國家衛生研究院 NHRI:Item 3990099045/9919

NHRI > Institute of Biomedical Engineering and Nanomedicine > Chia-Hsien Hsu > Periodical Articles > Item 3990099045/9919

Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/9919

Title:	Laminin modification subretinal bio-scaffold remodels retinal pigment epithelium-driven microenvironment in vitro and in vivo
Authors:	Peng, CH;Chuang, JH;Wang, ML;Jhan, YY;Chien, KH;Chung, YC;Hung, KH;Chang, CC;Lee, CK;Tseng, WL;Hwang, DK;Hsu, CH;Lin, TC;Chiou, SH;Chen, SJ
Contributors:	Institute of Biomedical Engineering and Nanomedicine
Abstract:	Advanced age-related macular degeneration (AMD) may lead to geographic atrophy or fibrovascular scar at macular, dysfunctional retinal microenvironment, and cause profound visual loss. Recent clinical trials have implied the potential application of pluripotent cell-differentiated retinal pigment epithelial cells (dRPEs) and membranous scaffolds implantation in repairing the degenerated retina in AMD. However, the efficacy of implanted membrane in immobilization and supporting the viability and functions of dRPEs, as well as maintaining the retinal microenvironment is still unclear. Herein we generated a biomimetic scaffold mimicking subretinal Bruch's basement from plasma modified polydimethylsiloxane (PDMS) sheet with laminin coating (PDMS-PmL), and investigated its potential functions to provide a subretinal environment for dRPE-monolayer grown on it. Firstly, compared to non-modified PDMS, PDMS-PmL enhanced the attachment, proliferation, polarization, and maturation of dRPEs. Second, PDMS-PmL increased the polarized tight junction, PEDF secretion, melanosome pigment deposit, and phagocytotic-ability of dRPEs. Third, PDMS-PmL was able to carry a dRPEs/photoreceptor-precursors multilayer retina tissue. Finally, the in vivo subretinal implantation of PDMS-PmL in porcine eyes showed well-biocompatibility up to 2-year follow-up. Notably, multifocal ERGs at 2-year follow-up revealed well preservation of macular function in PDMS-PmL, but not PDMS, transplanted porcine eyes. Trophic PEDF secretion of macular retina in PDMS-PmL group was also maintained to preserve retinal microenvironment in PDMS-PmL eyes at 2 year. Taken together, these data indicated that PDMS-PmL is able to sustain the physiological morphology and functions of polarized RPE monolayer, suggesting its potential of rescuing macular degeneration in vivo.
Date:	2016-10
Relation:	Oncotarget. 2016 Oct;7(40):64631-64648.
Link to:	http://dx.doi.org/10.18632/oncotarget.11502
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000387281000008
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84994129774
Appears in Collections:	[Chia-Hsien Hsu] Periodical Articles

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