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Tang H, Qin S, Li Z, Gao W, Tang M, Dong X. Early immune system alterations in patients with septic shock. Front Immunol 2023; 14:1126874. [PMID: 36845110 PMCID: PMC9947342 DOI: 10.3389/fimmu.2023.1126874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 01/31/2023] [Indexed: 02/11/2023] Open
Abstract
This study aims to investigate the early changes in the immune systems of patients with septic shock. A total of 243 patients with septic shock were included in this study. The patients were classified as survivors (n = 101) or nonsurvivors (n = 142). Clinical laboratories perform tests of the immune system's function. Each indicator was studied alongside healthy controls (n = 20) of the same age and gender as the patients. A comparative analysis of every two groups was conducted. Univariate and multivariate logistic regression analyses were performed to identify mortality risk factors that are independent of one another. In septic shock patients, neutrophil counts, infection biomarkers (C-reactive protein, ferritin, and procalcitonin levels), and cytokines (IL-1β, IL-2R, IL-6, IL-8, IL-10, and TNF-α) increased significantly. Lymphocyte and their subset counts (T, CD4+ T, CD8+ T, B, and natural killer cell counts), lymphocyte subset functions (the proportions of PMA/ionomycin-stimulated IFN-γ positive cells in CD4+ T cells), immunoglobulin levels (IgA, IgG, and IgM), and complement protein levels (C3 and C4) decreased significantly. Compared to survivors, nonsurvivors had higher levels of cytokines (IL-6, IL-8, and IL-10) but lower levels of IgM, complement C3 and C4, and lymphocyte, CD4+, and CD8+ T cell counts. Low IgM or C3 concentrations and low lymphocyte or CD4+ T cell counts were independent risk factors for mortality. These alterations should be considered in the future development of immunotherapies aimed at treating septic shock.
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Affiliation(s)
- Huiming Tang
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shuang Qin
- Department of Radiation Oncology, Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhanfei Li
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Gao
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Manli Tang
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xijie Dong
- Trauma Center/Department of Emergency and Traumatic Surgery, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Lv C, Zhang Q, Zhao L, Yang J, Zou Z, Zhao Y, Li C, Sun X, Lin X, Jin M. African swine fever virus infection activates inflammatory responses through downregulation of the anti-inflammatory molecule C1QTNF3. Front Immunol 2022; 13:1002616. [PMID: 36311798 PMCID: PMC9598424 DOI: 10.3389/fimmu.2022.1002616] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 09/26/2022] [Indexed: 11/13/2022] Open
Abstract
African swine fever (ASF) is the most dangerous pig disease, and causes enormous economic losses in the global pig industry. However, the mechanisms of ASF virus (ASFV) infection remains largely unclear. Hence, this study investigated the host response mechanisms to ASFV infection. We analyzed the differentially expressed proteins (DEPs) between serum samples from ASFV-infected and uninfected pigs using quantitative proteomics. Setting the p-value < 0.05 and |log2 (fold change)| > 1.5, we identified 173 DEPs, comprising 57 upregulated and 116 downregulated proteins, which belonged to various biological processes and pathways based on the Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analyses. The enriched pathways include immune responses, metabolism, and inflammation signaling pathways. Western blot analysis validated the DEPs identified using quantitative proteomics. Furthermore, our proteomics data showed that C1QTNF3 regulated the inflammatory signaling pathway. C1QTNF3 knockdown led to the upregulation of pro-inflammatory factors IL-1β, IL-8, and IL-6, thus inhibiting ASFV replication. These results indicated that C1QTNF3 was critical for ASFV infection. In conclusion, this study revealed the molecular mechanisms underlying the host-ASFV interaction, which may contribute to the development of novel antiviral strategies against ASFV infection in the future.
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Affiliation(s)
- Changjie Lv
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- New-onset department, Research Institute of Wuhan Keqian Biology Co., Ltd, Wuhan, China
- Department of pig disease prevention and control, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Qiang Zhang
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, China
| | - Li Zhao
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, China
| | - Jingyu Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan, China
| | - Zhong Zou
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- New-onset department, Research Institute of Wuhan Keqian Biology Co., Ltd, Wuhan, China
| | - Ya Zhao
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Department of pig disease prevention and control, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Chengfei Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Department of pig disease prevention and control, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Xiaomei Sun
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Department of pig disease prevention and control, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
| | - Xian Lin
- CAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- *Correspondence: Xian Lin, ; Meilin Jin,
| | - Meilin Jin
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- New-onset department, Research Institute of Wuhan Keqian Biology Co., Ltd, Wuhan, China
- Department of pig disease prevention and control, The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, China
- *Correspondence: Xian Lin, ; Meilin Jin,
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Wang Z, Chen J, Gao C, Xiao Q, Wang X, Tang S, Li Q, Zhong B, Song Z, Shu H, Li L, Wu M. Epigenetic Dysregulation Induces Translocation of Histone H3 into Cytoplasm. Adv Sci (Weinh) 2021; 8:e2100779. [PMID: 34363353 PMCID: PMC8498869 DOI: 10.1002/advs.202100779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/10/2021] [Indexed: 06/13/2023]
Abstract
In eukaryote cells, core components of chromatin, such as histones and DNA, are packaged in nucleus. Leakage of nuclear materials into cytosol will induce pathological effects. However, the underlying mechanisms remain elusive. Here, cytoplasmic localization of nuclear materials induced by chromatin dysregulation (CLIC) in mammalian cells is reported. H3K9me3 inhibition by small chemicals, HP1α knockdown, or knockout of H3K9 methylase SETDB1, induces formation of cytoplasmic puncta containing histones H3.1, H4 and cytosolic DNA, which in turn activates inflammatory genes and autophagic degradation. Autophagy deficiency rescues H3 degradation, and enhances the activation of inflammatory genes. MRE11, a subunit of MRN complex, enters cytoplasm after heterochromatin dysregulation. Deficiency of MRE11 or NBS1, but not RAD50, inhibits CLIC puncta in cytosol. MRE11 depletion represses tumor growth enhanced by HP1α deficiency, suggesting a connection between CLIC and tumorigenesis. This study reveals a novel pathway that heterochromatin dysregulation induces translocation of nuclear materials into cytoplasm, which is important for inflammatory diseases and cancer.
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Affiliation(s)
- Zhen Wang
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
| | - Ji Chen
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
| | - Chuan Gao
- College of Life SciencesWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
- Department of ImmunologyMedical Research InstituteSchool of MedicineWuhan UniversityWuhan430071China
| | - Qiong Xiao
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
| | - Xi‐Wei Wang
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
| | - Shan‐Bo Tang
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
| | - Qing‐Lan Li
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
| | - Bo Zhong
- College of Life SciencesWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
- Department of ImmunologyMedical Research InstituteSchool of MedicineWuhan UniversityWuhan430071China
| | - Zhi‐Yin Song
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
| | - Hong‐Bing Shu
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
- Department of ImmunologyMedical Research InstituteSchool of MedicineWuhan UniversityWuhan430071China
| | - Lian‐Yun Li
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
| | - Min Wu
- College of Life SciencesWuhan UniversityWuhan430072China
- Hubei Key Laboratory of Cell HomeostasisHubei Key Laboratory of Developmentally Originated DiseaseHubei Key Laboratory of EnteropathyWuhan UniversityWuhan430072China
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhan430072China
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