Can Scorpion Venom Peptides Be Safely Used in Cardiovascular Therapy: A Systematic Review

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  Can Scorpion Venom Peptides Be Safely Used in Cardiovascular Therapy: A Systematic Review Abstract Scorpion venom contains numerous bioactive peptides with potent cardiovascular effects, including bradykinin-potentiating peptides (BPPs), ion channel modulators, and cardioprotective molecules. These peptides show promise for conditions such as hypertension, cardiac injury, and arrhythmias. However, concerns regarding toxicity, immunogenicity, and off-target actions have limited their clinical development. This systematic review evaluates the therapeutic potential and safety of scorpion venom peptides for cardiovascular applications. A systematic search of PubMed, Scopus, Google Scholar, and Semantic Scholar identified 1,141 articles. Screening of 463 abstracts and full-text review of 446 eligible studies resulted in 17 publications meeting the inclusion criteria. Extracted data included mechanisms, efficacy, toxicity, and translational challenges. BPPs consistently demonstrated AC...

Exaptation of an evolutionary constraint enables behavioural control over the composition of secreted venom in a giant centipede

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Exaptation of an evolutionary constraint enables behavioural control over the composition of secreted venom in a giant centipede

Abstract

Venoms are biochemical arsenals that have emerged in numerous animal lineages, where they have co-evolved with morphological and behavioural traits for venom production and delivery. In centipedes, venom evolution is thought to be constrained by the morphological complexity of their venom glands due to physiological limitations on the number of toxins produced by their secretory cells. Here we show that the uneven toxin expression that results from these limitations have enabled Scolopendra morsitans to regulate the composition of their secreted venom despite the lack of gross morphologically complex venom glands. We show that this control is probably achieved by a combination of this heterogenous toxin distribution with a dual mechanism of venom secretion that involves neuromuscular innervation as well as stimulation via neurotransmitters. Our results suggest that behavioural control over venom composition may be an overlooked aspect of venom biology and provide an example of how exaptation can facilitate evolutionary innovation and novelty.

Schendel, V., Hamilton, B.R., Robinson, S.D. et al. Exaptation of an evolutionary constraint enables behavioural control over the composition of secreted venom in a giant centipede. Nat Ecol Evol (2024). https://doi.org/10.1038/s41559-024-02556-9