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Pries R, Plötze-Martin K, Lange C, Behn N, Werner L, Bruchhage KL, Steffen A. Improved levels of checkpoint molecule PD-L1 on peripheral blood monocyte subsets in obstructive sleep apnea syndrome patients upon hypoglossal nerve stimulation. J Sleep Res 2024:e14178. [PMID: 38385644 DOI: 10.1111/jsr.14178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 02/02/2024] [Accepted: 02/07/2024] [Indexed: 02/23/2024]
Abstract
Oxidative stress in patients suffering from obstructive sleep apnea syndrome (OSAS) is associated with a low-grade systemic inflammation, immune disturbance, and increased invasion of monocytes into the endothelium. Besides continuous positive airway pressure (PAP), hypoglossal nerve stimulation (HNS) has become a promising treatment option for patients with OSAS. We aimed to analyse the influence of HNS therapy on the cellular characteristics relevant for adhesion and immune regulation of circulating CD14/CD16 monocyte subsets. Whole blood flow cytometric measurements were performed to analyse the expression levels of different adhesion molecules and checkpoint molecule PD-L1 (programmed death-ligand 1) in connection with pro-inflammatory plasma cytokine IL-8 and the clinical values of BMI (body mass index), AHI (apnea-hypopnea index), ODI (oxygen desaturation index), and ESS (Epworth sleepiness scale) upon HNS treatment. Hypoglossal nerve stimulation treatment significantly improved the expression of adhesion molecule CD162 (P-selectin receptor) on non-classical monocytes and significantly downregulated the expression of PD-L1 on all three monocyte subsets. We conclude that the holistic improvement of different parameters such as the oxygenation of the peripheral blood, a reduced systemic inflammation, and the individual sleeping situation upon HNS respiratory support, leads to an improved immunologic situation.
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Affiliation(s)
- Ralph Pries
- Department of Otorhinolaryngology, University of Luebeck, Luebeck, Germany
| | | | - Christian Lange
- Department of Otorhinolaryngology, University of Luebeck, Luebeck, Germany
| | - Nicole Behn
- Department of Otorhinolaryngology, University of Luebeck, Luebeck, Germany
| | - Lotte Werner
- Department of Otorhinolaryngology, University of Luebeck, Luebeck, Germany
| | | | - Armin Steffen
- Department of Otorhinolaryngology, University of Luebeck, Luebeck, Germany
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2
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Yang L, Gao Q, Li Q, Guo S. PD-L1 Blockade Improves Survival in Sepsis by Reversing Monocyte Dysfunction and Immune Disorder. Inflammation 2024; 47:114-128. [PMID: 37776443 PMCID: PMC10799109 DOI: 10.1007/s10753-023-01897-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/26/2023] [Accepted: 08/25/2023] [Indexed: 10/02/2023]
Abstract
Monocyte dysfunction is critical to sepsis-induced immunosuppression. Programmed death ligand-1 (PD-L1) has shown a close relationship with inflammatory disorder among animal models and patients. We aimed to investigate the potential beneficial immunologic mechanisms of anti-PD-L1 on monocyte dysfunction of mice with sepsis. Firstly, we assessed the potential association between PD-L1 expression on monocyte subsets and sepsis severity as well as 28-day mortality. In this study, 52 septic patients, 28 septic shock patients, and 40 healthy controls were enrolled and their peripheral whole blood was examined by flow cytometry. Then, cecal ligation and puncture (CLP) were performed for establishing the mouse sepsis model. Subsequently, effects of anti-PD-L1 antibody on monocyte subset, major histocompatibility complex II (MHC II) expression, cytokine production, and survival were investigated. PD-L1 expression on the classical monocytes (CD14 + + CD16 -) was significantly upregulated among septic shock patients and the 28-day death group than non-septic shock group and 28-day survival group (P < 0.05). Compared to septic mice, anti-PD-L1-treated mice had significantly elevated percentages of major histocompatibility complex (MHC) II on peripheral Ly6chi monocyte at 24 h after CLP. Our results showed that the anti-PD-L1 antibody markedly decreased the level of serum inflammatory cytokines interleukin (IL)-6, tumor necrosis factor (TNF)-α, and IL-10 in sepsis mice at 24 h, 48 h, and 72 h, respectively (P < 0.05). The survival rate of CLP mice was significantly improved by anti-PD-L1 antibody treatment. Classical monocytes with high expression of PD-L1 were thought to be connected with sepsis progression. The PD-L1 blockade protects from sepsis, at least partially by inhibiting the reversal of monocyte dysfunction.
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Affiliation(s)
- Li Yang
- Emergency Department, Beijing Shijitan Hospital, Capital Medical University, No. 10 Tieyi Road, Yangfangdian, Haidian District, Beijing, 100038, China
| | - Qian Gao
- Emergency Department, Beijing Shijitan Hospital, Capital Medical University, No. 10 Tieyi Road, Yangfangdian, Haidian District, Beijing, 100038, China
| | - Qiujing Li
- Emergency Department, Beijing Shijitan Hospital, Capital Medical University, No. 10 Tieyi Road, Yangfangdian, Haidian District, Beijing, 100038, China
| | - Shubin Guo
- Emergency Medicine Clinical Research Center, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chao-Yang Hospital, Capital Medical University, No. 8, South Road of Worker's Stadium, Chaoyang District, Beijing, 100020, China.
