Life cycle, migration and antigen presenting functions of spleen and lymph node dendritic cells: Limitations of the Langerhans cells paradigm
Details
Publication Year 2005-08,Volume 17,Issue #4,Page 262-272
Journal Title
SEMINARS IN IMMUNOLOGY
Publication Type
Journal Article
Abstract
The phenotypic and functional studies carried out in recent years on dendritic cells (DC) purified from spleen and lymph nodes has revealed the existence of heterogeneous populations with distinct life cycles, migratory properties and antigen presenting functions. A major subdivision can be made between "tissue derived" DC that migrate to the lymph nodes from peripheral tissues, both in the steady state and in the course of infections, and "blood-derived" DC, which reside in the spleen and lymph nodes throughout their life cycle. These two groups of DC can be subdivided into smaller subsets. The tissue-derived and the blood-derived DC also show fundamental differences in maturational status and antigen presenting capabilities. In this review, we summarize the roles played by the different DC types in the steady state and during pathogen infections, relating those roles to maintenance of peripheral tolerance and the induction of immunity. We point out the caveats of assuming that the DC that collect antigens are the ones involved in their presentation, emphasizing the phenomenon of antigen transfer as an important component of the immune response. (c) 2005 Elsevier Ltd. All rights reserved.
Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
Keywords
CD4 T-CELLS; COLONY-STIMULATING FACTOR; TUMOR-NECROSIS-FACTOR; IN-VIVO; CROSS-PRESENTATION; STEADY-STATE; LEISHMANIA-MAJOR; EPITHELIAL-CELLS; SOLUBLE-ANTIGEN; SELF-TOLERANCE
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Creation Date: 2005-08-01 12:00:00
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