3-Deazaneplanocin is a highly potent inhibitor of S-adenosylhomocysteine hydrolase with Ki value of 0.05 nM [1].
3-Deazaneplanocin was synthesized as an inhibitor of S-adenosylhomocysteine hydrolase. It is an analog of adenosine and inhibits S-adenosylhomocysteine hydrolase through competing with the substrate, adenosine. 3-Deazaneplanocin was not so that potent in cell growth inhibition. 10 μM 3-Deazaneplanocin treatment resulted in moderate cell growth reduction in HL-60 cells. In HCC cell lines Huh1 and Huh7, 3-Deazaneplanocin inhibited growth and non-adherent sphere formation dose-dependently. It decreased the epithelial cell adhesion molecule EpCAMhigh fraction from 49.0% to 12.5% in Huh1 cells and from 44.4% to 11.6% in Huh7 cells. Moreover, in mice implanted with Huh7 cells, administration of 3-Deazaneplanocin suppressed tumor initiation and growth via directly affecting the growth and self-renewal of tumor-initiating cells [1, 2].
References:
[1] Glazer R I, Hartman K D, Knode M C, et al. 3-Deazaneplanocin: a new and potent inhibitor of S-adenosylhomocysteine hydrolase and its effects on human promyelocytic leukemia cell line HL-60. Biochemical and biophysical research communications, 1986, 135(2): 688-694.
[2] Chiba T, Suzuki E, Negishi M, et al. 3-Deazaneplanocin A is a promising therapeutic agent for the eradication of tumor-initiating hepatocellular carcinoma cells. International Journal of Cancer, 2012, 130(11): 2557-2567.