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首页> 外文期刊>Cellular immunology >CD4(+) CD44(v.low) cells are unique peripheral precursors that are distinct from recent thymic emigrants and stem cell-like memory cells
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CD4(+) CD44(v.low) cells are unique peripheral precursors that are distinct from recent thymic emigrants and stem cell-like memory cells

机译:CD4(+)CD44(v.low)细胞是独特的外周前体,与最近的胸腺迁徙和干细胞样记忆细胞不同

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摘要

CD4(+) CD44(v.low) cells are peripheral precursor T cells that inhibit lymphopenia by generating a large CD4(+) T cell pool containing balanced numbers of nave, memory, and regulatory Foxp3(+) cells with a diverse TCR repertoire. Recent thymic emigrants (RTE) and stem cell-like memory T cells (T-SCM) can also replenish a T cell pool. In this study we formally test whether CD44(v.low) cells are the same population as RTE and T-SCM. Our data show that, in contrast to RTE, CD44(v.low) cells express high levels of CD45RB and low levels of CD24. Moreover, CD44(v.low) cells isolated from mice devoid of RTE retain their capacity to repopulate lymphopenic mice with naive and memory cells and Foxp3(+) Tregs. In addition, CD44(v.low) cells do not express IL-2R beta, Sca-1, and CXCR3, the phenotypic hallmarks of T-SCM. Overall, these data demonstrate that CD44(v.low) cells are neither RTE nor T-SCM. (C) 2015 Elsevier Inc. All rights reserved.
机译:CD4(+)CD44(v.low)细胞是外周前体T细胞,可通过产生大量CD4(+)T细胞池来抑制淋巴细胞减少,其中CD4(+)T细胞池包含平衡数目的中殿,记忆和调节性Foxp3(+)细胞,并具有多种TCR组成。最近的胸腺迁徙者(RTE)和干细胞样记忆T细胞(T-SCM)也可以补充T细胞库。在这项研究中,我们正式测试CD44(v.low)细胞是否与RTE和T-SCM处于同一种群。我们的数据表明,与RTE相反,CD44(v.low)细胞表达高水平的CD45RB和低水平的CD24。此外,从没有RTE的小鼠中分离出的CD44(v.low)细胞保留了用幼稚和记忆细胞以及Foxp3(+)Tregs重新填充淋巴细胞减少小鼠的能力。此外,CD44(v.low)细胞不表达IL-2R beta,Sca-1和CXCR3,这是T-SCM的表型特征。总体而言,这些数据表明CD44(v.low)细胞既不是RTE也不是T-SCM。 (C)2015 Elsevier Inc.保留所有权利。

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