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Feng Z, Fu J, Tang L, Bao C, Liu H, Liu K, Yang T, Yuan JH, Zhou CB, Zhang C, Xu R, Wang FS. HBeAg induces neutrophils activation impairing NK cells function in patients with chronic hepatitis B. Hepatol Int 2024; 18:1122-1134. [PMID: 38829576 DOI: 10.1007/s12072-024-10689-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Accepted: 04/21/2024] [Indexed: 06/05/2024]
Abstract
BACKGROUND The role of neutrophils in hepatitis B virus (HBV) infection has been a subject of debate due to their involvement in antiviral responses and immune regulation. This study aimed to elucidate the neutrophil characteristics in patients with chronic hepatitis B (CHB). METHODS Through flow cytometry and ribonucleic acid-sequencing analysis, the phenotypes and counts of neutrophils were analyzed in patients with CHB. Moreover, the effects of HBeAg on neutrophils and the corresponding pattern recognition receptors were identified. Simultaneously, the cross-talk between neutrophils and natural killer (NK) cells was investigated. RESULTS Neutrophils were activated in patients with CHB, characterized by higher expression levels of programmed death-ligand 1 (PD-L1), cluster of differentiation 86, and interleukin-8, and lower levels of CXC motif chemokine receptor (CXCR) 1 and CXCR2. Hepatitis B e antigen (HBeAg) partially induces neutrophil activation through the Toll-like receptor 2 (TLR2). A consistent upregulation of the TLR2 and HBeAg expression was observed in patients with CHB. Notably, the genes encoding molecules pivotal for NK-cell function upon NK receptor engagement enriched in neutrophils after HBeAg activation. The HBeAg-activated neutrophils demonstrated the ability to decrease the production of interferon-gamma (IFN-γ) and tumor necrosis factor-alpha (TNF-α) in NK cells, while the PD-1 and PD-L1 pathways partially mediated the immunosuppression. CONCLUSIONS The immunosuppression of neutrophils induced by HBeAg suggests a novel pathogenic mechanism contributing to immune tolerance in patients with CHB.
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Affiliation(s)
- Zhiqian Feng
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Junliang Fu
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Lili Tang
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Chunmei Bao
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Honghong Liu
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Kai Liu
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Tao Yang
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Jin-Hong Yuan
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Chun-Bao Zhou
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Chao Zhang
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Ruonan Xu
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China.
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.
| | - Fu-Sheng Wang
- Senior Department of Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China.
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.
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2
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Wang N, Shi XL, Li D, Li BB, Liu P, Luo H. Neutrophil extracellular traps - an a-list-actor in a variety of diseases. Ann Hematol 2024:10.1007/s00277-024-05915-5. [PMID: 39078437 DOI: 10.1007/s00277-024-05915-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 07/25/2024] [Indexed: 07/31/2024]
Abstract
Neutrophil extracellular traps (NETs) represent a response mechanism in which activated neutrophils release DNA-based webs, adorned with histones and neutrophil proteases, to capture and eliminate invasive microorganisms. However, when these neutrophils become excessively activated, much more proteases associated with NETs are liberated into surrounding tissues or bloodstreams, thereby altering the cellular milieu and causing tissue damage. Recent research has revealed that NETs may play significant roles in the emergence and progression of various diseases, spanning from infections, inflammation to autoimmune disorders and cancers. In this review, we delve deeply into the intricate and complex mechanisms that underlie the formation of NETs and their profound interplay with various clinical pathologies. We aim to describe the application perspectives of NETs related proteins in specific disease diagnosis and treatment.
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Affiliation(s)
- Na Wang
- College of Medical Laboratory, Dalian Medical University, Dalian, Liaoning, 116044, PR China
- Department of Central Lab, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, 264200, PR China
| | - Xiao-Lin Shi
- Department of Clinical Laboratory, Weihai Maternal and Child Health Hospital, Weihai, Shandong, 264200, PR China
| | - Dan Li
- Department of Central Lab, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, 264200, PR China
| | - Bin-Bin Li
- Department of Central Lab, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, 264200, PR China
| | - Peng Liu
- Department of Central Lab, Weihai Municipal Hospital, Cheeloo College of Medicine, Shandong University, Weihai, Shandong, 264200, PR China.
| | - Hong Luo
- College of Medical Laboratory, Dalian Medical University, Dalian, Liaoning, 116044, PR China.
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3
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Nonaka K, Kawase K, Takagi K, Takatsu Y, Maniwa K, Takao C, Komura M, Mushika Y, Takeuchi N, Kato T, Kusakabe M, Kondo M. Development of Fournier's gangrene after chemotherapy for the recurrence of testicular cancer despite the absence of anorectal lesions: A case report. Medicine (Baltimore) 2024; 103:e38688. [PMID: 39058861 PMCID: PMC11272336 DOI: 10.1097/md.0000000000038688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Accepted: 06/03/2024] [Indexed: 07/28/2024] Open
Abstract
BACKGROUND Fournier's gangrene usually occurs when a specific bacterium intrudes into soft tissue, causing a wound or tumor. We encountered a patient with Fournier's gangrene due to severe myelosuppression after chemotherapy, despite the absence of an initial lesion on the anus and rectum. CASE PRESENTATION A 54-year-old man with a left testicular cancer recurrence had undergone chemotherapy. He had asymptomatic hepatitis and high hepatitis B virus DNA levels, which were normalized by administering tenofovir alafenamide fumarate. Twelve days after the start of chemotherapy, he complained of severe pain around the anus. The following day, he went into septic shock. Visual inspection showed dark purple skin discoloration on the left side of the anus. Laboratory data revealed severe neutropenia. Computed tomography showed a high density of soft tissue on the left side of the anus and gas bubbles in the left femoral ring. We diagnosed the patient with Fournier's gangrene due to a severe immunosuppressive state resulting from chemotherapy. We emergently removed necrotic tissue to the fullest extent possible. However, because the patient was in severe sepsis status, careful management in the intensive care unit was required for 32 days. After the first emergency operation, we performed several additional excisions. Finally, 391 days after the initial surgery, the patient was discharged from our hospital. The tumor has not recurred, and he is under outpatient observation in the urology department. CONCLUSION Fournier's gangrene should be considered in patients who are in a severe myelosuppressive state due to chemotherapy, have normal hepatitis B virus DNA levels but high hepatitis B surface antigen after tenofovir administration, complain of severe pain in the perianal area, and have a dark purple skin discoloration around the anus, despite having no initial anorectal lesions.
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Affiliation(s)
- Kenichi Nonaka
- Department of Digestive Surgery, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Kota Kawase
- Department of Urology, Daiyukai Daiichi Hospital, Ichinomiya, Aichi, Japan
| | - Kimiaki Takagi
- Department of Urology, Daiyukai Daiichi Hospital, Ichinomiya, Aichi, Japan
| | - Yuta Takatsu
- Department of Digestive Surgery, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Koji Maniwa
- Department of Surgery, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Chika Takao
- Department of Digestive Surgery, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Minoru Komura
- Department of Surgery, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Yoshinori Mushika
- Department of Surgery, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Noriyuki Takeuchi
- Department of Surgery, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Toshio Kato
- Department of Pathology, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Mitsuhiko Kusakabe
- Department of Surgery, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
| | - Mitsutaka Kondo
- Department of Surgery, Daiyukai General Hospital, Ichinomiya, Aichi, Japan
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Han X, Huang Y, Hao J. Avian Coronavirus Infectious Bronchitis Virus Activates Mitochondria-Mediated Apoptosis Pathway and Affects Viral Replication by Inducing Reactive Oxygen Species Production in Chicken HD11 Cells. BIOLOGY 2024; 13:491. [PMID: 39056685 PMCID: PMC11273894 DOI: 10.3390/biology13070491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/20/2024] [Accepted: 06/30/2024] [Indexed: 07/28/2024]
Abstract
Infectious bronchitis virus (IBV), a coronavirus that causes severe respiratory and gastrointestinal illness in poultry, leads to substantial economic losses. According to earlier research, IBV infection causes chicken macrophage HD11 cells to undergo cell apoptosis. Reactive oxygen species (ROS) and the IBV-activated intrinsic apoptotic signaling pathway were examined in this work. The findings demonstrate that IBV infection causes ROS to accumulate. Moreover, IBV infection decreased the mitochondrial transmembrane potential in HD11 cells, which could be blocked by ROS antioxidants (PDTC and NAC). The two antioxidants significantly affected the expression of Bcl-2 and Bax and further inhibited the activation of caspase-3 and apoptosis in HD11 cells. Additionally, IBV replication was decreased by blocking ROS accumulation. Pretreating HD11 cells with ammonium chloride (NH4Cl) prevented IBV from entering the cells and reduced the oxidative stress which IBV causes. The ability to accumulate ROS was also lost in UV-inactivated IBV. The IBV N protein induces cell apoptosis through the activation of ROS. These findings provide an explanation for the processes of IBV infection in immune cells by indicating that IBV-induced ROS generation triggers cell apoptosis in HD11 cells.
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Affiliation(s)
- Xiaoxiao Han
- School of Bioscience and Technology, Chengdu Medical College, Chengdu 610500, China; (Y.H.); (J.H.)
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Quiroga J, Cortes B, Sarmiento J, Morán G, Henríquez C. Characterization of extracellular trap production and release by equine neutrophils in response to different stimuli. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 155:105151. [PMID: 38423491 DOI: 10.1016/j.dci.2024.105151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 01/31/2024] [Accepted: 02/19/2024] [Indexed: 03/02/2024]
Abstract
This study explores Neutrophil Extracellular Trap (NET) formation in equine neutrophils, which is crucial for eliminating infections and is implicated in various equine inflammatory diseases. We investigated the molecular pathways involved in NET release by equine neutrophils in response to stimuli. We use PMA, A23187, LPS, PAF, OZ, and cytokines, observing NET release in response to PMA, PAF, and A23187. In contrast, LPS, OZ, and the cytokines tested did not induce DNA release or did not consistently induce citrullination of histone 4. Peptidyl-arginine deiminase inhibition completely halted NET release, while NADPH oxidase and mitochondrial reactive oxygen species only played a role in PMA-induced NETs. Neutrophil elastase inhibition modestly affected PAF-induced NET liberation but not in PMA or A23187-induced NET, while myeloperoxidase did not contribute to NET release. We expect to provide a foundation for future investigations into the role of NETs in equine health and disease and the search for potential therapeutic targets.
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Affiliation(s)
- John Quiroga
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - Bayron Cortes
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - José Sarmiento
- Instituto de Fisiología, Facultad de Medicina, Universidad Austral de Chile, Chile
| | - Gabriel Morán
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - Claudio Henríquez
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile.
