Towards Stem/Progenitor Cell-Based Therapies for Retinal Degeneration.

Area of Science:

• Ophthalmology
• Regenerative Medicine
• Cell Biology

Background:

• Retinal degeneration (RD) encompasses conditions like retinitis pigmentosa (RP), age-related macular degeneration (AMD), and Stargardt's disease (STGD), causing irreversible vision loss due to retinal cell death.
• The adult human retina possesses limited self-repair capabilities, hindering functional recovery from retinal damage.
• Currently, no effective clinical treatments exist for most forms of RD.

Purpose of the Study:

• To provide a comprehensive review of stem/progenitor cell-based therapeutic strategies for retinal degeneration (RD).
• To summarize recent advancements in preclinical studies and clinical trials for stem cell therapies in RD.
• To highlight the key challenges hindering the clinical translation of stem cell therapies for substantial vision restoration in RD patients.

Main Methods:

• Review of existing literature on stem cell therapy for retinal degeneration.
• Analysis of preclinical research findings and ongoing clinical trials.
• Identification and discussion of challenges in stem cell therapy for RD.

Main Results:

• Stem cell therapies, utilizing exogenous cells (RPCs, ESCs, iPSCs, MSCs) or endogenous cells (Müller Glia), show significant promise for retinal regeneration.
• Preclinical and clinical studies demonstrate the potential of these approaches in repairing retinal cells and potentially restoring vision.
• Despite promising results, substantial hurdles persist in translating these therapies into effective clinical treatments for widespread vision reconstruction.

Conclusions:

• Stem cell therapy represents a highly promising strategy for treating retinal degeneration (RD) and addressing the unmet need for effective vision restoration.
• Continued research and development are crucial to overcome the existing challenges in clinical translation, aiming for successful therapeutic outcomes.
• Addressing these challenges will pave the way for stem cell-based treatments to become a viable clinical option for patients suffering from various forms of RD.