天津大学 医学部 生命科学学院,天津 300072
宫晓群,博士,教授,研究方向:生物标志物分子的检测与成像,E-mail:gongxiaoqun@tju.edu.cn
收稿:2025-01-13,
修回:2025-02-17,
录用:2025-03-17,
纸质出版:2025-11-15
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王佳讯,徐一,赵爽,宫晓群.等温链置换扩增反应/CRISPR-Cas12a系统结合反向荧光增强试纸条检测唾液中microRNA-31的研究[J].分析测试学报,2025,44(11):2346-2353.
WANG Jia-xun,XU Yi,ZHAO Shuang,GONG Xiao-qun.Isothermal Strand Displacement Amplification Reaction/CRISPR-Cas12a System for Detection of MicroRNA-31 in Saliva Samples by Combining with Reverse Fluorescence Enhancement Lateral Flow Test Strip[J].Journal of Instrumental Analysis,2025,44(11):2346-2353.
王佳讯,徐一,赵爽,宫晓群.等温链置换扩增反应/CRISPR-Cas12a系统结合反向荧光增强试纸条检测唾液中microRNA-31的研究[J].分析测试学报,2025,44(11):2346-2353. DOI: 10.12452/j.fxcsxb.25011324.
WANG Jia-xun,XU Yi,ZHAO Shuang,GONG Xiao-qun.Isothermal Strand Displacement Amplification Reaction/CRISPR-Cas12a System for Detection of MicroRNA-31 in Saliva Samples by Combining with Reverse Fluorescence Enhancement Lateral Flow Test Strip[J].Journal of Instrumental Analysis,2025,44(11):2346-2353. DOI: 10.12452/j.fxcsxb.25011324.
构建了基于核酸等温链置换扩增反应(ISDA)及CRISPR-Cas12a系统协同放大检测microRNA-31(miRNA-31)的方法,以反向荧光增强试纸条(rLFTS)为信号展示平台,实现可视化检测。通过优化ISDA反应的引物序列设计及反应缓冲液,实现了miRNA-31特异性识别和第一次信号放大,输出双链DNA产物并激活CRISPR-Cas12a切割游离单链DNA(ssDNA)报告分子的反式切割活性,同时阻碍金纳米探针通过结合ssDNA与检测线上的Cy5荧光探针形成夹心结构,进而恢复Cy5荧光,以此作为定量信号,实现了对miRNA-31的高灵敏和高特异性检测。该方法对唾液样本中miRNA-31的检出限低至57.9 amol/L,加标回收率为91.6%~111%,检测结果与定量逆转录聚合酶链式反应(qRT-PCR)定量结果具有良好的一致性,且检测时间仅需90 min。实验结果表明该方法具有操作简单、灵敏度高、检测时间短等优点,能够满足对唾液样本中miRNA-31的超灵敏检测需求。
A microRNA-31(miRNA-31) amplifying detection signals method based on nucleic acid isothermal strand displacement amplification(ISDA) and CRISPR-Cas12a system were established and achieved visualizing detection by combining with reverse fluorescence enhancement lateral flow strip(rLFTS) platform. Under optimizing the primer toehold design and reaction buffer of ISDA reaction,miRNA-31 signal was efficiently amplified to output copious double stranded DNA,which activated CRISPR-Cas12a trans-cleavage activity to digest single-stranded reporter molecules and led to gold nanoparticles couldn′t be captured on the test lines by sandwich method to quench Cy5 fluorescence,causing corresponding quantitative fluorescence signals for improving miRNA-31 detection sensitivity. The results showed that the detection limit of 57.9 amol/L and recoveries of 91.6%-111% for detection miRNA-31 in saliva samples by the method. Moreover,the quantitative results had good consistency with qRT-PCR method in a much faster detection time(90 min). Given its simplicity,sensitivity and rapid,ISDA-Cas12a-rLFTS could meet the demand for ultra-sensitive detection of miRNA-31 in saliva samples.
