Method of staining target interphase chromosomal DNA
First Claim
Patent Images
1. A method of staining by in situ hybridization a target chromosome, over the entire length of the body of the target chromosome, the method comprising:
- providing a heterogeneous mixture comprising labeled unique sequence nucleic acid fragments which are substantially complementary to nucleic acid segments substantially uniformly distributed over the entire length of the body of the target chromosome, and which have been prepared from chromosome-specific DNA which has been isolated from a pre-selected chromosome, wherein the pre-selected chromosome has first been isolated away from other chromosomes; and
employing the heterogeneous mixture and the target chromosome in in situ hybridization so that hybridization of unique segments within the labeled nucleic acid to the target chromosome is allowed and the presence of fluorescently labeled unique sequence nucleic acid fragments over substantially the entire length of the body of the target chromosome is detected, wherein the target chromosome is present as a morphologically identifiable chromosome during the in situ hybridization, and wherein substantially all of the repetitive sequences within the target chromosome are not stained by in situ hybridization.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and compositions for chromosome-specific staining are provided. Compositions comprise heterogeneous mixtures of labeled nucleic acid fragments having substantially complementary base sequences to unique sequence regions of the chromosomal DNA for which their associated staining reagent is specific. Methods include methods for making the chromosome-specific staining compositions of the invention, and methods for applying the staining compositions to chromosomes.
24 Citations
15 Claims
-
1. A method of staining by in situ hybridization a target chromosome, over the entire length of the body of the target chromosome, the method comprising:
-
providing a heterogeneous mixture comprising labeled unique sequence nucleic acid fragments which are substantially complementary to nucleic acid segments substantially uniformly distributed over the entire length of the body of the target chromosome, and which have been prepared from chromosome-specific DNA which has been isolated from a pre-selected chromosome, wherein the pre-selected chromosome has first been isolated away from other chromosomes; and
employing the heterogeneous mixture and the target chromosome in in situ hybridization so that hybridization of unique segments within the labeled nucleic acid to the target chromosome is allowed and the presence of fluorescently labeled unique sequence nucleic acid fragments over substantially the entire length of the body of the target chromosome is detected, wherein the target chromosome is present as a morphologically identifiable chromosome during the in situ hybridization, and wherein substantially all of the repetitive sequences within the target chromosome are not stained by in situ hybridization. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification