Method of concentrating and separating dopaminergic neurons
First Claim
1. A method for enriching and/or isolating dopaminergic neurons from a non-human transgenic animal or its progeny, which comprises:
- introducing a recombinant vector comprising a reporter nucleic acid molecule that expresses a fluorescent protein under control of the promoter/enhancer of a tyrosine hydroxylase gene of the non-human animal into a fertilized egg of the non-human animal,developing the non-human fertilized egg whose genome comprises the reporter nucleic molecule into a non-human transgenic animal by transfer to a surrogate mother, andisolating cells that emit a fluorescent signal from a plurality of cells of the non-human transgenic animal or its progeny whose genome comprises the reporter nucleic acid molecule, wherein the fluorescence-emitting cells are dopaminergic neurons.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention of this application provides a method comprising introducing a reporter nucleic acid molecule that expresses a fluorescent protein under control of the promoter/enhancer of a gene that is expressed in dopaminergic neurons, into each of cells, and isolating fluorescence-emitting cells. The invention also provides a method for visualizing and identifying dopaminergic neurons alive that exist with in cells, which comprises introducing the above-mentioned reporter nucleic acid molecule into each of cells, and measuring the fluorescence distribution within the cells. The invention further provides a method for identifying a dopaminergic neurons-inducing factor, which comprises introducing the reporter nucleic acid molecule into cells that have the ability to differentiate into dopaminergic neurons, then incubating the cells with a candidate substance, and determining whether the candidate substance is a dopaminergic neurons-inducing factor by using the fluorescence of the cells as an indicator.
6 Citations
20 Claims
-
1. A method for enriching and/or isolating dopaminergic neurons from a non-human transgenic animal or its progeny, which comprises:
-
introducing a recombinant vector comprising a reporter nucleic acid molecule that expresses a fluorescent protein under control of the promoter/enhancer of a tyrosine hydroxylase gene of the non-human animal into a fertilized egg of the non-human animal, developing the non-human fertilized egg whose genome comprises the reporter nucleic molecule into a non-human transgenic animal by transfer to a surrogate mother, and isolating cells that emit a fluorescent signal from a plurality of cells of the non-human transgenic animal or its progeny whose genome comprises the reporter nucleic acid molecule, wherein the fluorescence-emitting cells are dopaminergic neurons. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method for identifying live dopaminergic neurons from a non-human transgenic animal or its progeny, which comprises:
-
introducing a recombinant vector comprising a reporter nucleic acid molecule that expresses a fluorescent protein under control of the promoter/enhancer of a tyrosine hydroxylase gene of the non-human animal into a fertilized egg of the non-human animal, developing the non-human fertilized egg whose genome comprises the reporter nucleic acid molecule into a non-human transgenic animal by transfer to a surrogate mother, and measuring the fluorescence distribution within a plurality of cells obtained from the non-human animal or its progeny whose genome comprises the reporter nucleic acid molecule, wherein the fluorescence is an indicator of live dopaminergic neurons. - View Dependent Claims (8, 9, 10)
-
-
11. A method for identifying a factor which induces cells to differentiate into dopaminergic neurons, which comprises:
-
introducing a recombinant vector comprising a reporter nucleic acid molecule that expresses a fluorescent protein under control of the promoter/enhancer of a tyro sine hydroxylase gene of the non-human animal into a fertilized egg of the non-human animal, developing the non-human fertilized egg whose genome comprises the reporter nucleic acid molecule into a non-human transgenic animal by transfer to a surrogate mother, incubating cells obtained from the non-human transgenic animal or its progeny whose genome comprises the reporter nucleic acid molecule with a candidate substance, and determining whether the candidate substance is the dopaminergic neuron-inducing factor by identifying cells that emit a fluorescent signal, greater than background fluorescence to indicate the presence of the dopaminergic neuron-inducing factor. - View Dependent Claims (12, 13, 14)
-
-
15. A method for enriching and/or isolating dopaminergic neurons from a transgenic mouse or its progeny, which comprises:
-
introducing a recombinant vector comprising a reporter nucleic acid molecule that expresses a fluorescent protein under control of the promoter/enhancer of a tyro sine hydroxylase gene of the mouse or the promoter/enhancer of a tyrosine hydroxylase gene obtained from a rat into mouse ES cells, developing the mouse ES cells whose genome comprises the reporter nucleic acid molecule into a transgenic mouse by introducing the ES cells into a blastocyst and transferring the blastocyst to a surrogate mother, and isolating cells that emit a fluorescent signal from a plurality of cells obtained from the transgenic mouse or its progeny whose genome comprises the reporter nucleic acid molecule, wherein the fluorescence-emitting cells are dopaminergic neurons. - View Dependent Claims (16, 17, 18)
-
-
19. A method for identifying live dopaminergic neurons from a transgenic mouse or its progeny, which comprises:
-
introducing a recombinant vector comprising a reporter nucleic acid molecule that expresses a fluorescent protein under control of the promoter/enhancer of a tyrosine hydroxylase gene of the mouse or the promoter/enhancer of a tyrosine hydroxylase gene obtained from a rat into mouse ES cells, developing the mouse ES cells whose genome comprises the reporter nucleic acid molecule into a transgenic mouse by introducing the ES cells into a blastocyst and transferring the blastocyst to a surrogate mother, and measuring the fluorescence distribution within a plurality of cells obtained from the transgenic mouse or its progeny whose genome comprises the reporter nucleic acid molecule, wherein the fluorescence is an indicator of live dopaminergic neurons. - View Dependent Claims (20)
-
Specification