Abstract:
:Tumor necrosis factor‑related apoptosis-inducing ligand (TRAIL) is well known as a transmembrane cytokine and has been proposed as one of the most effective anti‑cancer therapeutic agents, owing to its efficiency to selectively induce cell death in a variety of tumor cells. Suppression of autophagy flux has been increasingly acknowledged as an effective and novel therapeutic intervention for cancer. The present study demonstrated that the anti‑cancer and anti‑inflammatory drug celastrol, through its anti‑metastatic properties, may initiate TRAIL‑mediated apoptotic cell death in lung cancer cells. This sensitization was negatively affected by N‑acetyl‑l‑cysteine, which restored the mitochondrial membrane potential (ΔΨm) and inhibited reactive oxygen species (ROS) generation. Notably, treatment with celastrol caused an increase in microtubule‑associated proteins 1A/1B light chain 3B‑II and p62 levels, whereas co‑treatment of celastrol and TRAIL increased active caspase 3 and 8 levels compared with the control, confirming inhibited autophagy flux. The combined use of TRAIL with celastrol may serve as a safe and adequate therapeutic technique for the treatment of TRAIL‑resistant lung cancer, suggesting that celastrol‑mediated autophagy flux inhibition sensitized TRAIL‑initiated apoptosis via regulation of ROS and ΔΨm.
journal_name
Mol Med Repjournal_title
Molecular medicine reportsauthors
Nazim UM,Yin H,Park SYdoi
10.3892/mmr.2018.9757subject
Has Abstractpub_date
2019-02-01 00:00:00pages
984-993issue
2eissn
1791-2997issn
1791-3004journal_volume
19pub_type
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