Hematopoietic stem cells and methods of treatment of neovascular eye diseases therewith
First Claim
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1. An isolated, CD133 positive human lineage negative hematopoietic stem cell population, which comprises human hematopoietic stem cells and endothelial progenitor cells, wherein the stem cell population is isolated by the steps of:
- (a) labeling a plurality of isolated human bone marrow monocytes with a panel of biotin-conjugated antibodies selective for lineage surface antigens CD2, CD3, CD4, CD11a, Mac-1, CD14, CD16, CD19, CD24, CD33, CD38, CD45RA, CD64, CD68, CD86, and CD235a;
(b) removing monocytes that are positive for said lineage surface antigens from the labeled plurality of isolated human bone marrow monocytes produced in step (a) to form a lineage negative stem cell population;
(c) labeling the lineage negative stem cell population with a CD133 antibody; and
(d) recovering a population of human CD133 positive, lineage negative hematopoietic stem cells containing endothelial progenitor cells therefrom.
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Abstract
Isolated, mammalian, adult bone marrow-derived, lineage negative hematopoietic stem cell populations (Lin− HSCs) contain endothelial progenitor cells (EPCs) capable of rescuing retinal blood vessels and neuronal networks in the eye. Preferably at least about 20% of the cells in the isolated Lin− HSCs express the cell surface antigen CD31 and not more than about 1 percent of the cells express Tie-2. The isolated Lin− HSC populations are useful for treatment of ocular vascular diseases.
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Citations
3 Claims
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1. An isolated, CD133 positive human lineage negative hematopoietic stem cell population, which comprises human hematopoietic stem cells and endothelial progenitor cells, wherein the stem cell population is isolated by the steps of:
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(a) labeling a plurality of isolated human bone marrow monocytes with a panel of biotin-conjugated antibodies selective for lineage surface antigens CD2, CD3, CD4, CD11a, Mac-1, CD14, CD16, CD19, CD24, CD33, CD38, CD45RA, CD64, CD68, CD86, and CD235a; (b) removing monocytes that are positive for said lineage surface antigens from the labeled plurality of isolated human bone marrow monocytes produced in step (a) to form a lineage negative stem cell population; (c) labeling the lineage negative stem cell population with a CD133 antibody; and (d) recovering a population of human CD133 positive, lineage negative hematopoietic stem cells containing endothelial progenitor cells therefrom. - View Dependent Claims (2, 3)
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Specification