1 Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China. hjwang@swu.edu.cn yuanruo@swu.edu.cn.
A novel double-hairpin DNA inducing a dual circuit catalyzed hairpin assembly (DC-CHA) strategy was proposed to fabricate electrochemiluminescence (ECL) biosensors for multiple target (microRNA-21 and microRNA-155) ultrasensitive detection.