Parallel identification of novel antimicrobial peptide sequences from multiple anuran species by targeted DNA sequencing.

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ID: 770
2018
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Abstract
Antimicrobial peptides (AMPs) are multifunctional effector molecules that often combine direct antimicrobial activities with signaling or immunomodulatory functions. The skin secretions of anurans contain a variety of such bioactive peptides. The identification of AMPs from frog species often requires sacrificing several specimens to obtain small quantities of crude peptides, followed by activity based fractionation to identify the active principles.We report an efficient alternative approach to selectively amplify AMP-coding transcripts from very small amounts of tissue samples, based on RNA extraction and cDNA synthesis, followed by PCR amplification and high-throughput sequencing of size-selected amplicons. This protocol exploits the highly conserved signal peptide region of the AMP precursors from Ranidae, Hylidae and Bombinatoridae for the design of family-specific, forward degenerate primers, coupled with a reverse primer targeting the mRNA poly-A tail.Analysis of the assembled sequencing output allowed to identify more than a hundred full-length mature peptides, mostly from Ranidae species, including several novel potential AMPs for functional characterization. This (i) confirms the effectiveness of the experimental approach and indicates points for protocol optimization to account for particular cases, and (ii) encourages the application of the same methodology to other multigenic AMP families, also from other genera, sharing common features as in anuran AMPs.
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rončević2018parallel Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Rončević, Tomislav;Gerdol, Marco;Spazzali, Francesca;Florian, Fiorella;Mekinić, Stjepan;Tossi, Alessandro;Pallavicini, Alberto;
Journal BMC genomics
Year 2018
DOI
10.1186/s12864-018-5225-5
URL
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