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Graphene Oxide Flakes as a Cellular Adhesive: Prevention of Reactive Oxygen Species Mediated Death of Implanted Cells for Cardiac Repair

Cited 120 time in Web of Science Cited 125 time in Scopus
Authors
Park, Jooyeon; Kim, Bokyoung; Han, Jin; Oh, Jaewon; Park, Subeom; Ryu, Seungmi; Jung, Subin; Shin, Jung-Youn; Lee, Beom Seob; Hong, Byung Hee; Choi, Donghoon; Kim, Byung-Soo
Issue Date
2015-05
Citation
ACS Nano, Vol.9 No.5, pp.4987-4999
Keywords
anoikiscell implantationgraphene oxidemyocardial infarctionreactive oxygen species
Abstract
Mesenchymal stem cell (MSC) implantation has emerged as a potential therapy for myocardial infarction (MI). However, the poor survival of MSCs implanted to treat MI has significantly limited the therapeutic efficacy of this approach. This poor survival is primarily due to reactive oxygen species (ROS) generated in the ischemic myocardium after the restoration of blood flow. ROS primarily causes the death of implanted MSCs by inhibiting the adhesion of the MSCs to extracellular matrices at the lesion site anoikis). In this study, we proposed the use of graphene oxide (GO) flakes to protect the implanted MSCs from ROS-mediated death and thereby improve the therapeutic efficacy of the MSCs. GO can adsorb extracellular matrix (ECM) proteins. The survival of MSCs, which had adhered to ECM protein-adsorbed GO flakes and were subsequently exposed to ROS in vitro or implanted into the ischemia-damaged and reperfused myocardium, significantly exceeded that of unmodified MSCs. Furthermore, the MSC engraftment improved by the adhesion of MSCs to GO flakes prior to implantation enhanced the paracrine secretion from the MSCs following MSC implantation, which in turn promoted cardiac tissue repair and cardiac function restoration. This study demonstrates that GO can effectively improve the engraftment and therapeutic efficacy of MSCs used to repair the injury of ROS-abundant ischemia and reperfusion by protecting implanted cells from anoikis.
ISSN
1936-0851
URI
https://hdl.handle.net/10371/172135
DOI
https://doi.org/10.1021/nn507149w
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College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
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