PMID: 11906918Mar 22, 2002Paper

Dynamic testicular adhesion junctions are immunologically unique. II. Localization of classic cadherins in rat testis

Biology of Reproduction
Kamin J Johnson, Kim Boekelheide

Abstract

In the seminiferous epithelium, morphologically diverse junctions mediate inter-Sertoli and Sertoli-germ cell adhesive contact and likely transmit signals between contacting cells. Defining the molecular composition of testicular cell-cell junctions is an important step in determining their function. Proteins belonging to the cadherin superfamily are important mediators of cell-cell adhesion, as well as cell signaling. Here, we determined the spatial and temporal protein expression of four classic cadherins in rat testis: N-cadherin, cadherin-6, cadherin-11, and a cadherin defined by an antiserum generated against a conserved classic cadherin peptide (L4). Through Western blot analysis, all antibodies recognized unique proteins. Similarly, each cadherin displayed unique, cell-type specific immunostaining patterns. Whereas N-cadherin, cadherin-11, and L4-positive cadherin were expressed from Postnatal Day 7 through adulthood, cadherin-6 protein was not present at Postnatal Day 7 and first appeared at Day 21. Immunostaining of testis cryosections on Postnatal Days 7, 21, 31, 43, and those of adults indicated that cadherin-11 localized to peritubular cell junctions. N-cadherin immunostaining localized to basal inter-Sertoli juncti...Continue Reading

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Citations

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Apr 2, 2009·Anatomical Science International·Tomohiko Wakayama, Shoichi Iseki
Jun 24, 2010·Nature Reviews. Endocrinology·C Yan Cheng, Dolores D Mruk
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