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SLUG (SNAI2) overexpression in embryonic development
P A Pérez-Mancera1, I González-Herrero, K Maclean
1Laboratorio 13, Instituto de Biología Molecular y Celular del Cáncer, CSIC/Universidad de Salamanca, Salamanca, Spain.
Cytogenetic and Genome Research
|May 24, 2006
Summary
SLUG (SNAI2) gene duplication in a child was linked to developmental issues. Slug overexpression in mice caused adult heart problems and tumors, suggesting a role in cardiac disease and cancer.
Area of Science:
- Developmental Biology
- Molecular Genetics
- Cancer Research
Background:
- The SLUG (SNAI2) gene is crucial for neural crest development, and its loss-of-function mutations cause piebaldism and Waardenburg syndrome.
- The effects of SLUG overexpression during embryonic development are largely unknown.
Observation:
- A child with a de novo 8q11.2-->q13.3 duplication exhibited SLUG duplication, associated with tetralogy of Fallot, cleft palate, renal anomalies, hypotonia, and developmental delay.
- Mice with a Slug transgene were morphologically normal at birth, indicating Slug overexpression alone does not cause overt birth defects.
Findings:
- Adult mice with Slug overexpression showed a 20% incidence of sudden death, cardiomegaly, and cardiac failure.
- These mice also developed incipient mesenchymal tumors, suggesting a link between Slug overexpression and cancer development.
Implications:
- While not directly implicating SLUG in congenital heart disease, overexpression may contribute to specific cardiac phenotypes.
- SLUG overexpression might play a role in the development of certain cancers, particularly mesenchymal tumors.