The apple snail has a remarkable ability to regenerate its eye, similar to that of a human eye. Researchers at the Stowers Institute for Medical Research have identified the apple snail as a valuable model organism for studying eye regeneration, offering insights that could lead to advancements in treating eye conditions like macular degeneration.
In a recent study published in Nature Communications, led by former Postdoctoral Research Associate Alice Accorsi, Ph.D., now an Assistant Professor at the University of California, Davis, the research team discovered that the apple snail possesses camera-type eyes similar to humans. By manipulating the snail’s genome, they were able to create stable gene variations that shed light on the process of eye regeneration.
The process of apple snail eye regeneration unfolds in four stages over 28 days, including wound healing, formation of a special cell mass, emergence of a lens and retina, and maturation of all eye components. Unlike vertebrates, which can only regenerate the first stage of wound healing, apple snails have the remarkable ability to regenerate their entire eye.
One key gene identified in the study, pax6, plays a critical role in eye development in both vertebrates and apple snails. By disrupting the function of the pax6 gene using the CRISPR-Cas9 gene-editing technique, the researchers were able to observe the development of snails without eyes, providing valuable insights into gene function and eye regeneration.
The study has garnered praise from experts in the field, including Angus Davison, Ph.D., a professor at the University of Nottingham, who highlighted the potential of apple snails as a novel system for studying mollusk development.
Moving forward, the research team plans to further investigate candidate genes involved in eye regeneration and development. By disrupting these genes, they aim to uncover the genetic mechanisms that underpin the restoration of complex sensory organs like the eye.
The groundbreaking work with apple snails showcases the power of combining genetic manipulation with regenerative biology to gain a mechanistic understanding of eye restoration. The findings open up new possibilities for advancing biological knowledge and exploring potential treatments for eye conditions in humans.
Overall, the research with apple snails represents a significant step forward in the field of regenerative medicine and offers hope for the development of innovative therapies for eye-related disorders. By leveraging the unique regenerative capabilities of the apple snail, scientists are paving the way for future breakthroughs in the study of eye regeneration.