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Idel C, Ribbat-Idel J, VON Bernuth A, Fleckner J, Rades D, Kirfel J, Sailer V, Plötze-Martin K, Bruchhage KL, Pries R. Correlation of Intra-tumoral and Peripheral PD-1/PD-L1 Immunity in Head and Neck Cancer. Anticancer Res 2023; 43:5349-5358. [PMID: 38030173 DOI: 10.21873/anticanres.16738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND/AIM Head and neck squamous cell carcinoma (HNSCC) represents a heterogeneous malignant disease of the oral cavity, pharynx, and larynx. HNSCC cells evade the host immune system through alterations in their immunogenicity, production of immunosuppressive mediators, and induction of immunomodulatory cell types. The immune status of solid HNSCC can be considered as hot, cold, or excluded for each patient individually, based on the distribution of tumor infiltrating immune cells. In this context immunotherapies based on the blockade of checkpoint molecules programmed death 1 (PD-1) and programmed death ligand 1 (PD-L1) have significantly improved therapeutic outcomes in different cancer types. In HNSCC, intra-tumoral expression levels of PD-L1 are used for decision making in checkpoint inhibitor treatment. The significance of PD-L1 as a prognostic indicator is still controversial because both PD-1 and PD-L1 are also expressed in different types of circulating immune cells and the interaction of systemic and intra-tumoral cell-type-specific expression patterns of checkpoint molecules PD-1/PD-L1 has not yet been fully unveiled. MATERIALS AND METHODS Using immunohistochemical (IHC) staining and flow cytometry, we correlated the expression patterns of the checkpoint molecules PD1/PD-L1 in peripheral blood CD14/CD16 monocytes and CD4/CD8 T cells with intra-tumoral conditions in patients with head and neck cancer. RESULTS/CONCLUSION Our data demonstrate significant connections between systemic and intra-tumoral PD-1/PD-L1 immune patterns, both of which may serve as promising combined biomarkers for treatment decisions in patients with head and neck cancer.
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Affiliation(s)
- Christian Idel
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
| | | | | | - Jonas Fleckner
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
| | - Dirk Rades
- Department of Radiation Oncology, University of Lübeck, Lübeck, Germany
| | - Jutta Kirfel
- Department of Pathology, University of Lübeck, Lübeck, Germany
| | - Verena Sailer
- Department of Pathology, University of Lübeck, Lübeck, Germany
| | - Kirstin Plötze-Martin
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
| | - Karl-Ludwig Bruchhage
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
| | - Ralph Pries
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, University of Lübeck, Lübeck, Germany
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Barge L, Gooch M, Hendle M, Simleit E. Real world implementation of flow cytometric monocyte subset partitioning for distinguishing chronic myelomonocytic leukaemia from other causes of monocytosis. Pathology 2023; 55:827-834. [PMID: 37541805 DOI: 10.1016/j.pathol.2023.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 04/21/2023] [Accepted: 05/05/2023] [Indexed: 08/06/2023]
Abstract
Monocyte subset partitioning by flow cytometry may be a useful tool in distinguishing chronic myelomonocytic leukaemia (CMML) from other causes of monocytosis, however there has been varying success in real world implementation. Additionally, current assays require an individual tube for analysis despite significant overlap in antibodies used in routine T and NK cell analysis. The objective of this study was to validate a flow cytometry assay for the enumeration of monocyte subsets in our community-based laboratory and compare this to a hybrid panel allowing analysis of monocytes, T cells and NK cells in a single tube. Monocyte subset analysis was performed on peripheral blood samples of patients with monocytosis at the time of bone marrow biopsy or transient monocytosis in the setting of bacteraemia. Cut-offs of >94% classical and <1.13% non-classical monocytes for distinguishing CMML were assessed. Classical monocytes were significantly higher, and non-classical monocytes significantly lower in CMML compared to other causes of monocytosis. The sensitivity and specificity of >94% classical monocytes were 73% [95% confidence interval (CI) 43-90%] and 89% (95% CI 75-96%) regardless of which panel was used. Non-classical monocytes of <1.13% had a sensitivity and specificity of 82% (95% CI 52-97%) and 83% (95% CI 68-92%) with the monocyte panel and 55% (95% CI 28-78%) and 89% (95% CI 75-96%) using the hybrid panel. We have found the estimation of the classical monocyte subset to be the most robust and repeatable variation of this assay with sensitivity and specificity that is clinically useful. A hybrid panel may provide an effective approach to implementing monocyte subsets into practice.
