使用近距离标记策略识别B7-H3交互伙伴
Shujie Liao1,2, Jiamin Huang1,2, Cecylia S Lupala1
1State Key Laboratory of Quantitative Synthetic Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
International journal of molecular sciences
|February 26, 2025
概括
B7同源3 (B7-H3) 与免疫和癌细胞相互作用. 这项研究确定了CD45和表皮生长因子受体 (EGFR) 作为潜在的B7-H3结合伙伴,推动了癌症治疗研究.
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:
- B7同源3 (B7-H3) 在各种癌症中高度表达,并影响免疫细胞活性,癌细胞信号传递和新陈代谢.
- 了解B7-H3的相互作用伙伴对于阐明它在癌症进展中的作用至关重要.
研究的目的:
- 确定B7-H3在免疫和癌细胞上的新型相互作用伙伴.
- 与潜在的合作伙伴一起研究B7-H3的结合机制.
主要方法:
- 使用基于酸盐过氧化酶2 (APEX2) 的近距离标记策略来识别B7-H3相互作用伙伴.
- 采用计算结构建模来分析绑定亲和关系和相互作用.
主要成果:
- B7-H3通过其IgV域与免疫细胞 (Raji,THP-1) 和前列腺癌细胞 (PC3) 结合.
- 确定了大约10个关键的潜在交互合作伙伴.
- CD45被认为是Raji细胞上的B7-H3受体;EGFR被确定为PC3细胞上的密切相互作用者.
- B7-H3与EGF的结合口袋结合,其亲和力比EGF的亲和力更高.
结论:
- 开发了一种有效的方法来识别B7-H3互动合作伙伴.
- 揭示了CD45和EGFR作为潜在的B7-H3结合伙伴,为B7-H3在癌症中的功能提供了新的见解.
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