Matysiak Mariola, Stasiołek Mariusz, Orłowski Wojciech, Jurewicz Anna, Janczar Szymon, Raine Cedric S, Selmaj Krzysztof
Department of Neurology, Medical University of Lodz, Lodz, Poland.
J Neuroimmunol. 2008 Jan;193(1-2):12-23. doi: 10.1016/j.jneuroim.2007.07.025.
Syngeneic, pluripotent Lin(-)Sca1(+) bone marrow stem cells (SC), transferred to mice with experimental autoimmune encephalomyelitis, a model of multiple sclerosis, enhanced recovery, prevented relapses and promoted myelin repair. SC-treated mice showed elevated interferon-gamma production and induction of indoleamine 2,3-dioxygenase (IDO) in CD11c(+) dendritic cells (DC). IDO induction was specific since in the presence of IDO-producing CD11c(+) DC, PLP stimulated T cell proliferation was inhibited and the IDO-inhibitor, 1-MT, abrogated the SC effect. Relapse prevention during chronic disease correlated with decreased responsiveness to PLP(178-191) and MBP(85-99). Thus, pluripotent SC induce IDO in DC leading to inhibition of antigen reactivity and spreading in EAE.
同基因多能性Lin(-)Sca1(+)骨髓干细胞(SC)被移植到患有实验性自身免疫性脑脊髓炎(一种多发性硬化症模型)的小鼠体内后,可促进恢复、预防复发并促进髓鞘修复。经SC治疗的小鼠在CD11c(+)树突状细胞(DC)中表现出干扰素-γ产生增加以及吲哚胺2,3-双加氧酶(IDO)的诱导。IDO诱导具有特异性,因为在存在产生IDO的CD11c(+)DC的情况下,PLP刺激的T细胞增殖受到抑制,并且IDO抑制剂1-MT消除了SC的作用。慢性疾病期间的复发预防与对PLP(178-191)和MBP(85-99)的反应性降低相关。因此,多能性SC在DC中诱导IDO,导致在实验性自身免疫性脑脊髓炎中抗原反应性和扩散受到抑制。