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Affiliation(s)
- Luani Barge
- Queensland Medical Laboratories, Murarrie, Qld, Australia; University of Queensland, St Lucia, Qld, Australia.
| | - Michael Gooch
- Queensland Medical Laboratories, Murarrie, Qld, Australia
| | | | - Erin Simleit
- Queensland Medical Laboratories, Murarrie, Qld, Australia
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Ohkuma R, Fujimoto Y, Ieguchi K, Onishi N, Watanabe M, Takayanagi D, Goshima T, Horiike A, Hamada K, Ariizumi H, Hirasawa Y, Ishiguro T, Suzuki R, Iriguchi N, Tsurui T, Sasaki Y, Homma M, Yamochi T, Yoshimura K, Tsuji M, Kiuchi Y, Kobayashi S, Tsunoda T, Wada S. Monocyte subsets associated with the efficacy of anti‑PD‑1 antibody monotherapy. Oncol Lett 2023; 26:381. [PMID: 37559573 PMCID: PMC10407861 DOI: 10.3892/ol.2023.13967] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 06/26/2023] [Indexed: 08/11/2023] Open
Abstract
Immune checkpoint inhibitors (ICIs) are among the most notable advances in cancer immunotherapy; however, reliable biomarkers for the efficacy of ICIs are yet to be reported. Programmed death (PD)-ligand 1 (L1)-expressing CD14+ monocytes are associated with shorter overall survival (OS) time in patients with cancer treated with anti-PD-1 antibodies. The present study focused on the classification of monocytes into three subsets: Classical, intermediate and non-classical. A total of 44 patients with different types of cancer treated with anti-PD-1 monotherapy (pembrolizumab or nivolumab) were enrolled in the present study. The percentage of each monocyte subset was investigated, and the percentage of cells expressing PD-L1 or PD-1 within each of the three subsets was further analyzed. Higher pretreatment classical monocyte percentages were correlated with shorter OS (r=-0.32; P=0.032), whereas higher non-classical monocyte percentages were correlated with a favorable OS (r=0.39; P=0.0083). PD-L1-expressing classical monocytes accounted for a higher percentage of the total monocytes than non-classical monocytes with PD-L1 expression. In patients with non-small cell lung cancer (NSCLC), a higher percentage of PD-L1-expressing classical monocytes was correlated with shorter OS (r=-0.60; P=0.012), which is similar to the observation for the whole patient cohort. Comparatively, higher percentages of non-classical monocytes expressing PD-L1 were significantly associated with better OS, especially in patients with NSCLC (r=0.60; P=0.010). Moreover, a higher percentage of non-classical monocytes contributed to prolonged progression-free survival in patients with NSCLC (r=0.50; P=0.042), with similar results for PD-L1-expressing non-classical monocytes. The results suggested that the percentage of monocyte subsets in patients with cancer before anti-PD-1 monotherapy may predict the treatment efficacy and prognosis. Furthermore, more classical monocytes and fewer non-classical monocytes, especially those expressing PD-L1, are involved in shortening OS time, which may indicate the poor efficiency of anti-PD-1 treatment approaches.
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Affiliation(s)
- Ryotaro Ohkuma
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
- Department of Clinical Diagnostic Oncology, Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
| | - Yuki Fujimoto
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
- Department of Clinical Diagnostic Oncology, Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
- Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
| | - Katsuaki Ieguchi
- Department of Clinical Diagnostic Oncology, Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
- Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
| | - Nobuyuki Onishi
- Department of Clinical Diagnostic Oncology, Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
- Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
| | - Makoto Watanabe
- Department of Clinical Diagnostic Oncology, Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
- Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
- Division of Medical Pharmacology, Department of Pharmacology, School of Medicine, Showa University, Tokyo 142-8555, Japan
- Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
| | - Daisuke Takayanagi
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
- Department of Clinical Diagnostic Oncology, Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
- Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
| | - Tsubasa Goshima
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
- Department of Clinical Diagnostic Oncology, Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
- Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
| | - Atsushi Horiike
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Kazuyuki Hamada
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Hirotsugu Ariizumi
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Yuya Hirasawa
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Tomoyuki Ishiguro
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Risako Suzuki
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Nana Iriguchi
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Toshiaki Tsurui
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Yosuke Sasaki
- Department of Pathology, Showa University School of Medicine, Tokyo 157-8577, Japan
| | - Mayumi Homma
- Department of Pathology, Showa University School of Medicine, Tokyo 157-8577, Japan
| | - Toshiko Yamochi
- Department of Pathology, Showa University School of Medicine, Tokyo 157-8577, Japan
| | - Kiyoshi Yoshimura
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
- Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
- Department of Clinical Immuno-oncology, Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
| | - Mayumi Tsuji
- Division of Medical Pharmacology, Department of Pharmacology, School of Medicine, Showa University, Tokyo 142-8555, Japan
- Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
| | - Yuji Kiuchi
- Division of Medical Pharmacology, Department of Pharmacology, School of Medicine, Showa University, Tokyo 142-8555, Japan
- Pharmacological Research Center, Showa University, Tokyo 142-8555, Japan
| | - Shinichi Kobayashi
- Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
| | - Takuya Tsunoda
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
| | - Satoshi Wada
- Division of Medical Oncology, Department of Medicine, School of Medicine, Showa University, Tokyo 142-8555, Japan
- Department of Clinical Diagnostic Oncology, Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
- Clinical Research Institute for Clinical Pharmacology and Therapeutics, Showa University, Tokyo 157-8577, Japan
