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Updated: May 1, 2026

Simple and Fast Rolling Circle Amplification-Based Detection of Topoisomerase 1 Activity in Crude Biological Samples
Published on: December 2, 2022
Sensitive detection of polynucleotide kinase using rolling circle amplification-induced chemiluminescence
Wei Tang1, Guichi Zhu, Chun-yang Zhang
1Single-Molecule Detection and Imaging Laboratory, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China. zhangcy@siat.ac.cn.
Abstract:
We develop a new method for the sensitive detection of polynucleotide kinase (PNK) using rolling circle amplification-induced chemiluminescence. This method exhibits high sensitivity with a detection limit of 2.20 × 10(-4) U mL(-1), which is superior to most reported approaches. Moreover, this method can be used to screen both the inhibitors and the activators of PNK, and can be further applied for real sample analysis.
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