Monkey embryonic stem cell lines expressing green fluorescent protein

Area of Science:

• Stem Cell Biology
• Developmental Biology
• Genetics

Background:

• Nonhuman primate (NHP) embryonic stem (ES) cell research faces challenges in genetic modification and understanding differentiation.
• Monitoring genetically modified cells noninvasively is crucial for studying early development and cell transplantation.

Purpose of the Study:

• To establish transgenic NHP-ES cell lines that express green fluorescent protein (GFP) without compromising pluripotency.
• To validate the utility of these GFP-expressing NHP-ES cells for studying differentiation and in cell transplantation models.

Main Methods:

• Generation of transgenic NHP-ES cell lines expressing GFP.
• In vitro differentiation assays (embryoid bodies, neural cells, cardiac myocytes).
• In vivo differentiation assessment via teratoma formation in SCID mice.
• Chimeric blastocyst formation studies.

Main Results:

• Established stable transgenic NHP-ES cell lines expressing GFP.
• Confirmed pluripotency and differentiation capacity into multiple cell types (neural, cardiac).
• Demonstrated teratoma formation from all three embryonic germ layers in vivo.
• Confirmed sustained GFP expression in differentiated cells and successful chimeric blastocyst formation.

Conclusions:

• Transgenic NHP-ES cells expressing GFP are a valuable tool for studying early development and cell differentiation.
• These cells maintain pluripotency and differentiation potential, suitable for cell transplantation research.
• The established cell lines facilitate noninvasive monitoring of cell behavior in developmental and therapeutic contexts.