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miRNA-21的循环放大检测及成像

作者:时间:2023-10-08点击数:


下载全文: 202305002.pdf


文章编号: 1672-6987202305-0016-10 DOI10.16351/j.1672-6987.2023.05.002


孙鑫鑫, 李家家, 丁彩凤*(青岛科技大学 化学与分子工程学院, 山东 青岛 266042


摘要: 报道了一种miRNA循环放大检测系统,该系统涉及红色发射碳量子点(CDs)以及聚多巴胺纳米球(PDANSs)。通过纳米材料与DNA的自组装,在激发光源410542 nm 的照射下,产生650585 nm的荧光信号,通过荧光信号的关-开,可以实现对靶标miRNA-21循环放大的双荧光检测与细胞成像,极大提高检测的灵敏度与准确性。


关键词: 碳量子点; 聚多巴胺纳米球; miRNA-21; 循环放大检测; 细胞成像


中图分类号: O 657.38文献标志码: A

引用格式: 孙鑫鑫, 李家家, 丁彩凤. miRNA-21的循环放大检测及成像[J. 青岛科技大学学报(自然科学版), 2023, 44(5): 16-25.


SUN Xinxin LI Jiajia DING Caifeng. Circulating amplification detection and imaging of miRNA-21J. Journal of Qingdao University of Science and TechnologyNatural Science Edition), 2023 445): 16-25.


Circulating Amplification Detection and Imaging of miRNA-21


SUN Xinxin LI Jiajia DING Caifeng

(College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042,China)


Abstract: This paper reports such a miRNA cycle amplification detection system, which involves red emitting carbon quantum dots (CDs) and polydopamine nanospheres (PDANSs). Through the self-assembly of nanomaterials and DNA, 650 nm and 585 nm fluorescence signals are generated under the irradiation of 410 nm and 540 nm excitation light sources. Through the off-on of fluorescence signals, the double fluorescence detection and cell imaging of cyclic amplification of target miRNA-21 can be realized, which greatly improves the sensitivity and accuracy of detection.


Key words: carbon quantum dots; polydopamine nanospheres; miRNA-21; cyclic amplification detection; cell imaging


收稿日期: 2022-09-08

基金项目: 国家自然科学基金项目(22074074);山东省自然科学基金项目(ZR2020MB065).

作者简介: 孙鑫鑫(1996—),女,硕士研究生. *通信联系人.




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