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Related Experiment Videos

The mouse alpha-globin locus regulatory element

G Gourdon1, J A Sharpe, D R Higgs

  • 1MRC Molecular Haematology Unit, University of Oxford, John Radcliffe Hospital, Oxford, UK.

Blood
|July 15, 1995
PubMed
Summary
This summary is machine-generated.

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Researchers identified a key mouse alpha globin regulatory element (m alpha RE) similar to the human HS-40. Functional tests in transgenic mice showed it partially regulates human alpha globin gene expression, suggesting additional elements are needed for full control.

Area of Science:

  • Genetics
  • Molecular Biology
  • Genomics

Background:

  • The alpha globin locus is crucial for oxygen transport.
  • Regulatory elements control gene expression.
  • Understanding conserved regulatory mechanisms across species is vital.

Purpose of the Study:

  • To identify and characterize the major alpha globin locus regulatory element in mice (m alpha RE).
  • To compare the mouse element (m alpha RE) with its human counterpart (HS-40).
  • To assess the functional equivalence of m alpha RE in regulating human alpha globin gene expression.

Main Methods:

  • Cloning of the mouse alpha globin locus regulatory element (m alpha RE).
  • Sequence homology analysis between m alpha RE and human HS-40.

Related Experiment Videos

  • Protein binding site analysis using footprinting and band shift assays.
  • Functional assessment in transgenic mice by linking m alpha RE to a human alpha globin gene.

    • Main Results:

    • m alpha RE shares high sequence homology with human HS-40 and is located similarly relative to an upstream gene.
    • Key protein binding sites in HS-40 are conserved in m alpha RE, though not all.
    • Transgenic mice expressing a human alpha globin gene linked to m alpha RE produced detectable human alpha mRNA.
    • Expression levels were lower than endogenous gene expression and lacked copy number dependence.

    Conclusions:

    • The identified mouse alpha globin regulatory element (m alpha RE) is functionally conserved with human HS-40.
    • m alpha RE plays a role in alpha globin gene regulation but may not be sufficient for complete control.
    • Additional regulatory sequences are likely required for full alpha globin gene regulation in both mice and humans.