1
|
Nguyen M, Ahn P, Dawi J, Gargaloyan A, Kiriaki A, Shou T, Wu K, Yazdan K, Venketaraman V. The Interplay between Mycobacterium tuberculosis and Human Microbiome. Clin Pract 2024; 14:198-213. [PMID: 38391403 PMCID: PMC10887847 DOI: 10.3390/clinpract14010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/24/2024] Open
Abstract
Tuberculosis (TB), a respiratory disease caused by Mycobacterium tuberculosis (Mtb), is a significant cause of mortality worldwide. The lung, a breeding ground for Mtb, was once thought to be a sterile environment, but has now been found to host its own profile of microbes. These microbes are critical in the development of the host immune system and can produce metabolites that aid in host defense against various pathogens. Mtb infection as well as antibiotics can shift the microbial profile, causing dysbiosis and dampening the host immune response. Additionally, increasing cases of drug resistant TB have impacted the success rates of the traditional therapies of isoniazid, rifampin, pyrazinamide, and ethambutol. Recent years have produced tremendous research into the human microbiome and its role in contributing to or attenuating disease processes. Potential treatments aimed at altering the gut-lung bacterial axis may offer promising results against drug resistant TB and help mitigate the effects of TB.
Collapse
Affiliation(s)
- Michelle Nguyen
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Phillip Ahn
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - John Dawi
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Areg Gargaloyan
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Anthony Kiriaki
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Tiffany Shou
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Kevin Wu
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Kian Yazdan
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Vishwanath Venketaraman
- College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA 91766, USA
| |
Collapse
|
2
|
Olivier FAB, Traven A. Quantitative live-cell imaging of Candida albicans escape from immune phagocytes. STAR Protoc 2023; 4:102737. [PMID: 37980567 PMCID: PMC10694764 DOI: 10.1016/j.xpro.2023.102737] [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: 07/21/2023] [Revised: 10/04/2023] [Accepted: 11/02/2023] [Indexed: 11/21/2023] Open
Abstract
Population-level dynamics of host-pathogen interactions can be characterized using quantitative live-cell imaging. Here, we present a protocol for infecting macrophages with the fungal pathogen Candida albicans in vitro and quantitative live-cell imaging of immune and pathogen responses. We describe steps for detailed image analysis and provide resources for quantification of phagocytosis and pathogen escape, as well as macrophage membrane permeabilization and viability. This protocol is modifiable for applications with a range of pathogens, immune cell types, and host-pathogen mechanisms. For complete details on the use and execution of this protocol, please refer to Olivier et al.1.
Collapse
Affiliation(s)
- Françios A B Olivier
- Infection Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; Centre to Impact AMR, Monash University, Clayton, VIC 3800, Australia.
| | - Ana Traven
- Infection Program, Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; Centre to Impact AMR, Monash University, Clayton, VIC 3800, Australia.
| |
Collapse
|
3
|
Conn BN, Wozniak KL. Innate Pulmonary Phagocytes and Their Interactions with Pathogenic Cryptococcus Species. J Fungi (Basel) 2023; 9:617. [PMID: 37367553 PMCID: PMC10299524 DOI: 10.3390/jof9060617] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 06/28/2023] Open
Abstract
Cryptococcus neoformans is an opportunistic fungal pathogen that causes over 180,000 annual deaths in HIV/AIDS patients. Innate phagocytes in the lungs, such as dendritic cells (DCs) and macrophages, are the first cells to interact with the pathogen. Neutrophils, another innate phagocyte, are recruited to the lungs during cryptococcal infection. These innate cells are involved in early detection of C. neoformans, as well as the removal and clearance of cryptococcal infections. However, C. neoformans has developed ways to interfere with these processes, allowing for the evasion of the host's innate immune system. Additionally, the innate immune cells have the ability to aid in cryptococcal pathogenesis. This review discusses recent literature on the interactions of innate pulmonary phagocytes with C. neoformans.
Collapse
Affiliation(s)
| | - Karen L. Wozniak
- Department of Microbiology and Molecular Genetics, Oklahoma State University, 307 Life Science East, Stillwater, OK 74078, USA;
| |
Collapse
|
4
|
Ahmadi Ghezeldasht S, Momen Heravi M, Valizadeh N, Rafatpanah H, Shamsian SA, Mosavat A, Rezaee SA. Development of a Novel HTLV-1 Protease: Human Fcγ1 Recombinant Fusion Molecule in the CHO Eukaryotic Expression System. Appl Biochem Biotechnol 2023; 195:1862-1876. [PMID: 36399306 PMCID: PMC9673214 DOI: 10.1007/s12010-022-04259-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2022] [Indexed: 11/19/2022]
Abstract
Human T-cell leukaemia virus type 1 (HTLV-1) is the causative agent of two life-threatening diseases, adult T cell leukaemia/lymphoma (ATLL), and HTLV-1-associated myelopathy/tropical spastic (HAM/TSP). HTLV-1 protease (HTLV-1-PR) is an aspartic protease that represents a promising target for therapeutic purposes like human immunodeficiency virus-PR inhibitors (HIV-PR). Therefore, in this study, the human Fc fusion recombinant-PR (HTLV-1-PR:hFcγ1) was designed and expressed for two applications, finding a blocking substrate as a potential therapeutic or a potential subunit peptide vaccine. The PCR amplified DNA sequences encoding the HTLV-1-PR from the MT2-cell line using specific primers with restriction enzyme sites of Not1 and Xba1. The construct was then cloned to pTZ57R/T TA plasmid and, after confirming the PR sequence, subcloned into the pDR2ΔEF1α Fc-expression vector to create pDR2ΔEF1α.HTLV-1-PR:hFcγ1. The integrity of recombinant DNA was confirmed by sequencing to ensure that the engineered construct was in the frame. The recombinant fusion protein was then produced in the Chinese hamster ovary cell (CHO) system and was purified from its supernatant using HiTrap-rPA column affinity chromatography. Then, the immunofluorescence assay (IFA) co-localisation method showed that HTLV-1-PR:hFc recombinant fusion protein has appropriate folding as it binds to the anti-Fcγ antibody; the Fcγ1 tag participates to have HTLV-1-PR:hFcγ1 as a dimeric secretory protein. The development and production of HTLV-1-PR can be used to find a blocking substrate as a potential therapeutic molecule and apply it in an animal model to assess its immunogenicity and potential protection against HTLV-1 infection.
Collapse
Affiliation(s)
- Sanaz Ahmadi Ghezeldasht
- Inflammation and Inflammatory Diseases Division, Medical Campus, Immunology Research Center, Mashhad University of Medical Sciences, Azadi Square, Mashhad, 9177948564 Iran
- Blood Borne Infections Research Center, Academic Center for Education, Culture and Research (ACECR), Azadi Square, Ferdowsi University Campus, Razavi Khorasan, Mashhad, 9177949367 Iran
| | - Mastoureh Momen Heravi
- Inflammation and Inflammatory Diseases Division, Medical Campus, Immunology Research Center, Mashhad University of Medical Sciences, Azadi Square, Mashhad, 9177948564 Iran
| | - Narges Valizadeh
- Inflammation and Inflammatory Diseases Division, Medical Campus, Immunology Research Center, Mashhad University of Medical Sciences, Azadi Square, Mashhad, 9177948564 Iran
| | - Houshang Rafatpanah
- Inflammation and Inflammatory Diseases Division, Medical Campus, Immunology Research Center, Mashhad University of Medical Sciences, Azadi Square, Mashhad, 9177948564 Iran
| | - Seyed Aliakbar Shamsian
- Blood Borne Infections Research Center, Academic Center for Education, Culture and Research (ACECR), Azadi Square, Ferdowsi University Campus, Razavi Khorasan, Mashhad, 9177949367 Iran
- Department of Parasitology and Mycology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Arman Mosavat
- Blood Borne Infections Research Center, Academic Center for Education, Culture and Research (ACECR), Azadi Square, Ferdowsi University Campus, Razavi Khorasan, Mashhad, 9177949367 Iran
| | - Seyed Abdolrahim Rezaee
- Inflammation and Inflammatory Diseases Division, Medical Campus, Immunology Research Center, Mashhad University of Medical Sciences, Azadi Square, Mashhad, 9177948564 Iran
| |
Collapse
|
5
|
Rojas-Espinosa O, Beristain-Cornelio G, Santillán-Flores MA, Arce-Paredes P, Islas-Trujillo S, Rivero-Silva MÁ. A neutrophil-based test as an auxiliary tool for substantiating the diagnosis of bovine tuberculosis. Int J Mycobacteriol 2022; 11:190-198. [PMID: 35775552 DOI: 10.4103/ijmy.ijmy_71_22] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Background Bovine tuberculosis (bTB) is still a prominent threat to animal health; lacking an efficient vaccine, other than BCG to get rid of tuberculosis, the most effective way for this is culling and slaughtering the infected animals. There are several cellular, serological, and molecular tests for the diagnosis of the disease but the most practical one at the field level is the double skin testing with bovine and aviary tuberculins. This is not a very specific test but is sensitive enough to identify most diseased animals; adjunct practical tests are desirable to strengthen the utility of skin tests. All lymphoid and myeloid cells participate, in diverse grades, in the immune response to tuberculosis with neutrophils playing an unintended pathologic role. The study aimed to investigate the response of neutrophils to agents present in the sera of tuberculous cows. Methods We have developed a neutrophil-based test (N BT) to identify diseased cows within a herd suspected of having tuberculosis; a positive N BT correlates with a positive double skin test. In this test, healthy neutrophils are incubated with the sera of healthy or tuberculous cows for 3 and 6 h, and the nuclear morphologic changes are recorded and analyzed. Results Sera from tuberculous but not from healthy cows induce nuclear alterations including pyknosis, swelling, apoptosis, and sometimes NETosis, in healthy neutrophils, and CFP 10 and ESAT 6 participate in the phenomenon. Conclusion We propose the N BT as an auxiliary tool for substantiating the diagnosis of bTB reinforcing the PPD test outcome to help decide whether or not a cow should be sacrificed.
Collapse
Affiliation(s)
- Oscar Rojas-Espinosa
- Department of Immunology, National School of Biological Sciences, National Polytechnic Institute, Mexico City, México
| | - Guadalupe Beristain-Cornelio
- Department of Immunology, National School of Biological Sciences, National Polytechnic Institute, Mexico City, México
| | | | - Patricia Arce-Paredes
- Department of Immunology, National School of Biological Sciences, National Polytechnic Institute, Mexico City, México
| | - Sergio Islas-Trujillo
- Department of Immunology, National School of Biological Sciences, National Polytechnic Institute, Mexico City, México
| | - Miguel Ángel Rivero-Silva
- Department of Immunology, National School of Biological Sciences, National Polytechnic Institute, Mexico City, México
| |
Collapse
|
6
|
Pharmacodynamic and immunomodulatory effects of polymyxin B in combination with fosfomycin against KPC-2-producing Klebsiella pneumoniae. Int J Antimicrob Agents 2022; 59:106566. [DOI: 10.1016/j.ijantimicag.2022.106566] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 02/25/2022] [Accepted: 03/06/2022] [Indexed: 11/23/2022]
|
7
|
Gruijs M, Sewnath CAN, Egmond MV. Therapeutic exploitation of neutrophils to fight cancer. Semin Immunol 2021; 57:101581. [PMID: 34922817 DOI: 10.1016/j.smim.2021.101581] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/22/2021] [Accepted: 12/09/2021] [Indexed: 12/18/2022]
Abstract
Antibody-based immunotherapy is a promising strategy in cancer treatment. Antibodies can directly inhibit tumor growth, induce complement-dependent cytotoxicity and induce Fc receptor-mediated elimination of tumor cells by macrophages and natural killer cells. Until now, however, neutrophils have been largely overlooked as potential effector cells, even though they are the most abundant type of immune cells in the circulation. Neutrophils display heterogeneity, especially in the context of cancer. Therefore, their role in cancer is debated. Nevertheless, neutrophils possess natural anti-tumor properties and appropriate stimulation, i.e. specific targeting via antibody therapy, induces potent tumor cell killing, especially via targeting of the immunoglobulin A Fc receptor (FcαRI, CD89). In this review we address the mechanisms of tumor cell killing by neutrophils and the role of neutrophils in induction of anti-tumor immunity. Moreover, possibilities for therapeutic targeting are discussed.
