Abstract:
:Macroautophagy is a regulated bulk degradation process of cellular components, mainly long-lived proteins or cytoplasmic organelles. Nutrient depletion is a classic inducer of macroautophagy. In this report, we have induced heat-mediated macroautophagy in several cell lines in the absence of nutrient depletion. Heat treatment increased the autophagic markers LC3-I and LC3-II at the protein levels. Interestingly, expression of a constitutively active HSF1 mutant suppressed basal LC3-II protein level and heat-induced increase of LC3-II. Our results provide evidence that heat is a potent inducer of macroautophagy in mammalian cells, and implicate the negative role of active HSF1 in this process.
journal_name
Mol Biol Repjournal_title
Molecular biology reportsauthors
Zhao Y,Gong S,Shunmei E,Zou Jdoi
10.1007/s11033-009-9451-4subject
Has Abstractpub_date
2009-11-01 00:00:00pages
2323-7issue
8eissn
0301-4851issn
1573-4978journal_volume
36pub_type
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