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Crosstalk between different family members: IL27 recapitulates IFN γ responses in HCC cells, but is inhibited by IL6-type cytokines
In this study, we show that IL27 induces STAT1 and STAT3 phosphorylation in 5 HCC lines and 3 different types of non-transformed liver cells. We were especially interested in the relevance of the IL27-induced STAT3 activation in liver cells. Thus, we compared the IL27 responses with those induced by IFNγ (STAT1-dominated response) or IL6-type cytokines (IL6, hyper-IL6 (hy-IL6) or OSM) (STAT3-dominated response) by microarray analysis and find that in HCC cells, IL27 induces an IFNγ-like, STAT1-dependent transcriptional response, but we do not find an effective STAT3-dependent response. Validation experiments corroborate ...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - December 9, 2016 Category: Molecular Biology Source Type: research

Hyper-dependence of breast cancer cell types on the nuclear transporter Importin β1
Publication date: August 2015 Source:Biochimica et Biophysica Acta (BBA) - Molecular Cell Research, Volume 1853, Issue 8 Author(s): Henna V. Kuusisto , David A. Jans We previously reported that overexpression of members of the Importin (Imp) superfamily of nuclear transporters results in increased nuclear trafficking through conventional transport pathways in tumour cells. Here we show for the first time that the extent of overexpression of Impβ1 correlates with disease state in the MCF10 human breast tumour progression system. Excitingly, we find that targeting Impβ1 activity through siRNA is >30 times more eff...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - June 10, 2015 Category: Molecular Biology Source Type: research