Collapse
Affiliation(s)
- Mandy Gruijs
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam - Amsterdam Institute for Infection and Immunity, De Boelelaan 1117, Amsterdam, the Netherlands
| | - Celine A N Sewnath
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam - Amsterdam Institute for Infection and Immunity, De Boelelaan 1117, Amsterdam, the Netherlands
| | - Marjolein van Egmond
- Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Molecular Cell Biology and Immunology, Cancer Center Amsterdam - Amsterdam Institute for Infection and Immunity, De Boelelaan 1117, Amsterdam, the Netherlands; Amsterdam UMC, Vrije Universiteit Amsterdam, Department of Surgery, Cancer Center Amsterdam, De Boelelaan 1117, Amsterdam, the Netherlands.
| |
Collapse
|
8
|
Han J, Shi Y, Willis G, Imani J, Kwon MY, Li G, Ayaub E, Ghanta S, Ng J, Hwang N, Tsoyi K, El-Chemaly S, Kourembanas S, Mitsialis SA, Rosas IO, Liu X, Perrella MA. Mesenchymal stromal cell-derived syndecan-2 regulates the immune response during sepsis to foster bacterial clearance and resolution of inflammation. FEBS J 2021; 289:417-435. [PMID: 34355516 PMCID: PMC8766882 DOI: 10.1111/febs.16154] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 06/28/2021] [Accepted: 08/04/2021] [Indexed: 12/15/2022]
Abstract
Sepsis is a life-threatening process related to a dysregulated host response to an underlying infection, which results in organ dysfunction and poor outcomes. Therapeutic strategies using mesenchymal stromal cells (MSCs) are under investigation for sepsis, with efforts to improve cellular utility. Syndecan (SDC) proteins are transmembrane proteoglycans involved with cellular signaling events including tissue repair and modulating inflammation. Bone marrow-derived human MSCs express syndecan-2 (SDC2) at a level higher than other SDC family members; thus, we explored SDC2 in MSC function. Administration of human MSCs silenced for SDC2 in experimental sepsis resulted in decreased bacterial clearance, and increased tissue injury and mortality compared with wild-type MSCs. These findings were associated with a loss of resolution of inflammation in the peritoneal cavity, and higher levels of proinflammatory mediators in organs. MSCs silenced for SDC2 had a decreased ability to promote phagocytosis of apoptotic neutrophils by macrophages in the peritoneum, and also a diminished capability to convert macrophages from a proinflammatory to a proresolution phenotype via cellular or paracrine actions. Extracellular vesicles are a paracrine effector of MSCs that may contribute to resolution of inflammation, and their production was dramatically reduced in SDC2-silenced human MSCs. Collectively, these data demonstrate the importance of SDC2 for cellular and paracrine function of human MSCs during sepsis.
Collapse
Affiliation(s)
- Junwen Han
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,School of Life Sciences, Beijing University of Chinese Medicine, China
| | - Yuanyuan Shi
- School of Life Sciences, Beijing University of Chinese Medicine, China
| | - Gareth Willis
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital and Harvard Medical School, MA, USA
| | - Jewel Imani
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Min-Young Kwon
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Gu Li
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Ehab Ayaub
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Sailaja Ghanta
- Department of Pediatric Newborn Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Julie Ng
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Narae Hwang
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Konstantin Tsoyi
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Souheil El-Chemaly
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Stella Kourembanas
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital and Harvard Medical School, MA, USA
| | - S Alex Mitsialis
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital and Harvard Medical School, MA, USA
| | - Ivan O Rosas
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Xiaoli Liu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,Department of Pediatric Newborn Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Mark A Perrella
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,Department of Pediatric Newborn Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| |
Collapse
|
9
|
Adil S, Paracha RZ, Tariq S, Nisar M, Ijaz S, Siddiqa A, Hussain Z, Amir A. A Computational Systems Analyses to Identify Biomarkers and Mechanistic Link in Psoriasis and Cutaneous Squamous Cell Carcinoma. Front Immunol 2021; 12:662528. [PMID: 34267747 PMCID: PMC8276676 DOI: 10.3389/fimmu.2021.662528] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 05/19/2021] [Indexed: 11/13/2022] Open
Abstract
Psoriasis is the most common and chronic skin disease that affects individuals from every age group. The rate of psoriasis is increasing over the time in both developed and developing countries. Studies have revealed the possibility of association of psoriasis with skin cancers, particularly non-melanoma skin cancers (NMSC), which, include basal cell carcinoma and cutaneous squamous cell carcinoma (cSCC). There is a need to analyze the disease at molecular level to propose potential biomarkers and therapeutic targets in comparison to cSCC. Therefore, the second analyzed disease of this study is cSCC. It is the second most common prevalent skin cancer all over the world with the potential to metastasize and recur. There is an urge to validate the proposed biomarkers and discover new potential biomarkers as well. In order to achieve the goals and objectives of the study, microarray and RNA-sequencing data analyses were performed followed by network analysis. Afterwards, quantitative systems biology was implemented to analyze the results at a holistic level. The aim was to predict the molecular patterns that can lead psoriasis to cancer. The current study proposed potential biomarkers and therapeutic targets for psoriasis and cSCC. IL-17 signaling pathway is also identified as significant pathway in both diseases. Moreover, the current study proposed that autoimmune pathology, neutrophil recruitment, and immunity to extracellular pathogens are sensitive towards MAPKs (MAPK13 and MAPK14) and genes for AP-1 (FOSL1 and FOS). Therefore, these genes should be further studied in gene knock down based studies as they may play significant role in leading psoriasis towards cancer.
Collapse
Affiliation(s)
- Sidra Adil
- Research Center for Modeling and Simulation, National University of Sciences and Technology, Islamabad, Pakistan
| | - Rehan Zafar Paracha
- Research Center for Modeling and Simulation, National University of Sciences and Technology, Islamabad, Pakistan
| | - Salma Tariq
- Research Center for Modeling and Simulation, National University of Sciences and Technology, Islamabad, Pakistan
| | - Maryum Nisar
- Research Center for Modeling and Simulation, National University of Sciences and Technology, Islamabad, Pakistan
| | - Sadaf Ijaz
- Research Center for Modeling and Simulation, National University of Sciences and Technology, Islamabad, Pakistan
| | - Amnah Siddiqa
- Jackson Laboratory for Genomic Medicine, Farmington, CT, United States
| | - Zamir Hussain
- Research Center for Modeling and Simulation, National University of Sciences and Technology, Islamabad, Pakistan
| | - Afreenish Amir
- National Institute of Health (Pakistan), Islamabad, Pakistan
| |
Collapse
|
10
|
Hosokawa Y, Hosokawa I, Ozaki K, Matsuo T. Nobiletin Inhibits Inflammatory Reaction in Interleukin-1β-Stimulated Human Periodontal Ligament Cells. Pharmaceutics 2021; 13:667. [PMID: 34066937 PMCID: PMC8148442 DOI: 10.3390/pharmaceutics13050667] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 11/16/2022] Open
Abstract
The immune response in periodontal lesions is involved in the progression of periodontal disease. Therefore, it is important to find a bioactive substance that has anti-inflammatory effects in periodontal lesions. This study aimed to examine if nobiletin, which is found in the peel of citrus fruits, could inhibit inflammatory responses in interleukin (IL)-1β-stimulated human periodontal ligament cells (HPDLCs). The release of cytokines (IL-6, IL-8, CXCL10, CCL20, and CCL2) and matrix metalloproteinases (MMP-1 and MMP-3) was assessed by ELISA. The expression of cell adhesion molecules (ICAM-1and VCAM-1) and the activation of signal transduction pathways (nuclear factor (NF)-κB, mitogen-activated protein kinases (MAPKs) and protein kinase B (Akt)) in HPDLCs were detected by Western blot analysis. Our experiments revealed that nobiletin decreased the expression of inflammatory cytokines, cell adhesion molecules, and MMPs in IL-1β-stimulated HPDLCs. Moreover, we revealed that nobiletin treatment could suppress the activation of the NF-κB, MAPKs, and Akt pathways. These findings indicate that nobiletin could inhibit inflammatory reactions in IL-1β-stimulated HPDLCs by inhibiting multiple signal transduction pathways, including NF-κB, MAPKs, and Akt.
Collapse
Affiliation(s)
- Yoshitaka Hosokawa
- Department of Conservative Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8504, Japan; (I.H.); (T.M.)
| | - Ikuko Hosokawa
- Department of Conservative Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8504, Japan; (I.H.); (T.M.)
| | - Kazumi Ozaki
- Department of Oral Health Care Promotion, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8504, Japan;
| | - Takashi Matsuo
- Department of Conservative Dentistry, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770-8504, Japan; (I.H.); (T.M.)
| |
Collapse
|
11
|
Go DM, Lee SH, Lee SH, Woo SH, Kim K, Kim K, Park KS, Park JH, Ha SJ, Kim WH, Choi JH, Kim DY. Programmed Death Ligand 1-Expressing Classical Dendritic Cells MitigateHelicobacter-Induced Gastritis. Cell Mol Gastroenterol Hepatol 2021; 12:715-739. [PMID: 33894424 PMCID: PMC8267570 DOI: 10.1016/j.jcmgh.2021.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 04/13/2021] [Accepted: 04/13/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Helicobacter pylori has been reported to modulate local immune responses to colonize persistently in gastric mucosa. Although the induced expression of programmed cell death ligand 1 (PD-L1) has been suggested as an immune modulatory mechanism for persistent infection of H pylori, the main immune cells expressing PD-L1 and their functions in Helicobacter-induced gastritis still remain to be elucidated. METHODS The blockades of PD-L1 with antibody or PD-L1-deficient bone marrow transplantation were performed in Helicobacter-infected mice. The main immune cells expressing PD-L1 in Helicobacter-infected stomach were determined by flow cytometry and immunofluorescence staining. Helicobacter felis or H pylori-infected dendritic cell (DC)-deficient mouse models including Flt3-/-, Zbtb46-diphtheria toxin receptor, and BDCA2-diphtheria toxin receptor mice were analyzed for pathologic changes and colonization levels. Finally, the location of PD-L1-expressing DCs and the correlation with H pylori infection were analyzed in human gastric tissues using multiplexed immunohistochemistry. RESULTS Genetic or antibody-mediated blockade of PD-L1 aggravated Helicobacter-induced gastritis with mucosal metaplasia. Gastric classical DCs expressed considerably higher levels of PD-L1 than other immune cells and co-localized with T cells in gastritis lesions from Helicobacter-infected mice and human beings. H felis- or H pylori-infected Flt3-/- or classical DC-depleted mice showed aggravated gastritis with severe T-cell and neutrophil accumulation with low bacterial loads compared with that in control mice. Finally, PD-L1-expressing DCs were co-localized with T cells and showed a positive correlation with H pylori infection in human subjects. CONCLUSIONS The PD-1/PD-L1 pathway may be responsible for the immune modulatory function of gastric DCs that protects the gastric mucosa from Helicobacter-induced inflammation, but allows persistent Helicobacter colonization.
Collapse
Affiliation(s)
- Du-Min Go
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Seung Hyun Lee
- Department of Life Sciences, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Su-Hyung Lee
- Division of Cancer Biology, Research Institute of National Cancer Center, Gyeonggi-do, Republic of Korea
| | - Sang-Ho Woo
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Kibyeong Kim
- Department of Life Sciences, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Kyeongdae Kim
- Department of Life Sciences, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Kyu Seong Park
- Department of Life Sciences, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Jong-Hwan Park
- Laboratory Animal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Sang-Jun Ha
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Woo Ho Kim
- Department of Pathology, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Jae-Hoon Choi
- Department of Life Sciences, College of Natural Sciences, Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea.
| | - Dae-Yong Kim
- Department of Veterinary Pathology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea.
| |
Collapse
|
12
|
Abstract
ABSTRACT Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are caused by an exaggerated inflammatory response arising from a wide variety of pulmonary and systemic insults. Lung tissue is composed of a variety of cell populations, including parenchymal and immune cells. Emerging evidence has revealed that multiple cell populations in the lung work in concert to regulate lung inflammation in response to both direct and indirect stimulations. To date, the question of how different types of pulmonary cells communicate with each other and subsequently regulate or modulate inflammatory cascades remains to be fully addressed. In this review, we provide an overview of current advancements in understanding the role of cell-cell interaction in the development of ALI and depict molecular mechanisms by which cell-cell interactions regulate lung inflammation, focusing on inter-cellular activities and signaling pathways that point to possible therapeutic opportunities for ALI/ARDS.
Collapse
Affiliation(s)
- Huiting Zhou
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Institute of Pediatric Research, Children’s Hospital of Soochow University, Suzhou, China
| | - Erica K. Fan
- Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania
| | - Jie Fan
- Department of Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Research and Development, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| |
Collapse
|
13
|
Abstract
ABSTRACT Host cells recognize molecules that signal danger using pattern recognition receptors (PRRs). Toll-like receptors (TLRs) are the most studied class of PRRs and detect pathogen-associated molecular patterns and danger-associated molecular patterns. Cellular TLR activation and signal transduction can therefore contain, combat, and clear danger by enabling appropriate gene transcription. Here, we review the expression, regulation, and function of different TLRs, with an emphasis on TLR-4, and how TLR adaptor protein binding directs intracellular signaling resulting in activation or termination of an innate immune response. Finally, we highlight the recent progress of research on the involvement of S100 proteins as ligands for TLR-4 in inflammatory disease.
