FEBS Letters 1983-05-08

Inhibition of microtubule assembly in vitro by TN-16, a synthetic antitumor drug.

T Arai

Index: FEBS Lett. 155(2) , 273-6, (1983)

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Abstract

An antitumor drug, 3-(1-anilinoethylidene)-5-benzylpyrrolidine-2,4-dione (TN-16) inhibited the assembly of porcine brain microtubules in vitro. The assembly induced by taxol was also suppressed by the drug. However, the latter required much higher concentration of TN-16 than the former. Binding studies by means of the fluorometric method and the spun-column procedure indicate that the inhibition was caused by the reversible binding of the drug to the colchicine-sensitive site of tubulin. The affinity of TN-16 to tubulin was almost equal to that of nocodazole.

Related Compounds

  • TN-16

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