ABCB1 protects bat cells from DNA damage induced by genotoxic compounds

Javier Koh, Yoko Itahana, Ian H. Mendenhall, Dolyce Low, Eunice Xin Yi Soh, Alvin Kunyao Guo, Yok Teng Chionh, Lin-Fa Wang () and Koji Itahana ()
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Javier Koh: Programme in Cancer & Stem Cell Biology, Duke-NUS Medical School
Yoko Itahana: Programme in Cancer & Stem Cell Biology, Duke-NUS Medical School
Ian H. Mendenhall: Programme in Emerging Infectious Diseases, Duke-NUS Medical School
Dolyce Low: Programme in Emerging Infectious Diseases, Duke-NUS Medical School
Eunice Xin Yi Soh: School of Applied Science, Temasek Polytechnic
Alvin Kunyao Guo: Programme in Cancer & Stem Cell Biology, Duke-NUS Medical School
Yok Teng Chionh: Programme in Emerging Infectious Diseases, Duke-NUS Medical School
Lin-Fa Wang: Programme in Emerging Infectious Diseases, Duke-NUS Medical School
Koji Itahana: Programme in Cancer & Stem Cell Biology, Duke-NUS Medical School

Nature Communications, 2019, vol. 10, issue 1, 1-14

Abstract: Abstract Bats are unusual mammals, with the ability to fly, and long lifespans. In addition, bats have a low incidence of cancer, but the mechanisms underlying this phenomenon remain elusive. Here we discovered that bat cells are more resistant than human and mouse cells to DNA damage induced by genotoxic drugs. We found that bat cells accumulate less chemical than human and mouse cells, and efficient drug efflux mediated by the ABC transporter ABCB1 underlies this improved response to genotoxic reagents. Inhibition of ABCB1 triggers an accumulation of doxorubicin, DNA damage, and cell death. ABCB1 is expressed at higher levels in several cell lines and tissues derived from bats compared to humans. Furthermore, increased drug efflux and high expression of ABCB1 are conserved across multiple bat species. Our findings suggest that enhanced efflux protects bat cells from DNA damage induced by genotoxic compounds, which may contribute to their low cancer incidence.

Date: 2019
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DOI: 10.1038/s41467-019-10495-4

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