Collapse
|
14
|
Bickett TE, McLean J, Creissen E, Izzo L, Hagan C, Izzo AJ, Silva Angulo F, Izzo AA. Characterizing the BCG Induced Macrophage and Neutrophil Mechanisms for Defense Against Mycobacterium tuberculosis. Front Immunol 2020; 11:1202. [PMID: 32625209 PMCID: PMC7314953 DOI: 10.3389/fimmu.2020.01202] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 05/14/2020] [Indexed: 12/16/2022] Open
Abstract
The live attenuated Mycobacterium bovis strain, Bacille Calmette Guérin (BCG) is a potent innate immune stimulator. In the C57BL/6 mouse model of tuberculosis, BCG vaccination leads to a significant reduction of Mycobacterium tuberculosis burden after aerogenic infection. Our studies indicated that BCG induced protection against pulmonary tuberculosis was independent of T cells and present as early as 7 days after vaccination. This protection showed longevity, as it did not wane when conventional T cell and TNF-α deficient mice were infected 30 days post-vaccination. As BCG induced mycobacterial killing after 7 days, this study investigated the contributions of the innate immune system after BCG vaccination to better understand mechanisms required for mycobacterial killing. Subcutaneous BCG inoculation resulted in significant CD11b+F4/80+ monocyte subset recruitment into the lungs within 7 days. Further studies revealed that killing of mycobacteria was dependent on the viability of BCG, because irradiated BCG did not have the same effect. Although others have identified BCG as a facilitator of trained innate immunity, we found that BCG reduced the mycobacterial burden in the absence of mechanisms required for trained innate immunity, highlighting a role for macrophages and neutrophils for vaccine induced killing of M. tuberculosis.
Collapse
Affiliation(s)
- Thomas E Bickett
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Jennifer McLean
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Elizabeth Creissen
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Linda Izzo
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Cassidy Hagan
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Antonio J Izzo
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Fabiola Silva Angulo
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| | - Angelo A Izzo
- Department of Microbiology Immunology and Pathology, Cell and Molecular Biology, Colorado State University, Fort Collins, CO, United States
| |
Collapse
|
15
|
Bhute S, Sarmah D, Datta A, Rane P, Shard A, Goswami A, Borah A, Kalia K, Dave KR, Bhattacharya P. Molecular Pathogenesis and Interventional Strategies for Alzheimer's Disease: Promises and Pitfalls. ACS Pharmacol Transl Sci 2020; 3:472-488. [PMID: 32566913 DOI: 10.1021/acsptsci.9b00104] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Indexed: 12/16/2022]
Abstract
Alzheimer's disease (AD) is a debilitating disorder characterized by age-related dementia, which has no effective treatment to date. β-Amyloid depositions and hyperphosphorylated tau proteins are the main pathological hallmarks, along with oxidative stress, N-methyl-d-aspartate (NMDA) receptor-mediated excitotoxicity, and low levels of acetylcholine. Current pharmacotherapy for AD only provides symptomatic relief and limited improvement in cognitive functions. Many molecules have been explored that show promising outcomes in AD therapy and can regulate cellular survival through different pathways. To have a vivid approach to strategize the treatment regimen, AD physiopathology should be better explained considering diverse etiological factors in conjunction with biochemical disturbances. This Review attempts to discuss different disease modification approaches and address the novel therapeutic targets of AD that might pave the way for new drug discovery using the well-defined targets for therapy of the disease.
Collapse
Affiliation(s)
- Shashikala Bhute
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Deepaneeta Sarmah
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Aishika Datta
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Pallavi Rane
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Amit Shard
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Avirag Goswami
- Department of Neurology, Albert Einstein Medical Center, Philadelphia, Pennsylvania 19141, United States
| | - Anupom Borah
- Department of Life Science and Bioinformatics, Assam University, Silchar, Assam-788011, India
| | - Kiran Kalia
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| | - Kunjan R Dave
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Pallab Bhattacharya
- Department of Pharmacology and Toxicology,National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar-382355, Gujarat, India
| |
Collapse
|
16
|
Zaramella P, Munari F, Stocchero M, Molon B, Nardo D, Priante E, Tosato F, Bonadies L, Viola A, Baraldi E. Innate immunity ascertained from blood and tracheal aspirates of preterm newborn provides new clues for assessing bronchopulmonary dysplasia. PLoS One 2019; 14:e0221206. [PMID: 31483807 PMCID: PMC6726193 DOI: 10.1371/journal.pone.0221206] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 07/19/2019] [Indexed: 12/23/2022] Open
Abstract
Aim The study aimed to establish how granulocytes, monocytes and macrophages contribute to the development of bronchopulmonary dysplasia (BPD). Materials and methods Study A: samples of blood and tracheal aspirates (TAs) collected from preterm newborn infants during the first 3 days of life were investigated by flow cytometry, and testing for white blood cells (WBCs), neutrophils and neutrophil extracellular traps (NETs). Maternal blood samples were also collected. Study B: data from previously-tested samples of TAs collected from preterm newborn infants were re-analyzed in the light of the findings in the new cohort. Results Study A: 39 preterm newborn infants were studied. A moderate correlation emerged between maternal WBCs and neutrophils and those of their newborn in the first 3 days of life. WBCs and neutrophils correlated in the newborn during the first 8 days of life. Decision rules based on birth weight (BW) and gestational age (GA) can be used to predict bronchopulmonary dysplasia (BPD). Neutrophil levels were lower in the TAs from the newborn with the lowest GAs and BWs. Study B: after removing the effect of GA on BPD development, previously-tested newborn were matched by GA. Monocyte phenotype 1 (Mon1) levels were lower in the blood of newborn with BPD, associated with a higher ratio of Monocyte phenotype 3 (Mon3) to Mon1. Newborn infants from mothers with histological chorioamnionitis (HCA) had lower levels of classically-activated macrophages (M1) and higher levels of alternatively-activated macrophages (M2) in their TAs than newborn infants from healthy mothers. Conclusion Immune cell behavior in preterm newborn infants was examined in detail. Surprisingly, neutrophil levels were lower in TAs from the newborn with the lowest GA and BW, and no correlation emerged between the neutrophil and NET levels in TAs and the other variables measured. Interestingly, monocyte phenotype seemed to influence the onset of BPD. The rise in the ratio of Mon 3 to Mon 1 could contribute to endothelial dysfunction in BPD.
Collapse
Affiliation(s)
- Patrizia Zaramella
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, Via Giustiniani, Padova, Italy
- * E-mail:
| | - Fabio Munari
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Pediatric Research Institute (IRP), Città della Speranza Foundation, Padova, Italy
| | - Matteo Stocchero
- Pediatric Research Institute (IRP), Città della Speranza Foundation, Padova, Italy
| | - Barbara Molon
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Pediatric Research Institute (IRP), Città della Speranza Foundation, Padova, Italy
| | - Daniel Nardo
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, Via Giustiniani, Padova, Italy
| | - Elena Priante
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, Via Giustiniani, Padova, Italy
| | - Francesca Tosato
- Department of Laboratory Medicine, Padova University Hospital, Padova, Italy
| | - Luca Bonadies
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, Via Giustiniani, Padova, Italy
| | - Antonella Viola
- Department of Biomedical Sciences, University of Padova, Padova, Italy
- Pediatric Research Institute (IRP), Città della Speranza Foundation, Padova, Italy
| | - Eugenio Baraldi
- Neonatal Intensive Care Unit, Department of Women’s and Children’s Health, Padova University Hospital, Via Giustiniani, Padova, Italy
- Pediatric Research Institute (IRP), Città della Speranza Foundation, Padova, Italy
| |
Collapse
|
17
|
Zaytseva D, Allawala A, Franco JA, Putnam S, Abtahie AM, Bubalo N, Criddle CR, Nguyen TA, Nguyen P, Padmanabhan S, Sanghera P, Bremer M, Abramson T, Wilkinson KA. Lipopolysaccharide-induced inflammation does not alter muscle spindle afferent mechanosensation or sensory integration in the spinal cord of adult mice. Physiol Rep 2018; 6:e13812. [PMID: 30178608 PMCID: PMC6121120 DOI: 10.14814/phy2.13812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 06/25/2018] [Accepted: 07/05/2018] [Indexed: 11/24/2022] Open
Abstract
Inflammation is known to alter nervous system function, but its effect on muscle spindle afferent mechanosensation and sensory integration in the spinal cord has not been well studied. We tested the hypothesis that systemic inflammation induced by an intraperitoneal injection of the endotoxin lipopolysaccharide (LPS; 7.5 × 105 endotoxin units/kg 18 h before experiment) would alter muscle spindle afferent mechanosensation and spinal cord excitability to Group Ia input in male and female adult C57Bl/6 mice. LPS injection caused a systemic immune response, evidenced by decreased white blood cell, monocyte, and lymphocyte concentrations in the blood, increased blood granulocyte concentration, and body weight loss. The immune response in both sexes was qualitatively similar. We used an in vitro muscle-nerve preparation to assay muscle spindle afferent response to stretch and vibration. LPS injection did not significantly change the response to stretch or vibration, with the exception of small decreases in the ability to entrain to high-frequency vibration in male mice. Similarly, LPS injection did not alter spinal cord excitability to Group Ia muscle spindle afferent input as measured by the Hoffman's reflex test in anesthetized mice (100 mg/kg ketamine, 10 mg/kg xylazine). Specifically, there were no changes in M or H wave latencies nor in the percentage of motor neurons excited by electrical afferent stimulation (Hmax /Mmax ). Overall, we found no major alterations in muscle proprioceptor function or sensory integration following exposure to LPS at a dose and time course that causes changes in nociceptor function and central processing.
Collapse
Affiliation(s)
- Dasha Zaytseva
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | - Anusha Allawala
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | - Joy A. Franco
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | - Shea Putnam
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | - Adam M. Abtahie
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | - Nina Bubalo
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | - Connor R. Criddle
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | - Tuan A. Nguyen
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
- Abbvie BiotherapeuticsRedwood CityCalifornia
| | - Peter Nguyen
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | | | - Puneet Sanghera
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | - Martina Bremer
- Department of Mathematics & StatisticsSan José State UniversitySan JoseCalifornia
| | - Tzvia Abramson
- Department of Biological SciencesSan José State UniversitySan JoseCalifornia
| | | |
Collapse
|
18
|
Impact of obesity on autoimmune arthritis and its cardiovascular complications. Autoimmun Rev 2018; 17:821-835. [PMID: 29885537 PMCID: PMC9996646 DOI: 10.1016/j.autrev.2018.02.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 02/25/2018] [Indexed: 02/06/2023]
Abstract
Obesity can instigate and sustain a systemic low-grade inflammatory environment that can amplify autoimmune disorders and their associated comorbidities. Metabolic changes and inflammatory factors produced by the adipose tissue have been reported to aggravate autoimmunity and predispose the patient to cardiovascular disease (CVD) and metabolic comorbidities. Rheumatoid arthritis (RA) and psoriatic arthritis (PsA) are autoimmune arthritic diseases, often linked with altered body mass index (BMI). Severe joint inflammation and bone destruction have a debilitating impact on the patient's life; there is also a staggering risk of cardiovascular morbidity and mortality. Furthermore, these patients are at risk of developing metabolic symptoms, including insulin resistance resulting in type 2 diabetes mellitus (T2DM). In addition, arthritis severity, progression and response to therapy can be markedly affected by the patient's BMI. Hence, a complex integrative pathogenesis interconnects autoimmunity with metabolic and cardiovascular disorders. This review aims to shed light on the network that connects obesity with RA, PsA, systemic lupus erythematosus and Sjӧgren's syndrome. We have focused on clarifying the mechanism by which obesity affects different cell types, inflammatory factors and traditional therapies in these autoimmune disorders. We conclude that to further optimize arthritis therapy and to prevent CVD, it is imperative to uncover the intricate relation between obesity and arthritis pathology.
Collapse
|
19
|
Chen W, Xu Y, Zhong J, Wang H, Weng M, Cheng Q, Wu Q, Sun Z, Jiang H, Zhu M, Ren Y, Xu P, Chen J, Miao C. MFHAS1 promotes colorectal cancer progress by regulating polarization of tumor-associated macrophages via STAT6 signaling pathway. Oncotarget 2018; 7:78726-78735. [PMID: 27783989 PMCID: PMC5346672 DOI: 10.18632/oncotarget.12807] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 10/06/2016] [Indexed: 02/07/2023] Open
Abstract
Malignant fibrous histiocytoma amplified sequence 1 (MFHAS1) is a predicted oncoprotein that demonstrates tumorigenic activity in vivo; however, the mechanisms involved are unknown. Macrophages are divided into the pro-inflammatory M1 and anti-inflammatory/protumoral M2 subtypes. Tumor cells can induce M2 polarization of tumor-associated macrophages (TAMs) to promote metastasis; but the underlying pathways require to be elucidated. In this study, we detected a positive association between MFHAS1 expression in TAMs and human colorectal cancer (CRC) TNM stage. Supernatant of CT26 murine CRC cells induced MFHAS1 expression in RAW264.7 murine macrophages. Additionally, CT26 supernatant induced the M2 marker CD206 and activated the pro-M2 STAT6 and KLF4 signaling in control but not MFHAS1-silenced RAW264.7 macrophages. Moreover, supernatant of control, but not MFHAS1-silenced macrophages promoted CT26 cell proliferation, migration and epithelial-mesenchymal transition. Compared with control macrophages, MFHAS1-silenced macrophages showed significantly reduced protumoral effects in vivo. Together, these results suggested that CRC cells induce M2 polarization of TAMs through MFHAS1 induction and subsequent STAT6 and KLF4 activation to promote CRC progress. Finally, similar to CT26 supernatant stimulation, peroxisome proliferator-activated receptor-γ (PPARγ) activation by rosiglitazone induced M2 polarization of RAW264.7 macrophages through MFHAS1-dependent pathway. Our results highlight the role of MFHAS1 as a regulator of macrophages polarization and CRC progress.
