TLR Signalling and the Function of Dendritic Cells

2005 ◽  
pp. 120-135 ◽  
Author(s):  
Hiroaki Hemmi ◽  
Shizuo Akira
Keyword(s):  
Dendritic Cells ◽  
Tlr Signalling

scholarly journals Targeting human Plasmacytoid dendritic cells through BDCA2 prevents inflammation and fibrosis in xenotransplant mouse model of Scleroderma

2020 ◽  
Author(s):  
Rebecca L. Ross ◽  
Clarissa Corinaldesi ◽  
Gemma Migneco ◽  
Ian Carr ◽  
Agne Antanaviciute ◽  
...  
Keyword(s):  
Dendritic Cells ◽  
Skin Inflammation ◽  
Plasmacytoid Dendritic Cells ◽  
Preclinical Models ◽  
Fibrotic Response ◽  
Inhibitory Type ◽  
Immunocompromised Mice ◽  
Tlr Signalling

AbstractPlasmacytoid dendritic cells (pDC) have been implicated in the pathogenesis of Scleroderma (SSc) through their ability to infiltrate the skin and secrete interferons (IFN) and proinflammatory chemokines. Blood Dendritic Cells Antigen 2 (BDCA2) is an inhibitory type II C-type lectin expressed by human pDC. Here we determined the effects of BDCA2 internalisation on pDC mediated skin inflammation and fibrosis in human preclinical models of skin inflammation and fibrosis in vitro and in vivo. BDCA2 targeting reversed TLR-signalling induced transcriptome and differentiation of pDC and suppressed their ability to induce IFN response in organotypic 3D human skin cultures in vitro. In vivo, xenotransplantation of human pDC into immunocompromised mice (XenoSCID) significantly increased IFN induced responses to topical TLR7/9 agonist and separately enhanced the fibrotic response to bleomycin. Targeting of BDCA2 strongly suppressed both of these pathological responses ameliorating skin inflammation and fibrosis. Together, these preclinical data strongly support the notion that human pDC play a key role in immune driven skin fibrosis, which can be effectively blocked by targeting BDCA2.

TLR signalling regulated antigen presentation in dendritic cells

2010 ◽  
Vol 22 (1) ◽  
pp. 124-130 ◽  
Author(s):  
Colin Watts ◽  
Michele A West ◽  
Rossana Zaru
Keyword(s):  
Dendritic Cells ◽  
Antigen Presentation ◽  
Tlr Signalling

Dendritic cells of the human epidermis: immuno-electron microscopic studies of la antigen reactivity

1978 ◽  
Vol 36 (2) ◽  
pp. 644-645
Author(s):  
G. Rowden ◽  
M. G. Lewis ◽  
T. M. Phillips
Keyword(s):  
Dendritic Cells ◽  
Langerhans Cells ◽  
Cell Types ◽  
Cell Type ◽  
Electron Microscopic ◽  
La Antigen ◽  
Microscopic Studies ◽  
A Cell ◽  
C3 Receptors ◽  
Antigen Reactivity

Langerhans cells of mammalian stratified squamous epithelial have proven to be an enigma since their discovery in 1868. These dendritic suprabasal cells have been considered as related to melanocytes either as effete cells, or as post divisional products. Although grafting experiments seemed to demonstrate the independence of the cell types, much confusion still exists. The presence in the epidermis of a cell type with morphological features seemingly shared by melanocytes and Langerhans cells has been especially troublesome. This so called "indeterminate", or " -dendritic cell" lacks both Langerhans cells granules and melanosomes, yet it is clearly not a keratinocyte. Suggestions have been made that it is related to either Langerhans cells or melanocyte. Recent studies have unequivocally demonstrated that Langerhans cells are independent cells with immune function. They display Fc and C3 receptors on their surface as well as la (immune region associated) antigens.

Human PMNs are phagocytosed by dendritic cells and interfere with DCs maturation: a new link between innate and acquired immunity

2010 ◽  
Vol 34 (8) ◽  
pp. S72-S72
Author(s):  
Qi Xu ◽  
Xiumin Ma ◽  
Yuejie Zhu ◽  
Fengsen Li ◽  
Jianbing Ding
Keyword(s):  
Dendritic Cells ◽  
Acquired Immunity ◽  
Human Pmns

Generation of functionally mature dendritic cells from the multipotential stem cell line FDCP-mix

2000 ◽  
Vol 111 (3) ◽  
pp. 890-897 ◽  
Author(s):  
Timm Schroeder ◽  
Claudia Lange ◽  
John Strehl ◽  
Ursula Just
Keyword(s):  
Dendritic Cells ◽  
Stem Cell ◽  
Cell Line ◽  
Stem Cell Line

In situ demonstration of migration of dendritic cells released from rat small intestine to mesenteric lymph nodes

2001 ◽  
Vol 120 (5) ◽  
pp. A183-A183
Author(s):  
H KOBAYASHI ◽  
H NAGATA ◽  
S MIURA ◽  
T AZUMA ◽  
H SUZUKI ◽  
...  
Keyword(s):  
Dendritic Cells ◽  
Small Intestine ◽  
Lymph Nodes ◽  
Rat Small Intestine ◽  
Mesenteric Lymph Nodes ◽  
Mesenteric Lymph
Sign in / Sign up

Export Citation Format

Share Document