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New human microvascular endothelial cell lines with specific adhesion molecules phenotypes.
C Kieda1, M Paprocka, A Krawczenko
1Centre de Biophysique Moléculaire, CNRS, Glycobiologie, Orléans, France. kieda@cnrs-orleans.fr
Endothelium : Journal of Endothelial Cell Research
|February 8, 2003
Summary
Researchers developed distinct tissue-specific endothelial cell lines to study how circulating cells, like lymphocytes, interact with blood vessels. These cell lines mimic natural tissue interactions, aiding research into immune cell trafficking and disease.
Area of Science:
- Immunology
- Cell Biology
- Vascular Biology
Background:
- Vascular endothelial cells control the extravasation of circulating cells, crucial for lymphocyte homing.
- This process is vital in both normal physiological functions and pathological conditions like inflammation, autoimmune diseases, and metastasis.
- Understanding endothelium selectivity is key to dissecting immune cell trafficking.
Purpose of the Study:
- To establish and characterize microvascular endothelial cell lines from distinct tissue origins.
- To assess the molecular basis of endothelium selectivity in cell-cell interactions.
- To provide tools for studying tissue-specific adhesion of lymphoid and myeloid cells.
Main Methods:
- Immortalization of endothelial cells isolated from lymphoid (lymph nodes, appendix) and nonlymphoid (intestine, lung, skin) tissues.
- Characterization of general endothelial markers (von Willebrand factor, ACE, VE-cadherin, E-selectin).
- Analysis of tissue-specific adhesion molecules (PNAd, ICAM-1, CD49e, MAdCAM-1) and cell adhesion assays.
Main Results:
- Established endothelial cell lines retained general endothelial characteristics.
- Cell lines exhibited phenotypic markers reflecting their tissue of origin (e.g., PNAd in lymph node cells).
- Distinct adhesion patterns of lymphoid and myeloid cells were observed on different endothelial cell lines.
Conclusions:
- The developed endothelial cell lines accurately represent tissue-specific characteristics.
- These cell lines are valuable tools for investigating the molecular mechanisms of tissue-specific cell-cell interactions.
- Further research using these models can elucidate lymphocyte homing and immune cell trafficking in health and disease.