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Additional Information

Competing Interests

The authors declare that they have no competing interest.

Author Contributions

Lukasz Kaczmarek conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.

Katarzyna Badowska-Rosłonek performed the experiments, contributed reagents/materials/analysis tools.

Anna Jaromin conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools.

Wojciech Łuniewski performed the experiments, analyzed the data, contributed reagents/materials/analysis tools.

Wanda Peczyńska-Czoch conceived and designed the experiments, analyzed the data.

Katarzyna Sidoryk conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools.

Wojciech Szczepek conceived and designed the experiments, analyzed the data.

Joanna Wietrzyk conceived and designed the experiments, performed the experiments, analyzed the data.

Bogdan Zagrodzki performed the experiments, contributed reagents/materials/analysis tools.

Data Deposition

The following information was supplied regarding data availability:

The research in this article did not generate any raw data.

Funding

Parts of the presented material was granted by 1) Servier: (1997-2001) ” Indoloquinolines-new class of Topoisomerase II inhibitors with antitumor activity" and 2) Polpharma Scientific Foundation(2002-2003) " Synthesis and biological screening of sugar and aminosugar derivatives of indolo[2,3-b]quinoline”. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.


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