In vitro: 5-Iodotubercidin(Itu) is a genotoxic drug that activates the Atm-p53 pathway and has anti-tumor activity. Itu is unique compared to other nucleoside analogs in the way that it induces G2 arrest in a p53 -dependent manner. Moreover, at higher doses, Itu might activate p53-independent pathways, which may cooperate with p53 to kill cells and inhibit tumor growth. Incorporation of Itu metabolite into DNA causes DNA breaks, which triggers the DNA damage response. Itu might be a potential chemotherapeutic drug with distinct working mechanisms.
In vivo: 5-Iodotubercidin is a potent inhibitor of adenosine kinase in the rat brain. 5-iodotubercidin has potent hypotensive, muscle relaxant, and hypothermic actions in mice, and that these effects could be blocked by theophylline, an adenosine receptor antagonist. 5-iodotubercidin (1 mg/kg, i.p.) administered prior to an ischemic episode, fails to provide a degree of cerebroprotection, assessed either by locomotor or histopathological indices Even though 5-iodotubercidin administration is known to enhance extracellular adenosine levels in brain slices.
|Animal models||Male Mongolian gerbils|
|Dosages||1, 2.5 and 5 mg/kg|
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
|Solubility||78 mg/mL in DMSO|
Inhibitory effect of 5-iodotubercidin on pigmentation.
Kim KI, et al. Biochem Biophys Res Commun. 2017 Sep 2;490(4):1282-1286. PMID: 28684314.
Identification of 5-Iodotubercidin as a genotoxic drug with anti-cancer potential.
Zhang X, et al. PLoS One. 2013 May 7;8(5):e62527. PMID: 23667485.
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