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Bouchard-Boivin F, Désy O, Béland S, Houde I, De Serres SA. TNF-α Production by Monocytes Stimulated With Epstein-Barr Virus-Peptides as a Marker of Immunosuppression-Related Adverse Events in Kidney Transplant Recipients. Kidney Int Rep 2019; 4:1446-1453. [PMID: 31701054 PMCID: PMC6829185 DOI: 10.1016/j.ekir.2019.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 06/17/2019] [Accepted: 07/08/2019] [Indexed: 12/23/2022] Open
Abstract
Introduction Infections and cancers now outnumber rejection as a cause of morbidity in transplant recipients, likely as a result of over-immunosuppression. Currently, there is no clinical tool to detect over-immunosuppression. We recently reported that tumor necrosis factor alpha (TNF-α) production by CD14+CD16+ intermediate monocytes, following ex vivo stimulation by Epstein-Barr virus–peptides, could identify over-immunosuppressed patients. Methods We conducted a pilot study the assay using 142 peripheral blood mononuclear samples from a cohort of 71 kidney transplant recipients. Patients were classified as cases or controls according to the occurrence of opportunistic infection, recurring bacterial infections or de novo neoplasia in the 12 months following blood collection. We used both the classifier rule and a threshold of <73% of CD14+CD16+TNFα+ cells developed in a previous training set. Results Cases were detected with 83% sensitivity and 68% specificity. The negative predictive value of the assay was 89%. The hazard ratio for the occurrence of the endpoint was 6.8 (95% confidence interval 2.0–23.9; P = 0.003) in patients with a positive test. Multivariable linear regression analysis revealed that the association was independent of baseline clinical characteristics, renal function, and immunosuppressive regimen. Conclusion These data validate this cell-based assay as a promising tool for personalizing immunotherapy. Studies are under way for a 2-step assay with improved specificity.
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Affiliation(s)
- François Bouchard-Boivin
- Transplantation Unit, Renal Division, Department of Medicine, University Health Center of Quebec, Faculty of Medicine, Laval University, Quebec, QC, Canada
| | - Olivier Désy
- Transplantation Unit, Renal Division, Department of Medicine, University Health Center of Quebec, Faculty of Medicine, Laval University, Quebec, QC, Canada
| | - Stéphanie Béland
- Transplantation Unit, Renal Division, Department of Medicine, University Health Center of Quebec, Faculty of Medicine, Laval University, Quebec, QC, Canada
| | - Isabelle Houde
- Transplantation Unit, Renal Division, Department of Medicine, University Health Center of Quebec, Faculty of Medicine, Laval University, Quebec, QC, Canada
| | - Sacha A De Serres
- Transplantation Unit, Renal Division, Department of Medicine, University Health Center of Quebec, Faculty of Medicine, Laval University, Quebec, QC, Canada
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202
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Cattin A, Wiche Salinas TR, Gosselin A, Planas D, Shacklett B, Cohen EA, Ghali MP, Routy JP, Ancuta P. HIV-1 is rarely detected in blood and colon myeloid cells during viral-suppressive antiretroviral therapy. AIDS 2019; 33:1293-1306. [PMID: 30870200 PMCID: PMC6686847 DOI: 10.1097/qad.0000000000002195] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The aim of this study was to explore the contribution of blood and colon myeloid cells to HIV persistence during antiretroviral therapy (ART). DESIGN Leukapheresis was collected from HIV-infected individuals with undetectable plasma viral load during ART (HIV + ART; n = 15) and viremics untreated (HIV+; n = 6). Rectal sigmoid biopsies were collected from n = 8 HIV+ART. METHODS Myeloid cells (total monocytes (Mo), CD16/CD16 Mo, CD1c dendritic cells) and CD4 T cells were isolated by magnetic-activated cell sorting (MACS) and/or fluorescence-activated cell sorting (FACS) from peripheral blood. Matched myeloid and CCR6CD4 T cells were isolated from blood and rectal biopsies by FACS. Levels of early (RU5 primers), late (Gag primers) and/or integrated HIV-DNA (Alu/HIV primers) were quantified by nested real-time PCR. Replication-competent HIV was amplified by co-culturing cells from HIV-positive individuals with CD3/CD28-activated CD4 T cells from uninfected donors. RESULTS Early/late but not integrated HIV reverse transcripts were detected in blood myeloid subsets of four out of 10 HIV+ART; in contrast, integrated HIV-DNA was exclusively detected in CD4 T cells. In rectal biopsies, late HIV reverse transcripts were detected in myeloid cells and CCR6CD4 T cells from one out of eight and seven out of eight HIV+ART individuals, respectively. Replication-competent HIV was outgrown from CD4 T cells but not from myeloid of untreated/ART-treated HIV-positive individuals. CONCLUSION In contrast to CD4 T cells, blood and colon myeloid cells carry detectable HIV only in a small fraction of HIV+ART individuals. This is consistent with the documented resistance of Mo to HIV infection and the rapid turnover of Mo-derived macrophages in the colon. Future assessment of multiple lymphoid and nonlymphoid tissues is required to include/exclude myeloid cells as relevant HIV reservoirs during ART.
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Affiliation(s)
- Amélie Cattin
- CHUM-Research Centre, Montréal, Qc, Canada
- Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montréal, Qc, Canada
| | - Tomas Raul Wiche Salinas
- CHUM-Research Centre, Montréal, Qc, Canada
- Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montréal, Qc, Canada
| | | | - Delphine Planas
- CHUM-Research Centre, Montréal, Qc, Canada
- Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montréal, Qc, Canada
| | | | - Eric A. Cohen
- Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montréal, Qc, Canada
- Institut de Recherche Clinique de Montréal, Montréal, Qc, Canada
| | - Maged P. Ghali
- Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, Canada
| | - Jean-Pierre Routy
- Division of Hematology, McGill University Health Centre, Montreal, QC, Canada
- Chronic Viral Illness Service and Research Institute, McGill University Health Centre, Montreal, QC, Canada
| | - Petronela Ancuta
- CHUM-Research Centre, Montréal, Qc, Canada
- Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montréal, Qc, Canada
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203
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Therapeutic Potential of Hematopoietic Prostaglandin D 2 Synthase in Allergic Inflammation. Cells 2019; 8:cells8060619. [PMID: 31226822 PMCID: PMC6628301 DOI: 10.3390/cells8060619] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/12/2019] [Accepted: 06/19/2019] [Indexed: 12/15/2022] Open
Abstract
Worldwide, there is a rise in the prevalence of allergic diseases, and novel efficient therapeutic approaches are still needed to alleviate disease burden. Prostaglandin D2 (PGD2) has emerged as a central inflammatory lipid mediator associated with increased migration, activation and survival of leukocytes in various allergy-associated disorders. In the periphery, the hematopoietic PGD synthase (hPGDS) acts downstream of the arachidonic acid/COX pathway catalysing the isomerisation of PGH2 to PGD2, which makes it an interesting target to treat allergic inflammation. Although much effort has been put into developing efficient hPGDS inhibitors, no compound has made it to the market yet, which indicates that more light needs to be shed on potential PGD2 sources and targets to determine which particular condition and patient will benefit most and thereby improve therapeutic efficacy. In this review, we want to revisit current knowledge about hPGDS function, expression in allergy-associated cell types and their contribution to PGD2 levels as well as beneficial effects of hPGDS inhibition in allergic asthma, rhinitis, atopic dermatitis, food allergy, gastrointestinal allergic disorders and anaphylaxis.
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204
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Prabowo SA, Painter H, Zelmer A, Smith SG, Seifert K, Amat M, Cardona PJ, Fletcher HA. RUTI Vaccination Enhances Inhibition of Mycobacterial Growth ex vivo and Induces a Shift of Monocyte Phenotype in Mice. Front Immunol 2019; 10:894. [PMID: 31114572 PMCID: PMC6503078 DOI: 10.3389/fimmu.2019.00894] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 04/08/2019] [Indexed: 12/17/2022] Open
Abstract
Tuberculosis (TB) is a major global health problem and there is a dire need for an improved treatment. A strategy to combine vaccination with drug treatment, termed therapeutic vaccination, is expected to provide benefit in shortening treatment duration and augmenting treatment success rate. RUTI candidate vaccine has been specifically developed as a therapeutic vaccine for TB. The vaccine is shown to reduce bacillary load when administered after chemotherapy in murine and guinea pig models, and is also immunogenic when given to healthy adults and individuals with latent TB. In the absence of a validated correlate of vaccine-induced protection for TB vaccine testing, mycobacterial growth inhibition assay (MGIA) has been developed as a comprehensive tool to evaluate vaccine potency ex vivo. In this study, we investigated the potential of RUTI vaccine to control mycobacterial growth ex vivo and demonstrated the capacity of MGIA to aid the identification of essential immune mechanism. We found an association between the peak response of vaccine-induced growth inhibition and a shift in monocyte phenotype following RUTI vaccination in healthy mice. The vaccination significantly increased the frequency of non-classical Ly6C− monocytes in the spleen after two doses of RUTI. Furthermore, mRNA expressions of Ly6C−-related transcripts (Nr4a1, Itgax, Pparg, Bcl2) were upregulated at the peak vaccine response. This is the first time the impact of RUTI has been assessed on monocyte phenotype. Given that non-classical Ly6C− monocytes are considered to play an anti-inflammatory role, our findings in conjunction with previous studies have demonstrated that RUTI could induce a balanced immune response, promoting an effective cell-mediated response whilst at the same time limiting excessive inflammation. On the other hand, the impact of RUTI on non-classical monocytes could also reflect its impact on trained innate immunity which warrants further investigation. In summary, we have demonstrated a novel mechanism of action of the RUTI vaccine, which suggests the importance of a balanced M1/M2 monocyte function in controlling mycobacterial infection. The MGIA could be used as a screening tool for therapeutic TB vaccine candidates and may aid the development of therapeutic vaccination regimens for TB in the near future.
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Affiliation(s)
- Satria A Prabowo
- Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.,Tuberculosis Centre, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Hannah Painter
- Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.,Tuberculosis Centre, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Andrea Zelmer
- Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.,Tuberculosis Centre, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Steven G Smith
- Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.,Tuberculosis Centre, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Karin Seifert
- Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | | | - Pere-Joan Cardona
- Experimental Tuberculosis Unit (UTE), Fundació Institut Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona (UAB), Badalona, Spain.,Centro de Investigación Biomédica en Red (CIBER) de Enfermedades Respiratorias, Madrid, Spain
| | - Helen A Fletcher
- Department of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, United Kingdom.,Tuberculosis Centre, London School of Hygiene and Tropical Medicine, London, United Kingdom
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205
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Narasimhan PB, Marcovecchio P, Hamers AA, Hedrick CC. Nonclassical Monocytes in Health and Disease. Annu Rev Immunol 2019; 37:439-456. [DOI: 10.1146/annurev-immunol-042617-053119] [Citation(s) in RCA: 164] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Monocytes are innate blood cells that maintain vascular homeostasis and are early responders to pathogens in acute infections. There are three well-characterized classes of monocytes: classical (CD14+CD16−in humans and Ly6Chiin mice), intermediate (CD14+CD16+in humans and Ly6C+Treml4+in mice), and nonclassical (CD14−CD16+in humans and Ly6Cloin mice). Classical monocytes are critical for the initial inflammatory response. Classical monocytes can differentiate into macrophages in tissue and can contribute to chronic disease. Nonclassical monocytes have been widely viewed as anti-inflammatory, as they maintain vascular homeostasis. They are a first line of defense in recognition and clearance of pathogens. However, their roles in chronic disease are less clear. They have been shown to be protective as well as positively associated with disease burden. This review focuses on the state of the monocyte biology field and the functions of monocytes, particularly nonclassical monocytes, in health and disease.
