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Acta oto-laryngologica

High mobility group box 1 (HMGB1) is upregulated by the Epstein-Barr virus infection and promotes the proliferation of human nasopharyngeal carcinoma cells.


PMID 26382001

Abstract

The current study confirmed the significant high mobility group box 1 (HMGB1) was promoted in human nasopharyngeal carcinoma (NPC) tissues by Epstein-Barr virus (EBV) infection, in association with the malignant status of NPC, and promoted the proliferation NPC cells RAGE-dependently. The present study was to examine the association of HMGB1 over-expression in human NPC with the EBV-positivity and to determine the regulatory role of HMGB1 on the proliferation of NPC cells in vitro. Real-time PCR and Western blotting were utilized to examine the HMGB1 expression. EBV infection in CNE-2 cells was performed to investigate the HMGB1 promotion by EBV infection. RNA interference technology was utilized for the RAGE knockout. It was demonstrated that HMGB1 was significantly higher in both mRNA and protein levels in the EBV-positive NPC tissues, in marked association with the malignant status of NPC, and with the LMP1 DNA level in EBV-positive NPC samples. In addition, the MTT assay, growth curve, and the colony forming assay confirmed the promotion by HMGB1 to the proliferation of CNE-2 cells, depending on RAGE.

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EHU123971 MISSION® esiRNA, esiRNA human RAGE (esiRNA1)