Microchimica Acta

, 185:364 | Cite as

Aptamer-based fluorometric lateral flow assay for creatine kinase MB

  • Jing Zhang
  • Xuefei Lv
  • Wei Feng
  • Xiaoqiong LiEmail author
  • Kunjie Li
  • Yulin Deng
Original Paper


A group of aptamers possessing high specificity and affinity for creatine kinase MB (CKMB) was obtained by magnetic systematic evolution of ligands by exponential enrichment. Two aptamers (referred to as C.Apt.21 and C.Apt.30) were found to possess adequately low Kd values. They form a well suited pair for CKMB binding. By using fluorescent microspheres, an aptamer-based lateral flow assay was developed. It is portable, economical, and sensitive. The limit of detection for CKMB is as low as 0.63 ng·mL-1, and the assay works in the 0.005 - 2 μg·mL-1 CKMB concentration range. The method is specific for CKMB, and biomarkers for AMI (such as cardiac troponin I and myoglobin) and serum do not interfere. The strip is highly accurate as shown by analysis of spiked serum samples which gave recoveries ranging between 88 and 117%.

Graphical Abstract

Schematic of the test strip and sandwich aptamer-based fluorometric lateral flow assay for creatine kinease. The detection is based on the specific affinity between CKMB and selected aptamers to form a sandwich structure.


CKMB Aptamer Magnetic SELEX Lateral flow Fluorescent microsphere Nanoparticles Rapid detection Test strip reader Sandwich Acute myocardial infarction 



This work was partly supported by the National Special R&D Programmer for Key Scientific Instruments and Equipment (2012YQ04014001) and the Beijing Institute of Technology Research Foundation (3160050321211).

Compliance with ethical standards

The author(s) declare that they have no competing interests.

Supplementary material

604_2018_2905_MOESM1_ESM.docx (1.2 mb)
ESM 1 (DOCX 1278 kb)


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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2018

Authors and Affiliations

  • Jing Zhang
    • 1
  • Xuefei Lv
    • 1
  • Wei Feng
    • 1
  • Xiaoqiong Li
    • 1
    Email author
  • Kunjie Li
    • 1
  • Yulin Deng
    • 1
  1. 1.Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals, School of Life ScienceBeijing Institute of TechnologyBeijingPeople’s Republic of China

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