Sheikhzadeh S, Hammers HJ, Hartwig D, Kirchner H, Schlenke P. Improvement of the precision in CFU-GM and BFU-E counting by flow cytometry-based standardization of short-term culture assays.
JOURNAL OF HEMATOTHERAPY & STEM CELL RESEARCH 2001;
10:881-5. [PMID:
11798514 DOI:
10.1089/152581601317210971]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The counting of colony-forming units granulocyte-macrophage (CFU-GM) and burst-forming units erythrocyte (BFU-E) provides substantial in vitro information about the graft quality after peripheral stem cell transplantation (PBSCT). By using different techniques for culturing and scoring, high inter- and intralaboratory coefficients of variation (CV) are frequently reported. We minimized the imprecision by using flow cytometry-based incorporation of constant numbers of CD34(+) cells per culture dish instead of the formerly used mononuclear cells. Our results show acceptable CVs for CFU-GM (12.3%) and for BFU-E (13.3%) based on this seeding technique, which contributes to fulfilling the demands of a quality assurance system in stem cell laboratories.
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