Biology of the cell cycle inhibitor p21CDKN1A: molecular mechanisms and relevance in chemical toxicology
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  • 作者:Ilaria Dutto (1)
    Micol Tillhon (1)
    Ornella Cazzalini (2)
    Lucia A. Stivala (2)
    Ennio Prosperi (1)

    1. Genome Stability Group
    ; Institute of Molecular Genetics ; National Research Council (CNR) ; Via Abbiategrasso 207 ; 27100 ; Pavia ; Italy
    2. General Pathology and Immunology Unit
    ; Department of Molecular Medicine ; University of Pavia ; Via Ferrata 9 ; 27100 ; Pavia ; Italy
  • 关键词:p21CDKN1A/WAF1/CIP1 ; Cell cycle inhibition ; DNA damage response ; DNA repair ; Genotoxic compounds ; Chemical toxicity
  • 刊名:Archives of Toxicology
  • 出版年:2015
  • 出版时间:February 2015
  • 年:2015
  • 卷:89
  • 期:2
  • 页码:155-178
  • 全文大小:815 KB
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  • 刊物主题:Pharmacology/Toxicology; Occupational Medicine/Industrial Medicine; Environmental Health; Biomedicine general;
  • 出版者:Springer Berlin Heidelberg
  • ISSN:1432-0738
文摘
The cell cycle inhibitor p21CDKN1A is a protein playing multiple roles not only in the DNA damage response, but also in many cellular processes during unperturbed cell growth. The main, well-known function of p21 is to arrest cell cycle progression by inhibiting the activity of cyclin-dependent kinases. In addition, p21 is involved in the regulation of transcription, apoptosis, DNA repair, as well as cell motility. However, p21 appears to a have a dual-face behavior because, in addition to its tumor suppressor functions, it may act as an oncogene, depending on the cell type and on the cellular localization. As a biomarker of the cell response to different toxic stimuli, p21 expression and functions have been analyzed in an impressive number of studies investigating the activity of several types of chemicals, in order to determine their possible harmful effects on human cells. Here, we review these studies in order to highlight the different roles p21 may play in the cell response to chemical exposure and to better evaluate the information provided by this biomarker.

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