Metastatic melanoma cells evade immune detection by silencing STAT1.
Metastatic melanoma cells evade immune detection by silencing STAT1.
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DOI:
10.3390/ijms16024343
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发表时间:
2015-02-17
影响因子:
5.6
通讯作者:
Greer SF
中科院分区:
文献类型:
--
作者:
Osborn JL;Greer SF
Transcriptional activation of major histocompatibility complex (MHC) I and II molecules by the cytokine, interferon γ (IFN-γ), is a key step in cell-mediated immunity against pathogens and tumors. Recent evidence suggests that suppression of MHC I and II expression on multiple tumor types plays important roles in tumor immunoevasion. One such tumor is malignant melanoma, a leading cause of skin cancer-related deaths. Despite growing awareness of MHC expression defects, the molecular mechanisms by which melanoma cells suppress MHC and escape from immune-mediated elimination remain unknown. Here, we analyze the dysregulation of the Janus kinase (JAK)/STAT pathway and its role in the suppression of MHC II in melanoma cell lines at the radial growth phase (RGP), the vertical growth phase (VGP) and the metastatic phase (MET). While RGP and VGP cells both express MHC II, MET cells lack not only MHC II, but also the critical transcription factors, interferon response factor (IRF) 1 and its upstream activator, signal transducer and activator of transcription 1 (STAT1). Suppression of STAT1 in vitro was also observed in patient tumor samples, suggesting STAT1 silencing as a global mechanism of MHC II suppression and immunoevasion.
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影响因子:
--
作者:
Enderling H;Hlatky L;Hahnfeldt P
通讯作者:
Hahnfeldt P
影响因子:
--
作者:
Lin, Feng;Shen, Xuefei;Sardesai, Niranjan Y.
通讯作者:
Sardesai, Niranjan Y.
影响因子:
3.9
作者:
Ciarletta, P.;Foret, L.;Ben Amar, M.
通讯作者:
Ben Amar, M.
影响因子:
1.4
作者:
Cichorek M;Wachulska M;Stasiewicz A;Tymińska A
通讯作者:
Tymińska A
影响因子:
16.6
作者:
Haabeth, Ole Audun Werner;Lorvik, Kristina Berg;Hammarstrom, Clara;Donaldson, Ian M.;Haraldsen, Guttorm;Bogen, Bjarne;Corthay, Alexandre
通讯作者:
Corthay, Alexandre