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Ferreira JR, Caldeira J, Sousa M, Barbosa MA, Lamghari M, Almeida-Porada G, Gonçalves RM. Dynamics of CD44 + bovine nucleus pulposus cells with inflammation. Sci Rep 2024; 14:9156. [PMID: 38644369 PMCID: PMC11033282 DOI: 10.1038/s41598-024-59504-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 04/11/2024] [Indexed: 04/23/2024] Open
Abstract
Intervertebral Disc (IVD) degeneration has been associated with a chronic inflammatory response, but knowledge on the contribution of distinct IVD cells, namely CD44, to the progression of IVD degeneration remains elusive. Here, bovine nucleus pulposus (NP) CD44 cells were sorted and compared by gene expression and proteomics with the negative counterpart. NP cells were then stimulated with IL-1b (10 ng/ml) and dynamics of CD44 gene and protein expression was analyzed upon pro-inflammatory treatment. The results emphasize that CD44 has a multidimensional functional role in IVD metabolism, ECM synthesis and production of neuropermissive factors. CD44 widespread expression in NP was partially associated with CD14 and CD45, resulting in the identification of distinct cell subsets. In conclusion, this study points out CD44 and CD44-based cell subsets as relevant targets in the modulation of the IVD pro-inflammatory/degenerative cascade.
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Affiliation(s)
- J R Ferreira
- I3S-Instituto de Investigação e Inovação em Saúde, Universidade Do Porto, Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade Do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade Do Porto, Porto, Portugal
- Cell & Gene Therapy Safety, Clinical Pharmacology & Safety Science, R&D, AstraZeneca, Molndal, Sweden
| | - J Caldeira
- I3S-Instituto de Investigação e Inovação em Saúde, Universidade Do Porto, Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade Do Porto, Porto, Portugal
| | - M Sousa
- I3S-Instituto de Investigação e Inovação em Saúde, Universidade Do Porto, Porto, Portugal
| | - M A Barbosa
- I3S-Instituto de Investigação e Inovação em Saúde, Universidade Do Porto, Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade Do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade Do Porto, Porto, Portugal
| | - M Lamghari
- I3S-Instituto de Investigação e Inovação em Saúde, Universidade Do Porto, Porto, Portugal
- INEB-Instituto de Engenharia Biomédica, Universidade Do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade Do Porto, Porto, Portugal
| | - G Almeida-Porada
- WFIRM-Wake Forest Institute for Regenerative Medicine, Winston-Salem, North Carolina, USA
| | - R M Gonçalves
- I3S-Instituto de Investigação e Inovação em Saúde, Universidade Do Porto, Porto, Portugal.
- INEB-Instituto de Engenharia Biomédica, Universidade Do Porto, Porto, Portugal.
- Instituto de Ciências Biomédicas Abel Salazar, Universidade Do Porto, Porto, Portugal.
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2
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Yap NY, Ong TA, Pailoor J, Gobe G, Rajandram R. The significance of CD14 in clear cell renal cell carcinoma progression and survival prognosis. Biomarkers 2023; 28:24-31. [PMID: 36315054 DOI: 10.1080/1354750x.2022.2142292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Purpose: CD14-positive tumour and immune cells have been implicated in cancer progression. This study evaluated the prognostic significance of CD14 immunostaining in clear cell renal cell carcinoma (ccRCC) compared to the adjacent non-cancer kidney, and serum soluble CD14 (sCD14) levels in patients versus controls.Methods: Immunohistochemistry was performed for CD14 on ccRCC and the corresponding adjacent non-cancer kidney tissue from 88 patients. Staining intensity was determined using Aperio ImageScope morphometry. Serum sCD14 was evaluated for 39 ccRCC patients and 38 non-cancer controls using ELISA. CD14 levels were compared with tumour characteristics and survival status.Results: CD14 overall and nuclear immunostaining was higher in ccRCC compared to the adjacent non-cancer kidney tissue. CD14 nuclear immunostaining in the adjacent non-cancer kidney was significantly associated with advanced stage and adverse RCC survival prognosis. Serum sCD14 concentration was elevated in ccRCC patients compared to non-cancer controls and was also significantly associated with tumour stage and worse survival prognosis. Higher CD14 expression, in particular CD14 positive immune cell infiltrates found in the adjacent non-RCC kidney tissue, were associated with tumour progression and poorer prognosis.Conclusion: The levels of CD14 in non-RCC adjacent kidney and serum could be potential prognostic indicators.
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Affiliation(s)
- Ning Yi Yap
- Department of Surgery, Faculty of Medicine, Universiti Malaya, Malaysia.,Laboratory, Subang Jaya Medical Centre, Malaysia
| | - Teng Aik Ong
- Department of Surgery, Faculty of Medicine, Universiti Malaya, Malaysia.,Universiti Malaya Medical Centre, Malaysia
| | - Jayalakshmi Pailoor
- Laboratory, Subang Jaya Medical Centre, Malaysia.,Department of Pathology, Faculty of Medicine, Universiti Malaya, Malaysia
| | - Glenda Gobe
- Kidney Disease Research Collaborative, School of Biomedical Sciences, Translational Research Institute, The University of Queensland, Brisbane, Australia
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3
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Meloni M, Carriero F, Ceriotti L, Barabino S. Development of a Novel In Vitro Immuno-Competent Model of Dry Eye Disease and Its Use to Evaluate the Efficacy of an Ocular Surface Modulator. Ocul Immunol Inflamm 2022; 30:1816-1824. [PMID: 34379560 DOI: 10.1080/09273948.2021.1961811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE To develop an in vitro model of severe immunocompetent-dry eye disease (ic-DED) and to investigate the mechanism of action of a T-lysial ocular surface modulator. MATERIALS AND METHODS The reconstructed human corneal epithelium (HCE) was exposed to dryness stimuli. THP-1 cell infiltration into HCE was monitored at 4 h and 24 h from T-lysial application by immunohistochemistry (CD14, CD86, AQP3) and molecular biology (AQP3, TLR4 and TNF-α). RESULTS A reduction of CD14, CD86 and AQP3 was observed after T-lysial treatment at 24 h. TLR4 was overexpressed in ic-DED model and downregulated by T-Lysial after 24 h. TNF-α expression was not modified. CONCLUSION The ic-DED model can be used to monitor the migration and differentiation of THP-1 into HCE. T-lysial was found to exert anti-inflammatory activity. This experimental model is a promising tool to study the crosstalk between epithelial and immune cells, providing new insights on the mechanisms of DED onset.
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Affiliation(s)
- Marisa Meloni
- In Vitro Innovation Center, VitroScreen, Milan, Italy
| | | | | | - Stefano Barabino
- Ocular Surface and & Dry Eye Center, ASST Fatebenefratelli-Sacco, University of Milan, Milan, Italy
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4
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Xi L, Han Y, Liu C, Liu Y, Wang Z, Wang R, Zheng Y. Sonodynamic therapy by phase-transition nanodroplets for reducing epidermal hyperplasia in psoriasis. J Control Release 2022; 350:435-447. [PMID: 36030991 DOI: 10.1016/j.jconrel.2022.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/31/2022] [Accepted: 08/21/2022] [Indexed: 11/29/2022]
Abstract
The cross-talk between hyperproliferative keratinocytes and activated immune cells is responsible for the progression of psoriasis. The strategy to alleviate psoriasis through inhibiting the abnormal proliferation of keratinocytes remains challenging due to limited therapeutic effects and low skin penetration of drugs. Herein we designed an ultrasound-triggered phase-transition nanodroplet that could produce cavitation to enhance skin penetration and effectively generate reactive oxygen species (ROS) to induce keratinocyte apoptosis for psoriasis treatment. After ultrasound stimulation, the perfluoro-n-pentane (PFP) liquid core of the nanodroplets vaporized, and the Haematoporphyrin monomethyl ether (HMME) encapsulated in the nanodroplets generated plenty of intracellular ROS which caused the apoptosis of HaCat cells through inducing mitochondrial dysfunction. In addition, the blank nanodroplets successfully inhibited the secretion of IL-6 and TNF-α from macrophages and dendritic cells in vitro due to the anti-inflammatory effect of POPG. For the skin penetration test, the phase-transition nanodroplets could effectively accumulate in the epidermis of the skin and generate intracellular ROS. The in-vivo anti-psoriasis experiment demonstrated that the phase-transition nanodroplets relieved the symptoms of psoriasis lesion and inhibited epidermal hyperplasia through induction of cell apoptosis under ultrasound irritation. Meanwhile, the inflammatory cytokines in the skin lesion almost decreased to the normal baseline level after SDT. Collectively, this study demonstrated a new strategy to inhibit keratinocyte hyperproliferation for psoriasis management based on sonodynamic responded nanodroplets.
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Affiliation(s)
- Long Xi
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Yunfeng Han
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Chang Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Yihan Liu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Zhenping Wang
- Department of Dermatology, School of Medicine, University of California, San Diego, CA 92093, USA
| | - Ruibing Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China
| | - Ying Zheng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau 999078, China.
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5
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Song S, Regan B, Ereifej ES, Chan ER, Capadona JR. Neuroinflammatory Gene Expression Analysis Reveals Pathways of Interest as Potential Targets to Improve the Recording Performance of Intracortical Microelectrodes. Cells 2022; 11:2348. [PMID: 35954192 PMCID: PMC9367362 DOI: 10.3390/cells11152348] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 02/04/2023] Open
Abstract
Intracortical microelectrodes are a critical component of brain-machine interface (BMI) systems. The recording performance of intracortical microelectrodes used for both basic neuroscience research and clinical applications of BMIs decreases over time, limiting the utility of the devices. The neuroinflammatory response to the microelectrode has been identified as a significant contributing factor to its performance. Traditionally, pathological assessment has been limited to a dozen or so known neuroinflammatory proteins, and only a few groups have begun to explore changes in gene expression following microelectrode implantation. Our initial characterization of gene expression profiles of the neuroinflammatory response to mice implanted with non-functional intracortical probes revealed many upregulated genes that could inform future therapeutic targets. Emphasis was placed on the most significant gene expression changes and genes involved in multiple innate immune sets, including Cd14, C3, Itgam, and Irak4. In previous studies, inhibition of Cluster of Differentiation 14 (Cd14) improved microelectrode performance for up to two weeks after electrode implantation, suggesting CD14 can be explored as a potential therapeutic target. However, all measures of improvements in signal quality and electrode performance lost statistical significance after two weeks. Therefore, the current study investigated the expression of genes in the neuroinflammatory pathway at the tissue-microelectrode interface in Cd14-/- mice to understand better how Cd14 inhibition was connected to temporary improvements in recording quality over the initial 2-weeks post-surgery, allowing for the identification of potential co-therapeutic targets that may work synergistically with or after CD14 inhibition to improve microelectrode performance.
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Affiliation(s)
- Sydney Song
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Jr. Drive, Cleveland, OH 44106, USA; (S.S.); (E.S.E.)
- Advanced Platform Technology Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA
| | - Brianna Regan
- Veteran Affairs Ann Arbor Healthcare System, Ann Arbor, MI 48105, USA;
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Evon S. Ereifej
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Jr. Drive, Cleveland, OH 44106, USA; (S.S.); (E.S.E.)
- Advanced Platform Technology Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA
- Veteran Affairs Ann Arbor Healthcare System, Ann Arbor, MI 48105, USA;
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109, USA
| | - E. Ricky Chan
- Institute for Computational Biology, Case Western Reserve University, Cleveland, OH 44106, USA;
| | - Jeffrey R. Capadona
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Jr. Drive, Cleveland, OH 44106, USA; (S.S.); (E.S.E.)
- Advanced Platform Technology Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Cleveland, OH 44106, USA
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6
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Reduced hydration regulates pro-inflammatory cytokines via CD14 in barrier function-impaired skin. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166482. [DOI: 10.1016/j.bbadis.2022.166482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 11/23/2022]
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7
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Mechanisms of selective monocyte targeting by liposomes functionalized with a cationic, arginine-rich lipopeptide. Acta Biomater 2022; 144:96-108. [PMID: 35314364 DOI: 10.1016/j.actbio.2022.03.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 03/08/2022] [Accepted: 03/13/2022] [Indexed: 01/01/2023]
Abstract
Stimulation of monocytes with immunomodulating agents can harness the immune system to treat a long range of diseases, including cancers, infections and autoimmune diseases. To this end we aimed to develop a monocyte-targeting delivery platform based on cationic liposomes, which can be utilized to deliver immunomodulators and thus induce monocyte-mediated immune responses while avoiding off-target side-effects. The cationic liposome design is based on functionalizing the liposomal membrane with a cholesterol-anchored tri-arginine peptide (TriArg). We demonstrate that TriArg liposomes can target monocytes with high specificity in both human and murine blood and that this targeting is dependent on the content of TriArg in the liposomal membrane. In addition, we show that the mechanism of selective monocyte targeting involves the CD14 co-receptor, and selectivity is compromised when the TriArg content is increased, resulting in complement-mediated off-target uptake in granulocytes. The presented mechanistic findings of uptake by peripheral blood leukocytes may guide the design of future drug delivery systems utilized for immunotherapy. STATEMENT OF SIGNIFICANCE: Monocytes are attractive targets for immunotherapies of cancers, infections and autoimmune diseases. Specific delivery of immunostimulatory drugs to monocytes is typically achieved using ligand-targeted drug delivery systems, but a simpler approach is to target monocytes using cationic liposomes. To achieve this, however, a deep understanding of the mechanisms governing the interactions of cationic liposomes with monocytes and other leukocytes is required. We here investigate these interactions using liposomes incorporating a cationic arginine-rich lipopeptide. We demonstrate that monocyte targeting can be achieved by fine-tuning the lipopeptide content in the liposomes. Additionally, we reveal that the CD14 receptor is involved in the targeting process, whereas the complement system is not. These mechanistic findings are critical for future design of monocyte-targeting liposomal therapies.
