Methods and compositions for chromosome-specific staining
First Claim
1. A method of diagnosing a chromosome abnormality in a patient comprising staining target interphase chromosomal DNA with a high complexity nucleic acid probe, wherein the target interphase chromosomal DNA is stained by contacting interphase chromosomal DNA of the patient with a selected DNA probe which comprises a plurality of nucleotide segments complementary to the chromosomal DNA of interest, under conditions appropriate for hybridization of complementary DNA segments to occur, and further wherein the chromosomal DNA is present in a morphologically identifiable cell nucleus during the hybridization;
- and detecting hybridization between the interphase chromosomal DNA and the selected DNA probe, the occurrence of hybridization being indicative of the presence of a chromosomal abnormality.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and compositions for staining based upon nucleic acid sequence that employ nucleic acid probes are provided. Said methods produce staining patterns that can be tailored for specific cytogenetic analyses. Said probes are appropriate for in situ hybridization and stain both interphase and metaphase chromosomal material with reliable signals. The nucleic acid probes are typically of a complexity greater than 50 kb, the complexity depending upon the cytogenetic application. Methods are provided to disable the hybridization capacity of shared, high copy repetitive sequences and/or remove such sequences to provide for useful contrast. Still further methods are provided to produce chromosome-specific staining reagents which are made specific to the targeted chromosomal material, which can be one or more whole chromosomes, one or more regions on one or more chromosomes, subsets of chromosomes and/or the entire genome. Probes and test kits are provided for use in tumor cytogenetics, in the detection of disease related loci, in analysis of structural abnormalities, such as translocations, and for biological dosimetry. Further, methods and prenatal test kits are provided to stain targeted chromosomal material of fetal cells, including fetal cells obtained from maternal blood. Still further, the invention provides for automated means to detect and analyse chromosomal abnormalities.
51 Citations
17 Claims
-
1. A method of diagnosing a chromosome abnormality in a patient comprising staining target interphase chromosomal DNA with a high complexity nucleic acid probe, wherein the target interphase chromosomal DNA is stained by contacting interphase chromosomal DNA of the patient with a selected DNA probe which comprises a plurality of nucleotide segments complementary to the chromosomal DNA of interest, under conditions appropriate for hybridization of complementary DNA segments to occur, and further wherein the chromosomal DNA is present in a morphologically identifiable cell nucleus during the hybridization;
- and detecting hybridization between the interphase chromosomal DNA and the selected DNA probe, the occurrence of hybridization being indicative of the presence of a chromosomal abnormality.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
Specification