Expression profiles of human interferon-alpha and interferon-lambda subtypes are ligand- and cell-dependent.

Expression profiles of human interferon-alpha and interferon-lambda subtypes are ligand- and cell-dependent.
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DOI:
10.1038/icb.2011.109
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发表时间:
2012-09
影响因子:
4
通讯作者:
Rabin, Ronald L.
Rabin, Ronald L.
中科院分区:
医学3区
文献类型:
--
作者:
Hillyer, Philippa;Mane, Viraj P.;Schramm, Lynnsie M.;Puig, Montserrat;Verthelyi, Daniela;Chen, Aaron;Zhao, Zeng;Navarro, Maria B.;Kirschman, Kevin D.;Bykadi, Srikant;Jubin, Ronald G.;Rabin, Ronald L.

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Recent genome-wide association studies suggest distinct roles for 12 human interferon-alpha (IFN-α) and 3 IFN-λ subtypes that may be elucidated by defining the expression patterns of these sets of genes. To overcome the impediment of high homology among each of the sets, we designed a quantitative real-time PCR assay that incorporates the use of molecular beacon and locked nucleic acid (LNA) probes, and in some instances, LNA oligonucleotide inhibitors. We then measured IFN subtype expression by human peripheral blood mononuclear cells and by purified monocytes, myeloid dendritic cells (mDC), plasmacytoid dendritic cells (pDC), and monocyte-derived macrophages (MDM), and –dendritic cells (MDDC) in response to poly I:C, lipopolysaccharide (LPS), imiquimod and CpG oligonucleotides. We found that in response to poly I:C and LPS, monocytes, MDM and MDDC express a subtype pattern restricted primarily to IFN-β and IFN-λ1. In addition, while CpG elicited expression of all type I IFN subtypes by pDC, imiquimod did not. Furthermore, MDM and mDC highly express IFN-λ, and the subtypes of IFN-λ are expressed hierarchically in the order IFN-λ1 followed by IFN-λ2, and then IFN-λ3. These data support a model of coordinated cell- and ligand-specific expression of types I and III IFN. Defining IFN subtype expression profiles in a variety of contexts may elucidate specific roles for IFN subtypes as protective, therapeutic or pathogenic mediators.
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