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8
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Besteman SB, Phung E, Raeven HHM, Amatngalim GD, Rumpret M, Crabtree J, Schepp RM, Rodenburg LW, Siemonsma SG, Verleur N, van Slooten R, Duran K, van Haaften GW, Beekman JM, Chang LA, Meyaard L, van der Bruggen T, Berbers GAM, Derksen N, Nierkens S, Morabito KM, Ruckwardt TJ, Kurt-Jones EA, Golenbock D, Graham BS, Bont LJ. Recurrent Respiratory Syncytial Virus Infection in a CD14-Deficient Patient. J Infect Dis 2022; 226:258-269. [PMID: 35429403 PMCID: PMC9400420 DOI: 10.1093/infdis/jiac114] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 04/14/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Recurrent respiratory syncytial virus (RSV) infection requiring hospitalization is rare and the underlying mechanism is unknown. We aimed to determine the role of CD14-mediated immunity in the pathogenesis of recurrent RSV infection. METHODS We performed genotyping and longitudinal immunophenotyping of the first patient with a genetic CD14 deficiency who developed recurrent RSV infection. We analyzed gene expression profiles and interleukin (IL)-6 production by patient peripheral blood mononuclear cells in response to RSV pre- and post-fusion (F) protein. We generated CD14-deficient human nasal epithelial cells cultured at air-liquid interface (HNEC-ALI) of patient-derived cells and after CRISPR-based gene editing of control cells. We analyzed viral replication upon RSV infection. RESULTS Sanger sequencing revealed a homozygous single-nucleotide deletion in CD14, resulting in absence of the CD14 protein in the index patient. In vitro, viral replication was similar in wild-type and CD14-/- HNEC-ALI. Loss of immune cell CD14 led to impaired cytokine and chemokine responses to RSV pre- and post-F protein, characterized by absence of IL-6 production. CONCLUSIONS We report an association of recurrent RSV bronchiolitis with a loss of CD14 function in immune cells. Lack of CD14 function led to defective immune responses to RSV pre- and post-F protein without a change in viral replication.
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Affiliation(s)
- Sjanna B Besteman
- Correspondence: Sjanna B. Besteman, M.D., Department of Pediatrics, Wilhelmina Children’s Hospital, University Medical Centre Utrecht, Utrecht, Lundlaan 6, 3584 EA Utrecht, the Netherlands ()
| | | | | | - Gimano D Amatngalim
- Department of Pediatric Pulmonology, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands,Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Matevž Rumpret
- Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, the Netherlands,Oncode Institute, Utrecht, the Netherlands
| | - Juliet Crabtree
- Department of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Rutger M Schepp
- National Institute of Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Lisa W Rodenburg
- Department of Pediatric Pulmonology, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands,Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Susanna G Siemonsma
- Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Nile Verleur
- Department of Pediatrics, Wilhelmina Children’s Hospital, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Rianne van Slooten
- Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Karen Duran
- Department of Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Gijs W van Haaften
- Department of Genetics, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Jeffrey M Beekman
- Department of Pediatric Pulmonology, Wilhelmina Children’s Hospital, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands,Regenerative Medicine Center Utrecht, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Lauren A Chang
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Linde Meyaard
- Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, the Netherlands,Oncode Institute, Utrecht, the Netherlands
| | - Tjomme van der Bruggen
- Department of Medical Microbiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Guy A M Berbers
- National Institute of Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | | | - Stefan Nierkens
- Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Kaitlyn M Morabito
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Tracy J Ruckwardt
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Evelyn A Kurt-Jones
- Department of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Douglas Golenbock
- Department of Infectious Diseases and Immunology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Barney S Graham
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Louis J Bont
- Center for Translational Immunology, University Medical Centre Utrecht, Utrecht, the Netherlands,Department of Pediatrics, Wilhelmina Children’s Hospital, University Medical Centre Utrecht, Utrecht, the Netherlands
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9
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Tumor-associated hematopoietic stem and progenitor cells positively linked to glioblastoma progression. Nat Commun 2021; 12:3895. [PMID: 34162860 PMCID: PMC8222381 DOI: 10.1038/s41467-021-23995-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 05/28/2021] [Indexed: 12/13/2022] Open
Abstract
Brain tumors are typically immunosuppressive and refractory to immunotherapies for reasons that remain poorly understood. The unbiased profiling of immune cell types in the tumor microenvironment may reveal immunologic networks affecting therapy and course of disease. Here we identify and validate the presence of hematopoietic stem and progenitor cells (HSPCs) within glioblastoma tissues. Furthermore, we demonstrate a positive link of tumor-associated HSPCs with malignant and immunosuppressive phenotypes. Compared to the medullary hematopoietic compartment, tumor-associated HSPCs contain a higher fraction of immunophenotypically and transcriptomically immature, CD38- cells, such as hematopoietic stem cells and multipotent progenitors, express genes related to glioblastoma progression and display signatures of active cell cycle phases. When cultured ex vivo, tumor-associated HSPCs form myeloid colonies, suggesting potential in situ myelopoiesis. In experimental models, HSPCs promote tumor cell proliferation, expression of the immune checkpoint PD-L1 and secretion of tumor promoting cytokines such as IL-6, IL-8 and CCL2, indicating concomitant support of both malignancy and immunosuppression. In patients, the amount of tumor-associated HSPCs in tumor tissues is prognostic for patient survival and correlates with immunosuppressive phenotypes. These findings identify an important element in the complex landscape of glioblastoma that may serve as a target for brain tumor immunotherapies. A deeper knowledge of the immune cell profile within the brain cancer tumor microenvironment (TM) could identify targets to improve immunotherapy efficacy. Here, in glioblastoma, the authors find haematopoietic stem and progenitor cells in the TM, which are associated with poor prognosis and increased immunosuppression.
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10
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Uddin MI, Hossain M, Islam S, Akter A, Nishat NS, Nila TA, Rafique TA, Leung DT, Calderwood SB, Ryan ET, Harris JB, LaRocque RC, Bhuiyan TR, Qadri F. An assessment of potential biomarkers of environment enteropathy and its association with age and microbial infections among children in Bangladesh. PLoS One 2021; 16:e0250446. [PMID: 33886672 PMCID: PMC8061931 DOI: 10.1371/journal.pone.0250446] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 04/06/2021] [Indexed: 01/13/2023] Open
Abstract
Interventional studies targeting environment enteropathy (EE) are impeded by the lack of appropriate, validated, non-invasive biomarkers of EE. Thus, we aimed to validate the association of potential biomarkers for EE with enteric infections and nutritional status in a longitudinal birth cohort study. We measured endotoxin core antibody (EndoCab) and soluble CD14 (sCD14) in serum, and myeloperoxidase (MPO) in feces using commercially available enzyme-linked immunosorbent assay (ELISA) kits. We found that levels of serum EndoCab and sCD14 increase with the cumulative incidence of enteric infections. We observed a significant correlation between the fecal MPO level in the children at 24 months of age with the total number of bacterial and viral infections, the total number of parasitic infections, and the total number of diarrheal episodes and diarrheal duration. We observed that the levels of serum EndoCab, sCD14, and fecal MPO at 3 months of age were significantly associated with whether children were malnourished at 18 months of age or not. Biomarkers such as fecal MPO, serum EndoCab and sCD14 in children at an early age may be useful as a measure of cumulative burden of preceding enteric infections, which are predictive of subsequent malnutrition status and may be useful non-invasive biomarkers for EE.
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Affiliation(s)
| | | | - Shahidul Islam
- Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
| | - Aklima Akter
- Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
| | | | | | | | - Daniel T. Leung
- Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
- Division of Infectious Diseases, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Stephen B. Calderwood
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Microbiology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Edward T. Ryan
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
| | - Jason B. Harris
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Regina C. LaRocque
- Division of Infectious Diseases, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | | | - Firdausi Qadri
- Infectious Diseases Division, icddr,b, Dhaka, Bangladesh
- * E-mail: (FQ); (TRB)
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11
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Alarcón-Vila C, Baroja-Mazo A, de Torre-Minguela C, Martínez CM, Martínez-García JJ, Martínez-Banaclocha H, García-Palenciano C, Pelegrin P. CD14 release induced by P2X7 receptor restricts inflammation and increases survival during sepsis. eLife 2020; 9:60849. [PMID: 33135636 PMCID: PMC7690950 DOI: 10.7554/elife.60849] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/31/2020] [Indexed: 12/12/2022] Open
Abstract
P2X7 receptor activation induces the release of different cellular proteins, such as CD14, a glycosylphosphatidylinositol (GPI)-anchored protein to the plasma membrane important for LPS signaling via TLR4. Circulating CD14 has been found at elevated levels in sepsis, but the exact mechanism of CD14 release in sepsis has not been established. Here, we show for first time that P2X7 receptor induces the release of CD14 in extracellular vesicles, resulting in a net reduction in macrophage plasma membrane CD14 that functionally affects LPS, but not monophosphoryl lipid A, pro-inflammatory cytokine production. Also, we found that during a murine model of sepsis, P2X7 receptor activity is important for maintaining elevated levels of CD14 in biological fluids and a decrease in its activity results in higher bacterial load and exacerbated organ damage, ultimately leading to premature deaths. Our data reveal that P2X7 is a key receptor for helping to clear sepsis because it maintains elevated concentrations of circulating CD14 during infection. When the immune system detects an infection, it often launches an inflammatory response to fight off the disease. This defense mechanism is activated by a cascade of signaling molecules that can aggravate inflammation, causing it to damage the body’s own tissues and organs. This life-threatening reaction is referred to as sepsis, and kills around 11 million people each year. New approaches are therefore needed to help alleviate the damage caused by this condition. The inflammatory response is often triggered by proteins called receptors, which sit on the surface of immune cells. When these receptors are activated, they induce cells to secrete proteins that travel around the body and activate immune cells that can eliminate the infection. In 2016, a group of researchers showed that a receptor called P2X7 stimulates the release of a signaling molecule called CD14. Patients with sepsis often have elevated amounts of CD14 in their bloodstream. Yet, it remained unclear what causes this rise in CD14 and what role this molecule plays in the development of sepsis. Now, Alarcón-Vila et al. – including some of the researchers involved in the 2016 study – have investigated the role of P2X7 in mice undergoing sepsis. This was done by puncturing the mice’s intestines, causing bacteria to leak out and initiate an over-active immune response. Alarcón-Vila et al. found that mice lacking the P2X7 receptor had less CD14 and struggled to eliminate the bacterial infection from their system. This increase in bacteria caused excessive damage to the mice’s organs, ultimately leading to premature death. These findings suggest that P2X7 plays an important role in preventing the onset of sepsis by helping maintain high levels of CD14 following infection. This result could help to identify new therapies that reduce the mortality rates of septic infections.
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Affiliation(s)
- Cristina Alarcón-Vila
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Alberto Baroja-Mazo
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Carlos de Torre-Minguela
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Carlos M Martínez
- Plataforma de Patología, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Murcia, Spain
| | - Juan J Martínez-García
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - Helios Martínez-Banaclocha
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | | | - Pablo Pelegrin
- Línea de Inflamación Molecular, Instituto Murciano de Investigación Biosanitaria IMIB-Arrixaca, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
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12
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Abstract
OBJECTIVE Early differential diagnosis of an infection in a trauma patient is likely to have a significant influence on the prognosis. In the present study, we evaluated the early differential value of plasma presepsin, procalcitonin (PCT), C-reactive protein (CRP), and white blood cells (WBCs) on infection in trauma patients. METHODS Trauma patients were divided into noninfected (n = 89) and infected trauma groups (n = 68); healthy adult volunteers (n = 60) and patients having sterile surgery (n = 60) were enrolled as the controls. Plasma presepsin, PCT, CRP, and WBC counts were measured and the injury severity score (ISS) was calculated. RESULTS Plasma presepsin levels within the first 3 d of admission were only significantly increased in the infected trauma group, but not in the noninfected trauma and sterile groups. This indicated that presepsin might have an ability to differentiate the infection in trauma patients; however, plasma PCT, CRP, and WBCs were significantly increased in both the infected and noninfected trauma patients. Binary logistic regression analysis showed that only increased plasma presepsin, PCT, and ISS were significantly associated with an increased likelihood of infection in trauma patients. Both presepsin and PCT were valuable for diagnosing infection; presepsin had a higher area under the curve than PCT. CONCLUSION Presepsin might be a superior biomarker for early differentiation of infection in trauma patients; however, trauma stress elevates PCT, CRP, and WBCs even in the absence of infection; therefore, caution is advised when using these indicators to diagnose infection.
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13
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Olson NC, Koh I, Reiner AP, Judd SE, Irvin MR, Howard G, Zakai NA, Cushman M. Soluble CD14, Ischemic Stroke, and Coronary Heart Disease Risk in a Prospective Study: The REGARDS Cohort. J Am Heart Assoc 2020; 9:e014241. [PMID: 32157955 PMCID: PMC7335508 DOI: 10.1161/jaha.119.014241] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background Soluble CD14 (sCD14), a circulating pattern recognition receptor, has been suggested as a cardiovascular disease risk factor. Prospective studies evaluating sCD14 with incident cardiovascular disease events are limited, particularly among racially diverse populations. Methods and Results Between 2003 and 2007, the REGARDS (Reasons for Geographic and Racial Differences in Stroke) study recruited 30 239 black and white participants across the United States. In a nested case–cohort study, sCD14 was measured in baseline serum from 548 cases of incident ischemic stroke, 612 cases of incident coronary heart disease (CHD), and a cohort random sample (n=1039). Cox models estimated hazards ratios (HR) of incident ischemic stroke or CHD per 1 SD higher sCD14, adjusting for cardiovascular disease risk factors. There was a differential association of sCD14 with ischemic stroke and CHD risk by race. Among blacks, the adjusted HR of stroke per SD increment of sCD14 was 1.42 (95% CI: 1.12, 1.80), with no association among whites (HR 1.02 [95% CI: 0.82, 1.27]). Higher sCD14 was associated with increased CHD risk in blacks but not whites, and relationships between sCD14 and CHD were stronger at younger ages. Adjusted for risk factors, the HR of CHD per SD higher sCD14 among blacks at age 45 years was 2.30 (95% CI: 1.45, 3.65) compared with 1.56 (95% CI: 0.94, 2.57) among whites. At age 65 years, the CHD HR was 1.51 (95% CI: 1.20, 1.91) among blacks and 1.02 (95% CI: 0.80, 1.31) among whites. Conclusions sCD14 may be a race‐specific stroke and CHD risk marker.
