Immortalized liver endothelial cells: a cell culture model for studies of motility and angiogenesis.

Laboratory Investigation; a Journal of Technical Methods and Pathology
Robert C HuebertVijay H Shah

Abstract

Hepatic sinusoidal endothelial cells (HSECs) are a unique subpopulation of fenestrated endothelial cells lining the hepatic sinusoids and comprising the majority of endothelial cells within the liver. HSECs not only have important roles in blood clearance, vascular tone, and immunity, but also undergo pathological changes, contributing to fibrosis, angiogenesis, and portal hypertension. There are few cell culture models for in vitro studies of motility and angiogenesis as primary cells are time-consuming to isolate, are limited in number, and often lack features of pathological vasculature. The aim of this study was to generate an immortalized cell line derived from HSECs that mimic pathological vasculature and allows detailed molecular interventions to be pursued. HSECs were isolated from mouse liver using CD31-based immunomagnetic separation, immortalized with SV40 large T-antigen, and subcloned on the basis of their ability to endocytose the acetylated low-density lipoprotein (AcLDL). The resulting cell line, transformed sinusoidal endothelial cells (TSECs), maintains an endothelial phenotype as well as some HSEC-specific features. This is evidenced by typical microscopic features of endothelia, including formation of lamell...Continue Reading

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