CD4-like molecules in human sperm |
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| Authors: | B Gobert C Amiel J Q Tang P Barbarino M C Béné G Faure |
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| Institution: | Laboratoire d'Immunologie, Faculté de Médecine, Université de Nancy, Vandoeuvre-les Nancy, France. |
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| Abstract: | The expression of a molecule recognized by CD4 monoclonal antibodies was investigated on human sperm using immunolabelling, biochemical and immunochemical methods. Flow cytometry detected a significant fluorescence signal. SDS-PAGE analysis and Western blotting identified a molecule of 60 kDa, consistent with a CD4-like structure as confirmed after selective immunoseparation. Additional bands reacting with anti-CD4 were found in sperm extracts (73 kDa) and seminal fluid (90 kDa). These data indicate that sperm express a molecule similar to the receptor for HIV described on mononuclear cells. |
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