Objective:
To investigate how local retinal environments influence the success of stem cell-based therapies for geographic atrophy (GA).
Approach:
- Funding and Research Focus: Aya Barzelay-Wollman has received $2.5 million from CIRM to study the survival of transplanted retinal cells in various diseased environments.
- Study of Transition Zone: The research will focus on the retinal transition zone, which contains surviving retinal cells, to identify conditions that support or inhibit transplanted cells.
- Methodology: Using human donor tissue and stem cell-derived retinal cells, the team will analyze cellular, molecular, and structural features of different retinal environments.
- Collaboration: The project includes collaboration with Tsu-Chin “T-C.” Tsao for precision robotics expertise.
Key Findings:
- GA causes progressive vision loss through retinal tissue degeneration.
- Current treatments do not replace lost tissue, highlighting the need for stem cell-based strategies.
- Inconsistent graft survival and integration are significant barriers to effective therapies.
Limitations:
- The study is focused on specific retinal environments and may not generalize to all cases of GA.
- The effectiveness of modifying unfavorable features of the diseased environment remains to be determined.
Sources:
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