Vitrification of isolated human blastomeres

Area of Science:

• Reproductive biology
• Cryobiology
• Embryology

Background:

• Blastomere cryopreservation is crucial for assisted reproductive technologies.
• Existing methods face challenges in blastomere survival and developmental potential.

Purpose of the Study:

• To present a new methodology for preserving and banking isolated human blastomeres.
• To evaluate the survival and developmental rates of blastomeres cryopreserved using this novel technique.

Main Methods:

• A new technique involving packing isolated human blastomeres into an emptied zona pellucida.
• Vitrification of the prepared blastomeres.
• Warming and assessment of blastomere survival and development.

Main Results:

• High post-warming survival rate of 75.7% for cryopreserved blastomeres.
• Developmental rates comparable to non-cryopreserved blastomeres: 62.5% cleavage, 26.6% compaction, and 20.3% cavitation.
• Demonstrated feasibility of the zona pellucida packing method for blastomere cryopreservation.

Conclusions:

• The novel zona pellucida packing method offers a promising approach for human blastomere cryopreservation.
• This technique supports high blastomere survival and developmental potential, beneficial for fertility preservation and research.