TY - JOUR
T1 - Myeloid IκBα deficiency promotes atherogenesis by enhancing leukocyte recruitment to the plaques
AU - Goossens, Pieter
AU - Vergouwe, Monique N.
AU - Gijbels, Marion J. J.
AU - Curfs, Danielle M. J.
AU - van Woezik, Johannes H. G.
AU - Hoeksema, Marten A.
AU - Xanthoulea, Sofia
AU - Leenen, Pieter J. M.
AU - Rupec, Rudolf A.
AU - Hofker, Marten H.
AU - de Winther, Menno P. J.
PY - 2011
Y1 - 2011
N2 - Activation of the transcription factor NF-κB appears to be involved in different stages of atherogenesis. In this paper we investigate the role of NF-κB inhibitor IκBα in atherosclerosis. Myeloid-specific deletion of IκBα results in larger and more advanced lesions in LDL-R-deficient mice without affecting the compositional phenotype of the plaques or systemic inflammatory markers in the plasma. We show that IκBα-deleted macrophages display enhanced adhesion to an in vitro endothelial cell layer, coinciding with an increased expression of the chemokine CCL5. Also, in vivo we found that IκBα(del) mice had more leukocytes adhering to the luminal side of the endothelial cell layers that cover the atherosclerotic plaques. Moreover, we introduce ER-MP58 in this paper as a new immunohistochemical tool for quantifying newly recruited myeloid cells in the atherosclerotic lesion. This staining confirms that in IκBα(del) mice more leukocytes are attracted to the plaques. In conclusion, we show that IκBα deletion in myeloid cells promotes atherogenesis, probably through an induced leukocyte recruitment to plaques
AB - Activation of the transcription factor NF-κB appears to be involved in different stages of atherogenesis. In this paper we investigate the role of NF-κB inhibitor IκBα in atherosclerosis. Myeloid-specific deletion of IκBα results in larger and more advanced lesions in LDL-R-deficient mice without affecting the compositional phenotype of the plaques or systemic inflammatory markers in the plasma. We show that IκBα-deleted macrophages display enhanced adhesion to an in vitro endothelial cell layer, coinciding with an increased expression of the chemokine CCL5. Also, in vivo we found that IκBα(del) mice had more leukocytes adhering to the luminal side of the endothelial cell layers that cover the atherosclerotic plaques. Moreover, we introduce ER-MP58 in this paper as a new immunohistochemical tool for quantifying newly recruited myeloid cells in the atherosclerotic lesion. This staining confirms that in IκBα(del) mice more leukocytes are attracted to the plaques. In conclusion, we show that IκBα deletion in myeloid cells promotes atherogenesis, probably through an induced leukocyte recruitment to plaques
U2 - https://doi.org/10.1371/journal.pone.0022327
DO - https://doi.org/10.1371/journal.pone.0022327
M3 - Article
C2 - 21814576
SN - 1932-6203
VL - 6
SP - e22327-(8 p)
JO - PLOS ONE
JF - PLOS ONE
IS - 7
ER -