Abstract：
:Antidepressants are generally used for treatment of various mood and anxiety disorders. Several studies have shown the anti-tumor and cytotoxic activities of some antidepressants, but the underlying mechanisms were unclear. Maprotiline is a tetracyclic antidepressant and possesses a highly selective norepinephrine reuptake ability. We found that maprotiline decreased cell viability in a concentration- and time-dependent manner in Neuro-2a cells. Maprotiline induced apoptosis and increased caspase-3 activation. The activation of caspase-3 by maprotiline appears to depend on the activation of JNK and the inactivation of ERK. Maprotiline also induced [Ca(2+)](i) increases which involved the mobilization of intracellular Ca(2+) stored in the endoplasmic reticulum. Pretreatment with BAPTA/AM, a Ca(2+) chelator, suppressed maprotiline-induced ERK phosphorylation, enhanced caspase-3 activation and increased maprotiline-induced apoptosis. In conclusion, maprotiline induced apoptosis in Neuro-2a cells through activation of JNK-associated caspase-3 pathways. Maprotiline also evoked an anti-apoptotic response that was both Ca(2+)- and ERK-dependent.
journal_name
Toxicologyjournal_title
Toxicologyauthors
Jan CR,Su JA,Teng CC,Sheu ML,Lin PY,Chi MC,Chang CH,Liao WC,Kuo CC,Chou CTdoi
10.1016/j.tox.2012.11.013subject
Has Abstractpub_date
2013-02-08 00:00:00pages
1-12eissn
0300-483Xissn
1879-3185pii
S0300-483X(12)00410-6journal_volume
304pub_type
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