Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Local macrophage proliferation, rather than recruitment from the blood, is a signature of TH2 inflammation
AU - Jenkins, Stephen J
AU - Ruckerl, Dominik
AU - Cook, Peter C
AU - Jones, Lucy H
AU - Finkelman, Fred D
AU - van Rooijen, Nico
AU - MacDonald, Andrew S
AU - Allen, Judith E
PY - 2011/6/10
Y1 - 2011/6/10
N2 - A defining feature of inflammation is the accumulation of innate immune cells in the tissue that are thought to be recruited from the blood. We reveal that a distinct process exists in which tissue macrophages undergo rapid in situ proliferation in order to increase population density. This inflammatory mechanism occurred during T helper 2 (T(H)2)-related pathologies under the control of the archetypal T(H)2 cytokine interleukin-4 (IL-4) and was a fundamental component of T(H)2 inflammation because exogenous IL-4 was sufficient to drive accumulation of tissue macrophages through self-renewal. Thus, expansion of innate cells necessary for pathogen control or wound repair can occur without recruitment of potentially tissue-destructive inflammatory cells.
AB - A defining feature of inflammation is the accumulation of innate immune cells in the tissue that are thought to be recruited from the blood. We reveal that a distinct process exists in which tissue macrophages undergo rapid in situ proliferation in order to increase population density. This inflammatory mechanism occurred during T helper 2 (T(H)2)-related pathologies under the control of the archetypal T(H)2 cytokine interleukin-4 (IL-4) and was a fundamental component of T(H)2 inflammation because exogenous IL-4 was sufficient to drive accumulation of tissue macrophages through self-renewal. Thus, expansion of innate cells necessary for pathogen control or wound repair can occur without recruitment of potentially tissue-destructive inflammatory cells.
KW - Animals
KW - Blood
KW - Brugia malayi
KW - Cell Proliferation
KW - Female
KW - Filariasis
KW - Filarioidea
KW - Inflammation
KW - Interleukin-4
KW - Macrophage Activation
KW - Macrophages
KW - Male
KW - Mice
KW - Mice, Inbred C57BL
KW - Monocytes
KW - Th2 Cells
KW - Journal Article
KW - Research Support, N.I.H., Extramural
KW - Research Support, Non-U.S. Gov't
KW - Research Support, U.S. Gov't, Non-P.H.S.
U2 - 10.1126/science.1204351
DO - 10.1126/science.1204351
M3 - Journal article
C2 - 21566158
VL - 332
SP - 1284
EP - 1288
JO - Science
JF - Science
SN - 0036-8075
IS - 6035
ER -