International Journal For Multidisciplinary Research

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Translating Axolotl Optic Nerve Regeneration: A Cellular and Molecular Blueprint for Restorative Strategies in Ophthalmology

Author(s) Mr. Janarthan Veeramani
Country India
Abstract Vision loss due to optic nerve damage represents a significant and often irreversiblechallenge in ophthalmology. Conditions such as glaucoma, ischemic optic neuropathies (e.g.,NAION), trauma (TON), and neuroinflammation are primary culprits, leading to profoundvisual impairment. Current therapeutic interventions primarily focus on mitigating diseaseprogression or addressing underlying causes, yet they fall short in restoring vision onceaxonal degeneration and retinal ganglion cell (RGC) death have occurred. In stark contrast,the axolotl (Ambystoma mexicanum), a fascinating salamander, possesses an extraordinarycapacity to fully regenerate its optic nerve following injury. This remarkable regenerativeability, absent in mammals, is characterized by efficient RGC survival, robust axon regrowth,precise reconnection with target structures,and a complete functional restoration of vision.This paper delves into the fundamental barriers impeding optic nerve regeneration inmammals, including intrinsic limitations within RGCs (such as dysregulation of the
PTEN/mTOR pathway), the formation of an inhibitory glial scar rich in chondroitin sulfate proteoglycans (CSPGs), the presence of myelin-associated inhibitors that actively impedeaxon regrowth, and chronic neuroinflammation that perpetuates damage rather than facilitating healing. We conduct a systematic comparison of these mammalian impediments with the axolotl’s inherently pro-regenerative environment, highlighting critical differencesin glial cell responses, the dynamics of immune system activity (particularly M1 vs. M2macrophage polarization), extracellular matrix remodeling, and the apparent reactivationof developmental repair mechanisms.Drawing upon this comprehensive comparative analysis, we propose a series ofaxolotl-inspired strategies aimed at promoting optic nerve regeneration in humans. Thesestrategies encompass modulating the immune response to foster a healing-conducivemicroenvironment, reducing glial scar inhibition and engineering a more supportiveextracellular matrix for nerve regrowth, enhancing RGC regenerative capacity through
targeted molecular therapies, and guiding regenerating axons to ensure accuratereconnection with their central nervous system targets. By meticulously studying theintricate regenerative mechanisms of the axolotl, our objective is to identify novel andtranslatable therapeutic approaches that hold the potential to restore vision in patientsafflicted with various optic neuropathies.
Keywords Optic Nerve Regeneration, Axolotl, Glaucoma, Optic Neuropathy, Traumatic Optic Neuropathy, Vision Restoration, Ophthalmology, Retinal Ganglion Cell (RGC), Glial Scar, Chondroitin Sulfate Proteoglycans (CSPGs), Neuroinflammation, Immunomodulation, Translational Medicine.
Field Biology > Genetics / Molecular
Published In Volume 7, Issue 3, May-June 2025
Published On 2025-06-28
DOI https://doi.org/10.36948/ijfmr.2025.v07i03.48346
Short DOI https://doi.org/g9rn27
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