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Heparin-based, injectable microcarriers for controlled delivery of interleukin-13 to the brain

2020, Schirmer, Lucas, Hoornaert, ChloƩ, Le Blon, Debbie, Eigel, Dimitri, Neto, Catia, Gumbleton, Mark, Welzel, Petra B., Rosser, Anne E., Werner, Carsten, Ponsaerts, Peter, Newland, Ben

Interleukin-13 (IL-13) drives cells of myeloid origin towards a more anti-inflammatory phenotype, but delivery to the brain remains problematic. Herein, we show that heparin-based cryogel microcarriers load high amounts of IL-13, releasing it slowly. Intra-striatal injection of loaded microcarriers caused local up-regulation of ARG1 in myeloid cells for pro-regenerative immunomodulation in the brain. Ā© 2020 The Royal Society of Chemistry.