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Affiliation(s)
- Nels C Olson
- Department of Pathology and Laboratory Medicine Larner College of Medicine University of Vermont Burlington VT
| | - Insu Koh
- Department of Pathology and Laboratory Medicine Larner College of Medicine University of Vermont Burlington VT
| | - Alex P Reiner
- Department of Epidemiology University of Washington Seattle WA
| | - Suzanne E Judd
- Department of Biostatistics School of Public Health University of Alabama at Birmingham AL
| | - Marguerite R Irvin
- Department of Epidemiology School of Public Health University of Alabama at Birmingham AL
| | - George Howard
- Department of Biostatistics School of Public Health University of Alabama at Birmingham AL
| | - Neil A Zakai
- Department of Pathology and Laboratory Medicine Larner College of Medicine University of Vermont Burlington VT.,Department of Medicine Larner College of Medicine University of Vermont Burlington VT
| | - Mary Cushman
- Department of Pathology and Laboratory Medicine Larner College of Medicine University of Vermont Burlington VT.,Department of Medicine Larner College of Medicine University of Vermont Burlington VT
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14
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Oliveira BM, Pinto A, Correia A, Ferreira PG, Vilanova M, Teixeira L. Characterization of Myeloid Cellular Populations in Mesenteric and Subcutaneous Adipose Tissue of Holstein-Friesian Cows. Sci Rep 2020; 10:1771. [PMID: 32019985 PMCID: PMC7000716 DOI: 10.1038/s41598-020-58678-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/17/2020] [Indexed: 12/12/2022] Open
Abstract
Immune cells resident in adipose tissue have important functions in local and systemic metabolic homeostasis. Nevertheless, these immune cell populations remain poorly characterized in bovines. Recently, we described diverse lymphocyte subpopulations in adipose tissue of Holstein-Friesian cows. Here, we aimed at characterising myeloid cell populations present in bovine adipose tissue using multicolour flow cytometry, cell sorting and histochemistry/immunohistochemistry. Macrophages, CD14+CD11b+MHC-II+CD45+ cells, were identified in mesenteric and subcutaneous adipose tissue, though at higher proportions in the latter. Mast cells, identified as SSC-AhighCD11b−/+CD14−MHC-II−CH138A−CD45+ cells, were also observed in adipose tissue and found at higher proportions than macrophages in mesenteric adipose tissue. Neutrophils, presenting a CH138A+CD11b+ phenotype, were also detected in mesenteric and subcutaneous adipose tissue, however, at much lower frequencies than in the blood. Our gating strategy allowed identification of eosinophils in blood but not in adipose tissue although being detected by morphological analysis at low frequencies in some animals. A population not expressing CD45 and with the CH138A+ CD11b−MHC-II− phenotype, was found abundant and present at higher proportions in mesenteric than subcutaneous adipose tissue. The work reported here may be useful for further studies addressing the function of the described cells.
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Affiliation(s)
- Bárbara M Oliveira
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.,UMIB - Unidade Multidisciplinar de Investigação Biomédica, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Ana Pinto
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.,UMIB - Unidade Multidisciplinar de Investigação Biomédica, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Alexandra Correia
- I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Paula G Ferreira
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.,UMIB - Unidade Multidisciplinar de Investigação Biomédica, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Manuel Vilanova
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.,I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Luzia Teixeira
- ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal. .,UMIB - Unidade Multidisciplinar de Investigação Biomédica, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
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15
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El Yazouli L, Seghrouchni F, Hejaji H, Bouazza M, Alami AA, Dakka N, Radouani F. Cell-mediated immune response associated with Chlamydia pneumoniae infection in atherosclerotic patients. Microb Pathog 2019; 139:103860. [PMID: 31707079 DOI: 10.1016/j.micpath.2019.103860] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 11/01/2019] [Accepted: 11/06/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND Chlamydia pneumoniae is an obligate intracellular bacterium that activates cell mediated immune responses; several investigations have demonstrated its strong implication in atherosclerosis. OBJECTIVES The main objective of our study was to explore the cell-mediated immune response to C. pneumoniae infection in patients with atherosclerosis by evaluating CD14, CD8 and CD4 expression. METHODS This investigation involved a total of 27 patients with atherosclerosis and 32 controls, among patients recruited to evaluate the association of C. pneumoniae with atherosclerosis. C. pneumoniae DNA was detected in PBMCs by nested PCR as described in our previous studies. CD4, CD8 and CD14 expression was measured by flow cytometry and data analysis was performed using FlowJo software. RESULTS The results revealed an increase in MFI expression of CD4, CD8 and CD14 in Cpn DNA+ subjects among both patients and healthy subject controls (CD4 Cpn DNA+ = 829.11 vs. CD4 Cpn DNA- = 571.14; CD8 Cpn DNA+ = 1562 vs. CD8 Cpn DNA- = 699; CD14 Cpn DNA+ = 1513.83 vs. CD14 Cpn DNA- = 1170.70), with a statistically significant difference (p < 0.05). Furthermore, the comparison of CD4, CD8 and CD14 expression between Cpn DNA+ patients and Cpn DNA+ healthy subject controls showed a statistically significant increase in expression in the former group (p < 0.05). CONCLUSION These data provide incentive to further explore the role of C. pneumoniae in stimulating and changing mechanisms of the cell-mediated immune response induced by C. pneumoniae antigens. This may alter immune cell-mediated responses via increased expression of CD4, CD8 and CD14 during inflammation and the development of thrombosis, leading to fatal atherosclerosis.
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Affiliation(s)
- Loubna El Yazouli
- Institut Pasteur du Maroc, Chlamydiae and Mycoplasmas Laboratory, Casablanca, 20360, Morocco; Laboratory of Human Pathologies Biology, Genomic Center of Human Pathologies, Faculty of Sciences, Mohammed V University of Rabat, Morocco
| | - Fouad Seghrouchni
- Cellular Immunology Laboratory, Institut National d'Hygiène, Rabat, Morocco
| | - Hicham Hejaji
- Cardiovascular Surgery Department, Ibn Rochd CHU, Casablanca, Morocco
| | | | | | - Nadia Dakka
- Laboratory of Human Pathologies Biology, Genomic Center of Human Pathologies, Faculty of Sciences, Mohammed V University of Rabat, Morocco
| | - Fouzia Radouani
- Institut Pasteur du Maroc, Chlamydiae and Mycoplasmas Laboratory, Casablanca, 20360, Morocco.
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16
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Wong J, Layton D, Wheatley AK, Kent SJ. Improving immunological insights into the ferret model of human viral infectious disease. Influenza Other Respir Viruses 2019; 13:535-546. [PMID: 31583825 PMCID: PMC6800307 DOI: 10.1111/irv.12687] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/18/2019] [Accepted: 09/20/2019] [Indexed: 12/14/2022] Open
Abstract
Ferrets are a well-established model for studying both the pathogenesis and transmission of human respiratory viruses and evaluation of antiviral vaccines. Advanced immunological studies would add substantial value to the ferret models of disease but are hindered by the low number of ferret-reactive reagents available for flow cytometry and immunohistochemistry. Nevertheless, progress has been made to understand immune responses in the ferret model with a limited set of ferret-specific reagents and assays. This review examines current immunological insights gained from the ferret model across relevant human respiratory diseases, with a focus on influenza viruses. We highlight key knowledge gaps that need to be bridged to advance the utility of ferrets for immunological studies.
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Affiliation(s)
- Julius Wong
- Department of Microbiology and ImmunologyPeter Doherty Institute for Infection and ImmunityUniversity of MelbourneMelbourneVic.Australia
| | - Daniel Layton
- CSIRO Health and BiosecurityAustralian Animal Health LaboratoriesGeelongVic.Australia
| | - Adam K. Wheatley
- Department of Microbiology and ImmunologyPeter Doherty Institute for Infection and ImmunityUniversity of MelbourneMelbourneVic.Australia
| | - Stephen J. Kent
- Department of Microbiology and ImmunologyPeter Doherty Institute for Infection and ImmunityUniversity of MelbourneMelbourneVic.Australia
- Melbourne Sexual Health Centre and Department of Infectious DiseasesAlfred Hospital and Central Clinical SchoolMonash UniversityMelbourneVic.Australia
- ARC Centre for Excellence in Convergent Bio‐Nano Science and TechnologyUniversity of MelbourneParkvilleVic.Australia
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17
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Goulart MR, Hlavaty SI, Chang YM, Polton G, Stell A, Perry J, Wu Y, Sharma E, Broxholme J, Lee AC, Szladovits B, Turmaine M, Gribben J, Xia D, Garden OA. Phenotypic and transcriptomic characterization of canine myeloid-derived suppressor cells. Sci Rep 2019; 9:3574. [PMID: 30837603 PMCID: PMC6400936 DOI: 10.1038/s41598-019-40285-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 02/13/2019] [Indexed: 01/19/2023] Open
Abstract
Myeloid-derived suppressor cells (MDSCs) are key players in immune evasion, tumor progression and metastasis. MDSCs accumulate under various pathological states and fall into two functionally and phenotypically distinct subsets that have been identified in humans and mice: polymorphonuclear (PMN)-MDSCs and monocytic (M)-MDSCs. As dogs are an excellent model for human tumor development and progression, we set out to identify PMN-MDSCs and M-MDSCs in clinical canine oncology patients. Canine hypodense MHC class II-CD5-CD21-CD11b+ cells can be subdivided into polymorphonuclear (CADO48A+CD14-) and monocytic (CADO48A-CD14+) MDSC subsets. The transcriptomic signatures of PMN-MDSCs and M-MDSCs are distinct, and moreover reveal a statistically significant similarity between canine and previously published human PMN-MDSC gene expression patterns. As in humans, peripheral blood frequencies of canine PMN-MDSCs and M-MDSCs are significantly higher in dogs with cancer compared to healthy control dogs (PMN-MDSCs: p < 0.001; M-MDSCs: p < 0.01). By leveraging the power of evolution, we also identified additional conserved genes in PMN-MDSCs of multiple species that may play a role in MDSC function. Our findings therefore validate the dog as a model for studying MDSCs in the context of cancer.
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Affiliation(s)
- Michelle R Goulart
- Royal Veterinary College, London, UK
- Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Sabina I Hlavaty
- School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | | | | | | | - James Perry
- School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Ying Wu
- Royal Veterinary College, London, UK
| | - Eshita Sharma
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - John Broxholme
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Avery C Lee
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | | | - Mark Turmaine
- Division of Bioscience, University College London, London, UK
| | - John Gribben
- Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Dong Xia
- Royal Veterinary College, London, UK
| | - Oliver A Garden
- School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA.
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18
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García-Solano J, Turpin MC, Torres-Moreno D, Huertas-López F, Tuomisto A, Mäkinen MJ, Conesa A, Conesa-Zamora P. Two histologically colorectal carcinomas subsets from the serrated pathway show different methylome signatures and diagnostic biomarkers. Clin Epigenetics 2018; 10:141. [PMID: 30413173 PMCID: PMC6230233 DOI: 10.1186/s13148-018-0571-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 10/21/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Altered methylation patterns are driving forces in colorectal carcinogenesis. The serrated adenocarcinoma (SAC) and sporadic colorectal carcinoma showing histological and molecular features of microsatellite instability (hmMSI-H) are two endpoints of the so-called serrated pathological route sharing some characteristics but displaying a totally different immune response and clinical outcome. However, there are no studies comparing the methylome of these two subtypes of colorectal carcinomas. The methylation status of 450,000 CpG sites using the Infinium Human Methylation 450 BeadChip array was investigated in 48 colorectal specimens, including 39 SACs and 9 matched hmMSI-H. RESULTS Microarray data comparing SAC and hmMSI-H showed an enrichment in functions related to morphogenesis, neurogenesis, cytoskeleton, metabolism, vesicle transport and immune response and also significant differential methylation of 1540 genes, including CD14 and HLA-DOA which were more methylated in hmMSI-H than in SAC and subsequently validated at the CpG, mRNA and protein level using pyrosequencing, quantitative polymerase chain reaction (qPCR) and immunohistochemistry. CONCLUSIONS These results demonstrate particular epigenetic regulation patterns in SAC which may help to define key molecules responsible for the characteristic weak immune response of SAC and identify potential targets for treating SAC, which lacks molecular targeted therapy.
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Affiliation(s)
- José García-Solano
- Department of Pathology, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202, Cartagena, Spain.,Facultad de Ciencias de la Salud, Catholic University of Murcia (UCAM), Murcia, Spain.,Instituto Murciano de Investigaciones Biosanitarias (IMIB), Murcia, Spain
| | - María C Turpin
- Faculty of Experimental Sciences, Universidad Francisco de Vitoria, Carretera Pozuelo-Majadahonda km. 1.800 28223 Pozuelo de Alarcón, Madrid, Spain
| | - Daniel Torres-Moreno
- Department of Pathology, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202, Cartagena, Spain
| | - Francisco Huertas-López
- Microbiology and Cell Sciences Department, Institute for Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA
| | - Anne Tuomisto
- Cancer and Translational Medicine Research Institute, Department of Pathology, and Medical Research Center, University of Oulu and Oulu University Hospital, Oulu, Finland
| | - Markus J Mäkinen
- Cancer and Translational Medicine Research Institute, Department of Pathology, and Medical Research Center, University of Oulu and Oulu University Hospital, Oulu, Finland
| | - Ana Conesa
- Microbiology and Cell Sciences Department, Institute for Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA.,Genomics of Gene Expression Laboratory, Centro de Investigación Príncipe Felipe (CIPF), Valencia, Spain.,Genetics Institute, Institute for Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA
| | - Pablo Conesa-Zamora
- Facultad de Ciencias de la Salud, Catholic University of Murcia (UCAM), Murcia, Spain. .,Instituto Murciano de Investigaciones Biosanitarias (IMIB), Murcia, Spain. .,Department of Clinical Chemistry, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202, Cartagena, Spain.
