title: A rapid and simple method for efficient capture and accurate discrimination of circulating tumor cells using aptamer conjugated magnetic beads and surface-enhanced Raman scattering imaging.
abstract: The efficient isolation and the accurate phenotype discrimination of circulating tumor cells (CTCs) are expected to provide much valuable information for the understanding of tumor metastasis and to play an important role in personalized treatment of cancer patients in the future. In this study, we developed a novel, rapid, and simple method for efficient capture and accurate identification of CTCs using aptamer conjugated magnetic beads and surface-enhanced Raman scattering (SERS) imaging technique. Using aptamer conjugated magnetic beads, rare target cancer cells can be captured efficiently from buffer and whole blood sample with capture efficiency of 73 % and 55 %, respectively. Meanwhile, captured cancer cells were labeled by specific SERS probes and can be identified readily and accurately by SERS imaging technique. Results of our experiment demonstrate the potential feasibility of aptamer conjugated magnetic beads coupled with SERS imaging technique for the efficient capture and accurate discrimination of CTCs in clinical whole blood sample. Graphical Abstract Schematic Representation of CTCs Capture and Identification Using Apt-MBs and SERS Imaging.
authors.affiliation: Department of Chemistry and Institute of Biomedical Sciences, Fudan University, Shanghai, 200433, China.
authors.forename: Changlong
authors.initials: C
authors.lastname: Sun
authors.affiliation: Department of Chemistry and Institute of Biomedical Sciences, Fudan University, Shanghai, 200433, China.
authors.forename: Ren
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Department of Chemistry and Institute of Biomedical Sciences, Fudan University, Shanghai, 200433, China. mxgao@fudan.edu.cn.
authors.forename: Mingxia
authors.initials: M
authors.lastname: Gao
authors.affiliation: Department of Chemistry and Institute of Biomedical Sciences, Fudan University, Shanghai, 200433, China.
authors.forename: Xiangmin
authors.initials: X
authors.lastname: Zhang
mesh_terms: D052157:Aptamers, Nucleotide / Q000737:chemistry*; D002452:Cell Count; D045744:Cell Line, Tumor; D002469:Cell Separation / Q000379:methods*; D006801:Humans; D060526:Magnetic Fields; D059346:Magnets / Q000737:chemistry*; D009369:Neoplasms / Q000097:blood*; D009360:Neoplastic Cells, Circulating / Q000473:pathology*; D013059:Spectrum Analysis, Raman / Q000379:methods*
chemical_list: D052157:Aptamers, Nucleotide
keywords: Aptamer; Circulating tumor cells; Magnetic separation; Surface-enhanced Raman scattering imaging