Open AccessMass Spectrometric Profiling of Neuropeptides in Callinectes sapidus during Hypoxia Stress
Author(s) -
Amanda Rae Buchberger,
Kellen DeLaney,
Yang Liu,
Nhu Q. Vu,
Kylie Helfenbein,
Lingjun Li
Publication year - 2020
Publication title -
acs chemical neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.158
H-Index - 69
ISSN - 1948-7193
DOI - 10.1021/acschemneuro.0c00439
Subject(s) - neuropeptide , hypoxia (environmental) , biology , callinectes , stressor , crustacean , organism , neuropeptide y receptor , neuroscience , endocrinology , microbiology and biotechnology , medicine , receptor , ecology , chemistry , oxygen , biochemistry , genetics , organic chemistry
Oxygen (O 2 ) is a critical component of life; without proper O 2 levels, cells are unable to respire, meaning glucose cannot be utilized. Thus, hypoxia (low O 2 levels) is a well-documented stressor, especially in aquatic environments. Neuropeptides are a major class of regulators for stress-induced responses; however, their global expression changes during stress are not well characterized due to the natural complexity of the nervous system. Beyond being a neurological model organism, crustaceans are regularly exposed to hypoxia, making them a relevant system for this study. Several neuropeptide families, including orcokinins, RFamides, and allatostatin A-types, show dynamic dysregulation due to hypoxic stress. In particular, the brain showed the most dynamic changes with a survival mechanism "switching" (i.e., significant increase to decrease) of neuropeptide content between moderate and severe hypoxia (e.g., NFDEDRSGFA, FDAFTTGFGHS, NRNFLRFamide, and APSGFLGMRamide). Globally, neuropeptides in different tissues appeared to exhibit unique expression patterns at the various severities of hypoxia, including LSSSNSPSSTPL and NFDEIDRSSFGF. Overall, this study provides clear evidence for the benefits of globally analyzing biomolecules and that neuropeptides play a critical role in how crustaceans adapt due to hypoxic stress.