Understanding how the body repairs itself and why that ability declines with age is at the center of research led by Romain Madelaine, Ph.D., assistant professor at MDI Biological Laboratory. In a recent Q&A feature, Madelaine shares insights into how studying zebrafish regeneration may help scientists uncover new strategies to support human health.<\/p>\n\n\n\n
Madelaine\u2019s research focuses on the molecular signals that coordinate tissue repair and regeneration. Zebrafish have an extraordinary ability to regenerate organs such as the retina, heart, and spinal cord, making them a powerful model for understanding biological pathways that humans share but cannot fully activate. His laboratory investigates how hormonal signaling, vascular development, and neural processes work together as an interconnected system that supports successful regeneration in fish.<\/p>\n\n\n\n
A key focus of the team\u2019s work is understanding how regenerative capacity changes over time. Many of the mechanisms that support tissue repair in early life gradually decline with age. This contributes to muscle weakness, vision loss, and other age-related conditions. By studying hormones such as insulin and apelin, which help regulate stem cell activity, inflammation, and blood vessel growth, researchers aim to better understand how changes in signaling networks influence aging and tissue health.<\/p>\n\n\n\n
The lab is also examining how communication between blood vessels and neural cells shapes regeneration. Findings suggest that this coordination may be essential for effective tissue repair and may help explain why regenerative processes weaken in aging mammals and in neurodegenerative diseases.<\/p>\n\n\n\n
In addition to advancing scientific discovery, Madelaine emphasizes the importance of training future scientists. His team works with students at multiple levels, helping to build research capacity in regeneration biology and aging science.<\/p>\n\n\n\n
By investigating how regenerative pathways function in zebrafish and how similar mechanisms operate in humans, this research supports long-term progress toward treating conditions such as macular degeneration and age-related muscle decline.<\/p>\n\n\n\n