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Transgenic mice expressing constitutive active MAPKAPK5 display gender-dependent differences in exploration and
Nancy Gerits1, Werner Van Belle, Ugo Moens
1Department of Microbiology and Virology, Institute of Medical Biology, Faculty of Medicine, University of Tromsø, N-9037 Tromsø, Norway. nancy@sigtrans.org.
Behavioral and Brain Functions : BBF
|November 14, 2007
Summary
This study created a new mouse model to investigate MAPKAPK5, a protein kinase. Female mice showed reduced anxiety behaviors, while males had increased activity.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Mitogen-activated protein kinases (MAPKs) are crucial signaling pathways regulating cell proliferation, differentiation, motility, and neurological functions like memory.
- MAPK-Activated Protein Kinase 5 (MAPKAPK5) function is largely unknown, necessitating further investigation.
- A novel knockin mouse model with a constitutively active MAPKAPK5 variant was developed to study its effects.
Purpose of the Study:
- To investigate the behavioral consequences of expressing a constitutively active MAPKAPK5 variant in mice.
- To analyze anxiety-related behaviors and locomotor activity in the generated transgenic mouse model.
Main Methods:
- Generation of a knockin mouse model expressing a constitutively active MAPKAPK5 variant.
- Behavioral assessment using SHIRPA observations, elevated plus maze, and light-dark test.
- Statistical analysis employing Chi-square tests and t-tests.
Main Results:
- Female transgenic mice exhibited increased head dips and spent more time in the open arms of the elevated plus maze, indicating reduced anxiety.
- Female transgenic mice explored the open arms more and showed decreased activity in closed arms.
- Male transgenic mice did not show altered anxiety but displayed increased locomotor activity compared to controls.
Conclusions:
- The study successfully generated a MAPKAPK5 knockin mouse model.
- Constitutively active MAPKAPK5 expression led to sex-specific behavioral changes, including anxiety-related traits in females and altered locomotor activity in males.
