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Stage-specific expression of three cell surface carbohydrate antigens during murine spermatogenesis detected with monoclonal antibodies
- Source :
- Developmental biology. 103(1)
- Publication Year :
- 1984
-
Abstract
- We have identified three germ cell surface carbohydrate antigens that exhibit a common, stage-specific pattern of expression during spermatogenesis in the mouse. IgM-class monoclonal antibodies designated "J1," "C6," and "A5" were absorbed by adult testis, but not by any adult somatic tissue tested. In indirect immunofluorescence assays using collagenase-dissociated prepuberal and adult testicular cells, these antibodies labeled the surfaces of early and late pachytene spermatocytes and round spermatids. Gonocytes from fetal and neonatal testes were not labeled. In paraffin sections of prepuberal and adult testes, sialidase treatment exposed antigens recognized by antibodies C6 and A5 on preleptotene, leptotene, and zygotene spermatocytes located near the perimeter of seminiferous tubules. The determinants recognized by antibodies J1, C6, and A5 were characterized partially using a sugar hapten inhibition assay. The binding of J1 to adult testicular cells was inhibited specifically by N-acetylglucosamine and the binding of both C6 and A5 was inhibited by N-acetyllactosamine. The glycoconjugates recognized by J1, C6, and A5 eluted from gel filtration columns with an apparent molecular weight greater than 1 X 10(6) and were sensitive to endo-beta-galactosidase (keratanase) treatment. The apparent high molecular weight of these glycoconjugates was confirmed by immunolabeling Western blots of testis extracts separated by SDS-polyacrylamide gel electrophoresis. The results suggest that polylactosamine (keratan) glycoconjugates of high molecular weight are associated with the plasma membranes of meiotic and haploid male germ cells. The effects of sialidase on antibody labeling patterns suggest that changes in cell surface sialylation accompany the transition of early meiotic germ cells to pachytene spermatocytes during spermatogenesis.
- Subjects :
- Male
Somatic cell
medicine.drug_class
Carbohydrates
Fluorescent Antibody Technique
Neuraminidase
Monoclonal antibody
Immunoenzyme Techniques
Immunolabeling
Mice
Gonocyte
Antigen
Testis
medicine
Animals
Sexual Maturation
Spermatogenesis
Molecular Biology
biology
Antibodies, Monoclonal
Cell Biology
Molecular biology
medicine.anatomical_structure
Antigens, Surface
biology.protein
Antibody
Haptens
Germ cell
Developmental Biology
Subjects
Details
- ISSN :
- 00121606
- Volume :
- 103
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Developmental biology
- Accession number :
- edsair.doi.dedup.....5ba6b81954156b9c501aea2b3ea0c3d0