Abstract | PURPOSE: EXPERIMENTAL DESIGN: The effects of carfilzomib and ONX 0912 on HNSCC cell survival and xenograft tumor growth were evaluated. The impact and mechanisms of both agents on apoptosis and autophagy induction were also investigated. The contribution of the unfolded protein response (UPR) to autophagy induction and the role of autophagy in attenuating HNSCC cell death were determined. RESULTS: CONCLUSIONS: These results show that carfilzomib and ONX 0912 are potently active against HNSCC cells, and the activities of these agents can be enhanced via suppression of Mcl-1 or inhibition of autophagy. Oral ONX 0912 exhibits in vivo activity against HNSCC tumors and may represent a useful therapeutic agent for this malignancy.
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Authors | Yan Zang, Sufi M Thomas, Elena T Chan, Christopher J Kirk, Maria L Freilino, Hannah M DeLancey, Jennifer R Grandis, Changyou Li, Daniel E Johnson |
Journal | Clinical cancer research : an official journal of the American Association for Cancer Research
(Clin Cancer Res)
Vol. 18
Issue 20
Pg. 5639-49
(Oct 15 2012)
ISSN: 1557-3265 [Electronic] United States |
PMID | 22929803
(Publication Type: Journal Article, Research Support, N.I.H., Extramural)
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Copyright | ©2012 AACR |
Chemical References |
- Antinematodal Agents
- Mcl1 protein, mouse
- Myeloid Cell Leukemia Sequence 1 Protein
- ONX 0912
- Oligopeptides
- Proto-Oncogene Proteins c-bcl-2
- carfilzomib
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Topics |
- Animals
- Antinematodal Agents
(administration & dosage)
- Apoptosis
(drug effects)
- Autophagy
(drug effects)
- Cell Line, Tumor
- Cell Proliferation
(drug effects)
- Cell Survival
(drug effects)
- Cell Transformation, Neoplastic
(drug effects)
- Gene Expression Regulation, Neoplastic
(drug effects)
- Head and Neck Neoplasms
(drug therapy, metabolism, pathology)
- Humans
- Mice
- Myeloid Cell Leukemia Sequence 1 Protein
- Neoplasms, Squamous Cell
(drug therapy, metabolism, pathology)
- Oligopeptides
(administration & dosage)
- Proto-Oncogene Proteins c-bcl-2
(metabolism)
- Transplantation, Heterologous
- Unfolded Protein Response
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