Abstract:
:Autophagy genes were first identified in the yeast system and some of their mammalian orthologues have also been characterized. Increasing lines of evidence indicate that various intracellular proteins, including G proteins, mammalian target of rapamycin (mTor) and Pl3K/Akt/PKB, of transmembrane signaling pathways are involved in the regulation of autophagy genes. We have recently discovered autophagy as a mechanism of cell death in atherosclerotic vascular smooth muscle cells (VSMCs). Tumor necrosis factor-alpha (TNF-alpha), insulin-like growth factor-1 (IGF-1), and 7-ketocholesterol can regulate the expression of autophagic genes, including microtubule-associated protein 1 light chain-3 (MAP1LC3) and Beclin 1, through Akt/PKB and c-jun N-terminal signal pathways in VSMCs. However, the balance between cell death and survival of VSMCs in the fibrous cap of atherosclerotic plaques appears to best correlate with plaque instability. Understanding the underlying cellular and molecular mechanisms of autophagy can provide key insights into the cell death machinery of atherosclerotic diseases.
journal_name
Autophagyjournal_title
Autophagyauthors
Jia G,Cheng G,Agrawal DKdoi
10.4161/auto.3427subject
Has Abstractpub_date
2007-01-01 00:00:00pages
63-4issue
1eissn
1554-8627issn
1554-8635pii
3427journal_volume
3pub_type
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