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CRISPR-Based Modular Assembly for High-Throughput Construction of a UAS-cDNA/ORF Plasmid Library
Published on: May 17, 2024
Construction and characterization of plasmid libraries enriched in sequences from single human chromosomes
C Collins1, W L Kuo, R Segraves
1Biomedical Sciences Division, Lawrence Livermore National Laboratory, Livermore, California 94550.
Genomics
|December 1, 1991
Summary
New plasmid libraries for all human chromosomes enable precise chromosome identification using fluorescence in situ hybridization (FISH). These tools facilitate genetic analysis, including translocation detection and aneuploidy assessment in both metaphase and interphase cells.
Area of Science:
- Genetics
- Molecular Biology
- Cytogenetics
Background:
- Construction of chromosome-specific DNA libraries is crucial for genetic mapping and diagnostics.
- Previous methods for generating such libraries had limitations in specificity and resolution.
Purpose of the Study:
- To develop and characterize plasmid libraries enriched for sequences from individual human chromosomes.
- To evaluate the utility of these libraries for various cytogenetic applications.
Main Methods:
- Transferring phage library inserts into Bluescribe plasmids.
- Cloning digested phage DNA into plasmid vectors.
- Employing fluorescence in situ hybridization (FISH) for library validation and application.
Main Results:
- Successfully constructed plasmid libraries for all human chromosomes with insert sizes up to 6 kb.
- FISH analysis confirmed chromosome-specific hybridization patterns, with some variations near centromeres.
- Libraries enable specific chromosome staining in metaphase spreads and signal detection in interphase nuclei for certain chromosomes.
Conclusions:
- The developed plasmid libraries are valuable tools for accurate human chromosome identification.
- These libraries support diverse cytogenetic analyses, including detection of chromosomal abnormalities and translocations.
