Researchers at the University of Maryland have identified a novel approach to developing antivenoms by leveraging toxin-blocking proteins naturally present in western diamondback rattlesnake blood. The study, led by Distinguished University Professor of Biology Sean B. Carroll and published in the Proceedings of the National Academy of Sciences, demonstrates that specific protein combinations derived from rattlesnake blood provide unusually strong protection against venoms from multiple dangerous snake species. These protein mixtures exhibited approximately tenfold greater potency than existing sheep-derived rattlesnake antivenoms and offered broad-spectrum neutralization of lethal effects across various viper species, suggesting a promising avenue for more effective antivenom development.

The research builds upon the discovery of a protein called FETUA-3, which can inhibit metalloproteinase toxins found in rattlesnake venom. While individual FETUA proteins showed limited efficacy in preventing death from venomous bites, combinations of these proteins dramatically enhanced protective capabilities. The complexity of snake venom, which can contain around 100 different toxin proteins varying between species, necessitates the optimization of protein mixtures to achieve comprehensive protection. The conservation of certain inhibitory protein components over 50 million years of snake evolution underscores the evolutionary significance of this natural defense mechanism. The researchers are now applying this strategy to target additional toxin families, with the ultimate goal of creating nature-based, recombinant antivenoms that are safer, more cost-effective, and easier to produce at scale compared to current treatments. Source

This is a summary. Read the original at sciencedaily.com.