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Cell Physiol Biochem. 2011;27(1):37-44. doi: 10.1159/000325203. Epub 2011 Feb 11.

AMID mediates adenosine-induced caspase-independent HuH-7 cell apoptosis.

Author information

  • 1Laboratory of Molecular Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, Chine.

Abstract

BACKGROUND/AIMS:

The mechanism underlying extracellular adenosine-induced caspase-independent apoptosis in HuH-7 human hepatoma cells is not fully understood. The present study investigated the role for apoptosis-inducing factor (AIF)-homologous mitochondrion-associated inducer of death (AMID) in the pathway.

METHODS:

To see the implication of AMID in adenosine-induced HuH-7 cell apoptosis, real-time reverse transcription-polymerase chain reaction (RT-PCR), immunofluorescent cytochemistry, time-laps GFP monitoring, cell cycle analysis, flow cytometry, Western blotting, cell viability assay, and TUNEL staining were carried out.

RESULTS:

Adenosine upregulated AMID expression in HuH-7 cells, and translocated AMID from the cytosol into the nucleus. Adenosine induced HuH-7 cell apoptosis, and the effect was further enhanced by overexpressing AMID. Adenosine-induced HuH-7 cell apoptosis, alternatively, was inhibited by knocking-down AMID.

CONCLUSION:

The results of the present study provide evidence for AMID as a critical factor for adenosine-induced caspase-independent HuH-7 cell apoptosis.

Copyright © 2011 S. Karger AG, Basel.

PMID:
21325820
[PubMed - indexed for MEDLINE]
PMCID:
PMC3221265
Free PMC Article

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