Characterization of a human hematopoietic progenitor cell antigen
First Claim
1. An antibody that specifically binds to the AC133 antigen, wherein said AC133 antigen specifically binds to the antibody produced by the hybridoma cell line ATCC HB 12346.
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Abstract
An hematopoietic progenitor cell antigen, and antibodies that specifically bind to the antigen are provided. Expression of the antigen is highly tissue specific. It is only detected on a subset of hematopoietic progenitor cells derived from human bone marrow, fetal bone marrow and liver, cord blood and adult peripheral blood. The subset of cells recognized by AC133 is CD34bright, and contains substantially all of the CFU-GM activity present in the CD34+ population. This highly specific distribution of AC133 makes it exceptionally useful as a reagent for isolating and characterizing human hematopoietic progenitor and stem cells. Cells selected for expression of AC133 antigen may be further purified by selection for other hematopoietic stem cell and progenitor cell markers.
148 Citations
12 Claims
- 1. An antibody that specifically binds to the AC133 antigen, wherein said AC133 antigen specifically binds to the antibody produced by the hybridoma cell line ATCC HB 12346.
- 5. A monoclonal antibody produced by the hybridoma cell line ATCCHB12346.
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6. A method for enrichment of hematopoietic progenitor cells, said method comprising:
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combining a mixed population of human cells comprising hematopoietic progenitor cells with a reagent that specifically binds to the AC133 antigen; and selecting for those cells that are AC133 positive; wherein said selected cells are enriched in hematopoietic progenitor cell activity. - View Dependent Claims (7)
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Specification