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Affiliation(s)
- Prakash Babu Narasimhan
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA;, , ,
| | - Paola Marcovecchio
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA;, , ,
| | - Anouk A.J. Hamers
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA;, , ,
| | - Catherine C. Hedrick
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, California 92037, USA;, , ,
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206
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Chen YC, Wu YJ, Hu CY. Monosaccharide composition influence and immunomodulatory effects of probiotic exopolysaccharides. Int J Biol Macromol 2019; 133:575-582. [PMID: 31004639 DOI: 10.1016/j.ijbiomac.2019.04.109] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/10/2019] [Accepted: 04/15/2019] [Indexed: 12/13/2022]
Abstract
Exopolysaccharides (EPSs) are metabolites of probiotics that have gained wide interest recently. A strain of Lactobacillus reuteri Mh-001 with high exopolysaccharide (EPS) production ability was isolated, identified, and were used to investigate the anti-inflammatory effects of the EPSs. Among the three unpurified EPSs, RAW246.7 murine macrophages treated with 5 ppm of EPS 1 revealed the lowest tumour necrosis factor α (TNF-α) secretion (325.32 ± 51.10 pg/ug DNA). The second lowest TNF- α secretion occurred with EPS 2 (701.12 ± 86.108 pg/ug DNA) from Mh-002. EPSs 4, 5, and 6 were further purified from EPS 1. Cells treated with 1 ppm of EPS 4 had the lowest TNF-α secretion of all (209.20 ± 84.34 pg/ug DNA). The monosaccharide components, EPS 4 and EPS 1, had the highest galactose content (45 ± 2.75% and 39 ± 2.75%, respectively). The monosaccharide percentages (galactose > rhamnose > glucose) were related to the anti-inflammatory activity of the EPSs. The galactose content of EPSs enhanced their anti-inflammatory effects on the macrophages. These data indicate that EPS possesses beneficial physiological effects such as anti-inflammatory properties, and the monosaccharide content of the EPS was the factor influencing the anti-inflammatory properties.
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Affiliation(s)
- Yo-Chia Chen
- Department of Biological Science and Technology, National Pingtung University of Science and Technology
| | - Yu-Jen Wu
- Department of Biological Science and Technology, Meiho University; Department of Nursing, Meiho University
| | - Chun-Yi Hu
- Department of Food Science and Nutrition, Meiho University.
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207
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Lee JM. When CAR Meets Stem Cells. Int J Mol Sci 2019; 20:ijms20081825. [PMID: 31013813 PMCID: PMC6514932 DOI: 10.3390/ijms20081825] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 04/05/2019] [Accepted: 04/10/2019] [Indexed: 12/21/2022] Open
Abstract
The generation of immune cells from human pluripotent stem cells (embryonic stem cells and induced pluripotent stem cells) has been of keen interest to regenerative medicine. Pluripotent stem cell-derived immune cells such as natural killer cells, macrophages, and lymphoid cells, especially T cells, can be used in immune cell therapy to treat incurable cancers. Moreover, since the advent of chimeric antigen receptor (CAR) technology, the success of CAR-T cells in the clinic has galvanized new efforts to harness the power of CAR technology to generate CAR-engineered immune cells from pluripotent stem cells. This review provides a summary of pluripotent stem cell-derived immune cells and CAR technology, together with perspectives on combining pluripotent stem-cell derived immune cells and CAR engineering to pave a new way for developing next generation immune cell therapy.
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Affiliation(s)
- Jung Min Lee
- School of Life Science, Handong Global University, Pohang 37554, Korea.
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208
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Quixabeira VBL, Pereira LIDA, Veras PRV, da Costa ACV, Fonseca LG, Galdino Jr. H, da Silva Jr. IA, Morato CI, Pinto SA, Pereira AJCS, Dorta ML, Oliveira MAPD, Gomes RS, Ribeiro‐Dias F. Alterations in monocyte subsets and cytokine production after TLR activation in American Cutaneous Leishmaniasis. Parasite Immunol 2019; 41:e12623. [DOI: 10.1111/pim.12623] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 02/22/2019] [Accepted: 03/08/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Valéria Bernadete Leite Quixabeira
- Instituto de Patologia Tropical e Saúde Pública Universidade Federal Goiás Goiânia Goiás Brazil
- Instituto Goiano de Oncologia e Hematologia Goiânia Goiás Brazil
| | - Ledice Inacia de Araújo Pereira
- Instituto de Patologia Tropical e Saúde Pública Universidade Federal Goiás Goiânia Goiás Brazil
- Hospital AnuarAuad (Doenças Tropicais) Goiânia Goiás Brazil
| | | | | | - Larissa Gomides Fonseca
- Instituto de Patologia Tropical e Saúde Pública Universidade Federal Goiás Goiânia Goiás Brazil
| | - Hélio Galdino Jr.
- Instituto de Patologia Tropical e Saúde Pública Universidade Federal Goiás Goiânia Goiás Brazil
| | | | - Camila Imai Morato
- Instituto de Patologia Tropical e Saúde Pública Universidade Federal Goiás Goiânia Goiás Brazil
| | - Sebastião Alves Pinto
- Instituto Goiano de Oncologia e Hematologia Goiânia Goiás Brazil
- Faculdade de Medicina Universidade Federal de Goiás Goiânia Goiás Brazil
| | | | - Miriam Leandro Dorta
- Instituto de Patologia Tropical e Saúde Pública Universidade Federal Goiás Goiânia Goiás Brazil
| | | | - Rodrigo Saar Gomes
- Instituto de Patologia Tropical e Saúde Pública Universidade Federal Goiás Goiânia Goiás Brazil
| | - Fátima Ribeiro‐Dias
- Instituto de Patologia Tropical e Saúde Pública Universidade Federal Goiás Goiânia Goiás Brazil
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209
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Ibáñez L, Pontier-Bres R, Larbret F, Rekima A, Verhasselt V, Blin-Wakkach C, Czerucka D. Saccharomyces boulardii Strain CNCM I-745 Modifies the Mononuclear Phagocytes Response in the Small Intestine of Mice Following Salmonella Typhimurium Infection. Front Immunol 2019; 10:643. [PMID: 31001263 PMCID: PMC6455222 DOI: 10.3389/fimmu.2019.00643] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 03/08/2019] [Indexed: 12/23/2022] Open
Abstract
Intestinal mononuclear phagocytes (MPs) comprise dendritic cells (DCs) and macrophages (Mφs) that play different roles in response to Salmonella infection. After phagocytosis, DCs expressing CD103 transport Salmonella from the intestinal tract to the mesenteric lymph nodes (MLN) and induce adaptive immune responses whereas resident Mφs expressing CX3CR1 capture bacteria in the lumen and reside in the lamina propria (LP) where they induce a local immune response. CX3CR1+ Mφs are generated from Ly6Chi monocytes that enter the colonic mucosa and differentiate locally. We previously demonstrated that the probiotic yeast Saccharomyces boulardii CNCM I-745 (S.b) prevents infection by Salmonella enterica serovar Typhimurium (ST), decreases ST translocation to the peripheral organs and modifies the pro-and anti-inflammatory cytokine profiles in the gut. In the present study, we investigated the effect of S.b on the migratory CD103+ DCs and the resident CX3CR1+ Mφs. MPs were isolated from the LP of streptomycin-treated mice infected by ST with or without S.b treatment before or during the infection. In S.b-pretreated mice, we observed a decrease of the CD103+ DCs in the LP that was associated with the drop of ST recovery from MLN. Interestingly, S.b induced an infiltration of LP by classical Ly6Chi monocytes, and S.b modified the monocyte-Mφ maturation process in ST-infected mice. Our results showed that S.b treatment induced the expansion of Ly6Chi monocytes in the blood as well as in the bone marrow (BM) of mice, thus contributing to the Mφ replenishment in LP from blood monocytes. In vitro experiments conducted on BM cells confirmed that S.b induced the expansion of CX3CR1+ Mφs and concomitantly ST phagocytosis. Altogether, these data demonstrate that Saccharomyces boulardii CNCM I-745 modulates the innate immune response. Although here, we cannot explicitly delineate direct effects on ST from innate immunity, S. b-amplified innate immunity correlated with partial protection from ST infection. This study shows that S.b can induce the expansion of classical monocytes that are precursors of resident Mφs in the LP.
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Affiliation(s)
- Lidia Ibáñez
- CNRS, UMR 7370, LP2M, Faculté de Médecine, University Nice Sophia Antipolis, Nice, France.,University Nice Sophia Antipolis, Nice, France
| | | | - Frederic Larbret
- University Nice Sophia Antipolis, Nice, France.,EA6303, University Nice Sophia Antipolis, Hopital de l'Archet, Nice, France
| | - Akila Rekima
- EA6303, University Nice Sophia Antipolis, Hopital de l'Archet, Nice, France
| | - Valérie Verhasselt
- EA6303, University Nice Sophia Antipolis, Hopital de l'Archet, Nice, France
| | - Claudine Blin-Wakkach
- CNRS, UMR 7370, LP2M, Faculté de Médecine, University Nice Sophia Antipolis, Nice, France.,University Nice Sophia Antipolis, Nice, France
| | - Dorota Czerucka
- Ecosystems and Immunity team, Centre Scientifique de Monaco, Monaco, Monaco
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210
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Sun Y, Reid B, Ferreira F, Luxardi G, Ma L, Lokken KL, Zhu K, Xu G, Sun Y, Ryzhuk V, Guo BP, Lebrilla CB, Maverakis E, Mogilner A, Zhao M. Infection-generated electric field in gut epithelium drives bidirectional migration of macrophages. PLoS Biol 2019; 17:e3000044. [PMID: 30964858 PMCID: PMC6456179 DOI: 10.1371/journal.pbio.3000044] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 03/05/2019] [Indexed: 12/13/2022] Open
Abstract
Many bacterial pathogens hijack macrophages to egress from the port of entry to the lymphatic drainage and/or bloodstream, causing dissemination of life-threatening infections. However, the underlying mechanisms are not well understood. Here, we report that Salmonella infection generates directional electric fields (EFs) in the follicle-associated epithelium of mouse cecum. In vitro application of an EF, mimicking the infection-generated electric field (IGEF), induces directional migration of primary mouse macrophages to the anode, which is reversed to the cathode upon Salmonella infection. This infection-dependent directional switch is independent of the Salmonella pathogenicity island 1 (SPI-1) type III secretion system. The switch is accompanied by a reduction of sialic acids on glycosylated surface components during phagocytosis of bacteria, which is absent in macrophages challenged by microspheres. Moreover, enzymatic cleavage of terminally exposed sialic acids reduces macrophage surface negativity and severely impairs directional migration of macrophages in response to an EF. Based on these findings, we propose that macrophages are attracted to the site of infection by a combination of chemotaxis and galvanotaxis; after phagocytosis of bacteria, surface electrical properties of the macrophage change, and galvanotaxis directs the cells away from the site of infection.
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Affiliation(s)
- Yaohui Sun
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
- Courant Institute and Department of Biology, New York University, New York, New York, United States of America
| | - Brian Reid
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
| | - Fernando Ferreira
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
- Departamento de Biologia, Centro de Biologia Molecular e Ambiental (CBMA), Universidade do Minho, Braga, Portugal
| | - Guillaume Luxardi
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
| | - Li Ma
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
- Skin and Cosmetic Research Department, Shanghai Skin Disease Hospital, Shanghai, China
| | - Kristen L. Lokken
- Department of Microbiology and Immunology, School of Medicine, University of California, Davis, Davis, California, United States of America
| | - Kan Zhu
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
| | - Gege Xu
- Department of Chemistry, University of California, Davis, Davis, California, United States of America
| | - Yuxin Sun
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
| | - Volodymyr Ryzhuk
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
| | - Betty P. Guo
- Office of Research, School of Medicine, University of California, Davis, Davis, California, United States of America
| | - Carlito B. Lebrilla
- Department of Chemistry, University of California, Davis, Davis, California, United States of America
| | - Emanual Maverakis
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
| | - Alex Mogilner
- Courant Institute and Department of Biology, New York University, New York, New York, United States of America
| | - Min Zhao
- Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America
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211
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Bendíčková K, Tidu F, De Zuani M, Kohoutková MH, Andrejčinová I, Pompeiano A, Bělášková S, Forte G, Zelante T, Frič J. Calcineurin inhibitors reduce NFAT-dependent expression of antifungal pentraxin-3 by human monocytes. J Leukoc Biol 2019; 107:497-508. [PMID: 30934147 PMCID: PMC7064969 DOI: 10.1002/jlb.4vma0318-138r] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 02/20/2019] [Accepted: 03/22/2019] [Indexed: 01/14/2023] Open
Abstract
Calcineurin (CN) inhibitors are effective clinical immunosuppressants but leave patients vulnerable to potentially fatal fungal infections. This study tested the hypothesis that CN inhibition interferes with antifungal immune defenses mediated by monocytes. We showed that NFAT is expressed by human monocytes, and is activated by exposure to fungal ligands. We confirmed that NFAT translocation potently activated target gene transcription using a human monocytic reporter cell line. Inhibition of CN‐NFAT by cyclosporine A significantly reduced monocyte production of TNF‐α, IL‐10, and MCP‐1 proteins in response to pattern recognition receptor ligands as well as to Aspergillus fumigatus conidia. Moreover, we revealed that human monocytes express the antifungal protein pentraxin‐3 under control of NFAT. In conclusion, clinical CN inhibitors have the potential to interfere with the novel NFAT‐dependent pentraxin‐3 pathway as well as antifungal cytokine production in human monocytes, thereby impeding monocyte‐mediated defenses against fungal infection in immune‐suppressed patients.
