Volume 13, Issue 1 pp. 76-86
RESEARCH ARTICLE

Screening and optimization of potential injection vehicles for storage of retinal pigment epithelial stem cell before transplantation

Yangzi Tian

Yangzi Tian

Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, Albany, New York

Search for more papers by this author
Richard Davis

Richard Davis

Department of Retina Research, Neural Stem Cell Institute, Rensselaer, New York

Search for more papers by this author
Michael R. Zonca Jr

Michael R. Zonca Jr

Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, Albany, New York

Search for more papers by this author
Jeffrey H. Stern

Jeffrey H. Stern

Department of Retina Research, Neural Stem Cell Institute, Rensselaer, New York

Search for more papers by this author
Sally Temple

Sally Temple

Department of Retina Research, Neural Stem Cell Institute, Rensselaer, New York

Search for more papers by this author
Yubing Xie

Corresponding Author

Yubing Xie

Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, Albany, New York

Correspondence

Yubing Xie, Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, 257 Fuller Road, Albany, NY 12203.

Email: [email protected]

Search for more papers by this author
First published: 31 October 2018
Citations: 4

Abstract

Retinal pigment epithelial (RPE) cells are highly specialized neural cells that have several functions essential for vision. Progressive deterioration of RPE cells in elderly individuals can result in visual impairment and ultimately the blinding disease age-related macular degeneration. Subretinal transplantation of stem cell-derived RPE cell suspensions is being explored as a strategy to recover the damaged retina and improve vision. This approach may be improved by developing a vehicle that increases postinjection cell viability and distribution and integration of RPE cells. In this study, Food and Drug Administration-approved natural polymers, including alginate, methylcellulose, and hyaluronic acid (HA), were examined for performance as cell vehicles for adult human RPE stem cells (RPESCs). We compared the effect of RPESC storage as a cell suspension in these delivery vehicles for 1–96 hr at different temperatures on subsequent cell performance in a cell culture model. RPESC survival, attachment, distribution, proliferation, and differentiation into RPE cells were monitored by microscopy over the course of 8 weeks. Our in vitro results demonstrate that RPESC suspension in a 0.2% HA solution promotes better initial cell distribution, proliferation, cobblestone formation, and expression of RPE cell markers (microphthalmia-associated transcription factor and orthodenticle homeobox 2) after 96 hr of storage. These data suggest that HA addition to the vehicle can significantly enhance RPESC performance in vitro and is a promising strategy to pursue an improved delivery vehicle supporting in vivo RPE cell transplantation.

CONFLICT OF INTEREST

The authors have no conflict of interest to declare.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.