Lipoxin A4 Attenuates the Inflammatory Response in Stem Cells of the Apical Papilla via ALX/FPR2

被引：38
作者：
Gaudin, A. [1 ,2 ]
Tolar, M. [3 ]
Peters, O. A. [4 ,5 ]
机构：
[1] Univ Nantes, Dept Endodont, Nantes, France
[2] Univ Nantes, INSERM, Ctr Rech Transplantat & Immunol, UMR1064, Nantes, France
[3] Univ Pacific, Sch Dent, Dept Orthodont, San Francisco, CA 94115 USA
[4] Univ Pacific, Sch Dent, Dept Endodont, San Francisco, CA 94115 USA
[5] Univ Queensland, Sch Dent, Oral Hlth Ctr, Herston, Qld, Australia
来源：
SCIENTIFIC REPORTS | 2018年 / 8卷
关键词：
MICROGLIAL CELLS; LIPID MEDIATOR; BONE-MARROW; RECEPTOR; EXPRESSION; LIPOPOLYSACCHARIDE; RESOLUTION; PROMOTE; IDENTIFICATION; PROLIFERATION;
D O I：
10.1038/s41598-018-27194-7
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Similar to the onset phase of inflammation, its resolution is a process that unfolds in a manner that is coordinated and regulated by a panel of mediators. Lipoxin A4 (LXA(4)) has been implicated as an anti-inflammatory, pro-resolving mediator. We hypothesized that LXA(4) attenuates or prevents an inflammatory response via the immunosuppressive activity of Stem Cells of the Apical Papilla (SCAP). Here, we report for the first time in vitro that in a SCAP population, lipoxin receptor ALX/FPR2 was constitutively expressed and upregulated after stimulation with lipopolysaccharide and/or TNF-alpha. Moreover, LXA(4) significantly enhanced proliferation, migration, and wound healing capacity of SCAP through the activation of its receptor, ALX/FPR2. Cytokine, chemokine and growth factor secretion by SCAP was inhibited in a dose dependent manner by LXA(4). Finally, LXA(4) enhanced immunomodulatory properties of SCAP towards Peripheral Blood Mononuclear Cells. These findings provide the first evidence that the LXA(4)-ALX/FPR2 axis in SCAP regulates inflammatory mediators and enhances immunomodulatory properties. Such features of SCAP may also support the role of these cells in the resolution phase of inflammation and suggest a novel molecular target for ALX/FPR2 receptor to enhance a stem cell-mediated pro-resolving pathway.
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页数：12
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