The cell–cell junctions of mammalian testes

Summary

DOMKE, L.M. 2020.
The cell–cell junctions of mammalian testes—a summary
Cell Tissue Res. 379, 73–74

Commentary article in the CTR Special Issue "Tribute to Werner Franke" on the occassion of his 80th birthday in January 2020

 

Double-label immunofluorescence microscopy of cryostat cross-sections through seminiferous tubules of frozen bull testes.
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First publication

DOMKE, L.M., RICKELT, S., DÖRFLINGER, Y., KUHN, C., WINTER-SIMANOWSKI, S., ZIMBELMANN, R., *ROSIN-ARBESFELD, R., HEID, H., FRANKE, W.W. 2014.
The cell-cell junctions of mammalian testes:
I. The adhering junctions of the seminiferous tubule epithelium represent special differentiation structures.
Cell Tissue Res. 357, 645-665 (published online 8 June 2014; DOI 10.1007/s00441-014-1906-9)

 

Reprint

Cover illustration: Cell & Tissue Research 357 (3)

Double-label immunofluorescence microscopy on a phase contrast background demonstrates the existence of two compositionally very different kinds of adherens junctions in a cross-section through an excurrrent duct epithelium of rat testis, the apical zonula adhaerens containing both plaque proteins, β-catenin (green) and protein myozap (red), resulting in yellow merger colour. By contrast, the lateral punctate or fascia-like adherens junctions contain only the β-catenin. M, mesenchymal cells; S, aggregate of spermatozoa.

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Second publication

DOMKE, L.M., FRANKE, W.W. 2019.
The cell–cell junctions of mammalian testes:
II. The smooth muscle monolayer cells of the peritubular wall are laterally connected in closely overlapping, lamelliform protrusions by vertical adherens junctions – a novel architectural cell junction system and a novel kind of muscle tissue.
Cell Tissue Res. 375, 451-482 (published online 27. Dec. 2018; DOI: 10.1007/s00441-018-2968-x)

 

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Cover illustration: Cell & Tissue Research 375 (2)

Electron micrograph of an ultrathin cross-section through the inner portion of the peritubular wall of a seminiferous tubule in a bull testis. The uppermost left shows a part of the basal lamina bordering on a Sertoli cell and the first extracellular matrix (ECM) layer characterized by cross-sectioned collagen fibers. This layer is followed by three lamellar smooth muscle cell (LSMC) monolayers alternating with ECM layers, all rich in collagen fibers-

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Third publication

FRANKE, W.W., DOMKE, L.M., DÖRFLINGER, Y., ZIMBELMANN, R. 2020.
The cell–cell junctions of mammalian testes:
III. Absence of an endothelial cell layer covering the peritubular wall of the seminiferous tubules – an immunocytochemical correction of a fifty-year-old error in the literature.
Cell Tissue Res. 379, 75-92 (published online 12 November 2019; DOI 10.1007/s00441-019-03116-5)

 

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