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In vitro self-assembly of human pericyte-supported endothelial microvessels in three-dimensional co-culture: a simple model for interrogating endothelial:pericyte interactions

Identifieur interne : 003981 ( Main/Exploration ); précédent : 003980; suivant : 003982

In vitro self-assembly of human pericyte-supported endothelial microvessels in three-dimensional co-culture: a simple model for interrogating endothelial:pericyte interactions

Auteurs : Jp Waters [Royaume-Uni] ; Ms Kluger [États-Unis] ; M. Graham [États-Unis] ; Wg Chang [États-Unis] ; Jr Bradley [Royaume-Uni] ; Js Pober [États-Unis]

Source :

RBID : PMC:3879598

Abstract

We describe a method for co-culture of macro or microvascular human endothelial cells (ECs) and pericytes (PCs) within a 3-dimensional (3-D) protein matrix resulting in lumenized EC cords invested by PCs. To prevent apoptotic cell death of ECs in 3-D culture, human umbilical vein or dermal microvascular ECs were transduced to express the anti-apoptotic protein Bcl-2. To prevent PC-mediated gel contraction, the collagen-fibronectin gel was polymerized within a polyglycolic acid (PGA) non-woven matrix. Over the first 24-48 h, EC-only gels spontaneously formed cords that developed lumens via vacuolization; such vascular networks were maintained for up to 7 days. In EC-PC co-cultures, PCs were recruited to the EC networks. PC investment of EC cords both limited the lumen diameter and increased the degree of vascular network arborization. Peg and socket junctions formed between ECs and PCs in this system but dye transfer, indicative of gap junction formation, was not observed. This simple system can be used to analyze bidirectional signals between ECs and PCs in a 3-D geometry.


Url:
DOI: 10.1159/000353303
PubMed: 23860328
PubMed Central: 3879598


Affiliations:


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self-assembly of human pericyte-supported endothelial microvessels in three-dimensional co-culture: a simple model for interrogating endothelial:pericyte interactions</title>
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