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Updated: Jan 27, 2026

Assays for Validating Histone Acetyltransferase Inhibitors
Published on: August 6, 2020
A novel ECL method for histone acetyltransferases (HATs) activity analysis by integrating HCR signal amplification
Yan Zou1, Huixin Zhang1, Zonghua Wang2
1Department of Chemistry, Beijing Key Laboratory for Analytical Methods and Instrumentation, Kay Lab of Bioorganic Phosphorus Chemistry and Chemical Biology of Ministry of Education, Tsinghua University, Beijing 100084, China; Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, China.
Abstract:
A novel electrogenerated chemiluminescence (ECL) method combining ECL property of silver clusters and hybridization chain reaction (HCR) signal amplification strategy has been designed for the analysis of histone acetyltransferases (HATs) activity and inhibitor evaluation. In this strategy, the substrate peptide of HAT released from the electrode surface due to the charge change based on the acetylated reaction in the presence of HATs, and then the exposed DNA on the electrode initiated the HCR to form the supersandwich DNA sequence, which can adsorb Ag+, and the silver clusters (AgNCs) generated by the electrochemical reduction. The ECL signal generated by AgNCs can be utilized for HATs activities detection. The detection limit of the as-prepared ECL method was 0.49 nM (S/N = 3). The novel ECL method can be used for HATs activity analysis and inhibition in MCF-7 cell lysates which shows high promise in HATs-related clinical diagnostics.
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