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Zhang Y, Zhu M, Pan J, Qiu Q, Tong X, Hu X, Gong C. BmCPV replication is suppressed by the activation of the NF-κB/autophagy pathway through the interaction of vsp21 translated by vcircRNA_000048 with ubiquitin carboxyl-terminal hydrolase. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2023; 156:103947. [PMID: 37086910 DOI: 10.1016/j.ibmb.2023.103947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/16/2023] [Accepted: 04/16/2023] [Indexed: 05/03/2023]
Abstract
Bombyx mori cypovirus (BmCPV), a typical double-stranded RNA virus, was demonstrated to generate a viral circRNA, vcircRNA_000048, which encodes a vsp21 with 21 amino acid residues to suppress viral replication. However, the regulatory mechanism of vsp21 on virus infection remained unclear. This study discovered that vsp21 induces reactive oxygen species (ROS) generation, activates autophagy, and attenuates virus replication by inducing autophagy. Then we confirmed that the effect of vsp21-induced autophagy on viral replication was attributed to the activation of the NF-κB signaling pathway. Furthermore, we clarified that vsp21 interacted with ubiquitin carboxyl-terminal hydrolase (UCH) and that ubiquitination and degradation of phospho-IκB-α were enhanced by vsp21 via competitive binding to UCH. Finally, we validated that vsp21 activates the NF-κB/autophagy pathway to suppress viral replication by interacting with UCH. These findings provided new insights into regulating viral multiplication and reovirus-host interaction.
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Affiliation(s)
- Yunshan Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Min Zhu
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Jun Pan
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Qunnan Qiu
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Xinyu Tong
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China
| | - Xiaolong Hu
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China; Institute of Agricultural Biotechnology and Ecological Research, Soochow University, Suzhou, 215123, China
| | - Chengliang Gong
- School of Biology & Basic Medical Science, Soochow University, Suzhou, 215123, China; Institute of Agricultural Biotechnology and Ecological Research, Soochow University, Suzhou, 215123, China.
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Jneid B, Bochnakian A, Hoffmann C, Delisle F, Djacoto E, Sirven P, Denizeau J, Sedlik C, Gerber-Ferder Y, Fiore F, Akyol R, Brousse C, Kramer R, Walters I, Carlioz S, Salmon H, Malissen B, Dalod M, Piaggio E, Manel N. Selective STING stimulation in dendritic cells primes antitumor T cell responses. Sci Immunol 2023; 8:eabn6612. [PMID: 36638189 DOI: 10.1126/sciimmunol.abn6612] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
T cells that recognize tumor antigens are crucial for mounting antitumor immune responses. Induction of antitumor T cells in immunogenic tumors depends on STING, the intracellular innate immune receptor for cyclic guanosine monophosphate-adenosine monophosphate (cGAMP) and related cyclic dinucleotides (CDNs). However, the optimal way to leverage STING activation in nonimmunogenic tumors is still unclear. Here, we show that cGAMP delivery by intratumoral injection of virus-like particles (cGAMP-VLP) led to differentiation of circulating tumor-specific T cells, decreased tumor regulatory T cells (Tregs), and antitumoral responses that synergized with PD1 blockade. By contrast, intratumoral injection of the synthetic CDN ADU-S100 led to tumor necrosis and systemic T cell activation but simultaneously depleted immune cells from injected tumors and induced minimal priming of circulating tumor-specific T cells. The antitumor effects of cGAMP-VLP required type 1 conventional dendritic cells (cDC1), whereas ADU-S100 eliminated cDC1 from injected tumors. cGAMP-VLP preferentially targeted STING in dendritic cells at a 1000-fold smaller dose than ADU-S100. Subcutaneous administration of cGAMP-VLP showed synergy when combined with PD1 blockade or a tumor Treg-depleting antibody to elicit systemic tumor-specific T cells and antitumor activity, leading to complete and durable tumor eradication in the case of tumor Treg depletion. These findings show that cell targeting of STING stimulation shapes the antitumor T cell response and identify a therapeutic strategy to enhance T cell-targeted immunotherapy.
