Compositions, methods and kits relating to reprogramming adult differentiated cells and production of embryonic stem cell-like cells
First Claim
1. A method of producing a reprogrammed embryonic stem-cell like cell (ES-like cell), said method comprising contacting a differentiated adult cell with a Mycobacterium leprae bacterium, or a component thereof, thereby producing said reprogrammed ES-like cell.
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Accused Products
Abstract
The present invention includes compositions, methods and kits for non-nuclear transfer reprogramming an adult differentiated cell obtained from an adult tissue into an ES-like cell. The reprogrammed cell can be converted into an ES-like cell which can be re- or trans-differentiated into various differentiated cell types. The present invention further relates to identification of a novel signaling pathway, and components thereof, which effect reprogramming of a cell. The present invention further comprises compositions, methods and kits for regulating the mammalian cell cycle and cellular proliferation, as well as for treating diseases and for identifying components that affect the cell cycle, and reprogram cells, among other things.
46 Citations
49 Claims
- 1. A method of producing a reprogrammed embryonic stem-cell like cell (ES-like cell), said method comprising contacting a differentiated adult cell with a Mycobacterium leprae bacterium, or a component thereof, thereby producing said reprogrammed ES-like cell.
- 12. An isolated ES-like cell, wherein said cell is produced by contacting an adult differentiated cell with a Mycobacterium leprae bacterium, or a component thereof.
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14. A method of producing a re-differentiated cell, said method comprising
(a) contacting a differentiated adult cell with a Mycobacterium leprae bacterium, or a component thereof, thereby producing a reprogrammed ES-like cell; -
(b) incubating said reprogrammed ES-like cell in a progenitor cell medium, thereby producing a stem cell-like cell and;
(c) re-differentiating said stem cell-like cell into a differentiated cell of the same cell type as said differentiated adult cell, thereby producing a re-differentiated cell. - View Dependent Claims (15, 16, 17, 18)
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19. A method of producing a trans-differentiated cell, said method comprising
(a) contacting a differentiated adult cell with a Mycobacterium leprae bacterium, or a component thereof, thereby producing a reprogrammed ES-like cell; -
(b) incubating said reprogrammed ES-like cell in a progenitor cell medium, thereby producing a stem cell-like cell and;
(c) trans-differentiating said stem cell-like cell into a differentiated cell of a different cell lineage than said differentiated adult cell, thereby producing a trans-differentiated cell. - View Dependent Claims (20, 21)
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- 22. A method of producing a neurosphere, said method comprising contacting a differentiated adult Schwann cell with a Mycobacterium leprae bacterium, or a component thereof, thereby reprogramming said Schwann cell to produce an ES-like cell, and incubating said reprogrammed ES-like cell in a progenitor medium, thereby producing a neurosphere.
- 24. A method of producing a neuron-like cell, said method comprising contacting a differentiated adult Schwann cell with a Mycobacterium leprae bacterium, or a component thereof, thereby reprogramming said Schwann cell into an ES-like cell, incubating said reprogrammed ES-like cell in a progenitor medium to produce a neurosphere, and incubating said neurosphere in a neuronal differentiation medium, thereby producing a neuron-like cell.
- 26. A method of producing an oligodendrocyte-like cell, said method comprising contacting a differentiated adult Schwann cell with a Mycobacterium leprae bacterium, or a component thereof, thereby reprogramming said Schwann cell into an ES-like cell, incubating said reprogrammed ES-like cell in a progenitor medium to produce a neurosphere, and incubating said neurosphere in an oligodendrocyte differentiation medium, thereby producing an oligodendrocyte-like cell.
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28. A method of affecting the passage of a cell through the cell cycle, said method comprising contacting a cell with a Mycobacterium leprae bacterium, or a component thereof, thereby affecting the passage of said cell through the cell cycle.
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29. A method of increasing the level of cyclin D1 expression in a cell, said method comprising contacting a cell with a Mycobacterium leprae bacterium, or component thereof, thereby increasing the level of cyclin D1 expression in said cell.
- 30. A method of inducing MEK/Pi3K-independent phosphorylation of Erk1/2 in a cell, said method comprising contacting a cell with a Mycobacterium leprae bacterium, or component thereof, thereby inducing MEK/Pi3K-independent phosphorylation of Erk1/2 in said cell.
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32. A method of inducing MEK/Pi3K-independent phosphorylation of GSK3β
- in a cell, said method comprising contacting a cell with a Mycobacterium leprae bacterium, or component thereof, thereby inducing MEK/Pi3K-independent phosphorylation of GSK3β
in said cell. - View Dependent Claims (33)
- in a cell, said method comprising contacting a cell with a Mycobacterium leprae bacterium, or component thereof, thereby inducing MEK/Pi3K-independent phosphorylation of GSK3β
- 34. A method of identifying a component a Mycobacterium leprae bacterium that reprograms a differentiated cell, said method comprising contacting a differentiated adult cell with a component of a Mycobacterium leprae bacterium, and comparing the level of a marker of an undifferentiated state in said cell contacted with said component with the level of said marker in an otherwise identical cell not contacted with said component, wherein a higher level said marker in said cell contacted with said component compared with said level of said marker in said cell not contacted with said component is an indication that said component reprogrammed said cell, thereby identifying a component a Mycobacterium leprae bacterium that reprograms a differentiated cell.
- 37. A method of identifying a component of a Mycobacterium leprae bacterium that affects progression of a cell through the cell cycle, said method comprising contacting a cell with a component of a Mycobacterium leprae bacterium, and comparing the progression of said cell through the cell cycle with the progression through the cell cycle by an otherwise identical cell not contacted with said component, wherein a faster progression through said cell cycle by said cell contacted with said component compared with said progression through said cell cycle by said cell not contacted with said component is an indication that said component affects progression of a cell through the cell cycle, thereby identifying a component of a Mycobacterium leprae bacterium that affects progression of a cell through the cell cycle.
- 39. A method of identifying a component of a Mycobacterium leprae bacterium that increases cell proliferation, said method comprising contacting a cell with a component of a Mycobacterium leprae bacterium, and comparing the level of proliferation of said cell with the level of proliferation of an otherwise identical cell not contacted with said component, wherein a greater level of proliferation of said cell contacted with said component compared with said level of proliferation of said otherwise identical cell not contacted with said component is an indication that said component increases cell proliferation, thereby identifying a component of a Mycobacterium leprae bacterium that increases cell proliferation.
- 46. A kit for reprogramming an adult differentiated cell, said kit comprising an irradiated Mycobacterium leprae bacterium, or a component thereof, and said kit further comprising an applicator and an instructional material for use thereof.
Specification