TLDR

Science describes the CD1 system as responding to lipids rather than proteins. CD1 proteins display pathogen lipids to T cells, driving protective immune responses, but some lipids can also trigger skin inflammation. Science says the system could be key to better vaccines and cancer therapies, and links it to reactions to bee stings and bacteria, and possibly poison ivy.

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A little-known immune pathway could be key to better vaccines and cancer therapies

Science says CD1 proteins display pathogen lipids to T cells but can also trigger skin inflammation.

1 Source, 56m ago, first seen 56m ago

Illustration of an immune reaction to urushiol. The first panel shows an inflammatory rash on hands and forearms. An inset illustration shows a zoomed-in view of a T cell and an antigen-presenting cell making contact, while surrounded by smaller lipid molcules. Another inset zooms in on the contact between the cells, showing how a lipid fits into the CD1 protein on the antigen-presenting cell. A T cell receptor can be triggered by touching CD1 and the lipid it holds, but sometimes the lipid is hidden due to where it sits in the protein, so only CD1 makes contact.

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1 Source, first seen 56m ago

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