IL-4 directly signals tissue-resident macrophages to proliferate beyond homeostatic levels controlled by CSF-1.
IL-4 directly signals tissue-resident macrophages to proliferate beyond homeostatic levels controlled by CSF-1.
复制标题
DOI:
10.1084/jem.20121999
复制
发表时间:
2013-10-21
期刊:
影响因子:
--
通讯作者:
Allen JE
中科院分区:
文献类型:
--
作者:
Jenkins SJ;Ruckerl D;Thomas GD;Hewitson JP;Duncan S;Brombacher F;Maizels RM;Hume DA;Allen JE
IL-4 and CSF-1 both contribute to macrophage proliferation during nematode infection, but IL-4 permits increased tissue macrophage density without the coincident monocyte infiltration associated with elevated CSF-1 levels. Macrophages (MΦs) colonize tissues during inflammation in two distinct ways: recruitment of monocyte precursors and proliferation of resident cells. We recently revealed a major role for IL-4 in the proliferative expansion of resident MΦs during a Th2-biased tissue nematode infection. We now show that proliferation of MΦs during intestinal as well as tissue nematode infection is restricted to sites of IL-4 production and requires MΦ-intrinsic IL-4R signaling. However, both IL-4Rα–dependent and –independent mechanisms contributed to MΦ proliferation during nematode infections. IL-4R–independent proliferation was controlled by a rise in local CSF-1 levels, but IL-4Rα expression conferred a competitive advantage with higher and more sustained proliferation and increased accumulation of IL-4Rα+ compared with IL-4Rα− cells. Mechanistically, this occurred by conversion of IL-4Rα+ MΦs from a CSF-1–dependent to –independent program of proliferation. Thus, IL-4 increases the relative density of tissue MΦs by overcoming the constraints mediated by the availability of CSF-1. Finally, although both elevated CSF1R and IL-4Rα signaling triggered proliferation above homeostatic levels, only CSF-1 led to the recruitment of monocytes and neutrophils. Thus, the IL-4 pathway of proliferation may have developed as an alternative to CSF-1 to increase resident MΦ numbers without coincident monocyte recruitment.
登录
查看更多内容
影响因子:
3.8
作者:
Dewals BG;Marillier RG;Hoving JC;Leeto M;Schwegmann A;Brombacher F
通讯作者:
Brombacher F
DOI:
10.1084/jem.20091586
发表时间:
2009-12-21
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Chorro L;Sarde A;Li M;Woollard KJ;Chambon P;Malissen B;Kissenpfennig A;Barbaroux JB;Groves R;Geissmann F
通讯作者:
Geissmann F
影响因子:
4.8
作者:
Huynh, Jennifer;Kwa, Mei Qi;Scholz, Glen M.
通讯作者:
Scholz, Glen M.
影响因子:
16.6
作者:
通讯作者:
--
影响因子:
20.3
作者:
Dai, XM;Ryan, GR;Stanley, ER
通讯作者:
Stanley, ER