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Affiliation(s)
- Kamila Bendíčková
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Federico Tidu
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic.,Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Marco De Zuani
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | | | - Ivana Andrejčinová
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Antonio Pompeiano
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Silvie Bělášková
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Giancarlo Forte
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Teresa Zelante
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
| | - Jan Frič
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
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212
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CRISPR/Cas9-modified hematopoietic stem cells-present and future perspectives for stem cell transplantation. Bone Marrow Transplant 2019; 54:1940-1950. [PMID: 30903024 DOI: 10.1038/s41409-019-0510-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/15/2019] [Accepted: 03/04/2019] [Indexed: 12/23/2022]
Abstract
Allogeneic hematopoietic stem cell transplantation (HSCT) is a standard therapeutic intervention for hematological malignancies and several monogenic diseases. However, this approach has limitations related to lack of a suitable donor, graft-versus-host disease and infectious complications due to immune suppression. On the contrary, autologous HSCT diminishes the negative effects of allogeneic HSCT. Despite the good efficacy, earlier gene therapy trials with autologous HSCs and viral vectors have raised serious safety concerns. However, the CRISPR/Cas9-edited autologous HSCs have been proposed to be an alternative option with a high safety profile. In this review, we summarized the possibility of CRISPR/Cas9-mediated autologous HSCT as a potential treatment option for various diseases supported by preclinical gene-editing studies. Furthermore, we discussed future clinical perspectives and possible clinical grade improvements of CRISPR/cas9-mediated autologous HSCT.
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213
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Heung LJ, Hohl TM. Inflammatory monocytes are detrimental to the host immune response during acute infection with Cryptococcus neoformans. PLoS Pathog 2019; 15:e1007627. [PMID: 30897162 PMCID: PMC6428256 DOI: 10.1371/journal.ppat.1007627] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 02/07/2019] [Indexed: 12/30/2022] Open
Abstract
Cryptococcus neoformans is a leading cause of invasive fungal infections among immunocompromised patients. However, the cellular constituents of the innate immune response that promote clearance versus progression of infection upon respiratory acquisition of C. neoformans remain poorly defined. In this study, we found that during acute C. neoformans infection, CCR2+ Ly6Chi inflammatory monocytes (IM) rapidly infiltrate the lungs and mediate fungal trafficking to lung-draining lymph nodes. Interestingly, this influx of IM is detrimental to the host, since ablating IM or impairing their recruitment to the lungs improves murine survival and reduces fungal proliferation and dissemination. Using a novel conditional gene deletion strategy, we determined that MHC class II expression by IM did not mediate their deleterious impact on the host. Furthermore, although ablation of IM reduced the number of lymphocytes, innate lymphoid cells, and eosinophils in the lungs, the effects of IM were not dependent on these cells. We ascertained that IM in the lungs upregulated transcripts associated with alternatively activated (M2) macrophages in response to C. neoformans, consistent with the model that IM assume a cellular phenotype that is permissive for fungal growth. We also determined that conditional knockout of the prototypical M2 marker arginase 1 in IM and deletion of the M2-associated transcription factor STAT6 were not sufficient to reverse the harmful effects of IM. Overall, our findings indicate that C. neoformans can subvert the fungicidal potential of IM to enable the progression of infection through a mechanism that is not dependent on lymphocyte priming, eosinophil recruitment, or downstream M2 macrophage polarization pathways. These results give us new insight into the plasticity of IM function during fungal infections and the level of control that C. neoformans can exert on host immune responses. Cryptococcus neoformans is a fungus that is prevalent throughout the environment and can cause a fatal infection of the central nervous system when inhaled into the lungs by patients with impaired immune systems. Our understanding of the immune responses that either help clear C. neoformans from the lungs or permit development of disease remains limited. In this study, we used a mouse model of lethal C. neoformans infection to determine that inflammatory monocytes, immune cells that are often among the first responders to infections, actually facilitate the progression of infection rather than clearance. These findings establish a foundation for future work to target the immune response of inflammatory monocytes as a strategy to improve the outcomes of patients that develop C. neoformans infections.
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Affiliation(s)
- Lena J. Heung
- Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, United States of America
- * E-mail: (LJH); (TMH)
| | - Tobias M. Hohl
- Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, United States of America
- Immunology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, New York, United States of America
- * E-mail: (LJH); (TMH)
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214
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Ryder BM, Sandford SK, Manners KM, Dalton JP, Wiles S, Kirman JR. Gr1 int/high Cells Dominate the Early Phagocyte Response to Mycobacterial Lung Infection in Mice. Front Microbiol 2019; 10:402. [PMID: 30906286 PMCID: PMC6418015 DOI: 10.3389/fmicb.2019.00402] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 02/15/2019] [Indexed: 12/12/2022] Open
Abstract
Lung infection by Mycobacterium tuberculosis is characterized by chronic infection of lung-resident macrophages, long considered to be the primary hosts and determinants of the outcome of the early immune response. Although alveolar macrophages are well-known to host intracellular mycobacteria at later stages of disease, little is known about the earliest events of the innate immune response. The phagocytes that take up mycobacteria immediately following infection, and how the early lung phagocyte response is altered by vaccination with M. bovis bacille Calmette-Guérin (BCG) were unknown. Using BCG expressing the bright red fluorescent protein tdTomato and flow cytometry, we modeled early infection in C57BL/6 mice and tracked phagocyte population kinetics and uptake of mycobacteria, to better understand the involvement of specific phagocyte subsets. By 1 day post-infection, dose-dependent accumulation of neutrophils was observed and surprisingly, granulocytes comprised a greater proportion of infected phagocytes than alveolar macrophages. By 7 days post-infection alveolar macrophages had become the dominant BCG-associated phagocytes. Prior mucosal BCG exposure provided immunized mice with greater frequencies and numbers of lung macrophage subsets, and a significantly greater proportion of alveolar macrophages expressed CD11b prior to and following challenge infection. These data provide the first evidence of granulocytes as the dominant infected phagocyte subset early after mycobacterial infection, and highlight enhanced recruitment of lung macrophages as a factor associated with protection in BCG-immunized mice.
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Affiliation(s)
- Brin M Ryder
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Sarah K Sandford
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - Kate M Manners
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
| | - James P Dalton
- Bioluminescent Superbugs Lab, Department of Molecular Medicine and Pathology, University of Auckland, Auckland, New Zealand
| | - Siouxsie Wiles
- Bioluminescent Superbugs Lab, Department of Molecular Medicine and Pathology, University of Auckland, Auckland, New Zealand
| | - Joanna R Kirman
- Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
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215
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Spinal Motor Circuit Synaptic Plasticity after Peripheral Nerve Injury Depends on Microglia Activation and a CCR2 Mechanism. J Neurosci 2019; 39:3412-3433. [PMID: 30833511 DOI: 10.1523/jneurosci.2945-17.2019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 02/03/2019] [Accepted: 02/27/2019] [Indexed: 12/24/2022] Open
Abstract
Peripheral nerve injury results in persistent motor deficits, even after the nerve regenerates and muscles are reinnervated. This lack of functional recovery is partly explained by brain and spinal cord circuit alterations triggered by the injury, but the mechanisms are generally unknown. One example of this plasticity is the die-back in the spinal cord ventral horn of the projections of proprioceptive axons mediating the stretch reflex (Ia afferents). Consequently, Ia information about muscle length and dynamics is lost from ventral spinal circuits, degrading motor performance after nerve regeneration. Simultaneously, there is activation of microglia around the central projections of peripherally injured Ia afferents, suggesting a possible causal relationship between neuroinflammation and Ia axon removal. Therefore, we used mice (both sexes) that allow visualization of microglia (CX3CR1-GFP) and infiltrating peripheral myeloid cells (CCR2-RFP) and related changes in these cells to Ia synaptic losses (identified by VGLUT1 content) on retrogradely labeled motoneurons. Microgliosis around axotomized motoneurons starts and peaks within 2 weeks after nerve transection. Thereafter, this region becomes infiltrated by CCR2 cells, and VGLUT1 synapses are lost in parallel. Immunohistochemistry, flow cytometry, and genetic lineage tracing showed that infiltrating CCR2 cells include T cells, dendritic cells, and monocytes, the latter differentiating into tissue macrophages. VGLUT1 synapses were rescued after attenuating the ventral microglial reaction by removal of colony stimulating factor 1 from motoneurons or in CCR2 global KOs. Thus, both activation of ventral microglia and a CCR2-dependent mechanism are necessary for removal of VGLUT1 synapses and alterations in Ia-circuit function following nerve injuries.SIGNIFICANCE STATEMENT Synaptic plasticity and reorganization of essential motor circuits after a peripheral nerve injury can result in permanent motor deficits due to the removal of sensory Ia afferent synapses from the spinal cord ventral horn. Our data link this major circuit change with the neuroinflammatory reaction that occurs inside the spinal cord following injury to peripheral nerves. We describe that both activation of microglia and recruitment into the spinal cord of blood-derived myeloid cells are necessary for motor circuit synaptic plasticity. This study sheds new light into mechanisms that trigger major network plasticity in CNS regions removed from injury sites and that might prevent full recovery of function, even after successful regeneration.
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216
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Nelli RK, De Koster J, Roberts JN, de Souza J, Lock AL, Raphael W, Agnew D, Contreras GA. Impact of uterine macrophage phenotype on placental retention in dairy cows. Theriogenology 2019; 127:145-152. [DOI: 10.1016/j.theriogenology.2019.01.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 12/26/2018] [Accepted: 01/11/2019] [Indexed: 01/07/2023]
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217
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Saito E, Kuo R, Pearson RM, Gohel N, Cheung B, King NJC, Miller SD, Shea LD. Designing drug-free biodegradable nanoparticles to modulate inflammatory monocytes and neutrophils for ameliorating inflammation. J Control Release 2019; 300:185-196. [PMID: 30822435 DOI: 10.1016/j.jconrel.2019.02.025] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 02/14/2019] [Accepted: 02/19/2019] [Indexed: 12/12/2022]
Abstract
Inflammation associated with autoimmune diseases and chronic injury is an initiating event that leads to tissue degeneration and dysfunction. Inflammatory monocytes and neutrophils systemically circulate and enter inflamed tissue, and pharmaceutical based targeting of these cells has not substantially improved outcomes and has had side effects. Herein, we investigated the design of drug-free biodegradable nanoparticles, notably without any active pharmaceutical ingredient or targeting ligand, that target circulating inflammatory monocytes and neutrophils in the vasculature to inhibit them from migrating into inflamed tissue. Nanoparticles were formed from 50:50 poly(DL-lactide-co-glycolide) (PLG) with two molecular weights (Low, High) and poly(DL-lactide) (PLA) (termed PLG-L, PLG-H, and PDLA, respectively) and were analyzed for their association with monocytes and neutrophils and their impact on disease course along with immune cell trafficking. For particles injected intravenously for 6 consecutive days to mice with experimental autoimmune encephalomyelitis (EAE), PLG-H particles had significantly lower EAE clinical scores than PBS control, while PLG-L and PDLA particles had modest or negligible effect on EAE onset. In vivo and in vitro data suggests that PLG-H particles had high association with immune cells, with preferential association with blood neutrophils relative to other particles. PLG-H particles restrained immune cells from the central nervous system (CNS), with increased accumulation in the spleen, which was not observed for mice receiving PDLA or control treatments. These results demonstrate that the particle composition influences the association with inflammatory monocytes and neutrophils in the vasculature, with the potential to redirect trafficking and ameliorate inflammation.