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Dutta S, Ganguly A, Ghosh Roy S. An Overview of the Unfolded Protein Response (UPR) and Autophagy Pathways in Human Viral Oncogenesis. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2024; 386:81-131. [PMID: 38782502 DOI: 10.1016/bs.ircmb.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Autophagy and Unfolded Protein Response (UPR) can be regarded as the safe keepers of cells exposed to intense stress. Autophagy maintains cellular homeostasis, ensuring the removal of foreign particles and misfolded macromolecules from the cytoplasm and facilitating the return of the building blocks into the system. On the other hand, UPR serves as a shock response to prolonged stress, especially Endoplasmic Reticulum Stress (ERS), which also includes the accumulation of misfolded proteins in the ER. Since one of the many effects of viral infection on the host cell machinery is the hijacking of the host translational system, which leaves in its wake a plethora of misfolded proteins in the ER, it is perhaps not surprising that UPR and autophagy are common occurrences in infected cells, tissues, and patient samples. In this book chapter, we try to emphasize how UPR, and autophagy are significant in infections caused by six major oncolytic viruses-Epstein-Barr (EBV), Human Papilloma Virus (HPV), Human Immunodeficiency Virus (HIV), Human Herpesvirus-8 (HHV-8), Human T-cell Lymphotropic Virus (HTLV-1), and Hepatitis B Virus (HBV). Here, we document how whole-virus infection or overexpression of individual viral proteins in vitro and in vivo models can regulate the different branches of UPR and the various stages of macro autophagy. As is true with other viral infections, the relationship is complicated because the same virus (or the viral protein) exerts different effects on UPR and Autophagy. The nature of this response is determined by the cell types, or in some cases, the presence of diverse extracellular stimuli. The vice versa is equally valid, i.e., UPR and autophagy exhibit both anti-tumor and pro-tumor properties based on the cell type and other factors like concentrations of different metabolites. Thus, we have tried to coherently summarize the existing knowledge, the crux of which can hopefully be harnessed to design vaccines and therapies targeted at viral carcinogenesis.
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Affiliation(s)
- Shovan Dutta
- Center for Immunotherapy & Precision Immuno-Oncology (CITI), Lerner Research Institute, Cleveland Clinic, Cleveland, OH, United States
| | - Anirban Ganguly
- Department of Biochemistry, All India Institute of Medical Sciences, Deoghar, Jharkhand, India
| | - Sounak Ghosh Roy
- Henry M Jackson for the Advancement of Military Medicine, Naval Medical Research Command, Silver Spring, MD, United States.
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7
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Tu H, Ren H, Jiang J, Shao C, Shi Y, Li P. Dying to Defend: Neutrophil Death Pathways and their Implications in Immunity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306457. [PMID: 38044275 PMCID: PMC10885667 DOI: 10.1002/advs.202306457] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/06/2023] [Indexed: 12/05/2023]
Abstract
Neutrophils, accounting for ≈70% of human peripheral leukocytes, are key cells countering bacterial and fungal infections. Neutrophil homeostasis involves a balance between cell maturation, migration, aging, and eventual death. Neutrophils undergo different death pathways depending on their interactions with microbes and external environmental cues. Neutrophil death has significant physiological implications and leads to distinct immunological outcomes. This review discusses the multifarious neutrophil death pathways, including apoptosis, NETosis, pyroptosis, necroptosis, and ferroptosis, and outlines their effects on immune responses and disease progression. Understanding the multifaceted aspects of neutrophil death, the intersections among signaling pathways and ramifications of immunity will help facilitate the development of novel therapeutic methods.
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Affiliation(s)
- Haiyue Tu
- The First Affiliated Hospital of Soochow UniversityState Key Laboratory of Radiation Medicine and ProtectionInstitutes for Translational MedicineSuzhou Medical College of Soochow UniversitySuzhouJiangsu215123China
| | - Haoyu Ren
- The First Affiliated Hospital of Soochow UniversityState Key Laboratory of Radiation Medicine and ProtectionInstitutes for Translational MedicineSuzhou Medical College of Soochow UniversitySuzhouJiangsu215123China
| | - Junjie Jiang
- The First Affiliated Hospital of Soochow UniversityState Key Laboratory of Radiation Medicine and ProtectionInstitutes for Translational MedicineSuzhou Medical College of Soochow UniversitySuzhouJiangsu215123China
| | - Changshun Shao
- The First Affiliated Hospital of Soochow UniversityState Key Laboratory of Radiation Medicine and ProtectionInstitutes for Translational MedicineSuzhou Medical College of Soochow UniversitySuzhouJiangsu215123China
| | - Yufang Shi
- The First Affiliated Hospital of Soochow UniversityState Key Laboratory of Radiation Medicine and ProtectionInstitutes for Translational MedicineSuzhou Medical College of Soochow UniversitySuzhouJiangsu215123China
| | - Peishan Li
- The First Affiliated Hospital of Soochow UniversityState Key Laboratory of Radiation Medicine and ProtectionInstitutes for Translational MedicineSuzhou Medical College of Soochow UniversitySuzhouJiangsu215123China
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8
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Li M, Weng L, Yu D, Yang G, Hao J. Increased formation of neutrophil extracellular traps induced by autophagy and identification of autophagy-related biomarkers in systemic lupus erythematosus. Exp Dermatol 2024; 33:e14881. [PMID: 37539924 DOI: 10.1111/exd.14881] [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: 03/30/2023] [Revised: 06/10/2023] [Accepted: 06/13/2023] [Indexed: 08/05/2023]
Abstract
Abnormal death of neutrophils and the subsequent ineffective clearance of cell fragments result in production of autoantigens that can lead to systemic lupus erythematosus (SLE). Excessive formation of neutrophil extracellular traps (NETs) can trigger the synthesis of pro-inflammatory cytokines such as type I interferons, leading to tissue damage and immune dysfunction in SLE patients. In this study, we found that a decrease in neutrophil counts in the peripheral blood was correlated with clinical parameters in SLE patients. Patients with low neutrophil counts had high renal activity index and chronicity index scores. NET formation and neutrophil autophagy in SLE patients were increased. The autophagy inhibitor hydroxychloroquine was shown to restrict NET formation. Using comprehensive bioinformatics analysis, we found that the expression of the autophagy-related gene, hypoxia-inducible factor 1A (HIF1A), was enhanced in peripheral neutrophils and in the renal glomeruli in SLE patients. Targeting HIF1A could be a potential therapeutic approach for SLE.
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Affiliation(s)
- Mingfang Li
- Department of Dermatology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Department of Dermatology, Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Luobei Weng
- Department of Dermatology, The First Affiliated Hospital of Jinan University, Guangzhou, China
- Institute of Mycology, Jinan University, Guangzhou, China
| | - Datang Yu
- Department of urology, The 74th Group Army Hospital of the PLA, Guangzhou, China
| | - Guofei Yang
- Department of Dermatology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jin Hao
- Department of Dermatology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Conceição-Neto N, Pierson W, Vacca M, Beyens M, De Clerck B, Aerts L, Voeten B, De Pooter D, Verschueren L, Dockx K, Vandenberk M, De Troyer E, Verwilt K, Van Hove C, Verslegers M, Bosseler L, Crabbe M, Krishna V, Nájera I, Van Gulck E. Sustained Liver HBsAg Loss and Clonal T- and B-Cell Expansion upon Therapeutic DNA Vaccination Require Low HBsAg Levels. Vaccines (Basel) 2023; 11:1825. [PMID: 38140229 PMCID: PMC10747285 DOI: 10.3390/vaccines11121825] [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: 10/29/2023] [Revised: 11/27/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
BACKGROUND Suppression of HBV DNA, inhibition of HBV surface (HBsAg) production and therapeutic vaccination to reverse HBV-specific T-cell exhaustion in chronic HBV patients are likely required to achieve a functional cure. In the AAV-HBV mouse model, therapeutic vaccination can be effective in clearing HBV when HBsAg levels are low. Using a single-cell approach, we investigated the liver immune environment with different levels of HBsAg and sustained HBsAg loss through treatment with a GalNAc-HBV-siRNA followed by therapeutic vaccination. METHODS AAV-HBV-transduced C57BL/6 mice were treated with GalNAc-HBV-siRNA to lower HBsAg levels and then vaccinated using a DNA vaccine. We used single-cell RNA and V(D)J sequencing to understand liver immune microenvironment changes. RESULTS GalNAc-HBV-siRNA, followed by therapeutic vaccination, achieved sustained HBsAg loss in all mice. This was accompanied by CD4 follicular helper T-cell induction, polyclonal activation of CD8 T cells and clonal expansion of plasma cells that were responsible for antibody production. CONCLUSIONS This study provides novel insights into liver immune changes at the single-cell level, highlighting the correlation between induced reduction of HBsAg levels and clonal expansion of CD4, CD8 T cells and plasma cells in the liver upon HBV siRNA and subsequent therapeutic vaccination.
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Affiliation(s)
- Nádia Conceição-Neto
- Infectious Diseases Discovery, Infectious Diseases and Vaccines, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (N.C.-N.); (M.V.); (B.D.C.); (L.A.); (D.D.P.); (L.V.)
| | - Wim Pierson
- Infectious Diseases Discovery, Infectious Diseases and Vaccines, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (N.C.-N.); (M.V.); (B.D.C.); (L.A.); (D.D.P.); (L.V.)
| | - Maurizio Vacca
- Infectious Diseases Discovery, Infectious Diseases and Vaccines, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (N.C.-N.); (M.V.); (B.D.C.); (L.A.); (D.D.P.); (L.V.)
| | - Matthias Beyens
- Discovery Therapeutics and Molecular Pharmacology, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (M.B.); (K.V.); (C.V.H.)
| | - Ben De Clerck
- Infectious Diseases Discovery, Infectious Diseases and Vaccines, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (N.C.-N.); (M.V.); (B.D.C.); (L.A.); (D.D.P.); (L.V.)
| | - Liese Aerts
- Infectious Diseases Discovery, Infectious Diseases and Vaccines, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (N.C.-N.); (M.V.); (B.D.C.); (L.A.); (D.D.P.); (L.V.)
| | - Birgit Voeten
- Charles River Laboratories, Turnhoutseweg 30, 2340 Beerse, Belgium (K.D.); (M.V.)
| | - Dorien De Pooter
- Infectious Diseases Discovery, Infectious Diseases and Vaccines, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (N.C.-N.); (M.V.); (B.D.C.); (L.A.); (D.D.P.); (L.V.)
| | - Lore Verschueren
- Infectious Diseases Discovery, Infectious Diseases and Vaccines, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (N.C.-N.); (M.V.); (B.D.C.); (L.A.); (D.D.P.); (L.V.)
| | - Koen Dockx
- Charles River Laboratories, Turnhoutseweg 30, 2340 Beerse, Belgium (K.D.); (M.V.)
| | - Mathias Vandenberk
- Charles River Laboratories, Turnhoutseweg 30, 2340 Beerse, Belgium (K.D.); (M.V.)
| | - Ewoud De Troyer
- SDS Discovery Statistics, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (E.D.T.); (M.C.)
| | - Kato Verwilt
- Discovery Therapeutics and Molecular Pharmacology, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (M.B.); (K.V.); (C.V.H.)
| | - Carl Van Hove
- Discovery Therapeutics and Molecular Pharmacology, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (M.B.); (K.V.); (C.V.H.)
| | - Mieke Verslegers
- Preclinical Sciences and Translational Safety (PSTS) Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (M.V.); (L.B.)
| | - Leslie Bosseler
- Preclinical Sciences and Translational Safety (PSTS) Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (M.V.); (L.B.)
| | - Marjolein Crabbe
- SDS Discovery Statistics, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (E.D.T.); (M.C.)
| | - Vinod Krishna
- Infectious Diseases Discovery, Infectious Diseases and Vaccines, Janssen Research and Development, 1400 McKean Road, Spring House, PA 19002, USA;
| | - Isabel Nájera
- Infectious Diseases and Vaccines, Janssen Research and Development, 1600 Sierra Point Parkway, South San Francisco, CA 94005, USA;
| | - Ellen Van Gulck
- Infectious Diseases Discovery, Infectious Diseases and Vaccines, Janssen Research and Development, Turnhoutseweg 30, 2340 Beerse, Belgium; (N.C.-N.); (M.V.); (B.D.C.); (L.A.); (D.D.P.); (L.V.)
