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Chen W, Chang Y, Sun C, Xu M, Dong M, Zhao N, Wang Y, Zhang J, Xu N, Liu W. A novel circular RNA circNLRP3 alleviated ricin toxin-induced TNF-α production through sponging miR-221-5p. Toxicon 2023; 224:107046. [PMID: 36702354 DOI: 10.1016/j.toxicon.2023.107046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/22/2023] [Accepted: 01/22/2023] [Indexed: 01/24/2023]
Abstract
Acting as microRNA (miRNA) sponges, circular RNAs (circRNAs) have been discovered to be critical modulators of inflammatory processes. Ricin Toxin (RT) is highly toxic to mammalian cells and low doses of RT can induce acute inflammation. However, current researches on the underlying mechanism and function of circRNA/miRNA network in RT-induced inflammation are limited. Previously, we found miR-221-5p was aberrant and associated with the inflammation of RT induction. In this study, based on the circRNA high-throughput sequencing (circRNA-seq), we obtained a novel circRNA termed circNLRP3 and revealed that circNLRP3 can sponge miR-221-5p, release its target mRNA A20, and further suppress NF-κB signaling pathway to alleviated RT-induced TNF-α production. Our findings elucidated a possible mechanistic link between the circNLRP3/miR-221-5p/A20 axis and RT-induced inflammatory response, which may broaden our understanding of RT poisoning.
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Affiliation(s)
- Wei Chen
- Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, 133002, Jilin, PR China
| | - Ying Chang
- Jilin Medical University, Jilin, 132013, Jilin, PR China
| | - Chengbiao Sun
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, 130122, Jilin, PR China
| | - Meng Xu
- College of Life Science, Jilin Agricultural University, Changchun, 130118, Jilin, PR China
| | - Mingxin Dong
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, 130122, Jilin, PR China
| | - Na Zhao
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, 130122, Jilin, PR China
| | - Yan Wang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, 130122, Jilin, PR China
| | - Jianxu Zhang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, 130122, Jilin, PR China
| | - Na Xu
- Jilin Medical University, Jilin, 132013, Jilin, PR China.
| | - Wensen Liu
- Department of Physiology and Pathophysiology, College of Medicine, Yanbian University, Yanji, 133002, Jilin, PR China; Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, 130122, Jilin, PR China.
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Role of differentiated embryo-chondrocyte expressed gene 1 (DEC1) in immunity. Int Immunopharmacol 2021; 102:107892. [PMID: 34215553 DOI: 10.1016/j.intimp.2021.107892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 06/06/2021] [Accepted: 06/13/2021] [Indexed: 11/23/2022]
Abstract
Differentiated embryo-chondrocyte expressed gene 1 (DEC1) belongs to the family of basic helix-loop-helix (bHLH)-type transcription factors. DEC1 is expressed in various mammalian cells, but early studies focused on its roles outside the immune system. In recent years, relevant studies have found that DEC1 plays an important role in the immunotherapy of tumors, the functional regulation of the immune system, and the onset of autoimmune diseases. DEC1 promotes interferon (IFN)-γand granulocyte-macrophage colony-stimulating factor (GM-CSF) secretion through the production of CD4+ T cells, which promotes inflammatory defense responses and autoimmune diseases. Additionally, DEC1 can inhibit the expression of interleukin (IL)-10 to further strengthen the immune response. In this review, we summarized recent advances in our understanding of the roles of DEC1 in animal models and human cells, including regulating immune cell differentiation, controlling cytokine production, and maintaining the balance of pro- and anti-inflammatory signals.
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Wang JG, Jian WJ, Li Y, Zhang J. Nobiletin promotes the pyroptosis of breast cancer via regulation of miR-200b/JAZF1 axis. Kaohsiung J Med Sci 2021; 37:572-582. [PMID: 33728753 DOI: 10.1002/kjm2.12371] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 12/16/2020] [Accepted: 01/14/2021] [Indexed: 12/21/2022] Open
Abstract
Nobiletin is a polymethoxylated flavone present in citrus fruits, which has been reported to have inhibitory effects on tumorigenesis of cancers. However, the biological function of nobiletin in breast cancer (BC) is largely unknown. To investigate the effect of nobiletin on growth of BC cells, the cell viability of BC was measured by MTT assay. In addition, gene and protein expressions were detected by qRT-PCR and western blot, respectively. The apoptosis and pyroptosis of BC cells were tested by flow cytometry. Finally, the correlation between miR-200b and JAZF1 was detected by dual luciferase report. The data indicated that nobiletin inhibited the proliferation of BC cells in a dose-dependent manner. Moreover, miR-200b mimics-induced pyroptosis of BC cells was further increased by nobiletin. Meanwhile, JAZF1 was found to be the target of miR-200b. Moreover, nobiletin induced apoptosis and pyroptosis of BC cells via miR-200b/JAZF1/NF-κB axis. In conclusion, nobiletin inhibited the tumorigenesis of BC via regulation of miR-200b/JAZF1 axis. Thus, nobiletin might serve as a new agent for the treatment of BC.
