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Nc886 is epigenetically repressed in prostate cancer and acts as a tumor suppressor through the inhibition of cell growth

Overview of attention for article published in BMC Cancer, February 2018
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Nc886 is epigenetically repressed in prostate cancer and acts as a tumor suppressor through the inhibition of cell growth
Published in
BMC Cancer, February 2018
DOI 10.1186/s12885-018-4049-7
Pubmed ID

Rafael Sebastián Fort, Cecilia Mathó, Murilo Vieira Geraldo, María Carolina Ottati, Alex Shimura Yamashita, Kelly Cristina Saito, Katia Ramos Moreira Leite, Manuel Méndez, Noemí Maedo, Laura Méndez, Beatriz Garat, Edna Teruko Kimura, José Roberto Sotelo-Silveira, María Ana Duhagon


Nc886 is a 102 bp non-coding RNA transcript initially classified as a microRNA precursor (Pre-miR-886), later as a divergent homologue of the vault RNAs (vtRNA 2-1) and more recently as a novel type of RNA (nc886). Although nc886/vtRNA2-1/Pre-miR-886 identity is still controversial, it was shown to be epigenetically controlled, presenting both tumor suppressor and oncogenic function in different cancers. Here, we study for the first time the role of nc886 in prostate cancer. Nc886 promoter methylation status and its correlation with patient clinical parameters or DNMTs levels were evaluated in TCGA and specific GEO prostate tissue datasets. Nc886 level was measured by RT-qPCR to compare normal/neoplastic prostate cells from radical prostatectomies and cell lines, and to assess nc886 response to demethylating agents. The effect of nc886 recovery in cell proliferation (in vitro and in vivo) and invasion (in vitro) was evaluated using lentiviral transduced DU145 and LNCaP cell lines. The association between the expression of nc886 and selected genes was analyzed in the TCGA-PRAD cohort. Nc886 promoter methylation increases in tumor vs. normal prostate tissue, as well as in metastatic vs. normal prostate tissue. Additionally, nc886 promoter methylation correlates with prostate cancer clinical staging, including biochemical recurrence, Clinical T-value and Gleason score. Nc886 transcript is downregulated in tumor vs. normal tissue -in agreement with its promoter methylation status- and increases upon demethylating treatment. In functional studies, the overexpression of nc886 in the LNCaP and DU145 cell line leads to a decreased in vitro cell proliferation and invasion, as well as a reduced in vivo cell growth in NUDE-mice tumor xenografts. Finally, nc886 expression associates with the prostate cancer cell cycle progression gene signature in TCGA-PRAD. Our data suggest a tumor suppressor role for nc886 in the prostate, whose expression is epigenetically silenced in cancer leading to an increase in cell proliferation and invasion. Nc886 might hold clinical value in prostate cancer due to its association with clinical parameters and with a clinically validated gene signature.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 30 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 30 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 5 17%
Student > Bachelor 4 13%
Student > Doctoral Student 3 10%
Student > Master 3 10%
Researcher 3 10%
Other 7 23%
Unknown 5 17%
Readers by discipline Count As %
Biochemistry, Genetics and Molecular Biology 12 40%
Medicine and Dentistry 3 10%
Agricultural and Biological Sciences 3 10%
Immunology and Microbiology 2 7%
Pharmacology, Toxicology and Pharmaceutical Science 1 3%
Other 2 7%
Unknown 7 23%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 13 February 2018.
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