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Germ Cell Transplantation and Testis Tissue Xenografting in Mice
Published on: February 6, 2012
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Spermatogonial stem cell transplantation into nonablated mouse recipient testes
Hiroko Morimoto1, Narumi Ogonuki2, Mito Kanatsu-Shinohara3
1Department of Molecular Genetics, Graduate School of Medicine, Kyoto University, Yoshida Konoe, Sakyo-ku, Kyoto 606-8501, Japan.
Stem Cell Reports
|June 18, 2021
Summary
Spermatogonial stem cell (SSC) transplantation efficiency is improved by using nonablated recipient testes. This method enhances donor cell colonization and can restore normal spermatogenesis, offering a new strategy for male infertility.
Area of Science:
- Reproductive biology
- Stem cell biology
- Male infertility research
Background:
- Spermatogonial transplantation is a key assay for spermatogonial stem cells (SSCs).
- SSCs migrate through the blood-testis barrier (BTB) to colonize seminiferous tubule niches.
- Current methods often require complete destruction of endogenous spermatogenesis.
Purpose of the Study:
- To investigate the impact of recipient conditioning on SSC homing and colonization.
- To explore alternative strategies for improving SSC transplantation success.
- To assess the potential for restoring spermatogenesis in infertile models.
Main Methods:
- Examined SSC homing in nonablated versus ablated recipient testes.
- Analyzed glial cell line-derived neurotrophic factor expression following germ cell ablation.
- Performed SSC transplantation into seminiferous tubules of wild-type and Cldn11-deficient mice.
- Evaluated donor cell colonization and spermatogenesis restoration.
Main Results:
- Germ cell ablation reduced glial cell line-derived neurotrophic factor expression, suggesting reduced niche attraction.
- SSCs successfully colonized nonablated testes.
- In Cldn11-deficient mice lacking a BTB, SSC transplantation enhanced donor colonization and restored spermatogenesis.
- Transplantation into nonablated testes improved SSC homing and colonization.
Conclusions:
- Recipient conditioning significantly impacts SSC homing efficiency.
- Nonablated niches may be more conducive to SSC colonization.
- SSC transplantation, particularly in models with compromised BTB function, shows promise for restoring male fertility.
- This study presents a novel transplantation strategy to overcome male infertility.
