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    • 33. 发明申请
    • GRANULOCYTIC AND MONOCYTIC DIFFERENTIATION OF CD34hi CELLS ASSOCIATED WITH DISTINCT CHANGES IN THE EXPRESSION OF THE PU.1 REGULATED MOLECULES, CD64 AND M-CSFR
    • 与表达PU.1调节分子,CD64和M-CSFR相关的不同变化相关的CD34细胞的颗粒细胞和单核细胞差异
    • WO1998014783A1
    • 1998-04-09
    • PCT/US1997017453
    • 1997-09-29
    • BECTON DICKINSON AND COMPANY
    • BECTON DICKINSON AND COMPANYOLWEUS, JohannaLUND-JOHANSEN, FridtjofTHOMPSON, Peter
    • G01N33/53
    • C12N5/0645C12N5/0642C12N2501/125C12N2501/14C12N2501/22C12N2501/23G01N33/56972
    • The present invention demonstrates that M-CSF responsiveness and the M-CSFR expression can be used to discriminate monocytic and granulocytic cells within a population of cells which strongly expresses the CD34 antigen (CD34 ). Briefly, the method comprises isolating phenotypically and functionally defined CD34 subsets, and staining with anti-M-CSFR monoclonal antibodies to measure expression on these primitive progenitors and cells committed to the granulocytic and monocytic lineages, based upon expression of M-CSFR. CD34 M-CSFR cells are highly clonogenic and approximately 70 % of the colonies are CFU-M (monocytic), whereas less than 20 % were CFU-G (granulocytic). In contrast, CD34 cells that were positive for the granulo-monocytic marker CD64 and negative for the M-CSFR contained high frequencies of 91 % pure CFU-Gs. After 60h in culture, CD34 M-CSFR cells developed into distinct populations of M-CSFR and M-CSFR cells. These two populations gave rise almost exclusively to monocytes and granulocytes, respectively. This result demonstrates that M-CSF target specificity among human hematopoietic progenitor cells is determined by lineage-specific regulation of the M-CSFR and demonstrate that M-CSFR is a useful marker to discriminate CFU-Ms from CFU-Gs.
    • 本发明证实M-CSF响应性和M-CSFR表达可用于区分强烈表达CD34抗原(CD34ζ)的细胞群体内的单核细胞和粒细胞。 简而言之,该方法包括分离表型和功能定义的CD34 +亚型,并用抗M-CSFR单克隆抗体染色,以测量基于M-CSFR表达的这些原始祖细胞和致粒细胞和单核细胞谱系的细胞的表达 。 CD34细胞是高度克隆的,大约70%的菌落是CFU-M(单核细胞),而小于20%是CFU-G(粒细胞)。 相比之下,对于粒细胞单核细胞标志物CD64呈阳性且M-CSFR阴性的CD34细胞含有91%纯CFU-Gs的高频率。 培养60小时后,将CD34M-CSFR细胞发育成M-CSFR和M-CSFR细胞的不同群体。 这两个群体几乎分别产生单核细胞和粒细胞。 该结果表明,通过M-CSFR的谱系特异性调节来确定人造血祖细胞中的M-CSF靶特异性,并证明M-CSFR是鉴别CFU-Ms与CFU-Gs的有用标记。