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Affiliation(s)
- Eiji Saito
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Robert Kuo
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ryan M Pearson
- Department of Pharmaceutical Sciences, University of Maryland, Baltimore, MD 21201, USA
| | - Nishant Gohel
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Brandon Cheung
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Nicholas J C King
- The Discipline of Pathology, School of Medical Science, Bosch Institute, Sydney Medical School, University of Sydney, Sydney, New South Wales 2006, Australia
| | - Stephen D Miller
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; Chemistry of Life Processes Institute (CLP), Northwestern University, Evanston, IL 60208, USA; The Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL 60611, USA.
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA; Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
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218
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Stegelmeier AA, van Vloten JP, Mould RC, Klafuric EM, Minott JA, Wootton SK, Bridle BW, Karimi K. Myeloid Cells during Viral Infections and Inflammation. Viruses 2019; 11:E168. [PMID: 30791481 PMCID: PMC6410039 DOI: 10.3390/v11020168] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 02/15/2019] [Accepted: 02/16/2019] [Indexed: 12/11/2022] Open
Abstract
Myeloid cells represent a diverse range of innate leukocytes that are crucial for mounting successful immune responses against viruses. These cells are responsible for detecting pathogen-associated molecular patterns, thereby initiating a signaling cascade that results in the production of cytokines such as interferons to mitigate infections. The aim of this review is to outline recent advances in our knowledge of the roles that neutrophils and inflammatory monocytes play in initiating and coordinating host responses against viral infections. A focus is placed on myeloid cell development, trafficking and antiviral mechanisms. Although known for promoting inflammation, there is a growing body of literature which demonstrates that myeloid cells can also play critical regulatory or immunosuppressive roles, especially following the elimination of viruses. Additionally, the ability of myeloid cells to control other innate and adaptive leukocytes during viral infections situates these cells as key, yet under-appreciated mediators of pathogenic inflammation that can sometimes trigger cytokine storms. The information presented here should assist researchers in integrating myeloid cell biology into the design of novel and more effective virus-targeted therapies.
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Affiliation(s)
- Ashley A Stegelmeier
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Jacob P van Vloten
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Robert C Mould
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Elaine M Klafuric
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Jessica A Minott
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Sarah K Wootton
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Byram W Bridle
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
| | - Khalil Karimi
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada.
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219
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Fischer KJ, Yajjala VK, Bansal S, Bauer C, Chen R, Sun K. Monocytes Represent One Source of Bacterial Shielding from Antibiotics following Influenza Virus Infection. THE JOURNAL OF IMMUNOLOGY 2019; 202:2027-2034. [PMID: 30745458 DOI: 10.4049/jimmunol.1801471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/26/2019] [Indexed: 12/24/2022]
Abstract
Methicillin-resistant Staphylococcus aureus has emerged as a significant contributor to morbidity and mortality associated with influenza infection. In this study, we show in a mouse model that preceding influenza infection promotes S. aureus resistance to killing by antibiotics. This resistance coincides with influenza-induced accumulation of inflammatory monocytes in the lung. CCR type 2 (CCR2) is responsible for pulmonary monocyte recruitment after influenza infection. We found that antibiotic-treated Ccr2-deficient (Ccr2-/-) mice exhibit significantly improved bacterial control and survival from influenza and methicillin-resistant S. aureus coinfection, despite a delay in viral clearance. Mechanistically, our results from in vivo studies indicate that influenza-induced monocytes serve as reservoirs for intracellular S. aureus survival, thereby promoting bacterial resistance to antibiotic treatment. Blocking CCR2 with a small molecular inhibitor (PF-04178903), in conjunction with antibiotic treatment, enhanced lung bacterial clearance and significantly improved animal survival. Collectively, our study demonstrates that inflammatory monocytes constitute an important and hitherto underappreciated mechanism of the conflicting immune requirements for viral and bacterial clearance by hosts, which subsequently leads to exacerbated outcomes of influenza and S. aureus coinfection.
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Affiliation(s)
- Karl J Fischer
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198-5900
| | - Vijaya Kumar Yajjala
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198-5900
| | - Shruti Bansal
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198-5900
| | - Christopher Bauer
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198-5900
| | - Ruiling Chen
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198-5900
| | - Keer Sun
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE 68198-5900
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220
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Ropert C. How toll-like receptors reveal monocyte plasticity: the cutting edge of antiinflammatory therapy. Cell Mol Life Sci 2019; 76:745-755. [PMID: 30413835 PMCID: PMC11105477 DOI: 10.1007/s00018-018-2959-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 10/23/2018] [Accepted: 10/29/2018] [Indexed: 12/12/2022]
Abstract
Toll-like receptors (TLR)s are central in immune response by recognizing pathogen-associated molecular patterns (PAMP)s. If they are essential to eliminate pathogens in earlier stages of infection, they also might play a role in homeostasis and tissue repair. TLR versatility parallels the plasticity of monocytes, which represent an heterogeneous population of immune cells. They are rapidly recruited to sites of infection and involved in clearance of pathogens and in tissue healing. This review underlines how TLRs have proved to be an interesting tool to study the properties of monocytes and why different therapeutic strategies exploring monocyte plasticity may be relevant in the context of chronic inflammatory disorders.
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Affiliation(s)
- Catherine Ropert
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Pampulha, Belo Horizonte, MG, 31270-910, Brazil.
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221
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Saha S, Basu M, Guin S, Gupta P, Mitterstiller AM, Weiss G, Jana K, Ukil A. Leishmania donovani Exploits Macrophage Heme Oxygenase-1 To Neutralize Oxidative Burst and TLR Signaling-Dependent Host Defense. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2019; 202:827-840. [PMID: 30593539 DOI: 10.4049/jimmunol.1800958] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 11/26/2018] [Indexed: 12/12/2022]
Abstract
Suppression of host oxidative burst is essential for survival of the intracellular parasite Leishmania donovani Screening of macrophage antioxidant enzymes during infection revealed marked upregulation of the heme-degrading enzyme, heme oxygenase-1 (HO-1). Moreover, HO-1-silenced RAW macrophages depicted increased superoxide production and decreased parasite survival. HO-1 induction decreased cellular heme content, thereby inhibiting the heme-dependent maturation of gp91phox, a catalytic component of major reactive oxygen species-producing enzyme NAD(P)H oxidase. Decreased gp91phox expression resulted in reduced stability of p22phox, another component of the catalytic center of NAD(P)H oxidase. Replenishing infected cells with exogenous heme reversed these effects and restored NAD(P)H oxidase activity. Persistent HO-1 expression at late hour of infection prompted us to investigate its effect on other host defense parameters, and inhibition study revealed a reciprocal relationship of HO-1 with host proinflammatory responses. Among all the HO-1-mediated heme degradation products (CO, Fe, and biliverdin), only CO documented potent anti-inflammatory effects. Quenching of CO during infection increased the production of disease-resolving cytokines IL-12 and TNF-α. Coimmunoprecipitation experiments revealed that CO inhibited the interaction of TLR4 with MyD88 and TIR domain-containing adapter-inducing IFN-β, thereby dampening the activation of NF-κB and IFN regulatory factor 3-mediated production of proinflammatory cytokines. Administration of HO-1 inhibitor tin protoporphyrin IX dichloride in infected BALB/c mice led to a decrease in liver and spleen parasite burden along with increased production of IL-12 and TNF-α. These results suggest that HO-1 on one hand inhibits reactive oxygen species generation and on the other hand downregulates host favorable cytokine responses, thereby facilitating intramacrophage parasite survival.
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Affiliation(s)
- Shriya Saha
- Department of Biochemistry, University of Calcutta, Kolkata 700019, India
| | - Moumita Basu
- Department of Biochemistry, University of Calcutta, Kolkata 700019, India
| | - Subham Guin
- Department of Life Science and Biotechnology, Jadavpur University, Kolkata 700032, India
| | - Purnima Gupta
- Infections and Cancer Biology Group, International Agency for Research on Cancer, 69372 Lyon Cedex 08, France
| | - Anna-Maria Mitterstiller
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, 69008 Innsbruck, Austria; and
| | - Guenter Weiss
- Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of Innsbruck, 69008 Innsbruck, Austria; and
| | - Kuladip Jana
- Division of Molecular Medicine, Bose Institute, Kolkata 700054, India
| | - Anindita Ukil
- Department of Biochemistry, University of Calcutta, Kolkata 700019, India;
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222
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Ford J, Hughson A, Lim K, Bardina SV, Lu W, Charo IF, Lim JK, Fowell DJ. CCL7 Is a Negative Regulator of Cutaneous Inflammation Following Leishmania major Infection. Front Immunol 2019; 9:3063. [PMID: 30671055 PMCID: PMC6331479 DOI: 10.3389/fimmu.2018.03063] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 12/11/2018] [Indexed: 12/24/2022] Open
Abstract
The chemokine CCL7 (MCP3) is known to promote the recruitment of many innate immune cell types including monocytes and neutrophils to sites of bacterial and viral infection and eosinophils and basophils to sites of allergic inflammation. CCL7 upregulation has been associated with many inflammatory settings including infection, cardiovascular disease, and the tumor microenvironment. CCL7's pleotropic effects are due in part to its ability to bind numerous chemokine receptors, namely CCR1, CCR2, CCR3, CCR5, and CCR10. CCL7-blockade or CCL7-deficiency is often marked by decreased inflammation and poor pathogen control. In the context of Leishmania major infection, CCL7 is specifically upregulated in the skin one-2 weeks after infection but its role in L. major control is unclear. To determine CCL7's impact on the response to L. major we infected WT and CCL7-/- C57BL/6 mice. L. major infection of CCL7-deficient mice led to an unexpected increase in inflammation in the infected skin 2 weeks post-infection. A broad increase in immune cell subsets was observed but was dominated by enhanced neutrophilic infiltration. Increased neutrophil recruitment was associated with an enhanced IL-17 gene profile in the infected skin. CCL7 was shown to directly antagonize neutrophil migration in vitro and CCL7 add-back in vivo specifically reduced neutrophil influx into the infected skin revealing an unexpected role for CCL7 in limiting neutrophil recruitment during L. major infection. Enhanced neutrophilic infiltration in CCL7-deficient mice changed the balance of L. major infected host cells with an increase in the ratio of infected neutrophils over monocytes/macrophages. To determine the consequence of CCL7 deficiency on L. major control we analyzed parasite load cutaneously at the site of infection and viscerally in the draining LN and spleen. The CCL7-/- mice supported robust cutaneous parasite control similar to their WT C57BL/6 counterparts. In contrast, CCL7-deficiency led to greater parasite dissemination and poor parasite control in the spleen. Our studies reveal a novel role for CCL7 in negatively regulating cutaneous inflammation, specifically neutrophils, early during L. major infection. We propose that CCL7-mediated dampening of the early immune response in the skin may limit the ability of the parasite to disseminate without compromising cutaneous control.
