Xing Huang, Zihao Li, Yakun Shi, Yanfei Zhang, Taorong Shen, Meng Chen, Zhan Huang, Yanli Tong, Si-Yang Liu, Jianhe Guo, Xiaoyong Zou, Zong Dai
Autocatalytic biocircuit are powerful tools for analysing intracellular biomarkers, but these tools are constrained by limitations in amplification capacity and intracellular delivery efficiency. In this work, we developed a DNAzyme-based dual-feedback autocatalytic exponential amplification biocircuit sustained by a honeycomb MnO2 nanosponge (EDA2 @hMNS) for live-cell imaging of intracellular low-abundance microRNAs (miRNA). The EDA2 biocircuit comprises a blocked DNAzyme (b-DNAzyme), a Fuel strand and a Substrate strand...
September 7, 2023: Biosensors & Bioelectronics