Telocytes play a key role in prostate tissue organisation during the gland morphogenesis

• Grant number: 17/08107-0
• Support Opportunities: Regular Research Grants - Publications - Scientific article
• Start date: July 01, 2017
• End date: December 31, 2017
• Field of knowledge: Biological Sciences - Morphology - Histology
• Principal Investigator: Sebastião Roberto Taboga
• Grantee: Sebastião Roberto Taboga
• Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil
• City of the host institution: São José do Rio Preto

Abstract

Telocytes are CD34-positive interstitial cells, known to exert several functions, one of which is a role in tissue organisation, previously demonstrated by telocytes in the myocardium. The existence of telocytes in the prostate has recently been reported, however, there is a lack of information regarding the function of these cells in prostate tissue, as well as information regarding the possible role of these cells in prostatic development. The present study used immunofluorescence techniques in prostate tissue and prostatic telocytes in culture to determine the relationship between telocytes and prostate morphogenesis. Furthermore, immunofluorescent labeling of telocytes was performed on prostate tissue at different stages of early postnatal development. Initially, CD34 positive cells are found at the periphery of the developing alveoli, later in the same region, c-kit-positive cells and cells positive for both factors are verified and CD34-positive cells were predominantly observed in the interalveolar stroma and the region surrounding the periductal smooth muscle. Fluorescence assays also demonstrated that telocytes secrete TGF-²1 and are ER-Beta (ER²) positive. The results suggest that telocytes play a changing role during development, initially supporting the differentiation of periductal and perialveolar smooth muscle, and later, producing dense networks that separate alveoli groups and form a barrier between the interalveolar region and periurethral smooth muscle. We conclude that telocytes play a relevant role in prostate tissue organisation during postnatal development. (AU)