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Università della Svizzera italiana

TRPM7 kinase activity is essential for T cell colonization and alloreactivity in the gut

Romagnani, Andrea ; Vettore, Valentina ; Rezzonico-Jost, Tanja ; Hampe, Sarah ; Rottoli, Elsa ; Nadolni, Wiebke ; Perotti, Michela ; Meier, Melanie A. ; Hermanns, Constanze ; Geiger, Sheila ; Wennemuth, Gunther ; Recordati, Camilla ; Matsushita, Masayuki ; Muehlich, Susanne ; Proietti, Michele ; Chubanov, Vladimir ; Gudermann, Thomas ; Grassi, Fabio ; Zierler, Susanna

In: Nature communications, 2017, vol. 8, p. 1917

The melastatin-like transient-receptor-potential-7 protein (TRPM7), harbouring a cation channel and a serine/threonine kinase, has been implicated in thymopoiesis and cytokine expression. Here we show, by analysing TRPM7 kinase-dead mutant (Trpm7 R/R) mice, that the enzymatic activity of the receptor is not essential for thymopoiesis, but is required for CD103 transcription and gut-homing of ...

Università della Svizzera italiana

Selective preservation of bone marrow mature recirculating but not marginal zone B cells in murine models of chronic inflammation

Traggiai, Elisabetta ; Casati, Anna ; Frascoli, Michela ; Porcellini, Simona ; Ponzoni, Maurilio ; Sanvito, Francesca ; Leng, Lin ; Bucala, Richard ; Moretta, Lorenzo ; Grassi, Fabio

In: Plos one, 2010, vol. 5, no. 6, p. e11262

Inflammation promotes granulopoiesis over B lymphopoiesis in the bone marrow (BM). We studied B cell homeostasis in two murine models of T cell mediated chronic inflammation, namely calreticulin-deficient fetal liver chimeras (FLC), which develop severe blepharitis and alopecia due to T cell hyper responsiveness, and inflammatory bowel disease (IBD) caused by injection of CD4+ naïve T cells...