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Biomedical Microdevices

, 17:118 | Cite as

Isolation of nucleated red blood cells in maternal blood for Non-invasive prenatal diagnosis

  • Yeongje Byeon
  • Chang-Seok KiEmail author
  • Ki-Ho HanEmail author
Article

Abstract

This paper introduces a two-step cascade enrichment method for isolating nucleated red blood cells (NRBCs) in maternal blood. The two-step enrichment platform consists of a positive enrichment process based on a red blood cell (RBC) hyperaggregation method and a negative enrichment process using microfluidic technology. An analytical evaluation using blood samples from patients with leukemia showed that the while blood cell (WBC) depletion and NRBC loss rates of the positive enrichment process were 93.98 % and 6.02 %, respectively. Through the two-step cascade enrichment method, 1–396 NRBCs and only 0–6 WBCs were isolated from 1 mL of 18 maternal blood samples. Experimental results also showed that the WBC depletion rate of the proposed two-step method was more than 625,000-fold, and the purity of enriched NRBCs ranged from 20 % to 100 %. Furthermore, SRY (the sex-determining region of the Y chromosome) genes were detected in enriched NRBCs, thereby demonstrating that enriched NRBCs contain fetus-derived NRBCs.

Keywords

Nucleated red blood cells Prenatal diagnosis RBC hyperaggregation Lateral magnetophoretic microseparator Microfluidic device 

Notes

Acknowledgments

This work was supported by Mid-career Research Program through NRF grant funded by the MEST (Grant No. NRF-2012R1A2A2A03045174).

Supplementary material

10544_2015_21_MOESM1_ESM.doc (4.5 mb)
ESM 1 (DOC 4640 kb)

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Department of Nano Science and Engineering, Center for Nano ManufacturingInje UniversityGimhaeRepublic of Korea
  2. 2.Department of Laboratory Medicine and Genetics, Samsung Medical CenterSungkyunkwan University School of MedicineGangnam-guRepublic of Korea

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