1
|
Vila-Farré M, Rozanski A, Ivanković M, Cleland J, Brand JN, Thalen F, Grohme MA, von Kannen S, Grosbusch AL, Vu HTK, Prieto CE, Carbayo F, Egger B, Bleidorn C, Rasko JEJ, Rink JC. Evolutionary dynamics of whole-body regeneration across planarian flatworms. Nat Ecol Evol 2023; 7:2108-2124. [PMID: 37857891 PMCID: PMC10697840 DOI: 10.1038/s41559-023-02221-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 09/14/2023] [Indexed: 10/21/2023]
Abstract
Regenerative abilities vary dramatically across animals. Even amongst planarian flatworms, well-known for complete regeneration from tiny body fragments, some species have restricted regeneration abilities while others are almost entirely regeneration incompetent. Here, we assemble a diverse live collection of 40 planarian species to probe the evolution of head regeneration in the group. Combining quantification of species-specific head-regeneration abilities with a comprehensive transcriptome-based phylogeny reconstruction, we show multiple independent transitions between robust whole-body regeneration and restricted regeneration in freshwater species. RNA-mediated genetic interference inhibition of canonical Wnt signalling in RNA-mediated genetic interference-sensitive species bypassed all head-regeneration defects, suggesting that the Wnt pathway is linked to the emergence of planarian regeneration defects. Our finding that Wnt signalling has multiple roles in the reproductive system of the model species Schmidtea mediterranea raises the possibility that a trade-off between egg-laying, asexual reproduction by fission/regeneration and Wnt signalling drives regenerative trait evolution. Although quantitative comparisons of Wnt signalling levels, yolk content and reproductive strategy across our species collection remained inconclusive, they revealed divergent Wnt signalling roles in the reproductive system of planarians. Altogether, our study establishes planarians as a model taxon for comparative regeneration research and presents a framework for the mechanistic evolution of regenerative abilities.
Collapse
Affiliation(s)
- Miquel Vila-Farré
- Department of Tissue Dynamics and Regeneration, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany.
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany.
| | - Andrei Rozanski
- Department of Tissue Dynamics and Regeneration, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Mario Ivanković
- Department of Tissue Dynamics and Regeneration, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - James Cleland
- Department of Tissue Dynamics and Regeneration, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Jeremias N Brand
- Department of Tissue Dynamics and Regeneration, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Felix Thalen
- Animal Evolution and Biodiversity, Georg-August-Universität Göttingen, Göttingen, Germany
- Cardio-CARE, Medizincampus Davos, Davos, Switzerland
| | - Markus A Grohme
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | | | | | - Hanh T-K Vu
- Department of Tissue Dynamics and Regeneration, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
- European Molecular Biology Laboratory, Heidelberg, Germany
| | - Carlos E Prieto
- Department of Zoology & Animal Cell Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Fernando Carbayo
- Laboratório de Ecologia e Evolução. Escola de Artes, Ciências e Humanidades, Universidade de São Paulo, São Paulo, Brazil
| | - Bernhard Egger
- Department of Zoology, University of Innsbruck, Innsbruck, Austria
| | - Christoph Bleidorn
- Animal Evolution and Biodiversity, Georg-August-Universität Göttingen, Göttingen, Germany
| | - John E J Rasko
- Gene and Stem Cell Therapy Program Centenary Institute, Camperdown, New South Wales, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
- Cell & Molecular Therapies, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Jochen C Rink
- Department of Tissue Dynamics and Regeneration, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany.
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany.
| |
Collapse
|
3
|
Martinez R, Schackert HK, von Kannen S, Lichter P, Joos S, Schackert G. Independent molecular development of metachronous glioblastomas with extended intervening recurrence-free interval. Brain Pathol 2004; 13:598-607. [PMID: 14655763 PMCID: PMC8095935 DOI: 10.1111/j.1750-3639.2003.tb00488.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Two metachronous glioblastomas with different cerebral locations in a 53-year-old long-term survival patient were analyzed by multiple genetic approaches. Using comparative genomic hybridization a different pattern of chromosomal aberrations was observed, with 19 imbalances in the first tumor and only 2 imbalances in the second. Sequence analysis revealed a distinct mutation profile in each tumor, with amino acid substitutions in the p53 and PTEN genes only in the first tumor, ie, p53 in codon 273 (CGT-->TGT, Arg-->Cys) and PTEN in codon 336 (TAC-->TTC, Tyr-->Phe). A splicing acceptor site PTEN mutation (IVS8-2A>G) was observed only in the second GBM. EGFR amplification, mutations of p16INK4a/CDKN2A or p14ARF were not observed. According to the results of p53 mutational analysis and EGFR amplification studies, the first tumor is classified as a type 1 GBM, whereas the alterations in the second one are different from those typically encountered in type 1 or type 2 tumors. In conclusion, our data strongly suggest that the metachronous tumors in this patient are exceptional in that they developed independently from each other. Whether the molecular features of the first glioblastoma are associated with the notably extended recurrence-free period of 5 years remains to be elucidated.
Collapse
Affiliation(s)
- Ramon Martinez
- Department of Neurosurgery, University of Dresden, Germany.
| | | | | | | | | | | |
Collapse
|