Dendritic cells expressing soluble CTLA4Ig prolong antigen‐specific skin graft survival

2010 ◽  
Vol 88 (8) ◽  
pp. 846-850 ◽  
Author(s):  
Francesco L Ierino ◽  
William Mulley ◽  
Natalie Dodge ◽  
Yu Qin Li ◽  
Effie Mouhtouris ◽  
...  
2017 ◽  
Vol 42 (2) ◽  
pp. 455-468 ◽  
Author(s):  
Zhiwei Dong ◽  
Yajie Chen ◽  
Yuan Peng ◽  
Fan Wang ◽  
Zichen Yang ◽  
...  

Background/Aims: Skin transplantation aims to cover skin defects but often fails due to immune rejection of the transplantated tissue. Immature dendritic cells (imDCs) induce immune tolerance but have a low migration rate. After stimulation, imDCs transform into mature DCs, which activate immune rejection. Thus, inducing imDC to obtain a high migration counteracts development of immune tolerance. Methods & Results: We transfected imDCs with a recombinant adenovirus carrying the CCR7 gene (Ad-CCR7) and a small interfering RNA targeting RelB (RelB-siRNA) to concurrently overexpress CCR7 and downregulate RelB expression. Functionally, such cells showed a significantly enhanced migration rate in the chemotactic assay and decreased T-cell proliferation after lipopolysaccharide stimulation in mixed lymphocyte reactions. Cotransfected cells showed an increased ability to induce immune tolerance by upregulating T regulatory (Treg) cells and shifting the Th1/Th2 ratio. Cotransfection of Ad-CCR7 and RelB-siRNA endowed imDCs with resistance to apoptosis and cell death. CCR7 overexpression and RelB knockdown (KD) in imDCs improve skin-graft survival in a murine skin-transplantation model. Conclusion: Transfection with Ad-CCR7 and RelB KD in imDCs may be an effective approach inducing immune tolerance, thus being potentially valuable for inhibiting allograft rejection.


2008 ◽  
Vol 86 (Supplement) ◽  
pp. 508
Author(s):  
F Ierino ◽  
W Mulley ◽  
N Dodge ◽  
Y Q. Li ◽  
D Christiansen ◽  
...  

2017 ◽  
Vol 182 ◽  
pp. 39-49 ◽  
Author(s):  
Ali Moravej ◽  
Bita Geramizadeh ◽  
Negar Azarpira ◽  
Amir-Hassan Zarnani ◽  
Ramin Yaghobi ◽  
...  

2011 ◽  
Vol 412 (7-8) ◽  
pp. 670
Author(s):  
Yi-ming Zhang ◽  
Ya-dong Fang ◽  
Yi-cheng Wang ◽  
Shao-liang Wang ◽  
Ze-yuan Lei ◽  
...  

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