Volume 136, Issue 17 e202317187
Zuschrift

Tapcin, an In Vivo Active Dual Topoisomerase I/II Inhibitor Discovered by Synthetic Bioinformatic Natural Product (Syn-BNP)-Coupled Metagenomics

Dr. Zongqiang Wang

Dr. Zongqiang Wang

Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA

These authors contributed equally to this work.

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Dr. Amanda Kasper

Dr. Amanda Kasper

Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA

These authors contributed equally to this work.

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Dr. Mai Takahashi

Dr. Mai Takahashi

Laboratory of Systems Cancer Biology, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA

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Dr. Adrian Morales Amador

Dr. Adrian Morales Amador

Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA

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Dr. Abir Bhattacharjee

Dr. Abir Bhattacharjee

Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA

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Dr. Jingbo Kan

Dr. Jingbo Kan

Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA

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Dr. Yozen Hernandez

Dr. Yozen Hernandez

Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA

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Melinda Ternei

Melinda Ternei

Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA

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Prof. Sean F. Brady

Corresponding Author

Prof. Sean F. Brady

Laboratory of Genetically Encoded Small Molecules, The Rockefeller University, 1230 York Avenue, New York, NY 10065 USA

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First published: 17 January 2024

Abstract

DNA topoisomerases are attractive targets for anticancer agents. Dual topoisomerase I/II inhibitors are particularly appealing due to their reduced rates of resistance. A number of therapeutically relevant topoisomerase inhibitors are bacterial natural products. Mining the untapped chemical diversity encoded by soil microbiomes presents an opportunity to identify additional natural topoisomerase inhibitors. Here we couple metagenome mining, bioinformatic structure prediction algorithms, and chemical synthesis to produce the dual topoisomerase inhibitor tapcin. Tapcin is a mixed p-aminobenzoic acid (PABA)-thiazole with a rare tri-thiazole substructure and picomolar antiproliferative activity. Tapcin reduced colorectal adenocarcinoma HT-29 cell proliferation and tumor volume in mouse hollow fiber and xenograft models, respectively. In both studies it showed similar activity to the clinically used topoisomerase I inhibitor irinotecan. The study suggests that the interrogation of soil microbiomes using synthetic bioinformatic natural product methods has the potential to be a rewarding strategy for identifying potent, biomedically relevant, antiproliferative agents.

Data Availability Statement

The data that support the findings of this study are openly available in ncbi at https://www.ncbi.nlm.nih.gov, reference number 950198.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.