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GSTA4 mediates reduction of cisplatin ototoxicity in female mice

  • Hyo Jin Park
  • , Mi Jung Kim
  • , Christina Rothenberger
  • , Ashok Kumar
  • , Edith M. Sampson
  • , Dalian Ding
  • , Chul Han
  • , Karessa White
  • , Kevin Boyd
  • , Senthilvelan Manohar
  • , Yong Hwan Kim
  • , Maria S. Ticsa
  • , Aaron S. Gomez
  • , Isabela Caicedo
  • , Upal Bose
  • , Paul J. Linser
  • , Takuya Miyakawa
  • , Masaru Tanokura
  • , Thomas C. Foster
  • , Richard Salvi
  • Shinichi Someya
  • University of Florida
  • St. Joseph's Hospital and Medical Center, Phoenix
  • The University of Tokyo

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Cisplatin is one of the most widely used chemotherapeutic drugs for the treatment of cancer. Unfortunately, one of its major side effects is permanent hearing loss. Here, we show that glutathione transferase α4 (GSTA4), a member of the Phase II detoxifying enzyme superfamily, mediates reduction of cisplatin ototoxicity by removing 4-hydroxynonenal (4-HNE) in the inner ears of female mice. Under cisplatin treatment, loss of Gsta4 results in more profound hearing loss in female mice compared to male mice. Cisplatin stimulates GSTA4 activity in the inner ear of female wild-type, but not male wild-type mice. In female Gsta4−/− mice, cisplatin treatment results in increased levels of 4-HNE in cochlear neurons compared to male Gsta4−/− mice. In CBA/CaJ mice, ovariectomy decreases mRNA expression of Gsta4, and the levels of GSTA4 protein in the inner ears. Thus, our findings suggest that GSTA4-dependent detoxification may play a role in estrogen-mediated neuroprotection.

Original languageEnglish
Article number4150
JournalNature Communications
Volume10
Issue number1
DOIs
StatePublished - Dec 1 2019

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