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Updated: Oct 13, 2025
An Optic Nerve Crush Injury Murine Model to Study Retinal Ganglion Cell Survival
Published on: April 25, 2011
Utilizing mouse optic nerve crush to examine CNS remyelination
Tracey A C S Suter1, Jing Wang1, Huyan Meng1
1Boston Children's Hospital | Harvard Medical School, Boston, MA 02115, USA.
Abstract:
In developing pro-myelination treatment, an important hurdle is the lack of reliable animal models for assessing de novo myelination in disease settings. We recently showed that regenerated axons in injured optic nerves fail to be myelinated, providing an animal model for this purpose. Here, we describe procedures to promote axonal regeneration, administer optic nerve crush, and assess oligodendrocyte differentiation and maturation into myelination-competent oligodendrocytes. This protocol allows for testing the efficacy of remyelination treatments in an in vivo central nervous system (CNS). For complete details on the use and execution of this protocol, please refer to Wang et al. (2020) and Bei et al. (2016).
Insights
Developing effective pro-myelination treatments requires reliable animal models. This study presents a novel optic nerve injury model to assess de novo myelination and test remyelination therapies in the central nervous system (CNS).
Area of Science:
- Neuroscience
- Regenerative Medicine
- Ophthalmology
Background:
- Assessing pro-myelination treatments is hindered by a lack of suitable animal models for de novo myelination in disease contexts.
- Axonal regeneration in injured central nervous system (CNS) tissues often fails to be adequately myelinated.
- Oligodendrocyte differentiation and maturation are critical for effective remyelination.
Purpose of the Study:
- To establish a reliable animal model for evaluating de novo myelination in disease settings.
- To describe procedures for promoting axonal regeneration and assessing oligodendrocyte maturation.
- To enable the testing of pro-myelination and remyelination treatments in vivo.
Main Methods:
- Induction of axonal regeneration in the optic nerve.
- Administration of optic nerve crush injury.
- Assessment of oligodendrocyte differentiation and maturation using established protocols.
- Evaluation of myelination-competent oligodendrocyte development.
Main Results:
- Demonstrated that regenerated axons in injured optic nerves do not undergo spontaneous myelination, establishing a disease model.
- Provided detailed procedures for promoting axonal regeneration and inducing optic nerve crush.
- Established methods to assess oligodendrocyte differentiation and maturation for myelination competence.
Conclusions:
- The described optic nerve injury model serves as a valuable tool for assessing de novo myelination.
- This protocol facilitates the testing of novel pro-myelination and remyelination therapies in a relevant in vivo CNS setting.
- The model supports research into the mechanisms underlying failed myelination and the development of therapeutic strategies.
