Spermatogonial stem cells: questions, models and perspectives

This review looks into the phylogeny of spermatogonial stem cells and describes their basic biological features. We are focusing on species-specific differences of spermatogonial stem cell physiology. We propose revised models for the clonal expansion of spermatogonia and for the potential existence...

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Bibliographic Details
Published in:Human reproduction update 2006-05, Vol.12 (3), p.275-282
Main Authors: Ehmcke, Jens, Wistuba, Joachim, Schlatt, Stefan
Format: Article
Language:English
Subjects:
Animals
Biological Evolution
Clone Cells - classification
Clone Cells - cytology
Clone Cells - physiology
germ cell transplantation
Humans
Male
Models, Biological
phylogeny
Pluripotent Stem Cells - classification
Pluripotent Stem Cells - cytology
Pluripotent Stem Cells - physiology
Primates
Rats
species-specific differences
Spermatogonia - classification
Spermatogonia - cytology
Spermatogonia - physiology
spermatogonial stem cells
Stem Cell Transplantation
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Summary:This review looks into the phylogeny of spermatogonial stem cells and describes their basic biological features. We are focusing on species-specific differences of spermatogonial stem cell physiology. We propose revised models for the clonal expansion of spermatogonia and for the potential existence of true stem cells and progenitors in primates but not in rodents. We create a new model for the species-specific arrangements of spermatogenic stages which may depend on the variable clonal expansion patterns. We also provide a brief overview of germ cell transplantation as a powerful tool for basic research and its potential use in a clinical setting.
ISSN:1355-4786
1460-2369
DOI:10.1093/humupd/dmk001