Strain difference in establishment of mouse embryonic stem (ES) cell lines

Area of Science:

• Developmental Biology
• Genetics
• Stem Cell Biology

Background:

• Mouse embryonic stem (ES) cells are crucial for genetic manipulation.
• Current ES cell lines are predominantly derived from the 129/Sv strain.
• There is a need for ES cell lines from diverse inbred and mutant mouse strains.

Purpose of the Study:

• To establish efficient methods for deriving ES cell lines from various mouse strains.
• To characterize the properties of newly established ES cell lines.
• To assess the potential of these ES cell lines for genetic applications.

Main Methods:

• Utilized fibroblast cell line SL10 as feeder cells.
• Supplemented culture medium with 5,000 unit/ml LIF.
• Adapted ES cell culture and establishment procedures for different mouse strains.

Main Results:

• Successfully established ES cell lines from C57BL/6, BALB/c, BXSB/MpJ-Yaa, and MRL/Mp-lpr/lpr strains.
• Demonstrated strain-specific differences in ES cell establishment and culture.
• Confirmed normal karyotype and chimera production in most derived cell lines.
• Showcased germ-line contribution from several C57BL/6 ES cell lines.

Conclusions:

• ES cell lines can be generated from a variety of mouse strains.
• Strain-specific modifications are necessary for efficient ES cell derivation.
• The established ES cell lines possess functional characteristics for genetic studies and applications.