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10
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Yu W, Wang Z, Dai P, Sun J, Li J, Han W, Li K. The activation of SIRT1 by resveratrol reduces breast cancer metastasis to lung through inhibiting neutrophil extracellular traps. J Drug Target 2023; 31:962-975. [PMID: 37772906 DOI: 10.1080/1061186x.2023.2265585] [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: 02/15/2023] [Accepted: 09/20/2023] [Indexed: 09/30/2023]
Abstract
Neutrophil extracellular traps (NETs) play a crucial role in breast cancer metastasis. However, the therapeutic target of NETs in breast cancer metastasis is still unknown. Using a natural metabolite library and single-cell sequencing data analysis, we identified resveratrol (RES), a polyphenolic natural phytoalexin, and agonist of silent information regulator-1 (SIRT1) that suppressed NETs formation after cathepsin C (CTSC) treatment. In vivo, RES significantly hindered breast cancer metastasis in a murine orthotopic 4T1 breast cancer model. Serum levels of myeloperoxidase-DNA and neutrophil elastase-DNA in mouse breast cancer model were significantly lower after RES treatment. Correspondingly, the tumour infiltrated CD8+T cells in the lungs increased after the treatment. Mechanistically, RES targets SIRT1 in neutrophils and significantly inhibits the citrullination of histones H3, which is essential for chromatin decondensation and NETs formation. Furthermore, we identified that the NETs were suppressed by RES in bone marrow neutrophils after CTSC treatment, while specific deficiency of SIRT1 in neutrophils promoted NETs formation and breast cancer to lung metastasis. Thus, our results revealed that RES could be potentially identified as a viable therapeutic drug to prevent neutrophil cell death and breast cancer metastasis.
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Affiliation(s)
- Wenyan Yu
- Department of Oncology, Shanghai Fourth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhuning Wang
- Department of Oncology, Shanghai Fourth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ping Dai
- Department of Oncology, Shanghai Fourth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jing Sun
- Department of Oncology, Shanghai Fourth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jian Li
- Department of Oncology, Shanghai Fourth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wei Han
- Department of Oncology, Shanghai Fourth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Kaichun Li
- Department of Oncology, Shanghai Fourth People's Hospital, Tongji University School of Medicine, Shanghai, China
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11
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Wang Y, Shi C, Guo J, Zhang Y, Gong Z. Distinct Types of Cell Death and Implications in Liver Diseases: An Overview of Mechanisms and Application. J Clin Transl Hepatol 2023; 11:1413-1424. [PMID: 37719956 PMCID: PMC10500292 DOI: 10.14218/jcth.2023.00132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 05/17/2023] [Accepted: 07/12/2023] [Indexed: 09/19/2023] Open
Abstract
Cell death is associated with a variety of liver diseases, and hepatocyte death is a core factor in the occurrence and progression of liver diseases. In recent years, new cell death modes have been identified, and certain biomarkers have been detected in the circulation during various cell death modes that mediate liver injury. In this review, cell death modes associated with liver diseases are summarized, including some cell death modes that have emerged in recent years. We described the mechanisms associated with liver diseases and summarized recent applications of targeting cell death in liver diseases. It provides new ideas for the diagnosis and treatment of liver diseases. In addition, multiple cell death modes can contribute to the same liver disease. Different cell death modes are not isolated, and they interact with each other in liver diseases. Future studies may focus on exploring the regulation between various cell death response pathways in liver diseases.
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Affiliation(s)
- Yukun Wang
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Chunxia Shi
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jin Guo
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Yanqiong Zhang
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Zuojiong Gong
- Department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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12
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Nyarko ENY, Obirikorang C, Owiredu WKBA, Adu EA, Acheampong E. Assessment of the performance of haematological and non-invasive fibrotic indices for the monitoring of chronic HBV infection: a pilot study in a Ghanaian population. BMC Res Notes 2023; 16:312. [PMID: 37925465 PMCID: PMC10625242 DOI: 10.1186/s13104-023-06581-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 10/18/2023] [Indexed: 11/06/2023] Open
Abstract
OBJECTIVE Haematological and liver fibrotic markers could be appreciably utilized for effective monitoring of Chronic Hepatitis B viral (HBV) infection, thereby increasing patient's treatment outcome. The objective of this study was to assess the applicability of complete blood count (CBC) and non-invasive liver-fibrotic indices as markers of prognostic outcome and monitoring in HBV infections. RESULTS Significant differences in levels of white cell and differentials counts, red blood cell count, hemoglobin indices, and platelet indices were observed between HBV-infected patients (cases) and uninfected persons (controls). Levels of haemoglobin (Hb), total white blood cells (tWBC), neutrophils, monocytes, platelets, and Platelet Distribution width (PDW) were significantly lower (p < 0.05) in the cases compared to the controls. Total and indirect bilirubin; De-Ritis ratio, Aspartate transaminase to platelet ratio index (APRI) and RDW-to-platelet ratio (RPR) were elevated in cases compared with controls (p-value < 0.05). In a multivariate adjusted model to test the significance of markers, Hemoglobin Index (beta coefficient = - 0.876, p-value < 0.001), NLR (beta coefficient = - 0.839, p-value < 0.001), MPV_10000 (beta coefficient = - 0.333, p-value < 0.001) and Albumin (beta coefficient = - 0.059, p-value = 0.014), were associated with HBV infection status. Receiver operative characteristics curve analysis showed Hemoglobin Index (AUC = 0.744) and MPV_10000 (AUC = 0.730) as better prognostic markers for HBV-infection.
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Affiliation(s)
- Eric N Y Nyarko
- Department of Chemical Pathology, University of Ghana Medical School, University of Ghana, Accra, Ghana.
| | - Christian Obirikorang
- Department of Molecular Medicine, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Global Health and Infectious Diseases Group, Kumasi Centre for Collaborative Research, Kumasi, Ghana
| | - W K B A Owiredu
- Department of Molecular Medicine, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Evans Asamoah Adu
- Department of Molecular Medicine, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- Global Health and Infectious Diseases Group, Kumasi Centre for Collaborative Research, Kumasi, Ghana
| | - Emmanuel Acheampong
- Department of Molecular Medicine, School of Medicine and Dentistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
- School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
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13
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Wang J, Tang B, You X, Cai X, Jia W, Liu X, Liu M, Jin X, Ding J. Trichinella spiralis excretory/secretory products from adult worms inhibit NETosis and regulate the production of cytokines from neutrophils. Parasit Vectors 2023; 16:374. [PMID: 37864246 PMCID: PMC10588246 DOI: 10.1186/s13071-023-05979-8] [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: 05/30/2023] [Accepted: 09/23/2023] [Indexed: 10/22/2023] Open
Abstract
Upon encountering exogenous pathogens, polymorphonucleocytes (PMNs) engage in various processes to destroy them, including releasing neutrophil extracellular traps (NETs) that trap pathogens and induce phagocytosis and cytokine production. Parasites have unique strategies with which to evade the host's immune response. However, the strategy employed by Trichinella spiralis in response to the reaction of PMNs has yet to be elucidated. This study explored the effect of excretory/secretory products (ESP) on three major functions: NETs, phagocytosis, and cytokine production. Specifically, PMNs were pre-treated with the ESP of 3-day-old adults and then stimulated with phorbol 12-myristate 13-acetate (PMA). We found that in PMNs pretreated with ESP, PMA-induced NET generation was suppressed by ESP. ROS production is a hallmark of PMA-induced NETosis. The LDH assay results showed that ESP inhibits NETs by suppressing ROS rather than promoting PMN death. Furthermore, ESP enhanced Escherichia coli engulfment by PMNs, improving overall phagocytic function. Finally, cytokine analysis revealed an increase in pro-inflammatory cytokine IL-1β, and other cytokines (IL-10, TNF-α), while IL-4 displayed a significant reduction. In conclusion, this study has unraveled T. spiralis' evasion and regulation mechanisms against innate immune cells, providing insights into parasite strategies to manipulate host immunity, potentially informing new treatments for NET-related autoimmune diseases.
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Affiliation(s)
- Jing Wang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Bin Tang
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xihuo You
- Beijing Agrichina Pharmaceutical Co., Ltd., Wangzhuang Industrial Park, Airport Road, Shahe, Changping District, Beijing, 102200, China
| | - Xuepeng Cai
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Wanzhong Jia
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Xiaolei Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Mingyuan Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China
| | - Xuemin Jin
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
| | - Jing Ding
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun, 130062, China.
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14
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Hovhannisyan G, Harutyunyan T, Aroutiounian R, Liehr T. The Diagnostic, Prognostic, and Therapeutic Potential of Cell-Free DNA with a Special Focus on COVID-19 and Other Viral Infections. Int J Mol Sci 2023; 24:14163. [PMID: 37762464 PMCID: PMC10532175 DOI: 10.3390/ijms241814163] [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: 08/02/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Cell-free DNA (cfDNA) in human blood serum, urine, and other body fluids recently became a commonly used diagnostic marker associated with various pathologies. This is because cfDNA enables a much higher sensitivity than standard biochemical parameters. The presence of and/or increased level of cfDNA has been reported for various diseases, including viral infections, including COVID-19. Here, we review cfDNA in general, how it has been identified, where it can derive from, its molecular features, and mechanisms of release and clearance. General suitability of cfDNA for diagnostic questions, possible shortcomings and future directions are discussed, with a special focus on coronavirus infection.
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Affiliation(s)
- Galina Hovhannisyan
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (G.H.); (T.H.); (R.A.)
| | - Tigran Harutyunyan
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (G.H.); (T.H.); (R.A.)
| | - Rouben Aroutiounian
- Department of Genetics and Cytology, Yerevan State University, Alex Manoogian 1, Yerevan 0025, Armenia; (G.H.); (T.H.); (R.A.)
| | - Thomas Liehr
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, Am Klinikum 1, 07747 Jena, Germany
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15
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de Siqueira Santos R, Rochael NC, Mattos TRF, Fallett E Silva MF, Linhares-Lacerda L, de Oliveira LT, Cunha MS, Mohana-Borges R, Gomes TA, Barbosa-Silva MC, Maron-Gutierrez T, Foguel D, Saraiva EM. Peripheral nervous system is injured by neutrophil extracellular traps (NETs) elicited by nonstructural (NS) protein-1 from Zika virus. FASEB J 2023; 37:e23126. [PMID: 37594040 DOI: 10.1096/fj.202201904r] [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: 11/15/2022] [Revised: 07/05/2023] [Accepted: 07/25/2023] [Indexed: 08/19/2023]
Abstract
The involvement of innate immune mediators to the Zika virus (ZIKV)-induced neuroinflammation is not yet well known. Here, we investigated whether neutrophil extracellular traps (NETs), which are scaffolds of DNA associated with proteins, have the potential to injure peripheral nervous. The tissue lesions were evaluated after adding NETs to dorsal root ganglia (DRG) explants and to DRG constituent cells or injecting them into mouse sciatic nerves. Identification of NET harmful components was achieved by pharmacological inhibition of NET constituents. We found that ZIKV inoculation into sciatic nerves recruited neutrophils and elicited the production of the cytokines CXCL1 and IL-1β, classical NET inducers, but did not trigger NET formation. ZIKV blocked PMA- and CXCL8-induced NET release, but, in contrast, the ZIKV nonstructural protein (NS)-1 induced NET formation. NET-enriched supernatants were toxic to DRG explants, decreasing neurite area, length, and arborization. NETs were toxic to DRG constituent cells and affected myelinating cells. Myeloperoxidase (MPO) and histones were identified as the harmful component of NETs. NS1 injection into mouse sciatic nerves recruited neutrophils and triggered NET release and caspase-3 activation, events that were also elicited by the injection of purified MPO. In summary, we found that ZIKV NS1 protein induces NET formation, which causes nervous tissue damages. Our findings reveal new mechanisms leading to neuroinflammation by ZIKV.
