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The oncoprotein HBXIP up-regulates SCG3 through modulating E2F1 and miR-509-3p in hepatoma cells.

Abstract
Hepatitis B X-interacting protein (HBXIP) is an important oncoprotein in hepatocarcinogenesis. Here, we found that the expression levels of HBXIP were positively associated with those of Secretogranin III (SCG3) in clinical hepatocellular carcinoma tissues. We identified that HBXIP up-regulated the expression of SCG3 through modulating both E2F transcription factor 1 (E2F1) and miR-509-3p. HBXIP suppressed miR-509-3p through activating NF-κB. In function, we showed that SCG3 increased the proliferation of hepatoma cells and HBXIP enhanced the proliferation of the cells via SCG3 in vitro and in vivo. Thus, we conclude that HBXIP facilitates the proliferation of hepatoma cells through up-regulating SCG3.
AuthorsYue Wang, Ming Cui, Xiaoli Cai, Baodi Sun, Fabao Liu, Xiaodong Zhang, Lihong Ye
JournalCancer letters (Cancer Lett) Vol. 352 Issue 2 Pg. 169-78 (Oct 01 2014) ISSN: 1872-7980 [Electronic] Ireland
PMID24882622 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
CopyrightCopyright © 2014 Elsevier Ireland Ltd. All rights reserved.
Chemical References
  • Adaptor Proteins, Signal Transducing
  • Chromogranins
  • E2F1 Transcription Factor
  • E2F1 protein, human
  • LAMTOR5 protein, human
  • MIRN509 microRNA, human
  • MicroRNAs
  • NF-kappa B
  • RNA, Messenger
  • SCG3 protein, human
Topics
  • Adaptor Proteins, Signal Transducing (genetics, metabolism)
  • Animals
  • Binding Sites
  • Carcinoma, Hepatocellular (genetics, metabolism, pathology)
  • Cell Proliferation
  • Chromogranins (genetics, metabolism)
  • E2F1 Transcription Factor (genetics, metabolism)
  • Gene Expression Regulation, Neoplastic
  • Hep G2 Cells
  • Humans
  • Liver Neoplasms (genetics, metabolism, pathology)
  • Mice
  • Mice, Inbred BALB C
  • Mice, Nude
  • MicroRNAs (genetics, metabolism)
  • NF-kappa B (metabolism)
  • Promoter Regions, Genetic
  • RNA Interference
  • RNA, Messenger (metabolism)
  • Signal Transduction
  • Time Factors
  • Transfection
  • Tumor Burden
  • Up-Regulation

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