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Grandoni F, Hussen J, Signorelli F, Napolitano F, Scatà MC, De Donato I, Cappelli G, Galiero G, Grassi C, De Carlo E, Petrini S, De Matteis G, Martucciello A. Evaluation of Hematological Profiles and Monocyte Subpopulations in Water Buffalo Calves after Immunization with Two Different IBR Marker Vaccines and Subsequent Infection with Bubaline alphaherpesvirus-1. Vaccines (Basel) 2023; 11:1405. [PMID: 37766082 PMCID: PMC10537172 DOI: 10.3390/vaccines11091405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 09/29/2023] Open
Abstract
Bubaline alphaherpesvirus-1 (BuAHV-1) and Bovine alphaherpesvirus-1 (BoAHV-1) are respiratory viruses that can cause an infection known as "Infectious Bovine Rhinotracheitis" (IBR) in both water buffalo and bovine species. As the main disease control strategy, vaccination can protect animals from clinical disease through the development of specific humoral and cell-mediated immune responses. In the present study, the time-related circulatory kinetics of hematological profile and bubaline monocyte subsets have been investigated in vaccinated buffalo calves after challenge infections with BuAHV-1. Thirteen buffalo calves were selected and grouped into the VAX-1 group, which received an IBR-live-attenuated gE-/tk-deleted marker vaccine; the VAX-2 group, which received an IBR-inactivated gE-deleted marker vaccine; the CNT group, which remained an unvaccinated control. Fifty-five days after the first vaccination, the animals were infected with 5 × 105.00 TCID50/mL of wild-type BuAHV-1 strain via the intranasal route. Whole blood samples were collected at 0, 2, 4, 7, 10, 15, 30, and 63 days post-challenge (PCDs) for the analysis of hematological profiles and the enumeration of monocyte subsets via flow cytometry. The analysis of leukocyte compositions revealed that neutrophils were the main leukocyte population, with a relative increase during the acute infection. On the other hand, a general decrease in the proportion of lymphocytes was observed early in the post-infection, both for the VAX-1 and VAX-2 groups, while in the CNT group, the decrease was observed later at +30 and +63 PCDs. An overall infection-induced increase in blood total monocytes was observed in all groups. The rise was especially marked in the animals vaccinated with an IBR-live-attenuated gE-/tK-deleted marker vaccine (VAX-1 group). A multicolor flow cytometry panel was used to identify the bubaline monocyte subpopulations (classical = cM; intermediate = intM; and non-classical = ncM) and to investigate their variations during BuAHV-1 infection. Our results showed an early increase in cMs followed by a second wave of intMs. This increase was observed mainly after stimulation with live-attenuated viruses in the VAX-1 group compared with the animals vaccinated with the inactivated vaccine or the non-vaccinated animal group. In summary, the present study characterized, for the first time, the hematological profile and distribution of blood monocyte subsets in vaccinated and non-vaccinated water buffalo in response to experimental infection with BuAHV-1. Although not experimentally proven, our results support the hypothesis of a linear developmental relationship between monocyte subsets.
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Affiliation(s)
- Francesco Grandoni
- Research Centre for Animal Production and Aquaculture, Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria (CREA), 00015 Monterotondo, Italy
| | - Jamal Hussen
- Department of Microbiology, College of Veterinary Medicine, King Faisal University, Al-Ahsa 36362, Saudi Arabia
| | - Federica Signorelli
- Research Centre for Animal Production and Aquaculture, Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria (CREA), 00015 Monterotondo, Italy
| | - Francesco Napolitano
- Research Centre for Animal Production and Aquaculture, Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria (CREA), 00015 Monterotondo, Italy
| | - Maria Carmela Scatà
- Research Centre for Animal Production and Aquaculture, Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria (CREA), 00015 Monterotondo, Italy
| | - Immacolata De Donato
- National Reference Centre for Hygiene and Technologies of Water Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, 84132 Salerno, Italy
| | - Giovanna Cappelli
- National Reference Centre for Hygiene and Technologies of Water Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, 84132 Salerno, Italy
| | - Giorgio Galiero
- National Reference Centre for Hygiene and Technologies of Water Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, 84132 Salerno, Italy
| | - Carlo Grassi
- National Reference Centre for Hygiene and Technologies of Water Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, 84132 Salerno, Italy
| | - Esterina De Carlo
- National Reference Centre for Hygiene and Technologies of Water Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, 84132 Salerno, Italy
| | - Stefano Petrini
- National Reference Centre for Infectious Bovine Rhinotracheitis (IBR), Istituto Zooprofilattico Sperimentale Umbria-Marche, “Togo Rosati”, 06126 Perugia, Italy
| | - Giovanna De Matteis
- Research Centre for Animal Production and Aquaculture, Consiglio per la Ricerca in Agricoltura e l’Analisi dell’Economia Agraria (CREA), 00015 Monterotondo, Italy
| | - Alessandra Martucciello
- National Reference Centre for Hygiene and Technologies of Water Buffalo Farming and Productions, Istituto Zooprofilattico Sperimentale del Mezzogiorno, 84132 Salerno, Italy
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Williams H, Mack C, Baraz R, Marimuthu R, Naralashetty S, Li S, Medbury H. Monocyte Differentiation and Heterogeneity: Inter-Subset and Interindividual Differences. Int J Mol Sci 2023; 24:ijms24108757. [PMID: 37240103 DOI: 10.3390/ijms24108757] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/08/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
The three subsets of human monocytes, classical, intermediate, and nonclassical, show phenotypic heterogeneity, particularly in their expression of CD14 and CD16. This has enabled researchers to delve into the functions of each subset in the steady state as well as in disease. Studies have revealed that monocyte heterogeneity is multi-dimensional. In addition, that their phenotype and function differ between subsets is well established. However, it is becoming evident that heterogeneity also exists within each subset, between health and disease (current or past) states, and even between individuals. This realisation casts long shadows, impacting how we identify and classify the subsets, the functions we assign to them, and how they are examined for alterations in disease. Perhaps the most fascinating is evidence that, even in relative health, interindividual differences in monocyte subsets exist. It is proposed that the individual's microenvironment could cause long-lasting or irreversible changes to monocyte precursors that echo to monocytes and through to their derived macrophages. Here, we will discuss the types of heterogeneity recognised in monocytes, the implications of these for monocyte research, and most importantly, the relevance of this heterogeneity for health and disease.