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Affiliation(s)
- Raphael de Siqueira Santos
- Laboratório de Agregação de Proteínas e Amiloidoses, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Natalia Cadaxo Rochael
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Thayana Roberta F Mattos
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Matheus Felipe Fallett E Silva
- Laboratório de Agregação de Proteínas e Amiloidoses, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Leandra Linhares-Lacerda
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Leandro Teixeira de Oliveira
- Laboratório de Agregação de Proteínas e Amiloidoses, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Marcela Sabino Cunha
- Laboratório de Genética e Imunologia das Infecções Virais, Departamento de Virologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Ronaldo Mohana-Borges
- Laboratório de Biotecnologia e Bioengenharia Estrutural, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Tiago Araujo Gomes
- Laboratório de Microbiologia Celular Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Maria Carolina Barbosa-Silva
- Laboratório de Imunofarmacologia - Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Tatiana Maron-Gutierrez
- Laboratório de Imunofarmacologia - Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, Brazil
| | - Debora Foguel
- Laboratório de Agregação de Proteínas e Amiloidoses, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Elvira Maria Saraiva
- Laboratório de Imunidade Inata, Departamento de Imunologia, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
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16
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Zheng P, Dou Y, Wang Q. Immune response and treatment targets of chronic hepatitis B virus infection: innate and adaptive immunity. Front Cell Infect Microbiol 2023; 13:1206720. [PMID: 37424786 PMCID: PMC10324618 DOI: 10.3389/fcimb.2023.1206720] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 06/06/2023] [Indexed: 07/11/2023] Open
Abstract
Chronic hepatitis B virus (HBV) infection is a major global public health risk that threatens human life and health, although the number of vaccinated people has increased. The clinical outcome of HBV infection depends on the complex interplay between viral replication and the host immune response. Innate immunity plays an important role in the early stages of the disease but retains no long-term immune memory. However, HBV evades detection by the host innate immune system through stealth. Therefore, adaptive immunity involving T and B cells is crucial for controlling and clearing HBV infections that lead to liver inflammation and damage. The persistence of HBV leads to immune tolerance owing to immune cell dysfunction, T cell exhaustion, and an increase in suppressor cells and cytokines. Although significant progress has been made in HBV treatment in recent years, the balance between immune tolerance, immune activation, inflammation, and fibrosis in chronic hepatitis B remains unknown, making a functional cure difficult to achieve. Therefore, this review focuses on the important cells involved in the innate and adaptive immunity of chronic hepatitis B that target the host immune system and identifies treatment strategies.
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Affiliation(s)
- Peiyu Zheng
- Department of Infectious Diseases, The First Hospital of Shanxi Medical University, Taiyuan, China
- Graduate School of Shanxi Medical University, Taiyuan, China
| | - Yongqing Dou
- Department of Infectious Diseases, The First Hospital of Shanxi Medical University, Taiyuan, China
| | - Qinying Wang
- Department of Infectious Diseases, The First Hospital of Shanxi Medical University, Taiyuan, China
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17
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Adugna A. Antigen Recognition and Immune Response to Acute and Chronic Hepatitis B Virus Infection. J Inflamm Res 2023; 16:2159-2166. [PMID: 37223107 PMCID: PMC10202203 DOI: 10.2147/jir.s411492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/02/2023] [Indexed: 05/25/2023] Open
Abstract
The antigen recognition and immune response to acute and chronic hepatitis B virus (HBV) infections are the result of both the innate and adaptive immune response. The innate immune response comprises Dendritic Cells (DCs), which served as professional antigen-presenting cells and a bridge between innate and adaptive immunity, Kupffer cells and inflammatory monocytes for the continuous inflammation of hepatocyte, neutrophils for hepatic tissue damage due to acute inflammation, type I interferons (IFN), which induce an antiviral state on infected cells, directs natural killer (NK) cells to kill virally infected cells, reduces the population of infected cells, and promotes the effective maturation and site recruitment of adaptive immunity through the production of pro-inflammatory cytokines and chemokines. Through stimulating B cells, T-helper, and cytotoxic T cells, the adaptive immune system also protects against hepatitis B infection. During HBV infection, a network of cell types that can either play protective or harmful functions creates the anti-viral adaptive immune response. These many elements, such as Cluster of differentiation four (CD4) T cells (traditionally known as helper T cells), are potent cytokine producers and necessary for the effective maturation of effector cytotoxic cluster of differentiation eight (CD8) T cells and B cell antibody production. By cytolytic and non-cytolytic processes, CD8 T cells are able to eliminate HBV-infected hepatocytes and directly detect virus-infected cells, and circulating CD4+ CD25+ regulatory T cells for the modulation of immune system. In order to avoid reinfection, B cells can produce antibodies that destroy free viral particles. Moreover, by presenting HBV antigens to helper T cells, B cells may also influence how well these cells operate.
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Affiliation(s)
- Adane Adugna
- Medical Microbiology, Medical Laboratory Sciences, College of Health Sciences, Debre Markos University, Debre Markos, Ethiopia
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18
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Quiroga J, Alarcón P, Ramírez MF, Manosalva C, Teuber S, Carretta MD, Burgos RA. d-lactate-induced ETosis in cattle polymorphonuclear leucocytes is dependent on the release of mitochondrial reactive oxygen species and the PI3K/Akt/HIF-1 and GSK-3β pathways. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 145:104728. [PMID: 37164278 DOI: 10.1016/j.dci.2023.104728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 05/05/2023] [Accepted: 05/06/2023] [Indexed: 05/12/2023]
Abstract
d-lactate is a metabolite originating from bacterial metabolism that accumulates as a result of dietary disturbances in cattle, leading to ruminal acidosis. d-lactate exerts functions as a metabolic signal inducing metabolic reprogramming and extracellular trap (ET) release in polymorphonuclear leucocytes (PMNs). We previously demonstrated that d-lactate induces metabolic reprogramming via hypoxia-induced factor 1 alpha (HIF-1α) stabilization in bovine fibroblast-like synoviocytes (FLSs). In the present study, the role of HIF-1 in ET formation induced by d-lactate was assessed. HIF-1α stabilization in PMNs was controlled by mitochondrial reactive oxygen species (mtROS) release. Furthermore, inhibition of mitochondrial complex I and scavenging of mtROS decreased d-lactate-triggered ETosis. d-lactate-enhanced HIF-1α accumulation was dependent on the PI3K/Akt pathway but independent of GSK-3β activity. Pharmacological blockade of the PI3K/Akt/HIF-1 and GSK-3β axes inhibited d-lactate-triggered ETosis and downregulated PDK1 and LDHA expression. However, only GSK-3β inhibition decreased the expression of glycogen metabolism enzymes and prevented the decline in glycogen stores induced by d-lactate exposure. The results of this study suggest that mtROS, PI3K/Akt/HIF-1 and GSK-3β axes regulate carbohydrate metabolism adaptations that support d-lactate-induced ET formation in cattle.
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Affiliation(s)
- John Quiroga
- Laboratory of Inflammation Pharmacology and Immunometabolism, Institute of Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Pablo Alarcón
- Laboratory of Inflammation Pharmacology and Immunometabolism, Institute of Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - María Fernanda Ramírez
- Laboratory of Inflammation Pharmacology and Immunometabolism, Institute of Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Carolina Manosalva
- Institute of Pharmacy, Faculty of Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Stefanie Teuber
- Laboratory of Inflammation Pharmacology and Immunometabolism, Institute of Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - María Daniella Carretta
- Laboratory of Inflammation Pharmacology and Immunometabolism, Institute of Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile
| | - Rafael Agustín Burgos
- Laboratory of Inflammation Pharmacology and Immunometabolism, Institute of Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Valdivia, Chile.
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19
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Oxidized mitochondrial DNA induces gasdermin D oligomerization in systemic lupus erythematosus. Nat Commun 2023; 14:872. [PMID: 36797275 PMCID: PMC9935630 DOI: 10.1038/s41467-023-36522-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 02/01/2023] [Indexed: 02/18/2023] Open
Abstract
Although extracellular DNA is known to form immune complexes (ICs) with autoantibodies in systemic lupus erythematosus (SLE), the mechanisms leading to the release of DNA from cells remain poorly characterized. Here, we show that the pore-forming protein, gasdermin D (GSDMD), is required for nuclear DNA and mitochondrial DNA (mtDNA) release from neutrophils and lytic cell death following ex vivo stimulation with serum from patients with SLE and IFN-γ. Mechanistically, the activation of FcγR downregulated Serpinb1 following ex vivo stimulation with serum from patients with SLE, leading to spontaneous activation of both caspase-1/caspase-11 and cleavage of GSDMD into GSDMD-N. Furthermore, mtDNA oxidization promoted GSDMD-N oligomerization and cell death. In addition, GSDMD, but not peptidyl arginine deiminase 4 is necessary for extracellular mtDNA release from low-density granulocytes from SLE patients or healthy human neutrophils following incubation with ICs. Using the pristane-induced lupus model, we show that disease severity is significantly reduced in mice with neutrophil-specific Gsdmd deficiency or following treatment with the GSDMD inhibitor, disulfiram. Altogether, our study highlights an important role for oxidized mtDNA in inducing GSDMD oligomerization and pore formation. These findings also suggest that GSDMD might represent a possible therapeutic target in SLE.
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20
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Song YH, Wang ZJ, Kang L, He ZX, Zhao SB, Fang X, Li ZS, Wang SL, Bai Y. PADs and NETs in digestive system: From physiology to pathology. Front Immunol 2023; 14:1077041. [PMID: 36761761 PMCID: PMC9902375 DOI: 10.3389/fimmu.2023.1077041] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 01/09/2023] [Indexed: 01/26/2023] Open
Abstract
Peptidylarginine deiminases (PADs) are the only enzyme class known to deiminate arginine residues into citrulline in proteins, a process known as citrullination. This is an important post-translational modification that functions in several physiological and pathological processes. Neutrophil extracellular traps (NETs) are generated by NETosis, a novel cell death in neutrophils and a double-edged sword in inflammation. Excessive activation of PADs and NETs is critically implicated in their transformation from a physiological to a pathological state. Herein, we review the physiological and pathological functions of PADs and NETs, in particular, the involvement of PAD2 and PAD4 in the digestive system, from inflammatory to oncological diseases, along with related therapeutic prospects.
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Affiliation(s)
- Yi-Hang Song
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Zhi-Jie Wang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Le Kang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Zi-Xuan He
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Sheng-Bing Zhao
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Xue Fang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Zhao-Shen Li
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Shu-Ling Wang
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yu Bai
- Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China
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21
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Zhang Y, Song J, Zhang Y, Li T, Peng J, Zhou H, Zong Z. Emerging Role of Neutrophil Extracellular Traps in Gastrointestinal Tumors: A Narrative Review. Int J Mol Sci 2022; 24:ijms24010334. [PMID: 36613779 PMCID: PMC9820455 DOI: 10.3390/ijms24010334] [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: 11/29/2022] [Revised: 12/07/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
Neutrophil extracellular traps (NETs) are extracellular fibrous networks consisting of depolymerized chromatin DNA skeletons with a variety of antimicrobial proteins. They are secreted by activated neutrophils and play key roles in host defense and immune responses. Gastrointestinal (GI) malignancies are globally known for their high mortality and morbidity. Increasing research suggests that NETs contribute to the progression and metastasis of digestive tract tumors, among them gastric, colon, liver, and pancreatic cancers. This article explores the formation of NETs and reviews the role that NETs play in the gastrointestinal oncologic microenvironment, tumor proliferation and metastasis, tumor-related thrombosis, and surgical stress. At the same time, we analyze the qualitative and quantitative detection methods of NETs in recent years and found that NETs are specific markers of coronavirus disease 2019 (COVID-19). Then, we explore the possibility of NET inhibitors for the treatment of digestive tract tumor diseases to provide a new, efficient, and safe solution for the future therapy of gastrointestinal tumors.
