RT Journal Article T1 Human epithelial cells trigger dendritic cell mediated allergic inflammation by producing TSLP. A1 Soumelis, Vassili A1 Kanzler, Holger A1 Reche Gallardo, Pedro Antonio A1 Yuan, Wei A1 Edward, Gina A1 Homey, Bernhart A1 Gilliet, Michel A1 Ho, Steve A1 Antonenko, Svetlana A1 Lauerma, Annti A1 Smith, Kathleen A1 Gorman, Daniel A1 Zurawski, Sandra M. A1 Abrams, Jon A1 Menon, Satish A1 McClanahan, Terri A1 Waal-Malefyt, Rene de A1 Bazan, Fernando A1 Kastelein, Robert A. A1 Liu, Yong-Jun AB Whether epithelial cells play a role in triggering the immune cascade leading to T helper 2 (T(H)2)-type allergic inflammation is not known. We show here that human thymic stromal lymphopoietin (TSLP) potently activated CD11c(+) dendritic cells (DCs) and induced production of the T(H)2-attracting chemokines TARC (thymus and activation-regulated chemokine; also known as CCL17) and MDC (macrophage-derived chemokine; CCL22). TSLP-activated DCs primed naïve T(H) cells to produce the proallergic cytokines interleukin 4 (IL-4), IL-5, IL-13 and tumor necrosis factor-alpha, while down-regulating IL-10 and interferon-gamma. TSLP was highly expressed by epithelial cells, especially keratinocytes from patients with atopic dermatitis. TSLP expression was associated with Langerhans cell migration and activation in situ. These findings shed new light on the function of human TSLP and the role played by epithelial cells and DCs in initiating allergic inflammation. PB Nature Publishing Group SN 1529-2908 YR 2002 FD 2002 LK https://hdl.handle.net/20.500.14352/58247 UL https://hdl.handle.net/20.500.14352/58247 LA eng DS Docta Complutense RD 13 abr 2025