发现一种针对蛋白解的嵌合体 (PROTAC) 作为FOXP3的有力调节剂
Bowen Yang1, Yanhong Cen2, Fangfang Li3
1Tianjin University of Science and Technology, Tianjin 300457, China; Guangdong Key Laboratory of Nanomedicine, CAS-HK Joint Lab of Biomaterials, CAS Key Laboratory of Biomedical Imaging Science and System, Institute of Biomedicine and Biotechnology, Shenzhen Institute of Advanced Technology (SIAT), Chinese Academy of Sciences (CAS), Shenzhen 518055, China.
Bioorganic & medicinal chemistry letters
|September 2, 2024
概括
这项研究引入了P60-L3-VHL,一种新的PROTAC分子,可降解叉头盒P3 (Foxp3) 蛋白. 这种降解抑制了调控性T细胞分化,为增强癌症免疫治疗提供了潜在的潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 调节性T (Treg) 细胞对于免疫恒温至关重要.
- 叉头盒P3 (Foxp3) 是Treg细胞发育和功能的关键转录因子.
- 准Foxp3降解是一种针对抗瘤免疫的治疗策略.
研究的目的:
- 为治疗应用设计和评估针对Foxp3的PROTAC分子.
- 研究新型PROTACs对Foxp3抑制的机制.
- 评估Foxp3降解对Treg细胞分化和癌症免疫治疗潜力的影响.
主要方法:
- 基于Foxp3抑制蛋白质 (P60) 的三个蛋白质溶解向金马 (PROTACs) 的设计:P60-L1-VHL,P60-L2-VHL和P60-L3-VHL.
- 用PROTACs治疗的HEK 293T和HeLa细胞中的Foxp3表达和核定位的评估.
- 使用蛋白酶体抑制剂来确认Foxp3.3的降解途径.
- 评估了P60-L3-VHL对体外激活的Treg细胞分化和Foxp3表达的影响.
主要成果:
- 在测试的细胞系中,P60-L3-VHL有效抑制了Foxp3表达和核定位.
- 证实P60-L3-VHL通过蛋白酶体路径诱导Foxp3降解.
- P60-L3-VHL治疗减少了体外激活的Treg细胞的分化,并降低了Foxp3水平.
结论:
- P60-L3-VHL在降解Foxp3和抑制Treg细胞分化方面表现出有效性.
- 这些发现表明P60-L3-VHL是通过调节Treg细胞功能的癌症免疫疗法的潜在治疗剂.
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