摘要:
Immunocompromised mammalian hosts are sub-cutaneously implanted with a combination of human fetal bone and spleen. The chimeric animals can produce human B-cells, myeloid cells and T-cells for up to 9 months in vivo when supplied with an allogeneic human fetal thymic fragment at the same site. Grafts contain cell populations expressing CD4 and CD8, CD19 or CD33, CD14 and CD15, all of which also express the HLA type of the fetal bone/spleen. T-cells derived from progenitors in the fetal bone/spleen contain both mature single positive CD4+CD8−, CD8+CD4− as well as a high percentage of immature double positive CD4+CD8+ populations.
摘要:
A method for obtaining human hematopoietic stem cells is provided by enrichment for stem cells using a novel stem cell marker. Compositions enriched for stem cells are obtained using novel antibody HCC-1 which is specific for a CD59 epitope highly accessible on stem cells, and less accessible or absent on mature cells. The enriched population of cells derived from these methods are also provided.
摘要:
This invention provides a novel antibody, designated the .alpha.EM10 antibody. Also provided are methods of determining hematopoietic stem cell content. The methods employ using antibodies (.alpha.EM10) specific for a unique cell marker (EM10) that is expressed on stem cells.
摘要:
This invention provides a novel antibody, designated .alpha.EM10, and a hybridoma cell line that produces the .alpha.EM10 antibody. Also provided are methods to obtain compositions enriched for hematopoietic stem cells. The methods employ a separation technique utilizing antibodies (.alpha.EM10) specific for a unique cell marker (EM10) that is expressed on stem and progenitor cells, while being less accessible or absent on more mature cells. Further provided are cell compositions enriched for EM10+ cells.