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Affiliation(s)
- Jill Ford
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, Aab Institute of Biomedical Sciences, University of Rochester, Rochester, NY, United States
| | - Angela Hughson
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, Aab Institute of Biomedical Sciences, University of Rochester, Rochester, NY, United States
| | - Kihong Lim
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, Aab Institute of Biomedical Sciences, University of Rochester, Rochester, NY, United States
| | - Susana V Bardina
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Wuyuan Lu
- Department of Biochemistry and Molecular Biology, Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Israel F Charo
- Department of Medicine, Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, United States
| | - Jean K Lim
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Deborah J Fowell
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, Aab Institute of Biomedical Sciences, University of Rochester, Rochester, NY, United States
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223
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Bernareggi D, Pouyanfard S, Kaufman DS. Development of innate immune cells from human pluripotent stem cells. Exp Hematol 2019; 71:13-23. [PMID: 30611869 DOI: 10.1016/j.exphem.2018.12.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 12/23/2018] [Accepted: 12/30/2018] [Indexed: 02/07/2023]
Abstract
Mouse and human pluripotent stem cells have been widely used to study the development of the hematopoietic and immune systems. Although not all cells can be derived with the same efficiency, immune cells such as natural killer (NK) cells and macrophages can be easily produced from PSCs to enable development of new cell-based therapies. NK cells and macrophages are part of the innate immune system, the first line of defense against malignancies and infectious disease. Human embryonic stem cell (hESC)- and induced pluripotent stem cell (iPSC)-derived NK cells can be produced at a clinical scale suitable for translation into clinical trials. Additionally, PSCs can be genetically modified to produce hESC/iPSC-derived human NK cells with enhanced antitumor activity. These engineered NK cells can express a stabilized version of the high-affinity Fc receptor CD16, chimeric antigen receptors, or other strategies to enable more potent and targeted cellular immunotherapies. Moreover, macrophages can also be routinely and efficiently produced from hESCs and iPSCs as a tool to expand our knowledge of the basic biology of these cells. hESC- and iPSC-derived macrophages can also be employed as a novel approach for cancer immunotherapy, as well as a strategy to repair or regenerate diseased and damaged tissues and organs.
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Affiliation(s)
- Davide Bernareggi
- Department of Medicine, Division of Regenerative Medicine, University of California San Diego, CA
| | - Somayeh Pouyanfard
- Department of Medicine, Division of Regenerative Medicine, University of California San Diego, CA
| | - Dan S Kaufman
- Department of Medicine, Division of Regenerative Medicine, University of California San Diego, CA.
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224
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Lung Macrophages: Multifunctional Regulator Cells for Metastatic Cells. Int J Mol Sci 2018; 20:ijms20010116. [PMID: 30597969 PMCID: PMC6337639 DOI: 10.3390/ijms20010116] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 12/21/2018] [Accepted: 12/24/2018] [Indexed: 12/29/2022] Open
Abstract
Metastasis is responsible for most of the cancer-associated deaths and proceeds through multiple steps. Several lines of evidence have established an indispensable involvement of macrophages present at the primary tumor sites in various steps of metastasis, from primary tumor growth to its intravasation into circulation. The lungs encompass a large, dense vascular area and, therefore, are vulnerable to metastasis, particularly, hematogenous ones arising from various types of neoplasms. Lung tissues constitutively contain several types of tissue-resident macrophages and circulating monocytes to counteract potentially harmful exogenous materials, which directly reach through the airway. Recent advances have provided an insight into the ontogenetic, phenotypic, and functional heterogeneity of these lung macrophage and monocyte populations, under resting and inflammatory conditions. In this review, we discuss the ontogeny, trafficking dynamics, and functions of these pulmonary macrophages and monocytes and their potential roles in lung metastasis and measures to combat lung metastasis by targeting these populations.
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225
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Vlacil AK, Schuett J, Schieffer B, Grote K. Variety matters: Diverse functions of monocyte subtypes in vascular inflammation and atherogenesis. Vascul Pharmacol 2018; 113:9-19. [PMID: 30553027 DOI: 10.1016/j.vph.2018.12.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 12/06/2018] [Accepted: 12/07/2018] [Indexed: 12/24/2022]
Abstract
Monocytes are important mediators of the innate immunity by recognizing and attacking especially bacterial pathogens but also play crucial roles in various inflammatory diseases, including vascular inflammation and atherosclerosis. Maturation, differentiation and function of monocytes have been intensively explored for a long time in innumerable experimental and clinical studies. Monocytes do not represent a uniform cell type but could be further subdivided into subpopulations with distinct features and functions. Those subpopulations have been identified in experimental mouse models as well as in humans, albeit distinguished by different cell surface markers. While Ly6C is used for subpopulation differentiation in mice, corresponding human subsets are differentiated by CD14 and CD16. In this review, we specifically focused on new experimental insights from recent years mainly in regard to murine monocyte subpopulations and their roles in vascular inflammation und atherogenesis.
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Affiliation(s)
| | - Jutta Schuett
- Cardiology and Angiology, Philipps-University Marburg, Marburg, Germany
| | | | - Karsten Grote
- Cardiology and Angiology, Philipps-University Marburg, Marburg, Germany.
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226
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Xu Y, Huang L, Kirschman JL, Vanover DA, Tiwari PM, Santangelo PJ, Shen X, Russell DG. Exploitation of Synthetic mRNA To Drive Immune Effector Cell Recruitment and Functional Reprogramming In Vivo. THE JOURNAL OF IMMUNOLOGY 2018; 202:608-617. [PMID: 30541883 DOI: 10.4049/jimmunol.1800924] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/05/2018] [Indexed: 12/24/2022]
Abstract
Therapeutic strategies based on in vitro-transcribed mRNA (IVT) are attractive because they avoid the permanent signature of genomic integration that is associated with DNA-based therapy and result in the transient production of proteins of interest. To date, IVT has mainly been used in vaccination protocols to generate immune responses to foreign Ags. In this "proof-of-principle" study, we explore a strategy of combinatorial IVT to recruit and reprogram immune effector cells to acquire divergent biological functions in mice in vivo. First, we demonstrate that synthetic mRNA encoding CCL3 is able to recruit murine monocytes in a nonprogrammed state, exhibiting neither bactericidal nor tissue-repairing properties. However, upon addition of either Ifn-γ mRNA or Il-4 mRNA, we successfully polarized these cells to adopt either M1 or M2 macrophage activation phenotypes. This cellular reprogramming was demonstrated through increased expression of known surface markers and through the differential modulation of NADPH oxidase activity, or the superoxide burst. Our study demonstrates how IVT strategies can be combined to recruit and reprogram immune effector cells that have the capacity to fulfill complex biological tasks in vivo.
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Affiliation(s)
- Yitian Xu
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853.,Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853
| | - Lu Huang
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853
| | - Jonathan L Kirschman
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332
| | - Daryll A Vanover
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332
| | - Pooja M Tiwari
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332
| | - Philip J Santangelo
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332
| | - Xiling Shen
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853.,School of Electrical and Computer Engineering, Cornell University, Ithaca, NY 14853; and.,Department of Biomedical Engineering, Duke University, Durham, NC 27708
| | - David G Russell
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853;
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227
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Hersh J, Yang SH. Glia-immune interactions post-ischemic stroke and potential therapies. Exp Biol Med (Maywood) 2018; 243:1302-1312. [PMID: 30537868 DOI: 10.1177/1535370218818172] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
IMPACT STATEMENT This article reviews glial cell interactions with the immune system post-ischemic stroke. Research has shown that glial cells in the brain play a role in altering phenotypes of other glial cells and have downstream immune cell targets ultimately regulating a neuroinflammatory response. These interactions may play a deleterious as well as beneficial role in stroke recovery. Furthermore, they may provide a novel way to approach potential therapies, since current stroke drug therapy is limited to only one Food and Drug Administration-approved drug complicated by a narrow therapeutic window. Until this point, most research has emphasized neuroimmune interactions, but little focus has been on bidirectional communication of glial-immune interactions in the ischemic brain. By expanding our understanding of these interactions through a compilation of glial cell effects, we may be able to pinpoint major modulating factors in brain homeostasis to maintain or discover ways to suppress irreversible ischemic damage and improve brain repair.
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Affiliation(s)
- Jessica Hersh
- Department of Neuroscience and Pharmacology, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Shao-Hua Yang
- Department of Neuroscience and Pharmacology, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
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228
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Golda A, Kosikowska-Adamus P, Babyak O, Lech M, Wysocka M, Lesner A, Potempa J, Koziel J. Conjugate of Enkephalin and Temporin Peptides as a Novel Therapeutic Agent for Sepsis. Bioconjug Chem 2018; 29:4127-4139. [PMID: 30525485 DOI: 10.1021/acs.bioconjchem.8b00763] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Antimicrobial peptides (AMPs) exhibit a wide spectrum of actions, ranging from a direct bactericidal effect to multifunctional activities as immune effector molecules. The aim of this study was to examine the anti-inflammatory properties of a DAL-PEG-DK5 conjugate composed of a lysine-rich derivative of amphibian temporin-1CEb (DK5) and dalargin (DAL), the synthetic Leu-enkephalin analogue. Detailed study of the endotoxin-neutralizing activity of the peptide revealed that DAL-PEG-DK5 interacts with LPS and the LPS binding protein (LBP). Moreover, DAL-PEG-DK5 prevented dimerization of TLR4 at the macrophage surface upon LPS stimulation. This inhibited activation of the NF-κB signaling pathway and markedly reduced pro-inflammatory cytokine production. Finally, we showed that aggregation of DAL-PEG-DK5 into amyloid-like structures induced by LPS neutralized the endotoxin proinflammatory activity. Consequently, DAL-PEG-DK5 reduced morbidity and mortality in vivo, in a mouse model of endotoxin-induced septic shock. Collectively, the data suggest that DAL-PEG-DK5 is a promising therapeutic compound for sepsis.
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Affiliation(s)
- A Golda
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology , Jagiellonian University , 30-387 Krakow , Poland
| | | | - O Babyak
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology , Jagiellonian University , 30-387 Krakow , Poland
| | - M Lech
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology , Jagiellonian University , 30-387 Krakow , Poland.,Department of Nephrology, Medizinische Klinik und Poliklinik IV , Klinikum der Ludwig-Maximilians-Universität München , 80366 Munich , Germany
| | - M Wysocka
- Faculty of Chemistry , University of Gdansk , 80-309 Gdansk , Poland
| | - A Lesner
- Faculty of Chemistry , University of Gdansk , 80-309 Gdansk , Poland
| | - J Potempa
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology , Jagiellonian University , 30-387 Krakow , Poland.,Center of Oral Health and Systemic Disease, University of Louisville School of Dentistry , University of Louisville , Louisville , Kentucky 40202 , United States
| | - J Koziel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology , Jagiellonian University , 30-387 Krakow , Poland
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229
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García-Culebras A, Durán-Laforet V, Peña-Martínez C, Ballesteros I, Pradillo JM, Díaz-Guzmán J, Lizasoain I, Moro MA. Myeloid cells as therapeutic targets in neuroinflammation after stroke: Specific roles of neutrophils and neutrophil-platelet interactions. J Cereb Blood Flow Metab 2018; 38:2150-2164. [PMID: 30129391 PMCID: PMC6282223 DOI: 10.1177/0271678x18795789] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Ischemic brain injury causes a local inflammatory response, involving the activation of resident brain cells such as microglia and the recruitment of infiltrating immune cells. Increasing evidence supports that plasticity of the myeloid cell lineage is determinant for the specific role of these cells on stroke outcome, from initiation and maintenance to resolution of post-ischemic inflammation. The aim of this review is to summarize some of the key characteristics of these cells and the mechanisms for their recruitment into the injured brain through interactions with platelets, endothelial cells and other leukocytes. Also, we discuss the existence of different leukocyte subsets in the ischemic tissue and, specifically, the impact of different myeloid phenotypes on stroke outcome, with special emphasis on neutrophils and their interplay with platelets. Knowledge of these cellular phenotypes and interactions may pave the way to new therapies able to promote protective immune responses and tissue repair after cerebral ischemia.
