1.沈阳化工大学 化学工程学院,辽宁 沈阳 110142
2.中国科学院大连化学物理研究所 中药科学研究中心,辽宁 大连 116023
赵新佳:博士,助理研究员,研究方向:纳米孔单分子检测,E-mail:zhaoxinjia@dicp.ac.cn
宋艳玲,博士,副教授,研究方向:天然产物结构改造及生物活性研究,化学药物合成工艺研究,E-mail:yanlingsong521@126.com
收稿:2026-01-09,
修回:2026-03-19,
录用:2026-04-11,
网络首发:2026-04-30,
纸质出版:2026-06-15
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雍伟,赵新佳,常永新,张佳蓉,宋艳玲,卿光焱.纳米孔单分子传感平台用于G四链体拓扑结构区分[J].分析测试学报,2026,45(06):1-7.
YONG Wei,ZHAO Xin-jia,CHANG Yong-xin,ZHANG Jia-rong,SONG Yan-ling,QING Guang-yan.Nanopore Single-Molecule Sensing Platform for Topological Discrimination of G-Quadruplexes[J].Journal of Instrumental Analysis,2026,45(06):1-7.
雍伟,赵新佳,常永新,张佳蓉,宋艳玲,卿光焱.纳米孔单分子传感平台用于G四链体拓扑结构区分[J].分析测试学报,2026,45(06):1-7. DOI: 10.12452/j.fxcsxb.26010904.
YONG Wei,ZHAO Xin-jia,CHANG Yong-xin,ZHANG Jia-rong,SONG Yan-ling,QING Guang-yan.Nanopore Single-Molecule Sensing Platform for Topological Discrimination of G-Quadruplexes[J].Journal of Instrumental Analysis,2026,45(06):1-7. DOI: 10.12452/j.fxcsxb.26010904.
G四链体(G4)的拓扑结构多样性与其生物学功能密切相关,建立高灵敏度检测方法对解析其结构-功能关系至关重要。该研究系统评估耻垢分枝杆菌孔蛋白A(MspA)、气溶素(AeL)与
α
-溶血素(HL)三种纳米孔对G4的检测性能,成功构建以HL为核心的单分子无标记纳米孔G4传感体系。该体系可高效区分单链DNA(ssAf17)与平行结构c-Myc、反平行结构TBA及混合型结构H24A等不同拓扑类型的G4。针对c-Myc27bp阻塞时间过长的问题,通过在序列两端各引入25个腺嘌呤(A)构建c-Myc77bp结构,该结构在过孔过程中呈现特征性“二级台阶信号”,显著提升信号辨识度与过孔效率。该研究为G4拓扑结构单分子解析提供新策略,拓展了纳米孔技术在核酸高级结构分析领域的应用,可为相关疾病靶向药物的研发提供技术支撑。
The topological diversity of G-quadruplexes
(G4s) is closely related to their biological functions,and establishing a highly sensitive detection method is crucial for elucidating their structure-function relationships. In this study,we systematically evaluated the detection performances of three nanopores—Mycobacterium smegmatis porin A(MspA),Aerolysin(AeL),and
α
-hemolysin(HL)—for G4s,and successfully constructed a label-free single-molecule nanopore sensing system for G4s with HL as the core. This system can efficiently discriminate single-stranded DNA(ssAf17) from G4s of different topological types,including parallel c-Myc,antiparallel TBA,and hybrid H24A.To overcome the excessively long dwell time associated with c-Myc27bp,a c-Myc77bp construct was designed by incorporating 25 adenines(A) at both ends of the sequence. During translocation,c-Myc77bp exhibits characteristic "two-step signals",which significantly improves signal discriminability and translocation efficiency. This work provides a novel strategy for the single-molecule analysis of G4 topological structures,expands the application of nanopore technology in the analysis of nucleic acid higher structures,and offers a technical basis for the development of targeted therapeutics against related diseases.
Farag M , Mouawad L . Nucleic Acids Res. , 2024 , 52 ( 7 ): 3522 – 3546 .
Khurana S , Kukreti S , Kaushik M . Int. J. Biol. Macromol. , 2023 , 253 : 126835 .
