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Xiong Y, Chen J, Liang W, Li K, Huang Y, Song J, Zhang B, Qiu X, Qiu D, Zhang Q, Qin Y. Blockade of the mitochondrial DNA release ameliorates hepatic ischemia-reperfusion injury through avoiding the activation of cGAS-Sting pathway. J Transl Med 2024; 22:796. [PMID: 39198913 PMCID: PMC11351313 DOI: 10.1186/s12967-024-05588-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 08/07/2024] [Indexed: 09/01/2024] Open
Abstract
BACKGROUND Liver surgery during the perioperative period often leads to a significant complication known as hepatic ischemia-reperfusion (I/R) injury. Hepatic I/R injury is linked to the innate immune response. The cGAS-STING pathway triggers the activation of innate immune through the detection of DNA within cells. Nevertheless, the precise mechanism and significance of the cGAS-STING pathway in hepatic I/R injury are yet to be investigated. METHODS Mouse model of hepatic I/R injury was used in the C57BL/6 WT mice and the STING knockout (STING-KO) mice. In addition, purified primary hepatocytes were used to construct oxygen-glucose deprivation reperfusion (OGD-Rep) treatment models. RESULTS Our research revealed a notable increase in mRNA and protein levels of cGAS and STING in liver during I/R injury. Interestingly, the lack of STING exhibited a safeguarding impact on hepatic I/R injury by suppressing the elevation of liver enzymes, liver cell death, and inflammation. Furthermore, pharmacological cGAS and STING inhibition recapitulated these phenomena. Macrophages play a crucial role in the activation of the cGAS-STING pathway during hepatic I/R injury. The cGAS-STING pathway experiences a significant decrease in activity and hepatic I/R injury is greatly diminished following the elimination of macrophages. Significantly, we demonstrate that the activation of the cGAS-STING pathway is primarily caused by the liberation of mitochondrial DNA (mtDNA) rather than nuclear DNA (nDNA). Moreover, the safeguarding of the liver against I/R injury is also attributed to the hindrance of mtDNA release through the utilization of inhibitors targeting mPTP and VDAC oligomerization. CONCLUSIONS The results of our study suggest that the release of mtDNA plays a significant role in causing damage to liver by activating the cGAS-STING pathway during I/R injury. Furthermore, inhibiting the release of mtDNA can provide effective protection against hepatic I/R injury.
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Affiliation(s)
- Yi Xiong
- Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, Guangdong, PR China
| | - Jiawen Chen
- Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, Guangdong, PR China
| | - Wei Liang
- Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, Guangdong, PR China
| | - Kun Li
- Department of Hepatic Surgery and Liver Transplantation Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, PR China
| | - Yingqi Huang
- Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, Guangdong, PR China
| | - Jingwen Song
- Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, Guangdong, PR China
| | - Baoyu Zhang
- Neurosurgery Department, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, PR China
| | - Xiusheng Qiu
- Vaccine Research Institute, The Third Affiliated Hospital of Sun Yat-sen University, Sun Yat- sen University, Guangzhou, 510630, Guangdong, PR China
| | - Dongbo Qiu
- Vaccine Research Institute, The Third Affiliated Hospital of Sun Yat-sen University, Sun Yat- sen University, Guangzhou, 510630, Guangdong, PR China.
| | - Qi Zhang
- Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, Guangdong, PR China.
- Vaccine Research Institute, The Third Affiliated Hospital of Sun Yat-sen University, Sun Yat- sen University, Guangzhou, 510630, Guangdong, PR China.
| | - Yunfei Qin
- Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510630, Guangdong, PR China.
- Vaccine Research Institute, The Third Affiliated Hospital of Sun Yat-sen University, Sun Yat- sen University, Guangzhou, 510630, Guangdong, PR China.
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Wang B, Zhang F, Wu X, Ji M. TBK1 is paradoxical in tumor development: a focus on the pathway mediating IFN-I expression. Front Immunol 2024; 15:1433321. [PMID: 39161768 PMCID: PMC11330819 DOI: 10.3389/fimmu.2024.1433321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Accepted: 07/22/2024] [Indexed: 08/21/2024] Open
Abstract
TANK-binding kinase 1 (TBK1) is a member of the IKK family and plays a crucial role in the activation of non-canonical NF-κB signaling and type I interferon responses. The aberrant activation of TBK1 contributes to the proliferation and survival of various types of tumor cells, particularly in specific mutational or tumorous contexts. Inhibitors targeting TBK1 are under development and application in both in vivo and in vitro settings, yet their clinical efficacy remains limited. Numerous literatures have shown that TBK1 can exhibit both tumor promoting and tumor inhibiting effects. TBK1 acts as a pivotal node within the innate immune pathway, mediating anti-tumor immunity through the activation of innate immune responses. Facilitating interferon-I (IFN-I) production represents a critical mechanism through which TBK1 bridges these processes. IFN has been shown to exert both beneficial and detrimental effects on tumor progression. Hence, the paradoxical role of TBK1 in tumor development may necessitate acknowledgment in light of its downstream IFN-I signaling cascade. In this paper, we review the signaling pathways mediated by TBK1 in various tumor contexts and summarize the dual roles of TBK1 and the TBK1-IFN pathways in both promoting and inhibiting tumor progression. Additionally, we highlight the significance of the TBK1-IFN pathway in clinical therapy, particularly in the context of immune response. We anticipate further advancements in the development of TBK1 inhibitors as part of novel cancer treatment strategies.
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Affiliation(s)
| | | | | | - Mei Ji
- Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, China
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Qin Y, Qiu D, Zhang Q. HNF1A regulates the crosstalk between innate immune responses and MAFLD by mediating autophagic degradation of TBK1. Autophagy 2023; 19:1026-1027. [PMID: 35944095 PMCID: PMC9980577 DOI: 10.1080/15548627.2022.2110728] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/03/2022] [Accepted: 08/03/2022] [Indexed: 11/02/2022] Open
Abstract
The selective macroautophagy/autophagy pathway is an important pathway of protein degradation, regulating signal transduction pathways via selective degradation of certain signaling complexes. TBK1 functions as a key protein in innate immunity or metabolic-associated fatty liver disease (MAFLD); however, the degradation of TBK1 has not been fully investigated. Recently, we have found that HNF1A functions as a novel cargo receptor to bridge TBK1 and MAP1LC3/LC3, hence promoting the degradation of TBK1 and regulating antiviral innate immunity and MAFLD.
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Affiliation(s)
- Yunfei Qin
- Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, PR China
- Institute of Vaccine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, PR China
| | - Dongbo Qiu
- Institute of Vaccine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, PR China
| | - Qi Zhang
- Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, PR China
- Institute of Vaccine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, PR China
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