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Affiliation(s)
- Alicia García-Culebras
- 1 Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid (UCM), Madrid, Spain.,2 Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.,3 Instituto Universitario de Investigación en Neuroquímica (IUIN), UCM, Madrid, Spain
| | - Violeta Durán-Laforet
- 1 Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid (UCM), Madrid, Spain.,2 Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.,3 Instituto Universitario de Investigación en Neuroquímica (IUIN), UCM, Madrid, Spain
| | - Carolina Peña-Martínez
- 1 Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid (UCM), Madrid, Spain.,2 Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.,3 Instituto Universitario de Investigación en Neuroquímica (IUIN), UCM, Madrid, Spain
| | - Iván Ballesteros
- 4 Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Jesús M Pradillo
- 1 Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid (UCM), Madrid, Spain.,2 Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.,3 Instituto Universitario de Investigación en Neuroquímica (IUIN), UCM, Madrid, Spain
| | - Jaime Díaz-Guzmán
- 2 Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.,5 Servicio de Neurología, Hospital Universitario Doce de Octubre, Madrid, Spain
| | - Ignacio Lizasoain
- 1 Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid (UCM), Madrid, Spain.,2 Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.,3 Instituto Universitario de Investigación en Neuroquímica (IUIN), UCM, Madrid, Spain
| | - María A Moro
- 1 Departamento de Farmacología y Toxicología, Facultad de Medicina, Universidad Complutense de Madrid (UCM), Madrid, Spain.,2 Instituto de Investigación Hospital 12 de Octubre (i+12), Madrid, Spain.,3 Instituto Universitario de Investigación en Neuroquímica (IUIN), UCM, Madrid, Spain
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230
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Yang Y, Tu ZK, Liu XK, Zhang P. Mononuclear phagocyte system in hepatitis C virus infection. World J Gastroenterol 2018; 24:4962-4973. [PMID: 30510371 PMCID: PMC6262249 DOI: 10.3748/wjg.v24.i44.4962] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/30/2018] [Accepted: 11/08/2018] [Indexed: 02/06/2023] Open
Abstract
The mononuclear phagocyte system (MPS), which consists of monocytes, dendritic cells (DCs), and macrophages, plays a vital role in the innate immune defense against pathogens. Hepatitis C virus (HCV) is efficient in evading the host immunity, thereby facilitating its development into chronic infection. Chronic HCV infection is the leading cause of end-stage liver diseases, liver cirrhosis, and hepatocellular carcinoma. Acquired immune response was regarded as the key factor to eradicate HCV. However, innate immunity can regulate the acquired immune response. Innate immunity-derived cytokines shape the adaptive immunity by regulating T-cell differentiation, which determines the outcome of acute HCV infection. Inhibition of HCV-specific T-cell responses is one of the most important strategies for immune system evasion. It is meaningful to illustrate the role of innate immune response in HCV infection. With the MPS being the important factor in innate immunity, therefore, understanding the role of the MPS in HCV infection will shed light on the pathophysiology of chronic HCV infection. In this review, we outline the impact of HCV infection on the MPS and cytokine production. We discuss how HCV is detected by the MPS and describe the function and impairment of MPS components in HCV infection.
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Affiliation(s)
- Yu Yang
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Zheng-Kun Tu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun 130061, Jilin Province, China
| | - Xing-Kai Liu
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
| | - Ping Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin Province, China
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231
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Protective effects of a traditional herbal extract from Stellaria dichotoma var. lanceolata against Mycobacterium abscessus infections. PLoS One 2018; 13:e0207696. [PMID: 30452471 PMCID: PMC6242687 DOI: 10.1371/journal.pone.0207696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 11/05/2018] [Indexed: 11/24/2022] Open
Abstract
Stellaria dichotoma var. lanceolata (SdLv), a member of the Caryophyllaceae, is a traditional herbal medicine that has been used to treat fever, night sweats, and malaria in East Asia. Inflammation plays an essential role in both host defense and pathogenesis during infection by diverse intracellular pathogens. Herein, we showed that an herbal extract from SdLv effectively attenuated inflammatory responses from infection of Mycobacterium abscessus (Mab), but not Toxoplasma gondii (T. gondii). In primary murine macrophages, Mab infection resulted in the rapid activation of nuclear factor (NF)-κB and mitogen-activated protein kinase (MAPK), as well as in the generation of proinflammatory cytokines, such as tumor necrosis factor α and interleukin-6, which were all significantly inhibited by pretreatment with SdLv. However, herbal extracts from Bupleurum chinense DC. (Buch) or Bupleurum falcatum L. (Bufa) did not affect M. abs-induced activation of proinflammatory responses. Importantly, we demonstrated that generation of intracellular reactive oxygen species, which are important signaling intermediaries in the activation of NF-κB and the MAPK signaling pathway, was rapidly increased in Mab-infected macrophages, and this was effectively suppressed by pretreatment with SdLv, but not Buch and Bufa. We further found that the treatment of Buch and Bufa, but not SdLv, led to the activation of NF-κB and the MAPK signaling pathway and the generation of intracellular reactive oxygen species. Moreover, oral administration of SdLv significantly reduced lethality in Mab-infected mice. Collectively, these results suggest the possible use of SdLv as an effective treatment for Mab infection.
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232
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Safronova A, Araujo A, Camanzo ET, Moon TJ, Elliott MR, Beiting DP, Yarovinsky F. Alarmin S100A11 initiates a chemokine response to the human pathogen Toxoplasma gondii. Nat Immunol 2018; 20:64-72. [PMID: 30455460 PMCID: PMC6291348 DOI: 10.1038/s41590-018-0250-8] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 10/01/2018] [Indexed: 12/31/2022]
Abstract
Toxoplasma gondii is a common protozoan parasite that infects up to one-third of the world’s population. Notably, very little is known about innate immune-sensing mechanisms for this obligate intracellular parasite by human cells. Here, by applying an unbiased biochemical screening approach, we have identified that human monocytes recognized the presence of T. gondii infection via detection of the alarmin S100A11 protein, which is released from parasite-infected cells via caspase-1-dependent mechanisms. S100A11 induced a potent chemokine response to T. gondii via engagement of its receptor RAGE and regulated monocyte recruitment in vivo by inducing expression of the chemokine CCL2. Our experiments have revealed a sensing system for T. gondii by human cells that is based on detection infection-mediated release of alarmin S100A11 and RAGE-dependent induction of CCL2, a crucial chemokine required for host resistance to the parasite.
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Affiliation(s)
- Alexandra Safronova
- Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, USA
| | - Alessandra Araujo
- Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, USA
| | - Ellie T Camanzo
- Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, USA
| | - Taylor J Moon
- Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, USA
| | - Michael R Elliott
- Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, USA
| | - Daniel P Beiting
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Felix Yarovinsky
- Center for Vaccine Biology and Immunology, Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, USA.
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233
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Garbacz K, Jarzembowski T, Kwapisz E, Daca A, Witkowski J. Do the oral Staphylococcus aureus strains from denture wearers have a greater pathogenicity potential? J Oral Microbiol 2018; 11:1536193. [PMID: 30598731 PMCID: PMC6225501 DOI: 10.1080/20002297.2018.1536193] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/21/2018] [Accepted: 10/10/2018] [Indexed: 12/24/2022] Open
Abstract
We used flow cytometry to compare the phagocytic activity of monocytes against Staphylococcus aureus strains (both biofilm and planktonic cells) isolated from denture wearers and non-wearers. Staphylococcal strains were cultured in Brain Heart Infusion broth in both planktonic and biofilm form and were stained with a fluorescent reporter (propidium iodide) and incubated with monocytes. The fluorescence of the monocytes containing phagocytized bacteria was determined by flow cytometry and normalized to that of the bacterial strains used in the experiment. Staphylococcal strains from denture wearers caused greater activation of monocytes but were less prone to phagocytosis. The percentage of monocytes containing bacterial cells after exposition to staphylococcal strains varied from 2.7% to 81.4% for planktonic cells. For biofilm-released cells, this value ranged from 0.6% to 36.2%. The effectiveness of phagocytosis, estimated based on an increase in monocyte fluorescence, amounted to 32.4 and 71 FL2 units for the biofilm and planktonic cells, respectively. The lesser efficiency of phagocytosis against biofilm S. aureus in denture wearers suggests that they might have been colonized with the strains which were less prone to eradication than those from non-wearers.
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Affiliation(s)
- Katarzyna Garbacz
- Department of Oral Microbiology, Faculty of Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Tomasz Jarzembowski
- Department of Medical Microbiology, Faculty of Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Ewa Kwapisz
- Department of Oral Microbiology, Faculty of Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Agnieszka Daca
- Department of Pathology and Experimental Rheumatology, Faculty of Medicine, Medical University of Gdańsk, Gdańsk, Poland
| | - Jacek Witkowski
- Department of Pathophysiology, Faculty of Medicine, Medical University of Gdańsk, Gdańsk, Poland
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234
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Stenzel P, Nagorsen K, Bernd J, Leppert U, Zakrzewicz A, Berkholz J. ZNF580 - a brake on Interleukin-6. JOURNAL OF INFLAMMATION-LONDON 2018; 15:20. [PMID: 30386182 PMCID: PMC6198383 DOI: 10.1186/s12950-018-0196-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 10/01/2018] [Indexed: 12/17/2022]
Abstract
Background Zinc finger protein 580 (ZNF580) was reported to modulate angiogenesis, endothelial homeostasis and blood pressure control. ZNF580 regulated genes include VEGF-A and IL-8. However, it is unknown if ZNF580 could play a role during inflammation. The aim of this study was to find out if ZNF580 affects the expression of IL-6, if it occurs in monocytic cells and responds to inflammatory mediators. Results Overexpression of ZNF580 reduced LPS-induced promotor activity of IL-6. Consistently, overexpression of ZNF580 reduced by half the LPS-induced expression of IL-6. ZNF580 was strongly expressed in the nucleus of MonoMac6, a human monocytic cell line. LPS-stimulated IL-6 secretion increased when ZNF580 was suppressed with siRNA. After stimulation of MonoMac6 with LPS for 24 h, ZNF580 negatively correlated with the amount of secreted IL-6. In response to LPS, ZNF580 was increased within the first 8 h, followed by a marked decrease after 16 h. This decrease coincided with sustained IL-6 production. Conclusion This study demonstrated that ZNF580 inhibits LPS-induced expression of IL-6. ZNF580 was highly expressed in monocytic cells and therefore may contribute to the modulation of its IL-6 production, at least in response to LPS. This suggests cooperation between ZNF580 and NFκB, which could play a role during sepsis.
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Affiliation(s)
- Philipp Stenzel
- 1Institute of Physiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Insitute of Health, Virchowweg 6/ CCO, Charitéplatz 1, 10117 Berlin, Germany.,2Institute of Pathology, Universitätsmedizin Mainz, Mainz, Germany
| | - Kaj Nagorsen
- 1Institute of Physiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Insitute of Health, Virchowweg 6/ CCO, Charitéplatz 1, 10117 Berlin, Germany
| | - Jonathan Bernd
- 1Institute of Physiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Insitute of Health, Virchowweg 6/ CCO, Charitéplatz 1, 10117 Berlin, Germany
| | - Ulrike Leppert
- 1Institute of Physiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Insitute of Health, Virchowweg 6/ CCO, Charitéplatz 1, 10117 Berlin, Germany
| | - Andreas Zakrzewicz
- 1Institute of Physiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Insitute of Health, Virchowweg 6/ CCO, Charitéplatz 1, 10117 Berlin, Germany
| | - Janine Berkholz
- 1Institute of Physiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Insitute of Health, Virchowweg 6/ CCO, Charitéplatz 1, 10117 Berlin, Germany
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The RNA binding protein Sam68 controls T helper 1 differentiation and anti-mycobacterial response through modulation of miR-29. Cell Death Differ 2018; 26:1169-1180. [PMID: 30258098 DOI: 10.1038/s41418-018-0201-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 08/08/2018] [Accepted: 08/27/2018] [Indexed: 12/24/2022] Open
Abstract
Polarization of naive T cells into interferon (IFN)-γ-producing T helper 1 (Th1) cells is an essential event in the inflammatory response to pathogens. Herein, we identify the RNA binding protein Sam68 as a specific modulator of Th1 differentiation. Sam68-knockout (ko) naive T cells are strongly defective in IL-12-mediated Th1 polarization and express low levels of T-bet and Eomes. Consequently, Sam68-ko Th1 cells are significantly impaired in IFN-γ production. Moreover, we found that Sam68 is required for the induction of an inflammatory Th1 response during Mycobacterium bovis Bacillus Calmette-Guerin (BCG) infection, thus limiting bacterial dissemination in the lungs. Mechanistically, Sam68 directly binds to the microRNA miR-29, a negative regulator of Th1 response, and inhibits its expression during BCG infection. These findings uncover a novel post-transcriptional mechanism required for the Th1-mediated defense against intracellular pathogens and identify a new function for Sam68 in the regulation of the immune response.