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19
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Choudhary V, Uaratanawong R, Patel RR, Patel H, Bao W, Hartney B, Cohen E, Chen X, Zhong Q, Isales CM, Bollag WB. Phosphatidylglycerol Inhibits Toll-Like Receptor-Mediated Inflammation by Danger-Associated Molecular Patterns. J Invest Dermatol 2018; 139:868-877. [PMID: 30391260 DOI: 10.1016/j.jid.2018.10.021] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 09/30/2018] [Accepted: 10/01/2018] [Indexed: 02/08/2023]
Abstract
Psoriasis is a common skin disorder characterized by hyperproliferation and aberrant differentiation of epidermal keratinocytes and inflammation. We previously showed that phosphatidylglycerol (PG) can regulate keratinocyte function and suppress skin inflammation. Based on data suggesting that PG can inhibit toll-like receptor (TLR) activation induced by microorganisms and their components, we determined whether PG can inhibit TLR activation in response to antimicrobial peptides. These peptides, which are up-regulated in psoriasis, are known to function as danger-associated molecular patterns (i.e., DAMPs) to activate TLRs and the innate immune system. Because S100A9 is elevated in psoriatic skin and in animal models of psoriasis, we selected S100A9 as a representative antimicrobial peptide DAMP. We showed that in primary keratinocytes and a macrophage cell line, PG suppressed inflammatory mediator production induced by recombinant S100A9 functioning through both TLR2 and TLR4. In addition, PG, but not phosphatidylcholine, inhibited downstream S100A9-elicited TLR2 and NF-κB activation. These results, to our knowledge previously unreported, show PG's ability to inhibit DAMP-induced TLR activation, thereby reducing inflammatory signals. In addition, topical PG ameliorated skin lesions and inflammation in a mouse model of psoriasis. Together, these results suggest the possibility of developing PG as a therapy for psoriasis.
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Affiliation(s)
- Vivek Choudhary
- Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia, USA; Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Rawipan Uaratanawong
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA; Department of Medicine (Dermatology), Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand
| | - Ravi R Patel
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Hirel Patel
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Wendi Bao
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Bernadette Hartney
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Elyssa Cohen
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Xunsheng Chen
- Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia, USA; Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Qing Zhong
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Carlos M Isales
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Wendy B Bollag
- Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia, USA; Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA.
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20
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Singh HB, Borbora D. In silico assessment of human CD14 gene revealed high-risk single nucleotide polymorphisms and their impact on innate immune response against microbial pathogens. Meta Gene 2018. [DOI: 10.1016/j.mgene.2018.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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21
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Porrello A, Leslie PL, Harrison EB, Gorentla BK, Kattula S, Ghosh SK, Azam SH, Holtzhausen A, Chao YL, Hayward MC, Waugh TA, Bae S, Godfrey V, Randell SH, Oderup C, Makowski L, Weiss J, Wilkerson MD, Hayes DN, Earp HS, Baldwin AS, Wolberg AS, Pecot CV. Factor XIIIA-expressing inflammatory monocytes promote lung squamous cancer through fibrin cross-linking. Nat Commun 2018; 9:1988. [PMID: 29777108 PMCID: PMC5959879 DOI: 10.1038/s41467-018-04355-w] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 04/25/2018] [Indexed: 12/26/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related deaths worldwide, and lung squamous carcinomas (LUSC) represent about 30% of cases. Molecular aberrations in lung adenocarcinomas have allowed for effective targeted treatments, but corresponding therapeutic advances in LUSC have not materialized. However, immune checkpoint inhibitors in sub-populations of LUSC patients have led to exciting responses. Using computational analyses of The Cancer Genome Atlas, we identified a subset of LUSC tumors characterized by dense infiltration of inflammatory monocytes (IMs) and poor survival. With novel, immunocompetent metastasis models, we demonstrated that tumor cell derived CCL2-mediated recruitment of IMs is necessary and sufficient for LUSC metastasis. Pharmacologic inhibition of IM recruitment had substantial anti-metastatic effects. Notably, we show that IMs highly express Factor XIIIA, which promotes fibrin cross-linking to create a scaffold for LUSC cell invasion and metastases. Consistently, human LUSC samples containing extensive cross-linked fibrin in the microenvironment correlated with poor survival. Lung squamous carcinomas (LUSC) are poorly molecularly characterized, but sub-populations show promising response to immune checkpoint inhibitors. Here, the authors identify a subset of LUSC characterized by infiltration of inflammatory monocytes, where metastasis is linked to Factor XIIIA promoting fibrin cross-linking.
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Affiliation(s)
- Alessandro Porrello
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Patrick L Leslie
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Emily B Harrison
- Center for Nanotechnology in Drug Delivery, Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Balachandra K Gorentla
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Sravya Kattula
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Subrata K Ghosh
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Salma H Azam
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Alisha Holtzhausen
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Yvonne L Chao
- Division of Hematology & Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Michele C Hayward
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Trent A Waugh
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Sanggyu Bae
- Division of Hematology & Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Virginia Godfrey
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Scott H Randell
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Marsico Lung Institute/Cystic Fibrosis Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Cecilia Oderup
- Cancer Immunology, Pfizer, Inc, San Francisco, CA, 94080, USA
| | - Liza Makowski
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Nutrition Obesity Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Jared Weiss
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Division of Hematology & Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Matthew D Wilkerson
- Department of Anatomy, Physiology and Genetics, The American Genome Center, Collaborative Health Initiative Research Program, Uniformed Services University, Bethesda, MD, 20814, USA
| | - D Neil Hayes
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Division of Hematology & Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - H Shelton Earp
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Albert S Baldwin
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.,Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Alisa S Wolberg
- Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Chad V Pecot
- UNC Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA. .,Division of Hematology & Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA. .,Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
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Toll-like receptors in immunity and inflammatory diseases: Past, present, and future. Int Immunopharmacol 2018; 59:391-412. [PMID: 29730580 PMCID: PMC7106078 DOI: 10.1016/j.intimp.2018.03.002] [Citation(s) in RCA: 402] [Impact Index Per Article: 67.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 02/28/2018] [Accepted: 03/01/2018] [Indexed: 02/07/2023]
Abstract
The immune system is a very diverse system of the host that evolved during evolution to cope with various pathogens present in the vicinity of environmental surroundings inhabited by multicellular organisms ranging from achordates to chordates (including humans). For example, cells of immune system express various pattern recognition receptors (PRRs) that detect danger via recognizing specific pathogen-associated molecular patterns (PAMPs) and mount a specific immune response. Toll-like receptors (TLRs) are one of these PRRs expressed by various immune cells. However, they were first discovered in the Drosophila melanogaster (common fruit fly) as genes/proteins important in embryonic development and dorso-ventral body patterning/polarity. Till date, 13 different types of TLRs (TLR1-TLR13) have been discovered and described in mammals since the first discovery of TLR4 in humans in late 1997. This discovery of TLR4 in humans revolutionized the field of innate immunity and thus the immunology and host-pathogen interaction. Since then TLRs are found to be expressed on various immune cells and have been targeted for therapeutic drug development for various infectious and inflammatory diseases including cancer. Even, Single nucleotide polymorphisms (SNPs) among various TLR genes have been identified among the different human population and their association with susceptibility/resistance to certain infections and other inflammatory diseases. Thus, in the present review the current and future importance of TLRs in immunity, their pattern of expression among various immune cells along with TLR based therapeutic approach is reviewed. TLRs are first described PRRs that revolutionized the biology of host-pathogen interaction and immune response The discovery of different TLRs in humans proved milestone in the field of innate immunity and inflammation The pattern of expression of all the TLRs expressed by human immune cells An association of various TLR SNPs with different inflammatory diseases Currently available drugs or vaccines based on TLRs and their future in drug targeting along with the role in reproduction, and regeneration
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23
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Chen KW, Lawlor KE, von Pein JB, Boucher D, Gerlic M, Croker BA, Bezbradica JS, Vince JE, Schroder K. Cutting Edge: Blockade of Inhibitor of Apoptosis Proteins Sensitizes Neutrophils to TNF- but Not Lipopolysaccharide-Mediated Cell Death and IL-1β Secretion. THE JOURNAL OF IMMUNOLOGY 2018; 200:3341-3346. [PMID: 29661823 DOI: 10.4049/jimmunol.1701620] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 03/19/2018] [Indexed: 12/12/2022]
Abstract
The mammalian inhibitor of apoptosis proteins (IAPs) are key regulators of cell death and inflammation. A major function of IAPs is to block the formation of a cell death-inducing complex, termed the ripoptosome, which can trigger caspase-8-dependent apoptosis or caspase-independent necroptosis. Recent studies report that upon TLR4 or TNF receptor 1 (TNFR1) signaling in macrophages, the ripoptosome can also induce NLRP3 inflammasome formation and IL-1β maturation. Whether neutrophils have the capacity to assemble a ripoptosome to induce cell death and inflammasome activation during TLR4 and TNFR1 signaling is unclear. In this study, we demonstrate that murine neutrophils can signal via TNFR1-driven ripoptosome assembly to induce both cell death and IL-1β maturation. However, unlike macrophages, neutrophils suppress TLR4-dependent cell death and NLRP3 inflammasome activation during IAP inhibition via deficiencies in the CD14/TRIF arm of TLR4 signaling.
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Affiliation(s)
- Kaiwen W Chen
- Centre for Inflammation and Disease Research, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Kate E Lawlor
- Division of Inflammation, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3050, Australia
| | - Jessica B von Pein
- Centre for Inflammation and Disease Research, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Dave Boucher
- Centre for Inflammation and Disease Research, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Motti Gerlic
- Department of Clinical Microbiology and Immunology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel; and
| | - Ben A Croker
- Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA 02115
| | - Jelena S Bezbradica
- Centre for Inflammation and Disease Research, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - James E Vince
- Division of Inflammation, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3050, Australia
| | - Kate Schroder
- Centre for Inflammation and Disease Research, Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Queensland 4072, Australia;
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24
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Pieper IL, Radley G, Christen A, Ali S, Bodger O, Thornton CA. Ovine Leukocyte Microparticles Generated by the CentriMag Ventricular Assist Device In Vitro. Artif Organs 2018; 42:E78-E89. [PMID: 29512167 DOI: 10.1111/aor.13068] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 10/06/2017] [Accepted: 10/12/2017] [Indexed: 12/13/2022]
Abstract
Ventricular assist devices (VADs) are a life-saving form of mechanical circulatory support in heart failure patients. However, VADs have not yet reached their full potential due to the associated side effects (thrombosis, bleeding, infection) related to the activation and damage of blood cells and proteins caused by mechanical stress and foreign materials. Studies of the effects of VADs on leukocytes are limited, yet leukocyte activation and damage including microparticle generation can influence both thrombosis and infection rates. Therefore, the aim was to develop a multicolor flow cytometry assessment of leukocyte microparticles (LMPs) using ovine blood and the CentriMag VAD as a model for shear stress. Ovine blood was pumped for 6 h in the CentriMag and regular samples analyzed for hemolysis, complete blood counts and LMP by flow cytometry during three different pump operating conditions (low flow, standard, high speed). The high speed condition caused significant increases in plasma-free hemoglobin; decreases in total leukocytes, granulocytes, monocytes, and platelets; increases in CD45+ LMPs as well as two novel LMP populations: CD11bbright /HLA-DR- and CD11bdull /HLA-DR+ , both of which were CD14- /CD21- . CD11bbright /HLA-DR- LMPs appeared to respond to an increase in shear magnitude whereas the CD11bdull /HLA-DR+ LMPs significantly increased in all pumping conditions. We propose that these two populations are released from granulocytes and T cells, respectively, but further research is needed to better characterize these two populations.
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Affiliation(s)
- Ina Laura Pieper
- Institute of Life Science, Swansea University Medical School, Swansea, UK.,Calon Cardio-Technology Ltd, Institute of Life Science, Swansea, UK
| | - Gemma Radley
- Institute of Life Science, Swansea University Medical School, Swansea, UK.,Calon Cardio-Technology Ltd, Institute of Life Science, Swansea, UK
| | - Abigail Christen
- Calon Cardio-Technology Ltd, Institute of Life Science, Swansea, UK
| | - Sabrina Ali
- Calon Cardio-Technology Ltd, Institute of Life Science, Swansea, UK
| | - Owen Bodger
- Institute of Life Science, Swansea University Medical School, Swansea, UK
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25
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Singhania A, Wallington JC, Smith CG, Horowitz D, Staples KJ, Howarth PH, Gadola SD, Djukanović R, Woelk CH, Hinks TSC. Multitissue Transcriptomics Delineates the Diversity of Airway T Cell Functions in Asthma. Am J Respir Cell Mol Biol 2018; 58:261-270. [PMID: 28933920 DOI: 10.1165/rcmb.2017-0162oc] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Asthma arises from the complex interplay of inflammatory pathways in diverse cell types and tissues. We sought to undertake a comprehensive transcriptomic assessment of the epithelium and airway T cells that remain understudied in asthma and investigate interactions between multiple cells and tissues. Epithelial brushings and flow-sorted CD3+ T cells from sputum and BAL were obtained from healthy subjects (n = 19) and patients with asthma (mild, moderate, and severe asthma; n = 46). Gene expression was assessed using Affymetrix HT HG-U133+ PM GeneChips, and results were validated by real-time quantitative PCR. In the epithelium, IL-13 response genes (POSTN, SERPINB2, and CLCA1), mast cell mediators (CPA3 and TPSAB1), inducible nitric oxide synthase, and cystatins (CST1, CST2, and CST4) were upregulated in mild asthma, but, except for cystatins, were suppressed by corticosteroids in moderate asthma. In severe asthma-with predominantly neutrophilic phenotype-several distinct processes were upregulated, including neutrophilia (TCN1 and MMP9), mucins, and oxidative stress responses. The majority of the disease signature was evident in sputum T cells in severe asthma, where 267 genes were differentially regulated compared with health, highlighting compartmentalization of inflammation. This signature included IL-17-inducible chemokines (CXCL1, CXCL2, CXCL3, IL8, and CSF3) and chemoattractants for neutrophils (IL8, CCL3, and LGALS3), T cells, and monocytes. A protein interaction network in severe asthma highlighted signatures of responses to bacterial infections across tissues (CEACAM5, CD14, and TLR2), including Toll-like receptor signaling. In conclusion, the activation of innate immune pathways in the airways suggests that activated T cells may be driving neutrophilic inflammation and steroid-insensitive IL-17 response in severe asthma.
