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Life and death in the JUNgle
1Unité des Virus Oncogènes, Pasteur Institute, 25 Rue du Dr Roux, Paris, France. jonny@pasteur.fr
Trends in Molecular Medicine
|April 5, 2001
Abstract:
Experiments with transgenic and knockout mice have begun to elucidate distinct roles for the three members of the Jun family of transcription factors. Mice with tissue-specific loss of JunB develop a myeloproliferative disorder, emphasizing the important roles that Jun proteins play in regulating life and death decisions in disease.
Insights
Jun proteins regulate cell fate decisions. Loss of JunB in mice causes a myeloproliferative disorder, highlighting Jun proteins essential roles in disease.
Area of Science:
- Molecular biology
- Genetics
- Immunology
Background:
- The Jun family of transcription factors (JunA, JunB, c-Jun) are critical regulators of cellular processes.
- Dysregulation of Jun proteins is implicated in various diseases, including cancer and inflammatory conditions.
Purpose of the Study:
- To investigate the distinct roles of individual Jun family members in vivo.
- To understand the contribution of Jun proteins to the regulation of cell survival and proliferation.
Main Methods:
- Utilizing genetically engineered mouse models, including transgenic and knockout mice.
- Employing tissue-specific gene deletion strategies to study JunB function.
Main Results:
- Mice with targeted deletion of JunB exhibited a myeloproliferative disorder.
- This finding underscores the critical role of JunB in controlling hematopoietic cell homeostasis.
Conclusions:
- JunB is essential for preventing the development of myeloproliferative disorders.
- Jun proteins play crucial roles in governing cell life and death decisions, with implications for disease pathogenesis.
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