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Träfflista för sökning "WFRF:(Liu DR) srt2:(2000-2004)"

Sökning: WFRF:(Liu DR) > (2000-2004)

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  • Li, LQ, et al. (författare)
  • Epstein-Barr virus inhibits the development of dendritic cells by promoting apoptosis of their monocyte precursors in the presence of granulocyte macrophage-colony-stimulating factor and interleukin-4
  • 2002
  • Ingår i: Blood. - : American Society of Hematology. - 0006-4971 .- 1528-0020. ; 99:10, s. 3725-3734
  • Tidskriftsartikel (refereegranskat)abstract
    • Epstein-Barr virus (EBV) is a tumorigenic human herpesvirus that persists for life in healthy immunocompetent carriers. The viral strategies that prevent its clearance and allow reactivation in the face of persistent immunity are not well understood. Here we demonstrate that EBV infection of monocytes inhibits their development into dendritic cells (DCs), leading to an abnormal cellular response to granulocyte macrophage–colony-stimulating factor (GM-CSF) and interleukin-4 (IL-4) and to apoptotic death. This proapoptotic activity was not affected by UV inactivation and was neutralized by EBV antibody-positive human sera, indicating that binding of the virus to monocytes is sufficient to alter their response to the cytokines. Experiments with the relevant blocking antibodies or with mutated EBV strains lacking either the EBV envelope glycoprotein gp42 or gp85 demonstrated that interaction of the trimolecular gp25–gp42–gp85 complex with the monocyte membrane is required for the effect. Our data provide the first evidence that EBV can prevent the development of DCs through a mechanism that appears to bypass the requirement for viral gene expression, and they suggest a new strategy for interference with the function of DCs during the initiation and maintenance of virus-specific immune responses.
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  • Mates, L, et al. (författare)
  • Comparative analysis of the mouse and human genes (Matn2 and MATN2) for matrilin-2, a filament-forming protein widely distributed in extracellular matrices
  • 2002
  • Ingår i: Matrix Biology. - 1569-1802. ; 21:2, s. 163-174
  • Tidskriftsartikel (refereegranskat)abstract
    • We previously identified matrilin-2 (MATN2), the largest member of the novel family of matrilins. These filament-forming adapter proteins expressed in a distinct, but partially overlapping, pattern in all tissues were implicated in the organization of the extracellular matrix. Matrilin-2 functions in a great variety of tissues. Here, we present the genomic organization of the highly conserved mouse and human MATN2 loci, which cover > 100 kb and 167.167 kb genomic regions, respectively, and are composed of 19 exons. RT-PCR analysis revealed that alternative transcripts with identical protein coding regions are transcribed from two promoters in both species. The upstream, housekeeping type promoter is functional in all tissues and cell types tested. The activity of the downstream, TATA-like promoter preceded with putative motifs for the homeobox transcription factor PRRX2 is restricted to embryonic fibroblasts and certain cell lines. The oligomerization module is split by an U12-type AT-AC intron found in conserved position in all four matrilin genes. We assigned Matn2 to mouse chromosome 15, linked to Trhr and Sntb1 in a region synthenic to human chromosome 8q22-24.
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