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Degalactosylation of xyloglucans modify their pro-inflammatory properties on murine peritoneal macrophages.
International Journal of Biological Macromolecules 2017 December
Considering the potential applications of partially degalactosylated xyloglucans as a drug delivery vehicle and reconstruction of tissues, the aim of this study was to investigate whether degalactosylated xyloglucans are immunologically active. The effects of the degalactosylated xyloglucan from seeds of Copaifera langsdorffii (XGCd), Hymenaea courbaril (XGJd), and Tamarindus indica (XGTd) on murine peritoneal macrophages in vitro were evaluated. XGCd, XGJd, and XGTd stimulated NO production in a dose-dependent manner reaching ∼280% for XGTd at 50μg/mL. Regarding cytokines production, XGJd at 50μg/mL increased IL-1β level by ∼100% and XGCd (10μg/mL) enhanced IL-6 level by 40%. At 10μg/mL, XGTd increased TNF- α and IL-1β levels by 104 and 2370%, respectively, as compared to the control group. For IL-6, XGTd enhanced this cytokine production by 80% at all concentrations tested. XGTd exhibited the most intensive effects on the production of pro-inflammatory mediators by peritoneal macrophages. All degalactosylated xyloglucans evaluated showed not to be biologically inert. Thus, this finding is relevant for groups that are investigating the use of degalactosylated xyloglucan from T. indica for drug delivery and reconstruction of tissues. The effects observed could contribute to potentiate the immune system against infections or toxicity to tumor cells.
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