| 1. |
- Birgersson, Tobias, 1973, et al.
(författare)
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LOD 20 ÅR : Cinnober 1-5
- 2019
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Ingår i: VIDA MUSEUM & KONSTHALL, BORGHOLM, SWEDEN.
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Konstnärligt arbete (övrigt vetenskapligt/konstnärligt)abstract
- Gallery LOD 20 Years Exhibition at VIDA MUSEUM&ARTHALL Borgholm, Sweden. Gallery LOD’s anniversary exhibition included a timeline of work from twenty years ago leading up to current work created by LODs’ seven makers. Tobias Birgersson’s contribution to the exhibition was curation of the group exhibition and a new collaboratorive series with Gilding master Wolfgang Bremer “Cinnober 1-5”, first shown at the VIDA exhibition.
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| 2. |
- Serrander, Lena, et al.
(författare)
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Selective Inhibition of IgG-Mediated Phagocytosis in Gelsolin-Deficient Murine Neutrophils
- 2000
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Ingår i: Journal of Immunology. - 0022-1767 .- 1550-6606. ; 165:5, s. 2451-2457
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Tidskriftsartikel (refereegranskat)abstract
- Phagocytosis and the microbicidal functions of neutrophils require dynamic changes of the actin cytoskeleton. We have investigated the role of gelsolin, a calcium-dependent actin severing and capping protein, in peripheral blood neutrophils from gelsolin-null (Gsn−) mice. The phagocytosis of complement opsonized yeast was only minimally affected. In contrast, phagocytosis of IgG-opsonized yeast was reduced close to background level in Gsn− neutrophils. Thus, gelsolin is essential for efficient IgG- but not complement-mediated phagocytosis. Furthermore, attachment of IgG-opsonized yeast to Gsn− neutrophils was reduced (∼50%) but not to the same extent as ingestion (∼73%). This was not due to reduced surface expression of the Fcγ-receptor or its lateral mobility. This suggests that attachment and ingestion of IgG-opsonized yeast by murine neutrophils are actin-dependent and gelsolin is important for both steps in phagocytosis. We also investigated granule exocytosis and several steps in phagosome processing, namely the formation of actin around the phagosome, translocation of granules, and activation of the NADPH-oxidase. All these functions were normal in Gsn− neutrophils. Thus, the role of gelsolin is specific for IgG-mediated phagocytosis. Our data suggest that gelsolin is part of the molecular machinery that distinguishes complement and IgG-mediated phagocytosis. The latter requires a more dynamic reorganization of the cytoskeleton.
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