Abstract:
:Cnidarians are widely distributed basal metazoans that play an important role in the marine ecosystem. Their genetic diversity and dispersal depends on successful oogenesis, fertilization and embryogenesis. To understand the processes that lead to successful embryogenesis in these basal organisms, we conducted comparative proteomics on the model sea anemone Nematostella vectensis. We examined four developmental stages from oocyte maturation through early embryogenesis, as well as the oocyte jelly sac in which fertilization and embryogenesis take place. Our analysis revealed 37 stage-specifically expressed proteins, including cell cycle, cellular energy related and DNA replication proteins and transcription regulators. Using in situ hybridization, we show that within the mesenteria, two cell types support successful oocyte development and embryogenesis. Large somatic supporting cells synthesize vitellogenin, the most abundant egg yolk protein within the oocyte, whereas mesenteria gland cells synthesize mucin 5B, which was found to be the main component of the jelly sac. These findings shed light on the sexual reproduction program in cnidarians and suggest a high conservation with proteins governing oogenesis in Bilateria.
journal_name
Proteomicsjournal_title
Proteomicsauthors
Levitan S,Sher N,Brekhman V,Ziv T,Lubzens E,Lotan Tdoi
10.1002/pmic.201500255subject
Has Abstractpub_date
2015-12-01 00:00:00pages
4096-104issue
23-24eissn
1615-9853issn
1615-9861journal_volume
15pub_type
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