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Investigation of SAMD1 ablation in mice
Bruce Campbell1, Lisa M Weber2, Sandra J Engle3,4
1Atherex Inc., Lincoln, MA, 01773, USA. bcampbell9516@gmail.com.
Scientific Reports
|February 22, 2023
Summary
SAM domain-containing protein 1 (SAMD1) is crucial for embryonic development. Its absence causes embryonic lethality, developmental defects, and impaired blood vessel formation in mice.
Area of Science:
- Developmental Biology
- Genetics
- Molecular Biology
Background:
- SAM domain-containing protein 1 (SAMD1) is linked to atherosclerosis and gene regulation.
- Its organismal-level function remains largely uncharacterized.
Purpose of the Study:
- To investigate the role of SAMD1 in mouse embryogenesis using knockout models.
Main Methods:
- Generation of SAMD1 knockout (SAMD1-/-) and heterozygous (SAMD1+/-) mice.
- Analysis of embryonic development, organogenesis, and neuronal differentiation in vitro.
Main Results:
- Homozygous SAMD1 loss resulted in embryonic lethality by E18.5, with severe organ degradation, absent functional blood vessels, and defective neuronal differentiation.
- Heterozygous SAMD1 knockout mice exhibited normal embryogenesis but showed reduced postnatal survival, potentially linked to altered steroidogenesis.
Conclusions:
- SAMD1 plays a critical role in mammalian embryonic development, impacting multiple organ systems and vascularization.
- SAMD1 is essential for proper blood vessel maturation and neuronal differentiation during embryogenesis.
