Disabling of the erbB Pathway Followed by IFN-γ Modifies Phenotype and Enhances Genotoxic Eradication of Breast Tumors
Reversion of the malignant phenotype of erbB2-transformed cells can be driven by anti-erbB2/neu monoclonal antibodies (mAbs), which disrupt the receptor’s kinase activity. We examined the biologic effects of IFN-γ alone or after anti-erbB2/neu mAb treatment of erbB2-positive cells. IFN-γ had no effe...
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doaj-304448b05718466dbb6979a5d4c42c9d2020-11-25T01:52:32ZengElsevierCell Reports2211-12472015-09-0112122049205910.1016/j.celrep.2015.08.044Disabling of the erbB Pathway Followed by IFN-γ Modifies Phenotype and Enhances Genotoxic Eradication of Breast TumorsYasuhiro Nagai0Hiromichi Tsuchiya1E. Aaron Runkle2Peter D. Young3Mei Q. Ji4Larry Norton5Jeffrey A. Drebin6Hongtao Zhang7Mark I. Greene8Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, 3620 Hamilton Walk, Philadelphia, PA 19104-6082, USADepartment of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, 3620 Hamilton Walk, Philadelphia, PA 19104-6082, USADepartment of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, 3620 Hamilton Walk, Philadelphia, PA 19104-6082, USADepartment of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, 3620 Hamilton Walk, Philadelphia, PA 19104-6082, USADepartment of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, 3620 Hamilton Walk, Philadelphia, PA 19104-6082, USADepartment of Medical Oncology, Memorial Sloan Kettering, New York, NY 10065, USADepartment of Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USADepartment of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, 3620 Hamilton Walk, Philadelphia, PA 19104-6082, USADepartment of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, 3620 Hamilton Walk, Philadelphia, PA 19104-6082, USAReversion of the malignant phenotype of erbB2-transformed cells can be driven by anti-erbB2/neu monoclonal antibodies (mAbs), which disrupt the receptor’s kinase activity. We examined the biologic effects of IFN-γ alone or after anti-erbB2/neu mAb treatment of erbB2-positive cells. IFN-γ had no effect on its own. Treatment of the tumors with anti-erbB2/neu mAbs followed by IFN-γ led to dramatic inhibition of tumor growth in vitro and in vivo with minimal mAb dosing. Sequential therapy enhanced the effects of chemotherapy. Moreover, IFN-γ with mAb treatment of mice with IFNγR knockdown tumors did not demonstrate marked synergistic eradication effects, indicating an unexpected role of IFN-γ on the tumor itself. Additionally, mAb and IFN-γ treatment also induced immune host responses that enhanced tumor eradication. Biochemical analyses identified loss of Snail expression in tumor cells, reflecting diminution of tumor-stem-cell-like properties as a consequence of altered activity of GSK3-β and KLF molecules.http://www.sciencedirect.com/science/article/pii/S2211124715009298 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yasuhiro Nagai Hiromichi Tsuchiya E. Aaron Runkle Peter D. Young Mei Q. Ji Larry Norton Jeffrey A. Drebin Hongtao Zhang Mark I. Greene |
spellingShingle |
Yasuhiro Nagai Hiromichi Tsuchiya E. Aaron Runkle Peter D. Young Mei Q. Ji Larry Norton Jeffrey A. Drebin Hongtao Zhang Mark I. Greene Disabling of the erbB Pathway Followed by IFN-γ Modifies Phenotype and Enhances Genotoxic Eradication of Breast Tumors Cell Reports |
author_facet |
Yasuhiro Nagai Hiromichi Tsuchiya E. Aaron Runkle Peter D. Young Mei Q. Ji Larry Norton Jeffrey A. Drebin Hongtao Zhang Mark I. Greene |
author_sort |
Yasuhiro Nagai |
title |
Disabling of the erbB Pathway Followed by IFN-γ Modifies Phenotype and Enhances Genotoxic Eradication of Breast Tumors |
title_short |
Disabling of the erbB Pathway Followed by IFN-γ Modifies Phenotype and Enhances Genotoxic Eradication of Breast Tumors |
title_full |
Disabling of the erbB Pathway Followed by IFN-γ Modifies Phenotype and Enhances Genotoxic Eradication of Breast Tumors |
title_fullStr |
Disabling of the erbB Pathway Followed by IFN-γ Modifies Phenotype and Enhances Genotoxic Eradication of Breast Tumors |
title_full_unstemmed |
Disabling of the erbB Pathway Followed by IFN-γ Modifies Phenotype and Enhances Genotoxic Eradication of Breast Tumors |
title_sort |
disabling of the erbb pathway followed by ifn-γ modifies phenotype and enhances genotoxic eradication of breast tumors |
publisher |
Elsevier |
series |
Cell Reports |
issn |
2211-1247 |
publishDate |
2015-09-01 |
description |
Reversion of the malignant phenotype of erbB2-transformed cells can be driven by anti-erbB2/neu monoclonal antibodies (mAbs), which disrupt the receptor’s kinase activity. We examined the biologic effects of IFN-γ alone or after anti-erbB2/neu mAb treatment of erbB2-positive cells. IFN-γ had no effect on its own. Treatment of the tumors with anti-erbB2/neu mAbs followed by IFN-γ led to dramatic inhibition of tumor growth in vitro and in vivo with minimal mAb dosing. Sequential therapy enhanced the effects of chemotherapy. Moreover, IFN-γ with mAb treatment of mice with IFNγR knockdown tumors did not demonstrate marked synergistic eradication effects, indicating an unexpected role of IFN-γ on the tumor itself. Additionally, mAb and IFN-γ treatment also induced immune host responses that enhanced tumor eradication. Biochemical analyses identified loss of Snail expression in tumor cells, reflecting diminution of tumor-stem-cell-like properties as a consequence of altered activity of GSK3-β and KLF molecules. |
url |
http://www.sciencedirect.com/science/article/pii/S2211124715009298 |
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