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Related Experiment Videos

Engineering EGFP reporter constructs into a 200 kb human beta-globin BAC clone using GET Recombination.

M Orford1, M Nefedov, J Vadolas

  • 1CAGT Research Group, The Murdoch Children's Research Institute, Royal Children's Hospital, Flemington Road, Parkville, Melbourne, Victoria 3052, Australia.

Nucleic Acids Research
|September 13, 2000
PubMed
Summary

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GET Recombination efficiently generated large deletions in BAC clones for globin gene reporter constructs. This method facilitates functional studies and the search for novel therapeutic agents targeting globin gene expression.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • The beta-globin gene cluster is crucial for erythropoiesis and is implicated in various genetic disorders.
  • Developing precise tools for manipulating large genomic regions within bacterial artificial chromosomes (BACs) is essential for functional studies.

Purpose of the Study:

  • To demonstrate the utility of GET Recombination for generating targeted large deletions and reporter constructs within a 200 kb BAC clone containing human globin genes.
  • To create reporter constructs for studying the expression of various human globin genes, including beta-, delta-, (A)gamma-, (G)gamma-, and epsilon-globin.

Main Methods:

  • Utilized GET Recombination, an inducible homologous recombination system in Escherichia coli, to insert an enhanced green fluorescent protein (EGFP) cassette into specific locations within a 200 kb BAC clone.

Related Experiment Videos

  • Generated reporter constructs by targeting EGFP insertion between globin genes, leading to simultaneous deletions of large intervening sequences (8.8 kb to 44 kb).
  • Validated construct functionality through transient transfection of MEL cells to confirm EGFP expression.

    • Main Results:

    • Successfully generated multiple globin reporter constructs with high efficiency, including deletions of significant genomic regions.
    • Demonstrated successful EGFP expression from beta- and delta-globin reporter constructs after transient transfection.
    • Showcased the ability to create reporter constructs for (A)gamma- and (G)gamma-globin genes with specific large deletions.

    Conclusions:

    • GET Recombination is a highly efficient tool for generating large deletions and complex reporter constructs in BACs for functional genomics.
    • The developed globin reporter constructs are valuable for investigating globin gene regulation and for screening therapeutic agents.
    • Establishing stable erythropoietic cell lines with these constructs will advance the search for treatments for globin gene-related disorders.