Description
HMN-214 is an orally bioavailable prodrug form of HMN-176, an indirect inhibitor of polo-like kinase (PLK) activity that inhibits proliferation of a variety of cancer cells.
1,2 HMN-214 decreases the expression of multidrug resistance gene 1 (MDR1) in AB-A.1 cells and in tumors isolated from mice bearing multidrug-resistant KB-A1 xenografts.
2 HMN-214 (20 mg/kg per day) reduces tumor volume in PC3, WiDr, and A549 mouse xenograft models.
1 It does not decrease nerve conduction velocity or compound action potential amplitude in rabbit sciatic nerves
in vivo when administered at a concentration of 30 mg/kg per day.
Uses
HMN 214 is a novel oral stilbene derivative with polo-like kinase-1-interacting properties, in patients with advanced solid tumors. It is a prodrug of HMN 176, a stilbene derivative that interferes with the subcellular spatial location of polo-like kinase-1 (PLK1).
Definition
ChEBI: N-(4-methoxyphenyl)sulfonyl-N-[2-[2-(1-oxido-4-pyridin-1-iumyl)ethenyl]phenyl]acetamide is a sulfonamide.
in vitro
hmn-176 showed potent cytotoxicity, with a mean ic50 of 118 nm. the cytotoxic effecacy of hnm-176 was superior to that of adm, vp-16 and cddp, but inferior to that of taxol and vcr. hmn-176 showed less vaiance in log(ic50) than did the reference agents. in addition, judging by its low resistance indices, hmn-176 was more cytotoxic toward the drug-resistant phenotypes of tumor cells than were the other agents tested [1].
in vivo
pk studies showed that hnm-214 was an acceptable oral prodrug of hmn-176. in the in vivo analysis of the schedule-dependency of hmn-214, the repeated administration for over 5 days elicited potent antitumor activity, as expected from the exposure-dependency of the cytotoxicity of hmn-176 and from the cytometric studies. the antitumor activity of hmn-214 against human tumor xenografts was equal or superior to that of clinically avaiable agents, including cis-platinum, adriamycin, vincristine and uft without severe toxicity such as neurotoxicity [1].
IC 50
hmn-176 showed potent cytotoxic activity against several tumor cell lines with an average ic50 of 118 nmol/l
References
[1] takagi m, honmura t, watanabe s, yamaguchi r, nogawa m, nishimura i, katoh f, matsuda m, hidaka h. in vivo antitumor activity of a novel sulfonamide, hmn-214, against human tumor xenografts in mice and the spectrum of cytotoxicity of its active metabolite, hmn-176. invest new drugs. 2003 nov;21(4):387-99.
[2] garland ll, taylor c, pilkington dl, cohen jl, von hoff dd. a phase i pharmacokinetic study of hmn-214, a novel oral stilbene derivative with polo-like kinase-1-interacting properties, in patients with advanced solid tumors. clin cancer res. 2006 sep 1;12(17):5182-9.
