Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Hutter, H; Hammer, A; Blaschitz, A; Hartmann, M; Mahnert, W; Sedlmayr, P; Primus, G; Rosenkranz, C; Gebru, G; Henkel, R; Dohr, G.
The monoclonal antibody GZS-1 detects a maturation-associated antigen of human spermatozoa that is also present on the surface of human mononuclear blood cells.
J Reprod Immunol. 1996; 30(2-3):115-132
Doi: 10.1016%2F0165-0378%2896%2900959-X
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- Führende Autor*innen der Med Uni Graz
- Hutter Heinz
- Co-Autor*innen der Med Uni Graz
- Blaschitz Astrid
- Dohr Gottfried
- Hammer Astrid
- Hartmann Michaele
- Sedlmayr Peter
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- Abstract:
- A monoclonal antibody (GZS-1) has been generated by fusion of mouse myeloma cells with spleen cells from BALB/c mice immunised with human sperm cells. The antibody was determined to be an IgG1. The corresponding antigen is present on the whole surface of ejaculated human spermatozoa. It is not detectable on spermatozoa of other mammalian species (rabbit, cat, dog, sheep, boar, bull, horse). In human male genital organs, immunostaining with GZS-1 is observed on sperm cells in the epididymis and the ductus deferens together with the lining epithelium of those organs. No reactivity of sperm cells or germ cell precursors in the testis has been detected. Functional tests using the antibody show a strong inhibitory effect of human sperm in the hamster egg penetration assay. Furthermore, the GZS-1 antigen is detectable on the surface of human lymphocytes and monocytes by immunogold electron microscopy and FACS analysis. By Western blotting of human sperm and seminal plasma performed under reducing conditions immunostaining was detected at 21-25, 31, 51-54, and 62 kDa. The reaction with human lymphocytes shows one major band at 62 kDa and additional bands at 31 and 54 kDa. The results suggest that the monoclonal antibody GZS-1 may recognise an antigen which is secreted from the epithelial cells of the epididymis and binds to ejaculated spermatozoa as a sperm coating antigen. This component may be involved in the capacitation of the sperm and the acrosome reaction. Molecules that are expressed both on sperm and on immunocompetent cells may be relevant for the regulation of immunological processes or for the development of the related immunological tolerance of sperm in the female reproductive tract.
- Find related publications in this database (using NLM MeSH Indexing)
- Antibodies, Monoclonal - diagnostic use
- Antigens, CD - analysis
- Cross Reactions - immunology
- Fluorescent Antibody Technique, Indirect - immunology
- Humans - immunology
- Immunohistochemistry - immunology
- Leukocytes, Mononuclear - immunology
- Male - immunology
- Spermatozoa - immunology
- Find related publications in this database (Keywords)
- Monoclonal Antibody
- Human Spermatozoa
- Gzs-1 Antigen
- Lymphocytes