A Milieu Molecule for TGF-β Required for Microglia Function in the Nervous System.

A Milieu Molecule for TGF-β Required for Microglia Function in the Nervous System.
复制标题

DOI:
10.1016/j.cell.2018.05.027
复制
发表时间:
2018-06-28
期刊:
影响因子:
64.5
通讯作者:
Springer TA
Springer TA
中科院分区:
生物学1区
文献类型:
--
作者:
Qin Y;Garrison BS;Ma W;Wang R;Jiang A;Li J;Mistry M;Bronson RT;Santoro D;Franco C;Robinton DA;Stevens B;Rossi DJ;Lu C;Springer TA

文献摘要

参考文献

被引文献

相似文献

细胞外的proTGF-β与基质或细胞表面的“环境”分子共价连接,并潜伏直到TGF-β被整合素释放。本研究表明,小胶质细胞表面的LRRC33作为一种环境分子发挥作用,并能够高度定位,整合素α v β8依赖性TGF-β激活。Lrrc33 - / -小鼠缺乏与TGF-β激活整合素缺乏相关的中枢神经系统血管异常,但具有反应性表型的小胶质细胞,2个月后出现上升性麻痹,髓鞘轴突缺失,5个月死亡。全骨髓移植导致带有WT小胶质细胞的Lrrc33−/−脑的选择性再生,并阻止疾病进展。同一脑内WT和Lrrc33−/−小胶质细胞的表型表明,TGF-β从一个小胶质细胞向邻近的小胶质细胞扩散的可能性很小。我们的研究结果表明,整合素细胞和环境分子相关TGF-β细胞之间的相互作用提供了TGF-β的局部和选择性激活。
Extracellular proTGF-β is covalently linked to “milieu” molecules in the matrix or on cell surfaces and is latent until TGF-β is released by integrins. Here we show that LRRC33 on the surface of microglia functions as a milieu molecule and enables highly localized, integrin αVβ8-dependent TGF-β activation. Lrrc33−/− mice lack CNS vascular abnormalities associated with deficiency in TGF-β activating integrins, but have microglia with a reactive phenotype and after 2 months develop ascending paraparesis with loss of myelinated axons and death by 5 months. Whole bone marrow transplantation results in selective repopulation of Lrrc33−/− brains with WT microglia and halts disease progression. The phenotypes of WT and Lrrc33−/− microglia in the same brain suggest that there is little spreading of TGF-β activated from one microglial cell to neighboring microglia. Our results suggest that interactions between integrin-bearing cells and cells bearing milieu molecule-associated TGF-β provide localized and selective activation of TGF-β.
DOI: 10.1006/abio.1994.1042
发表时间: 1994-02-01
影响因子: 2.9
作者:
ABE, M;HARPEL, JG;RIFKIN, DB
通讯作者: RIFKIN, DB
DOI: 10.1083/jcb.85.3.890
发表时间: 1980-06
期刊: The Journal of cell biology
影响因子: --
作者:
McCarthy KD;de Vellis J
通讯作者: de Vellis J
DOI: 10.1084/jem.170.3.727
发表时间: 1989-09-01
期刊: The Journal of experimental medicine
影响因子: --
作者:
Khalil N;Bereznay O;Sporn M;Greenberg AH
通讯作者: Greenberg AH
转化生长因子-β1 通过 TβR-I 对小胶质细胞起作用,以防止 MPP 诱导的多巴胺能神经元损失
DOI: 10.1016/j.bbi.2015.08.006
发表时间: 2016-01-01
影响因子: 15.1
作者:
Liu, Zhan;Chen, Hui-Qiao;Peng, Yu-Ping
通讯作者: Peng, Yu-Ping
DOI: 10.1016/j.bbrc.2013.03.071
发表时间: 2013-04-26
影响因子: 3.1
作者:
Liu, Jingyi;Zhang, Zhujun;Yang, Rongcun
通讯作者: Yang, Rongcun