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Updated: Aug 23, 2025

Reconstruct Human Retinoblastoma In Vitro
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Reconstruct Human Retinoblastoma In Vitro

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Reconstruct Human Retinoblastoma In Vitro.

Xiao Zhang1, Zi-Bing Jin2

  • 1Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Science Key Laboratory.

Journal of Visualized Experiments : Jove
|October 31, 2022
PubMed
Summary

Researchers created a human retinoblastoma (RB) disease model using gene-edited human embryonic stem cells (hESCs). This "in-a-dish" model aids in studying RB development and finding new therapies.

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Area of Science:

  • Biomedical research
  • Cancer biology
  • Stem cell technology

Background:

  • Retinoblastoma (RB) is a pediatric cancer originating from cone precursors.
  • Rodent models have limitations due to interspecies differences and rarity of cone precursors.
  • A human-derived disease model is crucial for understanding RB mechanisms and developing targeted therapies.

Purpose of the Study:

  • To generate gene-edited human embryonic stem cell (hESC) lines for modeling retinoblastoma (RB).
  • To establish an "in-a-dish" model of human RB by differentiating these hESCs into retinal organoids.
  • To investigate the cone-precursor origin of RB and provide a platform for therapeutic development.

Main Methods:

  • Generation of two gene-edited hESC lines: one with a biallelic RB1 point mutation (RB1Mut/Mut) and another with an RB1 knockout mutation (RB1-/-).

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  • Differentiation of gene-edited hESCs into retinal organoids using a combined 2D and 3D protocol.
  • Establishment of RB cell lines by segregation from RB organoids.

    • Main Results:

    • Successful reconstruction of human retinoblastoma (RB) in vitro.
    • Observation of RB formation during retinal development in the engineered organoids.
    • Identification of the cone-precursor origin of retinoblastoma.
    • Establishment of RB cell lines derived from the organoids.

    Conclusions:

    • The developed gene-edited hESC-derived retinal organoid model accurately recapitulates human retinoblastoma.
    • This model provides a valuable platform for studying RB pathogenesis, including genesis, proliferation, and growth.
    • The model facilitates the development and testing of novel therapeutic agents for retinoblastoma.