Functional characterization of mouse spinal cord infiltrating CD8+ lymphocytes.

Functional characterization of mouse spinal cord infiltrating CD8+ lymphocytes.
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小鼠脊髓浸润CD8+淋巴细胞的功能表征。

DOI:
10.1016/j.jneuroim.2009.06.013
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发表时间:
2009-09-29
影响因子:
3.3
通讯作者:
Howe CL
Howe CL
中科院分区:
医学4区
文献类型:
--
作者:
Deb C;Howe CL

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了解中枢神经系统神经免疫性疾病的免疫发病机制需要一种强有力的方法来分离和表征动物模型中浸润脊髓的免疫效应细胞。我们已经开发了一种简单快速的分离方法,该方法从单个脱髓鞘脊髓中产生高产量的脊髓浸润性白细胞,并保持关键免疫表型抗原的高表面表达。使用这种方法和Theiler病毒慢性脱髓鞘模型,我们报告了脊髓浸润急性效应CD 8+淋巴细胞(CD 45 hiCD 44 loCD 62 L-)和脊髓浸润靶效应记忆CD 8+淋巴细胞(CD 45 hiCD 44 hiCD 62 L-)的存在。这些细胞通过产生干扰素γ对离体刺激产生强烈响应,但在细胞毒性测定中对泰勒病毒不表现出特异性。我们的结论是,在慢性脊髓脱髓鞘小鼠模型中,靶源性淋巴细胞可能具有独特的功能特异性。
Understanding the immunopathogenesis of neuroimmunological diseases of the CNS requires a robust method for isolating and characterizing the immune effector cells that infiltrate the spinal cord in animal models. We have developed a simple and rapid isolation method that produces high yields of spinal cord infiltrating leukocytes from a single demyelinated spinal cord and which maintains high surface expression of key immunophenotyping antigens. Using this method and the Theiler’s virus model of chronic demyelination, we report the presence of spinal cord infiltrating acute effector CD8+ lymphocytes that are CD45hiCD44loCD62L− and a population of spinal cord infiltrating target effector memory CD8+ lymphocytes that are CD45hiCD44hiCD62L−. These cells respond robustly to ex vivo stimulation by producing interferon γ but do not exhibit specificity for Theiler’s virus in a cytotoxicity assay. We conclude that target-derived lymphocytes in a mouse model of chronic spinal cord demyelination may have unique functional specificities.
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