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Updated: Jul 15, 2026
A Seminiferous Tubule Squash Technique for the Cytological Analysis of Spermatogenesis Using the Mouse Model
Published on: February 6, 2018
Correlation of appearance of metastasis-associated protein1 (Mta1) with spermatogenesis in developing mouse testis
Wei Li1, Jinshan Zhang, Xinping Liu
1Department of Histology and Embryology, The Fourth Military Medical University, Xi'an, 710032, People's Republic of China.
Abstract:
Mta1, a representative of the MTA gene family, is believed to be involved in the metastasis of malignant tumors. However, a systematic study of its physiological function has not been performed. It has been found in normal mouse organs at relatively low levels, except for in testis, suggesting a potential function in the male reproductive system. In order to explore the role of Mta1 protein during spermatogenesis, its expression in adult mouse testis was compared with that in developing mouse testis and in testis from adult mice treated with methoxyacetic acid, which selectively depletes primary spermatocytes. Quantitative analysis revealed that Mta1 protein gradually increased in the testis from 14 days postnatally. Immunolocalization analysis demonstrated strong signals in the seminiferous tubules, and Mta1 was predominantly present in the nucleus of primary spermatocytes and spermatogonia from 14 days postnatally. The most intensive staining was located in the nucleus of pachytene spermatocytes in mature testes. The expression pattern of Mta1 during spermatogenesis was also shown to be stage-specific by immunohistochemistry analysis. Finally, dramatic loss of Mta1 expression from pachytene spermatocytes was observed in the spermatogenic-arrested adult mouse testis. These results collectively demonstrate that Mta1 appears during postnatal testis development and suggest that this expression may be crucial for spermatogenesis.
Insights
Mta1 protein expression increases during male reproductive system development and is crucial for spermatogenesis. Its absence in pachytene spermatocytes indicates a role in male fertility.
Area of Science:
- Reproductive Biology
- Molecular Biology
- Oncology
Background:
- Mta1 protein, part of the MTA gene family, is linked to malignant tumor metastasis.
- Its physiological functions are not fully understood, but it's highly expressed in mouse testes.
- This suggests a potential role in the male reproductive system.
Purpose of the Study:
- To investigate the role and expression pattern of Mta1 protein during spermatogenesis in mice.
- To determine if Mta1 expression is linked to male reproductive health.
Main Methods:
- Quantitative analysis of Mta1 protein levels in developing and adult mouse testes.
- Immunolocalization and immunohistochemistry to determine Mta1's cellular and subcellular location and stage-specific expression.
- Analysis of Mta1 expression in testes with induced spermatogenic arrest.
Main Results:
- Mta1 protein levels increase significantly in mouse testes from 14 days postnatally.
- Mta1 is predominantly found in the nucleus of spermatogonia and primary spermatocytes, peaking in pachytene spermatocytes.
- Mta1 expression is stage-specific during spermatogenesis and is dramatically reduced in spermatogenic-arrested testes.
Conclusions:
- Mta1 protein expression is developmentally regulated during postnatal testis development.
- Mta1 expression is crucial for successful spermatogenesis in mice.
- Mta1 may play a significant role in male fertility and reproductive function.