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Affiliation(s)
- Akul Singhania
- 1 Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, and
| | - Joshua C Wallington
- 1 Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, and
| | - Caroline G Smith
- 1 Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, and.,2 National Institute for Health Research Southampton Respiratory Biomedical Research Unit, Southampton University Hospital, Southampton, United Kingdom
| | - Daniel Horowitz
- 3 Janssen Research and Development, High Wycombe, Buckinghamshire, United Kingdom
| | - Karl J Staples
- 1 Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, and
| | - Peter H Howarth
- 1 Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, and.,2 National Institute for Health Research Southampton Respiratory Biomedical Research Unit, Southampton University Hospital, Southampton, United Kingdom
| | - Stephan D Gadola
- 1 Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, and.,4 Roche, F. Hoffman-La Roche AG, Konzern-Hauptsitz, Basel, Switzerland; and
| | - Ratko Djukanović
- 1 Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, and.,2 National Institute for Health Research Southampton Respiratory Biomedical Research Unit, Southampton University Hospital, Southampton, United Kingdom
| | - Christopher H Woelk
- 1 Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, and
| | - Timothy S C Hinks
- 1 Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, and.,2 National Institute for Health Research Southampton Respiratory Biomedical Research Unit, Southampton University Hospital, Southampton, United Kingdom.,5 Nuffield Department of Medicine and National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, United Kingdom
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26
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Sabbione AC, Luna-Vital D, Scilingo A, Añón MC, González de Mejía E. Amaranth peptides decreased the activity and expression of cellular tissue factor on LPS activated THP-1 human monocytes. Food Funct 2018; 9:3823-3834. [DOI: 10.1039/c8fo00323h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The immunomodulatory activity of amaranth peptides is linked for the first time with their antithrombotic activity. Inhibition of tissue factor expression and the NF-κB pathway was observed after treatment with the peptides.
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Affiliation(s)
- Ana Clara Sabbione
- Food Science and Human Nutrition
- University of Illinois at Urbana-Champaign
- Urbana
- USA
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA)
| | - Diego Luna-Vital
- Food Science and Human Nutrition
- University of Illinois at Urbana-Champaign
- Urbana
- USA
| | - Adriana Scilingo
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA)
- La Plata
- Argentina
| | - María Cristina Añón
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA)
- La Plata
- Argentina
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Al Dubayee MS, Alayed H, Almansour R, Alqaoud N, Alnamlah R, Obeid D, Alshahrani A, Zahra MM, Nasr A, Al-Bawab A, Aljada A. Differential Expression of Human Peripheral Mononuclear Cells Phenotype Markers in Type 2 Diabetic Patients and Type 2 Diabetic Patients on Metformin. Front Endocrinol (Lausanne) 2018; 9:537. [PMID: 30356719 PMCID: PMC6189318 DOI: 10.3389/fendo.2018.00537] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Accepted: 08/23/2018] [Indexed: 01/22/2023] Open
Abstract
Background: Although peripheral blood mononuclear cells (PBMC) have been demonstrated to be in a pro-inflammatory state in obesity and type 2 Diabetes Mellitus (T2DM), characterization of circulating PBMC phenotypes in the obese and T2DM and the effect of Metformin on these phenotypes in humans is still ill-defined and remains to be determined. Methods: Thirty normal healthy adult volunteers of normal weight, 30 obese subjects, 20 obese newly diagnosed diabetics and 30 obese diabetics on Metformin were recruited for the study. Fasting blood samples were collected and PBMC were isolated from whole blood. Polarization markers (CD86, IL-6, TNFα, iNOS, CD36, CD11c, CD169, CD206, CD163, CD68, CD11b, CD16, and CD14) were measured by RT-qPCR. Gene expression fold changes were calculated using the 2-ΔΔCT method for RT-qPCR. Results: Obesity and T2DM are associated an increased CD68 marker in PBMC. mRNA expression of CD11b, CD11c, CD169, and CD163 were significantly reduced in PBMC from T2DM subjects whereas CD11c was significantly inhibited in PBMC from obese subjects. On the other hand, macrophage M1-like phenotype was observed in T2DM circulation as demonstrated by increased mRNA expression of CD16, IL-6, iNOS, TNFα, and CD36. There were no significant changes in CD14 and CD86 in the obese and T2DM when compared to the lean subjects. Metformin treatment in T2DM reverted CD11c, CD169, IL-6, iNOS, TNFα, and CD36 to levels comparable to lean subjects. CD206 mRNA expression was significantly upregulated in PBMC of T2DM while Metformin treatment inhibited CD206 expression levels. Conclusions: These data support the notion that PBMC in circulation in T2DM express different pattern of phenotypic markers than the patterns typically present in M1 and M2 like cells. These phenotypic markers could be representative of metabolically activated macrophages (MMe)-like cells. Metformin, on the other hand, reduces MMe-like cells in circulation.
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Affiliation(s)
- Mohammed S. Al Dubayee
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- King Abdullah Specialized Children Hospital, Ministry of National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Hind Alayed
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Rana Almansour
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Nora Alqaoud
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Rahaf Alnamlah
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Dana Obeid
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Awad Alshahrani
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Mahmoud M. Zahra
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Amre Nasr
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Ahmad Al-Bawab
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
| | - Ahmad Aljada
- College of Medicine, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
- *Correspondence: Ahmad Aljada
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28
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Comparative Proteomics Analysis of Urine Reveals Down-Regulation of Acute Phase Response Signaling and LXR/RXR Activation Pathways in Prostate Cancer. Proteomes 2017; 6:proteomes6010001. [PMID: 29286311 PMCID: PMC5874760 DOI: 10.3390/proteomes6010001] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 12/22/2017] [Accepted: 12/25/2017] [Indexed: 01/03/2023] Open
Abstract
Detecting prostate cancer (PCa) using non-invasive diagnostic markers still remains a challenge. The aim of this study was the identification of urine proteins that are sufficiently sensitive and specific to detect PCa in the early stages. Comparative proteomics profiling of urine from patients with PCa, benign prostate hyperplasia, bladder cancer, and renal cancer, coupled with bioinformatics analysis, were performed. Statistically significant difference in abundance showed 20 and 85 proteins in the 2-D DIGE/MS and label-free LC-MS/MS experiments, respectively. In silico analysis indicated activation, binding, and cell movement of subset of immune cells as the top affected cellular functions in PCa, together with the down-regulation of Acute Phase Response Signaling and Liver X Receptor/ Retinoid X Receptor (LXR/RXR) activation pathways. The most promising biomarkers were 35, altered in PCa when compared to more than one group. Half of these have confirmed localization in normal or PCa tissues. Twenty proteins (CD14, AHSG, ENO1, ANXA1, CLU, COL6A1, C3, FGA, FGG, HPX, PTGDS, S100A9, LMAN2, ITIH4, ACTA2, GRN, HBB, PEBP1, CTSB, SPP1) are oncogenes, tumor suppressors, and multifunctional proteins with highly confirmed involvement in PCa, while 9 (AZU1, IGHG1, RNASE2, PZP, REG1A, AMY1A, AMY2A, ACTG2, COL18A1) have been associated with different cancers, but not with PCa so far, and may represent novel findings. LC-MS/MS data are available via ProteomeXchange with identifier PXD008407.
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McKeithen DN, Omosun YO, Ryans K, Mu J, Xie Z, Simoneaux T, Blas-machado U, Eko FO, Black CM, Igietseme JU, He Q. The emerging role of ASC in dendritic cell metabolism during Chlamydia infection. PLoS One 2017; 12:e0188643. [PMID: 29216217 PMCID: PMC5720709 DOI: 10.1371/journal.pone.0188643] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 11/10/2017] [Indexed: 11/18/2022] Open
Abstract
Chlamydia trachomatis is a bacterial agent that causes sexually transmitted infections worldwide. The regulatory functions of dendritic cells (DCs) play a major role in protective immunity against Chlamydia infections. Here, we investigated the role of ASC in DCs metabolism and the regulation of DCs activation and function during Chlamydia infection. Following Chlamydia stimulation, maturation and antigen presenting functions were impaired in ASC-/- DCs compared to wild type (WT) DCs, in addition, ASC deficiency induced a tolerant phenotype in Chlamydia stimulated DCs. Using real-time extracellular flux analysis, we showed that activation in Chlamydia stimulated WT DCs is associated with a metabolic change in which mitochondrial oxidative phosphorylation (OXPHOS) is inhibited and the cells become committed to utilizing glucose through aerobic glycolysis for differentiation and antigen presenting functions. However, in ASC-/- DCs Chlamydia-induced metabolic change was prevented and there was a significant effect on mitochondrial morphology. The mitochondria of Chlamydia stimulated ASC-/- DCs had disrupted cristae compared to the normal narrow pleomorphic cristae found in stimulated WT DCs. In conclusion, our results suggest that Chlamydia-mediated activation of DCs is associated with a metabolic transition in which OXPHOS is inhibited, thereby dedicating the DCs to aerobic glycolysis, while ASC deficiency disrupts DCs function by inhibiting the reprogramming of DCs metabolism within the mitochondria, from glycolysis to electron transport chain.
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Affiliation(s)
- Danielle N. McKeithen
- Department Microbiology, Biochemistry, and, Immunology, Morehouse School of Medicine, Atlanta, GA, United States of America
- Department of Biology, Clark Atlanta University, Atlanta, GA, United States of America
| | - Yusuf O. Omosun
- Department Microbiology, Biochemistry, and, Immunology, Morehouse School of Medicine, Atlanta, GA, United States of America
| | - Khamia Ryans
- Department Microbiology, Biochemistry, and, Immunology, Morehouse School of Medicine, Atlanta, GA, United States of America
- Department of Biology, Clark Atlanta University, Atlanta, GA, United States of America
| | - Jing Mu
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, United States of America
| | - Zhonglin Xie
- Center for Molecular and Translational Medicine, Georgia State University, Atlanta, GA, United States of America
| | - Tankya Simoneaux
- Department Microbiology, Biochemistry, and, Immunology, Morehouse School of Medicine, Atlanta, GA, United States of America
| | - Uriel Blas-machado
- College of Veterinary Medicine, University of Georgia, Georgia, Atlanta, United States of America
| | - Francis O. Eko
- Department Microbiology, Biochemistry, and, Immunology, Morehouse School of Medicine, Atlanta, GA, United States of America
| | - Carolyn M. Black
- National Center for Emerging Zoonotic and Infectious Diseases, Centers for Disease Control & Prevention (CDC), Atlanta, GA, United States of America
| | - Joseph U. Igietseme
- Department Microbiology, Biochemistry, and, Immunology, Morehouse School of Medicine, Atlanta, GA, United States of America
- National Center for Emerging Zoonotic and Infectious Diseases, Centers for Disease Control & Prevention (CDC), Atlanta, GA, United States of America
| | - Qing He
- Department Microbiology, Biochemistry, and, Immunology, Morehouse School of Medicine, Atlanta, GA, United States of America
- * E-mail:
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Longtine MS, Cvitic S, Colvin BN, Chen B, Desoye G, Nelson DM. Calcitriol regulates immune genes CD14 and CD180 to modulate LPS responses in human trophoblasts. Reproduction 2017; 154:735-744. [DOI: 10.1530/rep-17-0183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 08/17/2017] [Accepted: 09/04/2017] [Indexed: 11/08/2022]
Abstract
We assessed the response of primary cultures of placental villous mononucleated trophoblasts and multinucleated syncytiotrophoblast to calcitriol, the most biologically active form of vitamin D. Whole-genome microarray data showed that calcitriol modulates the expression of many genes in trophoblasts within 6 hours of exposure and RT-qPCR revealed similar responses in cytotrophoblasts, syncytiotrophoblasts and villous explants. Both cytotrophoblasts and syncytiotrophoblasts expressed genes for the vitamin D receptor, for LRP2 and CUBN that mediate internalization of calcidiol, forCYP27B1that encodes the enzyme that converts calcidiol into active calcitriol, and forCYP24A1that encodes the enzyme that modifies calcitriol and calcidiol to inactive calcitetrol. Notably, we found an inverse effect of calcitriol on expression of CD14 and CD180/RP105, proteins that differentially regulate toll-like receptor 4-mediated immune responses. Supported by gene ontology analysis, we tested the hypothesis that CD14 and CD180 modulate the inflammatory response of syncytiotrophoblast to bacterial lipopolysaccharide (LPS). These cells showed a robust response to a wide range of LPS concentrations, with induction of active NF-κB and increased secretion of IL-6 and IL-8. SiRNA-mediated knockdown ofCD14reduced the secretion of IL-6 and IL-8 in response to LPS. Collectively, our data showed that calcitriol has a rapid and widespread effect on villous trophoblast gene expression in general, and a specific effect on the innate immune response by syncytiotrophoblast.
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Antiochos P, Marques-Vidal P, Virzi J, Pagano S, Satta N, Hartley O, Montecucco F, Mach F, Kutalik Z, Waeber G, Vollenweider P, Vuilleumier N. Impact of CD14 Polymorphisms on Anti-Apolipoprotein A-1 IgG-Related Coronary Artery Disease Prediction in the General Population. Arterioscler Thromb Vasc Biol 2017; 37:2342-2349. [DOI: 10.1161/atvbaha.117.309602] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 10/10/2017] [Indexed: 11/16/2022]
Abstract
Objective—
We aimed to determine whether autoantibodies against apoA-1 (apolipoprotein A-1; anti-apoA-1 IgG) predict incident coronary artery disease (CAD), defined as adjudicated incident myocardial infarction, angina, percutaneous coronary revascularization, or bypass grafting, in the general population. We further investigated whether this association is modulated by a functional CD14 receptor single nucleotide polymorphism.
Approach and Results—
In a prospectively studied, population-based cohort of 5220 subjects (mean age 52.6±10.7 years, 47.4% males), followed over a median period of 5.6 years, subjects positive versus negative for anti-apoA-1 IgG presented a total CAD rate of 3.9% versus 2.8% (
P
=0.077) and a nonfatal CAD rate of 3.6% versus 2.3% (
P
=0.018), respectively. After multivariate adjustment for established cardiovascular risk factors, the hazard ratios of anti-apoA-1 IgG for total and nonfatal CAD were: hazard ratio=1.36 (95% confidence interval, 0.94–1.97;
P
=0.105) and hazard ratio=1.53 (95% confidence interval, 1.03–2.26;
P
=0.034), respectively. In subjects with available genetic data for the C260T
rs2569190
single nucleotide polymorphism in the CD14 receptor gene (n=4247), we observed a significant interaction between anti-apoA-1 IgG and
rs2569190
allele status with regards to CAD risk, with anti-apoA-1 IgG conferring the highest risk for total and nonfatal CAD in non-TT carriers, whereas being associated with the lowest risk for total and nonfatal CAD in TT homozygotes (
P
for interaction =0.011 and
P
for interaction =0.033, respectively).