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Affiliation(s)
- Yujun Zhang
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, 1 MinDe Road, Nanchang 330006, China
- HuanKui Academy, Nanchang University, Nanchang 330006, China
| | - Jingjing Song
- Nanchang University School of Ophthalmology & Optometry, Jiangxi Medical College, Nanchang University, Nanchang 330006, China
| | - Yiwei Zhang
- Queen Marry College, Nanchang University, Nanchang 330006, China
| | - Ting Li
- The Second Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Jie Peng
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, 1 MinDe Road, Nanchang 330006, China
- The Second Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Haonan Zhou
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, 1 MinDe Road, Nanchang 330006, China
- Queen Marry College, Nanchang University, Nanchang 330006, China
| | - Zhen Zong
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital of Nanchang University, 1 MinDe Road, Nanchang 330006, China
- Correspondence:
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22
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de Jesus Gonzalez-Contreras F, Zarate X. Neutrophil extracellular traps: Modulation mechanisms by pathogens. Cell Immunol 2022; 382:104640. [PMID: 36413806 DOI: 10.1016/j.cellimm.2022.104640] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 11/03/2022] [Accepted: 11/05/2022] [Indexed: 11/11/2022]
Abstract
Neutrophils, as innate effector cells, play an essential role in the containment and elimination of pathogens. Among the main neutrophil mechanisms use for these processes is the release of neutrophil extracellular traps (NETs), which consist of decondensed DNA decorated with various cytoplasmic proteins. NETs' principal role is the trapping and elimination of infectious agents; therefore, the formation of NETs is regulated by bacteria, fungi, parasites, and viruses through different mechanisms: the presence of virulence factors (adhered or secreted), microbial load, size of the microorganism, and even due to other immune cells activation (mainly platelets). This review summarizes the significant aspects that contribute to NETs modulation by pathogens and their components, and the effect NETs have on these pathogens as a cellular defense mechanism.
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Affiliation(s)
| | - Xristo Zarate
- Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon, Av. Universidad s/n, San Nicolas de los Garza 66455, NL, Mexico
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23
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Jin J, Qiao S, Liu J, Li W, Wang F, Gao X, Tian J, Wang N, Zhang J, Dong J, li H, Wang J, Hu S, Zhou P. Neutrophil extracellular traps promote thrombogenicity in cerebral venous sinus thrombosis. Cell Biosci 2022; 12:114. [PMID: 35869501 PMCID: PMC9306243 DOI: 10.1186/s13578-022-00845-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/06/2022] [Indexed: 11/17/2022] Open
Abstract
Background Neutrophil extracellular traps (NETs) contribute to the creation of a coagulation state in various diseases. Currently, it is not clear whether NETs are present in the thrombi and plasma of patients with cerebral venous sinus thrombosis (CVST). This study aimed to investigate the presence of NETs in thrombi and blood samples from CVST patients and the procoagulant activity (PCA) of NETs during the progression of CVST. Results Thrombi obtained from CVST patients undergoing thrombectomy were examined by immunochemistry using neutrophil elastase (NE), CD66b and citrullinated histone H3(citH3). The presence of NET markers in samples from 37 CVST patients and 32 healthy people was evaluated by ELISA. NET-producing neutrophils and neutrophil-platelet (PLT) aggregates were examined in samples obtained from CVST patients and healthy people by flow cytometry. The TAT complex in plasma sample from each group was detected by ELISA to evaluate the procoagulant activity of NETs in CVST patients. Neutrophils from healthy subjects were treated with PLT-rich plasma in the presence of anti-PF4 antibodies or an autophagy inhibitor and analyzed by flow cytometry and confocal microscopy. After treatment with NETs, the expression of von Willebrand factor (VWF), tissue factor (TF) and CD31 in human brain microvascular endothelial cells (HBMECs) was measured by confocal microscopy and western blotting. Our results showed that NETs were abundant in the plasma and thrombi from CVST patients. Platelet factor 4 (PF4) from CVST PLTs induced NET generation through autophagy. NETs could induce PCA by modulating TF and phosphatidylserine (PS) in CVST. NETs also disrupted the endothelial barrier and transformed ECs into a procoagulant phenotype to exacerbate thrombogenicity. Conclusions NET generation was mediated by PF4 from PLTs through autophagy and contribute to thrombosis in CVST patients. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-022-00845-z.
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24
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Yoon JS, Lee CW. Protein phosphatases regulate the liver microenvironment in the development of hepatocellular carcinoma. Exp Mol Med 2022; 54:1799-1813. [PMID: 36380016 PMCID: PMC9722691 DOI: 10.1038/s12276-022-00883-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
The liver is a complicated heterogeneous organ composed of different cells. Parenchymal cells called hepatocytes and various nonparenchymal cells, including immune cells and stromal cells, are distributed in liver lobules with hepatic architecture. They interact with each other to compose the liver microenvironment and determine its characteristics. Although the liver microenvironment maintains liver homeostasis and function under healthy conditions, it also shows proinflammatory and profibrogenic characteristics that can induce the progression of hepatitis and hepatic fibrosis, eventually changing to a protumoral microenvironment that contributes to the development of hepatocellular carcinoma (HCC). According to recent studies, phosphatases are involved in liver diseases and HCC development by regulating protein phosphorylation in intracellular signaling pathways and changing the activities and characteristics of liver cells. Therefore, this review aims to highlight the importance of protein phosphatases in HCC development and in the regulation of the cellular components in the liver microenvironment and to show their significance as therapeutic targets.
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Affiliation(s)
- Joon-Sup Yoon
- grid.264381.a0000 0001 2181 989XDepartment of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419 Republic of Korea
| | - Chang-Woo Lee
- grid.264381.a0000 0001 2181 989XDepartment of Molecular Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Suwon, 16419 Republic of Korea ,grid.264381.a0000 0001 2181 989XDepartment of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, 06351 Republic of Korea
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25
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Yun J, Lee JH. A highly selective and sensitive competitive aptasensor capable of quantifying thrombin elevated with side effects in severe COVID-19. J Pharm Biomed Anal 2022; 221:115076. [PMID: 36179502 PMCID: PMC9511899 DOI: 10.1016/j.jpba.2022.115076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/22/2022] [Accepted: 09/24/2022] [Indexed: 11/23/2022]
Abstract
To protect critical injury from blood clots with side effects in severe COVID-19, a highly selective and sensitive biosensor was developed for the quantification of trace levels of thrombin using the combination of a DNA aptamer (TBA) of thrombin and a complementary strand of TBA. TBA rapidly binds with thrombin, whereas it slowly binds with the complementary strand to form a double stranded DNA (dsDNA). SFC green intercalated into dsDNA cannot emit light in 1,1′-oxalyldiimidazole chemiluminescence (ODI-CL) reaction because high-energy intermediates formed from ODI-CL reaction cannot transfer energy to SFC trapped in dsDNA. However, SFC freely existing with the formation of G-quadruplex from the reaction of thrombin and TBA emits bright chemiluminescence because the high-energy intermediates can transfer energy to SFC (or camel) in solution. Thus, the brightness of light emitted in ODI-CL reaction was proportionally enhanced with the increase of thrombin in a sample due to the increase of G-quadruplex and reduction of dsDNA. The limit of detection (LOD) of the label free aptasensor operated with good linear calibration curve (10–320 mU/ml) was as low as 3 mU/ml (or 43 pM). Also, the biosensor was quantified trace levels of thrombin with good accuracy, precision, and reliability.
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Affiliation(s)
- Jaden Yun
- Luminescent MD, LLC, Hagerstown, MD 21742, United States; Phillips Exeter Academy, Exeter, NH 03833, United States
| | - Ji Hoon Lee
- Luminescent MD, LLC, Hagerstown, MD 21742, United States.
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26
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Lin J, Dai Y, Sang C, Song G, Xiang B, Zhang M, Dong L, Xia X, Ma J, Shen X, Ji S, Zhang S, Wang M, Fang H, Zhang X, Wang X, Zhang B, Zhou J, Fan J, Zhou H, Gao D, Gao Q. Multimodule characterization of immune subgroups in intrahepatic cholangiocarcinoma reveals distinct therapeutic vulnerabilities. J Immunother Cancer 2022; 10:jitc-2022-004892. [PMID: 35863823 PMCID: PMC9310257 DOI: 10.1136/jitc-2022-004892] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2022] [Indexed: 12/14/2022] Open
Abstract
Background Immune microenvironment is well recognized as a critical regulator across cancer types, despite its complex roles in different disease conditions. Intrahepatic cholangiocarcinoma (iCCA) is characterized by a tumor-reactive milieu, emphasizing a deep insight into its immunogenomic profile to provide prognostic and therapeutic implications. Methods We performed genomic, transcriptomic, and proteomic characterization of 255 paired iCCA and adjacent liver tissues. We validated our findings through H&E staining (n=177), multiplex immunostaining (n=188), single-cell RNA sequencing (scRNA-seq) (n=10), in vitro functional studies, and in vivo transposon-based mouse models. Results Integrated multimodule data identified three immune subgroups with distinct clinical, genetic, and molecular features, designated as IG1 (immune-suppressive, 25.1%), IG2 (immune-exclusion, 42.7%), and IG3 (immune-activated, 32.2%). IG1 was characterized by excessive infiltration of neutrophils and immature dendritic cells (DCs). The hallmark of IG2 was the relatively higher tumor-proliferative activity and tumor purity. IG3 exhibited an enrichment of adaptive immune cells, natural killer cells, and activated DCs. These immune subgroups were significantly associated with prognosis and validated in two independent cohorts. Tumors with KRAS mutations were enriched in IG1 and associated with myeloid inflammation-dominated immunosuppression. Although tumor mutation burden was relatively higher in IG2, loss of heterozygosity in human leucocyte antigen and defects in antigen presentation undermined the recognition of neoantigens, contributing to immune-exclusion behavior. Pathological analysis confirmed that tumor-infiltrating lymphocytes and tertiary lymphoid structures were both predominant in IG3. Hepatitis B virus (HBV)-related samples tended to be under-represented in IG1, and scRNA-seq analyses implied that HBV infection indeed alleviated myeloid inflammation and reinvigorated antitumor immunity. Conclusions Our study elucidates that the immunogenomic traits of iCCA are intrinsically heterogeneous among patients, posing great challenge and opportunity for the application of personalized immunotherapy.
