C - Chemistry – Metallurgy – 12 – Q
Patent
C - Chemistry, Metallurgy
12
Q
C12Q 1/04 (2006.01) C12N 5/02 (2006.01) G01N 33/569 (2006.01)
Patent
CA 2559513
Improved colony forming cell (CFC) assays are described. The improved assay comprises modifications to the standard CFC assay that enable analysis of temporal, real-time changes in antigen expression during colony development without need to fixate or destroy the culture. The improved assay is applicable to hematopoietic CFC assays as well as to CFC assays for other cells, such as neural cells and mammary cells. In one embodiment, the invention comprises adding a detection reagent, most likely a fluorescently labeled antibody, that is specific for antigens (most likely a cell-surface antigen) expressed on progenitors or on specific mature cell types to a culture at the start or during culture. The invention also comprises modifications to the culture medium and cell preparations used in standard CFC assays to selectively promote the development of one colony type while preventing or suppressing the development of other colony types.
Dossantos Gary Peter
Louis Sharon A.
Thomas Terry E.
Wognum Albertus Wernerus
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Stemcell Technologies Inc.
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