核酸驱动的纳米粒子生物传感器用于 Candida albicans 在阴道抹布中检测
Linglin Qiu1, Cristina de la Encarnacion2,3, Yuji Li2,3
1Department of Obstetrics and Gynecology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China.
ACS omega
|February 2, 2026
概括
一种使用金纳米颗粒的新型色度生物传感器快速检测出Candida albicans,这是 vulvovaginal candidiasis (VVC) 的原因. 这种高效的方法为诊断VVC感染提供了更快,更准确的替代方案.
科学领域:
- 纳米技术 纳米技术
- 生物医学工程 生物医学工程
- 传染病诊断 传染病诊断 传染病诊断
背景情况:
- Vulvovaginal Candidiasis (VVC) 是一种由Candida albicans (C. albicans) 引起的常见妇科感染,传统上依赖于耗时和主观的诊断方法.
- 目前的诊断技术,如微生物培养和VVC的免疫光显微镜,在速度和客观性方面存在重大限制.
- 对VVC的快速,灵敏和特定的诊断工具的需求对于及时和有效的患者管理至关重要.
研究的目的:
- 开发和验证一种新的色度生物传感器,用于快速准确地检测Candida albicans (C. albicans).
- 用特定的寡核酸探针使金纳米粒子 (AuNPs) 功能化,针对C. albicans识别的HWP1基因.
- 评估开发的基于AuNP的传感器的临床性能,用于诊断 vulvovaginal candidiasis (VVC).
主要方法:
- 使用60nm酸盐稳定黄金纳米粒子 (AuNPs) 制造色度生物传感器,并使用醇修饰的寡核酸探针进行功能化.
- 设计的寡核酸探针,以准C. albicans的壁蛋白1 (HWP1) 基因,以进行特定的杂交.
- 在杂交时通过纳米粒子聚合诱导的颜色变化 (从红色到透明) 检测C. albicans,使用紫外线可见光谱法量化.
主要成果:
- 优化的基于AuNP的传感器实现了对C. albicansRNA的0.078nM的检测极限.
- 用234个阴道拭子样本进行的临床验证表明,敏感度为85.0%,特异性为85.4%,整体准确度为85.3%.
- 整个检测过程,从样品到结果,在40分钟内完成,不需要酶放大.
结论:
- 开发的基于金纳米粒子的色度生物传感器为检测Candida albicans提供了一种快速,经济高效和高度敏感的方法.
- 这种新型传感器比传统的诊断方法具有显著的优势,能够有效地早期诊断出 vulvovaginal candidiasis (VVC).
- AuNP传感器代表了改善VVC诊断的有希望的工具,可能导致更快的治疗和更好的患者结果.
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