Journal
ONCOLOGY LETTERS
Volume 18, Issue 4, Pages 3433-3442Publisher
SPANDIDOS PUBL LTD
DOI: 10.3892/ol.2019.10713
Keywords
Epstein-Barr virus; microRNA; nasopharyngeal carcinoma; gastric carcinoma; tumorigenicity; immune regulation
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Funding
- Medical Research Fund, Commission of Health and Family Plan of the Province of Guangdong [A2018356]
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The Epstein-Barr virus (EBV) is tightly associated with a variety of human tumors, including Burkitt lymphoma and acquired immune deficiency syndrome-related lymphoma of B-cell origin, as well as nasopharyngeal carcinoma and gastric cancer of epithelial origin. The virus latently infects the host cells and expresses proteins and non-coding RNAs to achieve malignancy. MicroRNAs (miRNAs or miRs) are small RNAs consisting of 19-25 nucleotides, which directly bind to the 3'-untranslated region of mRNAs to promote degradation and inhibit translation of mRNAs. EBV-encoded miRs are generated from two regions of the viral genome, within the apoptosis regulator BHRF1 gene locus and near the BamHI A region in a latency type-dependent manner. In addition, EBV-encoded miRs epigenetically regulate the expression of molecules that are effectors of the cell cycle progression, migration, apoptosis and innate immunity, serving a vital role in supporting viral replication and occurrence of EBV-associated tumors. The feasibility of using such miRs as biomarkers for the diagnosis and prognosis of EBV-associated tumors is currently under investigation.
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