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  • Title: In vitro impact of bisphenols BPA, BPF, BPAF and 17β-estradiol (E2) on human monocyte-derived dendritic cell generation, maturation and function.
    Author: Švajger U, Dolenc MS, Jeras M.
    Journal: Int Immunopharmacol; 2016 May; 34():146-154. PubMed ID: 26945833.
    Abstract:
    Bisphenols (BPs) are widely spread pollutants that act as estrogen-like endocrine disruptors and are potentially affecting human health on a long run. We explored the effects of BPA, BPF and BPAF, on in vitro differentiation and maturation of MDDCs. Monocytes were treated with 17β-estradiol (E2) and each BP at the beginning of their differentiation into iMDDCs. We found that 10 and 50 μM of BPA and BPF, 10 and 30μM of BPAF and 10 and 50 nM of E2 did not affect cell viability. However, 50 μM of BPA and BPF, as well as 10 and 30 μM of BPAF, significantly decreased the endocytotic capacity of iMDDCs. Both, BPA (50 μM) and BPAF (30 μM) decreased the expression of CD1a and increased the amount of DC-SIGN molecules on iMDDCs. The E2 pre-treatment moderately decreased expression of CD80, CD86 and CD83 co-stimulatory molecules while increasing the numbers of HLA-DR on mMDDCs. Only BPAF significantly influenced the expression of CD80 and CD86 (both decreased), as well as CD83 and HLA-DR molecules (both increased) on mMDDCs. In addition, BPAF modulated DC maturation signaling pathways by lowering the phosphorylation of p65 NF-κB (nuclear factor-kappaB) and ERK (extracellular signal regulated kinase) 1/2 proteins. Consequently, the in vitro proliferation of allogeneic T cells, stimulated with differently pre-treated iMDDCs and mMDDCs, was significantly reduced only in case of BPAF.
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