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Affiliation(s)
- Ji-Guo Wang
- Department of Oncology, Shenzhen Baoan Hospital of Traditional Chinese Medicine, Shenzhen, China
| | - Wen-Jing Jian
- Department of Breast Surgery, The Second People's Hospital of Shenzhen, Shenzhen, China
| | - Yang Li
- Department of Oncology, Shenzhen Baoan Hospital of Traditional Chinese Medicine, Shenzhen, China
| | - Jing Zhang
- Department of Oncology, Shenzhen Baoan Hospital of Traditional Chinese Medicine, Shenzhen, China
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Canh NX, Giang NV, Nghia VX, Sopjani M, Ngan NTT, Hoang NH, Xuan NT. Regulation of cell activation by A20 through STAT signaling in acute lymphoblastic leukemia. J Recept Signal Transduct Res 2020; 41:331-338. [PMID: 32808859 DOI: 10.1080/10799893.2020.1808678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Acute lymphoblastic leukemia (ALL) is the hematologic malignancy characterized by the aberrant proliferation of immature lymphoid cells. A20 is a deubiquitinase gene that inhibits functional activation of immune cells mediated through NF-κB/STAT pathways and frequently found inactivated in lymphoma. IL-6 is a pro-inflammatory cytokine secreted by immune cells under the pathogenic conditions and regulated by STAT signaling. Little is known about the role of A20 in regulating the function of ALL blasts and underlying molecular mechanisms. The present study, therefore, explored whether A20 expression contributes to IL-6 induced cell migration and activation of myeloid cells in ALL. To this end, blood samples of thirty-five adult ALL patients were examined. Gene expression profile was determined by quantitative RT-PCR, immunophenotype by flow cytometry, secretion of inflammatory cytokines by ELISA, and cell migration by a transwell migration assay. As a result, the expression of A20 was inactivated in ALL. Immunophenotypic analysis indicated that percent of CD11b+CD40+ expressing cells present in ALL was significantly reduced when transfected with PEM-T easy A20. Importantly, IL6-induced CXCL12-mediated migration of ALL blasts was dependent on the presence of A20. The inhibitory effects of A20 on activated myeloid cells and migration of ALL blasts were mediated through the STAT pathway upon IL-6 challenge. In addition, the CA-125 level was much higher in elderly females than either young female or male ALL patients or healthy donors. In conclusion, the inhibitory effects of A20 on activation of ALL blasts are expected to affect the immune response to treatment for adult ALL patients.
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Affiliation(s)
- Nguyen Xuan Canh
- Faculty of Biotechnology, Vietnam National University of Agriculture, Hanoi, Vietnam
| | - Nguyen Van Giang
- Faculty of Biotechnology, Vietnam National University of Agriculture, Hanoi, Vietnam
| | | | - Mentor Sopjani
- Faculty of Medicine, University of Prishtina, Prishtinë, Kosova
| | - Nguyen Thi Thanh Ngan
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam.,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ha Noi, Vietnam
| | - Nguyen Huy Hoang
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam.,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ha Noi, Vietnam
| | - Nguyen Thi Xuan
- Institute of Genome Research, Vietnam Academy of Science and Technology, Hanoi, Vietnam.,Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Ha Noi, Vietnam
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The function and regulation of OTU deubiquitinases. Front Med 2019; 14:542-563. [PMID: 31884527 DOI: 10.1007/s11684-019-0734-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 10/31/2019] [Indexed: 12/19/2022]
Abstract
Post-translational modification of cellular proteins by ubiquitin regulates numerous cellular processes, including cell division, immune responses, and apoptosis. Ubiquitin-mediated control over these processes can be reversed by deubiquitinases (DUBs), which remove ubiquitin from target proteins and depolymerize polyubiquitin chains. Recently, much progress has been made in the DUBs. In humans, the ovarian tumor protease (OTU) subfamily of DUBs includes 16 members, most of which mediate cell signaling cascades. These OTUs show great variation in structure and function, which display a series of mechanistic features. In this review, we provide a comprehensive analysis of current progress in character, structure and function of OTUs, such as the substrate specificity and catalytic activity regulation. Then we discuss the relationship between some diseases and OTUs. Finally, we summarize the structure of viral OTUs and their function in immune escape and viral survival. Despite the challenges, OTUs might provide new therapeutic targets, due to their involvement in key regulatory processes.
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