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Affiliation(s)
- Helen Williams
- Vascular Biology Research Centre, Department of Surgery, Westmead Hospital, Westmead, NSW 2145, Australia
- Sydney Medical School, The University of Sydney, Westmead, NSW 2145, Australia
| | - Corinne Mack
- Vascular Biology Research Centre, Department of Surgery, Westmead Hospital, Westmead, NSW 2145, Australia
- Sydney Medical School, The University of Sydney, Westmead, NSW 2145, Australia
| | - Rana Baraz
- Vascular Biology Research Centre, Department of Surgery, Westmead Hospital, Westmead, NSW 2145, Australia
- Sydney Medical School, The University of Sydney, Westmead, NSW 2145, Australia
| | - Rekha Marimuthu
- Vascular Biology Research Centre, Department of Surgery, Westmead Hospital, Westmead, NSW 2145, Australia
- Sydney Medical School, The University of Sydney, Westmead, NSW 2145, Australia
| | - Sravanthi Naralashetty
- Vascular Biology Research Centre, Department of Surgery, Westmead Hospital, Westmead, NSW 2145, Australia
- Sydney Medical School, The University of Sydney, Westmead, NSW 2145, Australia
| | - Stephen Li
- Vascular Biology Research Centre, Department of Surgery, Westmead Hospital, Westmead, NSW 2145, Australia
- Chemical Pathology, NSW Health Pathology, Westmead Hospital and Institute of Clinical Pathology and Medical Research, Westmead, NSW 2145, Australia
- . Blacktown/Mt Druitt Clinical School, Blacktown Hospital, Western Sydney University, Blacktown, NSW 2148, Australia
| | - Heather Medbury
- Vascular Biology Research Centre, Department of Surgery, Westmead Hospital, Westmead, NSW 2145, Australia
- Sydney Medical School, The University of Sydney, Westmead, NSW 2145, Australia
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8
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Zhang C, Zeng S, Ji W, Li Z, Sun H, Teng T, Yu Y, Zhou X, Yang Q. Synergistic role of circulating CD14++CD16+ monocytes and fibrinogen in predicting the cardiovascular events after myocardial infarction. Clin Cardiol 2023; 46:521-528. [PMID: 36946389 DOI: 10.1002/clc.24005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 02/10/2023] [Accepted: 02/27/2023] [Indexed: 03/23/2023] Open
Abstract
BACKGROUND Monocytes and fibrinogen (FIB) play important roles in driving acute and reparative inflammatory pathways after myocardial infarction (MI). In humans, there are three subsets of monocytes, namely, CD14++CD16- (Mon1), CD14++CD16+ (Mon2), and CD14+CD16++ (Mon3). During the inflammatory response, monocyte subsets express high levels of integrin αM β2 and protease-activated receptors 1 and 3 to interact with FIB. HYPOTHESIS However, whether there is a synergistic role of FIB combined with Mon2 counts in prioritizing patients at high risk of future major adverse cardiovascular events (MACEs) after MI remains unknown. METHODS The MI patients who treated with primary percutaneous coronary intervention were enrolled. MI patients were categorized into four groups, that is, low FIB/low Mon2, low FIB/high Mon2, high FIB/low Mon2, and high FIB/high Mon2, according to cutoff values of 3.28 g/L for FIB and 32.20 cells/μL for Mon2. Kaplan-Meier survival analysis and Cox proportional hazards models were used to estimate the risk of MACEs of MI patients during a median follow-up of 2.7 years. Mediating effects of high FIB levels and MACEs associated with high monocyte subsets were calculated by mediation analysis. RESULTS High FIB/high Mon2 group had the highest risk of MACEs during a median follow-up of 2.7 years. Moreover, mediation analysis showed that a high FIB level could explain 24.9% (p < .05) of the increased risk of MACEs associated with Mon2. CONCLUSION This work provides evidence indicating the translational potential of a synergistic role of FIB combined with Mon2 in prioritizing patients at high risk of future MACEs after MI.
