Research Papers:

Comprehensive analysis of telomerase inhibition by gallotannin

Nikita Savelyev, Polina Baykuzina, Svetlana Dokudovskaya, Olga Lavrik, Maria Rubtsova _ and Olga Dontsova

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Oncotarget. 2018; 9:18712-18719. https://doi.org/10.18632/oncotarget.24642

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Nikita Savelyev1, Polina Baykuzina2, Svetlana Dokudovskaya3, Olga Lavrik4,5, Maria Rubtsova1,6 and Olga Dontsova1,6

1Lomonosov Moscow State University, Department of Chemistry, and A.N. Belozersky Institute of Physico-Chemical Biology, Moscow, 119992, Russia

2Lomonosov Moscow State University, Faculty of Bioengineering and Bioinformatics, Moscow, 119992, Russia

3UMR 8126, CNRS, University Paris-Sud, Université Paris Saclay, Institut de Cancérologie Gustave-Roussy, 94805, Villejuif, France

4Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

5Novosibirsk State University, Novosibirsk, 630090, Russia

6Skolkovo Institute of Science and Technology, Skolkovo, Moscow region, 143025, Russia

Correspondence to:

Maria Rubtsova, email: [email protected]

Keywords: telomerase; telomere; gallotannin; inhibition; poly(ADP-ribosy)lation

Received: August 18, 2017    Accepted: February 24, 2018    Published: April 10, 2018


Gallotannin (or tannic acid) is a naturally occurring compound that inhibits cell growth and activity of different DNA-polymerases, including telomerase. The purpose of the present study was to gain insight into the mechanism of telomerase inhibition by gallotannin. We determined that gallotannin inhibits telomerase in vitro with an half maximal inhibitory concentrations value of 130 nM, but it does not affect telomerase complex assembly and component levels in vivo. The inhibitory activity of gallotannin against telomerase provides an additional explanation for the anti-cancer activities of this compound.

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