针对前列腺癌使用双特异性T细胞参与者对抗前列腺特异性膜抗原
Gargi Das1,2, Jakub Ptacek1, Barbora Havlinova1
1Laboratory of Structural Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Prumyslova 595, 252 50 Vestec, Czech Republic.
ACS pharmacology & translational science
|November 17, 2023
概括
这项研究设计了一种双特异性T细胞吸引器 (BiTE),以准表达前列腺特异性膜抗原 (PSMA) 的前列腺癌 (PCa) 细胞. 新型5D3-αCD3 BiTE通过激活T淋巴细胞有效地消除PCa细胞,显示PCa免疫疗法的前景.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 生物技术是生物技术.
背景情况:
- 前列腺癌 (PCa) 是全球男性癌症相关死亡的主要原因.
- 前列腺特异性膜抗原 (PSMA) 是高级PCa的关键生物标志物,使其成为成像和治疗的目标.
- 免疫疗法通过利用宿主的免疫系统为PCa治疗提供了一个有希望的途径.
研究的目的:
- 设计,表达,净化和表征一种新的双特异性T细胞诱导剂 (BiTE),用于向PSMA阳性前列腺癌细胞.
- 评估5D3-αCD3 BiTE在通过T细胞参与消除前列腺癌细胞方面的疗效和特异性.
主要方法:
- 5D3-αCD3 BiTE的设计和制造,融合了特定于PSMA (5D3) 和抗CD3抗体碎片.
- 在昆虫细胞中表达,使用大小排除色谱进行净化,并通过差异扫描光学和流动细胞学进行表征.
- 使用前列腺癌细胞系和人体外围血液单核细胞进行BiTE疗效和特异性的体外评估.
主要成果:
- 纯化的5D3-αCD3 BiTE表现出单分散形式,热稳定性和对其向抗原的纳米分子亲和力.
- 被5D3-αCD3 BiTE激活的T细胞有效地消除了前列腺癌细胞.
- 在低BiTE度 (8 pM) 观察到高度特异性的瘤细胞消除.
结论:
- 5D3-αCD3 BiTE是一种强大且特定的分子,用于向PSMA阳性前列腺癌细胞.
- 这种工程BiTE显示出开发前列腺癌治疗新型免疫治疗策略的巨大潜力.
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