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2010 ; 14
(7
): 1953-61
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Microselection--affinity selecting antibodies against a single rare cell in a
heterogeneous population
#MMPMID20726925
Sørensen MD
; Agerholm IE
; Christensen B
; Kølvraa S
; Kristensen P
J Cell Mol Med
2010[Jul]; 14
(7
): 1953-61
PMID20726925
show ga
Rare cells not normally present in the peripheral bloodstream, such as
circulating tumour cells, have potential applications for development of
non-invasive methods for diagnostics or follow up. Obtaining these cells however
require some means of discrimination, achievable by cell type specific
antibodies. Here we have generated a microselection method allowing antibody
selection, by phage display, targeting a single cell in a heterogeneous
population. One K562 cell (female origin) was positioned on glass slide among
millions of lymphocytes from male donor, identifying the K562 cell by FISH (XX).
Several single cell selections were performed on such individual slides. The
phage particles bound to the target cell is protected by a minute disc, while
inactivating all remaining phage by UV-irradiation; leaving only the phage bound
to the target cell viable. We hereby retrieved up to eight antibodies per single
cell selection, including three highly K562 cell type specific.