Progress in Gene Therapy for Rhodopsin Autosomal Dominant Retinitis Pigmentosa

Raghavi Sudharsan1, William A Beltran2

  • 1Division of Experimental Retinal Therapies, Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA.

Insights

Gene therapy shows promise for treating autosomal dominant retinitis pigmentosa (RP) caused by rhodopsin gene mutations. Research in animal models over 20 years explored various gene silencing and delivery strategies for RHO-adRP.

Area of Science:

  • Ophthalmology
  • Genetics
  • Gene Therapy

Background:

  • Autosomal dominant retinitis pigmentosa (RP) is an inherited retinal degeneration.
  • Mutations in the rhodopsin gene (RHO) are a common cause of dominant RP.
  • Current treatments are limited, necessitating the development of novel therapeutic strategies.

Purpose of the Study:

  • To review proof-of-concept gene therapy studies for rhodopsin-associated autosomal dominant RP (RHO-adRP).
  • To summarize gene therapy approaches, reagents, and delivery strategies used in animal models over the past two decades.
  • To highlight key findings from these preclinical studies.

Main Methods:

  • Systematic review of gene therapy studies for RHO-adRP in animal models.
  • Tabular compilation of gene silencing reagents (e.g., ASOs, shRNA).
  • Categorization of gene delivery strategies (e.g., viral vectors, non-viral methods).

Main Results:

  • Multiple gene therapy approaches have demonstrated proof-of-concept in preclinical RHO-adRP models.
  • Various gene silencing reagents and delivery systems have been evaluated.
  • Significant progress has been made in developing potential therapeutic interventions.

Conclusions:

  • Gene therapy represents a promising therapeutic avenue for RHO-adRP.
  • Continued research and optimization of delivery systems are crucial for clinical translation.
  • Preclinical studies provide a foundation for future human clinical trials in gene therapy for RP.