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Related Concept Videos

Polytene Chromosomes02:04

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Polytene chromosomes are giant interphase chromosomes with several DNA strands placed side by side. They were discovered in the year 1881 by Balbiani in salivary glands, intestine, muscles, malpighian tubules, and hypoderm of larvae Chironomus plumosus. Hence, these are also called "Salivary gland chromosomes." These are found in insects of the order Diptera and Collembola; in certain organs of mammals; and synergids, antipodes of flowering plants. Polytene chromosomes are also...
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In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
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Related Experiment Video

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2D and 3D Chromosome Painting in Malaria Mosquitoes
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Programmable Chromosome Painting with Oligopaints.

Son C Nguyen1, Eric F Joyce2

  • 1Department of Genetics, Penn Epigenetics Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.

Methods in Molecular Biology (Clifton, N.J.)
|August 14, 2019
PubMed
Summary

Oligopaints offer a low-cost, scalable method for chromosome painting, overcoming limitations of traditional fluorescence in situ hybridization (FISH). This technology enables precise fluorescent labeling of genomic features across species.

Keywords:
Chromosome paintingFISHOligonucleotideOligopaint

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Area of Science:

  • Genomics
  • Molecular Biology
  • Biotechnology

Background:

  • Traditional chromosome painting using fluorescence in situ hybridization (FISH) is expensive, slow, and complex.
  • Existing FISH probe generation methods lack flexibility and scalability for comprehensive genomic analysis.

Purpose of the Study:

  • To develop a cost-effective, scalable, and customizable method for chromosome painting.
  • To outline a protocol for utilizing Oligopaint technology for whole chromosome fluorescent labeling.

Main Methods:

  • Oligopaints are computationally designed DNA probes synthesized on microarrays.
  • Probes are amplified using polymerase chain reaction (PCR) for targeted genomic labeling.
  • The method was applied to generate chromosome paints for Drosophila, mouse, and human.

Main Results:

  • Oligopaint libraries provide precise control over targeted sequences, from kilobases to whole chromosomes.
  • Generated Oligopaint libraries are low-cost, renewable, and customizable for various genomic features.
  • The method is compatible with sequential FISH for whole-genome labeling in a single step.

Conclusions:

  • Oligopaint technology presents a flexible and scalable alternative to conventional FISH for chromosome painting.
  • This approach facilitates efficient and precise fluorescent labeling of entire genomes across different species.
  • The outlined protocol enables widespread adoption of Oligopaints for advanced cytogenetic applications.