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Updated: Jun 19, 2026
02:33
Transconjunctival Approach for Injection into the Rat Optic Nerve
Published on: April 4, 2025
Oncomodulin links inflammation to optic nerve regeneration
Yuqin Yin1, Qi Cui, Hui-Ya Gilbert
1Department of Surgery and Anesthesiology, Children's Hospital, Laboratory for Neuroscience Research in Neurosurgery, Harvard Medical School, Boston, MA 02115, USA.
Summary
Inflammation promotes optic nerve regeneration by inducing immune cells to secrete oncomodulin (Ocm). Blocking Ocm prevents this crucial axon regrowth, highlighting its role in central nervous system repair.
Area of Science:
- Neuroscience
- Immunology
- Regenerative Medicine
Background:
- Central nervous system (CNS) injury triggers inflammatory responses impacting neurological outcomes.
- The optic nerve typically fails to regenerate after damage.
- Intraocular inflammation promotes retinal ganglion cell (RGC) axon growth, but the molecular mechanisms are unclear.
Purpose of the Study:
- To investigate the role of oncomodulin (Ocm) in promoting RGC axon regeneration during intraocular inflammation.
- To determine if Ocm secreted by immune cells mediates the pro-regenerative effects of inflammation in vivo.
Main Methods:
- Inducing intraocular inflammation in various animal models.
- Measuring Ocm levels secreted by infiltrating immune cells.
- Using receptor-blocking agents to inhibit Ocm function.
- Assessing RGC axon regeneration in response to inflammation and Ocm inhibition.
Main Results:
- Intraocular inflammation significantly increases Ocm secretion by innate immune cells.
- Inhibition of Ocm-receptor binding suppressed inflammation-induced axon regeneration.
- These findings were consistent across different species and experimental models.
Conclusions:
- Oncomodulin (Ocm) is a key mediator of axon regeneration in the optic nerve during inflammation.
- Ocm acts as a potent growth-promoting signal from the innate immune system to neurons.
- Targeting the Ocm pathway holds potential for enhancing CNS repair after injury.
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