Conclusions—
Anti-apoA-1 IgG are independent predictors of nonfatal incident CAD in the general population. The strength of this association is dependent on a functional polymorphism of the CD14 receptor gene, a finding suggesting a gene–autoantibody interaction for the development of CAD.
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Affiliation(s)
- Panagiotis Antiochos
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Pedro Marques-Vidal
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Julien Virzi
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Sabrina Pagano
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Nathalie Satta
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Oliver Hartley
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Fabrizio Montecucco
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - François Mach
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Zoltan Kutalik
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Gerard Waeber
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Peter Vollenweider
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
| | - Nicolas Vuilleumier
- From the Department of Internal Medicine, University Hospital of Lausanne, Switzerland (P.A., P.M.-V., G.W., P.V.); Division of Laboratory Medicine, Department of Genetics and Laboratory Medicine, Geneva University Hospitals, Switzerland (J.V., S.P., N.S., F. Montecucco, N.V.); Department of Human Protein Sciences, Faculty of Medicine, (J.V., S.P., N.S., N.V.), Department of Pathology and Immunology, Faculty of Medicine (O.H.), and Division of Cardiology, Foundation for Medical Researches,
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Dietary and Endogenous Sphingolipid Metabolism in Chronic Inflammation. Nutrients 2017; 9:nu9111180. [PMID: 29143791 PMCID: PMC5707652 DOI: 10.3390/nu9111180] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 10/21/2017] [Accepted: 10/25/2017] [Indexed: 12/13/2022] Open
Abstract
Chronic inflammation is a common underlying factor in many major metabolic diseases afflicting Western societies. Sphingolipid metabolism is pivotal in the regulation of inflammatory signaling pathways. The regulation of sphingolipid metabolism is in turn influenced by inflammatory pathways. In this review, we provide an overview of sphingolipid metabolism in mammalian cells, including a description of sphingolipid structure, biosynthesis, turnover, and role in inflammatory signaling. Sphingolipid metabolites play distinct and complex roles in inflammatory signaling and will be discussed. We also review studies examining dietary sphingolipids and inflammation, derived from in vitro and rodent models, as well as human clinical trials. Dietary sphingolipids appear to influence inflammation-related chronic diseases through inhibiting intestinal lipid absorption, altering gut microbiota, activation of anti-inflammatory nuclear receptors, and neutralizing responses to inflammatory stimuli. The anti-inflammatory effects observed with consuming dietary sphingolipids are in contrast to the observation that most cellular sphingolipids play roles in augmenting inflammatory signaling. The relationship between dietary sphingolipids and low-grade chronic inflammation in metabolic disorders is complex and appears to depend on sphingolipid structure, digestion, and metabolic state of the organism. Further research is necessary to confirm the reported anti-inflammatory effects of dietary sphingolipids and delineate their impacts on endogenous sphingolipid metabolism.
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Chan W, Bosch JA, Phillips AC, Chin SH, Antonysunil A, Inston N, Moore S, Kaur O, McTernan PG, Borrows R. The Associations of Endotoxemia With Systemic Inflammation, Endothelial Activation, and Cardiovascular Outcome in Kidney Transplantation. J Ren Nutr 2017; 28:13-27. [PMID: 29089280 DOI: 10.1053/j.jrn.2017.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 05/09/2017] [Accepted: 06/14/2017] [Indexed: 02/07/2023] Open
Abstract
OBJECTIVE Cardiovascular disease is the leading cause of death in kidney transplant recipients (KTRs), yet incompletely accountable by traditional risk factors. Inflammation is an unconventional cardiovascular risk factor, with gut-derived endotoxemia potentially driving inflammation and endothelial disease. Comparable data are lacking in kidney transplantation. This study investigated the associations of endotoxemia with inflammation, endothelial activation, and 5-year cardiovascular events in KTRs. Determinants of endotoxemia were also explored. DESIGN AND METHODS This is a single-center cross-sectional study with prospective follow-up from a prevalent cohort of 128 KTRs. MAIN OUTCOME MEASURES Demographic, nutritional and clinical predictors of inflammation (high-sensitivity C-reactive protein [hsCRP]), endothelial activation (sE-selectin), and endotoxemia (endotoxin) were assessed. Follow-up data on 5-year cardiovascular event rates were collected. RESULTS Endotoxemia (P = .03), reduced 25-hydroxyvitamin D (P = .04), high fructose intake (P < .001), decreased fiber intake (P < .001), and abdominal obesity (P = .002) were independently associated with elevated hsCRP. In turn, endotoxemia (P = .007) and increasing hsCRP (P = .02) were both independently associated with raised sE-selectin. Furthermore, endotoxemia predicted increased cardiovascular event rate (P = .02), independent of hsCRP and a global measure of cardiovascular risk estimated by a validated algorithm of 7-year risk for major adverse cardiac events in kidney transplantation. Determinants of endotoxemia included reduced 25-hydroxyvitamin D (P < .001), hypertriglyceridemia (P < .001), increased fructose intake (P = .01), and abdominal obesity (P = .01). CONCLUSIONS Endotoxemia in KTRs contributes to inflammation, endothelial activation, and increased cardiovascular events. This study highlights the clinical relevance of endotoxemia in KTRs, suggesting future interventional targets.
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Affiliation(s)
- Winnie Chan
- Department of Nephrology & Kidney Transplantation, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK; School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham, UK; Department of Nutrition & Dietetics, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK
| | - Jos A Bosch
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham, UK; Department of Clinical Psychology, University of Amsterdam, Amsterdam, The Netherlands
| | - Anna C Phillips
- School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Shui Hao Chin
- Department of Cardiovascular Sciences, Clinical Sciences Wing, University of Leicester, Glenfield Hospital, Leicester, UK
| | - Adaikala Antonysunil
- Division of Biomedical Sciences, Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, Coventry, UK
| | - Nicholas Inston
- Department of Nephrology & Kidney Transplantation, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK
| | - Sue Moore
- Department of Nephrology & Kidney Transplantation, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK
| | - Okdeep Kaur
- Imperial Centre for Translational and Experimental Medicine, Imperial College London, Hammersmith Hospital, London, UK
| | - Philip G McTernan
- Division of Biomedical Sciences, Clinical Sciences Research Laboratories, Warwick Medical School, University of Warwick, Coventry, UK.
| | - Richard Borrows
- Department of Nephrology & Kidney Transplantation, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, UK; Centre for Translational Inflammation Research, University of Birmingham, Edgbaston, Birmingham, UK.
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34
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Nielson CM, Wiedrick J, Shen J, Jacobs J, Baker ES, Baraff A, Piehowski P, Lee CG, Baratt A, Petyuk V, McWeeney S, Lim JY, Bauer DC, Lane NE, Cawthon PM, Smith RD, Lapidus J, Orwoll ES. Identification of Hip BMD Loss and Fracture Risk Markers Through Population-Based Serum Proteomics. J Bone Miner Res 2017; 32:1559-1567. [PMID: 28316103 PMCID: PMC5489383 DOI: 10.1002/jbmr.3125] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 02/22/2017] [Accepted: 03/06/2017] [Indexed: 01/16/2023]
Abstract
Serum proteomics analysis may lead to the discovery of novel osteoporosis biomarkers. The Osteoporotic Fractures in Men (MrOS) study comprises men ≥65 years old in the US who have had repeated BMD measures and have been followed for incident fracture. High-throughput quantitative proteomic analysis was performed on baseline fasting serum samples from non-Hispanic white men using a multidimensional approach coupling liquid chromatography, ion-mobility separation, and mass spectrometry (LC-IMS-MS). We followed the participants for a mean of 4.6 years for changes in femoral neck bone mineral density (BMD) and for incident hip fracture. Change in BMD was determined from mixed effects regression models taking age and weight into account. Participants were categorized into three groups: BMD maintenance (no decline; estimated change ≥0 g/cm2 , n = 453); expected loss (estimated change 0 to 1 SD below the estimated mean change, -0.034 g/cm2 for femoral neck, n = 1184); and accelerated loss (estimated change ≥1 SD below mean change, n = 237). Differential abundance values of 3946 peptides were summarized by meta-analysis to determine differential abundance of each of 339 corresponding proteins for accelerated BMD loss versus maintenance. Using this meta-analytic standardized fold change at cutoffs of ≥1.1 or ≤0.9 (p < 0.10), 20 proteins were associated with accelerated BMD loss. Associations of those 20 proteins with incident hip fracture were tested using Cox proportional hazards models with age and BMI adjustment in 2473 men. Five proteins were associated with incident hip fracture (HR between 1.29 and 1.41 per SD increase in estimated protein abundance). Some proteins have been previously associated with fracture risk (eg, CD14 and SHBG), whereas others have roles in cellular senescence and aging (B2MG and TIMP1) and complement activation and innate immunity (CO7, CO9, CFAD). These findings may inform development of biomarkers for future research in bone biology and fracture prediction. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Carrie M Nielson
- OHSU-PSU School of Public Health, Oregon Health & Science University, Portland, OR, USA
- Bone and Mineral Unit, Oregon Health & Science University, Portland, OR, USA
| | - Jack Wiedrick
- Biostatistics and Design Program, OHSU-PSU School of Public Health, Oregon Health & Science University, Portland, OR, USA
| | - Jian Shen
- Bone and Mineral Unit, Oregon Health & Science University, Portland, OR, USA
| | - Jon Jacobs
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Erin S Baker
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Aaron Baraff
- Division of Biostatistics, Oregon Health & Science University, Portland, OR, USA
| | - Paul Piehowski
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Christine G Lee
- Research Service, Portland Veterans Affairs Medical Center, Portland, OR, USA
| | - Arie Baratt
- Division of Bioinformatics and Computational Biology, Oregon Health & Science University, Portland, OR, USA
| | - Vladislav Petyuk
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Shannon McWeeney
- Division of Bioinformatics and Computational Biology, Oregon Health & Science University, Portland, OR, USA
| | - Jeong Youn Lim
- Division of Biostatistics, Oregon Health & Science University, Portland, OR, USA
| | - Douglas C Bauer
- Department of Medicine, University of California, San Francisco, CA, USA
| | - Nancy E Lane
- Department of Internal Medicine, University of California at Davis, Sacramento, CA, USA
| | - Peggy M Cawthon
- California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - Richard D Smith
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jodi Lapidus
- Biostatistics and Design Program, OHSU-PSU School of Public Health, Oregon Health & Science University, Portland, OR, USA
| | - Eric S Orwoll
- Bone and Mineral Unit, Oregon Health & Science University, Portland, OR, USA
- Department of Medicine, Oregon Health & Science University, Portland, OR, USA
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35
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Kyrgidis A, Yavropoulou MP, Lagoudaki R, Andreadis C, Antoniades K, Kouvelas D. Increased CD14+ and decreased CD14- populations of monocytes 48 h after zolendronic acid infusion in breast cancer patients. Osteoporos Int 2017; 28:991-999. [PMID: 27858122 DOI: 10.1007/s00198-016-3807-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 10/06/2016] [Indexed: 11/24/2022]
Abstract
UNLABELLED It has been proposed that bisphosphonates cause osteonecrosis of the jaws through impairment of the monocyte population function and proliferation. Such changes have been confirmed in jaw tissues, ex vivo. In this clinical study, we report for the first time a similar pattern of changes in peripheral blood monocytes. INTRODUCTION The aim of this study is to examine the effect of zolendronic acid administration in the peripheral blood white cell population, seeking a plausible pathophysiological link between bisphosphonates and osteonecrosis of the jaw. METHODS Twenty-four breast cancer patients, under zolendronic acid treatment for bone metastasis, were included. Peripheral blood samples were obtained prior to and 48 h following zolendronic acid administration. Flow cytometry gated at leukocyte, monocyte, and the granulocyte populations for the CD4/CD8/CD3, CD3/CD16+56/CD45/CD19, CD14/CD123, and CD14/23 stainings were performed. RESULTS We were able to record a number of changes in the white cell populations after 48 h of zolendronic acid administration. Most importantly, in the monocyte populations, we were able to detect statistically significant increased populations of CD14+/CD23+ (p = 0.038), CD14+/CD23- (p = 0.028), CD14+/CD123+ (p = 0.070, trend), and CD14+/CD123- (p = 0.043). In contrast, statistically significant decreased populations of CD14-/CD23+ (p = 0.037) and CD14-/CD123+ (p = 0.003) were detected. CONCLUSIONS Our results provide evidence supporting the hypothesis that bisphosphonate administration modifies the monocyte-mediated immune response. An increase of CD14+ peripheral blood monocyte (PBMC) populations along with a decrease of CD14- PBMC populations has been recorded. The latter finding is in accordance with limited-currently existing-evidence and warrants further elucidation.
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Affiliation(s)
- A Kyrgidis
- Department of Pharmacology, Clinical Pharmacology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece.
