Volume 1 Issue 9
Sep.  2010
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Xiaoli Zhu, Ya Cao, Zhiqiang Liang, Genxi Li. Aptamer-based and DNAzyme-linked colorimetric detection of cancer cells[J]. Protein&Cell, 2010, 1(9): 842-846. doi: 10.1007/s13238-010-0110-2
Citation: Xiaoli Zhu, Ya Cao, Zhiqiang Liang, Genxi Li. Aptamer-based and DNAzyme-linked colorimetric detection of cancer cells[J]. Protein&Cell, 2010, 1(9): 842-846. doi: 10.1007/s13238-010-0110-2

Aptamer-based and DNAzyme-linked colorimetric detection of cancer cells

doi: 10.1007/s13238-010-0110-2
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This work is supported by the National Science Fund for Distinguished Young Scholars (Grant No. 20925520).

  • Received Date: 2010-08-11
  • Rev Recd Date: 2010-09-06
  • This paper reports a novel method to detect human leukemic lymphoblasts (CCRF-CEM cells). While the aptamer of the cancer cells was employed as the recognition element to target cancer cells, peroxidaseactive DNAzyme was used as the sensing element to produce catalysis-induced colorimetric signals. The elegant architecture integrating the aptamer and DNAzyme made it feasible to detect cancer cells easily and rapidly by the color change of the substrate for DNAzyme. Experimental results showed that 500 cells can well indicate the cancer, while as control, 250,000 Islet Island Beta cells only show tiny signals, suggesting that the method proposed in this paper has considerable sensitivity and selectivity. Furthermore, since it does not require expensive apparatus, or modification or label of DNA chains, the method we present here is also costeffective and conveniently operated, implying potential applications in future cancer diagnosis.
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