Abstract:
:Aplastic anaemia (AA) is considered as an immune-mediated bone marrow failure syndrome. The mechanism is involved with a variety of immune molecules including interferon-γ (IFN-γ), tumour necrosis factor-α (TNF-α) and interleukins (ILs). IL-27 is a novel member of the IL-12 family, which mediates T cell response and enhances the production of IFN-γ. However, little is known about the role of IL-27 in the development of AA. This study investigated the role of IL-27 and its receptor IL-27R in the pathogenesis of AA. Both the mRNA expression of IL-27/IL-27R subunits in the bone marrow mononuclear cells (BMMNCs) and the levels of IL-27 in the marrow plasma in AA were found to be higher than in controls. Increased IL-27 correlated with the disease severity of AA. Subsequently, we stimulated marrow T lymphocytes with recombinant human (rh)IL-27 and found that rhIL-27 enhanced the production of TNF-α and IFN-γ in both CD4(+) and CD8(+) T lymphocytes from AA patients. We also detected increased TNF-α and IFN-γ in the supernatants of BMMNCs from AA patients after IL-27 stimulation. In conclusion, our data suggest that elevated IL-27 and IL-27-induced TNF-α and IFN-γ overproduction might be involved in the pathogenesis of AA.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Li J,Zhao Q,Xing W,Feng J,Wu H,Li H,Ge M,Tian K,Li X,Zhou J,Liu B,Zhang L,Zheng Y,Han ZCdoi
10.1111/j.1365-2141.2010.08431.xsubject
Has Abstractpub_date
2011-06-01 00:00:00pages
764-72issue
6eissn
0007-1048issn
1365-2141journal_volume
153pub_type
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