2',4'-LNA-功能化5'-S-酸乙CDN作为刺痛激动剂
Simpa K Yeboah1,2, Abdulai Zigli1,2, Herman O Sintim1,2,3
1Department of Chemistry, 560 Oval Drive, West Lafayette, Indiana, 47907-2084.
新的锁定核酸功能化的循环二核酸 (LNA endo-S-CDNs) 显示出作为免疫治疗药物的潜力. 这些化合物激活cGAS-STING通路,并对癌症疫苗表现出增强的化学和酶稳定性.
科学领域:
- 免疫学 免疫学 免疫学
- 药用化学 医学化学
- 生物化学 生物化学
背景情况:
- 循环二核酸 (CDN) 激活cGAS-STING通路,这对先天性和适应性免疫非常重要.
- CDN类似物被探索为癌症疫苗和免疫调节剂,但由于化学和酶的不稳定性而面临限制.
- 之前的工作引入了对二酶的稳定性提高的二酸盐类型.
研究的目的:
- 为了合成和评估锁定核酸功能化 (LNA) 内分-S-CDN作为STING激动剂.
- 评估这些新型CDN类型的稳定性和免疫激活潜力.
- 研究它们在激活STING中的有效性,特别是在反应减弱的细胞系中.
主要方法:
- 合成LNA功能化的内分S-CDN.
- 在THP1单细胞中对人类STING (hSTING) 途径的激活试验.
- 对抗氧化剂 (I2,H2O2) 的化学稳定性和对抗化酶的酶稳定性的评估.
主要成果:
- 一些合成的LNA 3'3'-endo-S-CDN中度激活hSTING (REF单元型R232H).
- 这种激活在细胞系中被观察到,这种细胞系对2'3'-cGAMP和ADU-S100等标准STING激动剂的反应能力降低.
- 一个强大的endo-S-CDN模拟体显示出显著的化学和固酶稳定性.
结论:
- LNA endo-S-CDNs代表了一类具有增强稳定性的有希望的STING激动剂.
- 这些新型化合物可能会克服现有CDN的局限性,为改善免疫疗法提供潜力.
- 对LNA内分S-CDN的进一步研究可以促进癌症疫苗和免疫治疗的开发.
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