ArticleThe journal of histochemistry and cytochemistry : official journal of the Histochemistry Society
The Human Mechanosensory Corpuscles: A New Schwann Cell Localization of the Wilms' Tumor Protein WT1.
Article in The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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5 authors.
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Abstract
SummaryThe Wilms' Tumor protein WT1 is a zinc-finger transcription factor with crucial roles in organogenesis, cell differentiation, tissue homeostasis, and oncogenesis. While its expression has been extensively studied in various tissues, its presence in the nervous system, particularly in peripheral glial cells, remains largely unexplored. In this study, we examined WT1 expression in the Schwann cells of mechanosensory corpuscles, nerve bundles, and free nerve endings (FNEs) within human penile tissues. Using single and double immunohistology, we analyzed WT1 coexpression with Schwann cell markers (S100, nestin, SOX10) and its association with axonal (neurofilaments, neuron-specific enolase, tyrosine hydroxylase) and perineurial/endoneurial markers (Glut-1, α-SMA, CD34). We found consistent WT1 cytoplasmic expression in the Schwann cells of Pacinian, Meissner, Krause, genital, Golgi-Mazzoni, and Ruffini-like corpuscles, with variable staining intensity. Confocal microscopy revealed WT1 colocalized with nestin but not S100, suggesting involvement in cytoskeletal organization. In addition, we documented WT1 in myelinating Schwann cells of nerve bundles, with distinct staining patterns in Cajal bands and Schmidt-Lanterman incisures, as well as in non-myelinating Schwann cells of FNEs. This is the first study to describe WT1 expression in sensory corpuscles, implicating it in Schwann cell development, maintenance, or plasticity, with potential relevance for peripheral nerve biology, pathology, and mechanosensation.
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