Influence of membrane cholesterol on monocyte chemotaxis.

Autor: Saha AK; Department of Biomedical, Chemical and Materials Engineering, San José State University, San José, CA 95192, USA., Mousavi M; Department of Biomedical, Chemical and Materials Engineering, San José State University, San José, CA 95192, USA., Dallo SF; Department of Biomedical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA., Evani SJ; Department of Biomedical Engineering, The University of Texas at San Antonio, San Antonio, TX 78249, USA., Ramasubramanian AK; Department of Biomedical, Chemical and Materials Engineering, San José State University, San José, CA 95192, USA. Electronic address: anand.ramasubramanian@sjsu.edu.
Jazyk: angličtina
Zdroj: Cellular immunology [Cell Immunol] 2018 Feb; Vol. 324, pp. 74-77. Date of Electronic Publication: 2017 Dec 09.
DOI: 10.1016/j.cellimm.2017.12.005
Abstrakt: Cholesterol content influences several important physiological functions due to its effect on membrane receptors. In this work, we tested the hypothesis that cellular cholesterol alters chemotactic response of monocytes to Monocyte Chemoattractant Protein-1 (MCP-1) due to their effect on the receptor, CCR2. We used Methyl-β-cyclodextrin (MβCD) to alter the baseline cholesterol in human monocytic cell line THP-1, and evaluated their chemotactic response to MCP-1. Compared to untreated cells, cholesterol enrichment increased the number of monocytes transmigrated in response to MCP-1 while depletion had opposite effect. Using imaging flow cytometry, we established that these differences were due to alterations in expression levels, but not the surface distribution, of CCR2.
(Copyright © 2017 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE