TY - JOUR T1 - IPSE, a parasite-derived host immunomodulatory protein, is a promising therapeutic for hemorrhagic cystitis JF - bioRxiv DO - 10.1101/400424 SP - 400424 AU - Rebecca S. Zee AU - Evaristus C. Mbanefo AU - Loc H. Le AU - Luke F. Pennington AU - Justin Odegaard AU - Theodore S. Jardetzky AU - Abdulaziz Alouffi AU - Jude Akinwale AU - Franco H. Falcone AU - Michael H. Hsieh Y1 - 2018/01/01 UR - http://biorxiv.org/content/early/2018/08/25/400424.abstract N2 - Chemotherapy-induced hemorrhagic cystitis is characterized by bladder pain and voiding dysfunction caused by hemorrhage and inflammation. Of currently available therapies, prophylactic 2-mercaptoethanesulfonic acid (MESNA) has limited efficacy and cannot treat pre-existing lesions. Therefore, novel therapeutic options to treat hemorrhagic cystitis are needed. We previously reported that systemic administration of the Schistosomiasis haematobium-derived protein H-IPSEH06 (IL-4-inducing principle from Schistosoma mansoni eggs), is superior to 3 doses of MESNA in alleviating hemorrhagic cystitis. Based on prior reports by others on S. mansoni IPSE and additional work by our group, we reasoned that H-IPSEH06 mediates its effects on hemorrhagic cystitis by binding IgE on basophils and inducing IL-4 expression, promoting urothelial proliferation, and translocating to the nucleus to modulate expression of genes implicated in relieving bladder dysfunction. We speculated that local bladder injection of the S. haematobium IPSE ortholog IPSEH03, hereafter called H-IPSEH03, might be more efficacious in preventing hemorrhagic cystitis compared to systemic administration of IPSEH06. We demonstrate herein that H-IPSEH03 is a promising therapeutic for the treatment of voiding dysfunction and bladder pain in hemorrhagic cystitis. Namely, it attenuates ifosfamide-induced increases in bladder wet weight in an IL-4-dependent fashion. H-IPSEH03 relieves hemorrhagic cystitis-associated allodynia. Finally, H-IPSEH03 drives increased urothelial cell proliferation. This indicates that IPSE induces bladder healing mechanisms, which suggests that it may be a novel non-opioid analgesic to treat bladder pain syndromes.AbbrevationsCFSE5-(and 6)-Carboxyfluorescein diacetate succinimidyl esterIPSEInterleukin-4 inducing principle from Schistosoma mansoni eggsMESNA2-mercaptoethanesulfonic acidNLSNuclearlocalization sequence ER -