RT Journal Article T1 Neurokinin-1 Receptor Antagonists against Hepatoblastoma. A1 Muñoz, Miguel A1 Rosso, Marisa A1 Coveñas, Rafael K1 NK-1 receptor K1 angiogenesis K1 antitumor K1 apoptosis K1 aprepitant K1 hepatoblastoma K1 substance P AB Hepatoblastoma (HB) is the most common malignant liver tumor that occurs during childhood. The prognosis of children with HB is favorable when a complete surgical resection of the tumor is possible, but for high-risk patients, the prognosis is much worse. New anti-HB strategies must be urgently developed. The undecapeptide substance P (SP) after binding to the neurokinin-1 receptor (NK-1R), regulates cancer cell proliferation, exerts an antiapoptotic effect, induces cell migration for invasion/metastasis, and triggers endothelial cell proliferation for neoangiogenesis. HB samples and cell lines overexpress NK-1R (the truncated form) and SP elicits HB cell proliferation. One of these strategies could be the use of non-peptide NK-1R antagonists. These antagonists exert, in a concentration-dependent manner, an antiproliferative action against HB cells (inhibit cell proliferation and induce the death of HB cells by apoptosis). NK-1R antagonists exerted a dual effect in HB: Decreased both tumor volume and angiogenic activity. Thus, the SP/NK-1R system is an important target in the HB treatment and NK-1R antagonists could act as specific drugs against HB cells. In this review, we update and discuss the use of NK-1R antagonists in the treatment of HB. SN 2072-6694 YR 2019 FD 2019-08-28 LK http://hdl.handle.net/10668/14456 UL http://hdl.handle.net/10668/14456 LA en DS RISalud RD Apr 6, 2025