Collapse
Affiliation(s)
- Wankun Chen
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yajun Xu
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jing Zhong
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Huihui Wang
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Meilin Weng
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qian Cheng
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qichao Wu
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhirong Sun
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hui Jiang
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Minmin Zhu
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yu Ren
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Pingbo Xu
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jiawei Chen
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Changhong Miao
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| |
Collapse
|
20
|
Goundry A, Romano A, Lima APCA, Mottram JC, Myburgh E. Inhibitor of serine peptidase 2 enhances Leishmania major survival in the skin through control of monocytes and monocyte-derived cells. FASEB J 2018; 32:1315-1327. [PMID: 29097502 PMCID: PMC5892728 DOI: 10.1096/fj.201700797r] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Leishmania major is the causative agent of the neglected tropical disease, cutaneous leishmaniasis. In the mouse, protective immunity to Leishmania is associated with inflammatory responses. Here, we assess the dynamics of the inflammatory responses at the lesion site during experimental long-term, low-dose intradermal infection of the ear, employing noninvasive imaging and genetically modified L. major. Significant infiltrates of neutrophils and monocytes occurred at 1-4 d and 2-4 wk, whereas dermal macrophage and dendritic cell (DC) numbers were only slightly elevated in the first days. Quantitative whole-body bioluminescence imaging of myeloperoxidase activity and the quantification of parasite loads indicated that the Leishmania virulence factor, inhibitor of serine peptidase 2 (ISP2), is required to modulate phagocyte activation and is important for parasite survival at the infection site. ISP2 played a role in the control of monocyte, monocyte-derived macrophage, and monocyte-derived DC (moDC) influx, and was required to reduce iNOS expression in monocytes, monocyte-derived cells, and dermal DCs; the expression of CD80 in moDCs; and levels of IFN-γ in situ. Our findings indicate that the increased survival of L. major in the dermis during acute infection is associated with the down-regulation of inflammatory monocytes and monocyte-derived cells via ISP2.-Goundry, A., Romano, A., Lima, A. P. C. A., Mottram, J. C., Myburgh, E. Inhibitor of serine peptidase 2 enhances Leishmania major survival in the skin through control of monocytes and monocyte-derived cells.
Collapse
Affiliation(s)
- Amy Goundry
- Wellcome Centre for Molecular Parasitology, Institute of Infection, Immunity, and Inflammation, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Department of Biology, Centre for Immunology and Infection, University of York, York, United Kingdom.,Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Audrey Romano
- Department of Biology, Centre for Immunology and Infection, University of York, York, United Kingdom
| | - Ana Paula C A Lima
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jeremy C Mottram
- Wellcome Centre for Molecular Parasitology, Institute of Infection, Immunity, and Inflammation, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Department of Biology, Centre for Immunology and Infection, University of York, York, United Kingdom
| | - Elmarie Myburgh
- Wellcome Centre for Molecular Parasitology, Institute of Infection, Immunity, and Inflammation, College of Medical, Veterinary, and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Department of Biology, Centre for Immunology and Infection, University of York, York, United Kingdom
| |
Collapse
|
21
|
Mitra S, Schiller D, Anderson C, Gamboni F, D’Alessandro A, Kelher M, Silliman CC, Banerjee A, Jones KL. Hypertonic saline attenuates the cytokine-induced pro-inflammatory signature in primary human lung epithelia. PLoS One 2017; 12:e0189536. [PMID: 29253007 PMCID: PMC5734749 DOI: 10.1371/journal.pone.0189536] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 11/27/2017] [Indexed: 11/19/2022] Open
Abstract
Trauma/hemorrhagic shock is a complex physiological phenomenon that leads to dysregulation of many molecular pathways. For over a decade, hypertonic saline (HTS) has been used as an alternative resuscitation fluid in the setting of trauma/hemorrhagic shock. In addition to restoring circulating volume within the vascular space, studies have shown a positive immunomodulatory effect of HTS. Targeted studies have shown that HTS affects the transcription of several pro-inflammatory cytokines by inhibiting the NF-κB-IκB pathway in model cell lines and rats. However, few studies have been undertaken to assess the unbiased effects of HTS on the whole transcriptome. This study was designed to interrogate the global transcriptional responses induced by HTS and provides insight into the underlying molecular mechanisms and pathways affected by HTS. In this study, RNA sequencing was employed to explore early changes in transcriptional response, identify key mediators, signaling pathways, and transcriptional modules that are affected by HTS in the presence of a strong inflammatory stimulus. Our results suggest that primary human small airway lung epithelial cells (SAECS) exposed to HTS in the presence and absence of a strong pro-inflammatory stimulus exhibit very distinct effects on cellular response, where HTS is highly effective in attenuating cytokine-induced pro-inflammatory responses via mechanisms that involve transcriptional regulation of inflammation which is cell type and stimulus specific. HTS is a highly effective anti-inflammatory agent that inhibits the chemotaxis of leucocytes towards a pro-inflammatory gradient and may attenuate the progression of both the innate and adaptive immune response.
Collapse
Affiliation(s)
- Sanchayita Mitra
- Department of Surgery/Trauma Research Center, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
| | - Daran Schiller
- Department of Surgery/Trauma Research Center, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
| | - Cameron Anderson
- Department of Surgery/Trauma Research Center, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
| | - Fabia Gamboni
- Department of Surgery/Trauma Research Center, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
| | - Angelo D’Alessandro
- Department of Surgery/Trauma Research Center, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
| | - Margeurite Kelher
- Department of Surgery/Trauma Research Center, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
- Bonfils Blood Center, Denver, Colorado, United States of America
| | - Christopher C. Silliman
- Department of Surgery/Trauma Research Center, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
- Bonfils Blood Center, Denver, Colorado, United States of America
| | - Anirban Banerjee
- Department of Surgery/Trauma Research Center, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
| | - Kenneth L. Jones
- Dept. of Pediatrics, University of Colorado Denver, School of Medicine, Aurora, Colorado, United States of America
- * E-mail:
| |
Collapse
|
22
|
He X, Zhang Y, Zhu A, Zeng K, Zhang X, Gong L, Peng Y, Lai K, Qu S. Suppression of interleukin 17 contributes to the immunomodulatory effects of adipose-derived stem cells in a murine model of systemic lupus erythematosus. Immunol Res 2017; 64:1157-1167. [PMID: 27617336 DOI: 10.1007/s12026-016-8866-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Due to roles in immunoregulation and low immunogenicity, mesenchymal stem cells have been suggested to be potent regulators of the immune response and may represent promising treatments for autoimmune disease. Adipose-derived stem cells (ADSCs), stromal cells derived from adipose tissue, were investigated with allogeneic ADSCs in B6.MRL/lpr mice, a murine model of systemic lupus erythematosus (SLE). We intravenously injected allogeneic ADSCs into SLE mice after disease onset and report that ADSCs reduced anti-ds DNA antibodies in serum and proteinuria in SLE mice. Also, ADSCs decreased IL-17 and IL-6 expression in serum of SLE mice. ADSCs alleviated renal damage and inflammatory cell infiltration and edema of the renal interstitium. Furthermore, ADSCs significantly downregulated renal IL-17 and CD68 expression, suggesting that ADSCs suppressed renal inflammation. ADSCs also decreased IL-17 mRNA expression and increased Foxp3, ROR-γt and miR-23b mRNA expression in renal tissue in SLE mice. ADSCs reduced renal protein expression of TAB 2 and IKK-α in SLE mice. Thus, ADSCs may be a novel potential therapy for treating SLE.
Collapse
Affiliation(s)
- Xiaoliang He
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China.,Department of Blood Transfusion, The Fifth Affiliated Hospital, Southern Medical University, Guangzhou, 510900, People's Republic of China
| | - Yunlong Zhang
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China.,Department of Blood Transfusion, The Fifth Affiliated Hospital, Southern Medical University, Guangzhou, 510900, People's Republic of China
| | - Ai Zhu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Kang Zeng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Xiuping Zhang
- Teaching Center of Experimental Medicine, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Li Gong
- Experimental Animal Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Yusheng Peng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China
| | - Kuan Lai
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, People's Republic of China.
| | - Shaogang Qu
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, People's Republic of China. .,Department of Blood Transfusion, The Fifth Affiliated Hospital, Southern Medical University, Guangzhou, 510900, People's Republic of China.
| |
Collapse
|
23
|
Immuno-Stimulatory Peptides as a Potential Adjunct Therapy against Intra-Macrophagic Pathogens. Molecules 2017; 22:molecules22081297. [PMID: 28777342 PMCID: PMC6152048 DOI: 10.3390/molecules22081297] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/03/2017] [Accepted: 08/03/2017] [Indexed: 01/09/2023] Open
Abstract
The treatment of infectious diseases is increasingly prone to failure due to the rapid spread of antibiotic-resistant pathogens. Antimicrobial peptides (AMPs) are natural components of the innate immune system of most living organisms. Their capacity to kill microbes through multiple mechanisms makes the development of bacterial resistance less likely. Additionally, AMPs have important immunomodulatory effects, which critically contribute to their role in host defense. In this paper, we review the most recent evidence for the importance of AMPs in host defense against intracellular pathogens, particularly intra-macrophagic pathogens, such as mycobacteria. Cathelicidins and defensins are reviewed in more detail, due to the abundance of studies on these molecules. The cell-intrinsic as well as the systemic immune-related effects of the different AMPs are discussed. In the face of the strong potential emerging from the reviewed studies, the prospects for future use of AMPs as part of the therapeutic armamentarium against infectious diseases are presented.
Collapse
|
24
|
Park J, Lee JW, Cooper SC, Broxmeyer HE, Cannon JR, Kim CH. Parkinson disease-associated LRRK2 G2019S transgene disrupts marrow myelopoiesis and peripheral Th17 response. J Leukoc Biol 2017; 102:1093-1102. [PMID: 28751472 DOI: 10.1189/jlb.1a0417-147rr] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/06/2017] [Accepted: 07/07/2017] [Indexed: 12/12/2022] Open
Abstract
Parkinson's disease (PD) is a neurodegenerative disease, whereas Crohn's disease is an inflammatory bowel disease. Interestingly, polymorphisms in the LRRK2 gene have been identified as risk factors for both diseases. LRRK2 G2019S is the most prevalent mutation found in PD. To gain insights into the role of the LRRK2 G2019S gene on the development and activation of the immune system in the brain-gut axis, we investigated the effect of LRRK2 G2019S on bone marrow myeloid progenitors and myeloid cell function in the periphery. We used bacterial artificial chromosome transgenic rats harboring the human LRRK2 G2019S gene. LRRK2 G2019S transgene decreased the numbers of monocytic and granulocytic progenitors in the bone marrow. However, the numbers of peripheral, immature myeloid cells with suppressive activity were increased in the gut and blood circulation of LRRK2 G2019S compared with control rats in various acute and chronic inflammatory responses. In inflammatory conditions, Th17 cell activity was suppressed, but tissue-associated phylum Bacteroidetes was abnormally increased in the intestine of LRRK2 G2019S rats. The abnormally expanded myeloid cells because of the LRRK2 G2019S gene were highly suppressive on Th17 cell differentiation. Moreover, we found that inhibition of LRRK2 kinase affects myeloid progenitors and myeloid cell differentiation. Taken together, the results indicate that abnormal LRRK2 activity can alter bone marrow myelopoiesis, peripheral myeloid cell differentiation, and intestinal immune homeostasis. These findings may have ramifications in immune and inflammatory responses in patients with LRRK2 abnormalities.
Collapse
Affiliation(s)
- Jeongho Park
- Laboratory of Immunology and Hematopoiesis, Department of Comparative Pathobiology, Purdue University, West Lafayette, Indiana, USA
| | - Jang-Won Lee
- School of Health Sciences, Purdue University, West Lafayette, Indiana, USA
| | - Scott C Cooper
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Hal E Broxmeyer
- Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Jason R Cannon
- School of Health Sciences, Purdue University, West Lafayette, Indiana, USA.,Purdue Institute of Neuroscience, Purdue University, West Lafayette, Indiana, USA
| | - Chang H Kim
- Laboratory of Immunology and Hematopoiesis, Department of Comparative Pathobiology, Purdue University, West Lafayette, Indiana, USA; .,Department of Biological Sciences, Purdue University, West Lafayette, Indiana, USA.,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA.,Purdue Center for Cancer Research, Purdue University, West Lafayette, Indiana, USA; and.,Purdue Institute of Inflammation, Immunology and Infectious Diseases, Purdue University, West Lafayette, Indiana, USA
| |
Collapse
|
25
|
Abstract
Tuberculosis remains one of the greatest threats to human health. The causative bacterium, Mycobacterium tuberculosis, is acquired by the respiratory route. It is exquisitely adapted to humans and is a prototypic intracellular pathogen of macrophages, with alveolar macrophages being the primary conduit of infection and disease. However, M. tuberculosis bacilli interact with and are affected by several soluble and cellular components of the innate immune system which dictate the outcome of primary infection, most commonly a latently infected healthy human host, in whom the bacteria are held in check by the host immune response within the confines of tissue granuloma, the host histopathologic hallmark. Such individuals can develop active TB later in life with impairment in the immune system. In contrast, in a minority of infected individuals, the early host immune response fails to control bacterial growth, and progressive granulomatous disease develops, facilitating spread of the bacilli via infectious aerosols. The molecular details of the M. tuberculosis-host innate immune system interaction continue to be elucidated, particularly those occurring within the lung. However, it is clear that a number of complex processes are involved at the different stages of infection that may benefit either the bacterium or the host. In this article, we describe a contemporary view of the molecular events underlying the interaction between M. tuberculosis and a variety of cellular and soluble components and processes of the innate immune system.
