ArticleInternational journal of medical sciences2013
PML(NLS(-)) inhibits cell apoptosis and promotes proliferation in HL-60 cells.
Article in International journal of medical sciences, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 8 citations in OpenAlex.
- Multipronged regulation of autophagy and apoptosis: emerging role of TRIM proteins.Cellular & molecular biology letters · 2024Review
- Location of NLS-RARα protein in NB4 cell and nude mice.Oncology letters · 2017Article
- Neutrophil elastase enhances the proliferation and decreases apoptosis of leukemia cells via activation of PI3K/Akt signaling.Molecular medicine reports · 2016Article
- The function, regulation and therapeutic implications of the tumor suppressor protein, PML.Cell & bioscience · 2015Review
- Deacetylation of the tumor suppressor protein PML regulates hydrogen peroxide-induced cell death.Cell death & disease · 2014Article
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5 authors at 1 institution in 1 country.
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Abstract
Promyelocytic leukemia (PML) is a cell-growth suppressor, and PML-retinoic acid receptor α (PML-RARα) is known as a fusion gene of acute promyelocytic leukemia (APL). Studies have reported that neutrophil elastase(NE) cleaved bcr-1-derived PML-RARα in early myeloid cells leading to the removal of nuclear localization signal (NLS) from PML. The resultant PML without NLS named PML(NLS(-)). PML(NLS(-)) mainly locates and functions in the cytoplasm. PML(NLS(-)) may act in different ways from PML, but its biological characteristics have not been reported. In this study, the PML (NLS(-)) was silenced with shRNA [HL-60/pPML(NLS(-))-shRNA] and over-expressed by preparation of recombinant adenovirus [HL-60/pAd-PML(NLS(-))]. The mRNA and protein expression of PML(NLS(-)) were detected by RT-PCR and Western blot respectively. Cell proliferation in vitro was assessed by MTT assay. Flow cytometry (FCM) was used to detect apoptotic cells. The transcription of BCL-2, BAX and C-MYC was detected in HL-60/pAd-PML(NLS(-)) cells. Our results showed that compared to the control group, the expression of PML(NLS(-)) was significantly reduced in the HL-60/pPML(NLS(-))-shRNA cells, and increased significantly in the HL-60/pAd-PML(NLS(-)) cells. The proliferation was significantly inhibited in the HL-60/pPML(NLS(-))-shRNA cells in a time-dependent manner, but markedly promoted in the HL-60/pAd-PML(NLS(-)) cells treated with 60 μmol/L emodin. FCM revealed the apoptosis increased in HL-60/pPML(NLS(-))-shRNA cells, and decreased in the HL-60/pAd-PML(NLS(-)) cells. The expression of BAX decreased significantly, while that of BCL-2 and C-MYC increased significantly in HL-60/ pAd-PML(NLS(-)) cells. Down-regulation of PML(NLS(-)) expression inhibits the proliferation and induces the apoptosis of HL-60 cells. On the contrary, over-expression of PML(NLS(-)) promotes the proliferation and reduce the emodin-induced apoptosis of HL-60 cells.
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