Related Experiment Videos
The ISWI ATPase Snf2h is required for early mouse development
Tomas Stopka1, Arthur I Skoultchi
1Department of Cell Biology, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA.
Summary
The Snf2h gene is essential for early embryonic development and hematopoietic stem cell proliferation. Loss of Snf2h causes embryonic lethality and inhibits erythropoiesis, highlighting its critical role in cell growth and differentiation.
Area of Science:
- Molecular Biology
- Developmental Biology
- Genetics
Background:
- Chromatin remodeling complexes, including the ISWI family, regulate DNA accessibility through ATP hydrolysis.
- Snf2h is a widely expressed ISWI ATPase involved in chromatin remodeling.
Purpose of the Study:
- To investigate the essential role of the Snf2h gene in mammalian embryonic development and adult hematopoietic stem cell function.
- To determine the consequences of Snf2h loss on early embryonic growth and differentiation.
Main Methods:
- Generation of Snf2h null mutant mice to study embryonic lethality.
- Blastocyst outgrowth experiments to assess cell viability and growth.
- Antisense inhibition of Snf2h in human hematopoietic progenitors to evaluate differentiation capacity.
Main Results:
- Snf2h-/- embryos exhibit embryonic lethality during the periimplantation stage.
- Loss of Snf2h leads to growth arrest and cell death in both trophectoderm and inner cell mass.
- Reduced Snf2h levels impair cytokine-induced erythropoiesis in CD34+ hematopoietic progenitors.
Conclusions:
- Snf2h is indispensable for the proliferation of early blastocyst-derived stem cells and adult hematopoietic progenitors.
- The absence of Snf2h prevents embryonic development beyond the periimplantation stage and inhibits hematopoietic differentiation.