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Università della Svizzera italiana

Phenotype and specificity of T cells in primary human cytomegalovirus infection during pregnancy : IL-7Rpos long-term memory phenotype is associated with protection from vertical transmission

Mele, Federico ; Fornara, Chiara ; Jarrossay, David ; Furione, Milena ; Arossa, Alessia ; Spinillo, Arsenio ; Lanzavecchia, Antonio ; Gerna, Giuseppe ; Sallusto, Federica ; Lilleri, Daniele

In: Plos one, 2017, vol. 12, no. 11, p. e0187731

Congenital human cytomegalovirus (HCMV) infection is the major cause of birth defects and a precise definition of the HCMV-specific T-cell response in primary infection may help define reliable correlates of immune protection during pregnancy. In this study, a high throughput method was used to define the frequency of CD4+ and CD8+ T cells specific for four HCMV proteins in the naïve...

Università della Svizzera italiana

Molecular signatures of immunity and immunogenicity in infection and vaccination

Haks, Mariëlle C. ; Bottazzi, Barbara ; Cecchinato, Valentina ; De Gregorio, Corinne ; Del Giudice, Giuseppe ; Kaufmann, Stefan H. E. ; Lanzavecchia, Antonio ; Lewis, David J. M. ; Maertzdorf, Jeroen ; Mantovani, Alberto ; Sallusto, Federica ; Sironi, Marina ; Uguccioni, Mariagrazia ; Ottenhoff, Tom H. M.

In: Frontiers in immunology, 2017, vol. 8, p. 1563

Vaccinology aims to understand what factors drive vaccine-induced immunity and protection. For many vaccines, however, the mechanisms underlying immunity and protection remain incompletely characterized at best, and except for neutralizing antibodies induced by viral vaccines, few correlates of protection exist. Recent omics and systems biology big data platforms have yielded valuable...

Università della Svizzera italiana

Transcriptional signature of human pro-inflammatory TH17 cells identifies reduced IL10 gene expression in multiple sclerosis

Hu, Dan ; Notarbartolo, Samuele ; Croonenborghs, Tom ; Patel, Bonny ; Cialic, Ron ; Yang, Tun-Hsiang ; Aschenbrenner, Dominik ; Andersson, Karin M. ; Gattorno, Marco ; Pham, Minh ; Kivisakk, Pia ; Pierre, Isabelle V. ; Lee, Youjin ; Kiani, Karun ; Bokarewa, Maria ; Tjon, Emily ; Pochet, Nathalie ; Sallusto, Federica ; Kuchroo, Vijay K. ; Weiner, Howard L.

In: Nature communications, 2017, vol. 8, p. 1600

We have previously reported the molecular signature of murine pathogenic TH17 cells that induce experimental autoimmune encephalomyelitis (EAE) in animals. Here we show that human peripheral blood IFN-γ+IL-17+ (TH1/17) and IFN-γ−IL-17+ (TH17) CD4+ T cells display distinct transcriptional profiles in high-throughput transcription analyses. Compared to TH17 cells, TH1/17 cells have gene...

Università della Svizzera italiana

Epicutaneous allergen application preferentially boosts specific T cell responses in sensitized patients

Campana, Raffaela ; Moritz, Katharina ; Neubauer, Angela ; Huber, Hans ; Henning, Rainer ; Brodie, Tess M. ; Kaider, Alexandra ; Sallusto, Federica ; Wöhrl, Stefan ; Valenta, Rudolf

In: Scientific reports, 2017, vol. 7, p. 11657

The effects of epicutaneous allergen administration on systemic immune responses in allergic and non-allergic individuals has not been investigated with defined allergen molecules. We studied the effects of epicutaneous administration of rBet v 1 and rBet v 1 fragments on systemic immune responses in allergic and non-allergic subjects. We conducted a clinical trial in which rBet v 1 and two...

Università della Svizzera italiana

Influenza vaccination induces NK-cell-mediated type-II IFN response that regulates humoral immunity in an IL-6-dependent manner

Farsakoglu, Yagmur ; Palomino-Segura, Miguel ; Latino, Irene ; Zanaga, Silvia ; Chatziandreou, Nikolaos ; Pizzagalli, Diego Ulisse ; Rinaldi, Andrea ; Bolis, Marco ; Sallusto, Federica ; Stein, Jens V. ; Gonzalez, Santiago F.

In: Cell reports, 2019, vol. 26, no. 9, p. 2307-2315.e5

The role of natural killer (NK) cells in the immune response against vaccines is not fully understood. Here, we examine the function of infiltrated NK cells in the initiation of the inflammatory response triggered by inactivated influenza virus vaccine in the draining lymph node (LN). We observed that, following vaccination, NK cells are recruited to the interfollicular and medullary areas of...

