对向前列腺癌衍生的小细胞外囊泡的aptamer的识别和诊断评估
Ting Ding1,2,3, Yue Li1, Li Xue4
1Department of Clinical Laboratory, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710000, China.
Molecular therapy. Nucleic acids
|February 6, 2026
概括
研究人员开发了一种针对前列腺癌 (PCa) 小细胞外囊泡 (sEVs) 的新型阿普塔默探针,用于非侵入性诊断. 这种探测器显示出高特异性和在尿样中早期检测PCa的潜力.
科学领域:
- 生物技术是生物技术.
- 分子诊断学 分子诊断学
- 在瘤学瘤学.
背景情况:
- 前列腺癌 (PCa) 诊断缺乏特定的非侵入性标志物.
- 细胞外囊泡 (EVs),特别是小EVs (sEVs),是有前途的生物标志物.
- 亚胺为生物传感器开发提供了高特异性.
研究的目的:
- 开发和验证一个针对sEVs的PCa特定的aptamer探针.
- 评估该探针在临床样本中的诊断潜力.
主要方法:
- EV-SELEX被用于识别PCa特定的受体.
- 表面等离子体共振 (SPR) 和纳米流细胞计验证了阿帕特马的亲和力和特异性.
- 临床尿样分析了sEVs的比例.
主要成果:
- 阿普塔默seq25对PCa衍生的sEVs具有很高的特异性.
- SPR显示强大的结合亲和力 (KD = 24.02 nM) 和剂量依赖的反应.
- 纳米流细胞测量区分了PCa sEVs与正常细胞系.
- 来自PCa患者的尿液样本的seq25阳性sEV明显高于良性前列腺增生症患者.
结论:
- 一个PCa特定的sEVs体探针 (seq25) 已成功开发.
- 这种探针为前列腺癌诊断提供了一个有前途的非侵入性方法.
- 电动汽车和aptamers的整合增强了诊断能力.
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