1
|
Oliveira CR, Knapp D, Elewa A, Gerber T, Gonzalez Malagon SG, Gates PB, Walters HE, Petzold A, Arce H, Cordoba RC, Subramanian E, Chara O, Tanaka EM, Simon A, Yun MH. Tig1 regulates proximo-distal identity during salamander limb regeneration. Nat Commun 2022; 13:1141. [PMID: 35241664 PMCID: PMC8894484 DOI: 10.1038/s41467-022-28755-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 02/10/2022] [Indexed: 12/22/2022] Open
Abstract
Salamander limb regeneration is an accurate process which gives rise exclusively to the missing structures, irrespective of the amputation level. This suggests that cells in the stump have an awareness of their spatial location, a property termed positional identity. Little is known about how positional identity is encoded, in salamanders or other biological systems. Through single-cell RNAseq analysis, we identified Tig1/Rarres1 as a potential determinant of proximal identity. Tig1 encodes a conserved cell surface molecule, is regulated by retinoic acid and exhibits a graded expression along the proximo-distal axis of the limb. Its overexpression leads to regeneration defects in the distal elements and elicits proximal displacement of blastema cells, while its neutralisation blocks proximo-distal cell surface interactions. Critically, Tig1 reprogrammes distal cells to a proximal identity, upregulating Prod1 and inhibiting Hoxa13 and distal transcriptional networks. Thus, Tig1 is a central cell surface determinant of proximal identity in the salamander limb. The mechanisms by which cells determine their position within the 3D space are poorly understood. Research in salamanders offers fresh insights into this question, uncovering Tig1 as a central determinant of proximo-distal identity in regeneration.
Collapse
Affiliation(s)
- Catarina R Oliveira
- Technische Universität Dresden, CRTD/Center for Regenerative Therapies Dresden, Dresden, Germany
| | - Dunja Knapp
- Technische Universität Dresden, CRTD/Center for Regenerative Therapies Dresden, Dresden, Germany.
| | - Ahmed Elewa
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Tobias Gerber
- European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Sandra G Gonzalez Malagon
- Institute of Structural and Molecular Biology, University College London, London, UK.,Biomedical Research Institute, Foundation for Research and Technology, University of Ioannina Campus, 45115, Ioannina, Greece
| | - Phillip B Gates
- Institute of Structural and Molecular Biology, University College London, London, UK
| | - Hannah E Walters
- Technische Universität Dresden, CRTD/Center for Regenerative Therapies Dresden, Dresden, Germany
| | - Andreas Petzold
- Technische Universität Dresden, CRTD/Center for Regenerative Therapies Dresden, Dresden, Germany
| | - Hernan Arce
- Systems Biology Group, Institute of Physics of Liquids and Biological Systems, National Scientific and Technical Research Council (CONICET) and University of La Plata, La Plata, Argentina.,Instituto de Tecnología, Universidad Argentina de la Empresa (UADE), Buenos Aires, Argentina
| | - Rodrigo C Cordoba
- Systems Biology Group, Institute of Physics of Liquids and Biological Systems, National Scientific and Technical Research Council (CONICET) and University of La Plata, La Plata, Argentina
| | | | - Osvaldo Chara
- Systems Biology Group, Institute of Physics of Liquids and Biological Systems, National Scientific and Technical Research Council (CONICET) and University of La Plata, La Plata, Argentina.,Instituto de Tecnología, Universidad Argentina de la Empresa (UADE), Buenos Aires, Argentina.,Technische Universität Dresden, Center for Information Services and High Performance Computing ZIH, Dresden, Germany
| | - Elly M Tanaka
- Institute of Molecular Pathology, Vienna Biocenter, Vienna, Austria
| | - András Simon
- Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Maximina H Yun
- Technische Universität Dresden, CRTD/Center for Regenerative Therapies Dresden, Dresden, Germany. .,Max Planck Institute for Molecular Cell Biology and Genetics, Dresden, Germany.
| |
Collapse
|