当前位置： SCI文献检索 > EUROPEAN JOURNAL OF NUTRITION期刊下所有文献 > Impact of JNK1, JNK2, and ligase Itch on reactive oxygen species formation and survival of prostate cancer cells treated with diallyl trisulfide.

Impact of JNK1, JNK2, and ligase Itch on reactive oxygen species formation and survival of prostate cancer cells treated with diallyl trisulfide.

Abstract：

PURPOSE:In our previous study, we demonstrated that diallyl trisulfide (DATS) induced iron-dependent G2-M arrest of prostate cancer cell cycle. Moreover, ferritin degradation and an increase of labile iron pool has been linked to the activation of the JNK signaling axis. In the present work, we extended this study to determine which of the c-jun kinases is responsible for ferritin degradation and the role of iron in DATS-induced cell death. We hypothesized that JNK1 activates Itch ligase which will lead to ferritin ubiquitination, an increase in iron-dependent ROS formation and cell death. METHODS:PC-3 prostate cancer cells were used in this study. Cell viability, concentration of ROS, labile iron pool, and changes in ferritin and P-Itch and DNA damage were determined. RESULTS:We observed that DATS induced ferritin degradation through JNK, Itch signaling axis. DATS did not induce neither ROS formation nor increase the LIP in JNK1-DN transfected cells. We also observed that DATS increased JNK-dependent activating phosphorylation of E3ligase Itch. The cells transfected with inactive form of Itch were more resistant against cytotoxicity of DATS and showed lower DATS-induced ferritin degradation. Desferrioxamine a specific iron chelator had no effect neither on cell viability nor DNA damage evaluated by comet assay. CONCLUSIONS:These results suggest that JNK1-dependent increase in LIP is mediated by Itch ubiquitin ligase.

journal_name

Eur J Nutr

journal_title

European journal of nutrition

authors

Sielicka-Dudzin A,Borkowska A,Herman-Antosiewicz A,Wozniak M,Jozwik A,Fedeli D,Antosiewicz J

doi

10.1007/s00394-011-0241-0

subject

Has Abstract

pub_date

2012-08-01 00:00:00

pages

573-81

issue

5

eissn

1436-6207

issn

1436-6215

journal_volume

51

pub_type

杂志文章

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