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Affiliation(s)
- Jian Lin
- Jinshan Hospital Center for Tumor Diagnosis & Therapy, Jinshan Hospital, Fudan University, Shanghai, China
| | - Yuting Dai
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chen Sang
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China
| | - Guohe Song
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China
| | - Bin Xiang
- Key Laboratory of Computational Biology, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Shanghai, China
| | - Mao Zhang
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China
| | - Liangqing Dong
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China
| | - Xiaoli Xia
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiaqiang Ma
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China
| | - Xia Shen
- Jinshan Hospital Center for Tumor Diagnosis & Therapy, Jinshan Hospital, Fudan University, Shanghai, China
| | - Shuyi Ji
- Jinshan Hospital Center for Tumor Diagnosis & Therapy, Jinshan Hospital, Fudan University, Shanghai, China
| | - Shu Zhang
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China
| | - Mingjie Wang
- Department of Gastroenterology & Hepatology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Hai Fang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaoming Zhang
- The Center for Microbes, Development and Health, Key Laboratory of Molecular Virology & Immunology, Institute Pasteur of Shanghai, University of Chinese Academy of Sciences, Shanghai, China
| | - Xiangdong Wang
- Jinshan Hospital Center for Tumor Diagnosis & Therapy, Jinshan Hospital, Fudan University, Shanghai, China
| | - Bing Zhang
- Lester and Sue Smith Breast Center, Department of Molecular and Human Genetics, Baylor College of Medicine, One Baylor Plaza, Houston, TX 77030, USA
| | - Jian Zhou
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China.,Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jia Fan
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China.,Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Hu Zhou
- Department of Analytical Chemistry and CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Daming Gao
- State Key Laboratory of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| | - Qiang Gao
- Jinshan Hospital Center for Tumor Diagnosis & Therapy, Jinshan Hospital, Fudan University, Shanghai, China .,Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai, China.,Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
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27
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Li Y, Xie L, Song W, Huang M, Cheng Y, Chen S, Gao Y, Yan X. The Role of Neutrophil Extracellular Traps in the Ocular System. Curr Eye Res 2022; 47:1227-1238. [PMID: 35634655 DOI: 10.1080/02713683.2022.2079141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Purpose: Neutrophils remain at the top of congenital and adaptive immune systems. The past 20 years witnessed a steep rise in the interest in neutrophil extracellular traps (NETs), which are a novel type of anti-pathogen mechanism coordinated with neutrophils. However, accumulating data revealed that excessive NETs in the host were associated with exacerbated inflammation, thrombosis, and autoimmunity. Increasing evidence found the participation of NETs in the pathophysiological process of many infectious and sterile diseases in the ocular system. Therefore, we discussed the role of neutrophil extracellular traps in the ocular system in this review.Methods: Articles were searched on PubMed, Embase and Web of science up to December 2021.Results: In this review, we exhibited the protective role of neutrophils patrolling the ocular surface from invading pathogens and their contribution to exacerbated inflammation and thrombogenesis in some ocular diseases. We also discussed the physiological and pathological processes of NET generation to identify novel biomarkers and therapeutic targets to interrupt immoderate NET formation and alleviate NET-induced harmful effects.Conclusions: Neutrophils and NETs are quite important for immune responses in the ocular system, while their negative effects on ocular tissue should also be emphasized, which could serve as novel biomarkers and potential therapeutic targets.
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Affiliation(s)
- Yingsi Li
- Department of Ophthalmology, Peking University First Hospital, Beijing, China
| | - Luoying Xie
- Department of Ophthalmology, Peking University First Hospital, Beijing, China
| | - Wenjing Song
- Department of Ophthalmology, Peking University First Hospital, Beijing, China
| | - Meiting Huang
- Department of Ophthalmology, Peking University First Hospital, Beijing, China
| | - Yu Cheng
- Department of Ophthalmology, Peking University First Hospital, Beijing, China
| | - Shudi Chen
- Department of Ophthalmology, Peking University First Hospital, Beijing, China
| | - Yuan Gao
- Department of Ophthalmology, Peking University First Hospital, Beijing, China
| | - Xiaoming Yan
- Department of Ophthalmology, Peking University First Hospital, Beijing, China
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28
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Morán G, Uberti B, Quiroga J. Role of Cellular Metabolism in the Formation of Neutrophil Extracellular Traps in Airway Diseases. Front Immunol 2022; 13:850416. [PMID: 35493475 PMCID: PMC9039247 DOI: 10.3389/fimmu.2022.850416] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/18/2022] [Indexed: 01/08/2023] Open
Abstract
Neutrophil extracellular traps (NETs) are a recently described mechanism of neutrophils that play an important role in health and disease. NETs are an innate defense mechanism that participate in clearance of pathogens, but they may also cause collateral damage in unrelated host tissues. Neutrophil dysregulation and NETosis occur in multiple lung diseases, such as pathogen-induced acute lung injury, pneumonia, chronic obstructive pulmonary disease (COPD), severe asthma, cystic fibrosis, and recently, the novel coronavirus SARS-CoV-2. More recently, research into immunometabolism has surged due to the possibility of reprogramming metabolism in order to modulate immune functions. The present review analyzes the different metabolic pathways associated with NETs formation, and how these impact on pathologies of the airways.
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Affiliation(s)
- Gabriel Morán
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Benjamín Uberti
- Instituto de Ciencias Clínicas Veterinarias, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - John Quiroga
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile.,Escuela de Graduados, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
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29
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Huang Z, Zhang H, Fu X, Han L, Zhang H, Zhang L, Zhao J, Xiao D, Li H, Li P. Autophagy-driven neutrophil extracellular traps: The dawn of sepsis. Pathol Res Pract 2022; 234:153896. [PMID: 35462228 DOI: 10.1016/j.prp.2022.153896] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 03/28/2022] [Accepted: 04/11/2022] [Indexed: 12/12/2022]
Abstract
Sepsis is a systemic inflammatory syndrome caused by infection disorders. The core mechanism of sepsis is immune dysfunction. Neutrophils are the most abundant circulating white blood cells, which play a crucial role in mediating the innate immune response. Previous studies have shown that an effective way to treat sepsis is through the regulation of neutrophil functions. Autophagy, a highly conserved degradation process, is responsible for removing denatured proteins or damaged organelles within cells and protecting cells from external stimuli. It is a key homeostasis process that promotes neutrophil function and differentiation. Autophagy has been shown to be closely associated with inflammation and immunity. Neutrophils, the first line of innate immunity, migrate to inflammatory sites upon their activation. Neutrophil-mediated autophagy may participate in the clinical course of sepsis. In this review, we summarized and analyzed the latest research findings on the changes in neutrophil external traps during sepsis, the regulatory role of autophagy in neutrophil, and the potential application of autophagy-driven NETs in sepsis, so as to guide clinical treatment of sepsis.
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Affiliation(s)
- Zhenzhen Huang
- Department of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, China
| | - Haodong Zhang
- Department of Hypertension Center, Lanzhou University Second Hospital, Lanzhou, China
| | - Xu Fu
- Key Laboratory of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, China
| | - Li Han
- Key Laboratory of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, China
| | - Haidan Zhang
- Department of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, China
| | - Ling Zhang
- Department of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, China
| | - Jing Zhao
- Department of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, China
| | - Danyang Xiao
- Department of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, China
| | - Hongyao Li
- Department of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, China
| | - Peiwu Li
- Department of Emergency Medicine, Lanzhou University Second Hospital, Lanzhou, China.
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30
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Zhao HJ, Hu YF, Han QJ, Zhang J. Innate and adaptive immune escape mechanisms of hepatitis B virus. World J Gastroenterol 2022; 28:881-896. [PMID: 35317051 PMCID: PMC8908287 DOI: 10.3748/wjg.v28.i9.881] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 08/09/2021] [Accepted: 01/29/2022] [Indexed: 02/06/2023] Open
Abstract
Chronic hepatitis B virus (HBV) infection is an international health problem with extremely high mortality and morbidity rates. Although current clinical chronic hepatitis B (CHB) treatment strategies can partly inhibit and eliminate HBV, viral breakthrough may result due to non-adherence to treatment, the emergence of viral resistance, and a long treatment cycle. Persistent CHB infection arises as a consequence of complex interactions between the virus and the host innate and adaptive immune systems. Therefore, understanding the immune escape mechanisms involved in persistent HBV infection is important for designing novel CHB treatment strategies to clear HBV and achieve long-lasting immune control. This review details the immunological and biological characteristics and escape mechanisms of HBV and the novel immune-based therapies that are currently used for treating HBV.
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Affiliation(s)
- Hua-Jun Zhao
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, Shandong Province, China
| | - Yi-Fei Hu
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, Shandong Province, China
| | - Qiu-Ju Han
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, Shandong Province, China
| | - Jian Zhang
- Institute of Immunopharmaceutical Sciences, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, Shandong Province, China
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31
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Hilscher MB, Shah VH. A NET gain in our understanding of acute liver failure. Hepatology 2022; 75:511-513. [PMID: 34890053 DOI: 10.1002/hep.32278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 12/06/2021] [Indexed: 12/08/2022]
Affiliation(s)
- Moira B Hilscher
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Vijay H Shah
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, Minnesota, USA
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32
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Chen Y, Han L, Qiu X, Wang G, Zheng J. Neutrophil Extracellular Traps in Digestive Cancers: Warrior or Accomplice. Front Oncol 2021; 11:766636. [PMID: 34868992 PMCID: PMC8639597 DOI: 10.3389/fonc.2021.766636] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 11/03/2021] [Indexed: 12/24/2022] Open
Abstract
Characterized as a complex of extracellular DNA fibers and granule proteins, neutrophil extracellular traps (NETs) are generated specifically by neutrophils which play a critical role in host defense and immune regulation. NETs have been initially found crucial for neutrophil anti-microbial function. Recent studies suggest that NETs are involved in tumorigenesis and cancer progression. However, the function of NETs in cancer remains unclear, which might be due to the variation of research models and the heterogeneity of cancers. Although most of malignant tumors have similar biological behaviors, significant differences indeed exist in various systems. Malignant tumors of the digestive system cause the most incidence and mortality of cancer worldwide. In this review, we would focus on research developments on NETs in digestive cancers to provide insights on their role in digestive cancer progression and future research directions.
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Affiliation(s)
- Yuxin Chen
- Cancer Institute, Xuzhou Medical University, Xuzhou, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, China
| | - Lulu Han
- Cancer Institute, Xuzhou Medical University, Xuzhou, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, China.,Center of Clinical Oncology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xiaoyan Qiu
- Cancer Institute, Xuzhou Medical University, Xuzhou, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, China
| | - Gang Wang
- Cancer Institute, Xuzhou Medical University, Xuzhou, China.,Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, China.,Center of Clinical Oncology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Junnian Zheng
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, China.,Center of Clinical Oncology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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33
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Shen D, Lu Y, Li G, Hu M, Li S, Ju H, Zhang M, Wang X. Mechanism of neutrophil extracellular traps generation and their role in trophoblasts apoptosis in gestational diabetes mellitus. Cell Signal 2021; 88:110168. [PMID: 34634453 DOI: 10.1016/j.cellsig.2021.110168] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/24/2021] [Accepted: 10/05/2021] [Indexed: 12/23/2022]
Abstract
Gestational diabetes mellitus (GDM) is a metabolic syndrome occurring in pregnant women and increases the risk of placental dysplasia. Neutrophil extracellular traps (NETs) may play a critical role in placental dysplasia. NETosis (neutrophil cell death by NET release) depends on NADPH/ROS pathway. In view of the adiponectin which is widely believed to be reduced in GDM patients suppresses NADPH oxidase and ROS generation of neutrophil. We speculate that increased NET release is associated with hypoadiponectinemia. Trophoblast apoptosis is significantly increased in GDM patients, but it is not clear whether NETs promotes cell apoptosis. This study aims to reveal the mechanism of Neutrophil Extracellular Traps generation and their role in trophoblast apoptosis in Gestational Diabetes Mellitus. We investigated the generation of NETs by cell-free DNA (cf-DNA) quantification, live-cell imaging, and reactive oxygen species (ROS) measurement. ERK1/2 and p38 MAPK signalling pathway proteins were detected by western blotting. The Cell Counting Kit-8 (CCK-8) assay, flow cytometry, and western blotting were performed to explore the effects of NETs on trophoblast apoptosis. We found that adiponectin inhibited NET release by suppressing ROS production, and p38 MAPK and ERK1/2 proteins were involved in the process. Further, NETs promoted trophoblast apoptosis by activating the ROS-dependent mitochondrial pathway, which is mediated by ERK1/2 signalling. The current study demonstrated that hypoadiponectinemia is the cause of NETs formation and NETs promoting trophoblast apoptosis.
