Chapter title |
Identification, Quantitation, and Imaging of the Crustacean Peptidome
|
---|---|
Chapter number | 17 |
Book title |
Peptidomics
|
Published by |
Springer New York, February 2018
|
DOI | 10.1007/978-1-4939-7537-2_17 |
Pubmed ID | |
Book ISBNs |
978-1-4939-7536-5, 978-1-4939-7537-2
|
Authors |
Kellen DeLaney, Amanda Buchberger, Lingjun Li |
Abstract |
Crustaceans serve as a useful, simplified model for studying peptides and neuromodulation, as they contain numerous neuropeptide homologs to mammals and enable electrophysiological studies at the single-cell and neural circuit levels. In particular, crustaceans contain well-defined neural networks, including the stomatogastric ganglion, esophageal ganglion, commissural ganglia, and several neuropeptide-rich organs, such as the brain, pericardial organs, and sinus glands. Due to the lack of a genomic database for crustacean peptides, an important step of crustacean peptidomics involves the discovery and identification of novel peptides and the construction of a database, more recently with the aid of mass spectrometry (MS). Herein, we present a general workflow and detailed methods for MS-based peptidomic analysis of crustacean tissue samples and circulating fluids. In conjunction with profiling, quantitation can also be performed with isotopic or isobaric labeling. Information regarding the localization patterns and changes of peptides can be studied via mass spectrometry imaging. Combining these sample preparation strategies and MS analytical techniques allows for a multifaceted approach to obtaining deep knowledge of crustacean peptidergic signaling pathways. |
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