Related Experiment Videos
CD 99 and CD 106 (VCAM-1) in human testis
E Veräjäkorva1, M Laato, P Pöllänen
1Department of Anatomy, University of Turku, Finland. esolve@utu.fi
Asian Journal of Andrology
|January 1, 2003
Summary
The human testis expresses CD99 and CD106 (VCAM-1) adhesion proteins but not key cytokines. CD106 in Leydig cells suggests potential lymphocyte adhesion, similar to rodents.
Area of Science:
- Reproductive biology
- Immunology
- Cell biology
Background:
- Cytokines and adhesion proteins play roles in immune responses and cell interactions.
- Understanding their presence in the human testis is crucial for reproductive health and immunology.
Purpose of the Study:
- To investigate the protein-level expression of specific cytokines (IL-2, IL-6, IL-10, IFN-γ, TNF-α) and adhesion proteins (CD99, CD106) in the human testis.
Main Methods:
- Immunohistochemistry was used to visualize protein expression within testicular tissue.
- Immunoblotting was employed to confirm protein presence and molecular weight.
Main Results:
- No studied cytokines were detected in the human testis.
- CD99 and CD106 (VCAM-1) showed strong expression across all investigated testes.
- CD99 localized to interstitial tissue and Sertoli cells; CD106 localized to Leydig cells and basal Sertoli cells. A novel CD99 isoform was identified.
Conclusions:
- The human testis synthesizes CD99 and CD106 (VCAM-1).
- CD106 expression in Leydig cells indicates a potential mechanism for lymphocyte adhesion, mirroring findings in rodent models.