Collapse
|
26
|
Pedraza-Zamora CP, Delgado-Domínguez J, Zamora-Chimal J, Becker I. Th17 cells and neutrophils: Close collaborators in chronicLeishmania mexicanainfections leading to disease severity. Parasite Immunol 2017; 39. [DOI: 10.1111/pim.12420] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 02/03/2017] [Indexed: 12/21/2022]
Affiliation(s)
- C. P. Pedraza-Zamora
- Facultad de Medicina; Unidad de Investigación en Medicina Experimental; Universidad Nacional Autónoma de México (UNAM); Hospital General de México; Ciudad de México México
| | - J. Delgado-Domínguez
- Facultad de Medicina; Unidad de Investigación en Medicina Experimental; Universidad Nacional Autónoma de México (UNAM); Hospital General de México; Ciudad de México México
| | - J. Zamora-Chimal
- Facultad de Medicina; Unidad de Investigación en Medicina Experimental; Universidad Nacional Autónoma de México (UNAM); Hospital General de México; Ciudad de México México
| | - I. Becker
- Facultad de Medicina; Unidad de Investigación en Medicina Experimental; Universidad Nacional Autónoma de México (UNAM); Hospital General de México; Ciudad de México México
| |
Collapse
|
27
|
McCoy CJ, Reaves BJ, Giguère S, Coates R, Rada B, Wolstenholme AJ. Human Leukocytes Kill Brugia malayi Microfilariae Independently of DNA-Based Extracellular Trap Release. PLoS Negl Trop Dis 2017; 11:e0005279. [PMID: 28045905 PMCID: PMC5234842 DOI: 10.1371/journal.pntd.0005279] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 01/13/2017] [Accepted: 12/21/2016] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Wuchereria bancrofti, Brugia malayi and Brugia timori infect over 100 million people worldwide and are the causative agents of lymphatic filariasis. Some parasite carriers are amicrofilaremic whilst others facilitate mosquito-based disease transmission through blood-circulating microfilariae (Mf). Recent findings, obtained largely from animal model systems, suggest that polymorphonuclear leukocytes (PMNs) contribute to parasitic nematode-directed type 2 immune responses. When exposed to certain pathogens PMNs release extracellular traps (NETs) in the form of chromatin loaded with various antimicrobial molecules and proteases. PRINCIPAL FINDINGS In vitro, PMNs expel large amounts of NETs that capture but do not kill B. malayi Mf. NET morphology was confirmed by fluorescence imaging of worm-NET aggregates labelled with DAPI and antibodies to human neutrophil elastase, myeloperoxidase and citrullinated histone H4. A fluorescent, extracellular DNA release assay was used to quantify and observe Mf induced NETosis over time. Blinded video analyses of PMN-to-worm attachment and worm survival during Mf-leukocyte co-culture demonstrated that DNase treatment eliminates PMN attachment in the absence of serum, autologous serum bolsters both PMN attachment and PMN plus peripheral blood mononuclear cell (PBMC) mediated Mf killing, and serum heat inactivation inhibits both PMN attachment and Mf killing. Despite the effects of heat inactivation, the complement inhibitor compstatin did not impede Mf killing and had little effect on PMN attachment. Both human PMNs and monocytes, but not lymphocytes, are able to kill B. malayi Mf in vitro and NETosis does not significantly contribute to this killing. Leukocytes derived from presumably parasite-naïve U.S. resident donors vary in their ability to kill Mf in vitro, which may reflect the pathological heterogeneity associated with filarial parasitic infections. CONCLUSIONS/SIGNIFICANCE Human innate immune cells are able to recognize, attach to and kill B. malayi microfilariae in an in vitro system. This suggests that, in vivo, the parasites can evade this ability, or that only some human hosts support an infection with circulating Mf.
Collapse
Affiliation(s)
- Ciaran J. McCoy
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States of America
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States of America
| | - Barbara J. Reaves
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States of America
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States of America
| | - Steeve Giguère
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA, United States of America
| | - Ruby Coates
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States of America
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States of America
- Department of Biology & Biochemistry, University of Bath, Bath, United Kingdom
| | - Balázs Rada
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States of America
| | - Adrian J. Wolstenholme
- Department of Infectious Diseases, College of Veterinary Medicine, University of Georgia, Athens, GA, United States of America
- Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, GA, United States of America
| |
Collapse
|
28
|
Tan SY, Weninger W. Neutrophil migration in inflammation: intercellular signal relay and crosstalk. Curr Opin Immunol 2016; 44:34-42. [PMID: 27951434 DOI: 10.1016/j.coi.2016.11.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 11/21/2016] [Indexed: 12/18/2022]
Abstract
Neutrophils are innate effector cells armed with a potent machinery to combat damage and infection within tissues. Their ability to rapidly respond to danger signals and mobilise is crucial to their role. After extravasation, neutrophil populations often exhibit swarming behaviour. Swarming occurs in distinct phases and is coordinated via inter-neutrophil signal relay in the form of small molecule mediators. Neutrophils also engage in multi-dimensional crosstalk with tissue-resident cells and incoming leukocytes in the inflammatory milieu. The complexity of neutrophil crosstalk with other innate immune cells mirrors that of the adaptive immune system, with rudimentary features of 'priming' and 'licensing'. We review recent findings relating to the migration and intercellular crosstalks of neutrophils in the initiation and resolution of inflammation.
Collapse
Affiliation(s)
- Sioh-Yang Tan
- Immune Imaging Program, Centenary Institute for Cancer Medicine and Cell Biology, Newtown, NSW 2042, Australia; The University of Sydney Medical School, NSW 2006, Australia.
| | - Wolfgang Weninger
- Immune Imaging Program, Centenary Institute for Cancer Medicine and Cell Biology, Newtown, NSW 2042, Australia; The University of Sydney Medical School, NSW 2006, Australia; Department of Dermatology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia.
| |
Collapse
|
29
|
Espaillat MP, Kew RR, Obeid LM. Sphingolipids in neutrophil function and inflammatory responses: Mechanisms and implications for intestinal immunity and inflammation in ulcerative colitis. Adv Biol Regul 2016; 63:140-155. [PMID: 27866974 DOI: 10.1016/j.jbior.2016.11.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 11/10/2016] [Accepted: 11/12/2016] [Indexed: 02/06/2023]
Abstract
Bioactive sphingolipids are regulators of immune cell function and play critical roles in inflammatory conditions including ulcerative colitis. As one of the major forms of inflammatory bowel disease, ulcerative colitis pathophysiology is characterized by an aberrant intestinal inflammatory response that persists causing chronic inflammation and tissue injury. Innate immune cells play an integral role in normal intestinal homeostasis but their dysregulation is thought to contribute to the pathogenesis of ulcerative colitis. In particular, neutrophils are key effector cells and are first line defenders against invading pathogens. While the activity of neutrophils in the intestinal mucosa is required for homeostasis, regulatory mechanisms are equally important to prevent unnecessary activation. In ulcerative colitis, unregulated neutrophil inflammatory mechanisms promote tissue injury and loss of homeostasis. Aberrant neutrophil function represents an early checkpoint in the detrimental cycle of chronic intestinal inflammation; thus, dissecting the mechanisms by which these cells are regulated both before and during disease is essential for understanding the pathogenesis of ulcerative colitis. We present an analysis of the role of sphingolipids in the regulation of neutrophil function and the implication of this relationship in ulcerative colitis.
Collapse
Affiliation(s)
- Mel Pilar Espaillat
- Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, NY 11794, USA; Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Richard R Kew
- Department of Pathology, Stony Brook University, Stony Brook, NY 11794, USA
| | - Lina M Obeid
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; Northport Veterans Affairs Medical Center, Northport, NY 11768, USA.
| |
Collapse
|
30
|
Meshkani R, Vakili S. Tissue resident macrophages: Key players in the pathogenesis of type 2 diabetes and its complications. Clin Chim Acta 2016; 462:77-89. [PMID: 27570063 DOI: 10.1016/j.cca.2016.08.015] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 08/21/2016] [Accepted: 08/23/2016] [Indexed: 02/07/2023]
Abstract
There is increasing evidence showing that chronic inflammation is an important pathogenic mediator of the development of type 2 diabetes (T2D). It is now generally accepted that tissue-resident macrophages play a major role in regulation of tissue inflammation. T2D-associated inflammation is characterized by an increased abundance of macrophages in different tissues along with production of inflammatory cytokines. The complexity of macrophage phenotypes has been reported from different human tissues. Macrophages exhibit a phenotypic range that is intermediate between two extremes, M1 (pro-inflammatory) and M2 (anti-inflammatory). Cytokines and chemokines produced by macrophages generate local and systemic inflammation and this condition leads to pancreatic β-cell dysfunction and insulin resistance in liver, adipose and skeletal muscle tissues. Data from human and animal studies also suggest that macrophages contribute to T2D complications such as nephropathy, neuropathy, retinopathy and cardiovascular diseases through cell-cell interactions and the release of pro-inflammatory cytokines, chemokines, and proteases to induce inflammatory cell recruitment, cell apoptosis, angiogenesis, and matrix protein remodeling. In this review we focus on the functions of macrophages and the importance of these cells in the pathogenesis of T2D. In addition, the contribution of macrophages to diabetes complications such as nephropathy, neuropathy, retinopathy and cardiovascular diseases is discussed.
Collapse
Affiliation(s)
- Reza Meshkani
- Department of Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran.
| | - Sanaz Vakili
- Department of Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran
| |
Collapse
|
31
|
Jang TY, Jung AY, Kim YH. Effect of Long-Term Antiorthostatic Suspension in a Murine Model of Acute Lung Injury. Clin Exp Otorhinolaryngol 2016; 9:332-338. [PMID: 27334509 PMCID: PMC5115144 DOI: 10.21053/ceo.2015.01599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 11/25/2015] [Accepted: 12/22/2015] [Indexed: 11/25/2022] Open
Abstract
Objectives Antiorthostatic suspension (AOS) is ground-based model of simulated microgravity. There is still no study about the effect of long-term microgravity on the clinical course of acute lung injury. We evaluated the effect of simulated microgravity using AOS in a murine model of acute lung injury by lipopolysaccharide (LPS). Methods Thirty BALB/c mice were used. During 4 weeks, mice were equally allocated to control (free movement), restraint (tail suspended, but hindlimbs not unloaded), and AOS group (hindlimb unloaded). After then, mice got intranasal challenge with LPS (20 mg/kg, 50 μL). We measured: weight gain before and after AOS, the number of inflammatory cells and titers of cytokines (interleukin [IL]-1β, IL-6, IL-10, tumor necrosis factor-α, and interferon-γ) in bronchoalveolar lavage (BAL) fluid, titer of myeloperoxidase (MPO) in serum and lung homogenate, and histopathologic examination of lung tissue. Results AOS group had significant weight loss compared to control and restraint group (P<0.001). AOS group also showed significantly decreased lymphocytes (P=0.023) compared to control group. In AOS group, titer for IL-1β in BAL fluid was significantly lower than restraint group (P=0.049). Titer for serum MPO was significantly decreased in AOS group compared to restraint group (P=0.004). However, there was no significant difference of MPO titers in lung tissue between groups. Histopathologic examination of lung tissue revealed no significant difference in the degree of pulmonary infiltration between restraint and AOS group. Conclusion In spite of modest anti-inflammatory effect, prolonged AOS caused no significant change in LPS-induced pulmonary inflammation.