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Affiliation(s)
- Chong Zhang
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Shan Zeng
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Heart Center, Pingjin Hospital, Tianjin, China
| | - Wenjie Ji
- Tianjin Key Laboratory of Cardiovascular Remodeling and Target Organ Injury, Heart Center, Pingjin Hospital, Tianjin, China
| | - Zhi Li
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Haonan Sun
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Tianming Teng
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Ying Yu
- Department of Pharmacology, Tianjin Key Laboratory of Inflammatory Biology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Center for Cardiovascular Diseases, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Xin Zhou
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
| | - Qing Yang
- Department of Cardiology, Tianjin Medical University General Hospital, Tianjin, China
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Glaser K, Kern D, Speer CP, Schlegel N, Schwab M, Thome UH, Härtel C, Wright CJ. Imbalanced Inflammatory Responses in Preterm and Term Cord Blood Monocytes and Expansion of the CD14(+)CD16(+) Subset upon Toll-like Receptor Stimulation. Int J Mol Sci 2023; 24. [PMID: 36902350 DOI: 10.3390/ijms24054919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/19/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
Developmentally regulated features of innate immunity are thought to place preterm and term infants at risk of infection and inflammation-related morbidity. Underlying mechanisms are incompletely understood. Differences in monocyte function including toll-like receptor (TLR) expression and signaling have been discussed. Some studies point to generally impaired TLR signaling, others to differences in individual pathways. In the present study, we assessed mRNA and protein expression of pro- and anti-inflammatory cytokines in preterm and term cord blood (CB) monocytes compared with adult controls stimulated ex vivo with Pam3CSK4, zymosan, polyinosinic:polycytidylic acid, lipopolysaccharide, flagellin, and CpG oligonucleotide, which activate the TLR1/2, TLR2/6, TLR3, TLR4, TLR5, and TLR9 pathways, respectively. In parallel, frequencies of monocyte subsets, stimulus-driven TLR expression, and phosphorylation of TLR-associated signaling molecules were analyzed. Independent of stimulus, pro-inflammatory responses of term CB monocytes equaled adult controls. The same held true for preterm CB monocytes-except for lower IL-1β levels. In contrast, CB monocytes released lower amounts of anti-inflammatory IL-10 and IL-1ra, resulting in higher ratios of pro-inflammatory to anti-inflammatory cytokines. Phosphorylation of p65, p38, and ERK1/2 correlated with adult controls. However, stimulated CB samples stood out with higher frequencies of intermediate monocytes (CD14+CD16+). Both pro-inflammatory net effect and expansion of the intermediate subset were most pronounced upon stimulation with Pam3CSK4 (TLR1/2), zymosan (TR2/6), and lipopolysaccharide (TLR4). Our data demonstrate robust pro-inflammatory and yet attenuated anti-inflammatory responses in preterm and term CB monocytes, along with imbalanced cytokine ratios. Intermediate monocytes, a subset ascribed pro-inflammatory features, might participate in this inflammatory state.
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10
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Grandoni F, Fraboni D, Canonico B, Papa S, Buccisano F, Schuberth HJ, Hussen J. Flow Cytometric Identification and Enumeration of Monocyte Subsets in Bovine and Water Buffalo Peripheral Blood. Curr Protoc 2023; 3:e676. [PMID: 36799694 DOI: 10.1002/cpz1.676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Monocytes are innate immune system key players with pivotal roles during infection and inflammation. They migrate into tissues and differentiate into myeloid effect cells (macrophages, dendritic cells) which orchestrate inflammatory processes and are interfaces between the innate and adaptive immune responses. Their clinical relevance to health and disease of cattle (Bos taurus) and water buffalo (Bubalus bubalis), two of the most important livestock species, has been highlighted in physiologic (pregnancy) and pathologic (mastitis, metritis, and viral infections) conditions. The existence of three different monocyte subsets in cattle was established by flow cytometry (FC), as follows: classical (cM; CD14++ CD16-/low ), intermediate (intM; CD14++/+ CD16+ ), and non-classical (ncM; CD14-/low CD16++ ) monocytes. FC applications for studying the immune system of cattle and water buffalo still have significant limitations. In this article, we describe some practical approaches to overcome these limitations and, in particular, allow the identification and enumeration of cM, intM, and ncM subpopulations in cattle and buffalo peripheral blood. Indeed, we propose the new procedure lyse/wash/no-centrifugation (L/W/NC) that can be combined with the FC absolute counting procedures and can overcome specific issues of the lyse/no-wash protocols (L/NW). Finally, for the first time, we demonstrated the existence of cM, intM, and ncM monocyte subsets also in the water buffalo, showing some interesting differences with cattle, such as the bubaline cM are mainly CD14+/++ /CD16+ . These subtle differences may influence inflammatory disease regulation in, for example, mastitis and metritis. The upregulation of CD16 expression on cM may reveal different monocyte priming, leading to different functional features of macrophages/dendritic cells in tissues after infection. © 2023 Wiley Periodicals LLC. Basic Protocol: Absolute count of cM, intM, and ncM without compensation Alternate Protocol: Absolute count of cM, intM, and ncM for single laser platform Support Protocol 1: In-house monoclonal antibody labeling using a Pacific Blue™ kit Support Protocol 2: In-house monoclonal antibody labeling using an Alexa Fluor® 647 kit Support Protocol 3: Titration of fluorochrome-conjugated antibodies.
