title: Pyridoacridine alkaloids inducing neuronal differentiation in a neuroblastoma cell line, from marine sponge Biemna fortis.
abstract: A new and three known pyridoacridine alkaloids were isolated from the Indonesian marine sponge Biemna fortis as neuronal differentiation inducers against a murine neuroblastoma cell line, Neuro 2A. The chemical structure of the new compound, labuanine A (1), was determined by spectroscopic study and chemical conversion. These pyridoacridine alkaloids induced multipolar neuritogenesis in more than 50% of cells at 0.03-3 micro M concentration. Compound 3, which showed the strongest neuritogenic activity among them, also induced increase of acetylcholinesterase, a neuronal marker in Neuro 2A and arrested cell cycle at the G2/M phase.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Osaka University, Yamada-oka 1-6, Suita, Osaka 565-0871, Japan.
authors.forename: Shunji
authors.initials: S
authors.lastname: Aoki
authors.forename: Hong
authors.initials: H
authors.lastname: Wei
authors.forename: Kouhei
authors.initials: K
authors.lastname: Matsui
authors.forename: Rachmaniar
authors.initials: R
authors.lastname: Rachmat
authors.forename: Motomasa
authors.initials: M
authors.lastname: Kobayashi
mesh_terms: D000166:Acridines / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D000818:Animals; D002454:Cell Differentiation / Q000187:drug effects* / Q000502:physiology; D045744:Cell Line, Tumor / Q000166:cytology / Q000187:drug effects; D002471:Cell Transformation, Neoplastic / Q000187:drug effects / Q000473:pathology; D051379:Mice; D009447:Neuroblastoma; D009474:Neurons / Q000166:cytology / Q000187:drug effects*; D010618:Phenanthrolines / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D011161:Porifera
chemical_list: D000166:Acridines; D000470:Alkaloids; D010618:Phenanthrolines; C475900:pyridoacridine