Abstract | BACKGROUND: METHODS: Induction of autophagy was detected by punctate LC3 fluorescence staining, LC3I to LC3II conversion on Western blot analysis, and electron microscopy. Enhanced growth inhibition and apoptosis were observed when PARP inhibitors were used with hydroxychloroquine, chloroquine (CQ), or LYS05 to block the hydrolysis of proteins and lipids in autophagosomes or with small interfering RNA against ATG5 or ATG7 to prevent the formation of autophagosomes. The preclinical efficacy of the combination of CQ and olaparib was evaluated with a patient-derived xenograft (PDX) and the OVCAR8 human ovarian cancer cell line. RESULTS: CONCLUSIONS:
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Authors | Janice M Santiago-O'Farrill, S John Weroha, Xiaonan Hou, Ann L Oberg, Ethan P Heinzen, Matthew J Maurer, Lan Pang, Philip Rask, Ravi K Amaravadi, Sarah E Becker, Ignacio Romero, Ma Jesús Rubio, Xavier Matias-Guiu, Maria Santacana, Antonio Llombart-Cussac, Andrés Poveda, Zhen Lu, Robert C Bast Jr |
Journal | Cancer
(Cancer)
Vol. 126
Issue 4
Pg. 894-907
(02 15 2020)
ISSN: 1097-0142 [Electronic] United States |
PMID | 31714594
(Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't)
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Copyright | © 2019 American Cancer Society. |
Chemical References |
- Antineoplastic Agents
- Indazoles
- Phthalazines
- Piperazines
- Piperidines
- Poly(ADP-ribose) Polymerase Inhibitors
- Chloroquine
- talazoparib
- Poly(ADP-ribose) Polymerases
- niraparib
- olaparib
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Topics |
- Animals
- Antineoplastic Agents
(pharmacology)
- Apoptosis
(drug effects)
- Autophagy
(drug effects)
- Cell Line, Tumor
- Chloroquine
(pharmacology)
- Drug Resistance, Neoplasm
(drug effects)
- Drug Synergism
- Female
- Humans
- Indazoles
(pharmacology)
- Mice, Nude
- Mice, SCID
- Ovarian Neoplasms
(drug therapy, metabolism, pathology)
- Phthalazines
(pharmacology)
- Piperazines
(pharmacology)
- Piperidines
(pharmacology)
- Poly(ADP-ribose) Polymerase Inhibitors
(pharmacology)
- Poly(ADP-ribose) Polymerases
(metabolism)
- Xenograft Model Antitumor Assays
(methods)
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