title: Exacerbation of innate immune response in mouse primary cultured sertoli cells caused by nanoparticulate TiO2involves the TAM/TLR3 signal pathway.
abstract: Sertoli cells provide appropriate mitogens, differentiation factors and sources of energy for developing germ cells throughout the lifetime of males, and protect these germ cells from harmful agents and from the host's own immune system. Therefore, reductions in the rate and quality of spermatogenesis caused by nanoparticulate titanium dioxide (nano-TiO2) may be closely involved in the immunoregulation of Sertoli cells. However, the underlying mechanism of this response is still unclear. To address this issue, we used mouse primary cultured Sertoli cells to examine the toxic effects of nano-TiO2via alterations in morphology, cell viability, and activation of the TAM/TLR3 signal pathway. The results demonstrated that nano-TiO2could cross the cytomembrane into the cytoplasm or nucleus, decrease Sertoli cell viability, damage morphology (such as elongated fusiform, cellular and nuclear shrinkage) and induce the expression of various immune mediators and inflammatory cytokines, including TLR3(+0.31-fold to +0.81-fold), IL-lβ(+0.33-fold to +5.0-fold), NF-κB(+0.22-fold to +3.65-fold), IL-6(+0.47-fold to +3.53-fold), TNF-α(+0.14-fold to +2.44-fold), IFN-α(+0.17-fold to +2.27-fold), and IFN-β(+0.09-fold to +2.29-fold), and suppress the expression of Tyro3(-9.33% to -61.93%), Axl(-19.03% to -60.67%), Mer(-8.04% to -59.16%), and IκB(-34.35% to -86.59%) in primary cultured Sertoli cells. These results suggest that testicular innate immune responses to pathogens caused by nano-TiO2may be involved in the regulatory mechanisms of TAM/TLR3 signaling in testicular Sertoli cells. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 198-208, 2017.
authors.affiliation: Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.|Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.|School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Wu
authors.affiliation: Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.|Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.|School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
authors.forename: Fashui
authors.initials: F
authors.lastname: Hong
authors.affiliation: Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.|Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.|School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
authors.forename: Yingjun
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huaian, 223300, China.|Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Huaiyin Normal University, Huaian, 223300, China.|School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
authors.forename: Yajing
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D016207:Cytokines / Q000276:immunology; D007113:Immunity, Innate / Q000187:drug effects*; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D053758:Nanoparticles / Q000737:chemistry*; D012708:Sertoli Cells / Q000166:cytology / Q000276:immunology*; D015398:Signal Transduction / Q000187:drug effects*; D014025:Titanium / Q000737:chemistry / Q000494:pharmacology; D051196:Toll-Like Receptor 3 / Q000276:immunology*
chemical_list: D016207:Cytokines; C519703:TLR3 protein, mouse; D051196:Toll-Like Receptor 3; C009495:titanium dioxide; D014025:Titanium
keywords: cell injury; immune mediators; inflammatory cytokines; nanoparticulate titanium dioxide; primary cultured sertoli cells