AIM: To characterize neurotoxicity induced by oxaliplatin, bortezomib, and epothilone-B as well as protection against their neurotoxicity using an in vitro model. MATERIALS AND METHODS: Neurotoxicity was evaluated using the neurite outgrowth method in PC12 rat pheochromo-cytoma cells differentiated towards a mature neuronal phenotype, while neuroprotection was explored by simultaneous exposure to 0.5 mM amifostine. The potential markers of neuronal differentiation, cyclin-B2 (Ccnb2) and baculoviral inhibitor of apoptosis repeat-containing 5 (Birc5), were evaluated by quantitative reverse transcription polymerase chain reaction (RT-PCR). RESULTS: Bortezomib, epothilone-B, and oxaliplatin reduced neurite length to 68%, 78% and 66%, respectively (p<0.05). The percentage of neurite-forming-cells (discriminating neurotoxicity from general cytotoxicity) decreased from 70% (control) to 55% (bortezomib), 46% (epothilone-B), and 51% (oxaliplatin). Amifostine was neuroprotective against oxaliplatin-induced neurotoxicity, increasing both neurite length and neurite-forming-cells. Quantitative-RT-PCR showed a 2.7-fold decrease in Ccnb2 expression in differentiated PC12 vs. undifferentiated cells. CONCLUSION: Oxaliplatin, bortezomib, and epothilone-B are neurotoxic in the PC12 model. Amifostine has a neuroprotective effect only against oxaliplatin-induced neurotoxicity, suggesting that these compounds have different mechanisms of neurotoxicity.
AIM: To characterize neurotoxicity induced by oxaliplatin, bortezomib, and epothilone-B as well as protection against their neurotoxicity using an in vitro model. MATERIALS AND METHODS:Neurotoxicity was evaluated using the neurite outgrowth method in PC12 rat pheochromo-cytoma cells differentiated towards a mature neuronal phenotype, while neuroprotection was explored by simultaneous exposure to 0.5 mM amifostine. The potential markers of neuronal differentiation, cyclin-B2 (Ccnb2) and baculoviral inhibitor of apoptosis repeat-containing 5 (Birc5), were evaluated by quantitative reverse transcription polymerase chain reaction (RT-PCR). RESULTS:Bortezomib, epothilone-B, and oxaliplatin reduced neurite length to 68%, 78% and 66%, respectively (p<0.05). The percentage of neurite-forming-cells (discriminating neurotoxicity from general cytotoxicity) decreased from 70% (control) to 55% (bortezomib), 46% (epothilone-B), and 51% (oxaliplatin). Amifostine was neuroprotective against oxaliplatin-induced neurotoxicity, increasing both neurite length and neurite-forming-cells. Quantitative-RT-PCR showed a 2.7-fold decrease in Ccnb2 expression in differentiated PC12 vs. undifferentiated cells. CONCLUSION:Oxaliplatin, bortezomib, and epothilone-B are neurotoxic in the PC12 model. Amifostine has a neuroprotective effect only against oxaliplatin-induced neurotoxicity, suggesting that these compounds have different mechanisms of neurotoxicity.
Authors: Petra Kranaster; Christiaan Karreman; Jeremias E G A Dold; Alice Krebs; Melina Funke; Anna-Katharina Holzer; Stefanie Klima; Johanna Nyffeler; Stefan Helfrich; Valentin Wittmann; Marcel Leist Journal: Arch Toxicol Date: 2019-12-11 Impact factor: 5.153
Authors: Eun-Sang Cho; Jin-Mu Yi; Jong-Shik Park; You Jin Lee; Chae Jun Lim; Ok-Sun Bang; No Soo Kim Journal: BMC Complement Altern Med Date: 2016-10-26 Impact factor: 3.659
Authors: Hamed Kharrati-Koopaee; Esmaeil Ebrahimie; Mohammad Dadpasand; Ali Niazi; Rugang Tian; Ali Esmailizadeh Journal: J Genet Eng Biotechnol Date: 2021-07-08