Annexin A1 regulates neutrophil clearance by macrophages in the mouse bone marrow.
Annexin A1 regulates neutrophil clearance by macrophages in the mouse bone marrow.
复制标题
膜联蛋白A1调节小鼠骨髓中巨噬细胞的中性粒细胞清除。
DOI:
10.1096/fj.11-182089
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发表时间:
2012-01
期刊:
影响因子:
--
通讯作者:
Rankin SM
中科院分区:
文献类型:
--
作者:
Dalli J;Jones CP;Cavalcanti DM;Farsky SH;Perretti M;Rankin SM
Under homeostatic conditions, a proportion of senescent CXCR4hi neutrophils home from the circulation back to the bone marrow, where they are phagocytosed by bone marrow macrophages. In this study, we have identified an unexpected role for the anti-inflammatory molecule annexin A1 (AnxA1) as a critical regulator of this process. We first observed that AnxA1−/− mice have significantly increased neutrophil numbers in their bone marrow while having normal levels of GM and G colony-forming units, monocytes, and macrophages. Although AnxA1−/− mice have more neutrophils in the bone marrow, a greater proportion of these cells are senescent, as determined by their higher levels of CXCR4 expression and annexin V binding. Consequently, bone marrow neutrophils from AnxA1−/− mice exhibit a reduced migratory capacity in vitro. Studies conducted in vitro also show that expression of AnxA1 is required for bone marrow macrophages, but not peritoneal macrophages, to phagocytose apoptotic neutrophils. Moreover, in vivo experiments indicate a defect in clearance of wild-type neutrophils in the bone marrow of AnxA1−/− mice. Thus, we conclude that expression of AnxA1 by resident macrophages is a critical determinant for neutrophil clearance in the bone marrow.— Dalli, J., Jones, C. P., Cavalcanti, D. M., Farsky, S. H., Perretti, M., Rankin, S. M. Annexin A1 regulates neutrophil clearance by macrophages in the mouse bone marrow.
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影响因子:
3.3
作者:
Fan, XX;Krahling, S;Schlegel, RA
通讯作者:
Schlegel, RA
DOI:
10.1073/pnas.95.24.14535
发表时间:
1998-11-24
影响因子:
11.1
作者:
Lim, LHK;Solito, E;Perretti, M
通讯作者:
Perretti, M
影响因子:
4
作者:
Gorgani, Nick N.;Ma, Yan;Clark, Hilary F.
通讯作者:
Clark, Hilary F.
影响因子:
20.3
作者:
Dalli, Jesmond;Norling, Lucy V.;Perretti, Mauro
通讯作者:
Perretti, Mauro
影响因子:
5.5
作者:
Chatterjee, BE;Yona, S;Perretti, M
通讯作者:
Perretti, M