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Affiliation(s)
- Di Shen
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, 324 Jingwu Street, Jinan, Shandong 250021, China; Department of Obstetrics and Gynaecology, Maternal and Child Health Care Hospital of Shandong Provincial, Cheeloo College of Medicine, Shandong University, 238 Jingshi East Road, Jinan, Shandong 250014, China
| | - Yuan Lu
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, 324 Jingwu Street, Jinan, Shandong 250021, China
| | - Guangzhen Li
- Department of General Surgery, Qilu Hospital of Shandong University, 107 Wenhua West Road, 251000, Jinan, China
| | - Min Hu
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, 324 Jingwu Street, Jinan, Shandong 250021, China
| | - Shanling Li
- Department of Obstetrics and Gynaecology, Maternal and Child Health Care Hospital of Shandong Provincial, Cheeloo College of Medicine, Shandong University, 238 Jingshi East Road, Jinan, Shandong 250014, China
| | - Hui Ju
- Department of Obstetrics and Gynaecology, Maternal and Child Health Care Hospital of Shandong Provincial, Cheeloo College of Medicine, Shandong University, 238 Jingshi East Road, Jinan, Shandong 250014, China
| | - Meihua Zhang
- The Laboratory of Placenta-Related Diseases, Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, 238 Jingshi East Road, Jinan, Shandong 250014, China
| | - Xietong Wang
- Department of Obstetrics and Gynaecology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, 324 Jingwu Street, Jinan, Shandong 250021, China; Department of Obstetrics and Gynaecology, Maternal and Child Health Care Hospital of Shandong Provincial, Cheeloo College of Medicine, Shandong University, 238 Jingshi East Road, Jinan, Shandong 250014, China; The Laboratory of Placenta-Related Diseases, Key Laboratory of Birth Regulation and Control Technology of National Health Commission of China, 238 Jingshi East Road, Jinan, Shandong 250014, China.
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34
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Thakur M, Evans B, Schindewolf M, Baumgartner I, Döring Y. Neutrophil Extracellular Traps Affecting Cardiovascular Health in Infectious and Inflammatory Diseases. Cells 2021; 10:1689. [PMID: 34359859 PMCID: PMC8305819 DOI: 10.3390/cells10071689] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/28/2021] [Accepted: 06/28/2021] [Indexed: 02/07/2023] Open
Abstract
Neutrophil extracellular traps (NETs) are web-like structures of decondensed extracellular chromatin fibers and neutrophil granule proteins released by neutrophils. NETs participate in host immune defense by entrapping pathogens. They are pro-inflammatory in function, and they act as an initiator of vascular coagulopathies by providing a platform for the attachment of various coagulatory proteins. NETs are diverse in their ability to alter physiological and pathological processes including infection and inflammation. In this review, we will summarize recent findings on the role of NETs in bacterial/viral infections associated with vascular inflammation, thrombosis, atherosclerosis and autoimmune disorders. Understanding the complex role of NETs in bridging infection and chronic inflammation as well as discussing important questions related to their contribution to pathologies outlined above may pave the way for future research on therapeutic targeting of NETs applicable to specific infections and inflammatory disorders.
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Affiliation(s)
- Manovriti Thakur
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland; (M.T.); (B.E.); (M.S.); (I.B.)
| | - Bryce Evans
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland; (M.T.); (B.E.); (M.S.); (I.B.)
| | - Marc Schindewolf
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland; (M.T.); (B.E.); (M.S.); (I.B.)
| | - Iris Baumgartner
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland; (M.T.); (B.E.); (M.S.); (I.B.)
| | - Yvonne Döring
- Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, University of Bern, CH-3010 Bern, Switzerland; (M.T.); (B.E.); (M.S.); (I.B.)
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University Munich (LMU), 80336 Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, 80336 Munich, Germany
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35
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FKBP4 integrates FKBP4/Hsp90/IKK with FKBP4/Hsp70/RelA complex to promote lung adenocarcinoma progression via IKK/NF-κB signaling. Cell Death Dis 2021; 12:602. [PMID: 34112753 PMCID: PMC8192522 DOI: 10.1038/s41419-021-03857-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 05/16/2021] [Accepted: 05/21/2021] [Indexed: 12/21/2022]
Abstract
FKBP4 belongs to the family of immunophilins, which serve as a regulator for steroid receptor activity. Thus, FKBP4 has been recognized to play a critical role in several hormone-dependent cancers, including breast and prostate cancer. However, there is still no research to address the role of FKBP4 on lung adenocarcinoma (LUAD) progression. We found that FKBP4 expression was elevated in LUAD samples and predicted significantly shorter overall survival based on TCGA and our cohort of LUAD patients. Furthermore, FKBP4 robustly increased the proliferation, metastasis, and invasion of LUAD in vitro and vivo. Mechanistic studies revealed the interaction between FKBP4 and IKK kinase complex. We found that FKBP4 potentiated IKK kinase activity by interacting with Hsp90 and IKK subunits and promoting Hsp90/IKK association. Also, FKBP4 promotes the binding of IKKγ to IKKβ, which supported the facilitation role in IKK complex assembly. We further identified that FKBP4 TPR domains are essential for FKBP4/IKK interaction since its association with Hsp90 is required. In addition, FKBP4 PPIase domains are involved in FKBP4/IKKγ interaction. Interestingly, the association between FKBP4 and Hsp70/RelA favors the transport of RelA toward the nucleus. Collectively, FKBP4 integrates FKBP4/Hsp90/IKK with FKBP4/Hsp70/RelA complex to potentiate the transcriptional activity and nuclear translocation of NF-κB, thereby promoting LUAD progression. Our findings suggest that FKBP4 may function as a prognostic biomarker of LUAD and provide a newly mechanistic insight into modulating IKK/NF-κB signaling.
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36
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Kouroumalis E, Voumvouraki A, Augoustaki A, Samonakis DN. Autophagy in liver diseases. World J Hepatol 2021; 13:6-65. [PMID: 33584986 PMCID: PMC7856864 DOI: 10.4254/wjh.v13.i1.6] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 12/10/2020] [Accepted: 12/26/2020] [Indexed: 02/06/2023] Open
Abstract
Autophagy is the liver cell energy recycling system regulating a variety of homeostatic mechanisms. Damaged organelles, lipids and proteins are degraded in the lysosomes and their elements are re-used by the cell. Investigations on autophagy have led to the award of two Nobel Prizes and a health of important reports. In this review we describe the fundamental functions of autophagy in the liver including new data on the regulation of autophagy. Moreover we emphasize the fact that autophagy acts like a two edge sword in many occasions with the most prominent paradigm being its involvement in the initiation and progress of hepatocellular carcinoma. We also focused to the implication of autophagy and its specialized forms of lipophagy and mitophagy in the pathogenesis of various liver diseases. We analyzed autophagy not only in well studied diseases, like alcoholic and nonalcoholic fatty liver and liver fibrosis but also in viral hepatitis, biliary diseases, autoimmune hepatitis and rare diseases including inherited metabolic diseases and also acetaminophene hepatotoxicity. We also stressed the different consequences that activation or impairment of autophagy may have in hepatocytes as opposed to Kupffer cells, sinusoidal endothelial cells or hepatic stellate cells. Finally, we analyzed the limited clinical data compared to the extensive experimental evidence and the possible future therapeutic interventions based on autophagy manipulation.
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Affiliation(s)
- Elias Kouroumalis
- Liver Research Laboratory, University of Crete Medical School, Heraklion 71110, Greece
| | - Argryro Voumvouraki
- 1 Department of Internal Medicine, AHEPA University Hospital, Thessaloniki 54636, Greece
| | - Aikaterini Augoustaki
- Department of Gastroenterology and Hepatology, University Hospital of Crete, Heraklion 71110, Greece
| | - Dimitrios N Samonakis
- Department of Gastroenterology and Hepatology, University Hospital of Crete, Heraklion 71110, Greece.
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37
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Vorobjeva NV, Chernyak BV. NETosis: Molecular Mechanisms, Role in Physiology and Pathology. BIOCHEMISTRY (MOSCOW) 2020; 85:1178-1190. [PMID: 33202203 PMCID: PMC7590568 DOI: 10.1134/s0006297920100065] [Citation(s) in RCA: 187] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
NETosis is a program for formation of neutrophil extracellular traps (NETs), which consist of modified chromatin decorated with bactericidal proteins from granules and cytoplasm. Various pathogens, antibodies and immune complexes, cytokines, microcrystals, and other physiological stimuli can cause NETosis. Induction of NETosis depends on reactive oxygen species (ROS), the main source of which is NADPH oxidase. Activation of NADPH oxidase depends on increase in the concentration of Ca2+ in the cytoplasm and in some cases on the generation of ROS in mitochondria. NETosis includes release of the granule components into the cytosol, modification of histones leading to chromatin decondensation, destruction of the nuclear envelope, as well as formation of pores in the plasma membrane. In this review, basic mechanisms of NETosis, as well as its role in the pathogenesis of some diseases including COVID-19 are discussed.
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Affiliation(s)
- N V Vorobjeva
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia.
| | - B V Chernyak
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia.
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38
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Liu K, Wang FS, Xu R. Neutrophils in liver diseases: pathogenesis and therapeutic targets. Cell Mol Immunol 2020; 18:38-44. [PMID: 33159158 PMCID: PMC7852892 DOI: 10.1038/s41423-020-00560-0] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 09/15/2020] [Indexed: 02/06/2023] Open
Abstract
Previously, it was assumed that peripheral neutrophils are a homogeneous population that displays antimicrobial functions. However, recent data have revealed that neutrophils are heterogeneous and are additionally involved in tissue damage and immune regulation. The phenotypic and functional plasticity of neutrophils has been identified in patients with cancer, inflammatory disorders, infections, and other diseases. Currently, neutrophils, with their autocrine, paracrine, and immune modulation functions, have been shown to be involved in liver diseases, including viral hepatitis, nonalcoholic steatohepatitis, alcoholic liver disease, liver fibrosis, cirrhosis, liver failure, and liver cancer. Accordingly, this review summarizes the role of neutrophils in liver diseases.
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Affiliation(s)
- Kai Liu
- Peking University 302 Clinical Medical School, Beijing, China.,Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China
| | - Fu-Sheng Wang
- Peking University 302 Clinical Medical School, Beijing, China. .,Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China.
| | - Ruonan Xu
- Treatment and Research Center for Infectious Diseases, The Fifth Medical Center of PLA General Hospital, National Clinical Research Center for Infectious Diseases, Beijing, China.
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39
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Lin Y, Zhao Z, Huang A, Lu M. Interplay between Cellular Autophagy and Hepatitis B Virus Replication: A Systematic Review. Cells 2020; 9:cells9092101. [PMID: 32942717 PMCID: PMC7563265 DOI: 10.3390/cells9092101] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/11/2020] [Accepted: 09/11/2020] [Indexed: 12/18/2022] Open
Abstract
Autophagy, a conserved process in which cells break down and destroy old, damaged, or abnormal proteins and other substances in the cytoplasm through lysosomal degradation, occurs via autophagosome formation and aids in the maintenance of intracellular homeostasis. Autophagy is closely associated with hepatitis B virus (HBV) replication and assembly. Currently, HBV infection is still one of the most serious public health issues worldwide. The unavailability of satisfactory therapeutic strategies for chronic HBV infection indicates an urgent need to elucidate the mechanisms underlying the pathogenesis of HBV infection. Increasing evidence has shown that HBV not only possesses the ability to induce incomplete autophagy but also evades autophagic degradation, indicating that HBV utilizes or hijacks the autophagy machinery for its own replication. Therefore, autophagy might be a crucial target pathway for controlling HBV infection. The definite molecular mechanisms underlying the association between cellular autophagy and HBV replication require further clarification. In this review, we have summarized and discussed the latest findings on the interplay between autophagy and HBV replication.
