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Miglioli A, Tredez M, Boosten M, Sant C, Carvalho JE, Dru P, Canesi L, Schubert M, Dumollard R. The Mediterranean mussel Mytilus galloprovincialis: a novel model for developmental studies in mollusks. Development 2024; 151:dev202256. [PMID: 38270401 DOI: 10.1242/dev.202256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 01/18/2024] [Indexed: 01/26/2024]
Abstract
A model organism in developmental biology is defined by its experimental amenability and by resources created for the model system by the scientific community. For the most powerful invertebrate models, the combination of both has already yielded a thorough understanding of developmental processes. However, the number of developmental model systems is still limited, and their phylogenetic distribution heavily biased. Members of one of the largest animal lineages, the Spiralia, for example, have long been neglected. In order to remedy this shortcoming, we have produced a detailed developmental transcriptome for the bivalve mollusk Mytilus galloprovincialis, and have expanded the list of experimental protocols available for this species. Our high-quality transcriptome allowed us to identify transcriptomic signatures of developmental progression and to perform a first comparison with another bivalve mollusk: the Pacific oyster Crassostrea gigas. To allow co-labelling studies, we optimized and combined protocols for immunohistochemistry and hybridization chain reaction to create high-resolution co-expression maps of developmental genes. The resources and protocols described here represent an enormous boost for the establishment of Mytilus galloprovincialis as an alternative model system in developmental biology.
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Affiliation(s)
- Angelica Miglioli
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
| | - Marion Tredez
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
| | - Manon Boosten
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
- Laboratoire d'Océanologie de Villefranche (LOV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
| | - Camille Sant
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
- Laboratoire d'Océanologie de Villefranche (LOV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
| | - João E Carvalho
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
| | - Philippe Dru
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
| | - Laura Canesi
- Università degli Studi di Genova, Dipartimento di Scienze della Terra dell Ambiente e della Vita (DISTAV), Genova 16132, Italy
| | - Michael Schubert
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
| | - Rémi Dumollard
- Laboratoire de Biologie du Développement de Villefranche-sur-Mer (LBDV), Institut de la Mer de Villefranche (IMEV), Sorbonne Université, CNRS, Villefranche-sur-Mer 06230, France
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Lopez-Anido RN, Batzel GO, Ramirez G, Goodheart JA, Wang Y, Neal S, Lyons DC. Spatial-temporal expression analysis of lineage-restricted shell matrix proteins reveals shell field regionalization and distinct cell populations in the slipper snail Crepidula atrasolea. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.18.532128. [PMID: 36993573 PMCID: PMC10055211 DOI: 10.1101/2023.03.18.532128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Molluscs are one of the most morphologically diverse clades of metazoans, exhibiting an immense diversification of calcium carbonate structures, such as the shell. Biomineralization of the calcified shell is dependent on shell matrix proteins (SMPs). While SMP diversity is hypothesized to drive molluscan shell diversity, we are just starting to unravel SMP evolutionary history and biology. Here we leveraged two complementary model mollusc systems, Crepidula fornicata and Crepidula atrasolea , to determine the lineage-specificity of 185 Crepidula SMPs. We found that 95% of the adult C. fornicata shell proteome belongs to conserved metazoan and molluscan orthogroups, with molluscan-restricted orthogroups containing half of all SMPs in the shell proteome. The low number of C. fornicata -restricted SMPs contradicts the generally-held notion that an animal’s biomineralization toolkit is dominated by mostly novel genes. Next, we selected a subset of lineage-restricted SMPs for spatial-temporal analysis using in situ hybridization chain reaction (HCR) during larval stages in C. atrasolea . We found that 12 out of 18 SMPs analyzed are expressed in the shell field. Notably, these genes are present in 5 expression patterns, which define at least three distinct cell populations within the shell field. These results represent the most comprehensive analysis of gastropod SMP evolutionary age and shell field expression patterns to date. Collectively, these data lay the foundation for future work to interrogate the molecular mechanisms and cell fate decisions underlying molluscan mantle specification and diversification.
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Batzel GO, Moreno BK, Lopez LS, Nguyen CK, Livingston BT, Joester D, Lyons DC. Proteomic and Transcriptomic Analyses in the Slipper Snail Crepidula
fornicata Uncover Shell Matrix Genes Expressed During Adult and Larval Biomineralization. Integr Org Biol 2022; 4:obac023. [PMID: 35968217 PMCID: PMC9365450 DOI: 10.1093/iob/obac023] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 05/18/2022] [Indexed: 11/12/2022] Open
Abstract
The gastropod shell is a composite composed of minerals and shell matrix proteins (SMPs). SMPs have been identified by proteomics in many molluscs, but few have been studied in detail. Open questions include (1) what gene regulatory networks regulate SMP expression, (2) what roles individual SMPs play in biomineralization, and (3) how the complement of SMPs changes over development. These questions are best addressed in a species in which gene perturbation studies are available; one such species is the slipper snail, Crepidula fornicata. Here, SEM and pXRD analysis demonstrated that the adult shell of C. fornicata exhibits crossed lamellar microstructure and is composed of aragonite. Using high-throughput proteomics we identified 185 SMPs occluded within the adult shell. Over half of the proteins in the shell proteome have known biomineralization domains, while at least 10% have no homologs in public databases. Differential gene expression analysis identified 20 SMP genes that are up-regulated in the shell-producing mantle tissue. Over half of these 20 SMPs are expressed during development with two, CfSMP1 and CfSMP2, expressed exclusively in the shell gland. Together, the description of the shell microstructure and a list of SMPs now sets the stage for studying the consequences of SMP gene knockdowns in molluscs.
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Affiliation(s)
- G O Batzel
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography , UCSD, La Jolla, CA 92037, USA
| | - B K Moreno
- Department of Materials Science and Engineering, Northwestern University , Evanston, IL 60208, USA
| | - L S Lopez
- Department of Biological Sciences, California State University , Long Beach, CA 90802, USA
| | - C K Nguyen
- Department of Biological Sciences, California State University , Long Beach, CA 90802, USA
| | - B T Livingston
- Department of Biological Sciences, California State University , Long Beach, CA 90802, USA
| | - D Joester
- Department of Materials Science and Engineering, Northwestern University , Evanston, IL 60208, USA
| | - D C Lyons
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography , UCSD, La Jolla, CA 92037, USA
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