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Affiliation(s)
- Francesco Grandoni
- CREA-Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di ricerca Zootecnia e Acquacoltura (Research Center for Animal Production and Aquaculture), Monterotondo, Italy
| | | | - Barbara Canonico
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
| | - Stefano Papa
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
| | - Francesco Buccisano
- Department of Biomedicine and Prevention, Tor Vergata University, Rome, Italy
| | - Hans-Joachim Schuberth
- Institute for Immunology, University of Veterinary Medicine Foundation, Hanover, Germany
| | - Jamal Hussen
- Department of Microbiology, College of Veterinary Medicine, King Faisal University, Al-Ahsa, Saudi Arabia
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de Carvalho DC, Fonseca FAH, Izar MCDO, Silveira ALPA, Tuleta ID, do Amaral JB, Neves LM, Bachi ALL, França CN. Monocytes presenting a pro-inflammatory profile persist in patients submitted to a long-term pharmacological treatment after acute myocardial infarction. Front Physiol 2023; 13:1056466. [PMID: 36741809 PMCID: PMC9895791 DOI: 10.3389/fphys.2022.1056466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 12/29/2022] [Indexed: 01/22/2023] Open
Abstract
Introduction: Although it is broadly known that monocyte recruitment is involved in atherosclerosis development and that, in accordance with the microenvironment, these cells can be modulated into three well-known subpopulations: Classical (CD14++CD16-), intermediate (CD14++CD16+), and non-classical (CD14+CD16++), the effects of treatment with different pharmacological strategies (based on lipid-lowering and antiplatelets) after acute myocardial infarction upon the monocytes modulation and the role of the chemokine receptors CCR2, CCR5 and CX3CR1 in this context, are poorly understood. Methods: In this study, patients [n = 148, both men (n = 105, 71%) and women (n = 43, 29%)] submitted to treatment with a 2×2 factorial design, in which they received rosuvastatin 20 mg or simvastatin 40 mg plus ezetimibe 10 mg, as well as ticagrelor 90 mg or clopidogrel 75 mg were enrolled. Monocyte subsets were analyzed by flow cytometry at baseline (BL), and after one (1-M) and 6 months (6-M) of treatment. Results: Firstly, our results showed that, regardless of the treatment received, higher percentages of classical monocytes and lower of non-classical monocytes were found at the 6-M time point than BL values, whilst the percentage of intermediate monocytes was higher in all time points assessed than the other subsets. There were reductions in the CCR2 expression by non-classical and intermediate monocytes, without differences for the classical subtype. Concerning the CCR5 expression, there were reductions in the three monocyte subtypes, whereas the CX3CR1 expression increased both in intermediate and classical monocytes, without differences for non-classical monocytes. In relation to the treatment received, a higher percentage of intermediate monocytes at the 6-M time point than the values BL was observed in the group treated with simvastatin + ezetimibe + clopidogrel. No significant differences were found concerning non-classical, intermediate, and classical monocytes, for CCR2, CCR5, and CX3CR1 in the four treatment arms. Conclusion: Taken together, our results demonstrated that even under lipid-lowering and antiplatelet therapy for 6 months, the inflammatory phenotype of monocytes still persisted in the patients enrolled in this study.
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Affiliation(s)
| | | | | | | | - Izabela Dorota Tuleta
- Department of Medicine-Cardiology, Albert Einstein College of Medicine, New York, NY, United States
| | - Jônatas Bussador do Amaral
- ENT Research Laboratory, Otorhinolaryngology-Head and Neck Surgery Department, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - Lucas Melo Neves
- Post Graduation Program in Health Sciences, Santo Amaro University, Sao Paulo, Brazil
| | | | - Carolina Nunes França
- Post Graduation Program in Health Sciences, Santo Amaro University, Sao Paulo, Brazil,*Correspondence: Carolina Nunes França,
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Costa KB, Garcia BCC, Costa MLB, Pena YG, Figueiredo EAB, Ottoni MHF, Santos JD, de Oliveira Ottone V, de Oliveira DB, Rocha-Vieira E. Association between Anti-DENV IgM Serum Prevalence and CD11b Expression by Classical Monocytes in Obesity. Viruses 2023; 15:234. [PMID: 36680274 PMCID: PMC9865527 DOI: 10.3390/v15010234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
Dengue and obesity are currently highly prevalent conditions worldwide and the association between these two conditions may result in greater risk for DENV infection and disease severity. In this study the association between obesity and recent, inapparent dengue was investigated. Serum DENV IgM and NS1 were evaluated in 49 adult volunteers (15 lean and 34 individuals with obesity, according to body mass index), between September 2017 and June 2018. Adiposity, endocrine, metabolic, and immune data of the participants were also obtained. None of the study participants tested positive for the DENV NS1 antigen. DENV IgM was detected in 33.3% of the lean individuals, and in 44.1% of those with obesity; the presence of DENV IgM was not associated with body mass index (OR = 1.32, 95% CI = 0.59-2.98, p = 0.48). However, body fat index was higher in obese individuals who had recent inapparent dengue (14.7 ± 3.1 versus 12.7 ± 2.1 kg/m2, p = 0.04), as was the expression of CD11b by classical (CD14++CD16-) monocytes (1103.0 ± 311.3 versus 720.3 ± 281.1 mean fluoresce intensity). Our findings suggest an association between adiposity and recent inapparent dengue and the involvement of classical monocytes in this association.
