4.7 Article

Multiplex detection of histone-modifying enzymes by total internal reflection fluorescence-based single-molecule detection

Journal

CHEMICAL COMMUNICATIONS
Volume 52, Issue 6, Pages 1218-1221

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5cc08797j

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Funding

  1. National Natural Science Foundation of China [21325523, 21527811]
  2. Award for the Hundred Talent Program of Nanyue of Guangdong Province
  3. Award for Pengcheng Distinguished Scholars of Shenzhen City
  4. Award for Team Leader Program of Taishan Scholars of Shandong Province, China

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We develop a sensitive and selective method for the multiplex detection of histone-modifying enzymes (HMEs) through the integration of antibody-based fluorescence labeling with total internal reflection fluorescence (TIRF)-based single-molecule detection. This method exhibits excellent specificity and high sensitivity with a detection limit of 21 pM for histone acetyltransferase GcN5 and 12 pM for histone methyltransferase G9a, and it can be applied for the screening of HME inhibitors as well.

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