Reversibility of T helper 1 and 2 populations is lost after long-term stimulation.

Reversibility of T helper 1 and 2 populations is lost after long-term stimulation.
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DOI:
10.1084/jem.183.3.901
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发表时间:
1996-03-01
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
O'Garra A
O'Garra A
中科院分区:
其他
文献类型:
--
作者:
Murphy E;Shibuya K;Hosken N;Openshaw P;Maino V;Davis K;Murphy K;O'Garra A

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在对病原体的免疫反应过程中形成的T辅助细胞1(Th1)或Th2群体的承诺,或者对过敏原或自身抗原的不适当免疫反应,可能决定了健康和慢性病之间的区别。我们发现,免疫分析评估的强极化Th1和Th2群体是异质性的,使用流式细胞术检测产生干扰素-伽马(干扰素-γ)和白介素4(IL-4)的单个细胞。IL-12加抗IL-4抗体刺激1wk后形成的Th1细胞在IL-4中重新刺激后可转化为Th2细胞。IL-4刺激1wk后产生的Th2细胞在IL-12+抗IL-4刺激下可产生Th1细胞。相反,由IL-12或IL-4反复刺激产生的长期Th1和Th2群体的细胞因子谱似乎更均匀且不可逆,尽管IL-4显著减少了产生干扰素-伽马的Th1细胞的数量。这可能解释了之前关于Th1细胞可以转化为Th2细胞的报道。
Commitment of T helper 1 (Th1) or Th2 populations developing during an immune response to a pathogen, or an inappropriate immune response to an allergen or autoantigen, may determine the difference between health and chronic disease. We show that strongly polarized Th1 and Th2 populations assessed by immunoassay are heterogeneous using flow cytometry to detect single cells producing interferon gamma (IFN-gamma) and interleukin 4 (IL-4). Th1 populations arising after 1 wk of stimulation in IL-12 plus anti-IL-4 antibodies could convert to Th2 cells when restimulated in IL-4. Th2 populations resulting from stimulation for 1 wk in IL-4 could give rise to Th1 cells upon restimulation in IL-12 plus anti-IL-4. In contrast, the cytokine profiles of long-term Th1 and Th2 populations arising originally from repeated stimulation in IL-12 or IL-4 appeared more homogeneous and were not reversible, although IL-4 dramatically reduced the number of IFN-gamma-producing Th1 cells. This may explain previous reports that Th1 cells can be converted to Th2 cells.
重组白介素12治愈感染了利什曼原虫大调的小鼠。
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