
12/08/2025
Scientists at the University of Bayreuth have used CRISPR gene editing to create spiders that spin silk glowing red under fluorescent light.
In the experiment, researchers injected spider embryos with DNA for a red fluorescent protein, enabling the silk to retain its natural strength and lightness while emitting a vivid red glow. The achievement, detailed in *Angewandte Chemie*, showcases CRISPR’s ability to reprogram organisms for both functional and visual traits.
While glowing spiders may sound like a novelty, the implications are significant. Spider silk is stronger than steel by weight and more eco-friendly than synthetics like Kevlar. Enhancing it through gene editing could lead to advanced materials for medicine, defense, and sustainable manufacturing. Since spiders are difficult to raise in large numbers due to their cannibalistic nature, researchers suggest silkworms could be engineered in the future for scalable production of modified silk.