Collapse
Affiliation(s)
- Tae Young Jang
- Department of Otorhinolaryngology-Head and Neck Surgery, Inha University School of Medicine, Incheon, Korea
| | - Ah-Yeoun Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Inha University School of Medicine, Incheon, Korea
| | - Young Hyo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Inha University School of Medicine, Incheon, Korea
| |
Collapse
|
32
|
Kohler TP, Scholz A, Kiachludis D, Hammerschmidt S. Induction of Central Host Signaling Kinases during Pneumococcal Infection of Human THP-1 Cells. Front Cell Infect Microbiol 2016; 6:48. [PMID: 27200303 PMCID: PMC4844997 DOI: 10.3389/fcimb.2016.00048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 04/13/2016] [Indexed: 11/13/2022] Open
Abstract
Streptococcus pneumoniae is a widespread colonizer of the mucosal epithelia of the upper respiratory tract of human. However, pneumococci are also responsible for numerous local as well as severe systemic infections, especially in children under the age of five and the elderly. Under certain conditions, pneumococci are able to conquer the epithelial barrier, which can lead to a dissemination of the bacteria into underlying tissues and the bloodstream. Here, specialized macrophages represent an essential part of the innate immune system against bacterial intruders. Recognition of the bacteria through different receptors on the surface of macrophages leads thereby to an uptake and elimination of bacteria. Accompanied cytokine release triggers the migration of leukocytes from peripheral blood to the site of infection, where monocytes differentiate into mature macrophages. The rearrangement of the actin cytoskeleton during phagocytosis, resulting in the engulfment of bacteria, is thereby tightly regulated by receptor-mediated phosphorylation cascades of different protein kinases. The molecular cellular processes including the modulation of central protein kinases are only partially solved. In this study, the human monocytic THP-1 cell line was used as a model system to examine the activation of Fcγ and complement receptor-independent signal cascades during infection with S. pneumoniae. Pneumococci cultured either in chemically defined or complex medium showed no significant differences in pneumococcal phagocytosis by phorbol 12-myristate 13-acetate (PMA) differentiated THP-1 cells. Double immuno-fluorescence microscopy and antibiotic protection assays demonstrated a time-dependent uptake and killing of S. pneumoniae 35A inside of macrophages. Infections of THP-1 cells in the presence of specific pharmacological inhibitors revealed a crucial role of actin polymerization and importance of the phosphoinositide 3-kinase (PI3K) and Protein kinase B (Akt) as well during bacterial uptake. The participation of essential host cell signaling kinases in pneumococcal phagocytosis was deciphered for the kinase Akt, ERK1/2, and p38 and phosphoimmunoblots showed an increased phosphorylation and thus activation upon infection with pneumococci. Taken together, this study deciphers host cell kinases in innate immune cells that are induced upon infection with pneumococci and interfere with bacterial clearance after phagocytosis.
Collapse
Affiliation(s)
- Thomas P Kohler
- Department Genetics of Microorganisms, Interfaculty Institute for Genetics and Functional Genomics, Ernst-Moritz-Arndt Universität Greifswald Greifswald, Germany
| | - Annemarie Scholz
- Department Genetics of Microorganisms, Interfaculty Institute for Genetics and Functional Genomics, Ernst-Moritz-Arndt Universität Greifswald Greifswald, Germany
| | - Delia Kiachludis
- Department Genetics of Microorganisms, Interfaculty Institute for Genetics and Functional Genomics, Ernst-Moritz-Arndt Universität Greifswald Greifswald, Germany
| | - Sven Hammerschmidt
- Department Genetics of Microorganisms, Interfaculty Institute for Genetics and Functional Genomics, Ernst-Moritz-Arndt Universität Greifswald Greifswald, Germany
| |
Collapse
|
33
|
Soleimanpour S, Hassannia T, Motiee M, Amini AA, Rezaee SAR. Fcγ1 fragment of IgG1 as a powerful affinity tag in recombinant Fc-fusion proteins: immunological, biochemical and therapeutic properties. Crit Rev Biotechnol 2016; 37:371-392. [PMID: 27049690 DOI: 10.3109/07388551.2016.1163323] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Affinity tags are vital tools for the production of high-throughput recombinant proteins. Several affinity tags, such as the hexahistidine tag, maltose-binding protein, streptavidin-binding peptide tag, calmodulin-binding peptide, c-Myc tag, glutathione S-transferase and FLAG tag, have been introduced for recombinant protein production. The fragment crystallizable (Fc) domain of the IgG1 antibody is one of the useful affinity tags that can facilitate detection, purification and localization of proteins and can improve the immunogenicity, modulatory effects, physicochemical and pharmaceutical properties of proteins. Fcγ recombinant forms a group of recombinant proteins called Fc-fusion proteins (FFPs). FFPs are widely used in drug discovery, drug delivery, vaccine design and experimental research on receptor-ligand interactions. These fusion proteins have become successful alternatives to monoclonal antibodies for drug developments. In this review, the physicochemical, biochemical, immunological, pharmaceutical and therapeutic properties of recombinant FFPs were discussed as a new generation of bioengineering strategies.
Collapse
Affiliation(s)
- Saman Soleimanpour
- a Microbiology & Virology Research Center, Bu-Ali Research Institute, Mashhad University of Medical Sciences , Mashhad, Iran
| | - Tahereh Hassannia
- b Internal medicine Department, Arash Hospital, the College of Medicine, Tehran University of Medical Sciences , Tehran, Iran
| | - Mahdieh Motiee
- c Inflammation and Inflammatory Diseases Research Center, Medical School, Mashhad University of Medical Sciences , Mashhad, Iran
| | - Abbas Ali Amini
- d Department of Immunology, faculty of medicine, Kurdistan University of Medical Sciences , Sanandaj, Iran
| | - S A R Rezaee
- c Inflammation and Inflammatory Diseases Research Center, Medical School, Mashhad University of Medical Sciences , Mashhad, Iran
| |
Collapse
|
34
|
Abu-Elala NM, Abd-Elsalam RM, Marzouk MS. Molecular and Immunohistochemical Diagnosis of Photobacterium damselaeSubspecies piscicidaDuring Naturally Occurring Disease in Egypt. JOURNAL OF THE WORLD AQUACULTURE SOCIETY 2015; 46:583-595. [DOI: 10.1111/jwas.12237] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Affiliation(s)
- Nermeen M. Abu-Elala
- Department of Fish Diseases and Management, Faculty of Veterinary Medicine; Cairo University; Giza Egypt
| | - Reham M. Abd-Elsalam
- Department of Pathology, Faculty of Veterinary Medicine; Cairo University; Giza Egypt
| | - Mohamed S. Marzouk
- Department of Fish Diseases and Management, Faculty of Veterinary Medicine; Cairo University; Giza Egypt
| |
Collapse
|
35
|
Bhat TA, Panzica L, Kalathil SG, Thanavala Y. Immune Dysfunction in Patients with Chronic Obstructive Pulmonary Disease. Ann Am Thorac Soc 2015; 12 Suppl 2:S169-75. [PMID: 26595735 PMCID: PMC4722840 DOI: 10.1513/annalsats.201503-126aw] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 05/27/2015] [Indexed: 01/09/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a complex chronic disease. Chronic inflammation is the hallmark of COPD, involving the interplay of a wide variety of cells in the lung microenvironment. Cigarette smoke (CS) induces chronic lung inflammation and is considered a key etiological factor in the development and pathogenesis of COPD. Structural and inflammatory cells in the lung respond to CS exposure by releasing proinflammatory mediators that recruit additional inflammatory immune cells, which collectively contribute to the establishment of a chronic inflammatory microenvironment. Chronic inflammation contributes to lung damage, compromises innate and adaptive immune responses, and facilitates the recurrent episodes of respiratory infection that punctuate and further contribute to the pathological manifestations of the stable disease. A number of studies support the conclusion that immune dysfunction leads to exacerbations and disease severity in COPD. Our group has clearly demonstrated that CS exacerbates lung inflammation and compromises immunity to respiratory pathogens in a mouse model of COPD. We have also investigated the phenotype of immune cells in patients with COPD compared with healthy control subjects and found extensive immune dysfunction due to the presence and functional activity of T regulatory cells, CD4(+)PD-1(+) exhausted effector T cells and myeloid-derived suppressor cells. Manipulation of these immunosuppressive networks in COPD could provide a rational strategy to restore functional immune responses, reduce exacerbations, and improve lung function. In this review, we discuss the role of immune dysfunction in COPD that may contribute to recurrent respiratory infections and disease severity.
Collapse
Affiliation(s)
- Tariq A Bhat
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, New York
| | - Louis Panzica
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, New York
| | | | - Yasmin Thanavala
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, New York
| |
Collapse
|
36
|
Zenaro E, Pietronigro E, Della Bianca V, Piacentino G, Marongiu L, Budui S, Turano E, Rossi B, Angiari S, Dusi S, Montresor A, Carlucci T, Nanì S, Tosadori G, Calciano L, Catalucci D, Berton G, Bonetti B, Constantin G. Neutrophils promote Alzheimer's disease-like pathology and cognitive decline via LFA-1 integrin. Nat Med 2015. [PMID: 26214837 DOI: 10.1038/nm.3913] [Citation(s) in RCA: 535] [Impact Index Per Article: 59.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Inflammation is a pathological hallmark of Alzheimer's disease, and innate immune cells have been shown to contribute to disease pathogenesis. In two transgenic models of Alzheimer's disease (5xFAD and 3xTg-AD mice), neutrophils extravasated and were present in areas with amyloid-β (Aβ) deposits, where they released neutrophil extracellular traps (NETs) and IL-17. Aβ42 peptide triggered the LFA-1 integrin high-affinity state and rapid neutrophil adhesion to integrin ligands. In vivo, LFA-1 integrin controlled neutrophil extravasation into the CNS and intraparenchymal motility. In transgenic Alzheimer's disease models, neutrophil depletion or inhibition of neutrophil trafficking via LFA-1 blockade reduced Alzheimer's disease-like neuropathology and improved memory in mice already showing cognitive dysfunction. Temporary depletion of neutrophils for 1 month at early stages of disease led to sustained improvements in memory. Transgenic Alzheimer's disease model mice lacking LFA-1 were protected from cognitive decline and had reduced gliosis. In humans with Alzheimer's disease, neutrophils adhered to and spread inside brain venules and were present in the parenchyma, along with NETs. Our results demonstrate that neutrophils contribute to Alzheimer's disease pathogenesis and cognitive impairment and suggest that the inhibition of neutrophil trafficking may be beneficial in Alzheimer's disease.
Collapse
Affiliation(s)
- Elena Zenaro
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Enrica Pietronigro
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | | | - Gennj Piacentino
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Laura Marongiu
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Simona Budui
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Ermanna Turano
- Department of Neurological and Movement Sciences, Neurology Section, University of Verona, Verona, Italy
| | - Barbara Rossi
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Stefano Angiari
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Silvia Dusi
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Alessio Montresor
- 1] Department of Pathology and Diagnostics, University of Verona, Verona, Italy. [2] The Center for Biomedical Computing (CBMC), University of Verona, Verona, Italy
| | - Tommaso Carlucci
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Sara Nanì
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Gabriele Tosadori
- 1] Department of Pathology and Diagnostics, University of Verona, Verona, Italy. [2] The Center for Biomedical Computing (CBMC), University of Verona, Verona, Italy
| | - Lucia Calciano
- Department of Public Health and Community Medicine, University of Verona, Verona, Italy
| | - Daniele Catalucci
- National Research Council (CNR), Institute of Genetic and Biomedical Research (IRGB), and Humanitas Research Hospital, Milan, Italy
| | - Giorgio Berton
- Department of Pathology and Diagnostics, University of Verona, Verona, Italy
| | - Bruno Bonetti
- Department of Neurological and Movement Sciences, Neurology Section, University of Verona, Verona, Italy
| | - Gabriela Constantin
- 1] Department of Pathology and Diagnostics, University of Verona, Verona, Italy. [2] The Center for Biomedical Computing (CBMC), University of Verona, Verona, Italy
| |
Collapse
|
37
|
Mora-Bau G, Platt AM, van Rooijen N, Randolph GJ, Albert ML, Ingersoll MA. Macrophages Subvert Adaptive Immunity to Urinary Tract Infection. PLoS Pathog 2015; 11:e1005044. [PMID: 26182347 PMCID: PMC4504509 DOI: 10.1371/journal.ppat.1005044] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 06/23/2015] [Indexed: 12/24/2022] Open
Abstract
Urinary tract infection (UTI) is one of the most common bacterial infections with frequent recurrence being a major medical challenge. Development of effective therapies has been impeded by the lack of knowledge of events leading to adaptive immunity. Here, we establish conclusive evidence that an adaptive immune response is generated during UTI, yet this response does not establish sterilizing immunity. To investigate the underlying deficiency, we delineated the naïve bladder immune cell compartment, identifying resident macrophages as the most populous immune cell. To evaluate their impact on the establishment of adaptive immune responses following infection, we measured bacterial clearance in mice depleted of either circulating monocytes, which give rise to macrophages, or bladder resident macrophages. Surprisingly, mice depleted of resident macrophages, prior to primary infection, exhibited a nearly 2-log reduction in bacterial burden following secondary challenge compared to untreated animals. This increased bacterial clearance, in the context of a challenge infection, was dependent on lymphocytes. Macrophages were the predominant antigen presenting cell to acquire bacteria post-infection and in their absence, bacterial uptake by dendritic cells was increased almost 2-fold. These data suggest that bacterial uptake by tissue macrophages impedes development of adaptive immune responses during UTI, revealing a novel target for enhancing host responses to bacterial infection of the bladder. Urinary tract infection is a common infection with a high propensity for recurrence. The majority of infections are caused by uropathogenic E. coli, a growing public health concern with increasing prevalence of antibiotic resistant strains. Finding therapeutic options that circumvent the need for antibiotics, while boosting patients’ immune response to infection is desirable to counteract further increases in antibiotic resistance and to provide long-lasting resistance to infection. Currently, little is known about how adaptive immune responses, which typically prevent recurrent infection in other organs, arise from the bladder during urinary tract infection. Here, we investigated the initial interactions between immune cell populations of the bladder and uropathogenic E. coli, finding that macrophages are the principal cell population to engulf bacteria. Interestingly, these same cells appear to inhibit the development of adaptive immunity to the bacteria, as their depletion, prior to primary infection, results in a stronger immune response during bacterial challenge. We found that in the absence of macrophages, dendritic cells, which are the most potent initiators of adaptive immunity, are able to take up more bacteria for presentation. Our study has revealed a mechanism in which specific immune cells may act in a manner detrimental to host immunity.
