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Updated: Jul 14, 2026
Mouse Sperm Cryopreservation and Recovery using the I·Cryo Kit
Published on: December 12, 2011
Cryosurvival and spermatogenesis after allografting prepubertal mouse tissue: comparison of two cryopreservation
Ellen Goossens1, Veerle Frederickx, Mieke Geens
1Center for Reproductive Medicine and Research Laboratories for Reproductive Medicine, University Hospital and Medical School, Dutch-Speaking Brussels Free University (Vrije Universiteit Brussel), Brussels, Belgium. ellen.goossens@uzbrussel.be
Abstract:
Although childhood cancer treatments are yielding higher survival rates, sterility remains one of the major side effects. For prepubertal boys there are currently no options to preserve fertility. Testicular tissue banking together with subsequent grafting may become a possible strategy in the future. In the present study, we compared two cryopreservation protocols using prepubertal murine testicular tissue. Fresh and cryopreserved testicular tissue was grafted subcutaneously on the back of immune-deficient mice for at least 3 months. Prepubertal murine tissue recovered well after cryopreservation with both ethylene glycol (EG) and dimethylsulfoxide (DMSO). While in fresh murine allografts, spermatozoa were observed in 23% of the tubules; in both the DMSO and the EG groups, 32% of the seminiferous tubules contained spermatozoa. However, with DMSO the structure of the seminiferous tubules was better preserved.
Insights
Cryopreservation of prepubertal testicular tissue using ethylene glycol (EG) or dimethylsulfoxide (DMSO) shows promise for future fertility preservation. Both methods successfully preserved sperm, with DMSO offering better structural integrity of seminiferous tubules.
Area of Science:
- Reproductive biology
- Oncology
- Cryobiology
Background:
- Childhood cancer survival rates are increasing, but sterility is a significant long-term side effect.
- Current fertility preservation options are limited for prepubertal boys.
- Testicular tissue banking and grafting represent a potential future fertility preservation strategy.
Purpose of the Study:
- To compare the efficacy of two cryopreservation protocols (ethylene glycol and dimethylsulfoxide) for prepubertal murine testicular tissue.
- To evaluate the viability and structural integrity of cryopreserved testicular tissue after grafting.
Main Methods:
- Comparison of two cryoprotective agents: ethylene glycol (EG) and dimethylsulfoxide (DMSO).
- Subcutaneous grafting of fresh and cryopreserved prepubertal murine testicular tissue onto immune-deficient mice.
- Assessment of tissue recovery and sperm presence in seminiferous tubules after at least 3 months post-grafting.
Main Results:
- Both EG and DMSO protocols supported tissue recovery after cryopreservation and grafting.
- Spermatozoa were observed in 32% of seminiferous tubules in both cryopreservation groups, an increase from 23% in fresh allografts.
- Dimethylsulfoxide (DMSO) resulted in superior preservation of seminiferous tubule structure compared to EG.
Conclusions:
- Cryopreservation of prepubertal testicular tissue is feasible using both EG and DMSO.
- Both cryoprotectants enable successful sperm recovery post-grafting.
- DMSO is recommended for its better preservation of testicular tissue architecture.
