title: Distinctive molecular signaling in triple-negative breast cancer cell death triggered by hexadecylphosphocholine (miltefosine).
abstract: This study describes the molecular signaling involved in the different cell death modes of triple-negative breast cancer cells induced by hexadecylphosphocholine (HePC/miltefosine), a clinically relevant anticancer alkylphosphocholine. We found that the HePC treatment triggers cell-type-dependent apoptotic and non-apoptotic cell death processes. Moreover, the expression level of the apoptosis activator Fas, and Fas/Fas ligand signaling capacity are not attributing factors for the preference toward apoptosis. Using Fas siRNA and overexpression approaches we establish that Fas is not a pro-apoptotic factor but a contributor to cell protection in HePC-apoptosis-sensitive cells. The insight in the multi-modal anticancer capability of HePC in triple-negative breast cancer cells may facilitate the targeted design of therapeutic strategies against triple-negative breast cancers.
authors.affiliation: Equipe labelisée La Ligue, Institute of Signaling Developmental Biology and Cancer Research, CNRS UMR 6543, Centre A. Lacassagne, 33 Avenue de Valombrose, 06189 Nice, France.
authors.forename: Krittalak
authors.initials: K
authors.lastname: Chakrabandhu
authors.forename: Sébastien
authors.initials: S
authors.lastname: Huault
authors.forename: Anne-Odile
authors.initials: AO
authors.lastname: Hueber
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D017209:Apoptosis / Q000235:genetics; D001943:Breast Neoplasms / Q000378:metabolism* / Q000473:pathology*; D045744:Cell Line, Tumor; D053222:Fas Ligand Protein / Q000235:genetics / Q000378:metabolism; D006801:Humans; D010767:Phosphorylcholine / Q000031:analogs & derivatives* / Q000494:pharmacology; D051057:Proto-Oncogene Proteins c-akt / Q000378:metabolism; D034741:RNA, Small Interfering / Q000235:genetics; D015398:Signal Transduction / Q000187:drug effects; D019014:fas Receptor / Q000235:genetics / Q000378:metabolism; D048051:p38 Mitogen-Activated Protein Kinases / Q000378:metabolism
chemical_list: D000970:Antineoplastic Agents; D053222:Fas Ligand Protein; D034741:RNA, Small Interfering; D019014:fas Receptor; D010767:Phosphorylcholine; C039128:miltefosine; D051057:Proto-Oncogene Proteins c-akt; D048051:p38 Mitogen-Activated Protein Kinases