Tissue composition shapes differential skeletal integration strategies during axolotl limb regeneration
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Limb regeneration requires rebuilding the missing structures and integrating them with stump tissues. Osteoclast-mediated tissue resorption is essential for skeletal integration during regeneration. However, it is unknown if skeletal tissue composition impacts its resorption and, if so, how it is regulated. Here, we show that osteoclast-mediated skeletal resorption is activated in amputations damaging the diaphysis, but not the epiphysis, of skeletal elements. We found that amputations in the calcified diaphysis trigger the sustained expression of RANKL and the chemokine Loc483, and that the latter is sufficient to induce osteoclast presence in non-resorbing amputations. Finally, our data suggests that the transcriptomic profile of the apical epithelial cap is impacted by the tissues injured by the amputation. Overall, our work reveals that tissue composition at the amputation plane shapes adaptations of the regenerative program, which ultimately contribute to the near-seamless tissue integration of the regenerating axolotl limb regardless of the amputation position.
Details
| Original language | English |
|---|---|
| Article number | 10826 |
| Journal | Nature communications |
| Volume | 17 |
| Issue number | 1 |
| Publication status | Published - 15 Oct 2026 |
| Peer-reviewed | Yes |
External IDs
| PubMedCentral | PMC13672362 |
|---|---|
| Scopus | 105053786331 |
| ORCID | /0000-0003-1802-5145/work/232160533 |
Keywords
Keywords
- Animals, Ambystoma mexicanum/physiology, Regeneration/physiology, Extremities/physiology, Osteoclasts/metabolism, Amputation, Surgical, RANK Ligand/metabolism, Transcriptome