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Phylogenomic analysis by chromosome sorting and painting.
1Dipartimento di Biologia Animale e Genetica, Florence University, Firenze, Italy.
Methods in Molecular Biology (Clifton, N.J.)
|July 17, 2008
Summary
Flow cytometry enables chromosome sorting for genomic analysis and DNA library construction. This technique aids in understanding mammalian genome evolution through chromosome painting and comparative phylogenomics.
Area of Science:
- Genomics
- Molecular Biology
- Evolutionary Biology
Background:
- Chromosome sorting via flow cytometry is crucial for obtaining chromosome-specific DNA.
- This DNA is essential for techniques like chromosome painting, gene discovery, and array construction.
- Flow cytometry and chromosome painting are vital for studying mammalian genome evolution.
Purpose of the Study:
- To detail the methods for chromosome sorting and painting.
- To highlight their application in comparative genomics and evolutionary studies.
- To explain how these techniques reveal subchromosomal homology and breakpoints.
Main Methods:
- Preparation of single chromosome suspensions from cell cultures.
- Bivariate chromosome flow sorting.
- Chromosome paint preparation using degenerate oligonucleotide primed-PCR.
- Fluorescence in-situ hybridization (FISH) for probe detection.
Main Results:
- Successful isolation of chromosome-specific DNA.
- Generation of chromosome paints for various genomic applications.
- Demonstration of reciprocal painting across multiple species.
- Delineation of subchromosomal homology and chromosomal breakpoints.
Conclusions:
- Chromosome sorting and painting are powerful tools for genomic analysis.
- These methods significantly advance our understanding of mammalian genome evolution.
- Chromosomal rearrangements serve as valuable phylogenetic markers in speciation.
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