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Updated: Mar 17, 2026
Mouse Sperm Cryopreservation and Recovery using the I·Cryo Kit
Published on: December 12, 2011
Cryorecovery of Mouse Sperm by Different IVF Methods Using MBCD and GSH
Ming-Wen Li1, Olivia C Glass1, Jasmin Zarrabi1
1Mouse Biology Program, University of California, Davis, CA 95618, United States.
Abstract:
Different protocols incorporating methyl-β-cyclodextrin (MBCD) and reduced glutathione (GSH) have been reported to improve IVF recovery of cryopreserved mouse sperm on a C57BL/6 (J and N) genetic background. However, it is not clear which IVF protocol is most appropriate when using the various methods to cryorecover sperm with different sperm quality and sample volumes. Therefore, in the present study we correlated sperm motility with fertilization rate and compared the efficiency of different IVF methods using various sperm samples so as to establish general guidelines for mouse sperm cryorecovery by IVF. High linear correlation between sperm fertilization rate and progressive motility was found, R2 was 0.9623 and 0.9993 for pre-freezing and post-thaw progressive motility, respectively. High amounts of cryoprotective agent (CPA) were observed to impair both sperm capacitation and fertilization. Moreover, the presence of a large number of immotile sperm in the sperm-oocyte co-incubation drop was found to reduce IVF success which could be partially reversed by supplementation using monothioglycerol (MTG) during centrifugation. It was concluded that the efficiency of IVF using cryorecovered mouse sperm in media containing MBCD and GSH can be predicted from sperm progressive motility. High concentrations of CPA and immotile sperm should be mitigated prior to IVF. The optimum IVF method should be selected based on sperm sample volume and sperm parameters.
Insights
Predicting IVF success in cryopreserved mouse sperm is possible using progressive motility. Optimizing protocols involves managing cryoprotective agent concentrations and reducing immotile sperm for better fertilization rates.
Area of Science:
- Reproductive Biology
- Cryopreservation Science
- In Vitro Fertilization
Background:
- Methyl-β-cyclodextrin (MBCD) and reduced glutathione (GSH) protocols improve IVF recovery of cryopreserved mouse sperm.
- Optimal IVF protocols for cryopreserved mouse sperm vary with sperm quality and sample volume.
Purpose of the Study:
- Correlate sperm motility with fertilization rate in cryopreserved mouse sperm.
- Compare the efficiency of different IVF methods for mouse sperm cryorecovery.
- Establish general guidelines for mouse sperm cryorecovery via IVF.
Main Methods:
- Correlation analysis between sperm motility and fertilization rates.
- Comparison of various IVF protocols using different sperm samples.
- Assessment of cryoprotective agent (CPA) concentration effects.
Main Results:
- High linear correlation found between sperm fertilization rate and progressive motility (R²=0.9623 pre-freezing, R²=0.9993 post-thaw).
- High CPA concentrations negatively impact sperm capacitation and fertilization.
- Monothioglycerol (MTG) partially reversed reduced IVF success caused by immotile sperm.
Conclusions:
- IVF efficiency with cryopreserved mouse sperm can be predicted by progressive motility.
- Mitigating high CPA concentrations and immotile sperm is crucial before IVF.
- Selecting the optimal IVF method depends on sperm sample volume and parameters.