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - M P Yavropoulou
- Laboratory of Clinical and Molecular Endocrinology, 1st Department of Internal Medicine, AHEPA University Hospital, Thessaloniki, Greece
| | - R Lagoudaki
- Department of Neurology, AHEPA University Hospital, Thessaloniki, Greece
| | - C Andreadis
- 3rd Department of Clinical Oncology, Theagenio Cancer Hospital, Thessaloniki, Greece
| | - K Antoniades
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - D Kouvelas
- Department of Pharmacology, Clinical Pharmacology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Lévêque M, Jeune KSL, Jouneau S, Moulis S, Desrues B, Belleguic C, Brinchault G, Le Trionnaire S, Gangneux JP, Dimanche-Boitrel MT, Martin-Chouly C. Soluble CD14 acts as a DAMP in human macrophages: origin and involvement in inflammatory cytokine/chemokine production. FASEB J 2017; 31:1891-1902. [DOI: 10.1096/fj.201600772r] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 01/09/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Manuella Lévêque
- Stress Membrane and Signaling TeamResearch Institute for Environmental and Occupational Health (IRSET)INSERM Unité 1085RennesFrance
- Unité Mixte de Service 3480 BiositUniversity of Rennes 1RennesFrance
| | - Karin Simonin-Le Jeune
- Stress Membrane and Signaling TeamResearch Institute for Environmental and Occupational Health (IRSET)INSERM Unité 1085RennesFrance
- Unité Mixte de Service 3480 BiositUniversity of Rennes 1RennesFrance
| | - Stéphane Jouneau
- Chemical Contaminant Immunity and Inflammation TeamResearch Institute for Environmental and Occupational Health (IRSET)INSERM Unité 1085RennesFrance
- Unité Mixte de Service 3480 BiositUniversity of Rennes 1RennesFrance
- Centre de Ressource et de Compétences de la MucoviscidoseCentre Hospitalier Universitaire de RennesRennesFrance
| | - Solenn Moulis
- Stress Membrane and Signaling TeamResearch Institute for Environmental and Occupational Health (IRSET)INSERM Unité 1085RennesFrance
- Unité Mixte de Service 3480 BiositUniversity of Rennes 1RennesFrance
| | - Benoit Desrues
- Unité Mixte de Service 3480 BiositUniversity of Rennes 1RennesFrance
- Centre de Ressource et de Compétences de la MucoviscidoseCentre Hospitalier Universitaire de RennesRennesFrance
- Chemistry, Oncogenesis, Stress and Signaling (COSS)Centre Eugène MarquisINSERM Unité 1242RennesFrance
| | - Chantal Belleguic
- Centre de Ressource et de Compétences de la MucoviscidoseCentre Hospitalier Universitaire de RennesRennesFrance
| | - Graziella Brinchault
- Centre de Ressource et de Compétences de la MucoviscidoseCentre Hospitalier Universitaire de RennesRennesFrance
| | - Sophie Le Trionnaire
- Stress Membrane and Signaling TeamResearch Institute for Environmental and Occupational Health (IRSET)INSERM Unité 1085RennesFrance
- Unité Mixte de Service 3480 BiositUniversity of Rennes 1RennesFrance
| | - Jean-Pierre Gangneux
- Unité Mixte de Service 3480 BiositUniversity of Rennes 1RennesFrance
- Centre de Ressource et de Compétences de la MucoviscidoseCentre Hospitalier Universitaire de RennesRennesFrance
| | - Marie-Thérèse Dimanche-Boitrel
- Stress Membrane and Signaling TeamResearch Institute for Environmental and Occupational Health (IRSET)INSERM Unité 1085RennesFrance
- Unité Mixte de Service 3480 BiositUniversity of Rennes 1RennesFrance
| | - Corinne Martin-Chouly
- Stress Membrane and Signaling TeamResearch Institute for Environmental and Occupational Health (IRSET)INSERM Unité 1085RennesFrance
- Unité Mixte de Service 3480 BiositUniversity of Rennes 1RennesFrance
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Liu B, Guan Q, Li J, da Roza G, Wang H, Du C. Mesenchymal stroma cells in peritoneal dialysis effluents from patients. Hum Cell 2017; 30:51-59. [PMID: 28058621 PMCID: PMC5357254 DOI: 10.1007/s13577-016-0155-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 12/01/2016] [Indexed: 01/27/2023]
Abstract
Mesenchymal stroma cells (MSCs) have potential as an emerging cell therapy for treating many different diseases, but discovery of the practical sources of MSCs is needed for the large-scale clinical application of this therapy. This study was to identify MSCs in peritoneal dialysis (PD) effluents that were discarded after PD. The effluents were collected from patients who were on the dialysis for less than 1 month. Adherent cells from the effluents were isolated by incubation in serum-containing medium in plastic culture dishes. Cell surface markers were determined by a flow cytometric analysis, and the in vitro differentiation to chondrocytes, osteocytes or adipocytes was confirmed by staining with a specific dye. After four passages, these isolated cells displayed the typical morphology of mesenchymal cells in traditional 2-D cultures, and were grown to form spherical colonies in 3-D collagen cultures. Flow cytometric analysis revealed that the unsorted cells from all of seven patient samples showed robust expression of typical mesenchymal marker CD29, CD44, CD73, CD90 and CD166, and the absence of CD34, CD79a, CD105, CD271, SSEA-4, Stro-1 and HLA-DR. In differentiation assays, these cells were induced in vitro to chondrocytes, osteocytes or adipocytes. In conclusion, this preliminary study suggests the presence of MSCs in the “discarded” PD effluents. Further characterization of the phenotypes of these MSCs and evaluation of their therapeutic potential, particularly for the prevention of PD failure, are needed.
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Affiliation(s)
- Bin Liu
- Department of Critical Care Medicine, Tianjin Medical University General Hospital, Tianjin, 300052, China
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Qiunong Guan
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
| | - Jing Li
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada
- Department of Anesthesiology, General Hospital of Tianjin Medical University, Tianjin, 300052, China
| | - Gerald da Roza
- Fraser Health Nephrology, Royal Columbian Hospital, New Westminster, BC, Canada
| | - Hao Wang
- Department of General Surgery, Tianjin Medical University General Hospital,154 Anshan Road, Heping District, Tianjin, 300052, China.
| | - Caigan Du
- Department of Urologic Sciences, University of British Columbia, Vancouver, BC, Canada.
- Jack Bell Research Centre, Room 250A, 2660 Oak Street, Vancouver, BC, V6H 3Z6, Canada.
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Pupovac A, Sluyter R. Roles of extracellular nucleotides and P2 receptors in ectodomain shedding. Cell Mol Life Sci 2016; 73:4159-4173. [PMID: 27180276 PMCID: PMC11108277 DOI: 10.1007/s00018-016-2274-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 05/10/2016] [Indexed: 02/03/2023]
Abstract
Ectodomain shedding of integral membrane receptors results in the release of soluble molecules and modification of the transmembrane portions to mediate or modulate extracellular and intracellular signalling. Ectodomain shedding is stimulated by a variety of mechanisms, including the activation of P2 receptors by extracellular nucleotides. This review describes in detail the roles of extracellular nucleotides and P2 receptors in the shedding of various cell surface molecules, including amyloid precursor protein, CD23, CD62L, and members of the epidermal growth factor, immunoglobulin and tumour necrosis factor families. This review discusses the mechanisms involved in P2 receptor-mediated shedding, demonstrating central roles for the P2 receptors, P2X7 and P2Y2, and the sheddases, ADAM10 and ADAM17, in this process in a number of cell types.
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Affiliation(s)
- Aleta Pupovac
- School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia
- Centre for Medical and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
| | - Ronald Sluyter
- School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia.
- Centre for Medical and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia.
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.
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Reisbeck M, Helou MJ, Richter L, Kappes B, Friedrich O, Hayden O. Magnetic fingerprints of rolling cells for quantitative flow cytometry in whole blood. Sci Rep 2016; 6:32838. [PMID: 27596736 PMCID: PMC5011763 DOI: 10.1038/srep32838] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 08/15/2016] [Indexed: 01/15/2023] Open
Abstract
Over the past 50 years, flow cytometry has had a profound impact on preclinical and clinical applications requiring single cell function information for counting, sub-typing and quantification of epitope expression. At the same time, the workflow complexity and high costs of such optical systems still limit flow cytometry applications to specialized laboratories. Here, we present a quantitative magnetic flow cytometer that incorporates in situ magnetophoretic cell focusing for highly accurate and reproducible rolling of the cellular targets over giant magnetoresistance sensing elements. Time-of-flight analysis is used to unveil quantitative single cell information contained in its magnetic fingerprint. Furthermore, we used erythrocytes as a biological model to validate our methodology with respect to precise analysis of the hydrodynamic cell diameter, quantification of binding capacity of immunomagnetic labels, and discrimination of cell morphology. The extracted time-of-flight information should enable point-of-care quantitative flow cytometry in whole blood for clinical applications, such as immunology and primary hemostasis.
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Affiliation(s)
- Mathias Reisbeck
- In-Vitro DX &Bioscience, Department of Strategy and Innovation, Siemens Healthcare GmbH, Günther-Scharowsky-Str. 1, 91058 Erlangen, Germany.,Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Paul-Gordan-Str. 3, 91052 Erlangen, Germany
| | - Michael Johannes Helou
- In-Vitro DX &Bioscience, Department of Strategy and Innovation, Siemens Healthcare GmbH, Günther-Scharowsky-Str. 1, 91058 Erlangen, Germany
| | - Lukas Richter
- In-Vitro DX &Bioscience, Department of Strategy and Innovation, Siemens Healthcare GmbH, Günther-Scharowsky-Str. 1, 91058 Erlangen, Germany
| | - Barbara Kappes
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Paul-Gordan-Str. 3, 91052 Erlangen, Germany
| | - Oliver Friedrich
- Institute of Medical Biotechnology, Department of Chemical and Biological Engineering, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Paul-Gordan-Str. 3, 91052 Erlangen, Germany
| | - Oliver Hayden
- In-Vitro DX &Bioscience, Department of Strategy and Innovation, Siemens Healthcare GmbH, Günther-Scharowsky-Str. 1, 91058 Erlangen, Germany
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Immune infiltration and PD-L1 expression in the tumor microenvironment are prognostic in osteosarcoma. Sci Rep 2016; 6:30093. [PMID: 27456063 PMCID: PMC4960483 DOI: 10.1038/srep30093] [Citation(s) in RCA: 195] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 06/10/2016] [Indexed: 12/11/2022] Open
Abstract
Osteosarcoma patient survival has remained stagnant for 30 years. Novel therapeutic approaches are needed to improve outcomes. We examined the expression of Programmed Death Ligand 1 (PD-L1) and defined the tumor immune microenvironment to assess the prognostic utility in osteosarcoma. PD-L1 expression in osteosarcoma was examined in two patient cohorts using immunohistochemistry (IHC) (n = 48, n = 59) and expression was validated using quantitative real time PCR (n = 21) and western blotting (n = 9). IHC was used to determine the presence of tumor infiltrating lymphocytes and antigen-presenting cells (APCs) in the tumor. Expression of PD-L1 was correlated with immune cell infiltration and event-free-survival (EFS). The 25% of primary osteosarcoma tumors that express PD-L1 were more likely to contain cells that express PD-1 than PD-L1 negative tumors (91.7% vs 47.2%, p = 0.002). Expression of PD-L1 was significantly associated with the presence of T cells, dendritic cells, and natural killer cells. Although all immune cell types examined were present in osteosarcoma samples, only infiltration by dendritic cells (28.3% vs. 83.9%, p = 0.001) and macrophages (45.5% vs. 84.4%, p = 0.031) were associated with worse five-year-EFS. PD-L1 expression was significantly associated with poorer five-year-EFS (25.0%. vs. 69.4%, p = 0.014). Further studies in osteosarcoma are needed to determine if targeting the PD-L1:PD-1 axis improves survival.
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Leifer CA, Medvedev AE. Molecular mechanisms of regulation of Toll-like receptor signaling. J Leukoc Biol 2016; 100:927-941. [PMID: 27343013 DOI: 10.1189/jlb.2mr0316-117rr] [Citation(s) in RCA: 184] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 06/01/2016] [Indexed: 01/22/2023] Open
Abstract
TLRs play a critical role in the detection of microbes and endogenous "alarmins" to initiate host defense, yet they can also contribute to the development and progression of inflammatory and autoimmune diseases. To avoid pathogenic inflammation, TLR signaling is subject to multilayer regulatory control mechanisms, including cooperation with coreceptors, post-translational modifications, cleavage, cellular trafficking, and interactions with negative regulators. Nucleic acid-sensing TLRs are particularly interesting in this regard, as they can both recognize host-derived structures and require internalization of their ligand as a result of intracellular sequestration of the nucleic acid-sensing TLRs. This review summarizes the regulatory mechanisms of TLRs, including regulation of their access to ligands, receptor folding, intracellular trafficking, and post-translational modifications, as well as how altered control mechanism could contribute to inflammatory and autoimmune disorders.
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Affiliation(s)
- Cynthia A Leifer
- Department of Microbiology and Immunology, Cornell University, Ithaca, New York, USA; and
| | - Andrei E Medvedev
- Department of Immunology, University of Connecticut Heath Center, Farmington, Connecticut, USA
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Gould NJ, Davidson KL, Nwokolo CU, Arasaradnam RP. A systematic review of the role of DNA methylation on inflammatory genes in ulcerative colitis. Epigenomics 2016; 8:667-84. [PMID: 27096966 DOI: 10.2217/epi-2016-0006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Ulcerative colitis (UC) is an idiopathic disease of the large intestine with evidence pointing to the role of epigenetic changes. METHODS Searches were performed in three databases (EMBASE, MEDLINE and Web of Science), following PRISMA protocol. DNA methylation was the only epigenetic mechanism affecting genes linked to inflammatory response in UC. RESULTS A total of 25 differentially methylated inflammatory genes were identified. Hypermethylation of miR-1247 significantly correlates (p = 0.0006) with refractory UC while PAR2 hypermethylation correlates (p = 0.007) with corticosteroid dependence. CONCLUSION Evidence points to a step-wise increase in methylation status of the genome between a healthy colon, quiescent UC and when inflamed. Inflammatory genes (which are aberrantly methylated), have also been implicated in cancer development in UC.