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236
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IL-27 amplifies cytokine responses to Gram-negative bacterial products and Salmonella typhimurium infection. Sci Rep 2018; 8:13704. [PMID: 30209294 PMCID: PMC6135775 DOI: 10.1038/s41598-018-32007-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 08/29/2018] [Indexed: 02/06/2023] Open
Abstract
Cytokine responses from monocytes and macrophages exposed to bacteria are of particular importance in innate immunity. Focusing on the impact of the immunoregulatory cytokine interleukin (IL)-27 on control of innate immune system responses, we examined human immune responses to bacterial products and bacterial infection by E. coli and S. typhimurium. Since the effect of IL-27 treatment in human myeloid cells infected with bacteria is understudied, we treated human monocytes and macrophages with IL-27 and either LPS, flagellin, or bacteria, to investigate the effect on inflammatory signaling and cytokine responses. We determined that simultaneous stimulation with IL-27 and LPS derived from E. coli or S. typhimurium resulted in enhanced IL-12p40, TNF-α, and IL-6 expression compared to that by LPS alone. To elucidate if IL-27 manipulated the cellular response to infection with bacteria, we infected IL-27 treated human macrophages with S. typhimurium. While IL-27 did not affect susceptibility to S. typhimurium infection or S. typhimurium-induced cell death, IL-27 significantly enhanced proinflammatory cytokine production in infected cells. Taken together, we highlight a role for IL-27 in modulating innate immune responses to bacterial infection.
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237
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Teskey G, Cao R, Islamoglu H, Medina A, Prasad C, Prasad R, Sathananthan A, Fraix M, Subbian S, Zhong L, Venketaraman V. The Synergistic Effects of the Glutathione Precursor, NAC and First-Line Antibiotics in the Granulomatous Response Against Mycobacterium tuberculosis. Front Immunol 2018; 9:2069. [PMID: 30258443 PMCID: PMC6144952 DOI: 10.3389/fimmu.2018.02069] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 08/21/2018] [Indexed: 12/24/2022] Open
Abstract
Mycobacterium tuberculosis (M. tb), the causative bacterial agent responsible for tuberculosis (TB) continues to afflict millions of people worldwide. Although the human immune system plays a critical role in containing M. tb infection, elimination proves immensely more challenging. Consequently, there has been a worldwide effort to eradicate, and limit the spread of M. tb through the conventional use of first-line antibiotics. Unfortunately, with the emergence of drug resistant and multi-drug resistant strains of M. tb the archetypical antibiotics no longer provide the same ascendancy as they once did. Furthermore, when administered, these first-line antibiotics commonly present severe complications and side effects. The biological antioxidant glutathione (GSH) however, has been demonstrated to have a profound mycobactericidal effect with no reported adverse consequences. Therefore, we examined if N-Acetyl Cysteine (NAC), the molecular precursor to GSH, when supplemented in combination with suboptimal levels of standalone first-line antibiotics would be sufficient to completely clear M. tb infection within in vitro derived granulomas from healthy subjects and individuals with type 2 diabetes (T2DM). Our results revealed that by virtue of immune modulation, the addition of NAC to subprime levels of isoniazid (INH) and rifampicin (RIF) was indeed capable of inducing complete clearance of M. tb among healthy individuals.
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Affiliation(s)
- Garrett Teskey
- Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, CA, United States
| | - Ruoqiong Cao
- College of life Sciences, Hebei University, Baoding, China.,Department of Basic Medical Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA, United States
| | - Hicret Islamoglu
- Department of Biological Sciences, California State Polytechnic University, Pomona, CA, United States
| | - Albert Medina
- Department of Internal Medicine, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA, United States
| | - Chaya Prasad
- Department of Clinical Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA, United States
| | - Ramaa Prasad
- Department of Clinical Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA, United States
| | - Airani Sathananthan
- Department of Internal Medicine, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA, United States
| | - Marcel Fraix
- Department of Clinical Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA, United States
| | - Selvakumar Subbian
- Public Health Research Institute (PHRI), New Jersey Medical School, Rutgers University, Newark, NJ, United States
| | - Li Zhong
- College of life Sciences, Hebei University, Baoding, China.,Graduate College of Biomedical Sciences, Western University of Health Sciences, Pomona, CA, United States.,Department of Basic Medical Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA, United States
| | - Vishwanath Venketaraman
- College of life Sciences, Hebei University, Baoding, China.,Department of Basic Medical Sciences, College of Osteopathic Medicine of the Pacific, Western University of Health Sciences, Pomona, CA, United States
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238
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Yue Y, Nabar NR, Shi CS, Kamenyeva O, Xiao X, Hwang IY, Wang M, Kehrl JH. SARS-Coronavirus Open Reading Frame-3a drives multimodal necrotic cell death. Cell Death Dis 2018. [PMID: 30185776 DOI: 10.1038/s41419‐018‐0917‐y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The molecular mechanisms underlying the severe lung pathology that occurs during SARS-CoV infections remain incompletely understood. The largest of the SARS-CoV accessory protein open reading frames (SARS 3a) oligomerizes, dynamically inserting into late endosomal, lysosomal, and trans-Golgi-network membranes. While previously implicated in a non-inflammatory apoptotic cell death pathway, here we extend the range of SARS 3a pathophysiologic targets by examining its effects on necrotic cell death pathways. We show that SARS 3a interacts with Receptor Interacting Protein 3 (Rip3), which augments the oligomerization of SARS 3a helping drive necrotic cell death. In addition, by inserting into lysosomal membranes SARS 3a triggers lysosomal damage and dysfunction. Consequently, Transcription Factor EB (TFEB) translocates to the nucleus increasing the transcription of autophagy- and lysosome-related genes. Finally, SARS 3a activates caspase-1 either directly or via an enhanced potassium efflux, which triggers NLRP3 inflammasome assembly. In summary, Rip3-mediated oligomerization of SARS 3a causes necrotic cell death, lysosomal damage, and caspase-1 activation-all likely contributing to the clinical manifestations of SARS-CoV infection.
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Affiliation(s)
- Yuan Yue
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.,B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Neel R Nabar
- B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA. .,Department of Molecular, Tumor, and Cell Biology, Karolinska Institutet, Stockholm, Sweden, 17165.
| | - Chong-Shan Shi
- B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Olena Kamenyeva
- Biological Imaging Section, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Xun Xiao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.,B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Il-Young Hwang
- B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Min Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - John H Kehrl
- B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA.
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239
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Yue Y, Nabar NR, Shi CS, Kamenyeva O, Xiao X, Hwang IY, Wang M, Kehrl JH. SARS-Coronavirus Open Reading Frame-3a drives multimodal necrotic cell death. Cell Death Dis 2018; 9:904. [PMID: 30185776 PMCID: PMC6125346 DOI: 10.1038/s41419-018-0917-y] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/29/2018] [Accepted: 07/22/2018] [Indexed: 02/05/2023]
Abstract
The molecular mechanisms underlying the severe lung pathology that occurs during SARS-CoV infections remain incompletely understood. The largest of the SARS-CoV accessory protein open reading frames (SARS 3a) oligomerizes, dynamically inserting into late endosomal, lysosomal, and trans-Golgi-network membranes. While previously implicated in a non-inflammatory apoptotic cell death pathway, here we extend the range of SARS 3a pathophysiologic targets by examining its effects on necrotic cell death pathways. We show that SARS 3a interacts with Receptor Interacting Protein 3 (Rip3), which augments the oligomerization of SARS 3a helping drive necrotic cell death. In addition, by inserting into lysosomal membranes SARS 3a triggers lysosomal damage and dysfunction. Consequently, Transcription Factor EB (TFEB) translocates to the nucleus increasing the transcription of autophagy- and lysosome-related genes. Finally, SARS 3a activates caspase-1 either directly or via an enhanced potassium efflux, which triggers NLRP3 inflammasome assembly. In summary, Rip3-mediated oligomerization of SARS 3a causes necrotic cell death, lysosomal damage, and caspase-1 activation—all likely contributing to the clinical manifestations of SARS-CoV infection.
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Affiliation(s)
- Yuan Yue
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.,B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Neel R Nabar
- B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA. .,Department of Molecular, Tumor, and Cell Biology, Karolinska Institutet, Stockholm, Sweden, 17165.
| | - Chong-Shan Shi
- B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Olena Kamenyeva
- Biological Imaging Section, Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Xun Xiao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.,B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Il-Young Hwang
- B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Min Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - John H Kehrl
- B Cell Molecular Immunology Section, Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA.
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240
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Jacometo C, Alharthi A, Zhou Z, Luchini D, Loor J. Maternal supply of methionine during late pregnancy is associated with changes in immune function and abundance of microRNA and mRNA in Holstein calf polymorphonuclear leukocytes. J Dairy Sci 2018; 101:8146-8158. [DOI: 10.3168/jds.2018-14428] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 05/02/2018] [Indexed: 12/12/2022]
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241
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Michlmayr D, Pak TR, Rahman AH, Amir EAD, Kim EY, Kim-Schulze S, Suprun M, Stewart MG, Thomas GP, Balmaseda A, Wang L, Zhu J, Suaréz-Fariñas M, Wolinsky SM, Kasarskis A, Harris E. Comprehensive innate immune profiling of chikungunya virus infection in pediatric cases. Mol Syst Biol 2018; 14:e7862. [PMID: 30150281 PMCID: PMC6110311 DOI: 10.15252/msb.20177862] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 05/31/2018] [Accepted: 06/29/2018] [Indexed: 12/11/2022] Open
Abstract
Chikungunya virus (CHIKV) is a mosquito-borne alphavirus that causes global epidemics of debilitating disease worldwide. To gain functional insight into the host cellular genes required for virus infection, we performed whole-blood RNA-seq, 37-plex mass cytometry of peripheral blood mononuclear cells (PBMCs), and serum cytokine measurements of acute- and convalescent-phase samples obtained from 42 children naturally infected with CHIKV Semi-supervised classification and clustering of single-cell events into 57 sub-communities of canonical leukocyte phenotypes revealed a monocyte-driven response to acute infection, with the greatest expansions in "intermediate" CD14++CD16+ monocytes and an activated subpopulation of CD14+ monocytes. Increases in acute-phase CHIKV envelope protein E2 expression were highest for monocytes and dendritic cells. Serum cytokine measurements confirmed significant acute-phase upregulation of monocyte chemoattractants. Distinct transcriptomic signatures were associated with infection timepoint, as well as convalescent-phase anti-CHIKV antibody titer, acute-phase viremia, and symptom severity. We present a multiscale network that summarizes all observed modulations across cellular and transcriptomic levels and their interactions with clinical outcomes, providing a uniquely global view of the biomolecular landscape of human CHIKV infection.
