Abstract:
:The lone CX3C chemokine, fractalkine (FK), is expressed in a membrane-bound form on activated endothelial cells and mediates attachment and firm adhesion of T cells, monocytes and NK cells. We now show that FK is associated with dendritic cells (DC) in epidermis and lymphoid organs. In normal human skin, dual-color fluorescence microscopy co-localized FK expression with Langerhans cells expressing CD1a. In tonsil, FK-positive DC expressed CD83, a marker for mature DC. Human and murine cultured DC up-regulated FK mRNA expression with maturation. Furthermore, CD40 ligation, but not TNF-alpha or lipopolysaccharide treatment, of activated, migratory DC that had migrated from skin explants resulted in a 2.5-fold increase of surface expression of FK without significant alterations of expression of CD80, CD86, CD54 or MHC class II. Since FK mediates adhesion of T cells to activated endothelial cells, the increased expression of FK during DC maturation (and particularly by CD40 ligation) may play a role in the ability of T cells and mature DC to form conjugates and engage in cell-cell communication.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Papadopoulos EJ,Sassetti C,Saeki H,Yamada N,Kawamura T,Fitzhugh DJ,Saraf MA,Schall T,Blauvelt A,Rosen SD,Hwang STdoi
10.1002/(SICI)1521-4141(199908)29:08<2551::AID-IMMkeywords:
subject
Has Abstractpub_date
1999-08-01 00:00:00pages
2551-9issue
8eissn
0014-2980issn
1521-4141journal_volume
29pub_type
杂志文章abstract::Interleukin-12 family cytokines have emerged as critical regulators of immunity with some members (IL-12, IL-23) associated with disease pathogenesis while others (IL-27, IL-35) mitigate autoimmune diseases. Each IL-12 family member is comprised of an α and a β chain, and chain-sharing is a key feature. Although four ...
journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 临床试验,杂志文章
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
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pub_type: 杂志文章
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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doi:10.1002/eji.1830160313
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journal_title:European journal of immunology
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doi:10.1002/eji.1830151015
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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