Article (Scientific journals)
Next-Generation Sequencing for Venomics: Application of Multi-Enzymatic Limited Digestion for Inventorying the Snake Venom Arsenal
Gobbi Amorim, Fernanda; Redureau, Damien; Crasset, Thomas et al.
2023In Toxins, 15 (6), p. 357
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Keywords :
Health, Toxicology and Mutagenesis; Toxicology
Abstract :
[en] To improve the characterization of snake venom protein profiles, we report the application of a new generation of proteomic methodology to deeply characterize complex protein mixtures. The new approach, combining a synergic multi-enzymatic and a time-limited digestion (MELD), is a versatile and straightforward protocol previously developed by our group. The higher number of overlapping peptides generated during MELD increases the quality of downstream peptide sequencing and of protein identification. In this context, this work aims at applying the MELD strategy to a venomics purpose for the first time, and especially for the characterization of snake venoms. We used four venoms as the test models for this proof of concept: two Elapidae (Dendroaspis polylepis and Naja naja) and two Viperidae (Bitis arietans and Echis ocellatus). Each venom was reduced and alkylated before being submitted to two different protocols: the classical bottom-up proteomics strategy including a digestion step with trypsin only, or MELD, which combines the activities of trypsin, Glu-C and chymotrypsin with a limited digestion approach. The resulting samples were then injected on an M-Class chromatographic system, and hyphenated to a Q-Exactive Mass Spectrometer. Toxins and protein identification were performed by Peaks Studio X+. The results show that MELD considerably improves the number of sequenced (de novo) peptides and identified peptides from protein databases, leading to the unambiguous identification of a greater number of toxins and proteins. For each venom, MELD was successful, not only in terms of the identification of the major toxins (increasing of sequence coverage), but also concerning the less abundant cellular components (identification of new groups of proteins). In light of these results, MELD represents a credible methodology to be applied as the next generation of proteomics approaches dedicated to venomic analysis. It may open new perspectives for the sequencing and inventorying of the venom arsenal and should expand global knowledge about venom composition.
Disciplines :
Chemistry
Author, co-author :
Gobbi Amorim, Fernanda  ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.) ; Université de Liège - ULiège > Molecular Systems (MolSys)
Redureau, Damien ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.) ; Université de Liège - ULiège > Molecular Systems (MolSys)
Crasset, Thomas  ;  Université de Liège - ULiège > Faculté des Sciences > Master en sc. chimiques, à fin. ; ULiège - Université de Liège [BE] > MolSys Research Unit > Laboratory of Mass Spectrometry
Freuville, Lou ;  Université de Liège - ULiège > Molecular Systems (MolSys) ; Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.)
Baiwir, Dominique  ;  Université de Liège - ULiège > GIGA > GIGA Platforms ; Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.)
Mazzucchelli, Gabriel  ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.) ; Université de Liège - ULiège > Molecular Systems (MolSys)
Menzies, Stefanie K. ;  Centre for Snakebite Research and Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool L3 5QA, UK
Casewell, Nicholas R. ;  Centre for Snakebite Research and Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool L3 5QA, UK
Quinton, Loïc  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie biologique ; Université de Liège - ULiège > Molecular Systems (MolSys) ; Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de spectrométrie de masse (L.S.M.)
Language :
English
Title :
Next-Generation Sequencing for Venomics: Application of Multi-Enzymatic Limited Digestion for Inventorying the Snake Venom Arsenal
Publication date :
25 May 2023
Journal title :
Toxins
eISSN :
2072-6651
Publisher :
MDPI AG
Volume :
15
Issue :
6
Pages :
357
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
ERDF - European Regional Development Fund [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
EU - European Union [BE]
Funding number :
#899670
Funding text :
ADDovenom Project from European Union’s Horizon 2020 research and innovation program
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