Isolation of a galactomannan that enhances macrophage activation from the edible fungus Morchella esculenta |
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Authors: | Duncan Christine J G Pugh Nirmal Pasco David S Ross Samir A |
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Affiliation: | Department of Pharmacognosy and National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, 38677, USA. |
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Abstract: | The edible mushroom Morchella esculenta is among the most highly prized and morphologically recognizable fungi in the world. We describe the isolation from a polar extract of M. esculenta carpophores of a high-molecular-weight galactomannan, about 1.0 million Da, that exhibits immunostimulatory activity. At 3.0 microg/mL the galactomannan polysaccharide increased NF-kappa B directed luciferase expression in THP-1 human monocytic cells to levels 50% of those achieved by maximal activating concentration (10 microg/mL) of lipopolysaccharide. This galactomannan comprises about 2.0% of the dry fungal material weight, and its glycosyl components include mannose (62.9%) and galactose (20.0%). |
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