scholarly journals Direct interaction between cholera toxin and dendritic cells is required for oral adjuvant activity

2013 ◽  
Vol 43 (7) ◽  
pp. 1779-1788 ◽  
Author(s):  
Tobias Gustafsson ◽  
Yeu-Jiann Hua ◽  
Madelene W. Dahlgren ◽  
Megan Livingston ◽  
Bengt Johansson-Lindbom ◽  
...  
2001 ◽  
Vol 166 (3) ◽  
pp. 1885-1893 ◽  
Author(s):  
Lakshmi Krishnan ◽  
Subash Sad ◽  
Girishchandra B. Patel ◽  
G. Dennis Sprott

2014 ◽  
Vol 6 (235) ◽  
pp. 235ra61-235ra61 ◽  
Author(s):  
B. Gungor ◽  
F. C. Yagci ◽  
G. Tincer ◽  
B. Bayyurt ◽  
E. Alpdundar ◽  
...  

2005 ◽  
Vol 175 (8) ◽  
pp. 5192-5202 ◽  
Author(s):  
Dubravka Grdic ◽  
Lena Ekman ◽  
Karin Schön ◽  
Kristina Lindgren ◽  
Johan Mattsson ◽  
...  

2005 ◽  
Vol 73 (1) ◽  
pp. 413-421 ◽  
Author(s):  
Kenneth C. Bagley ◽  
Sayed F. Abdelwahab ◽  
Robert G. Tuskan ◽  
George K. Lewis

ABSTRACT Pasteurella multocida toxin (PMT) is a potent mitogen for fibroblasts and osteoblastic cells. PMT activates phospholipase C-β through Gqα, and the activation of this pathway is responsible for its mitogenic activity. Here, we investigated the effects of PMT on human monocyte-derived dendritic cells (MDDC) in vitro and show a novel activity for PMT. In this regard, PMT activates MDDC to mature in a dose-dependent manner through the activation of phospholipase C and subsequent mobilization of calcium. This activation was accompanied by enhanced stimulation of naïve alloreactive T cells and dominant inhibition of interleukin-12 production in the presence of saturating concentrations of lipopolysaccharide. Surprisingly, although PMT mimics the activating effects of cholera toxin on human MDDC and mouse bone marrow-derived dendritic cells, we found that PMT is not a mucosal adjuvant and that it suppresses the adjuvant effects of cholera toxin in mice. Together, these results indicate discordant effects for PMT in vitro compared to those in vivo.


Vaccine ◽  
2003 ◽  
Vol 21 (21-22) ◽  
pp. 3019-3029 ◽  
Author(s):  
Hongxun Sang ◽  
Vladimir M. Pisarev ◽  
Corey Munger ◽  
Simon Robinson ◽  
Jennifer Chavez ◽  
...  

PLoS ONE ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. e59822 ◽  
Author(s):  
Anouk K. Gloudemans ◽  
Maud Plantinga ◽  
Martin Guilliams ◽  
Monique A. Willart ◽  
Arifa Ozir-Fazalalikhan ◽  
...  

2008 ◽  
Vol 84 (1) ◽  
pp. 199-206 ◽  
Author(s):  
Barbara Valentinis ◽  
Annalisa Capobianco ◽  
Francesca Esposito ◽  
Alessandro Bianchi ◽  
Patrizia Rovere-Querini ◽  
...  

2021 ◽  
Vol 12 ◽  
Author(s):  
Wenzhong Zheng ◽  
Shiqiang Zhang ◽  
Xiaobao Chen ◽  
Shaoqin Jiang ◽  
Zhihao Li ◽  
...  

Chronic inflammation of the male genital tract is thought to be a primary etiological factor of male infertility. The abundance and activation of macrophages and dendritic cells in patients with chronic inflammation of genital tract were closely associated with oligozoospermia and asthenospermia. Chronic epididymitis appears to be more important than seminal vesiculitis or prostatitis due to the direct interaction between spermatozoa and epididymal inflammatory cells. In this study, we present a case report of a 41-year-old male with oligoasthenospermia and chronic epididymitis. Hematoxylin-eosin staining and immunofluorescence analyses showed that antigen presenting cells including macrophages and dendritic cells were found capturing spermatozoa in the lumen of cauda epididymis. To our knowledge, this is the first case report that directly observed dendritic cells capturing spermatozoa in the lumen of an inflamed epididymis. This finding directly explains chronic epididymitis as the possible cause of oligospermia in patients.


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