Journal
MOLECULAR THERAPY-ONCOLYTICS
Volume 12, Issue -, Pages 112-123Publisher
CELL PRESS
DOI: 10.1016/j.omto.2018.12.006
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Funding
- National Natural Science Foundation of China [81672902, 81372561]
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Previous studies showed that the COpper Metabolism gene MURR1 Domain (COMMD) family of proteins was abnormally expressed in hepatocellular carcinoma (HCC). This study aimed to explore the roles of COMMD1 and COMMD7 in regulating nuclear factor kappa B (NF-kappa B) signaling in HCC stem cells (HCSCs). In vivo, the expression of COMMD7 and COMMD1 was determined in 35 pairs of HCC cancer tissues and adjacent tissues, and the effect of COMMD7 silencing on xenograft tumor growth was evaluated. In vitro, the effects of COMMD7 silencing and COMMD1 overexpression on HCSC function were assessed. Results found that the expression levels of COMMD7 were higher, whereas COMMD1 levels were lower in HCC tissues and HCSCs. COMMD7 silencing or COMMD1 overexpression inhibited cell proliferation, migration, and invasion through suppression of NF-kappa B p65. Furthermore, COMMD7 positively regulated NF-kappa B by upregulating protein inhibitor for activated stat 4 (PIAS4). This study demonstrates that COMMD7 has a dual regulatory role in the NF-kB signaling pathway in Nanog(+) HCSCs.
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