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Wang T, Yu N, Qian M, Feng J, Cao S, Yin J, Zhang Q. ERK-mediated autophagy promotes inactivated Sendai virus (HVJ-E)-induced apoptosis in HeLa cells in an Atg3-dependent manner. Cancer Cell Int 2018; 18:200. [PMID: 30534001 PMCID: PMC6280409 DOI: 10.1186/s12935-018-0692-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 11/27/2018] [Indexed: 12/23/2022] Open
Abstract
Background Apoptosis and autophagy are known to play important roles in cancer development. It has been reported that HVJ-E induces apoptosis in cancer cells, thereby inhibiting the development of tumors. To define the mechanism by which HVJ-E induces cell death, we examined whether HVJ-E activates autophagic and apoptotic signaling pathways in HeLa cells. Methods Cells were treated with chloroquine (CQ) and rapamycin to determine whether autophagy is involved in HVJ-E-induced apoptosis. Treatment with the ERK inhibitor, U0126, was used to determine whether autophagy and apoptosis are mediated by the ERK pathway. Activators of the PI3K/Akt/mTOR/p70S6K pathway, 740 Y-P and SC79, were used to characterize its role in HVJ-E-induced autophagy. siRNA against Atg3 was used to knock down the protein and determine whether it plays a role in HVJ-E-induced apoptosis in HeLa cells. Results We found that HVJ-E infection inhibited cell viability and induced apoptosis through the mitochondrial pathway, as evidenced by the expression of caspase proteins. This process was promoted by rapamycin treatment and inhibited by CQ treatment. HVJ-E-induced autophagy was further blocked by 740 Y-P, SC79, and U0126, indicating that both the ERK- and the PI3K/Akt/mTOR/p70S6K-pathways were involved. Finally, autophagy-mediated apoptosis induced by HVJ-E was inhibited by siRNA-mediated Atg3 knockdown. Conclusion In HeLa cells, HVJ-E infection triggered autophagy through the PI3K/Akt/mTOR/p70S6K pathway in an ERK1/2-dependent manner, and the induction of autophagy promoted apoptosis in an Atg3-dependent manner.
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Affiliation(s)
- Tao Wang
- 1Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou, 225009 China.,2Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009 Jiangsu China
| | - Ning Yu
- 1Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou, 225009 China.,2Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009 Jiangsu China
| | - Miao Qian
- 1Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou, 225009 China.,2Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009 Jiangsu China.,4College of Medicine, Yangzhou University, Yangzhou, 225009 China
| | - Jie Feng
- Shanghai Laboratory Animal Research Center, Shanghai, 201203 China
| | - Shuyang Cao
- 1Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou, 225009 China.,2Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009 Jiangsu China
| | - Jun Yin
- 1Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou, 225009 China.,2Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009 Jiangsu China
| | - Quan Zhang
- 1Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, 12 Wenhui East Road, Yangzhou, 225009 China.,2Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, 225009 Jiangsu China
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Zhang Q, Zhu H, Xu X, Li L, Tan H, Cai X. Inactivated Sendai virus induces apoptosis and autophagy via the PI3K/Akt/mTOR/p70S6K pathway in human non-small cell lung cancer cells. Biochem Biophys Res Commun 2015; 465:64-70. [PMID: 26235873 DOI: 10.1016/j.bbrc.2015.07.130] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 07/26/2015] [Indexed: 11/25/2022]
Abstract
Inactivated Sendai virus (HVJ-E) has shown potential anticancer efficacy in various cancer cells. However, the ability of HVJ-E to regulate cancer cell survival and death remains largely unknown. In the present study we first found that HVJ-E exhibited cytotoxic effects in the non-small cell lung cancer cell (NSCLC) line A549 and cisplatin-resistant A549 cells (A549/DDP). The suppression of cell viability was due to both the activation of caspases and the JNK and p38 MAPK signaling pathways in A549 and A549/DDP human lung cancer cells. In addition, we demonstrated that HVJ-E could induce autophagy in NSCLC cells via the PI3K/Akt/mTOR/p70S6K signaling pathway for the first time. Inhibiting autophagy in A549/DDP cells and inducing autophagy in A549 cells enhanced HVJ-E-induced apoptosis. These findings provide a molecular basis of HVJ-E-mediated cell death and support the notion that combination treatment with autophagy modulators is an effective strategy to augment the cytotoxic effects of HVJ-E in NSCLC cells.
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Affiliation(s)
- Quan Zhang
- Comparative Medicine Center, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, Jiangsu, China.
| | - Huixia Zhu
- Comparative Medicine Center, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Xiaoshuang Xu
- Comparative Medicine Center, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Lingyu Li
- Comparative Medicine Center, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Haiming Tan
- Comparative Medicine Center, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Xiaoyao Cai
- Comparative Medicine Center, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, Jiangsu, China
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Zhang Q, Xu X, Yuan Y, Gong X, Chen Z, Xu X. IPS-1 plays a dual function to directly induce apoptosis in murine melanoma cells by inactivated Sendai virus. Int J Cancer 2013; 134:224-34. [PMID: 23784981 DOI: 10.1002/ijc.28340] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 05/28/2013] [Indexed: 12/24/2022]
Abstract
Inactivated Sendai virus (HVJ-E) directly kills cancer cells by inducing apoptosis through a mechanism mediated by Janus kinases/signal transducers and activators of transcription (JAK/STAT) signaling pathways. However, whether other signaling pathways are involved remain largely unknown. This study aimed to investigate the mechanism underlying HVJ-E-induced apoptosis in murine B16F10 melanoma cells. We found that HVJ-E induced B16F10 cell apoptosis via the caspase pathway, particularly caspase-9, which mediates the intrinsic apoptotic pathway. Mitogen-activated protein kinase (MAPK) pathway activation also contributed to HVJ-E-induced apoptosis. Whereas caspase pathway involvement depended on both IFN-β promoter stimulator-1 (IPS-1) and type I interferon (IFN), MAPK pathway activation was independent of type I IFN but involved IPS-1. In addition, intratumoral HVJ-E treatment displayed a direct oncolytic effect in an in vivo BALB/c nude mouse melanoma model. Collectively, our data provides new insights into the mechanism underlying HVJ-E-induced apoptosis in tumor cells.
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Affiliation(s)
- Quan Zhang
- Comparative Medicine Center, College of Veterinary Medicine, Yangzhou University, Yangzhou, China
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