Identification of the molecular basis of doxorubicin-induced cardiotoxicity

Sui Zhang, Xiaobing Liu, Tasneem Bawa-Khalfe, Long Sheng Lu, Yi Lisa Lyu, Leroy-Fong Liu, Edward T H Yeh

Research output: Contribution to journalArticle

793 Citations (Scopus)


Doxorubicin is believed to cause dose-dependent cardiotoxicity through redox cycling and the generation of reactive oxygen species (ROS). Here we show that cardiomyocyte-specific deletion of Top2b (encoding topoisomerase-IIβ) protects cardiomyocytes from doxorubicin-induced DNA double-strand breaks and transcriptome changes that are responsible for defective mitochondrial biogenesis and ROS formation. Furthermore, cardiomyocyte-specific deletion of Top2b protects mice from the development of doxorubicin-induced progressive heart failure, suggesting that doxorubicin-induced cardiotoxicity is mediated by topoisomerase-IIβ in cardiomyocytes.

Original languageEnglish
Pages (from-to)1639-1642
Number of pages4
JournalNature Medicine
Issue number11
Publication statusPublished - Nov 2012
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

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  • Cite this

    Zhang, S., Liu, X., Bawa-Khalfe, T., Lu, L. S., Lyu, Y. L., Liu, L-F., & Yeh, E. T. H. (2012). Identification of the molecular basis of doxorubicin-induced cardiotoxicity. Nature Medicine, 18(11), 1639-1642.