Spatiotemporal control of cell cycle acceleration during axolotl spinal cord regeneration

• Autores: Cura Costa, Emanuel; Otsuki, Leo; Rodrigo Albors, Aida; Tanaka, Elly M.; Chara, Osvaldo
• Año de publicación: 2021
• Idioma: inglés
• Tipo de recurso: conjunto de datos
• Materia: Biología; Axolotl; Cell cycle; Regeneration; FUCCI; Spinal cord
• Institución: Universidad Nacional de La Plata

Axolotls are uniquely able to resolve spinal cord injuries, but little is known about the mechanisms underlying spinal cord regeneration. We previously found that tail amputation leads to reactivation of a developmental-like program in spinal cord ependymal cells (Rodrigo Albors et al., 2015), characterized by a high-proliferation zone emerging 4 days post-amputation (Rost et al., 2016). What underlies this spatiotemporal pattern of cell proliferation, however, remained unknown. Here, we use modeling, tightly linked to experimental data, to demonstrate that this regenerative response is consistent with a signal that recruits ependymal cells during ~85 hours after amputation within ~830 μm of the injury. We adapted Fluorescent Ubiquitination-based Cell Cycle Indicator (FUCCI) technology to axolotls (AxFUCCI) to visualize cell cycles in vivo. AxFUCCI axolotls confirmed the predicted appearance time and size of the injury-induced recruitment zone and revealed cell cycle synchrony between ependymal cells. Our modeling and imaging move us closer to understanding bona fide spinal cord regeneration.
This is the second release of the Jupyter Notebooks that contains source code for data analysis performed for Cura Costa et al., 2021. You can view the current version of the notebooks on GitHub or browse them online using nbviewer.
Fil: Chara, Osvaldo. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; Argentina. Technische Universität Dresden. Center for Information Services and High Performance Computing; Alemania.
Fil: Cura Costa, Emanuel. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; Argentina.
Instituto de Física de Líquidos y Sistemas Biológicos