Carcinogenesis, Teratogenesis & Mutagenesis ›› 2019, Vol. 31 ›› Issue (5): 352-358.doi: 10.3969/j.issn.1004-616x.2019.05.003

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Human herpesvirus 6A subtype affects the expression of LncRNA MEG3,proliferation,apoptosis and EMT process in glioma cells

WAN Xin1, HU Yue2, ZHANG Ju1, CHEN Yun3, JIN Peipei1   

  1. 1. Department of Laboratory Medicine, The First Affiliated Hospital of University of Science and Technology of China/Anhui Provincial Hospital, Hefei 230036;
    2. Prenatal Diagnosis Center, The First Affiliated Hospital of USTC/Anhui Provincial Hospital, Hefei 230036, Anhui;
    3. Department of Microbiology and Immunology, Nanjing Medical University, Nanjing 211100, Jiangsu, China
  • Received:2019-03-15 Revised:2019-06-19 Online:2019-09-30 Published:2019-10-09

Abstract: OBJECTIVE:The glioma-associated long non-coding RNA (LncRNA) MEG3 was preliminarily selected and detected in glioma tissues. Its expression in glioma cells together with proliferation,apoptosis,invasion and transformation of glioma cells were investigated after HHV-6A infection. METHODS:Expression of LncRNA MEG3 in 37 glioma,4 para-tumor tissues and 18 normal brain tissues,or HHV-6A infected glioma cells were measured by Real-time quantitative PCR. The D(450) value of HHV-6A infected glioma cells were assayed by using cell counting kit-8 method. The frequencies of apoptotic cells were detected by flow cytometry. The cell healing ability was monitored by the wound-healing assay. The epithelial-mesenchymal transition (EMT)-related proteins were evaluated by Western blot. RESULTS:Expression of LncRNA MEG3 was significantly lower in glioma tissues than in para-tumor tissues (P < 0.05). Expression of LncRNA MEG3 showed a down-regulation in glioma or normal glial cells after HHV-6A infection (P < 0.05). The apoptotic rates of HHV-6A infected glioma cells were significantly lower than that in the control group[(6.05±0.40)% and (8.23±0.75)%,respectively,P < 0.05]. The wound healing ability of glioma cells after HHV-6A infection was significantly better than that of the control group[(72.33±6.90)% and (43.67±6.30)%,respectively,P < 0.05]. Compared with the control group,expression of Snail and Vimentin were increased,while expression of Ecadherin was decreased in glioma cells after HHV-6A infection (P < 0.05). CONCLUSION:HHV-6A infection down-regulated the expression of LncRNA MEG3 in glial cells and glioma cells. The expression was associated with proliferation,invasion,epithelial-mesenchymal transition of glioma cells and inhibition of apoptosis.

Key words: glioma, long non-coding RNA MEG3, human herpesvirus 6A, epithelial-mesenchymal transition

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