G2,NIH 3T3纤维细胞) 用于评估MAPK/ERK信号激活和细胞增殖.
主要成果:
- 工程FGF21变种表现出增强的融温度,高达15°C高于野生型 (WT).
- FGF21变种在激活Hep G2细胞中的MAPK/ERK信号传递方面保持了无损的有效性.
- 工程变体对Hep G2和NIH 3T3纤维细胞增殖的刺激与FGF21-WT相当.
结论:
- 合理的计算机辅助设计可以显著提高FGF21.1的热稳定性.
- 稳定FGF21变种保留了生物疗效,表明治疗潜力得到了改善.
- 将理性设计与其他稳定方法相结合,可以最大限度地提高FGF21的制药应用.
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