在前列腺癌细胞中,nrf1 和 nrf2 的平衡在氧化应激调节和雄激素信号中起作用。

The nrf1 and nrf2 balance in oxidative stress regulation and androgen signaling in prostate cancer cells.

机构信息

Department of Pharmacology, Tulane University Medical Center, 1430 Tulane Avenue, New Orleans, LA 70112, USA.

出版信息

Cancers (Basel). 2010 Jun 21;2(2):1354-78. doi: 10.3390/cancers2021354.

Abstract

Reactive oxygen species (ROS) signaling has recently sparked a surge of interest as being the molecular underpinning for cancer cell survival, but the precise mechanisms involved have not been completely elucidated. This review covers the possible roles of two ROS-induced transcription factors, Nrf1 and Nrf2, and the antioxidant proteins peroxiredoxin-1 (Prx-1) and Thioredoxin-1 (Txn-1) in modulating AR expression and signaling in aggressive prostate cancer (PCa) cells. In androgen independent (AI) C4-2B cells, in comparison to the parental androgen dependent (AD) LNCaP cells, we present evidence of high Nrf1 and Prx-1 expression and low Nrf2 expression in these aggressive PCa cells. Furthermore, in DHT treated C4-2B cells, increased expression of the p65 (active) isoform of Nrf1 correlated with enhanced AR transactivation. Our findings implicate a crucial balance of Nrf1 and Nrf2 signaling in regulating AR activity in AI-PCa cells. Here we will discuss how understanding the mechanisms by which oxidative stress may affect AR signaling may aid in developing novel therapies for AI-PCa.

摘要

活性氧(ROS)信号转导最近引起了人们的极大兴趣,被认为是癌细胞存活的分子基础,但涉及的确切机制尚未完全阐明。这篇综述涵盖了两种 ROS 诱导的转录因子 Nrf1 和 Nrf2,以及抗氧化蛋白过氧化物酶 1(Prx-1)和硫氧还蛋白 1(Txn-1)在调节雄激素受体(AR)表达和信号转导方面的可能作用在侵袭性前列腺癌(PCa)细胞中。与亲本雄激素依赖性(AD)LNCaP 细胞相比,在雄激素非依赖性(AI)C4-2B 细胞中,我们提出了在这些侵袭性 PCa 细胞中 Nrf1 和 Prx-1 表达高而 Nrf2 表达低的证据。此外,在 DHT 处理的 C4-2B 细胞中,Nrf1 的 p65(活性)同工型表达增加与 AR 转录激活增强相关。我们的研究结果表明,Nrf1 和 Nrf2 信号转导的关键平衡在调节 AI-PCa 细胞中的 AR 活性中起关键作用。在这里,我们将讨论了解氧化应激如何影响 AR 信号转导的机制如何有助于开发 AI-PCa 的新型治疗方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e17b/3835133/b61712af9ee2/cancers-02-01354-g001.jpg

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