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Affiliation(s)
- Yong Lin
- Key Laboratory of Molecular Biology of Infectious Diseases (Chinese Ministry of Education), The Second Affiliated Hospital, Institute for Viral Hepatitis, Chongqing Medical University, Chongqing 400016, China; (Z.Z.); (A.H.)
- Correspondence: (Y.L.); (M.L.); Tel./Fax: +86-236-848-6780 (Y.L.); Tel.: +49-2017233530 (M.L.); +49-2017235929 (M.L.)
| | - Zhenyu Zhao
- Key Laboratory of Molecular Biology of Infectious Diseases (Chinese Ministry of Education), The Second Affiliated Hospital, Institute for Viral Hepatitis, Chongqing Medical University, Chongqing 400016, China; (Z.Z.); (A.H.)
| | - Ailong Huang
- Key Laboratory of Molecular Biology of Infectious Diseases (Chinese Ministry of Education), The Second Affiliated Hospital, Institute for Viral Hepatitis, Chongqing Medical University, Chongqing 400016, China; (Z.Z.); (A.H.)
| | - Mengji Lu
- Institute of Virology, University Hospital Essen, University of Duisburg-Essen, 45122 Essen, Germany
- Correspondence: (Y.L.); (M.L.); Tel./Fax: +86-236-848-6780 (Y.L.); Tel.: +49-2017233530 (M.L.); +49-2017235929 (M.L.)
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40
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Zhu JJ, Stenfeldt C, Bishop EA, Canter JA, Eschbaumer M, Rodriguez LL, Arzt J. Mechanisms of Maintenance of Foot-and-Mouth Disease Virus Persistence Inferred From Genes Differentially Expressed in Nasopharyngeal Epithelia of Virus Carriers and Non-carriers. Front Vet Sci 2020; 7:340. [PMID: 32637426 PMCID: PMC7318773 DOI: 10.3389/fvets.2020.00340] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 05/15/2020] [Indexed: 12/13/2022] Open
Abstract
Foot-and-mouth disease virus (FMDV) causes persistent infection of nasopharyngeal epithelial cells in ~50% of infected ruminants. The mechanisms involved are not clear. This study provides a continued investigation of differentially expressed genes (DEG) identified in a previously published transcriptomic study analyzing micro-dissected epithelial samples from FMDV carriers and non-carriers. Pathway analysis of DEG indicated that immune cell trafficking, cell death and hematological system could be affected by the differential gene expression. Further examination of the DEG identified five downregulated (chemerin, CCL23, CXCL15, CXCL16, and CXCL17) and one upregulated (CCL2) chemokines in carriers compared to non-carriers. The differential expression could reduce the recruitment of neutrophils, antigen-experienced T cells and dendritic cells and increase the migration of macrophages and NK cells to the epithelia in carriers, which was supported by DEG expressed in these immune cells. Downregulated chemokine expression could be mainly due to the inhibition of canonical NFκB signaling based on DEG in the signaling pathways and transcription factor binding sites predicted from the proximal promoters. Additionally, upregulated CD69, IL33, and NID1 and downregulated CASP3, IL17RA, NCR3LG1, TP53BP1, TRAF3, and TRAF6 in carriers could inhibit the Th17 response, NK cell cytotoxicity and apoptosis. Based on our findings, we hypothesize that (1) under-expression of chemokines that recruit neutrophils, antigen-experienced T cells and dendritic cells, (2) blocking NK cell binding to target cells and (3) suppression of apoptosis induced by death receptor signaling, viral RNA, and cell-mediated cytotoxicity in the epithelia compromised virus clearance and allowed FMDV to persist. These hypothesized mechanisms provide novel information for further investigation of persistent FMDV infection.
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Affiliation(s)
- James J Zhu
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States
| | - Carolina Stenfeldt
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States.,Department of Diagnostic Medicine/Pathobiology, Kansas State University, Manhattan, KS, United States
| | - Elizabeth A Bishop
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States
| | - Jessica A Canter
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States.,Plum Island Animal Disease Center, Oak Ridge Institute for Science and Education (ORISE), Orient, NY, United States
| | - Michael Eschbaumer
- Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Greifswald, Germany
| | - Luis L Rodriguez
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States
| | - Jonathan Arzt
- USDA-ARS, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY, United States
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41
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Ke PY. Mitophagy in the Pathogenesis of Liver Diseases. Cells 2020; 9:cells9040831. [PMID: 32235615 PMCID: PMC7226805 DOI: 10.3390/cells9040831] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/25/2020] [Accepted: 03/27/2020] [Indexed: 02/07/2023] Open
Abstract
Autophagy is a catabolic process involving vacuolar sequestration of intracellular components and their targeting to lysosomes for degradation, thus supporting nutrient recycling and energy regeneration. Accumulating evidence indicates that in addition to being a bulk, nonselective degradation mechanism, autophagy may selectively eliminate damaged mitochondria to promote mitochondrial turnover, a process termed “mitophagy”. Mitophagy sequesters dysfunctional mitochondria via ubiquitination and cargo receptor recognition and has emerged as an important event in the regulation of liver physiology. Recent studies have shown that mitophagy may participate in the pathogenesis of various liver diseases, such as liver injury, liver steatosis/fatty liver disease, hepatocellular carcinoma, viral hepatitis, and hepatic fibrosis. This review summarizes the current knowledge on the molecular regulations and functions of mitophagy in liver physiology and the roles of mitophagy in the development of liver-related diseases. Furthermore, the therapeutic implications of targeting hepatic mitophagy to design a new strategy to cure liver diseases are discussed.
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Affiliation(s)
- Po-Yuan Ke
- Department of Biochemistry & Molecular Biology and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; ; Tel.: +886-3-211-8800 (ext. 5115); Fax: +886-3-211-8700
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
- Division of Allergy, Immunology, and Rheumatology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
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42
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Liang X, Liu L, Wang Y, Guo H, Fan H, Zhang C, Hou L, Liu Z. Autophagy-driven NETosis is a double-edged sword - Review. Biomed Pharmacother 2020; 126:110065. [PMID: 32200255 DOI: 10.1016/j.biopha.2020.110065] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 02/25/2020] [Accepted: 02/28/2020] [Indexed: 02/06/2023] Open
Abstract
Autophagy is a cellular mechanism responsible for delivering protein aggregates or damaged organelles to lysosomes for degradation. It is also simultaneously a precise regulatory process, which is crucial for dealing with hunger, oxidative stress, and pathogen defense. Neutrophil Extracellular Traps (NETs), which form a part of a newly described bactericidal process, are reticular structures composed of a DNA backbone and multiple functional proteins, formed via a process known as NETosis. NETs exert their anti-infection activity by capturing pathogenic microorganisms, inhibiting their spread and inactivating virulence factors. However, NETs may also activate an immune response in non-infectious diseases, leading to tissue damage. Although the mechanism underlying this phenomenon is unclear, a large number of studies have suggested that autophagy may be involved. Autophagy-mediated NETs not only induce inflammation and tissue damage, but can also lead to cell senescence, malignant transformation, and cell death. Autophagy-dependent NETs also play a beneficial role in the hostwith respect to pathogen clearance and immune defense. Through careful review of the literature, we have found that the distinct roles of autophagy in NETosis may be dependent on the extent of autophagy and the specific manner in which it was induced. This article summarizes numerous recent studies, and reviews the role of autophagy-driven NETosis in various diseases, in the hope that this will lead to the development of more effective treatments.
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Affiliation(s)
- Xiaofei Liang
- Department of Laboratory Medicine, The First Hospital of Qiqihar, Qiqihar, 161005, China; Department of Laboratory Medicine, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, 161005, China
| | - Li Liu
- Department of Laboratory Medicine, The First Hospital of Qiqihar, Qiqihar, 161005, China; Department of Laboratory Medicine, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, 161005, China.
| | - Yan Wang
- Department of Laboratory Medicine, The First Hospital of Qiqihar, Qiqihar, 161005, China; Department of Laboratory Medicine, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, 161005, China
| | - Haipeng Guo
- Department of Laboratory Medicine, The First Hospital of Qiqihar, Qiqihar, 161005, China; Department of Laboratory Medicine, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, 161005, China
| | - Hua Fan
- Department of Laboratory Medicine, The First Hospital of Qiqihar, Qiqihar, 161005, China; Department of Laboratory Medicine, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, 161005, China
| | - Chao Zhang
- Department of Laboratory Medicine, The First Hospital of Qiqihar, Qiqihar, 161005, China; Department of Laboratory Medicine, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, 161005, China
| | - Lili Hou
- Department of Laboratory Medicine, The First Hospital of Qiqihar, Qiqihar, 161005, China; Department of Laboratory Medicine, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, 161005, China
| | - Zhibo Liu
- Department of Laboratory Medicine, The First Hospital of Qiqihar, Qiqihar, 161005, China; Department of Laboratory Medicine, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, 161005, China
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43
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Zhu JJ, Canter JA, Rodriguez LL, Arzt J. A novel bovine CXCL15 gene in the GRO chemokine gene cluster. Vet Immunol Immunopathol 2019; 220:109990. [PMID: 31855743 DOI: 10.1016/j.vetimm.2019.109990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/15/2019] [Accepted: 12/07/2019] [Indexed: 12/14/2022]
Abstract
In our previous transcriptomic studies using DNA microarray analysis, a probe designed from an unknown expressed sequence tag (EST) showed significant differential gene expression in the pharyngeal epithelia. The objectives of this study are to annotate the gene sequence and compare the gene transcription levels among different bovine tissues based on our published microarray data. The gene transcribing the EST contains a 90-amino-acid protein sequence. The results of bioinformatic analyses using comparative genetics, multiple sequence alignments, phylogenetic analysis and promoter sequence analysis indicated that this gene is a novel ELR+ CXCL gene orthologous to mouse CXCL15. The gene is highly conserved in ruminants and exists in many other mammals but not in chickens, primates or pigs. Phylogenetic analysis and gene structures showed that CXCL15 is closer to CXCL8 than to other ELR+ CXCLs. Our microarray data show that bovine CXCL15 expression was higher in laser capture micro-dissected bovine pharyngeal epithelia than in the whole pharyngeal tissues, which agrees with the expression in mice. However, unlike the high expression in the mouse lung, our results showed that the bovine nasal turbinate, dorsal nasopharynx, dorsal soft palate and tongue expressed higher levels of CXCL15 than the lung and skins. Promoter analysis showed that ruminants have more immune-related transcription factor binding sites in the proximal promoters of CXCL15 than mouse. CXCL15 has previously only been reported in mice and has neutrophil chemotactic activity. Given the critical roles of neutrophils in innate immunity, this study provides useful information for further characterization of bovine CXCL15.
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Affiliation(s)
- James J Zhu
- United States Department of Agriculture, Agricultural Research Service, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY 11957 United States.
| | - Jessica A Canter
- United States Department of Agriculture, Agricultural Research Service, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY 11957 United States
| | - Luis L Rodriguez
- United States Department of Agriculture, Agricultural Research Service, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY 11957 United States
| | - Jonathan Arzt
- United States Department of Agriculture, Agricultural Research Service, Foreign Animal Disease Research Unit, Plum Island Animal Disease Center, Orient, NY 11957 United States
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