Journal
ADVANCED HEALTHCARE MATERIALS
Volume 7, Issue 24, Pages -Publisher
WILEY
DOI: 10.1002/adhm.201801231
Keywords
aptamers-magnetic nanoparticles; circulating tumor cells; genetic analysis; microwell chip; tumor heterogeneity
Funding
- National Natural Science Foundation of China [21735006, 21127901, 81741019, 81472186]
- Beijing Municipal Science and Technology Commission [171100001017127]
- Chinese Academy of Sciences
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Detection of circulating tumor cells (CTCs) in peripheral blood is of paramount significance for cancer diagnosis, progress evaluation, and individualized therapy. However, the rareness and heterogeneity of CTCs introduces significant challenges in the capture of cancer cells as well as downstream genetic analysis. In this work, a microwell-assisted multiaptamer immunomagnetic platform (MMAIP) is proposed for highly efficient capture of CTCs with minimum influence of heterogeneity. Assisted by a microwell chip, the purity of CTCs is greatly improved, thus meeting the requirement of downstream gene analysis. This is, as far as is known, the first aptamer based platform enabling mutation analysis of the captured CTCs from cancer patients, which will contribute to the practical application of aptamers in clinics.
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