Abstract:
:In the present study, mutL homolog 1 (MLH1) small interfering (si)RNA, KU‑55933, an ataxia‑telangiectasia mutated (ATM) inhibitor, and compound C, an adenosine monophosphate‑activated protein kinase (AMPK) inhibitor, were used to investigate the mechanisms underlying temozolomide (TMZ)‑induced autophagy and to determine the role of MLH1 and ATM in autophagy. MLH1 siRNA and KU‑55933 inhibited the phosphorylation of AMPK and ULK1 and reduced the levels of autophagy. MLH1 siRNA inhibited the phosphorylation of ATM and attenuated TMZ cytotoxicity, whereas the inhibition of ATM‑AMPK augmented TMZ cytotoxicity in inherently TMZ‑sensitive glioma cells. Therefore, TMZ induced autophagy via the ATM‑AMPK pathways and the activation of ATM‑AMPK was MLH1‑dependent. The inhibition of ATM‑AMPK enhanced TMZ cytotoxicity in inherently TMZ‑sensitive glioma cells.
journal_name
Mol Med Repjournal_title
Molecular medicine reportsauthors
Zou Y,Wang Q,Wang Wdoi
10.3892/mmr.2015.3293subject
Has Abstractpub_date
2015-06-01 00:00:00pages
4591-6issue
6eissn
1791-2997issn
1791-3004journal_volume
11pub_type
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