Programmed death ligand 1 is over-expressed by neutrophils in the blood of patients with active tuberculosis.

Programmed death ligand 1 is over-expressed by neutrophils in the blood of patients with active tuberculosis.
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DOI:
10.1002/eji.201141421
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发表时间:
2011-07
影响因子:
5.4
通讯作者:
O'Garra, Anne
O'Garra, Anne
中科院分区:
医学3区
文献类型:
--
作者:
McNab, Finlay W.;Berry, Matthew P. R.;Graham, Christine M.;Bloch, Susannah A. A.;Oni, Tolu;Wilkinson, Katalin A.;Wilkinson, Robert J.;Kon, Onn M.;Banchereau, Jacques;Chaussabel, Damien;O'Garra, Anne

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由结核分枝杆菌(Mycobacterium tuberculosis,Mtb)引起的结核病(tuberculosis,TB)仍然是世界上最大的传染病问题之一。尽管进行了数十年的深入研究,但对Mtb的免疫反应并不完全,反映了病原体和宿主之间极其复杂的相互作用。因此,可能改变宿主保护和发病机制之间的平衡的途径引起了极大的兴趣。显示在慢性感染(包括TB)的发病机制中起作用的一种途径是程序性死亡-1(PD-1)途径。我们在这里表明,与PD-1相互作用的程序性死亡配体1(PD-L1)的表达在活动性TB患者的全血中与健康对照或Mtb暴露个体的全血相比有所增加,并且中性粒细胞的表达在很大程度上是这种增加的原因。
Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), remains one of the world's largest infectious disease problems. Despite decades of intensive study, the immune response to Mtb is incompletely characterised, reflecting the extremely complex interaction between pathogen and host. Pathways that may alter the balance between host protection and pathogenesis are therefore of great interest. One pathway shown to play a role in the pathogenesis of chronic infections, including TB, is the programmed death-1 (PD-1) pathway. We show here that the expression of the programmed death ligand 1 (PD-L1), which interacts with PD-1, is increased in whole blood from active TB patients compared with whole blood from healthy controls or Mtb-exposed individuals, and that expression by neutrophils is largely responsible for this increase.
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