Collapse
Affiliation(s)
- Gabriela Mora-Bau
- Unité d'Immunobiologie des Cellules Dendritiques, Department of Immunology, Institut Pasteur and INSERM U818, Paris, France
| | - Andrew M Platt
- Department of Gene and Cell Medicine and the Immunology Institute, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Nico van Rooijen
- Department of Molecular Cell Biology, Free University Medical Center, Amsterdam, The Netherlands
| | - Gwendalyn J Randolph
- Department of Gene and Cell Medicine and the Immunology Institute, Mount Sinai School of Medicine, New York, New York, United States of America
| | - Matthew L Albert
- Unité d'Immunobiologie des Cellules Dendritiques, Department of Immunology, Institut Pasteur and INSERM U818, Paris, France
| | - Molly A Ingersoll
- Unité d'Immunobiologie des Cellules Dendritiques, Department of Immunology, Institut Pasteur and INSERM U818, Paris, France
| |
Collapse
|
38
|
Martinez RM, Pinho-Ribeiro FA, Steffen VS, Caviglione CV, Vignoli JA, Baracat MM, Georgetti SR, Verri WA, Casagrande R. Hesperidin methyl chalcone inhibits oxidative stress and inflammation in a mouse model of ultraviolet B irradiation-induced skin damage. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2015; 148:145-153. [DOI: 10.1016/j.jphotobiol.2015.03.030] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 03/24/2015] [Accepted: 03/26/2015] [Indexed: 12/28/2022]
|
39
|
Ruiz-Miyazawa KW, Pinho-Ribeiro FA, Zarpelon AC, Staurengo-Ferrari L, Silva RL, Alves-Filho JC, Cunha TM, Cunha FQ, Casagrande R, Verri WA. Vinpocetine reduces lipopolysaccharide-induced inflammatory pain and neutrophil recruitment in mice by targeting oxidative stress, cytokines and NF-κB. Chem Biol Interact 2015; 237:9-17. [PMID: 25980587 DOI: 10.1016/j.cbi.2015.05.007] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/24/2015] [Accepted: 05/08/2015] [Indexed: 01/07/2023]
Abstract
In response to lipopolysaccharide (LPS), tissue resident macrophages and recruited neutrophils produce inflammatory mediators through activation of Toll-like receptor 4 (TLR4)/nuclear factor kappa B (NF-κB) signaling pathway. These mediators include inflammatory cytokines and reactive oxygen species that, in turn, sensitize nociceptors and lead to inflammatory pain. Vinpocetine is a nootropic drug widely used to treat cognitive and neurovascular disorders, and more recently its anti-inflammatory properties through inhibition of NF-κB activation have been described. In the present study, we used the intraplantar and intraperitoneal LPS stimulus in mice to investigate the effects of vinpocetine pre-treatment (3, 10, or 30mg/kg by gavage) in hyperalgesia, leukocyte recruitment, oxidative stress, and pro-inflammatory cytokine production (TNF-α, IL-1β, and IL-33). LPS-induced NF-κB activation and cytokine production were investigated using RAW 264.7 macrophage cell in vitro. Vinpocetine (30mg/kg) significantly reduces hyperalgesia to mechanical and thermal stimuli, and myeloperoxidase (MPO) activity (a neutrophil marker) in the plantar paw skin, and also inhibits neutrophil and mononuclear cell recruitment, superoxide anion and nitric oxide production, oxidative stress, and cytokine production (TNF-α, IL-1β and IL-33) in the peritoneal cavity. At least in part, these effects seem to be mediated by direct effects of vinpocetine on macrophages, since it inhibited the production of the same cytokines (TNF-α, IL-1β and IL-33) and the NF-κB activation in LPS-stimulated RAW 264.7 macrophages. Our results suggest that vinpocetine represents an important therapeutic approach to treat inflammation and pain induced by a gram-negative bacterial component by targeting NF-κB activation and NF-κB-related cytokine production in macrophages.
Collapse
Affiliation(s)
- Kenji W Ruiz-Miyazawa
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil
| | - Felipe A Pinho-Ribeiro
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil
| | - Ana C Zarpelon
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil
| | - Larissa Staurengo-Ferrari
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil
| | - Rangel L Silva
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes s/n, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Jose C Alves-Filho
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes s/n, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes s/n, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Fernando Q Cunha
- Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Avenida Bandeirantes s/n, 14050-490 Ribeirão Preto, São Paulo, Brazil
| | - Rubia Casagrande
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86038-350 Londrina, Paraná, Brazil
| | - Waldiceu A Verri
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rod. Celso Garcia Cid, Km 380, PR445, 86057-970, Cx. Postal 10.011, Londrina, Paraná, Brazil.
| |
Collapse
|
40
|
Vinpocetine reduces carrageenan-induced inflammatory hyperalgesia in mice by inhibiting oxidative stress, cytokine production and NF-κB activation in the paw and spinal cord. PLoS One 2015; 10:e0118942. [PMID: 25822523 PMCID: PMC4379066 DOI: 10.1371/journal.pone.0118942] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 01/07/2015] [Indexed: 12/12/2022] Open
Abstract
Vinpocetine is a safe nootropic agent used for neurological and cerebrovascular diseases. The anti-inflammatory activity of vinpocetine has been shown in cell based assays and animal models, leading to suggestions as to its utility in analgesia. However, the mechanisms regarding its efficacy in inflammatory pain treatment are still not completely understood. Herein, the analgesic effect of vinpocetine and its anti-inflammatory and antioxidant mechanisms were addressed in murine inflammatory pain models. Firstly, we investigated the protective effects of vinpocetine in overt pain-like behavior induced by acetic acid, phenyl-p-benzoquinone (PBQ) and formalin. The intraplantar injection of carrageenan was then used to induce inflammatory hyperalgesia. Mechanical and thermal hyperalgesia were evaluated using the electronic von Frey and the hot plate tests, respectively, with neutrophil recruitment to the paw assessed by a myeloperoxidase activity assay. A number of factors were assessed, both peripherally and in the spinal cord, including: antioxidant capacity, reduced glutathione (GSH) levels, superoxide anion, tumor necrosis factor alpha (TNF-α) and interleukin 1 beta (IL-1β) levels, as well as nuclear factor kappa B (NF-κB) activation. Vinpocetine inhibited the overt pain-like behavior induced by acetic acid, PBQ and formalin (at both phases), as well as the carrageenan-induced mechanical and thermal hyperalgesia and associated neutrophil recruitment. Both peripherally and in the spinal cord, vinpocetine also inhibited: antioxidant capacity and GSH depletion; increased superoxide anion; IL-1β and TNF-α levels; and NF-κB activation. As such, vinpocetine significantly reduces inflammatory pain by targeting oxidative stress, cytokine production and NF-κB activation at both peripheral and spinal cord levels.
Collapse
|
41
|
Zoldan K, Moellmer T, Schneider J, Fueldner C, Knauer J, Lehmann J. Increase of CD25 expression on bovine neutrophils correlates with disease severity in post-partum and early lactating dairy cows. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2014; 47:254-263. [PMID: 25106916 DOI: 10.1016/j.dci.2014.08.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 08/01/2014] [Accepted: 08/02/2014] [Indexed: 06/03/2023]
Abstract
Polymorph-nuclear neutrophils (PMN) in cattle exhibit unique features when compared to human or murine PMN and are of particular interest concerning the risk of post-partum mammary gland or extra-mammary infections related to the periparturient suppression of neutrophil functions. Former studies could show that effects of IL-2 on innate immune cells such as PMN were mediated by the interleukin-2 receptor (IL-2R) β and γ chains. In the current study we could detect IL-2Rα (CD25) expression on bovine PMN using flow-cytometric analysis. CD25 was detected on granulocytes from post-partum and early lactating cows with different inflammatory conditions. The expression of CD25 on PMN in blood and raw milk increased with disease severity. Our results suggest CD25 expression on PMN as a potential biomarker for acute infections in cattle. Furthermore, our data provide a basis to better understanding of the periparturient functional suppressions of PMN that might reveal new molecular targets for therapy or prevention of disease.
Collapse
Affiliation(s)
- Katharina Zoldan
- Department of Cell Engineering, Fraunhofer Institute for Cell Therapy and Immunology, Perlickstr. 1, 04103 Leipzig, Germany
| | - Theresa Moellmer
- Saxon State Office for Environment, Agriculture and Geology, Am Park 3, 04886 Köllitsch, Germany
| | - Josephine Schneider
- Department of Cell Engineering, Fraunhofer Institute for Cell Therapy and Immunology, Perlickstr. 1, 04103 Leipzig, Germany
| | - Christiane Fueldner
- Department of Cell Engineering, Fraunhofer Institute for Cell Therapy and Immunology, Perlickstr. 1, 04103 Leipzig, Germany
| | - Jens Knauer
- Department of Cell Engineering, Fraunhofer Institute for Cell Therapy and Immunology, Perlickstr. 1, 04103 Leipzig, Germany
| | - Jörg Lehmann
- Department of Cell Engineering, Fraunhofer Institute for Cell Therapy and Immunology, Perlickstr. 1, 04103 Leipzig, Germany.
| |
Collapse
|
42
|
Basso B, Marini V. Experimental Chagas disease in Balb/c mice previously vaccinated with T. rangeli. II. The innate immune response shows immunological memory: reality or fiction? Immunobiology 2014; 220:428-36. [PMID: 25454810 DOI: 10.1016/j.imbio.2014.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 10/01/2014] [Accepted: 10/12/2014] [Indexed: 11/30/2022]
Abstract
Trypanosoma cruzi is a real challenge to the host's immune system, because it requires strong humoral and cellular immune response to remove circulating trypomastigote forms, and to prevent the replication of amastigote forms in tissues, involving many regulator and effector components. This protozoan is responsible for Chagas disease, a major public health problem in Latinamerica. We have developed a model of vaccination with Trypanosoma rangeli, a parasite closely related to T. cruzi, but nonpathogenic to humans, which reduces the infectiousness in three different species of animals, mice, dogs and guinea pigs, against challenge with T. cruzi. In a previous work, we demonstrated that mice vaccinated with T. rangeli showed important soluble mediators that stimulate phagocytic activity versus only infected groups. The aim of this work was to study the innate immune response in mice vaccinated or not with T. rangeli. Different population cells and some soluble mediators (cytokines) in peritoneal fluid and plasma in mice vaccinated-infected and only infected with T. cruzi were studied. In the first hours of challenge vaccinated mice showed an increase of macrophages, NK, granulocytes, and regulation of IL6, IFNγ, TNFα and IL10, with an increase of IL12, with respect to only infected mice. Furthermore an increase was observed of Li T, Li B responsible for adaptative response. Finally the findings showed that the innate immune response plays an important role in vaccinated mice for the early elimination of the parasites, complementary with the adaptative immune response, suggesting that vaccination with T. rangeli modulates the innate response, which develops some kind of immunological memory, recognizing shared antigens with T. cruzi. These results could contribute to the knowledge of new mechanisms which would have an important role in the immune response to Chagas disease.
Collapse
Affiliation(s)
- B Basso
- Department of Paediatrics, Neonatology Service, Medicine School, National Cordoba University, Argentina; National Co-ordination of Vector Control, Argentina.
| | - V Marini
- Department of Immunology Medicine School, Catholic University of Cordoba, Argentina
| |
Collapse
|
43
|
Abstract
PURPOSE OF REVIEW The causes of ethnic or benign neutropenia have long been unclear. Here, we discuss the emerging data on the causes and consequences of neutropenia and discuss the relevance of these data for African populations, in which the prevalence of neutropenia is high. RECENT FINDINGS Genetic deletion of the Duffy antigen receptor for chemokines (DARC-null genotype) has been identified as a major determinant for neutropenia. DARC acts as a receptor for Plasmodium vivax malaria and the DARC-null genotype has thus been positively selected among Africans; however, recent studies suggest that Duffy-null-linked neutropenia could increase the risk of HIV infection. Data are emerging that neutrophils are versatile cells that play a critical role not only in direct antimicrobial activity but also in priming and regulating the activity of other innate and adaptive immune cells. Therefore, we discuss here the imperative to better understand the causes, consequences, and the underlying mechanisms of neutropenia among Africans as a prerequisite for rational and optimal biomedical interventions to improve health outcomes. SUMMARY Neutropenia among Africans, linked to the Duffy-null trait or otherwise, may have significant health consequences that remain largely undetermined and could have a significant impact on the pathogenesis of diseases.
