揭示了一个潜伏的生物活性介质素-6甘氨酸形式
Yanbo Liu1, Yuta Maki1,2, Ryo Okamoto1,2
1Department of Chemistry, Graduate School of Science, Osaka University, 1-1, Machikaneyama, Toyonaka, 560-0043, Japan.
Angewandte Chemie (International ed. in English)
|August 5, 2024
概括
研究人员开发了一种新型的半合成甘化人间白素-6 (143glycosyl-IL-6),克服了隔离挑战. 这种生物灵感的方法产生了一种强大的,折叠的细胞因子,具有显著的细胞增殖活性.
科学领域:
- 生物化学 生物化学
- 蛋白质工程是指蛋白质工程.
- 葡萄糖生物学 葡萄糖生物学
背景情况:
- 人类介质素-6 (IL-6) 是一种至关重要的细胞因子,但其在糖基化形式中的隔离具有挑战性.
- 由于产量低,在Asn143中实现和研究基因编码的糖化很难.
研究的目的:
- 开发一种生物启发的半合成方法,用于在Asn143 (143glycosyl-IL-6) 处与N-glycan一起生产人间白蛋白-6).
- 为了研究这种特定的糖系化细胞因子的生物活性构成和功能.
主要方法:
- 半合成涉及区域选择性脊柱激活和蛋白质折叠化学.
- 通过囊标签,化学折叠和原生化学结合来表达IL6-多.
- 插入N-glycan标签进行稳定,然后进行脱硫和体外折叠.
主要成果:
- 一个完整的143glycosyl-IL-6多 (183个氨基酸) 的成功半合成.
- N-glycan标签增强了中间聚-thioesters 的稳定性.
- 最后折叠的143glycosyl-IL-6表现出强大的细胞增殖活性.
结论:
- 开发的半合成策略使得高效地生产糖基化IL-6成为可能.
- 这项研究通过综合模拟和生物试验,提供了关于潜伏143glycosyl-IL-6的生物活性构成的见解.
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