Abstract

Mannosylglycerate (MG) is a compatible solute extracted from some red algae and bacteria. Thanks to its ability to protect proteins and stabilise enzymes, MG has been widely studied for its uses against neurodegenerative diseases, and also in biotechnology. More recently, its immunostimulating properties against chronic lymphocytic leukaemia have been investigated. In this paper, we report the synthesis of MG derivatives, and a preliminary biological study on their capacity to behave as immunostimulating agents. We investigated their toxicity against peripheral blood mononuclear cells from healthy donors and their ability to increase the phagocytosis of opsonised bacteria by polynuclear neutrophils. This resulted in the discovery of two new molecules as potential immunostimulating agents.

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