Venom Mass Fingerprints for Species Delimitation, Reloaded: A Test Case with Italian Scorpions (Euscorpius)

Posted by
  Venom Mass Fingerprints for Species Delimitation, Reloaded: A Test Case with Italian Scorpions (Euscorpius) Abstract Scorpion venoms are complex mixtures of bioactive compounds including proteins, peptides and enzymes. Although venoms exhibit substantial intraspecific variation, some compounds appear to be species-specific, highlighting their potential as chemotaxonomic markers. Venom mass fingerprints (MFPs) derived from Matrix-Assisted Laser Desorption/Ionization Time-of-Flight (MALDI-TOF) Mass Spectrometry (MS) have been proposed as a means of delimiting species. However, their utility for species delimitation has rarely been evaluated against independent sources of taxonomic evidence. In the present study, the performance of MALDI-TOF MS-based venom peptide barcoding (mass ranges of m/z 800‒4500 and m/z 3000‒10,000) was assessed in 52 populations of eight Italian species of the scorpion genus Euscorpius Thorell, 1876, representing different levels of evolutionary divergenc...

Immunomodulatory properties of venom-derived crotamine

Posted by

 


Immunomodulatory properties of venom-derived crotamine

Abstract

Crotamine is a low-molecular-weight cationic polypeptide isolated from Crotalus durissus terrificus snake venom, classified as a non-enzymatic toxin with distinctive structural and functional properties. This toxin also exhibits characteristics of a cell-penetrating peptide, owing to its ability to translocate across biological membranes in a largely non-specific manner and to deliver diverse molecular cargos into cells. Beyond its well-established internalization capacity, emerging evidence suggests that crotamine exerts immunomodulatory effects. In our mini review, we discuss current advances in understanding crotamine as a venom-derived immunomodulatory peptide, highlighting its structural similarities with host defense peptides, its interactions with immune cells, and its potential applications in immunotherapy and drug delivery.

Oliveira, I. S., Ferreira, I. G., Sousa, L., Alberghini-dos-Santos, J., Cerni, F. A., & Pucca, M. B. (2026). Immunomodulatory properties of venom-derived crotamine. Frontiers in Pharmacology, 17, 1860014. https://doi.org/10.3389/fphar.2026.1860014