Recombinant Human R-SPONDIN-1

R-Spondin-1 (RSPO-1) is a secreted growth factor that stabilizes ß-catenin and enhances WNT signaling. RSPO-1 is expressed in many tissues and regulates female sex determination, XX gonad development, oocyte differentiation, and hematopoietic stem cell specification. The RSPO-1 stabilization of ß-catenin promotes intestinal crypt cell proliferation. This suggests that RSPO-1 functions as a stem cell growth factor and may have therapeutic potential in the treatment of gastrointestinal diseases and chemotherapy-induced intestinal mucositis. Additionally, recombinant RSPO-1 protein is used to initiate and maintain intestinal organoid cultures.