Università della Svizzera italiana

Induction of potent neutralizing antibody responses by a designed protein nanoparticle accine for respiratory syncytial virus

Marcandalli, Jessica ; Fiala, Brooke ; Ols, Sebastian ; Perotti, Michela ; de van der Schueren, Willem ; Snijder, Joost ; Hodge, Edgar ; Benhaim, Mark ; Ravichandran, Rashmi ; Carter, Lauren ; Sheffler, Will ; Brunner, Livia ; Lawrenz, Maria ; Dubois, Patrice ; Lanzavecchia, Antonio ; Sallusto, Federica ; Lee, Kelly K. ; Veesler, David ; Correnti, Colin E. ; Stewart, Lance J. ; Baker, David ; Loré, Karin ; Perez, Laurent ; King, Neil P.

In: Cell, 2019, vol. 177, no. 6, p. 1420-1431.e17

Respiratory syncytial virus (RSV) is a worldwide public health concern for which no vaccine is available. Elucidation of the prefusion structure of the RSV F glycoprotein and its identification as the main target of neutralizing antibodies have provided new opportunities for development of an effective vaccine. Here, we describe the structure-based design of a self-assembling protein ...

Università della Svizzera italiana

PECAM-1 stabilizes blood-brain barrier integrity and favors paracellular T-Cell diapedesis across the blood-brain barrier during neuroinflammation

Wimmer, Isabella ; Tietz, Silvia ; Nishihara, Hideaki ; Deutsch, Urban ; Sallusto, Federica ; Gosselet, Fabien ; Lyck, Ruth ; Muller, William A. ; Lassmann, Hans ; Engelhardt, Britta

In: Frontiers in immunology, 2019, vol. 10, p. 711

Breakdown of the blood-brain barrier (BBB) and increased immune cell trafficking into the central nervous system (CNS) are hallmarks of the pathogenesis of multiple sclerosis (MS). Platelet endothelial cell adhesion molecule-1 (PECAM-1; CD31) is expressed on cells of the vascular compartment and regulates vascular integrity and immune cell trafficking. Involvement of PECAM-1 in MS pathogenesis...

Università della Svizzera italiana

Macrophage death following influenza vaccination initiates the inflammatory response that promotes dendritic cell function in the draining lymph node

Chatziandreou, Nikolaos ; Farsakoglu, Yagmur ; Palomino-Segura, Miguel ; D’Antuono, Rocco ; Pizzagalli, Diego Ulisse ; Sallusto, Federica ; Lukacs-Kornek, Veronika ; Uguccioni, Mariagrazia ; Corti, Davide ; Turley, Shannon J. ; Lanzavecchia, Antonio ; Carroll, Michael C. ; Gonzalez, Santiago F.

In: Cell reports, 2017, vol. 18, no. 10, p. 2427-2440

The mechanism by which inflammation influences the adaptive response to vaccines is not fully understood. Here, we examine the role of lymph node macrophages (LNMs) in the induction of the cytokine storm triggered by inactivated influenza virus vaccine. Following vaccination, LNMs undergo inflammasome-independent necrosis-like death that is reliant on MyD88 and Toll-like receptor 7 (TLR7)...

Università della Svizzera italiana

IL-12 protects from psoriasiform skin inflammation

Kulig, Paulina ; Musiol, Stephanie ; Freiberger, Sandra Nicole ; Schreiner, Bettina ; Gyülveszi, Gabor ; Russo, Giancarlo ; Pantelyushin, Stanislav ; Kishihara, Kenji ; Alessandrini, Francesca ; Kündig, Thomas ; Sallusto, Federica ; Hofbauer, Günther F.L. ; Haak, Stefan ; Becher, Burkhard

In: Nature communications, 2016, vol. 7, p. 13466

Neutralization of the common p40-subunit of IL-12/23 in psoriasis patients has led to a breakthrough in the management of moderate to severe disease. Aside from neutralizing IL-23, which is thought to be responsible for the curative effect, anti-p40 therapy also interferes with IL-12 signalling and type 1 immunity. Here we dissect the individual contribution of these two cytokines to the...

Università della Svizzera italiana

Experimental priming of encephalitogenic Th1/Th17 cells requires pertussis toxin-driven IL-1β production by myeloid cells

Ronchi, Francesca ; Basso, Camilla ; Preite, Silvia ; Reboldi, Andrea ; Baumjohann, Dirk ; Perlini, Luana ; Lanzavecchia, Antonio ; Sallusto, Federica

In: Nature communications, 2016, vol. 7, p. 11541

CD4+ Th17 are heterogeneous in terms of cytokine production and capacity to initiate autoimmune diseases, such as experimental autoimmune encephalomyelitis (EAE). Here we demonstrate that experimental priming of encephalitogenic Th cells expressing RORγt and T-bet and producing IL-17A, IFN-γ and GM-CSF but not IL-10 (Th1/Th17), is dependent on the presence of pertussis toxin (PTX) at the...