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Université de Fribourg

An inflamed human alveolar model for testing the efficiency of anti-inflammatory drugs in vitro

Drasler, Barbara ; Karakocak, Bedia Begum ; Tankus, Esma Bahar ; Barosova, Hana ; Abe, Jun ; Sousa de Almeida, Mauro ; Petri-Fink, Alke ; Rothen-Rutishauser, Barbara

In: Frontiers in Bioengineering and Biotechnology, 2020, vol. 8, p. -

A large number of prevalent lung diseases is associated with tissue inflammation. Clinically, corticosteroid therapies are applied systemically or via inhalation for the treatment of lung inflammation, and a number of novel therapies are being developed that require preclinical testing. In alveoli, macrophages and dendritic cells play a key role in initiating and diminishing pro-inflammatory...

Université de Fribourg

Targeting the extra-cellular matrix—tumor cell crosstalk for anti-cancer therapy: emerging alternatives to integrin inhibitors

Lorusso, Girieca ; Rüegg, Curzio ; Kuonen, François

In: Frontiers in Oncology, 2020, vol. 10, p. -

The extracellular matrix (ECM) is a complex network composed of a multitude of different macromolecules. ECM components typically provide a supportive structure to the tissue and engender positional information and crosstalk with neighboring cells in a dynamic reciprocal manner, thereby regulating tissue development and homeostasis. During tumor progression, tumor cells commonly modify and...

Université de Fribourg

Magi1, a new potential tumor suppressor gene in estrogen receptor positive breast cancer

Alday-Parejo, Begoña ; Richard, François ; Wörthmüller, Janine ; Rau, Tilman ; Galván, José A. ; Desmedt, Christine ; Santamaria-Martinez, Albert ; Rüegg, Curzio

In: Cancers, 2020, vol. 12, no. 1, p. 223

Membrane-associated guanylate kinase (MAGUK) with inverted domain structure-1 (MAGI1) is an intracellular adaptor protein that stabilizes epithelial junctions consistent with a tumor suppressive function in several cancers of epithelial origin. Here we report, based on experimental results and human breast cancer (BC) patients’ gene expression data, that MAGI1 is highly expressed and acts...

Università della Svizzera italiana

Bovine lactoferrin-induced CCL1 expression involves distinct receptors in monocyte-derived dendritic cells and their monocyte precursors

Latorre, Daniela ; Pulvirenti, Nadia ; Covino, Daniela Angela ; Varano, Barbara ; Purificato, Cristina ; Rainaldi, Gabriella ; Gauzzi, Maria Cristina ; Fantuzzi, Laura ; Conti, Lucia ; Donninelli, Gloria ; Del Cornò, Manuela ; Sabbatucci, Michela ; Gessani, Sandra ; Puddu, Patrizia

In: Toxins, 2015, vol. 7, no. 12, p. 5472-5483

Lactoferrin (LF) exhibits a wide range of immunomodulatory activities including modulation of cytokine and chemokine secretion. In this study, we demonstrate that bovine LF (bLF) up-modulates, in a concentration- and time-dependent manner, CCL1 secretion in monocytes (Mo) at the early stage of differentiation toward dendritic cells (DCs), and in fully differentiated immature Mo-derived DCs...

Université de Fribourg

Initial viral inoculum determines kinapse-and synapse-like t cell motility in reactive lymph nodes

Sivapatham, Sujana ; Ficht, Xenia ; Albuquerque, Juliana Barreto de ; Page, Nicolas ; Merkler, Doron ; Stein, Jens V.

In: Frontiers in Immunology, 2019, vol. 10, p. -

T cell activation in lymphoid tissue occurs through interactions with cognate peptide- major histocompatibility complex (pMHC)-presenting dendritic cells (DCs). Intravital imaging studies using ex vivo peptide-pulsed DCs have uncovered that cognate pMHC levels imprint a wide range of dynamic contacts between these two cell types. T cell—DC interactions vary between transient,...

Université de Fribourg

Large-scale analysis of the mycoplasma bovis genome identified non-essential, adhesion- and virulence-related genes

Josi, Christoph ; Bürki, Sibylle ; Vidal, Sara ; Dordet-Frisoni, Emilie ; Citti, Christine ; Falquet, Laurent ; Pilo, Paola

In: Frontiers in Microbiology, 2019, vol. 10, p. -

Mycoplasma bovis is an important pathogen of cattle causing bovine mycoplasmosis. Clinical manifestations are numerous, but pneumonia, mastitis, and arthritis cases are mainly reported. Currently, no efficient vaccine is available and antibiotic treatments are not always satisfactory. The design of new, efficient prophylactic and therapeutic approaches requires a better understanding of the...

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

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...

Università della Svizzera italiana

Antigen-specific Th17 cells are primed by distinct and complementary dendritic cell subsets in oropharyngeal candidiasis

Trautwein-Weidner, Kerstin ; Gladiator, André ; Kirchner, Florian R. ; Becattini, Simone ; Rülicke, Thomas ; Sallusto, Federica ; LeibundGut-Landmann, Salomé

In: PLoS pathogens, 2015, vol. 11, no. 10, p. e1005164

Candida spp. can cause severe and chronic mucocutaneous and systemic infections in immunocompromised individuals. Protection from mucocutaneous candidiasis depends on T helper cells, in particular those secreting IL-17. The events regulating T cell activation and differentiation toward effector fates in response to fungal invasion in different tissues are poorly understood. Here we generated...