A Simple Method for Transportation of Mouse Embryos Using Microtubes and a Warm Box

Area of Science:

• Reproductive biology
• Developmental biology
• Biotechnology

Background:

• Transporting preimplantation embryos typically requires expensive, specialized incubators to maintain optimal culture conditions.
• Previous methods for embryo transport were unsuitable for long-distance shipping of live embryos.

Purpose of the Study:

• To develop a simple, low-cost embryo transportation system for preimplantation embryos.
• To assess the viability and developmental potential of mouse embryos transported using the novel system.

Main Methods:

• Embryo culture was performed in washed microtubes attached to gas-permeable film, replacing traditional plastic dishes.
• A portable, battery-powered warm box was designed to maintain optimal temperature during transport.
• Mouse embryos were transported via parcel delivery for 3 days, followed by embryo transfer to recipient mice.

Main Results:

• Over 90% of embryos developed to the blastocyst stage in microtubes, comparable to dish cultures.
• Transported embryos resulted in blastocyst quality and full-term development rates similar to controls.
• Healthy offspring were obtained after transporting embryos from multiple mouse strains, demonstrating system efficacy.

Conclusions:

• A simple, cost-effective method for transporting preimplantation mouse embryos has been developed.
• This system, utilizing microtubes and a portable warm box, is suitable for long-distance embryo transport.
• The findings suggest potential applications in reproductive medicine for improved embryo shipping.