LPS counter regulates RNA expression of extracellular proteases and their inhibitors in murine macrophages
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LPS counter regulates RNA expression of extracellular proteases and their inhibitors in murine macrophages. / Hald, Andreas; Rønø, Birgitte; Lund, Leif R; Egerod, Kristoffer Lihme.
In: Mediators of Inflammation, Vol. 2012, No. 157894, 2012, p. 157894.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - LPS counter regulates RNA expression of extracellular proteases and their inhibitors in murine macrophages
AU - Hald, Andreas
AU - Rønø, Birgitte
AU - Lund, Leif R
AU - Egerod, Kristoffer Lihme
PY - 2012
Y1 - 2012
N2 - Besides their evident importance in host defense, macrophages have been shown to play a detrimental role in different pathological conditions, including chronic inflammation, atherosclerosis, and cancer. Regardless of the exact situation, macrophage activation and migration are intimately connected to extracellular matrix degradation. This process is accomplished by multiple proteolytic enzymes, including serine proteases and members of the matrix metalloproteinase family. In this study, we have utilized qPCR arrays to simultaneously analyze the temporal expression pattern of a range of genes involved in extracellular matrix metabolism in the mouse derived-macrophage cell line RAW 264.7 following stimulation with LPS. Our results revealed that LPS induces the expression of matrix metalloproteinases while at the same time decreased the expression of matrix metalloproteinase inhibitors. The opposite scenario was found for the genes encoding serine proteases, which were downregulated while their inhibitors were upregulated. In addition, intergenic comparison of the expression levels of related proteases revealed large differences in their basal expression level. These data highlight the complexity of the gene expression regulation implicated in macrophage-dependent matrix degradation and furthermore emphasize the value of qPCR array techniques for the investigation of the complex regulation of the matrix degradome.
AB - Besides their evident importance in host defense, macrophages have been shown to play a detrimental role in different pathological conditions, including chronic inflammation, atherosclerosis, and cancer. Regardless of the exact situation, macrophage activation and migration are intimately connected to extracellular matrix degradation. This process is accomplished by multiple proteolytic enzymes, including serine proteases and members of the matrix metalloproteinase family. In this study, we have utilized qPCR arrays to simultaneously analyze the temporal expression pattern of a range of genes involved in extracellular matrix metabolism in the mouse derived-macrophage cell line RAW 264.7 following stimulation with LPS. Our results revealed that LPS induces the expression of matrix metalloproteinases while at the same time decreased the expression of matrix metalloproteinase inhibitors. The opposite scenario was found for the genes encoding serine proteases, which were downregulated while their inhibitors were upregulated. In addition, intergenic comparison of the expression levels of related proteases revealed large differences in their basal expression level. These data highlight the complexity of the gene expression regulation implicated in macrophage-dependent matrix degradation and furthermore emphasize the value of qPCR array techniques for the investigation of the complex regulation of the matrix degradome.
U2 - 10.1155/2012/157894
DO - 10.1155/2012/157894
M3 - Journal article
C2 - 22529519
VL - 2012
SP - 157894
JO - Mediators of Inflammation
JF - Mediators of Inflammation
SN - 0962-9351
IS - 157894
ER -
ID: 38287223