The carbohydrate polymers known as beta-1,3-d-glucans exert potent effects on the immune system – stimulating antitumour and antimicrobial activity, for example – by binding to receptors on macrophages and other white blood cells and activating them. Although beta-glucans are known to bind to receptors, such as complement receptor 3 (ref. 1), there is evidence that another beta-glucan receptor is present on macrophages. Here we identify this unknown receptor as dectin-1 (ref. 2), a finding that provides new insights into the innate immune recognition of beta-glucans.
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Investigation of beta-glucans binding to human/mouse dectin-1 and associated immunomodulatory effects on two monocyte/macrophage cell lines.
This landmark 2001 paper in Nature by Brown and Gordon reported the discovery of Dectin-1, a novel innate immune receptor specifically recognizing beta-glucans.
Dectin-1 was identified as a C-type lectin receptor on macrophages and dendritic cells that specifically binds β-1,3-d-glucans. This receptor triggers phagocytosis, oxidative burst, and cytokine production upon glucan recognition. The discovery explained the long-observed immunostimulatory effects of beta-glucans and identified the molecular basis for innate immune recognition of fungi.
The discovery of Dectin-1 is foundational to all beta glucan immunology research. It explains precisely how Aureobasidium pullulans-derived β-1,3/1,6-glucan activates human immune cells — through direct Dectin-1 receptor binding on macrophages, dendritic cells, and neutrophils.
AI-generated summary for accessibility. Always refer to the original paper.
Brown GD; Gordon S. Immune recognition. A new receptor for beta-glucans. Nature Immunology. 2001. DOI: 10.3410/f.1000359.9911.
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