Expression and function of lncRNA BDNF-AS in breast cancer / 中国肿瘤临床
Chinese Journal of Clinical Oncology
;
(24): 712-717, 2019.
Article
Dans Chinois
| WPRIM
| ID: wpr-791205
ABSTRACT
Objective:
To determine expression of brain-derived neurotrophic factor antisense (BDNF-AS) long non-coding RNA (ln-cRNA) in breast cancer, and to investigate its effects on proliferation, apoptosis, migration and invasion.Methods:
Between 2016 and 2018, samples from 88 cases of breast cancer were collected at the First Hospital of Lanzhou University. RT-qPCR was used to deter-mine expression of lncRNA BDNF-AS in breast cancer tissue and cells. A pcDNA3.1 plasmid was used to overexpress BDNF-AS in MDA-MB-231 cells. Cell viability was quantified using an MTT assay, proliferative capacity was determined using an EdU assay and a colori-metric assay was used to measure the Caspase-3 activity. Moreover, the protein levels of Bax, Bcl-2, MMP-9, E-cadherin, and BDNF were quantified by Western blot. Scratch and transwell assays were used to determine cell migration and invasion.Results:
Lower ln-cRNA BDNF-AS expression was observed in breast cancer tissue and cells compared with normal paracancerous tissues (P<0.05), and with normal, HBL-100 breast cells (P<0.01). BDNF-AS expression negatively correlated with tumor-node-metastasis (TNM) stage (P<0.05) and lymphatic metastasis (P<0.05) of breast cancer. Overexpression of BDNF-AS with the pcDNA3.1 plasmid decreased viability of MDA-MB-231 cells (P<0.01), EdU-positive cells (P<0.01), and Caspase-3 activity (P<0.01). Additionally, Bcl-2, MMP-9, and BDNF ex-pression was downregulated (P<0.01), while Bax and E-cadherin expression was upregulated (P<0.01). Overexpression of BDNF-AS al-so inhibited cell healing and invasion which were determined by scratch assays (P<0.01).Conclusions:
LncRNA BDNF-AS expression is downregulated in breast cancer, which inhibits breast cancer cell proliferation, migration, invasion, and promotes apoptosis.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
langue:
Chinois
Texte intégral:
Chinese Journal of Clinical Oncology
Année:
2019
Type:
Article
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