Regeneration in fish, with special focus on killifishes

Area of Science:

• Vertebrate regeneration
• Comparative biology
• Regenerative medicine

Background:

• Killifish possess remarkable regenerative abilities, offering insights into tissue repair.
• Aphaniops hormuzensis is an emerging model organism for studying regeneration.
• Regeneration is crucial for understanding vertebrate tissue repair.

Purpose of the Study:

• To synthesize knowledge on fish regeneration, focusing on Aphaniops hormuzensis.
• To compare A. hormuzensis regeneration with established models like zebrafish.
• To evaluate killifish potential in biomedical research for tissue repair and aging.

Main Methods:

• Review of current literature on killifish regeneration.
• Comparative analysis of regeneration rates and mechanisms in A. hormuzensis versus other fish models.
• Exploration of age-dependent regenerative capacity in killifishes.

Main Results:

• A. hormuzensis regenerates fins, kidneys, CNS, and scales rapidly.
• Complete spinal cord and brain tissue repair in A. hormuzensis occurs significantly faster than in zebrafish.
• A. hormuzensis utilizes blastema-mediated epimorphic regeneration at an accelerated rate.
• Age-dependent decline in regenerative capacity is observed in A. hormuzensis.

Conclusions:

• Killifish, especially A. hormuzensis, are powerful models for studying neuroregeneration, organ repair, and aging.
• Their unique regenerative kinetics and life history offer novel insights for regenerative medicine.
• Diversifying model organisms like killifish is essential for advancing tissue regeneration research and human health.