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The interferon-inducible p200 family of proteins: a perspective on their roles in cell cycle regulation and differentiation

  1. Author:
    Asefa, B.
    Klarmann, K. D.
    Copeland, N. G.
    Gilbert, D. J.
    Jenkins, N. A.
    Keller, J. R.

  2. Author Address

    Asefa, B, NCI, Mol Immunoregulat Lab, Bldg 560,Room 12-3, Frederick, MD 21702 USA NCI, Mol Immunoregulat Lab, Frederick, MD 21702 USA. NCI, Canc Res Ctr, Mouse Canc Genet Program, Frederick, MD 21702 USA. NCI, SAIC Frederick Inc, Basic Res Program, Frederick, MD 21702 USA.
    1. Year: 2004
    2. Date: JAN-FEB
  2. Journal: Blood Cells Molecules and Diseases
    1. 32
    2. 1
    3. Pages: 155-167
  4. Type of Article: Article
  1. Abstract:

    The interferon-inducible p200 (IFI-200) family of proteins is among the numerous gene products induced by interferons (IFNs), which are important regulators of cell growth, immunomodulation and host resistance to tumors and viral infections. The members of this family of proteins are highly homologous to one another and consist of five murine proteins including p202, p203, p204 and p205 as well as three human homologues; IFI-16, myeloid cell nuclear differentiation antigen (MNDA) and absent in melanoma (AIM) 2. They possess at least one copy of a conserved 200 amino-acid motif which exists in two types; the a and b domains. Most of the IFI-200 proteins also possess a domain in apoptosis and interferon response (DAPIN)/PYRIN domain, which is a conserved motif associated with protein-protein interactions in the regulation of apoptotic and inflammatory signaling pathways. The p200 proteins have been implicated in cell cycle regulation and differentiation based on their ability to interact with and modulate the activities of multiple transcriptional factors such as Rb and p53, and there are significant findings that link mutations in their genetic loci to the incidence of cancer. Here, we describe the structure and biological activities of these proteins, and discuss recent studies that describe their relevant roles in processes regulating cell proliferation and differentiation. Published by Elsevier Inc

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