Stress response regulation of mRNA translation: Implications for antioxidant enzyme expression in cancer

• 成果类型: Article
• 署名作者: Kim, Yeon Soo; Kimball, Scot R.; Piskounova, Elena; Begley, Thomas J.; Hempel, Nadine
• 署名单位: Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Penn State Health; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Penn State Health; Cornell University; Weill Cornell Medicine; State University of New York (SUNY) System; University at Albany, SUNY; State University of New York (SUNY) System; University at Albany, SUNY; Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-12993
• DOI: 10.1073/pnas.2317846121
• 发表日期: 2024-11-12
• 关键词: internal-ribosome-entry; activating transcription factor-4; ires-mediated translation; oxidative stress; gene-expression; cell-survival; redox homeostasis; mtor function; up-regulation; tumor-cells

摘要

From tumorigenesis to advanced metastatic stages, tumor cells encounter stress, ranging from limited nutrient and oxygen supply within the tumor microenvironment to extrinsic and intrinsic oxidative stress. Thus, tumor cells seize regulatory pathways to rapidly adapt to distinct physiologic conditions to promote cellular survival, including manipulation of mRNA translation. While it is now well established that metastatic tumor cells must up- regulate their antioxidant capacity to effectively spread and that regulation of antioxidant enzymes is imperative to disease progression, relatively few studies have assessed how translation and the hijacking of RNA systems contribute to antioxidant responses of tumors. Here, we review the major stress signaling pathways involved in translational regulation and discuss how these are affected by oxidative stress to promote prosurvival changes that manipulate antioxidant enzyme expression. We describe how tumors elicit these adaptive responses and detail how stressinduced translation can be regulated by kinases, RNAbinding proteins, RNA species, and RNA modification systems. We also highlight opportunities for further studies focused on the role of mRNA translation and RNA systems in the regulation of antioxidant enzyme expression, which may be of particular importance in the context of metastatic progression and therapeutic resistance.