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Affiliation(s)
- Bakhos Jneid
- Institut Curie, PSL Research University, INSERM U932, Paris, France
| | - Aurore Bochnakian
- Institut Curie, PSL Research University, INSERM U932, Paris, France.,Stimunity, Paris, France
| | - Caroline Hoffmann
- Institut Curie, INSERM U932 Immunity and Cancer, Department of Surgical Oncology, PSL University, Paris, France
| | - Fabien Delisle
- Institut Curie, PSL Research University, INSERM U932, Paris, France
| | - Emeline Djacoto
- Institut Curie, PSL Research University, INSERM U932, Paris, France
| | - Philémon Sirven
- Institut Curie, PSL Research University, INSERM U932, Paris, France
| | - Jordan Denizeau
- Institut Curie, PSL Research University, INSERM U932, Paris, France
| | - Christine Sedlik
- Institut Curie, PSL Research University, INSERM U932, Paris, France
| | | | - Frédéric Fiore
- Centre d'Immunophénomique (CIPHE), Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Ramazan Akyol
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Carine Brousse
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | | | | | | | - Hélène Salmon
- Institut Curie, PSL Research University, INSERM U932, Paris, France
| | - Bernard Malissen
- Centre d'Immunophénomique (CIPHE), Aix Marseille Université, INSERM, CNRS, 13288 Marseille, France
| | - Marc Dalod
- Aix-Marseille University, CNRS, INSERM, CIML, Centre d'Immunologie de Marseille-Luminy, Turing Center for Living Systems, Marseille, France
| | - Eliane Piaggio
- Institut Curie, PSL Research University, INSERM U932, Paris, France
| | - Nicolas Manel
- Institut Curie, PSL Research University, INSERM U932, Paris, France
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Zhou HC, Guo CA, Yu WW, Yan XY, Long JP, Liu ZC, Liang XQ, Liu HB. Zizyphus jujuba cv. Muzao polysaccharides enhance intestinal barrier function and improve the survival of septic mice. J Food Biochem 2021; 45:e13722. [PMID: 33855723 DOI: 10.1111/jfbc.13722] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 03/15/2021] [Accepted: 03/22/2021] [Indexed: 11/28/2022]
Abstract
This study aimed to examine the role of Zizyphus jujuba cv. Muzao polysaccharides (ZJPs) in protecting intestinal barrier function and the survival of septic mice. The sepsis mouse model was generated through cecal ligation and puncture (CLP) to observe the effect of ZJPs on the function of the intestinal barrier in the context of sepsis. We observed the clinical symptoms and survival time of the mice and evaluated serum inflammatory cytokines, intestinal pathological changes and intestinal permeability. Moreover, tight junction (TJ) proteins and apoptosis-associated proteins in intestinal tissue were examined. Finally, TLR4/NF-κB pathway-related proteins were measured in all groups. The results showed that pretreatment with ZJPs improved clinical and histological scores and reduced intestinal barrier permeability, and the levels of proinflammatory factors were decreased. Pretreatment with ZJPs also upregulated the levels of TJ proteins and downregulated the expression of proapoptotic proteins. Moreover, the activation of TLR4/NF-κB signaling was partly inhibited in septic mice by ZJPs pretreatment. The current study provides evidence that ZJPs have the potential to protect intestinal barrier function and improve the survival of septic mice via the attenuation of TLR4/NF-κB inflammatory signaling. PRACTICAL APPLICATIONS: This study reports the potential protective effect of ZJPs against cecal ligation and puncture (CLP)-induced sepsis. Our data reveal that CLP induced damage to the gut mucosal barrier, inflammation, and apoptosis in intestinal tissues. However, pretreatment with ZJPs improved clinical and histological scores, reduced intestinal barrier permeability, and decreased the levels of proinflammatory factors in mice. Pretreatment with ZJPs also upregulated the levels of TJ proteins and downregulated the expression of proapoptotic proteins. Moreover, the activation of TLR4/NF-κB signaling was partly inhibited in septic mice after ZJPs pretreatment. These findings provide evidence that pretreatment with ZJPs has the potential to attenuate CLP-induced gut damage in mice by restraining inflammation and apoptosis via the attenuation of NF-κB signaling. It provides a basis for further study of ZJPs in sepsis.
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Affiliation(s)
- Hai-Cun Zhou
- Second Clinical Medical College, Lanzhou University, Lanzhou, P.R. China.,Department of General Surgery, Gansu Maternal and Child Health Care Hospital, Lanzhou, P.R. China.,Department of General Surgery, The 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou, P.R. China
| | - Chang-An Guo
- Second Clinical Medical College, Lanzhou University, Lanzhou, P.R. China.,Department of General Surgery, The 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou, P.R. China
| | - Wen-Wen Yu
- Second Clinical Medical College, Lanzhou University, Lanzhou, P.R. China.,Department of General Surgery, The 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou, P.R. China
| | - Xin-Yan Yan
- Department of General Surgery, Gansu Maternal and Child Health Care Hospital, Lanzhou, P.R. China
| | - Jian-Ping Long
- Department of General Surgery, Gansu Maternal and Child Health Care Hospital, Lanzhou, P.R. China
| | - Zhi-Chang Liu
- Second Clinical Medical College, Lanzhou University, Lanzhou, P.R. China.,Department of General Surgery, The 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou, P.R. China
| | - Xiao-Qin Liang
- Second Clinical Medical College, Lanzhou University, Lanzhou, P.R. China.,Department of General Surgery, The 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou, P.R. China.,Pathology Department, Gansu Province People Hospital, Lanzhou, P.R. China
| | - Hong-Bin Liu
- Second Clinical Medical College, Lanzhou University, Lanzhou, P.R. China.,Department of General Surgery, The 940th Hospital of Joint Logistics Support Force of Chinese People's Liberation Army, Lanzhou, P.R. China.,Clinical Medical College, Northwest Minzu University, Lanzhou, P.R. China
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