ArticleThe Journal of reproduction and development2025
A simplified protocol for vitrification of hamster embryos.
Article in The Journal of reproduction and development, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Golden hamsters (Mesocricetus auratus) have been extensively used in biomedical research. With the advent of genome-editing technology, it is now possible to generate gene-knockout hamsters, providing unique research models that cannot be achieved with mice or rats. Therefore, the development of cryopreservation techniques for hamster embryos is in high demand. In this study, we present a simplified vitrification protocol for hamster embryo preservation. In vivo-derived 8-cell or morula embryos (Day 3) were vitrified using Cryotop in modified HECM-3 medium containing ethylene glycol, DMSO, and sucrose. After warming, the embryos were transferred into the uteri of Day 3-pregnant females with a different coat color. The results showed that 21-26% of the transferred embryos developed to the term. The experiments were conducted in a conventional laboratory setting, avoiding direct light exposure. Given the reproducibility of our vitrification protocol, it has broad applicability in laboratories that use hamsters.
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