驱动T细胞发育和增强免疫力的可溶性Notch激活剂的设计
Rubul Mout1, Ran Jing1, Mayuri Tanaka-Yano2
1Stem Cell & Regenerative Biology Program, Boston Children's Hospital, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Harvard University, Cambridge, MA 02138, USA.
Cell
|August 2, 2025
概括
研究人员开发出新型可溶性蛋白质复合体, 激活细胞命运的关键调节器, 这些工程激动剂有效地促进T细胞分化和增强免疫反应,为免疫治疗和治疗开发提供了新的途径.
科学领域:
- 生物技术
- 免疫学
- 细胞生物学
背景情况:
- 诺奇受体在发育过程中对细胞命运的调节至关重要,并且需要机械力来激活,通常由细胞结合体介导.
- 由于需要机械力调解,开发可溶性激动剂对Notch受体信号传递具有重大挑战.
研究的目的:
- 通过计算蛋白质设计,为Notch受体设计出新型,可溶性,细胞因子类的激应剂.
- 为了证明这些设计的激动剂在激活Notch信号和驱动T细胞分化和免疫反应方面的有效性.
主要方法:
- 利用精确的价值和几何形状的计算设计的蛋白质复合体来创建可溶性诺奇激活剂.
- 研究了这些激动剂诱导细胞-细胞桥接,Notch受体聚合以及随后的信号传递的能力.
- 在小鼠模型中评估各种原始细胞的T细胞分化和体内免疫反应.
主要成果:
- 设计的蛋白质复合物成功地作为可溶性诺奇激动剂,在细胞突触上聚集受体并激活信号通路.
- 在标准和生物反应器条件下使用这些激动剂,证明了有效的T细胞与带血前代细胞和诱导多能干细胞 (iPSC) 的分化.
- 在小鼠中观察到增强的免疫反应,包括刺激细胞因子的产生,抗原特异性CD4+T细胞的扩张和静脉注射后的抗体类别切换.
结论:
- 新设计的蛋白质复合物可以有效地作为可溶性细胞因子类的诺奇受体激活剂.
- 这些工程配体为优化体外细胞分化协议提供了多功能平台.
- 开发的激动剂具有促进新型免疫疗法的巨大潜力.
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