Title:Generating Retinas through Guided Pluripotent Stem Cell Differentiation
and Direct Somatic Cell Reprogramming
Volume: 19
Issue: 9
Author(s): Ke Zhang, Wenwen Cai, Leyi Hu and Shuyi Chen*
Affiliation:
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial
Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510623, China
Keywords:
Retina, retinal organoid, pluripotent stem cell, reprogramming, retinal ganglion cell, photoreceptor, RPE.
Abstract: Retinal degeneration diseases affect millions of people worldwide but are among the
most difficult eye diseases to cure. Studying the mechanisms and developing new therapies for these
blinding diseases requires researchers to have access to many retinal cells. In recent years
there has been substantial advances in the field of biotechnology in generating retinal cells and
even tissues in vitro, either through programmed sequential stem cell differentiation or direct somatic
cell lineage reprogramming. The resemblance of these in vitro-generated retinal cells to native
cells has been increasingly utilized by researchers. With the help of these in vitro retinal models,
we now have a better understanding of human retinas and retinal diseases. Furthermore, these
in vitro-generated retinal cells can be used as donor cells which solves a major hurdle in the development
of cell replacement therapy for retinal degeneration diseases, while providing a promising
option for patients suffering from these diseases. In this review, we summarize the development
of pluripotent stem cell-to-retinal cell differentiation methods, the recent advances in generating
retinal cells through direct somatic cell reprogramming, and the translational applications of retinal
cells generated in vitro. Finally, we discuss the limitations of the current protocols and possible
future directions for improvement.