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Affiliation(s)
| | | | - Chuka U Nwokolo
- Department of Gastroenterology, University Hospital Coventry & Warwickshire, CV2 2DX, UK
| | - Ramesh P Arasaradnam
- Department of Gastroenterology, University Hospital Coventry & Warwickshire, CV2 2DX, UK.,Clinical Sciences Research Institute, University Hospital Coventry & Warwickshire, CV2 2DX, UK
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Ballweg IC, Frölich K, Fandrey E, Kliem H, Pfaffl MW. Comparison of the immune competence of Turopolje, German Landrace × Turopolje, and German Landrace × Pietrain pigs after PRRSV vaccination. Vet Immunol Immunopathol 2016; 174:35-44. [PMID: 27185261 DOI: 10.1016/j.vetimm.2016.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 03/27/2016] [Accepted: 04/04/2016] [Indexed: 11/16/2022]
Abstract
The competences of the immune systems of the ancient pig breed Turopolje (T×T), German Landrace × Turopolje (L×T) and 'modern' pig breed German Landrace × Pietrain (L×P) were compared in this study. All pigs were immunized with a modified live vaccine against 'Porcine Reproductive and Respiratory Syndrome' (PRRS) virus (Ingelvac PRRS MLV(®)) to simulate an infection. Antibody production against PRRS MLV was evaluated in serum. Elimination of the viral infectious fragments during the experimental period was monitored in serum, leukocytes and tonsils by RT-qPCR. Furthermore relevant immune marker genes were quantified either on gene expression level using RT-qPCR [toll like receptor (TLR) 7, TLR8, TRAF6, CD163, SIGLEC1, CD4, CD8, CD14, CD19, tumor necrosis factor alpha (TNFα), interleukin (IL) 1, IL2, IL6, IL12], and on protein level using ELISA [interleukin (IL)-1, IL-2, IL-6, and IL-12]. The three breeds showed individual inactivation efficiencies as a reaction to the PRRS MLV vaccination. T×T eliminated the virus in serum within 16 days, followed by L×T (28 days) and L×P (36 days). The antibody titers against PRRS MLV of L×T and L×P were significantly higher compared to T×T (p<0.05). The gene expression data and protein analysis of interleukins revealed that T×T reacted with a type 1 immune response. In contrast, the two other breeds (L×T and L×P) showed a type 2 immune response, which resulted in the higher synthesis of B-cells and an increased concentration of specific anti-PRRS MLV antibodies.
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Affiliation(s)
- I C Ballweg
- Physiology Weihenstephan, School of Life Sciences, Technische Universität München, 85354 Freising, Weihenstephan, Germany
| | - K Frölich
- Arche Warder, Zentrum für alte Haus-und Nutztierrassen e.V., 24646 Warder, Germany
| | - E Fandrey
- Manhagen-Fuhlenau GbR, 24631 Langwedel, Germany
| | - H Kliem
- Physiology Weihenstephan, School of Life Sciences, Technische Universität München, 85354 Freising, Weihenstephan, Germany.
| | - M W Pfaffl
- Physiology Weihenstephan, School of Life Sciences, Technische Universität München, 85354 Freising, Weihenstephan, Germany
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Moghadampour M, Eskandari-Nasab E, Shabani F. Relationship between CD14-159C/T gene polymorphism and acute brucellosis risk. ASIAN PAC J TROP MED 2016; 9:247-51. [PMID: 26972395 PMCID: PMC7104939 DOI: 10.1016/j.apjtm.2016.01.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 12/20/2015] [Accepted: 12/30/2015] [Indexed: 12/19/2022] Open
Abstract
Objective To investigate the association between the cluster of differentiation 14 (CD14)-159C/T (rs2569190) gene polymorphism and susceptibility to acute brucellosis in an Iranian population. Methods The study included 153 Iranian patients with active brucellosis and 128 healthy individuals as the control group. Genotyping of the CD14 variant was performed using an amplification refractory mutation system-polymerase chain reaction method. Results The prevalence of CD14-159 TT and CT genotypes were associated with increased risk of brucellosis [odds ratio (OR) = 1.993, 95% confidence interval (95% CI) = 1.07–3.71, P = 0.03 for CT; OR = 3.869, 95% CI = 1.91–7.84, P = 0.01 for TT genotype. Additionally, the minor allele (T) was significantly more frequently present in brucellosis patients than in controls (61% vs. 45%, respectively), and was a risk factor for brucellosis (OR = 3.058, 95% CI = 1.507–6.315, P = 0.01). Conclusions The findings provided suggestive evidence of association of the CD14-159C/T gene polymorphism with susceptibility to acute brucellosis in the Iranian population.
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Affiliation(s)
- Mehdi Moghadampour
- Department of Microbiology, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran; Infectious Diseases and Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Ebrahim Eskandari-Nasab
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran; Genetic of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
| | - Fatemeh Shabani
- School of Medicine, Jiroft University of Medical Sciences, Jiroft, Kerman, Iran
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Stifano G, Christmann RB. Macrophage Involvement in Systemic Sclerosis: Do We Need More Evidence? Curr Rheumatol Rep 2015; 18:2. [DOI: 10.1007/s11926-015-0554-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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46
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Bank IEM, Timmers L, Gijsberts CM, Zhang YN, Mosterd A, Wang JW, Chan MY, De Hoog V, Lim SK, Sze SK, Lam CSP, De Kleijn DPV. The diagnostic and prognostic potential of plasma extracellular vesicles for cardiovascular disease. Expert Rev Mol Diagn 2015; 15:1577-88. [DOI: 10.1586/14737159.2015.1109450] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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47
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Contreras G, Kabara E, Brester J, Neuder L, Kiupel M. Macrophage infiltration in the omental and subcutaneous adipose tissues of dairy cows with displaced abomasum. J Dairy Sci 2015; 98:6176-87. [DOI: 10.3168/jds.2015-9370] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 05/11/2015] [Indexed: 01/14/2023]
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48
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Carey AJ, Sullivan MJ, Duell BL, Crossman DK, Chattopadhyay D, Brooks AJ, Tan CK, Crowley M, Sweet MJ, Schembri MA, Ulett GC. Uropathogenic Escherichia coli Engages CD14-Dependent Signaling to Enable Bladder-Macrophage-Dependent Control of Acute Urinary Tract Infection. J Infect Dis 2015; 213:659-68. [PMID: 26324782 DOI: 10.1093/infdis/jiv424] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 08/11/2015] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND CD14, a coreceptor for several pattern recognition receptors and a widely used monocyte/macrophage marker, plays a key role in host responses to gram-negative bacteria. Despite the central role of CD14 in the inflammatory response to lipopolysaccharide and other microbial products and in the dissemination of bacteria in some infections, the signaling networks controlled by CD14 during urinary tract infection (UTI) are unknown. METHODS We used uropathogenic Escherichia coli (UPEC) infection of wild-type (WT) C57BL/6 and Cd14(-/-) mice and RNA sequencing to define the CD14-dependent transcriptional signature and the role of CD14 in host defense against UTI in the bladder. RESULTS UPEC induced the upregulation of Cd14 and the monocyte/macrophage-related genes Emr1/F4/80 and Csf1r/c-fms, which was associated with lower UPEC burdens in WT mice, compared with Cd14(-/-) mice. Exacerbation of infection in Cd14(-/-) mice was associated with the absence of a 491-gene transcriptional signature in the bladder that encompassed multiple host networks not previously associated with this receptor. CD14-dependent pathways included immune cell trafficking, differential cytokine production in macrophages, and interleukin 17 signaling. Depletion of monocytes/macrophages in the bladder by administration of liposomal clodronate led to higher UPEC burdens. CONCLUSIONS This study identifies new host protective and signaling roles for CD14 in the bladder during UPEC UTI.
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Affiliation(s)
- Alison J Carey
- Menzies Health Institute Queensland, Griffith University, Gold Coast School of Medical Science, Griffith University, Gold Coast
| | - Matthew J Sullivan
- Menzies Health Institute Queensland, Griffith University, Gold Coast School of Medical Science, Griffith University, Gold Coast
| | - Benjamin L Duell
- Menzies Health Institute Queensland, Griffith University, Gold Coast School of Medical Science, Griffith University, Gold Coast
| | - David K Crossman
- Heflin Center for Human Genetics, School of Medicine, University of Alabama at Birmingham
| | - Debasish Chattopadhyay
- Division of Infectious Diseases, School of Medicine, University of Alabama at Birmingham
| | - Andrew J Brooks
- University of Queensland Diamantina Institute, The University of Queensland, Translational Research Institute
| | - Chee K Tan
- Menzies Health Institute Queensland, Griffith University, Gold Coast School of Medical Science, Griffith University, Gold Coast
| | - Michael Crowley
- Heflin Center for Human Genetics, School of Medicine, University of Alabama at Birmingham
| | - Matthew J Sweet
- Australian Infectious Diseases Research Centre, University of Queensland, Brisbane, Australia Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Mark A Schembri
- Australian Infectious Diseases Research Centre, University of Queensland, Brisbane, Australia School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Australia
| | - Glen C Ulett
- Menzies Health Institute Queensland, Griffith University, Gold Coast School of Medical Science, Griffith University, Gold Coast Division of Infectious Diseases, School of Medicine, University of Alabama at Birmingham
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Activation of TLR2 and TLR6 by Dengue NS1 Protein and Its Implications in the Immunopathogenesis of Dengue Virus Infection. PLoS Pathog 2015; 11:e1005053. [PMID: 26226614 PMCID: PMC4520596 DOI: 10.1371/journal.ppat.1005053] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 06/27/2015] [Indexed: 01/04/2023] Open
Abstract
Dengue virus (DV) infection is the most prevalent mosquito-borne viral disease and its manifestation has been shown to be contributed in part by the host immune responses. In this study, pathogen recognition receptors, Toll-like receptor (TLR) 2 and TLR6 were found to be up-regulated in DV-infected human PBMC using immunofluorescence staining, flow cytometry and Western blot analyses. Using ELISA, IL-6 and TNF-α, cytokines downstream of TLR2 and TLR6 signaling pathways were also found to be up-regulated in DV-infected PBMC. IL-6 and TNF-α production by PBMC were reduced when TLR2 and TLR6 were blocked using TLR2 and TLR6 neutralizing antibodies during DV infection. These results suggested that signaling pathways of TLR2 and TLR6 were activated during DV infection and its activation contributed to IL-6 and TNF-α production. DV NS1 protein was found to significantly increase the production of IL-6 and TNF-α when added to PBMC. The amount of IL-6 and TNF-α stimulated by DV NS1 protein was reduced when TLR2 and TLR6 were blocked, suggesting that DV NS1 protein is the viral protein responsible for the activation of TLR2 and TLR6 during DV infection. Secreted alkaline phosphatase (SEAP) reporter assay was used to further confirm activation of TLR2 and TLR6 by DV NS1 protein. In addition, DV-infected and DV NS1 protein-treated TLR6-/- mice have higher survivability compared to DV-infected and DV NS1 protein-treated wild-type mice. Hence, activation of TLR6 via DV NS1 protein could potentially play an important role in the immunopathogenesis of DV infection. Despite the prevalence of dengue virus infection and the heavy economic burden it puts on the endemic countries, the immunopathogenesis of dengue virus infection remains unclear. Plasma leakage in dengue hemorrhagic fever (DHF) develops not when the viremia is at its peak in infected patients but when viremia has been significantly reduced or cleared. This suggests that host immune response is responsible for the development DHF. The interactions of the viral factors with host factors which trigger the host immune responses are likely to play a significant role in the development of dengue diseases, thus are of great interests. In this study, we found that dengue NS1 protein activates TLR2 and TLR6, leading to increase proinflammatory cytokine production. In addition, the interaction of viral factor with TLR6 was found to play an important role in the manifestation of dengue virus infection. Our study provides new insights into the involvement of TLR6 in dengue virus infection and the potential of using TLR6 anatagonist in therapeutic treatment for DV infection.
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Hoover H, Li J, Marchese J, Rothwell C, Borawoski J, Jeffery DA, Gaither LA, Finkel N. Quantitative Proteomic Verification of Membrane Proteins as Potential Therapeutic Targets Located in the 11q13 Amplicon in Cancers. J Proteome Res 2015; 14:3670-9. [PMID: 26151158 DOI: 10.1021/acs.jproteome.5b00508] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Tumor types can be defined cytologically by their regions of chromosomal amplification, which often results in the high expression of both mRNA and proteins of certain genes contained within the amplicon. An important strategy for defining therapeutically relevant targets in these situations is to ascertain which genes are amplified at the protein level and, concomitantly, are key drivers for tumor growth or maintenance. Furthermore, so-called passenger genes that are amplified with driver genes and a manifest on the cell surface can be attractive targets for an antibody-drug conjugate approach (ADC). We employed a tandem mass spectrometry proteomics approach using tumor cell lines to identify the cell surface proteins whose expression correlates with the 11q13 amplicon. The 11q13 amplicon is one of the most frequently amplified chromosomal regions in human cancer, being present in 45% of head and neck and oral squamous cell carcinoma (OSCC) and 13-21% of breast and liver carcinomas. Using a panel of tumor cell lines with defined 11q13 genomic amplification, we identified the membrane proteins that are differentially expressed in an 11q13 amplified cell line panel using membrane-enriched proteomic profiling. We found that DSG3, CD109, and CD14 were differentially overexpressed in head and neck and breast tumor cells with 11q13 amplification. The level of protein expression of each gene was confirmed by Western blot and FACS analysis. Because proteins with high cell surface expression on selected tumor cells could be potential antibody drug conjugate targets, we tested DSG3 and CD109 in antibody piggyback assays and validated that DSG3 and CD109 expression was sufficient to induce antibody internalization and cell killing in 11q13-amplified cell lines. Our results suggest that proteomic profiling using genetically stratified tumors can identify candidate antibody drug conjugate targets. Data are available via ProteomeXchange with the identifier PXD002486.
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Affiliation(s)
- Heather Hoover
- Novartis Institutes for Biomedical Research , Cambridge, Massachusetts 02139, United States
| | - Jun Li
- Novartis Institutes for Biomedical Research , Cambridge, Massachusetts 02139, United States
| | - Jason Marchese
- Novartis Institutes for Biomedical Research , Cambridge, Massachusetts 02139, United States
| | - Christopher Rothwell
- Novartis Institutes for Biomedical Research , Cambridge, Massachusetts 02139, United States
| | - Jason Borawoski
- Novartis Institutes for Biomedical Research , Cambridge, Massachusetts 02139, United States
| | - Douglas A Jeffery
- Novartis Institutes for Biomedical Research , Cambridge, Massachusetts 02139, United States
| | - L Alex Gaither
- Novartis Institutes for Biomedical Research , Cambridge, Massachusetts 02139, United States
| | - Nancy Finkel
- Novartis Institutes for Biomedical Research , Cambridge, Massachusetts 02139, United States
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