title: Various tolerances to arsenic trioxide between human cortical neurons and leukemic cells.
abstract: Arsenic trioxide (As2O3) is very effective for treatment of acute promyelocytic leukaemia (APL) but little can pass through the blood-brain-barrier (BBB), which limits its use in the prevention and treatment of central nervous system leukaemia (CNSL). Before creating a non-invasive method to help As2O3 's access, the safe and effective therapeutic concentration of As2O3 in the CNS ought to be known. The changes of apoptosis biomarkers, [Ca2+]i and PKC activity of both leukaemia cells and human cortical neurons, were monitored before and after being treated with As2O3 in vitro with laser confocal microscopy and Western blot. NSE concentration, the neuron invasive biomarker, was monitored by enzyme immunoassay (NSE-EIA). This study revealed that cortical neuron was more tolerable to As2O3 compared to NB4. 1.0 micromol / L As2O3 showed little influence on cortical neuron but effectively promoted apoptosis and induced differentiation of NB4.
authors.affiliation: The First Hospital of Harbin Medical University, Harbin 150001, China. jinzhouh85@163.com
authors.forename: Jin
authors.initials: J
authors.lastname: Zhou
authors.forename: Ran
authors.initials: R
authors.lastname: Meng
authors.forename: Xinhua
authors.initials: X
authors.lastname: Sui
authors.forename: Wenbin
authors.initials: W
authors.lastname: Li
authors.forename: Baofeng
authors.initials: B
authors.lastname: Yang
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D000077237:Arsenic Trioxide; D001152:Arsenicals / Q000494:pharmacology*; D002118:Calcium / Q000378:metabolism; D045744:Cell Line, Tumor; D002478:Cells, Cultured; D002540:Cerebral Cortex / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D006801:Humans; D007938:Leukemia / Q000188:drug therapy* / Q000378:metabolism / Q000473:pathology*; D009474:Neurons / Q000187:drug effects* / Q000378:metabolism; D010087:Oxides / Q000494:pharmacology*
chemical_list: D000970:Antineoplastic Agents; D001152:Arsenicals; D010087:Oxides; D000077237:Arsenic Trioxide; D002118:Calcium