Ji N , Shi H Q , Fang X Y , Wu Z Y . Anal. Chim. Acta , 2020 , 1106 : 126 - 132 .
Dell' Oca M C , Quadri R , Bernini G M , Menin L C , Grasso L , Rondelli D , Yazici O , Sertic S , Marini F , Pellicioli A , Muzi-Falconi M , Lazzaro F . Int. J. Mol. Sci. , 2024 , 25 ( 6 ): 3162 .
Li H H , Jin Z L , Gao S X , Kuang S , Lei C Y , Nie Z . Chem. Sci. , 2025 , 16 ( 23 ): 1 0083– 10105 .
Reddy Sannapureddi R K , Mohanty M K , Gautam A K , Sathyamoorthy B . J. Phys. Chem. Lett. , 2020 , 11 ( 23 ): 1 0016– 10022 .
Shivalingam A , Izquierdo M A , Le Marois A , Vyšniauskas A , Suhling K , Kuimova M K , Vilar R . Nat. Commun. , 2015 , 6 : 8178 .
Zhuo L X , Wang Y , Zhang C P , Duan J , Zhang Y N . China Biotechnol. (卓丽霞,王莹,张春萍,段静,张亚妮. 中国生物工程杂志), 2017 , 37 ( 1 ): 53 - 57 .
Hao W Y , Wu H C . J. Instrum. Anal . (郝文英,吴海臣,分析测试学报), 2025 , 44 ( 9 ): 1723 - 1726 .
Heinz C , Niederweis M . Anal. Biochem. , 2000 , 285 ( 1 ): 113 – 120 .
Long Y , Cao C . Hu Y X . EP . 3252166 B 1 . 2017-06-12 .
Lu Y , Hu Z L , Ying Y L , Long Y T . J . Instrum. Anal. (路瑶,胡正利,应佚伦,龙亿涛. 分析测试学报), 2019 , 38 ( 2 ): 129 - 133 .
You J , Li H , Lu X M , Li W , Wang P Y , Dou S X , Xi X G . Biosci. Rep. , 2017 , 37 ( 4 ): BSR20170771 .
Yang C , Liu L , Zeng T , Yang D W , Yao Z Y , Zhao Y L , Wu H C . Anal. Chem. , 2013 , 85 ( 15 ): 7302 - 7307 .
Zhang L , Zhang K X , Rauf S , Dong D , Liu Y , Li J H . Anal. Chem. , 2016 , 88 ( 8 ): 4533 - 4540 .
Zhao X J , Qin H J , Tang M L , Zhang X Y , Qing G Y . Trac Trends Anal. Chem. , 2024 , 173 : 117658 .
Flynn C D , Chang D R , Lee Y , Isaacson S E , Wu Z W , Rivnay J , Kelley S O . J. Am. Chem. Soc. , 2025 , 147 ( 38 ): 34204 - 34210 .
Shim J , Gu L Q . Methods , 2012 , 57 ( 1 ): 40 - 46 .
An N , Fleming A M , Middleton E G , Burrows C J . Proc. Natl. Acad. Sci. U.S.A. , 2014 , 111 ( 40 ): 14325 - 14331 .
Zhu J B , Bošković F , Keyser U F . Nano Lett. , 2022 , 22 ( 12 ): 4993 - 4998 .
Henderson A , Wu Y , Huang Y C , Chavez E A , Platt J , Johnson F B , Brosh R M , Sen D , Lansdorp P M . Nucleic Acids Res. , 2014 , 42 ( 2 ): 860 - 869 .
Biffi G , Tannahill D , McCafferty J , Balasubramanian S . Nat. Chem. , 2013 , 5 ( 3 ): 182 - 186 .
Lam E Y N , Beraldi D , Tannahill D , Balasubramanian S . Nat. Commun. , 2013 , 4 : 1796 .
Schaffitzel C , Berger I , Postberg J , Hanes J , Lipps H J , Plückthun A . Proc. Natl. Acad. Sci. U.S.A. , 2001 , 98 ( 15 ): 8572 - 8577 .
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