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MCP-1 is selectively expressed in the late phase by cytokine-stimulated human neutrophils: TNF-alpha plays a role in maximal MCP-1 mRNA expression

  1. Author:
    Yamashiro, S.
    Kamohara, H.
    Yoshimura, T.

  2. Author Address

    Yoshimura T NCI, Frederick Canc Res & Dev Ctr, Immunopathol Sect, Immunobiol Lab Bldg 560,Rm 12-71 Frederick, MD 21702 USA NCI, Frederick Canc Res & Dev Ctr, Immunopathol Sect, Immunobiol Lab Frederick, MD 21702 USA
    1. Year: 1999
  2. Journal: Journal of Leukocyte Biology
    1. 65
    2. 5
    3. Pages: 671-679
  4. Type of Article: Article
  1. Abstract:

    Culture supernatants of phytohemagglutinin (PHA)-stimulated human peripheral blood mononuclear cells (PHA-sup) induced monocyte chemoattractant protein-1 (MCP-1) mRNA expression in human neutrophjls. MCP-1 mRNA was first detected by Northern analysis at 8 h, and the peak level was detected at 16 h and sustained until 72 h. Cycloheximide and genistein, but not pertussis toxin, inhibited the expression of MCP-1 mRNA, Reecombinant tumor necrosis factor a (TNF-cx) induced a low level MCP-1 mRNA accumulation in neutrophils, and addition of anti-TNF-a IgG blocked 30-70% of MCP-1 mRNA expression induced with PHA-sup, PHA-sup-stimulated PMN synthesized and secreted 3.1 +/- 1.3 ng/5 x 10(6) PMN MCP-1 within the first 24 h, Hybridization of P-32-labeled cDNA preparations to an array of human cytokine cDNAs further indicated that MCP-1 mRNA was selectively up-regulated in the late phase after stimulation with the PHA-sup. [References: 54]

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