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Regeneration of Amputated Zebrafish Fin Rays from De Novo Osteoblasts
Open accessAbstract
SUMMARY Determining the cellular source of new skeletal elements is critical for understanding appendage regeneration in amphibians and fish. Recent lineage-tracing studies indicated that zebrafish fin ray bone regenerates through the de-differentiation and proliferation of spared osteoblasts, with limited if any contribution from other cell types. Here, we examined the requirement for this mechanism by using genetic ablation techniques to destroy virtually all skeletal osteoblasts in adult zebrafish fins. Animals survived this injury and restored the osteoblast population within two weeks. Moreover, amputated fins depleted of osteoblasts regenerated new fin ray structures at rates indistinguishable from fins possessing a resident osteoblast population. Inducible genetic fate-mapping confirmed that new bone cells do not arise from de-differentiated osteoblasts under these conditions. Our findings demonstrate diversity in the cellular origins of appendage bone, and reveal that de novo osteoblasts can fully support the regeneration of amputated zebrafish fins.
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Thorel, F., Népote, V., Avril, I., Kohno, K., Desgraz, R., Chera, S., & Herrera, P. L. (2010) · Nature · doi:10.1038/nature08894 · Cited by 1,136
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Metadata
- Authors
- Singh, S. P., Holdway, J. E., & Poss, K. D.
- Venue
- Developmental Cell
- Publisher
- Elsevier BV
- Published
- 2012-04
- Volume
- 22
- Issue
- 4
- Pages
- 879-886
- ISSN
- 1534-5807 (ISSN-L)
- OpenAlex
- W1975435540
- Cited by
- 203
- References
- 2
- FWCI
- 7.25
- Type
- journal article
- Language
- en
- Open access
- bronze
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