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Träfflista för sökning "WFRF:(Reichard S.) srt2:(2005-2009)"

Sökning: WFRF:(Reichard S.) > (2005-2009)

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  • Marafioti, Teresa, et al. (författare)
  • Novel markers of normal and neoplastic human plasmacytoid dendritic cells
  • 2008
  • Ingår i: Blood. - : American Society of Hematology. - 1528-0020 .- 0006-4971. ; 111:7, s. 3778-3792
  • Forskningsöversikt (refereegranskat)abstract
    • Plasmacytoid dendritic cells (pDCs) are involved in innate immunity (eg, by secreting interferons) and also give rise to CD4(+)CD56(+) hematodermic neoplasms. We report extensive characterization of human pDCs in routine tissue samples, documenting the expression of 19 immunohistologic markers, including signaling molecules (eg, BLNK), transcription factors (eg, ICSBP/IRF8 and PU.1), and Toll-like receptors (TLR7, TLR9). Many of these molecules are expressed in other cell types (principally B cells), but the adaptor protein CD2AP was essentially restricted to pDCs, and is therefore a novel immunohistologic marker for use in tissue biopsies. We found little evidence for activation-associated morphologic or phenotypic changes in conditions where pDCs are greatly increased (eg, Kikuchi disease). Most of the molecules were retained in the majority of pDC neoplasms, and 3 (BCL11A, CD2AP, and ICSBP/IRF8) were also commonly negative in leukemia cutis (acute myeloid leukemia in the skin), a tumor that may mimic pDC neoplasia. In summary, we have documented a range of molecules (notably those associated with B cells) expressed by pDCs in tissues and peripheral blood (where pDCs were detectable in cytospins at a frequency of < 1% of mononuclear cells) and also defined potential new markers (in particular CD2AP) for the diagnosis of pDC tumors.
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