Evaluation of Transplanted Autologous Induced Pluripotent Stem Cell-Derived Retinal Pigment Epithelium in Exudative Age-Related Macular Degeneration

被引：89

作者：

Takagi, Seiji ^{[1
,2
]}

Mandai, Michiko ^{[1
,3
]}

Gocho, Kiyoko ^{[4
]}

Hirami, Yasuhiko ^{[1
,3
,5
]}

Yamamoto, Midori ^{[1
]}

Fujihara, Masashi ^{[1
,5
]}

Sugita, Sunao ^{[1
,3
]}

Kurimoto, Yasuo ^{[1
,3
,5
]}

Takahashi, Masayo ^{[1
,3
]}

机构：

[1] Kobe City Eye Hosp, Dept Ophthalmol, Kobe, Hyogo, Japan

[2] Teikyo Univ, Univ Hosp Mizonokuchi, Dept Ophthalmol, Kawasaki, Kanagawa, Japan

[3] Ctr Biosyst Dynam Res, Lab Retinal Regenerat, Kobe, Hyogo, Japan

[4] Nippon Med Sch, Chiba Hokuso Hosp, Dept Ophthalmol, Chiba, Japan

[5] Kobe City Med Ctr Gen Hosp, Dept Ophthalmol, Kobe, Hyogo, Japan

来源：

OPHTHALMOLOGY RETINA | 2019年 / 3卷 / 10期

关键词：

D O I：

10.1016/j.oret.2019.04.021

中图分类号：

R77 [眼科学];

学科分类号：

100212 ;

摘要：

Purpose: To report the results after 4 years of follow-up in a previously presented first case of induced pluripotent stem cell (iPSC)-derived retinal pigment epithelium (RPE) sheet autologous transplantation using multimodal imaging. Design: Follow-up of a single case. Participant: A patient with exudative age-related macular degeneration and polypoidal choroidal vasculopathy. Methods: Transplantation of an autologous iPSC-derived RPE cell sheet after removal of choroidal neovascularization (CNV) in September 2014. Main Outcome Measures: The function of the graft was assessed 4 years after surgery by color fundus photography, spectral-domain (SD) OCT, fluorescein angiography, indocyanine green angiography, and an adaptive optics (AO) retinal camera. Results: At the 4-year follow-up, the transplanted autologous iPSC-derived RPE sheet had survived beneath the retina with slight expansion of the pigmented area and no adverse events. The outer nuclear layer above and adjacent to the graft showed acceptable thickness and an organized structure. Fluorescein angiography and SD OCT suggested the presence of vessel-like structures confined to the grafted area associated with the remaining trunk vessel of preoperative polypoidal choroidal vasculopathy but with no exudative changes. Visual acuity has been stable with no additional injections of anti-vascular endothelial growth factor agent. The choroidal volume at the graft site is relatively preserved when compared with the volume outside this site without RPE after removal of the CNV. Indocyanine green angiography revealed a preserved choriocapillaris around the iPSC-derived RPE sheet. Dark cell-like structures with a predominantly hexagonal arrangement were observed by AO imaging in an area located near the margin of the graft sheet. The average intercell distance was found to be stable over time. Conclusions: Thus far, the grafted iPSC-derived RPE sheet has survived for 4 years and seems to support photoreceptors and choroidal vessels. The morphologic characteristics of the RPE are observed at the transplant site. (C) 2019 by the American Academy of Ophthalmology.

引用

页码：850 / 859

页数：10

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