Abstract:
:Nasopharyngeal carcinoma (NPC) is a common neoplasm in Southeastern Asia, and cisplatin-containing regimens for combinational chemotherapy are widely used for treating locally recurrent or metastatic diseases. However, resistance to cisplatin is not infrequently seen and its associated side effects may be life-threatening. In this report, another metallo-pharmaceutical agent gold(III) porphyrin complex [Au(TPP)]Cl was investigated in comparison to cisplatin for its in vitro and in vivo anticancer effects. Through induction of the intrinsic apoptosis pathway, [Au(TPP)]Cl exhibited 100-fold higher potency than cisplatin in killing NPC cells, including cisplatin-sensitive and cisplatin-resistant variants, and also an variant harboring the Epstein-Barr virus. In addition, a safety concentration window was demonstrated, allowing [Au(TPP)]Cl to kill tumors with minimal cytotoxicity to noncancerous cells. More importantly, weekly intraperitoneal injection of 3 mg/kg [Au(TPP)]Cl was more effective than the same dose of cisplatin in inducing tumor apoptosis in vivo and remarkably inhibited tumor growth in animals without any noticeable side effect. [Au(TPP)]Cl therefore is a promising chemotherapeutic agent that deserves further development as a novel drug for the treatment of advanced NPC, in particular, for cases with cisplatin-resistance.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
To YF,Sun RW,Chen Y,Chan VS,Yu WY,Tam PK,Che CM,Lin CLdoi
10.1002/ijc.24130subject
Has Abstractpub_date
2009-04-15 00:00:00pages
1971-9issue
8eissn
0020-7136issn
1097-0215journal_volume
124pub_type
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