The neuropeptide complement of the marine annelid Platynereis dumerilii
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- 作者：Markus Conzelmann (6)
Elizabeth A Williams (6)
Karsten Krug (7)
Mirita Franz-Wachtel (7)
Boris Macek (7)
Gáspár Jékely (6) - 关键词：(3-0) ; Transcriptomics ; Peptidomics ; Lophotrochozoa ; Neurobiology ; Diuretic hormone ; Allatostatin ; Allatotropin ; Neuroendocrinology ; Proenkephalin
- 刊名：BMC Genomics
- 出版年：2013
- 出版时间：December 2013
- 年：2013
- 卷：14
- 期：1
- 全文大小：2,377 KB
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Elizabeth A Williams (6)
Karsten Krug (7)
Mirita Franz-Wachtel (7)
Boris Macek (7)
Gáspár Jékely (6)
6. Max Planck Institute for Developmental Biology, Spemannstrasse 35, 72076, Tübingen, Germany
7. Proteome Center Tübingen, University of Tübingen, Auf der Morgenstelle 15, 72076, Tübingen, Germany - ISSN：1471-2164
文摘
Background The marine annelid Platynereis dumerilii is emerging as a powerful lophotrochozoan experimental model for evolutionary developmental biology (evo-devo) and neurobiology. Recent studies revealed the presence of conserved neuropeptidergic signaling in Platynereis, including vasotocin/neurophysin, myoinhibitory peptide and opioid peptidergic systems. Despite these advances, comprehensive peptidome resources have yet to be reported. Results The present work describes the neuropeptidome of Platynereis. We established a large transcriptome resource, consisting of stage-specific next-generation sequencing datasets and 77,419 expressed sequence tags. Using this information and a combination of bioinformatic searches and mass spectrometry analyses, we increased the known proneuropeptide (pNP) complement of Platynereis to 98. Based on sequence homology to metazoan pNPs, Platynereis pNPs were grouped into ancient eumetazoan, bilaterian, protostome, lophotrochozoan, and annelid families, and pNPs only found in Platynereis. Compared to the planarian Schmidtea mediterranea, the only other lophotrochozoan with a large-scale pNP resource, Platynereis has a remarkably full complement of conserved pNPs, with 53 pNPs belonging to ancient eumetazoan or bilaterian families. Our comprehensive search strategy, combined with analyses of sequence conservation, also allowed us to define several novel lophotrochozoan and annelid pNP families. The stage-specific transcriptome datasets also allowed us to map changes in pNP expression throughout the Platynereis life cycle. Conclusion The large repertoire of conserved pNPs in Platynereis highlights the usefulness of annelids in comparative neuroendocrinology. This work establishes a reference dataset for comparative peptidomics in lophotrochozoans and provides the basis for future studies of Platynereis peptidergic signaling.