METHOD OF GENERATING NATURAL KILLER CELLS AND DENDRITIC CELLS FROM HUMAN EMBRYONIC STEM CELL-DERIVED HEMANGIOBLASTS
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Abstract
This invention provides methods of generating natural killer (NK) cells and dendritic cells (DCs). The methods utilize human hemangioblasts as intermediate cells to generate the NK cells and DCs. In various embodiments, the methods do not require the use of stromal feeder layers.
8 Citations
78 Claims
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1-38. -38. (canceled)
- 39. A method of producing natural killer (NK) cells, the method comprising culturing a hemangioblast under feeder free conditions in a first culture media comprising at least two growth factors selected from the group consisting of SCF, Flt3-ligand (FL), and IL3, thereby producing an NK cell.
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54. A method of producing a human pluripotent stem cell-derived natural killer (NK) cell, the method comprising
(a) differentiating a human pluripotent stem cell to a precursor cell capable of differentiating to give rise to at least hematopoietic cell types, endothelial cell types, or mesodermal derivatives under feeder free conditions in at least one culture media comprising at least one growth factor selected from the group consisting of bone morphogenetic protein 4 (BMP4), vascular endothelial growth factor (VEGF), and bFGF; - and
(b) differentiating the precursor cell to an NK cell under feeder free conditions in at least one culture media comprising at least two growth factors selected from the group consisting of SCF, Flt3-ligand (FL), and IL3. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61)
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62. A method of producing a natural killer (NK) cell, the method comprising
(a) differentiating an embryoid body to a precursor cell capable of differentiating to give rise to at least hematopoietic cell types, endothelial cell types, or mesodermal derivatives under feeder-free conditions in at least one culture media comprising at least two growth factors selected from the group consisting of TPO, vascular endothelial growth factor (VEGF), and Flt3-ligand (FL); - and
(b) differentiating the precursor cell to an NK cell under feeder-free conditions in at least one culture media comprising at least three growth factors selected from the group consisting of SCF, FL, IL3, IL7, IL2, and IL6. - View Dependent Claims (63, 64, 65, 66, 67, 68)
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69. A method of producing a natural killer (NK) cell, the method comprising
(a) culturing an embryoid body in a culture media comprising bone morphogenetic protein 4 (BMP4), vascular endothelial growth factor (VEGF), and bFGF; - and
(b) culturing the product of step (a) in a culture media comprising at least two growth factors selected from the group consisting of TPO, VEGF, and Flt3-ligand (FL); (c) culturing the product of (b) in a culture media comprising at least three growth factors selected from the group consisting of SCF, FL, IL3, IL7, IL2, and IL6, thereby generating an NK cell; wherein the culturing is conducted under feeder-free conditions throughout steps (a)-(c) of the method. - View Dependent Claims (70, 71, 72, 73, 74)
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75. A method of producing a human pluripotent stem cell-derived natural killer (NK) cell, the method comprising
differentiating a human pluripotent stem cell to an NK cell under feeder-free conditions in a series of culture media, wherein (i) a first culture media is a serum-free culture media comprising at least two growth factors selected from the group consisting of bone morphogenetic protein 4 (BMP4), vascular endothelial growth factor (VEGF), and bFGF; - (ii) a second culture media is a serum-free culture media comprising at least two growth factors selected from the group consisting of TPO, VEGF, Flt3-ligand (FL), bFGF, IL2, IL7, and IL15; and
(iii) a third culture media comprises at least three growth factors selected from the group consisting of SCF, FL, IL3, IL7, IL2, and IL6, thereby generating an NK cell. - View Dependent Claims (76, 77, 78)
- (ii) a second culture media is a serum-free culture media comprising at least two growth factors selected from the group consisting of TPO, VEGF, Flt3-ligand (FL), bFGF, IL2, IL7, and IL15; and
Specification