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Dominant interfering alleles define a role for c-Myb in T-cell development
P Badiani1, P Corbella, D Kioussis
1Institute of Cancer Research, Chester Beatty Laboratories, London, UK.
Genes & Development
|April 1, 1994
Summary
The transcription activator c-Myb regulates T-cell differentiation. Inhibiting c-Myb in T cells partially blocked thymopoiesis and T-cell proliferation, revealing its crucial role in T-cell development.
Area of Science:
- Immunology
- Molecular Biology
- Developmental Biology
Background:
- The transcription activator c-Myb is highly expressed in immature thymocytes and during T-cell activation.
- c-Myb is a potential regulator of T-cell differentiation and development.
Purpose of the Study:
- To investigate the role of c-Myb in T-cell development.
- To generate and analyze transgenic mice expressing dominant interfering Myb alleles in T cells.
Main Methods:
- Generation of transgenic mice expressing two dominant interfering Myb alleles in T cells.
- Analysis of thymopoiesis and T-cell proliferation in the generated mouse models.
Main Results:
- Both dominant interfering Myb alleles partially blocked thymopoiesis.
- Both alleles inhibited the proliferation of mature T cells.
- A Myb-Engrailed (Myb-En) chimera demonstrated more efficient repression.
Conclusions:
- c-Myb plays a significant role in T-cell development, including thymopoiesis and T-cell proliferation.
- Dominant interfering Myb alleles can be used to study c-Myb function.
- The Myb-En chimera serves as a model for developing other dominant interfering transcription factor alleles.