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Development of hydrocephalus in mice lacking SOCS7
Danielle L Krebs1, Donald Metcalf, Tobias D Merson
1The Walter and Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, Victoria 3050, Australia.
Summary
Suppressor of cytokine signaling 7 (SOCS7) protein is crucial for brain development. Gene targeting revealed that Socs7 knockout mice develop hydrocephalus and exhibit reduced size, highlighting SOCS7
Area of Science:
- Molecular Biology
- Genetics
- Neuroscience
Background:
- The suppressor of cytokine signaling (SOCS) family, including SOCS1-SOCS7 and CIS, plays a role in cytokine and growth factor signaling termination.
- The specific biological functions of SOCS7 remain less understood compared to other SOCS family members.
Purpose of the Study:
- To elucidate the physiological role of SOCS7 by generating and analyzing mice lacking the Socs7 gene.
Main Methods:
- Gene targeting was employed to create Socs7 knockout (Socs7-/-) mice.
- Phenotypic analysis included assessment of growth, fertility, hematopoiesis, glucose/insulin levels, and survival.
- In situ hybridization was used to determine Socs7 expression patterns, particularly in the brain.
Main Results:
- Socs7-/- mice exhibited reduced body size (7-10% smaller than wild-type).
- Approximately 50% of Socs7-/- mice died by 15 weeks of age due to hydrocephalus, characterized by cranial distortion and ventricular dilation.
- Prominent Socs7 expression was observed in the brain, suggesting a critical function in this organ.
Conclusions:
- SOCS7 is essential for normal brain development and survival, as evidenced by hydrocephalus in Socs7 knockout mice.
- The findings suggest a significant role for SOCS7 in the central nervous system.
