Related Experiment Video
Updated: Mar 6, 2026
10:25
Extraction of Venom and Venom Gland Microdissections from Spiders for Proteomic and Transcriptomic Analyses
Published on: November 3, 2014
34.7K
Peptidomic and transcriptomic profiling of four distinct spider venoms
Vera Oldrati1,2, Dominique Koua1, Pierre-Marie Allard2
1Atheris SA, Chemin d'Alcire 1, Plan-les-Ouates, Geneva, Switzerland.
Plos One
|March 18, 2017
Summary
Venomics research reveals diverse cysteine-rich spider toxins, including Inhibitor Cysteine Knot (ICK) peptides. This study profiles toxins from four species, highlighting their conservation across families for potential drug discovery.
Area of Science:
- Biochemistry
- Genomics
- Pharmacology
Background:
- Venom research offers novel pharmacological tools and ingredients for various industries.
- Venomics, a systems biology approach, aids in understanding molecular biodiversity.
- Advances in omics technologies facilitate in-depth analysis of complex biological samples.
Purpose of the Study:
- To develop a rapid and efficient method for elucidating venom composition.
- To profile cysteine-rich peptide toxins from four phylogenetically distant spider species.
- To compare the diversity and conservation of Inhibitor Cysteine Knot (ICK) toxins.
Main Methods:
- Next-generation mRNA sequencing of venom glands.
- Liquid chromatography-tandem mass spectrometry (LC-MS/MS) proteome profiling.
- Bioinformatic analysis of comprehensive omics data.
Main Results:
- High-resolution profiling of 284 cysteine-rich peptides, with 111 belonging to the Inhibitor Cysteine Knot (ICK) motif.
- Identification of diverse toxin profiles across four species: H. davidbowie (95 peptides, 32 ICK), P. formosa (126 peptides, 52 ICK), V. fasciatus (49 peptides, 22 ICK), and L. mactans (14 peptides, 5 ICK).
- Demonstration of high conservation of ICK peptide families across different spider families.
Conclusions:
- The developed method enables efficient venom composition analysis.
- Spider venoms are rich sources of diverse cysteine-rich peptides, particularly ICK toxins.
- The identified ICK toxins show significant conservation, suggesting potential for broad pharmacological applications.
Related Concept Videos
01:33Proteomics
10.0K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
10.0K
01:33Peptide Identification Using Tandem Mass Spectrometry
8.7K
Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
8.7K