通过使用光式氨酸和紫外线光来调节IL-24/IL-20R2复合形成
Phuong Ngoc Pham1,2, Jiří Zahradník3,4, Lucie Kolářová1
1Laboratory of Biomolecular Recognition, Institute of Biotechnology of the Czech Academy of Sciences, Vestec, Czechia.
Frontiers in molecular biosciences
|July 24, 2023
概括
研究人员开发了一种方法来控制人体中白蛋白24 (IL-24) 用光与其受体的结合. 这种技术允许精确调节IL-24相互作用,可能有助于自身免疫性疾病和癌症治疗.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 人类介质素24 (IL-24) 是自身免疫性疾病和癌症中的关键细胞因子.
- IL-24的功能依赖于它与膜受体的相互作用.
- 调节IL-24受体亲和力提供了治疗和研究潜力.
研究的目的:
- 开发一种用于光控制IL-24及其受体IL-20R2.2.之间的结合亲和力的方法.
- 为了证明使用遗传密码扩展用于光感应蛋白相互作用的可行性.
主要方法:
- 利用复合溶性蛋白质变体和遗传密码扩展技术.
- 在IL-24和IL-20R中引入了非正规的正极-尼托-氨酸 (NBY) 残留物2.
- 采用生物物理和细胞信号测试来选NBY残留位置.
主要成果:
- 确定IL-20R2的tyrosine70作为NBY安装的关键地点.
- 在IL-20R2的tyrosine70下NBY在黑暗中损害了异构复合体组合.
- 365nm光辐射恢复了IL-24和IL-20R2结合的过程.
结论:
- 成功开发了一种光IL-20R2变体,用于光控制的IL-24结合.
- 这种方法使IL-24信号通路的时空调节成为可能,例如JAK/STAT酸化.
- 在基础研究和治疗策略中对IL-24相关疾病的潜在应用.
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