Downregulation of microglial keratan sulfate proteoglycans coincident with lymphomonocytic infiltration of the rat central nervous system.

Downregulation of microglial keratan sulfate proteoglycans coincident with lymphomonocytic infiltration of the rat central nervous system.
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小胶质细胞硫酸角质素蛋白聚糖的下调与大鼠中枢神经系统的淋巴细胞浸润一致。

DOI:
--
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发表时间:
1996
影响因子:
6
通讯作者:
Guido Stoll
Guido Stoll
中科院分区:
医学2区
文献类型:
--
作者:
S. Jander;Guido Stoll

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针对牛软骨蛋白聚糖硫酸角质素(KS)表位的单克隆抗体(MAb)5D 4对大鼠大脑中的分支小胶质细胞进行染色。在这项研究中,我们发现,5D4阳性小胶质细胞是丰富的正常大鼠脊髓和几乎缺席的活动期和恢复期的实验性自身免疫性脑脊髓炎(EAE)在髓鞘免疫刘易斯大鼠。相反,在沃勒变性的视神经KS免疫反应性小胶质细胞的密度保持不变。KS免疫反应是缺席正常和横断坐骨神经,脊神经根。在脊髓提取物的免疫印迹上,MAb 5D4染色一种新型的KS蛋白聚糖(KSPGs),其表观分子量主要在140和200 kd之间,其在急性EAE中显著减少。我们的数据表明,高水平的KSPG表达与神经系统中常驻巨噬细胞的免疫表型下调相关。周围神经中缺乏可检测的KS表明外周和中枢神经系统中骨髓源性驻留巨噬细胞的分化不同,并且可能部分解释了外周神经系统中巨噬细胞对轴突损伤的快速反应。小胶质细胞KSPG的下调可能是中枢神经系统快速炎症反应的先决条件。
The monoclonal antibody (MAb) 5D4 against a keratan sulfate (KS) epitope of bovine cartilage proteoglycan stains ramified microglia in the rat brain. In this study we show that 5D4-positive microglia is abundant in the normal rat spinal cord and nearly absent during both the active and recovery phase of experimental autoimmune encephalomyelitis (EAE) in myelin-immunized Lewis rats. In contrast, during Wallerian degeneration of the optic nerve the density of KS-immunoreactive microglia remains constant. KS immunoreactivity is absent from both normal and transected sciatic nerves, and spinal nerve roots. On immunoblots of spinal cord extracts MAb 5D4 stains a novel type of KS proteoglycans (KSPGs) with an apparent molecular weight mainly between 140 and 200 kd, which significantly decrease in acute EAE. Our data suggest that high levels of KSPG expression correlate to a downregulated immunophenotype of resident macrophages in the nervous system. The lack of detectable KS in peripheral nerve points to a divergent differentiation of bone marrow-derived resident macrophages in the peripheral and central nervous systems and may partially account for the rapid macrophage response to axonal injury in the peripheral nervous system. Downregulation of microglial KSPG could be a prerequisite for a rapid inflammatory response in the central nervous system.
DOI: --
发表时间: 1983
期刊: The Journal of biological chemistry
影响因子: --
作者:
Caterson,B;Christner,JE;Baker,JR
通讯作者: Baker,JR
DOI: 10.1016/s0021-9258(18)98755-7
发表时间: 1991-08
期刊: The Journal of biological chemistry
影响因子: --
作者:
U. Rauch;P. Gao;A. Janetzko;A. Flaccus;Lutz G. W. Hilgenberg;H. Tekotte;R. Margolis;R. U. Margolis
通讯作者: U. Rauch;P. Gao;A. Janetzko;A. Flaccus;Lutz G. W. Hilgenberg;H. Tekotte;R. Margolis;R. U. Margolis
细胞调节中的蛋白多糖。
DOI: --
发表时间: 1989
期刊: The Journal of biological chemistry
影响因子: --
作者:
Ruoslahti,E
通讯作者: Ruoslahti,E
DOI: --
发表时间: 1993
期刊: Laboratory investigation; a journal of technical methods and pathology
影响因子: --
作者:
Vass,K;Hickey,WF;Schmidt,RE;Lassmann,H
通讯作者: Lassmann,H