Responding to R-Spondin: Slit2 Potentiates Intestinal Regeneration

Gastrointestinal toxicity of chemoradiotherapy treatment in late-stage cancer patients limits tolerable doses and effectiveness of treatments. Zhou and colleagues in Nature (Zhou et al., 2013) suggest that activating Robo/Slit signaling in concert with R-Spondin potentiates Wnt signaling in intestinal stem cells and drives successful intestinal regeneration and recovery.