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Published on: October 21, 2012
Interferon-β-armed oncolytic adenovirus induces both apoptosis and necroptosis in cancer cells
Hongling Huang1, Tian Xiao, Lingfeng He
1State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
Abstract:
Interferon-β (IFN-β) has been widely used in cancer therapy, but the clinical trial results are generally disappointing. Our previous studies have shown that an oncolytic adenovirus carrying IFN-β (ZD55-IFN-β) exhibits significant anti-tumor activities. However, the underlying mechanisms are not clear. Here we showed that ZD55-IFN-β infection-induced S-phase cell cycle arrest in a p53-dependent manner by activating the ataxia telangiectasia mutated-dependent DNA damage pathway. In addition, ZD55-IFN-β infection could initiate both caspase-dependent apoptosis and necroptosis in cancer cells. More importantly, ZD55-IFN-β showed a synergistic effect on cancer cells when combined with doxorubicin. These results suggest that the combination of ZD55-IFN-β with doxorubicin may represent a promising clinical strategy in cancer therapy.
Insights
Oncolytic adenovirus ZD55-IFN-β induces cancer cell cycle arrest and apoptosis. Combining ZD55-IFN-β with doxorubicin shows synergistic anti-tumor effects, suggesting a promising new cancer therapy strategy.
Area of Science:
- Oncolytic virotherapy
- Cancer biology
- Molecular oncology
Background:
- Interferon-beta (IFN-β) has limited efficacy in cancer therapy.
- Oncolytic adenovirus ZD55-IFN-β demonstrates anti-tumor potential.
- Mechanisms underlying ZD55-IFN-β's efficacy require elucidation.
Purpose of the Study:
- To investigate the anti-tumor mechanisms of ZD55-IFN-β.
- To evaluate the combination therapy of ZD55-IFN-β and doxorubicin.
Main Methods:
- In vitro studies on cancer cells infected with ZD55-IFN-β.
- Analysis of cell cycle progression and DNA damage pathways.
- Assessment of apoptosis and necroptosis induction.
- Evaluation of synergistic effects with doxorubicin.
Main Results:
- ZD55-IFN-β infection induces S-phase cell cycle arrest via p53 and ATM-dependent DNA damage pathways.
- ZD55-IFN-β triggers both caspase-dependent apoptosis and necroptosis in cancer cells.
- Combination of ZD55-IFN-β and doxorubicin exhibits synergistic anti-cancer activity.
Conclusions:
- ZD55-IFN-β employs multiple cell death pathways for anti-tumor effects.
- The combination of ZD55-IFN-β and doxorubicin presents a potent therapeutic strategy for cancer treatment.
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