Journal
JOURNAL OF EXPERIMENTAL MEDICINE
Volume 206, Issue 11, Pages 2455-2467Publisher
ROCKEFELLER UNIV PRESS
DOI: 10.1084/jem.20090805
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Funding
- National Institutes of Health
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During infection, signals from the periphery are known to reach draining lymph nodes (DLNs), but how these molecules, such as inflammatory cytokines, traverse the significant distances involved without dilution or degradation remains unclear. We show that peripheral mast cells, upon activation, release stable submicrometer heparin-based particles containing tumor necrosis factor and other proteins. These complexes enter lymphatic vessels and rapidly traffic to the DLNs. This physiological drug delivery system facilitates communication between peripheral sites of inflammation and remote secondary lymphoid tissues.
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