1. Fra1 activity in the frog, Rana esculenta, testis: a new potential role in sperm transport
- Author
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COBELLIS, Gilda, PIERANTONI, Riccardo, FASANO, Silvia, LOMBARDI M., SCARPA D., IZZO G., FIENGA G., MECCARIELLO R., Cobellis, Gilda, Lombardi, M., Scarpa, D., Izzo, G., Fienga, G., Meccariello, R., Pierantoni, Riccardo, and Fasano, Silvia
- Subjects
reproduction ,Fra-1 activity ,male sexual function ,sperm motility ,Fos family protein - Abstract
Using an anti-Fos family member antibody, we have previously described in Rana esculenta testis the presence of a nuclear, 43 kDa protein that we hypothesized to be Fra-1. With the assistance of an antibody against Fra-1 that does not crossreact with other Fos family members, here we report data on Fra-1 expression, localization, and putative activity in Rana esculenta testis during its annual reproductive cycle.Western blot analysis confirms that the nuclear, 43 kDa protein is Fra-1. Immunocytochemistry validates the Western blot results and shows cytoplasmic and nuclear immunostaining of Fra-1 in peritubular myoid cells, efferent ducts, and blood vessels. We report for the first time in a vertebrate, experimental evidence showing that the expression of Fra-1 is related to peritubular myoid cells during sperm transport from the tubular compartment to efferent ducts.
- Published
- 2005