Title : 7beta-Hydroxycholesterol and 25-hydroxycholesterol-induced interleukin-8 secretion involves a calcium-dependent activation of c-fos via the ERK1/2 signaling pathway in THP-1 cells: oxysterols-induced IL-8 secretion is calcium-dependent.

Pub. Date : 2009 Apr

PMID : 18317936






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1 An oxysterol-induced interleukin-8 (IL-8) secretion in human monocytes/macrophages has been previously noticed, but the mechanisms remained unclear. Oxysterols C-X-C motif chemokine ligand 8 Homo sapiens
2 An oxysterol-induced interleukin-8 (IL-8) secretion in human monocytes/macrophages has been previously noticed, but the mechanisms remained unclear. Oxysterols C-X-C motif chemokine ligand 8 Homo sapiens
3 In this paper, we investigated the signaling pathways leading to the induction of IL-8 secretion in monocytic THP-1 cells treated with 7beta-hydroxycholesterol, a cytototoxic oxysterol, or with 25-hydroxycholesterol, an oxysterol non-cytotoxic toward this cell line. Oxysterols C-X-C motif chemokine ligand 8 Homo sapiens
4 In this paper, we investigated the signaling pathways leading to the induction of IL-8 secretion in monocytic THP-1 cells treated with 7beta-hydroxycholesterol, a cytototoxic oxysterol, or with 25-hydroxycholesterol, an oxysterol non-cytotoxic toward this cell line. Oxysterols C-X-C motif chemokine ligand 8 Homo sapiens
5 The oxysterol-induced IL-8 secretion appears to be a calcium-dependent phenomenon as shown by the use of calcium channel blockers, which strongly decreased IL-8 secretion and IL-8 messenger RNA (mRNA) levels. Oxysterols C-X-C motif chemokine ligand 8 Homo sapiens
6 The oxysterol-induced IL-8 secretion appears to be a calcium-dependent phenomenon as shown by the use of calcium channel blockers, which strongly decreased IL-8 secretion and IL-8 messenger RNA (mRNA) levels. Oxysterols C-X-C motif chemokine ligand 8 Homo sapiens
7 The oxysterol-induced IL-8 secretion appears to be a calcium-dependent phenomenon as shown by the use of calcium channel blockers, which strongly decreased IL-8 secretion and IL-8 messenger RNA (mRNA) levels. Oxysterols C-X-C motif chemokine ligand 8 Homo sapiens
8 These results demonstrate that oxysterol-induced IL-8 secretion is a calcium-dependent phenomenon involving the MEK/ERK1/2 pathway leading to the activation of IL-8 gene via AP-1 (c-fos). Oxysterols C-X-C motif chemokine ligand 8 Homo sapiens
9 These results demonstrate that oxysterol-induced IL-8 secretion is a calcium-dependent phenomenon involving the MEK/ERK1/2 pathway leading to the activation of IL-8 gene via AP-1 (c-fos). Oxysterols C-X-C motif chemokine ligand 8 Homo sapiens