Neuropeptidomics of the mosquito Aedes aegypti

Reinhard Predel, Susanne Neupert, Stephen F. Garczynski, Joe W. Crim, Mark R. Brown, William K. Russell, Jǒrg Kahnt, David H. Russell, Ronald J. Nachman

Research output: Contribution to journalArticle

91 Scopus citations

Abstract

Neuropeptidomic data were collected on the mosquito Ae. aegypti, which is considered the most tractable mosquito species for physiological and endocrine studies. The data were solely obtained by direct mass spectrometric profiling, including tandem fragmentation, of selected tissues from single specimens, which yielded a largely complete accounting of the putative bioactive neuropeptides; truncated neuropeptides with low abundance were not counted as mature peptides. Differential processing within the CNS was detected for the CAPA-precursor, and differential post-translational processing (pyroglutamate formation) was detected for AST-C and CAPA-PVK-2. For the first time in insects, we succeeded in the direct mass spectrometric profiling of midgut tissue which yielded a comprehensive and immediate overview of the peptides involved in the endocrine system of the gut. Head peptides which were earlier identified as the most abundant RFamides of Ae. aegypti, were not detected in any part of the CNS or midgut. This study provides a framework for future investigations on mosquito endocrinology and neurobiology. Given the high sequence similarity of neuropeptide precursors identified in other medically important mosquitoes, conclusions regarding the peptidome of Ae. aegypti likely are applicable to these mosquitoes.

Original languageEnglish (US)
Pages (from-to)2006-2015
Number of pages10
JournalJournal of Proteome Research
Volume9
Issue number4
DOIs
StatePublished - Apr 5 2010
Externally publishedYes

Keywords

  • Aedes aegypti
  • CAPA-peptides
  • Culicidae
  • Insect neuropeptides
  • MALDI-TOF
  • Midgut
  • Peptidomics

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)

Fingerprint Dive into the research topics of 'Neuropeptidomics of the mosquito Aedes aegypti'. Together they form a unique fingerprint.

  • Cite this

    Predel, R., Neupert, S., Garczynski, S. F., Crim, J. W., Brown, M. R., Russell, W. K., Kahnt, J., Russell, D. H., & Nachman, R. J. (2010). Neuropeptidomics of the mosquito Aedes aegypti. Journal of Proteome Research, 9(4), 2006-2015. https://doi.org/10.1021/pr901187p