Diener C , Keller A , Meese E . Trends Genet. , 2022 , 38 : 613 - 626 .
Kim H , Lee Y Y , Kim V N . Nat. Rev. Mol. Cell Biol. , 2025 , 26 : 276 - 296 .
Shang R F , Lee S , Senavirathne G , Lai E C . Nat. Rev. Genet. , 2023 , 24 : 816 - 833 .
Ho P T B , Clark I M , Le L T T . Int. J. Mol. Sci. , 2022 , 23 : 7167 .
Jet T , Gines G , Rondelez Y , Taly V . Chem. Soc. Rev. , 2021 , 50 : 4141 - 4161 .
Liu C J , Lin S C , Yang C C , Cheng H W , Chang K W . Head Neck , 2012 , 34 : 219 - 224 .
Tetzlaff M T , Liu A , Xu X , Master S R , Baldwin D A , Tobias J W , Livolsi V A , Baloch Z W . Endocr. Pathol. , 2007 , 18 : 163 - 173 .
Chen J Y , Fan T T , Chen Y , Ye L Z , Zhang C , Liu F , Qin Y , Tan Y , Jiang Y Y . Biosens. Bioelectron. , 2020 , 169 : 112631 .
Lu X H , Yao C Y , Sun L L , Li Z . Biosens. Bioelectron. , 2022 , 203 : 114041 .
Wang L L , Li H X , Yang Y Y , Su Y L , Lian J S , Li T , Xu J , Wang X N , Jin N , Liu X F . Int . J. Clin. Exp. Pathol. , 2018 , 11 : 4339 - 4345 .
Wu Y , Pei J W , Li Y , Wang G B , Li L , Liu J B , Tian G . Talanta , 2024 , 266 : 125066 .
Cui L X , Zhang N , Cheng Z , Li C , Du Y H , Zhou W B . J. Instrum. Anal. (崔莉煊,张宁,程智,李抄,杜耀华,周卫斌. 分析测试学报), 2024 , 43 ( 12 ): 2008 - 2020 .
Jiang Y , Li B L , Milligan J N , Bhadra S , Ellington A D . J. Am. Chem. Soc. , 2013 , 135 : 7430 - 7433 .
Liu W P , Zhu M J , Liu H X , Wei J T , Zhou X M , Xing D . Biosens. Bioelectron. , 2016 , 81 : 309 - 316 .
Zhao D , Tang J T , Tan Q , Xie X H , Zhao X , Xing D P . Talanta , 2023 , 260 : 124582 .
Luo T , Li J C , He Y , Liu H , Deng Z W , Long X , Wan Q Q , Ding J C , Gong Z , Yang Y J , Zhong S A . Anal. Chem. , 2022 , 94 : 6566 - 6573 .
Yang X Q , Gao J . J. Anal. Sci. Technol. , 2024 , 15 : 16 .
Liu S S , Wang C Y , Wang Z M , Xiang K K , Zhang Y T , Fan G C , Zhao L , Han H Y , Wang W J . Biosens. Bioelectron. , 2022 , 204 : 114078 .
Xia X Y , Chen Q T , Ren D D , Xu G H , Wei F D , Yang J , Hu Q , Cen Y . Sens. Actuators B , 2023 , 393 : 134327 .
Wang N , Zhang J , Xiao B , Sun X Y , Xie R B , Chen A L . Biosens. Bioelectron. , 2022 , 211 : 114345 .
Sengupta A , Koninti R K , Gavvala K , Ballav N , Hazra P . Phys. Chem. Chem. Phys. , 2014 , 16 : 3914 - 3917 .
Chen M H , Luo R , Li S H , Li H X , Qin Y , Zhou D M , Liu H , Gong X Q , Chang J . Anal. Chem. , 2020 , 92 : 13336 - 13342 .
Preechakasedkit P , Siangproh W , Khongchareonporn N , Ngamrojanavanich N , Chailapakul O . Biosens. Bioelectron. , 2018 , 102 : 27 - 32 .
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