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Effect of Pore Size of Honeycomb‐Patterned Polymer Film on Spontaneous Formation of 2D Micronetworks by Coculture of Human Umbilical Vein Endothelial Cells and Mesenchymal Stem Cells
Author(s) -
Oku Keisuke,
Ohno Kyohei,
Miyamoto Daisuke,
Ito Koju,
Yabu Hiroshi,
Nakazawa Kohji
Publication year - 2021
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.202100113
Subject(s) - umbilical vein , mesenchymal stem cell , scaffold , biophysics , tissue engineering , chemistry , porous medium , endothelial stem cell , in vitro , materials science , honeycomb , stem cell , microbiology and biotechnology , biomedical engineering , porosity , nanotechnology , composite material , biology , biochemistry , medicine
The geometrical control of micronetwork structures ( μ NSs) formed by endothelial cells is an important topic in tissue engineering, cell‐based assays, and fundamental biological studies. In this study, μ NSs are formed using human umbilical vein endothelial cells (HUVECs) by the coculture of HUVECs and human mesenchymal stem cells (MSCs) confined in a honeycomb‐patterned poly‐ l ‐lactic acid film (honeycomb film (HCF)), which is a novel cell culture scaffold. The HCF is produced using the breath figure method, which uses condensed water droplets as pore templates. The confinement of the HUVECs and MSCs in the HCF along with the application of centrifugal force results in μ NS formation when the pore size is more than 20 μ m. Furthermore, μ NS development is geometrically restricted by the hexagonally packed and connected pores in the horizontal direction of the HCF. Network density is also controlled by changing the seeding density of the HUVECs and MSCs. The threshold pore size indicates that μ NSs can be formed spontaneously by using an HCF with a perfectly uniform porous structure. This result provides an important design guideline for the structure of porous cell culture scaffolds by applying a blood vessel model in vitro.