The FunGenES consortium: functional genomics in engineered embryonic stem cells

Area of Science:

• Developmental Biology
• Genomics
• Stem Cell Biology

Background:

• The complete mammalian genome sequence is known, but selective gene usage during cell differentiation remains poorly understood.
• Key questions involve identifying gene subsets defining pluripotency, differentiation states, and lineage commitment regulation.

Purpose of the Study:

• To map gene subsets involved in pluripotent, lineage-committed, and differentiated cell types.
• To create an atlas of the mammalian genome in early and late developmental processes.
• To understand the regulation of transitions between developmental states (lineage commitment).

Main Methods:

• Utilized gene expression profiling and functional screens.
• Employed mouse embryonic stem (ES) cells as an in vitro developmental model.
• Differentiated ES cells through ectoderm, mesoderm, and endoderm pathways.

Main Results:

• Initiated the creation of a comprehensive atlas of mammalian genome participation in development.
• Established mouse ES cells as a model for studying pluripotency and differentiation pathways.
• Demonstrated the feasibility of genetic engineering in mouse ES cells for functional screens.

Conclusions:

• Mapping gene subsets is crucial for understanding cell fate determination and developmental transitions.
• Mouse ES cells provide a valuable model for studying mammalian development and gene regulation.
• Findings may translate to human ES cells, advancing stem cell-based therapies.