474 research outputs found

    'It was suddenly hard winter':John Burnside's Crossings

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    John Burnside’s poetry and fiction presents the reader with an awkward, uncanny sense of Being. It achieves this through forcing on the reader moments of suspension—epoché in the sense given this word by German phenomenologist Edmund Husserl—which both present and enact shifts in perception of the relationship between self and other, subject and world, memory and the past, which discomforts in its suspension of narrative time as it opens up a phenomenological apperception of Being through the multiple figure of the act of crossing—between past and present, self and other, memory and forgetfulness. In each example there is an irreversible transformation of human understanding that foregrounds the condition of Being in its materiality

    S-Geranylgeranyl-L-glutathione is a ligand for human B cell-confinement receptor P2RY8.

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    Germinal centres are important sites for antibody diversification and affinity maturation, and are also a common origin of B cell malignancies. Despite being made up of motile cells, germinal centres are tightly confined within B cell follicles. The cues that promote this confinement are incompletely understood. P2RY8 is a Gα13-coupled receptor that mediates the inhibition of migration and regulates the growth of B cells in lymphoid tissues1,2. P2RY8 is frequently mutated in germinal-centre B cell-like diffuse large B cell lymphoma (GCB-DLBCL) and Burkitt lymphoma1,3-6, and the ligand for this receptor has not yet been identified. Here we perform a search for P2RY8 ligands and find P2RY8 bioactivity in bile and in culture supernatants of several mouse and human cell lines. Using a seven-step biochemical fractionation procedure and a drop-out mass spectrometry approach, we show that a previously undescribed biomolecule, S-geranylgeranyl-L-glutathione (GGG), is a potent P2RY8 ligand that is detectable in lymphoid tissues at the nanomolar level. GGG inhibited the chemokine-mediated migration of human germinal-centre B cells and T follicular helper cells, and antagonized the induction of phosphorylated AKT in germinal-centre B cells. We also found that the enzyme gamma-glutamyltransferase-5 (GGT5), which was highly expressed by follicular dendritic cells, metabolized GGG to a form that did not activate the receptor. Overexpression of GGT5 disrupted the ability of P2RY8 to promote B cell confinement to germinal centres, which indicates that GGT5 establishes a GGG gradient in lymphoid tissues. This work defines GGG as an intercellular signalling molecule that is involved in organizing and controlling germinal-centre responses. As the P2RY8 locus is modified in several other types of cancer in addition to GCB-DLBCL and Burkitt lymphoma, we speculate that GGG might have organizing and growth-regulatory roles in multiple human tissues

    'Avec Vous?' Islamophobia and the Macron Presidency

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    Dickens's London

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    Taking Walter Benjamin's Arcades Project as an inspiration, Dickens's London offers an exciting and original project that opens a dialogue between phenomenology, philosophy and the Dickensian representation of the city in all its forms. Julian Wolfreys suggests that in their representations of London - its streets, buildings, public institutions, domestic residences, rooms and phenomena that constitute such space - Dickens's novels and journalism can be seen as forerunners of urban and material phenomenology. While also addressing those aspects of the urban that are developed from Dickens's interpretations of other literary forms, styles and genres, Dickens's London presents in twenty-six episodes (from Banking and Breakfast via the Insolvent Court, Melancholy and Poverty, to Todgers and Time, Voice and Waking) a radical reorientation to London in the nineteenth century, the development of Dickens as a writer, and the ways in which readers today receive and perceive both

    Introduction: transgressions or, beyond the obvious

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    Introduction: transgressions or, beyond the obviou
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