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Streptococcus pyogenes can cause invasive disease with high mortality despite adequate antibiotic treatments. To address this unmet need, we have previously generated an opsonic IgG1 monoclonal antibody, Ab25, targeting the bacterial M protein. Here, we engineer the IgG2-4 subclasses of Ab25. Despite having reduced binding, the IgG3 version promotes stronger phagocytosis of bacteria. Using atomic

Enzymes that affect glycoproteins of the human immune system, and thereby modulate defense responses, are abundant among bacterial pathogens. Two endoglycosidases from the human pathogen Streptococcus pyogenes, EndoS and EndoS2, have recently been shown to hydrolyze N-linked glycans of human IgG. However, detailed characterization and comparison of the hydrolyzing activities have not been performe

This project is an collaboration with Höganäs AB, with the goal to design a light vehicle that meets the demands of the modern commuter, in function as well as in quality and sustainability. The result of the project is a light scooter using Höganäs E-Drive system, with Hydrogen Fuel Cells as the power source. The vehicle is designed to be adaptable to the user, while still being comfortable and e

By use of a batch microcalorimeter of the thermopile type, heat production was measured in isolated populations of human peripheral blood cells exposed to defined immune complexes formed in vitro. It was found that most of the heat production recorded in whole blood after admixture of immune complexes occurs in the granulocytes. Under these conditions small but constantly higher activation values

Antikroppar har ett brett användningsområde med stor potential men det är svårt att skapa stabila lösningar. Den strukturella stabiliteten är en viktig faktor när man väljer läkemedelskandidater, och i de tidiga utvecklingsstadierna görs prediktiva undersökningar för att ta reda på varje kandidats stabilitet och utvecklings-potential. Därmed är det av största intresse att utvärdera hur antikropparA great challenge during early development of medicinal antibodies is to determine the stability of the candidates. This is required to be able to select the candidates with the greatest developability. The stability of the candidates can be estimated using different orthogonal techniques and the aim of this investigation was thus to use orthogonal techniques for the investigation of conformationa

Streptococcus bovis/Streptococcus equinus complex (SBSEC) is a common cause of infective endocarditis (IE). For IE-pathogens, the capacity to activate and aggregate platelets is believed to be an important virulence mechanism. While the interactions between bacteria and platelets have been described in detail for many Gram-positive pathogens, little research has been carried out with SBSEC in this

Platelets express Toll-like receptor 4 (TLR4), and this has been shown to be responsible for the thrombocytopenia induced by lipopolysaccharide (LPS) administration in vivo. We studied the role of LPS in mediating platelet phagocytosis by THP-1 cells in vitro by flow cytometry. Opsonization of platelets with an IgG monoclonal (W6/32) antibody or with IgG autoantibody-positive sera from patients wi

Although the communication aspects of sport and football organizations are receiving in-creased scholarly attention, research from the perspective of fans of such organizations has mostly been neglected. This study problematizes the gap that exists be-tween the current social media communication of football organizations, that tend to be guided by commercial interests, and the expectation of fans

Background: 4-1BB (CD137) is a co-stimulatory receptor highly expressed on tumor reactive effector T cells and NK cells, which upon stimulation prolongs persistence of tumor reactive effector T and NK cells within the tumor and induces long-lived memory T cells. 4-1BB agonistic antibodies have been shown to induce strong anti-tumor effects that synergize with immune checkpoint inhibitors. The firs

The immune processes associated with atherogenesis have received considerable attention during recent years. IgG FcRs (FcgammaR) are involved in activating the immune system and in maintaining peripheral tolerance. However, the role of the inhibitory IgG receptor FcgammaRIIB in atherosclerosis has not been defined. Bone marrow cells from FcgammaRIIB-deficient mice and C57BL/6 control mice were tra

Children and the transmission of religious identity to the next generation are matters of great concern in the Muslims European minorities. As a response to the challenge of cultural pluralism, a new brand of Islamic children’s literature has emerged. Based on examples of such literature, this paper argues that childhood discourse not only expresses heartfelt Muslim concerns. In the wake of migrat