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Mitochondrial defect-responsive gene signature in liver-cancer progression
Mitochondrial defect-responsive gene signature in liver-cancer progression
BMB Reports. 2015. Nov, 48(11): 597-598
Copyright © 2015, Korean Society for Biochemistry and Molecular Biology
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • Received : August 27, 2015
  • Published : November 30, 2015
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About the Authors
Young-Kyoung Lee
Department of Biomedical Science, Graduate School, Ajou University, Suwon 16499, Korea
Hyun Goo Woo
Department of Biomedical Science, Graduate School, Ajou University, Suwon 16499, Korea
Gyesoon Yoon
Department of Biomedical Science, Graduate School, Ajou University, Suwon 16499, Korea
ypeace@ajou.ac.kr

Abstract
Mitochondrial respiratory defect is a key bioenergetics feature of hepatocellular carcinoma (HCC) cells. However, their involvement and roles in HCC development and progression remain unclear. Recently, we identified 10 common mitochondrial defect (CMD) signature genes that may be induced by retrograde signaling-mediated transcriptional reprogramming in response to HCC mitochondrial defects. HCC patients with enriched expression of these genes had poor prognostic outcomes, such as shorter periods of overall survival and recurrence-free survival. Nuclear protein 1 ( NUPR1 ), a key transcription regulator, was up-regulated by Ca ++ -mediated retrograde signaling. NUPR1 -centric network analysis and a biochemical promoter-binding assay demonstrated that granulin ( GRN ) is a key downstream effector of NUPR1 for the regulation of HCC cell invasiveness; association analysis of the NUPR1-GRN pathway supported this conclusion. Mitochondrial respiratory defects and retrograde signaling thus play pivotal roles in HCC progression, highlighting the potential of the NUPR1-GRN axis as a novel diagnostic marker and therapeutic target for HCC. [BMB Reports 2015; 48(11): 597-598]
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Acknowledgements
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIP) (NRF-2012R1A5A2048183).
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