Adhesive protein‐free synthetic hydrogels for retinal pigment epithelium cell culture with low ROS level

Journal of Biomedical Materials Research - Part A - Tập 102 Số 7 - Trang 2258-2267 - 2014
Yong Mei Chen1,2, Zhen Qi Liu1,2, Zhihui Feng3, Feng Xu1,3, Jian Kang Liu3
1Biomedical Engineering and Biomechanics Center, Xi'an Jiaotong University, Xi'an, 710049 People's Republic of China
2Department of Chemistry, School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an, 710049 People's Republic of China
3Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology and Frontier Institute of Life Science, FIST, Xi'an Jiaotong University, Xi'an, 710049 People's Republic of China

Tóm tắt

AbstractEngineering of human retinal pigment epithelium (RPE) cell monolayer with low level of reactive oxygen species (ROS) is important for regenerative RPE‐based therapies. However, it is still challenging to culture RPE monolayer with low ROS level on soft substratesin vitro. To address this, we developed cytocompatible hydrogels to culture human RPE cell monolayer for future use in regenerative RPE‐based therapies. The cell adhesion, proliferation, monolayer formation, morphology, survival, and ROS level of human ARPE‐19 cells cultured on the surfaces of negatively charged poly (2‐acrylamido‐2‐methyl propane sulfonic sodium) (PNaAMPS) and neutral poly(N,N‐dimethylacrylamide) (PDMAAm) hydrogels with different stiffness were investigated. The importance of hydrogel stiffness on the cell function was firstly highlighted on the base of determined optimal Young's modulus for cultivation of RPE cell monolayer with relatively low ROS level. The construction of RPE cell monolayer with low ROS level on the PNaAMPS hydrogel may hold great potential as promising candidates for transplantation of RPE cell monolayer‐hydrogel construct into the subretinal space to repair retinal functions. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 102A: 2258–2267, 2014.

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