Collapse
|
44
|
Gerdts V. Does adjuvanticity depend on the ability to recruit specific immune cells? Expert Rev Vaccines 2014; 10:433-5. [DOI: 10.1586/erv.11.31] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
45
|
Basso B, Marini V. Experimental Chagas disease. Innate immune response in Balb/c mice previously vaccinated with Trypanosoma rangeli. I. The macrophage shows immunological memory: Reality or fiction? Immunobiology 2013; 219:275-84. [PMID: 24321621 DOI: 10.1016/j.imbio.2013.10.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 10/27/2013] [Accepted: 10/31/2013] [Indexed: 12/29/2022]
Abstract
Chagas' disease, caused by Trypanosoma cruzi, is a major vector borne health problem in Latin America and an emerging or re-emerging infectious disease in several countries. Immune response to T. cruzi infection is highly complex and involves many components, both regulators and effectors. Although different parasites have been shown to activate different mechanisms of innate immunity, T. cruzi is often able to survive and replicate in its host because they are well adapted to resisting host defences. An experimental model for vaccinating mice with Trypanosoma rangeli, a parasite closely related to T. cruzi, but nonpathogenic to humans, has been designed in our laboratory, showing protection against challenge with T. cruzi infection. The aim of this work was to analyze some mechanisms of the early innate immune response in T. rangeli vaccinated mice challenged with T. cruzi. For this purpose, some interactions were studied between T. cruzi and peritoneal macrophages of mice vaccinated with T. rangeli, infected or not with T. cruzi and the levels of some molecules or soluble mediators which could modify these interactions. The results in vaccinated animals showed a strong innate immune response, where the adherent cells of the vaccinated mice revealed important phagocytic activity, and some soluble mediator (Respiratory Burst: significantly increase, p ≤ 0.03; NO: the levels of vaccinated animals were lower than those of the control group; Arginasa: significantly increase, p ≤ 0.04). The results showed an important role in the early elimination of the parasites and their close relation with the absence of histological lesions that these animals present with regard to the only infected mice. This behaviour reveals that the macrophages act with some type of memory, recognizing the antigens to which they have previously been exposed, in mice were vaccinated with T. rangeli, which shares epitopes with T. cruzi.
Collapse
Affiliation(s)
- B Basso
- Department of Paediatrics, Neonatology Service, Medicine School, National Cordoba University, Argentina; National Co-ordination of Vector Control, Argentina.
| | - V Marini
- Department of Immunology Medicine School, Catholic University of Cordoba, Argentina
| |
Collapse
|
46
|
Devarajan A, Bourquard N, Grijalva VR, Gao F, Ganapathy E, Verma J, Reddy ST. Role of PON2 in innate immune response in an acute infection model. Mol Genet Metab 2013; 110:362-70. [PMID: 23911207 PMCID: PMC3800229 DOI: 10.1016/j.ymgme.2013.07.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/07/2013] [Accepted: 07/07/2013] [Indexed: 11/18/2022]
Abstract
N-(3-oxododecanoyl)-l-homoserine lactone (3OC(12)-HSL) is a quorum-sensing molecule produced by gram-negative microbial pathogens such as Pseudomonas aeruginosa (PAO1). 3OC(12)-HSL is involved in the regulation of bacterial virulence factors and also alters the function of the host immune cells. Others and we have previously shown that paraoxonase 2 (PON2), a member of the paraoxonase gene family expressed in immune cells, hydrolyzes 3OC(12)-HSL. In this study, we examined i) whether macrophage PON2 participates in 3OC(12)-HSL hydrolysis, ii) the effect of PON2 deficiency in acute PAO1 infection in mice and iii) the effect of 3OC(12)-HSL on PON2 deficient (PON2-def) macrophages. When compared to wild type macrophages, both intact cells and membrane-enriched protein lysates obtained from PON2-def macrophages show a marked impairment in their ability to hydrolyze 3OC(12)-HSL. PON2 expression (message and protein) is not altered in response to 3OC(12)-HSL in macrophages. 3OC(12)-HSL treated PON2-def macrophages showed i) an increase in ER stress and oxidative stress, ii) defective phosphatidylinositol 3-kinase (PI3 kinase)/AKT activation, and iii) reduced phagocytosis function. Moreover, the nitration to phosphorylation ratio of Tyr458 in p85 protein, the regulatory subunit of PI3-kinase that has been correlated with the phagocytosis function of macrophages, was increased in PON2-def macrophages. Antioxidant treatment reversed the effects of PON2 deficiency in macrophage phagocytosis function. Furthermore, following administration of 1.6 × 10(7) CFU of PAO1, bacterial clearance was significantly reduced in the lungs (5.7 fold), liver (2.5 fold), and spleen (14.8 fold) of PON2-def mice when compared to wild type mice. Our results suggest that PON2 plays an important role in innate immune defense against PAO1 infection.
Collapse
Affiliation(s)
- Asokan Devarajan
- Division of Cardiology, Department of Medicine, University of California Los Angeles, CA 90095, USA
| | - Noam Bourquard
- Division of Cardiology, Department of Medicine, University of California Los Angeles, CA 90095, USA
- Department of Molecular and Medical Pharmacology, University of California Los Angeles, CA 90095, USA
| | - Victor R Grijalva
- Division of Cardiology, Department of Medicine, University of California Los Angeles, CA 90095, USA
| | - Feng Gao
- Department of Obstetrics and Gynecology, University of California Los Angeles, CA 90095, USA
| | - Ekambaram Ganapathy
- Department of Obstetrics and Gynecology, University of California Los Angeles, CA 90095, USA
| | - Jitendra Verma
- Division of Cardiology, Department of Medicine, University of California Los Angeles, CA 90095, USA
| | - Srinivasa T. Reddy
- Division of Cardiology, Department of Medicine, University of California Los Angeles, CA 90095, USA
- Department of Molecular and Medical Pharmacology, University of California Los Angeles, CA 90095, USA
- Department of Obstetrics and Gynecology, University of California Los Angeles, CA 90095, USA
| |
Collapse
|
47
|
Schuster S, Hurrell B, Tacchini-Cottier F. Crosstalk between neutrophils and dendritic cells: a context-dependent process. J Leukoc Biol 2013; 94:671-5. [DOI: 10.1189/jlb.1012540] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
|
48
|
Burton AG, Harris LA, Owens SD, Jandrey KE. The prognostic utility of degenerative left shifts in dogs. J Vet Intern Med 2013; 27:1517-22. [PMID: 24118349 DOI: 10.1111/jvim.12208] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 06/27/2013] [Accepted: 08/21/2013] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND A degenerative left shift (DLS) in dogs is reported to be a poor prognostic indicator, but no studies have been reported to verify this claim. HYPOTHESIS/OBJECTIVES To characterize the canine population affected by DLS and to determine if the presence and severity of the DLS are associated with increased risk of euthanasia or death. ANIMALS Three-hundred and nineteen dogs with DLS (cases) and 918 dogs without DLS (controls) presented to the University of California, Davis Veterinary Medical Teaching Hospital between April 1, 1995 and April 1, 2010. METHODS Retrospective case-control study. All cases had a CBC performed within 24 hours of presentation that showed an immature neutrophil count higher than the mature neutrophil count. Controls were matched by year of presentation and primary diagnosis. Survival analysis was used to determine the risk of death or euthanasia associated with DLS and other potential predictors. RESULTS Half of cases versus 76% of controls were alive at discharge. Median in-hospital survival time was 7 days for cases and 13 days for controls. DLS was a significant predictor of death or euthanasia in both univariate and multivariate analysis (hazard ratio, HR, 1.9; 95% CI 1.54-2.34). CONCLUSIONS AND CLINICAL IMPORTANCE DLS in dogs is associated with an increased risk of death or euthanasia. This finding, however, varies with disease diagnosis and should be interpreted in light of the individual patient.
Collapse
Affiliation(s)
- A G Burton
- Veterinary Medical Teaching Hospital, University of California, Davis, Davis, CA
| | | | | | | |
Collapse
|
49
|
Suram S, Silveira LJ, Mahaffey S, Brown GD, Bonventre JV, Williams DL, Gow NAR, Bratton DL, Murphy RC, Leslie CC. Cytosolic phospholipase A(2)α and eicosanoids regulate expression of genes in macrophages involved in host defense and inflammation. PLoS One 2013; 8:e69002. [PMID: 23950842 PMCID: PMC3742295 DOI: 10.1371/journal.pone.0069002] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 06/03/2013] [Indexed: 12/20/2022] Open
Abstract
The role of Group IVA cytosolic phospholipase A2 (cPLA2α)
activation in regulating macrophage transcriptional responses to
Candida
albicans infection was investigated.
cPLA2α releases arachidonic acid for the production of
eicosanoids. In mouse resident peritoneal macrophages, prostacyclin,
prostaglandin E2 and leukotriene C4 were produced within
minutes of C.
albicans addition before cyclooxygenase 2
expression. The production of TNFα was lower in C.
albicans-stimulated cPLA2α+/+
than cPLA2α-/- macrophages due to an autocrine effect of
prostaglandins that increased cAMP to a greater extent in
cPLA2α+/+ than cPLA2α-/-
macrophages. For global insight, differential gene expression in
C.
albicans-stimulated
cPLA2α+/+ and cPLA2α-/-
macrophages (3 h) was compared by microarray. cPLA2α+/+
macrophages expressed 86 genes at lower levels and 181 genes at higher levels
than cPLA2α-/- macrophages (≥2-fold, p<0.05). Several
pro-inflammatory genes were expressed at lower levels (Tnfα,
Cx3cl1, Cd40, Ccl5,
Csf1, Edn1, CxCr7, Irf1,
Irf4, Akna, Ifnγ, several IFNγ-inducible
GTPases). Genes that dampen inflammation (Socs3,
Il10, Crem, Stat3,
Thbd, Thbs1, Abca1) and
genes involved in host defense (Gja1, Csf3,
Trem1, Hdc) were expressed at higher
levels in cPLA2α+/+ macrophages. Representative genes
expressed lower in cPLA2α+/+ macrophages (Tnfα,
Csf1) were increased by treatment with a prostacyclin receptor
antagonist and protein kinase A inhibitor, whereas genes expressed at higher
levels (Crem, Nr4a2, Il10,
Csf3) were suppressed. The results suggest that
C.
albicans stimulates an autocrine loop in
macrophages involving cPLA2α, cyclooxygenase 1-derived prostaglandins
and increased cAMP that globally effects expression of genes involved in host
defense and inflammation.
Collapse
Affiliation(s)
- Saritha Suram
- Department of Pediatrics, National Jewish Health, Denver, Colorado,
United States of America
| | - Lori J. Silveira
- Division of Biostatistics and Bioinformatics, National Jewish Health,
Denver, Colorado, United States of America
| | - Spencer Mahaffey
- Department of Pediatrics, National Jewish Health, Denver, Colorado,
United States of America
| | - Gordon D. Brown
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United
Kingdom
| | - Joseph V. Bonventre
- Renal Division, Brigham and Women’s Hospital, Boston, Massachusetts,
United States of America
| | - David L. Williams
- Department of Surgery, James H. Quillen College of Medicine, Johnson
City, Tennessee, United States of America
| | - Neil A. R. Gow
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, United
Kingdom
| | - Donna L. Bratton
- Department of Pediatrics, National Jewish Health, Denver, Colorado,
United States of America
| | - Robert C. Murphy
- Department of Pharmacology, University of Colorado Denver, Aurora,
Colorado, United States of America
| | - Christina C. Leslie
- Department of Pediatrics, National Jewish Health, Denver, Colorado,
United States of America
- Department of Pharmacology, University of Colorado Denver, Aurora,
Colorado, United States of America
- Department of Pathology, University of Colorado Denver, Aurora, Colorado,
United States of America
- * E-mail:
| |
Collapse
|
50
|
Guirado E, Schlesinger LS. Modeling the Mycobacterium tuberculosis Granuloma - the Critical Battlefield in Host Immunity and Disease. Front Immunol 2013; 4:98. [PMID: 23626591 PMCID: PMC3631743 DOI: 10.3389/fimmu.2013.00098] [Citation(s) in RCA: 163] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 04/11/2013] [Indexed: 12/19/2022] Open
Abstract
Granulomas are the hallmark of Mycobacterium tuberculosis (M.tb) infection and thus sit at the center of tuberculosis (TB) immunopathogenesis. TB can result from either early progression of a primary granuloma during the infection process or reactivation of an established granuloma in a latently infected person. Granulomas are compact, organized aggregates of immune cells consisting of blood-derived infected and uninfected macrophages, foamy macrophages, epithelioid cells (uniquely differentiated macrophages), and multinucleated giant cells (Langerhans cells) surrounded by a ring of lymphocytes. The granuloma's main function is to localize and contain M.tb while concentrating the immune response to a limited area. However, complete eradication does not occur since M.tb has its own strategies to persist within the granuloma and to reactivate and escape under certain conditions. Thus M.tb-containing granulomas represent a unique battlefield for dictating both the host immune and bacterial response. The architecture, composition, function, and maintenance of granulomas are key aspects to study since they are expected to have a profound influence on M.tb physiology in this niche. Granulomas are not only present in mycobacterial infections; they can be found in many other infectious and non-infectious diseases and play a crucial role in immunity and disease. Here we review the models currently available to study the granulomatous response to M.tb.
Collapse
Affiliation(s)
- Evelyn Guirado
- Department of Microbial Infection and Immunity, Center for Microbial Interface Biology, The Ohio State University Columbus, OH, USA
| | | |
Collapse
|