Abstract:
:Enhanced SNHG1 (small nucleolar RNA host gene 1) expression has been found to play a critical role in the initiation and progression of hepatocellular carcinoma (HCC) with its detailed mechanism largely unknown. In this study, we show that SNHG1 promotes the HCC progression through epigenetically silencing CDKN1A and CDKN2B in the nucleus, and competing with CDK4 mRNA for binding miR-140-5p in the cytoplasm. Using bioinformatics analyses, we found hepatocarcinogenesis is particularly associated with dysregulated expression of SNHG1 and activation of the cell cycle pathway. SNHG1 was upregulated in HCC tissues and cells, and its knockdown significantly inhibited HCC cell cycle, growth, metastasis, and epithelial-mesenchymal transition (EMT) both in vitro and in vivo. Chromatin immunoprecipitation and RNA immunoprecipitation assays demonstrate that SNHG1 inhibit the transcription of CDKN1A and CDKN2B through enhancing EZH2 mediated-H3K27me3 in the promoter of CDKN1A and CDKN2B, thus resulting in the de-repression of the cell cycle. Dual-luciferase assay and RNA pulldown revealed that SNHG1 promotes the expression of CDK4 by competitively binding to miR-140-5p. In conclusion, we propose that SNHG1 formed a regulatory network to confer an oncogenic function in HCC and SNHG1 may serve as a potential target for HCC diagnosis and treatment.
journal_name
Cell Death Disjournal_title
Cell death & diseaseauthors
Li B,Li A,You Z,Xu J,Zhu Sdoi
10.1038/s41419-020-03031-6subject
Has Abstractpub_date
2020-10-02 00:00:00pages
823issue
10issn
2041-4889pii
10.1038/s41419-020-03031-6journal_volume
11pub_type
杂志文章abstract::It is largely recognized that fibroblast activation protein (FAP) is expressed in cancer-associated fibroblasts (CAFs) of many human carcinomas. Furthermore, FAP was recently also reported to be expressed in carcinoma cells of the breast, stomach, pancreatic ductal adenocarcinoma, colorectum, and uterine cervix. The c...
journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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abstract::Hepatocellular carcinoma is the sixth most common cancer and gives rise to numerous deaths around the world every year. However, the molecular mechanism that controls hepatocarcinogenesis remains largely unknown. Here we found out an uncharacterized long noncoding RNA named lncAKHE. We found that lncAKHE was highly ex...
journal_title:Cell death & disease
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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abstract::Hepatocellular carcinoma (HCC) represents the second cause of cancer-related mortality worldwide and is associated with poor prognosis, especially in patients not amenable for curative treatments. The multi-kinase inhibitor sorafenib represents the first-line treatment option for advanced HCC; nevertheless, its effect...
journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
pub_type: 杂志文章,评审
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journal_title:Cell death & disease
pub_type: 杂志文章,评审
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journal_title:Cell death & disease
pub_type: 杂志文章
doi:10.1038/cddis.2013.445
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abstract::Heme oxygenase-1 (HO-1), an inducible enzyme up-regulated in Alzheimer's disease, catabolises heme to biliverdin, Fe2+ and carbon monoxide (CO). CO can protect neurones from oxidative stress-induced apoptosis by inhibiting Kv2.1 channels, which mediates cellular K+ efflux as an early step in the apoptotic cascade. Sin...
journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章,评审
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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abstract::Inhibitors of apoptosis (IAP) proteins contribute to cell death resistance in malignancies and emerged as promising targets in cancer therapy. Currently, small molecules mimicking the IAP-antagonizing activity of endogenous second mitochondria-derived activator of caspases (SMAC) are evaluated in phase 1/2 clinical tr...
journal_title:Cell death & disease
pub_type: 杂志文章
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abstract::Bone metastasis is a severe complication of advanced breast cancer, resulting in osteolysis and increased mortality in patients. Raddeanin A (RA), isolated from traditional Chinese herbs, is an oleanane-type triterpenoid saponin with anticancer potential. In this study, we investigated the effects of RA in breast canc...
journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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