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Potential mechanism for recruitment and migration of CD133 positive cells to areas of vascular inflammation
Journal article   Open access   Peer reviewed

Potential mechanism for recruitment and migration of CD133 positive cells to areas of vascular inflammation

Prerna Rastogi, Maureen C White, Alice Rickard and Jane McHowat
Thrombosis research, Vol.123(2), pp.258-266
2008
DOI: 10.1016/j.thromres.2008.03.020
PMCID: PMC2678553
PMID: 18495219
url
https://doi.org/10.1016/j.thromres.2008.03.020View
Published (Version of record) Open Access

Abstract

Mast cells are found in large numbers in atherosclerotic plaques. The present study was conducted to determine whether tryptase stimulation of human coronary artery endothelial cells (HCAEC) would lead to an increase in transmigration of CD133 positive cells (CD133+). In vitro these cells can differentiate into mast cells under the influence of specific cytokines and growth factors. CD133+ cells were isolated from umbilical cord blood. They express mRNA for several adhesion molecules that are also utilized in neutrophil migration and can migrate across an HCAEC monolayer. Migration increased significantly when HCAEC were stimulated with tryptase and decreased when CD133+ cells were pretreated with CV3988, a platelet activating factor receptor (PTAFR) antagonist. Following long-term cell culture, these cells stained positively for the presence of tryptase, a mast cell enzyme. CD133+ cells can be utilized as a mast cell precursor population. The transendothelial migration is facilitated by the presence of tryptase and may utilize the PAF/PTAFR interaction in a manner similar to that involved in neutrophil transmigration. Following transmigration, a subset of these progenitor cells may mature into mast cells in the subendothelial space and play a role in propagation of the inflammatory process in atherosclerosis.
Inflammation AC133 Antigen Antigens, CD - metabolism Antigens, CD - ultrastructure Cell Movement Cells, Cultured Coronary Vessels - cytology Endothelial Cells - cytology Endothelial Cells - physiology Endothelium, Vascular - cytology Glycoproteins - metabolism Glycoproteins - ultrastructure Humans Models, Biological Peptides - metabolism RNA, Messenger - metabolism Vascular Diseases - metabolism

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