Thin Layered Heterogeneous Vascularized 3D Tissue Models Constructed with Separated-Layer Collagen Microtube

Abstract

We present an in vitro vascularized 3D cell co-culture, performed by a separated-layer collagen microtube device. Our device can co-culture endothelial and other cells in close position, while the collagen layers are separated into an outer support layer and an inner culture layer. The close distance between different types of cells enhances mutual cell interaction and enables us to observe the tissue structures clearly. Moreover, while collagen tubes are directly attached to silicone tubes, perfusion culture is easily performed by an external pump system. We believe that our device could help the fabrication of various vascularized tissue models in high activity, and contribute to the development of pharmacokinetic testing platforms and regenerative medicine.