Effects of Lipopolysaccharide on the Induction of Mixed Chimerism in Cyclophosphamide‐Induced Tolerance
Effects of Lipopolysaccharide on the Induction of Mixed Chimerism in Cyclophosphamide‐Induced Tolerance
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脂多糖对环磷酰胺诱导的耐受性中混合嵌合体诱导的影响
DOI:
10.1111/j.1365-3083.2009.02314.x
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发表时间:
2009
影响因子:
3.7
通讯作者:
Ryuji Tominaga
中科院分区:
文献类型:
--
作者:
T. Onzuka;Y. Tomita;I. Shimizu;Shinji Okano;H. Yamada;Y. Yoshikai;Ryuji Tominaga
Cyclophosphamide (CP)‐induced tolerance is a mixed chimerism‐based tolerance and is one of the strategies used to induce transplant tolerance. Toll‐like receptor (TLR) agonists are reportedly able to abrogate the induction of tolerance by activating alloreactive T cells, or by inhibiting Treg cells. However, little is known about the effect of the immune response mediated by TLR on mixed chimerism‐based tolerance protocols. In this study, we evaluated the influence of lipopolysaccharide (LPS), which is best known as an TLR4 agonist, on CP‐induced tolerance. BALB/c (H‐2d) mice received a conditioning regimen consisting of 108 donor DBA/2 (H‐2d) spleen cells (SC) on day 0 and 200 mg/kg CP on day 2. A single dose of 20 μg LPS was injected on day −2, 0, 7, or 35. Our results showed that LPS infusion at any time point resulted in chronic rejection of donor skin grafts and the abrogation of mixed chimerism in 33–60% of recipients. We found a correlation between skin graft acceptance and higher levels of mixed chimerism. Flow cytometric analysis revealed that donor‐reactive T cells were permanently eliminated, regardless of LPS infusion. In conclusion, LPS‐infusion had little influence on the immune response of donor‐reactive T cells, but had a significant effect on the induction and maintenance of mixed chimerism in CP‐induced tolerance.
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DOI:
10.1172/jci17573
发表时间:
2003-05
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
D. Goldstein;B. Tesar;S. Akira;Fadi G Lakkis
通讯作者:
D. Goldstein;B. Tesar;S. Akira;Fadi G Lakkis
影响因子:
158.5
作者:
Kawai, Tatsuo;Cosimi, A. Benedict;Sachs, David H.
通讯作者:
Sachs, David H.
DOI:
--
发表时间:
1994
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Tomita,Y;Khan,A;Sykes,M
通讯作者:
Sykes,M
影响因子:
20.3
作者:
Jansen, PM;Pixley, RA;Colman, RW
通讯作者:
Colman, RW
DOI:
10.1006/viro.2000.0278
发表时间:
2000
期刊:
Virology.
影响因子:
--
作者:
Welsh,RM;McNally,JM;Brehm,MA;Selin,LK
通讯作者:
Selin,LK