Histone acetylase inhibitor curcumin impairs mouse spermiogenesis-an in vitro study

PLoS One. 2012;7(11):e48673. doi: 10.1371/journal.pone.0048673. Epub 2012 Nov 7.

Abstract

In the previous study, we unraveled the unique "erasure strategy" during the mouse spermiogenesis. Chromatin associated proteins sequentially disassociated from the spermatid chromosome, which led to the termination of transcription in elongating spermatids. By this process, a relatively naïve paternal chromatin was generated, which might be essential for the zygotic development. We supposed the regulation of histone acetylation played an important role throughout this "erasure" process. In order to verify this hypothesis, we treated mouse spermatids in vitro by histone acetylase (HAT) inhibitor Curcumin. Our results showed an inhibiting effect of Curcumin on the growth of germ cell line in a dose-dependent manner. Accordingly, the apoptosis of primary haploid spermtids was increased by Curcumin treatment. As expected, the acetylated histone level was downregulated. Furthermore, we found the transcription in spermatids ceased in advance, the dynamics of chromatin associated factors was disturbed by Curcumin treatment. The regulation of histone acetylation should be one of the core reprogramming mechanisms during the spermiogenesis. The reproductive toxicity of Curcumin needs to be thoroughly investigated, which is crucial for its further clinical application.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acetylation / drug effects
  • Animals
  • Apoptosis / drug effects
  • Cell Line
  • Curcumin / pharmacology*
  • Down-Regulation / drug effects
  • Histone Acetyltransferases / antagonists & inhibitors*
  • Histones / metabolism
  • Male
  • Mice
  • RNA, Messenger / metabolism
  • Spermatids / drug effects
  • Spermatids / metabolism
  • Spermatids / pathology
  • Spermatogenesis / drug effects*

Substances

  • Histones
  • RNA, Messenger
  • Histone Acetyltransferases
  • Curcumin

Grants and funding

This work was supported by grants from the Ministry of Education of P.R. China (20110073120083), http://www.moe.edu.cn/; Science and Technology Commission of Shanghai Municipality (10DZ2270600),http://www.stcsm.gov.cn/; Shanghai Leading Academic Discipline Project (S30201) and Shanghai Municipal Education Commission (JDY10141), http://www.shmec.gov.cn/. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.