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Methods of cryopreservation of testicular tissue with viable spermatogonia in pre-pubertal boys undergoing gonadotoxic cancer treatment

Keros, Victoria, Hultenby, Kjell, Borgström, Birgit, Fridström, Margareta, Jahnukainen, Kirsi, Hovatta, Outi·2007·Human Reproduction

Abstract

BACKGROUND: Banking of testicular tissue from pre-pubertal boys before gonadotoxic treatment is a crucial step in fertility preservation. We wanted to find optimal methods for cryopreservation of testicular tissue from pre-pubertal boys, modifying techniques developed for fetal and adult human testicular tissue cryopreservation. METHODS: Testicular tissue was collected from five pre-pubertal boys undergoing gonadotoxic treatment in a clinical programme. Two freezing protocols, originally developed for fetal and adult human testicular tissue, were applied for pre-pubertal testicular tissue cryopreservation. In both methods, 5% dimethyl sulphoxide (DMSO) was used as a cryoprotectant. The integrity of the tissue was investigated in non-frozen tissue cultured for 24 h and in cryopreserved-thawed tissue, using two different programmes. We also analysed frozen-thawed samples cultured for 24 h in comparison with untreated fresh fixed control tissue. Immunohistochemical analysis using anti-MAGE-A4, vimentin and CD34 monoclonal antibodies was performed in order to visualize and characterize the cryodamage of the different testicular cells and compartments. The structure of the tissue was evaluated using light microscopy. Qualitative control analysis was performed using transmission electron microscopy. RESULTS: No clear structural changes were observed in the fresh, fresh cultured and cryopreserved testicular tissue after using the protocol developed for adult testicular tissue. The programme earlier successfully used for human fetal testicular tissue cryopreservation caused more tissue damage. CONCLUSIONS: Pre-pubertal testicular tissue from boys facing gonadotoxic treatment survives cryopreservation, can be cryobanked and hopefully used for fertility preservation. Slow programmed freezing with DMSO as a cryoprotectant is efficient in maintaining the spermatogonia, Sertoli cells and stromal compartment during freezing, thawing and tissue culture.

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Metadata

Authors
Keros, V., Hultenby, K., Borgström, B., Fridström, M., Jahnukainen, K., & Hovatta, O.
Venue
Human Reproduction
Published
2007-01-26
Volume
22
Issue
5
Pages
1384-1395
ISSN
  • 0268-1161 (ISSN-L)
  • 1460-2350
OpenAlex
W2101671328
Cited by
335
References
0
FWCI
15.05
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Methods of cryopreservation of testicular tissue with viable spermatogonia in pre-pubertal boys undergoing gonadotoxic cancer treatment. https://app.cochat.ai/papers/10.1093/humrep/del508
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Keros, V., Hultenby, K., Borgström, B., Fridström, M., Jahnukainen, K., & Hovatta, O. (2007). Methods of cryopreservation of testicular tissue with viable spermatogonia in pre-pubertal boys undergoing gonadotoxic cancer treatment. Human Reproduction. https://doi.org/10.1093/humrep/del508

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