Synthesis and evaluation of nitric oxide-releasing derivatives of farnesylthiosalicylic acid as anti-tumor agents.
Novel furoxan-based nitric oxide (NO)-releasing derivatives (11a-p) of farnesylthiosalicylic acid (FTA) were synthesized. Compounds 11d, 11f, 11k, and 11m-o displayed anti-tumor activities superior to FTA and sorafenib in most cancer cells tested. Analysis of six compounds revealed that 11d, 11f, 11n, 11o, and 11p, but not 11a that had low anti-tumor activity, produced high levels of NO, associated with their strong anti-tumor activity. Furthermore, the anti-tumor activity of 11f was partially mimicked by the furoxan moiety, but reduced by pre-treatment with hemoglobin. Importantly, treatment with 11f inhibited Ras-related signaling in cancer cells. Apparently, the high anti-tumor activity of 11f was attributed to the synergic effect of high levels of NO production and inhibition of Ras-related signaling in cancer cells. Our findings suggest that the furoxan/FTA hybrids may hold greater promise as therapeutic agents for the intervention of human cancers.
Ling
Yong
Y
Center of Drug Discovery, China Pharmaceutical University, Nanjing 210009, PR China.
Ye
Xiaolei
X
Ji
Hui
H
Zhang
Yihua
Y
Lai
Yisheng
Y
Peng
Sixun
S
Tian
Jide
J
D000970:Antineoplastic Agents / Q000378:metabolism / Q000494:pharmacology*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D015195:Drug Design; D005204:Farnesol / Q000031:analogs & derivatives* / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology; D011905:Genes, ras / Q000187:drug effects; D006801:Humans; D009569:Nitric Oxide / Q000494:pharmacology*; D010069:Oxadiazoles / Q000378:metabolism / Q000494:pharmacology*; D012459:Salicylates / Q000737:chemistry / Q000378:metabolism / Q000494:pharmacology*; D015398:Signal Transduction / Q000187:drug effects*; D013329:Structure-Activity Relationship
C528141:1,2,5-oxadiazole 2-oxide; D000970:Antineoplastic Agents; D010069:Oxadiazoles; D012459:Salicylates; C093323:farnesylthiosalicylic acid; D009569:Nitric Oxide; D005204:Farnesol