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Affiliation(s)
- Daniela Michlmayr
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California Berkeley, Berkeley, CA, USA
| | - Theodore R Pak
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Adeeb H Rahman
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Human Immune Monitoring Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - El-Ad David Amir
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Human Immune Monitoring Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Eun-Young Kim
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Seunghee Kim-Schulze
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Human Immune Monitoring Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Maria Suprun
- Department of Population Health and Science Policy, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Michael G Stewart
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Guajira P Thomas
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Angel Balmaseda
- Laboratorio Nacional de Virología, Centro Nacional de Diagnóstico y Referencia, Ministerio de Salud, Managua, Nicaragua
| | - Li Wang
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jun Zhu
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Mayte Suaréz-Fariñas
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Population Health and Science Policy, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Steven M Wolinsky
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Andrew Kasarskis
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Eva Harris
- Division of Infectious Diseases and Vaccinology, School of Public Health, University of California Berkeley, Berkeley, CA, USA
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242
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Perez-Shibayama C, Gil-Cruz C, Cheng HW, Onder L, Printz A, Mörbe U, Novkovic M, Li C, Lopez-Macias C, Buechler MB, Turley SJ, Mack M, Soneson C, Robinson MD, Scandella E, Gommerman J, Ludewig B. Fibroblastic reticular cells initiate immune responses in visceral adipose tissues and secure peritoneal immunity. Sci Immunol 2018; 3:3/26/eaar4539. [DOI: 10.1126/sciimmunol.aar4539] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 04/18/2018] [Accepted: 06/07/2018] [Indexed: 12/19/2022]
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243
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Endogenous Protection from Ischemic Brain Injury by Preconditioned Monocytes. J Neurosci 2018; 38:6722-6736. [PMID: 29946039 DOI: 10.1523/jneurosci.0324-18.2018] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 06/09/2018] [Accepted: 06/18/2018] [Indexed: 12/24/2022] Open
Abstract
Exposure to low-dose lipopolysaccharide (LPS) before cerebral ischemia is neuroprotective in stroke models, a phenomenon termed preconditioning (PC). Although it is well established that LPS-PC induces central and peripheral immune responses, the cellular mechanisms modulating ischemic injury remain unclear. Here, we investigated the role of immune cells in the brain protection afforded by PC and tested whether monocytes may be reprogrammed by ex vivo LPS exposure, thus modulating inflammatory injury after cerebral ischemia in male mice. We found that systemic injection of low-dose LPS induces a Ly6Chi monocyte response that protects the brain after transient middle cerebral artery occlusion (MCAO) in mice. Remarkably, adoptive transfer of monocytes isolated from preconditioned mice into naive mice 7 h after transient MCAO reduced brain injury. Gene expression and functional studies showed that IL-10, inducible nitric oxide synthase, and CCR2 in monocytes are essential for neuroprotection. This protective activity was elicited even if mouse or human monocytes were exposed ex vivo to LPS and then injected into male mice after stroke. Cell-tracking studies showed that protective monocytes are mobilized from the spleen and reach the brain and meninges, where they suppress postischemic inflammation and neutrophil influx into the brain parenchyma. Our findings unveil a previously unrecognized subpopulation of splenic monocytes capable of protecting the brain with an extended therapeutic window and provide the rationale for cell therapies based on the delivery of autologous or allogeneic protective monocytes in patients after ischemic stroke.SIGNIFICANCE STATEMENT Inflammation is a key component of the pathophysiology of the brain in stroke, a leading cause of death and disability with limited therapeutic options. Here, we investigate endogenous mechanisms of protection against cerebral ischemia. Using lipopolysaccharide (LPS) preconditioning (PC) as an approach to induce ischemic tolerance in mice, we found generation of neuroprotective monocytes within the spleen, from which they traffic to the brain and meninges, suppressing postischemic inflammation. Importantly, systemic LPS-PC can be mimicked by adoptive transfer of in vitro-preconditioned mouse or human monocytes at translational relevant time points after stroke. This model of neuroprotection may facilitate clinical efforts to increase the efficacy of BM mononuclear cell treatments in acute neurological diseases such as cerebral ischemia.
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244
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Champion TC, Partridge LJ, Ong SM, Malleret B, Wong SC, Monk PN. Monocyte Subsets Have Distinct Patterns of Tetraspanin Expression and Different Capacities to Form Multinucleate Giant Cells. Front Immunol 2018; 9:1247. [PMID: 29937768 PMCID: PMC6002745 DOI: 10.3389/fimmu.2018.01247] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 05/17/2018] [Indexed: 12/24/2022] Open
Abstract
Monocytes are able to undergo homotypic fusion to produce different types of multinucleated giant cells, such as Langhans giant cells in response to M. tuberculosis infection or foreign body giant cells in response to implanted biomaterials. Monocyte fusion is highly coordinated and complex, with various soluble, intracellular, and cell-surface components mediating different stages of the process. Tetraspanins, such as CD9, CD63, and CD81, are known to be involved in cell:cell fusion and have been suggested to play a role in regulating homotypic monocyte fusion. However, peripheral human monocytes are not homogenous: they exist as a heterogeneous population consisting of three subsets, classical (CD14++CD16-), intermediate (CD14++CD16+), and non-classical (CD14+CD16+), at steady state. During infection with mycobacteria, the circulating populations of intermediate and non-classical monocytes increase, suggesting they may play a role in the disease outcome. Human monocytes were separated into subsets and then induced to fuse using concanavalin A. The intermediate monocytes were able to fuse faster and form significantly larger giant cells than the other subsets. When antibodies targeting tetraspanins were added, the intermediate monocytes responded to anti-CD63 by forming smaller giant cells, suggesting an involvement of tetraspanins in fusion for at least this subset. However, the expression of fusion-associated tetraspanins on monocyte subsets did not correlate with the extent of fusion or with the inhibition by tetraspanin antibody. We also identified a CD9High and a CD9Low monocyte population within the classical subset. The CD9High classical monocytes expressed higher levels of tetraspanin CD151 compared to CD9Low classical monocytes but the CD9High classical subset did not exhibit greater potential to fuse and the role of these cells in immunity remains unknown. With the exception of dendrocyte-expressed seven transmembrane protein, which was expressed at higher levels on the intermediate monocyte subset, the expression of fusion-related proteins between the subsets did not clearly correlate with their ability to fuse. We also did not observe any clear correlation between giant cell formation and the expression of pro-inflammatory or fusogenic cytokines. Although tetraspanin expression appears to be important for the fusion of intermediate monocytes, the control of multinucleate giant cell formation remains obscure.
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Affiliation(s)
- Thomas C Champion
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom.,Singapore Immunology Network, Agency for Science, Technology and Research, Singapore, Singapore
| | - Lynda J Partridge
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, United Kingdom
| | - Siew-Min Ong
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore, Singapore
| | - Benoit Malleret
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore, Singapore.,Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, Singapore
| | - Siew-Cheng Wong
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore, Singapore.,Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, National University Health System, Singapore, Singapore
| | - Peter N Monk
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, United Kingdom
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245
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Impaired Secretion of TNF-α by Monocytes Stimulated With EBV Peptides Associates With Infectious Complications After Kidney Transplantation. Transplantation 2018; 102:1005-1013. [DOI: 10.1097/tp.0000000000002133] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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246
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Neutrophil extracellular traps promote macrophage pyroptosis in sepsis. Cell Death Dis 2018; 9:597. [PMID: 29789550 PMCID: PMC5964241 DOI: 10.1038/s41419-018-0538-5] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 03/14/2018] [Accepted: 03/27/2018] [Indexed: 01/09/2023]
Abstract
In response to infection, polymorphonuclear neutrophils (PMN) are recruited in the infectious sites, and employ three major strategies to fight against the microbes including phagocytosis, degranulation, and neutrophil extracellular traps (NETs). NETs are a meshwork of chromatin fibers mixed with granule-derived antimicrobial peptides and enzymes, which trap and kill the bacteria extracellularly. In this study, by using a mouse sepsis model, we identified a novel mechanism by which NETs induce macrophage (Mϕ) pyroptosis, a caspase-1-dependent regulated cell death. We show that NET-derived HMGB1, acting through RAGE and dynamin-dependent signaling, triggers an intra-Mϕ cascade of molecular events including cathepsin B (CatB) release from the ruptured lysosomes, followed by pyroptosome formation and caspase-1 activation, and subsequent Mϕ pyroptosis. The study further demonstrates that Mϕ pyroptosis augments inflammatory responses following sepsis. These findings shed light on the proinflammatory role of NETs in mediating PMN–Mϕ interaction, which therefore influences the progress of inflammation following infection.
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247
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Allo B, Lou X, Bouzekri A, Ornatsky O. Clickable and High-Sensitivity Metal-Containing Tags for Mass Cytometry. Bioconjug Chem 2018; 29:2028-2038. [PMID: 29733585 DOI: 10.1021/acs.bioconjchem.8b00239] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Mass cytometry is a highly multiplexed single-cell analysis platform that uses metal-tagged reagents to identify multiple cellular biomarkers. The current metal-tagged reagent preparation employs thiol-maleimide chemistry to covalently couple maleimide-functionalized metal-chelating polymers (MCPs) with antibodies (Abs), a process that requires partial reduction of the Ab to form reactive thiol groups. However, some classes of Abs (for example, IgM) as well as biomolecules lacking cysteine residues have been challenging to label using this method. This inherent limitation led us to develop a new conjugation strategy for labeling a wide range of biomolecules and affinity reagents. In this report, we present a metal tagging approach using a new class of azide- or transcyclooctene-terminated MCPs with copper(I)-free strain-promoted alkyne-azide cycloaddition or tetrazine-alkene click chemistry reactions, in which biomolecules with -NH2 functional groups are selectively activated with a dibenzocyclooctyne or tetrazine moiety, respectively. This approach enabled us to generate highly sensitive and specific metal-tagged IgGs, IgMs, small peptides, and lectins for applications in immunophenotyping and glycobiology. We also created dual-tagged reagents for simultaneous detection of markers by immunofluorescence, mass cytometry, and imaging mass cytometry using a two-step conjugation process. The Helios mass cytometer was used to test the functionality of reagents on suspension human leukemia cell lines and primary cells. The dual-tagged Abs, metal-tagged lectins, and phalloidin staining reagent were used to visualize target proteins and glycans on adherent cell lines and frozen/FFPE tissue sections using the Hyperion Imaging System. In some instances, reagents produced by click conjugation showed superior sensitivity and specificity compared to those of reagents produced by thiol-maleimide chemistry. In general, the click chemistry-based conjugation with new MCPs could be instrumental in developing a wide range of highly sensitive metal-containing reagents for proteomics and glycomics applications.
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Affiliation(s)
- Bedilu Allo
- Fluidigm Canada Inc. , Markham , Ontario L3R 4G5 , Canada
| | - Xudong Lou
- Fluidigm Canada Inc. , Markham , Ontario L3R 4G5 , Canada
| | | | - Olga Ornatsky
- Fluidigm Canada Inc. , Markham , Ontario L3R 4G5 , Canada
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248
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Guerriero JL. Macrophages: The Road Less Traveled, Changing Anticancer Therapy. Trends Mol Med 2018; 24:472-489. [PMID: 29655673 PMCID: PMC5927840 DOI: 10.1016/j.molmed.2018.03.006] [Citation(s) in RCA: 190] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 03/04/2018] [Accepted: 03/12/2018] [Indexed: 12/13/2022]
Abstract
Macrophages are present in all vertebrate tissues and have emerged as multifarious cells with complex roles in development, tissue homeostasis, and disease. Macrophages are a major constituent of the tumor microenvironment, where they either promote or inhibit tumorigenesis and metastasis depending on their state. Successful preclinical strategies to target macrophages for anticancer therapy are now being evaluated in the clinic and provide proof of concept that targeting macrophages may enhance current therapies; however, clinical success has been limited. This review discusses the promise of targeting macrophages for anticancer therapy, yet highlights how much is unknown regarding their ontogeny, regulation, and tissue-specific diversity. Further work might identify subsets of macrophages within different tissues, which could reveal novel therapeutic opportunities for anticancer therapy.
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Affiliation(s)
- Jennifer L Guerriero
- Department of Medical Oncology, Dana-Farber Cancer Institute, 450 Brookline Avenue, Boston, MA 02215, USA.
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Merlo JL, Cutrera AP, Kittlein MJ, Zenuto RR. Individual condition and inflammatory response to PHA in the subterranean rodent Ctenomys talarum (Talas tuco-tuco): A multivariate approach. Mamm Biol 2018. [DOI: 10.1016/j.mambio.2018.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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250
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Zhao Y, Zou W, Du J, Zhao Y. The origins and homeostasis of monocytes and tissue‐resident macrophages in physiological situation. J Cell Physiol 2018; 233:6425-6439. [PMID: 29323706 DOI: 10.1002/jcp.26461] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 01/05/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Yang Zhao
- State Key Laboratory of Membrane Biology Institute of Zoology, Chinese Academy of Sciences Beijing China
- The Comprehensive Cancer Center Affiliated Drum Tower Hospital of Nanjing University Medical School Nanjing China
| | - Weilong Zou
- Surgery of Transplant and Hepatopancrobiliary The General Hospital of Chinese People's Armed Police Forces Beijing China
| | - Junfeng Du
- Department of General Surgery PLA Army General Hospital Beijing China
| | - Yong Zhao
- State Key Laboratory of Membrane Biology Institute of Zoology, Chinese Academy of Sciences Beijing China
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