The GUCY2C Tumor Suppressor is the Nexus of a Paracrine Hormone Axis Preventing Radiotherapy-Induced Gastrointestinal (GI) Toxicity

Authors

E. J. Wuthrick, Thomas Jefferson University and HospitalsFollow
P. Li, Thomas Jefferson University and Hospitals
J. E. Lin, Thomas Jefferson University and Hospitals
A. P. Dicker, Thomas Jefferson University and HospitalsFollow
D. Leeper, Thomas Jefferson University and HospitalsFollow
S. A. Waldman, Thomas Jefferson University and HospitalsFollow

Abstract

Purpose/Objective: Radiation-induced GI toxicity is the primary dose limitation compromising therapy in cancer patients treated with radiation therapy. GUCY2C is the intestinal receptor for diarrheagenic bacterial enterotoxins and the endogenous paracrine hormones guanylin and uroguanylin. Following genomic insult, cyclic (c)GMP produced by ligand activation of GUCY2C enhances DNA damage sensing and repair in intestinal cells. Here, we show that the GUCY2C-cGMP axis mediates p53-dependent radioprotection of intestinal epithelial cells.

American Society for Therapeutic Radiation Oncology (ASTRO) 52nd Annual Meeting October 31 - November 4, San Diego, CA

Recommended Citation

Wuthrick, E. J.; Li, P.; Lin, J. E.; Dicker, A. P.; Leeper, D.; and Waldman, S. A. (2010) "The GUCY2C Tumor Suppressor is the Nexus of a Paracrine Hormone Axis Preventing Radiotherapy-Induced Gastrointestinal (GI) Toxicity," Bodine Journal: Vol. 3: Iss. 1, Article 44.
DOI: https://doi.org/10.29046/TBJ.003.1.043
Available at: https://jdc.jefferson.edu/bodinejournal/vol3/iss1/44