Related Experiment Video
Updated: Sep 13, 2025
Cryopreservation of Zebrafish Spermatogonia by Whole Testes Needle Immersed Ultra-Rapid Cooling
Published on: March 4, 2018
Cryopreservation of spermatogonial stem cells: an overview of cryoprotectants
Fan Yang1, Jieyu Zhao2, Yaru Li3
1School of Medicine, Yangzhou University, Yangzhou, Jiangsu, China.; Affiliated Hospital of Yangzhou University, Yangzhou, Jiangsu, China.
Abstract:
Spermatogonial stem cells (SSC) are adult stem cells within the testis that play an essential role in spermatogenesis and are critical for male fertility. SSC are highly susceptible to cancer treatments such as chemotherapy and radiotherapy, resulting in impaired spermatogenesis, which ultimately leads to subfertility or male infertility. In adults, freezing of sperm represents a mature and reliable method for fertility preservation. Considering the absence of mature spermatogonia in the testes of prepubertal children, SSC cryopreservation and transplantation may be an ideal approach for fertility preservation in prepubertal boys. However, conventional freezing techniques cause damage to SSC, reducing cell survival and affecting self-renewal and differentiation, and thus imposing a challenge for regeneration of spermatogenesis after transplantation. This review summarizes the effects of multiple cryoprotectants in SSC cryopreservation, providing ideas for optimizing SSC freezing techniques and facilitating the application of SSC cryopreservation in fertility preservation in prepubertal boys with cancer.
Insights
Cryopreservation of spermatogonial stem cells (SSC) is vital for fertility preservation in prepubertal boys undergoing cancer treatment. Optimizing freezing techniques is crucial to improve SSC survival and regeneration potential.
Area of Science:
- Reproductive biology
- Stem cell science
- Oncology
Background:
- Spermatogonial stem cells (SSC) are essential for male fertility and spermatogenesis.
- Cancer treatments like chemotherapy and radiotherapy can impair SSC function, leading to infertility.
- Current fertility preservation methods are limited for prepubertal boys due to the absence of mature sperm.
Purpose of the Study:
- To review the impact of various cryoprotectants on SSC cryopreservation.
- To identify strategies for optimizing SSC freezing techniques.
- To enhance the application of SSC cryopreservation for fertility preservation in prepubertal boys.
Main Methods:
- Literature review of studies on SSC cryopreservation.
- Analysis of the effects of different cryoprotective agents on SSC viability and function.
- Evaluation of cryopreservation outcomes in relation to SSC self-renewal and differentiation.
Main Results:
- Conventional freezing methods can damage SSC, reducing their survival and regenerative capacity.
- Different cryoprotectants exhibit varying effects on SSC integrity and function post-thaw.
- Optimized cryopreservation protocols are needed to ensure successful SSC transplantation.
Conclusions:
- SSC cryopreservation offers a promising fertility preservation strategy for prepubertal boys.
- Further research into cryoprotectant efficacy is essential for improving SSC transplantation success.
- Optimized SSC freezing techniques can help restore spermatogenesis after cancer therapy.
