Phospholipids and reactive nitrogen intermediates collaborate in expression of the T cell mitogenesis‐inhibitory activity of immunosuppressive macrophages induced in mycobacterial infection

Phospholipids and reactive nitrogen intermediates collaborate in expression of the T cell mitogenesis‐inhibitory activity of immunosuppressive macrophages induced in mycobacterial infection
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磷脂和活性氮中间体协同表达分枝杆菌感染诱导的免疫抑制巨噬细胞的 T 细胞有丝分裂抑制活性

DOI:
10.1046/j.1365-2249.1996.d01-614.x
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发表时间:
1996
影响因子:
4.6
通讯作者:
W. Maw
W. Maw
中科院分区:
医学3区
文献类型:
--
作者:
H. Tomioka;T. Kishimoto;W. Maw

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我们研究了磷脂和一氧化氮在小鼠中由鸟分枝杆菌胞内复合体感染诱导的脾巨噬细胞(MAIC诱导的巨噬细胞)表达抑制活性中对伴刀豆球蛋白A(Con A)刺激的脾细胞(SPC)的促有丝分裂反应的作用,如下所示。首先,发现磷脂酰丝氨酸(PS)和磷脂酰肌醇通过抑制IL-2的产生和在Con A刺激的T细胞中获得IL-2反应性来抑制Con A诱导的SPC有丝分裂。当SPC在弱酸性条件(pH 6.3)下培养时,PS的有丝分裂抑制活性增加。 当SPC与PS预处理24小时之前,Con A的囊胚,他们的促有丝分裂反应是不可逆的废除。 第二,发现NG-单甲基-L-精氨酸(一氧化氮(NO)合酶的抑制剂)部分减弱MAIC诱导的巨噬细胞抑制活性的表达。第三,活性氮中间体(RNI)包括酸化NO−2产生的NO对SPC促有丝分裂反应产生了强有力的抑制活性,RNI的抑制活性与PS的组合显着增强。这些发现表明,磷脂和RNI作为效应分子在MAIC诱导的巨噬细胞的抑制活性表达中发挥重要作用。
We studied the role of phospholipids and nitric oxide in expression of the suppressor activity of splenic macrophages induced by Mycobacterium avium‐intracellulare complex infection (MAIC‐induced macrophages) in mice against mitogenic response of concanavalin A (Con A)‐stimulated splenocytes (SPC) as follows. First, phosphatidylserine (PS) and phosphatidylinositol were found to suppress Con A‐induced mitogenesis of SPC via inhibition of IL‐2 production and acquisition of IL‐2 reactivity in Con A‐stimulated T cells. The mitogenesis‐inhibitory activity of PS was increased when SPC were cultured under mildly acidic condition (pH 6.3). When SPC were pretreated with PS for 24 h prior to Con A blastogenesis, their mitogenic response was irreversibly abrogated. Second, NG‐monomethyl‐l‐arginine, an inhibitor of nitric oxide (NO) synthase, was found to attenuate in part the expression of the suppressor activity of MAIC‐induced macrophages. Third, reactive nitrogen intermediates (RNI) including NO generated from acidified NO−2 exerted potent inhibitory activity against SPC mitogenic response, and the suppressive activity of RNI was significantly augmented by the combination with PS. These findings indicate that phospholipids and RNI play an important role in the expression of suppressor activity of MAIC‐induced macrophages as the effector molecules.
巨噬细胞衍生的一氧化氮参与体内注射吗啡的大鼠脾淋巴细胞的伴刀豆球蛋白 A 反应性降低。
DOI: --
发表时间: 1994
期刊: Journal of immunology (Baltimore, Md. : 1950)
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发表时间: 1986
期刊: Journal of immunology (Baltimore, Md. : 1950)
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DOI: --
发表时间: 1986
期刊: Journal of immunology (Baltimore, Md. : 1950)
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DOI: 10.1165/ajrcmb/4.3.287
发表时间: 1991
影响因子: 6.4
作者:
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通讯作者: Ellner,JJ
人肺泡巨噬细胞对 T 淋巴细胞对植物血凝素反应的抑制功能的表征:细胞选择性、可逆性和 T 细胞激活的早期事件。
DOI: 10.1165/ajrcmb/8.1.89
发表时间: 1993
影响因子: 6.4
作者:
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