Interleukin-2 and interferon-gamma double knockout mice reject heterotopic cardiac allografts.
Interleukin-2 and interferon-gamma double knockout mice reject heterotopic cardiac allografts.
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白细胞介素-2 和干扰素-γ 双敲除小鼠排斥异位心脏同种异体移植物。
DOI:
10.1097/00007890-200011150-00019
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发表时间:
2000
期刊:
影响因子:
6.2
通讯作者:
Strom,TB
中科院分区:
文献类型:
--
作者:
Zand,MS;Li,Y;Hancock,W;Li,XC;Roy-Chaudhury,P;Zheng,XX;Strom,TB
Background.Several studies suggest that MHC-mismatched allografts reject with a Th1 or Th2 immune response, but these models all have low-level expression of the Th1 cytokines interleukin (IL)-2 and interferon-γ (IFN-γ).%Methods.We interbred mice with single targeted gene disruptions for IL-2 and IFN-γ to establish IL-2+ IFN-γ double knockout (DKO) mice. Heterotopic cardiac allografts from DBA/2j (H2 d) donors were transplanted WT, IL-2 knockout (KO), IFN-γ KO, and DKO recipients (C57BL/6× 129; H2 b). Cytokine transcripts from allografts and DKO splenocytes were analyzed by reverse transcription polymerase chain reaction.Results.DKO mice had a cytokine profile and IgG1/IgG2a isotype ratio characteristic of Th2 deviation. DKO recipients rejected heterotopic cardiac allografts faster than IL-2 KO mice, but significantly slower than WT and IFN-γ KO mice (P< 0.01). Analysis of the rejecting DKO recipients showed intragraft Th2 cytokine expression.Conclusion.The combined absence of IL-2 and IFN-γ in the setting of Th2 deviation does not prevent allograft rejection.