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Affiliation(s)
- Karine Beatriz Costa
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
- Departamento de Medicina, Universidade Federal de Juiz de Fora, Governador Valadares 35010-180, MG, Brazil
- Laboratory of Exercise Biology and Immunometabolism, Centro Integrado de Pós-Graduação e Pesquisa em Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
| | - Bruna Caroline Chaves Garcia
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
- Laboratory of Exercise Biology and Immunometabolism, Centro Integrado de Pós-Graduação e Pesquisa em Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
| | - Marina Luiza Baêta Costa
- Laboratory of Exercise Biology and Immunometabolism, Centro Integrado de Pós-Graduação e Pesquisa em Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
| | - Yara Gomes Pena
- Laboratory of Exercise Biology and Immunometabolism, Centro Integrado de Pós-Graduação e Pesquisa em Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
| | - Eduardo Augusto Barbosa Figueiredo
- Laboratory of Exercise Biology and Immunometabolism, Centro Integrado de Pós-Graduação e Pesquisa em Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
| | - Marcelo Henrique Fernandes Ottoni
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
| | - Juliane Duarte Santos
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
| | - Vinícius de Oliveira Ottone
- Laboratory of Exercise Biology and Immunometabolism, Centro Integrado de Pós-Graduação e Pesquisa em Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
| | - Danilo Bretas de Oliveira
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
| | - Etel Rocha-Vieira
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
- Laboratory of Exercise Biology and Immunometabolism, Centro Integrado de Pós-Graduação e Pesquisa em Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal dos Vales do Jequitinonha e Mucuri, Diamantina 39100-000, MG, Brazil
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Ning D, Garg K, Mayer B, Schick B, Bracht H, Barth E, Weiss M, Li C, Schneider J, Schneider EM. Monocyte subtype expression patterns in septic patients with diabetes are distinct from patterns observed in obese patients. Front Med (Lausanne) 2023; 9:1026298. [PMID: 36687421 PMCID: PMC9849690 DOI: 10.3389/fmed.2022.1026298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/29/2022] [Indexed: 01/06/2023] Open
Abstract
Background Sepsis causes a high rate of mortality and long-term morbidity, associated with an imbalance of innate immunity against infections and inflammation. Obesity and diabetes increase the risk for disease severity. Monocyte dysfunction plays a major role and justify further investigations. Objective To investigate the distribution and inflammatory phenotypes in circulating monocyte subsets in patients manifesting with sepsis including septic shock with and without obesity and diabetes. Methods A total of 235 blood samples were tested from critically ill adult patients registered at the intensive care unit (ICU). The cohorts were divided into non-diabetic groups with or without obesity and diabetic groups with or without obesity, suffering from sepsis or septic shock. We determined frequencies of total monocytes and of monocyte subsets in the circulation and density expression levels of functional markers, including CD14, CD16, HLA-DR, CD33, CD163, CD206, and arginase-1 by flow cytometric analysis. Results When progressing to septic shock in non-diabetic and diabetic patients, the percentages of total monocytes among the leukocyte population and of CD33+ and CD14+ monocytes among the monocyte population were consistently down-regulated compared to non-sepsis in non-diabetic and diabetic patients, respectively. Non-diabetic sepsis patients further presented with decreased CD33 and up-regulated CD163 expression density, which was absent in diabetic patients. We subsequently addressed obesity-related changes of monocytes in non-diabetic and diabetic septic patients. Obese septic patients with diabetes were unique in displaying increased monocytic CD16 and CD163 expression. However, obese septic patients without diabetes solely presented with lower amounts of non-classical monocytes. Body mass index (BMI) dependent changes were restricted to diabetic septic patients, with a significantly higher diminution of the classical monocyte subset and concomitantly increased CD16 expression densities. Conclusion Distribution and phenotypes of monocyte subsets were differentially modulated in critically ill patients with and without metabolic disease when progressing to sepsis or septic shock. Only diabetic septic patients displayed decline of classical monocytes and increase of CD16 expression densities. Therefore, diabetes but not obesity appears to promote the inflammatory phenotype of circulating monocytes in critically ill patients.
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Affiliation(s)
- Dan Ning
- Clinic for Anaesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany
| | - Kunal Garg
- Clinic for Anaesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany
| | - Benjamin Mayer
- Faculty of Medicine, Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
| | - Benedikt Schick
- Clinic for Anaesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany
| | - Hendrik Bracht
- Clinic for Anaesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany
| | - Eberhard Barth
- Clinic for Anaesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany
| | - Manfred Weiss
- Clinic for Anaesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany
| | - Chen Li
- Clinic for Anaesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany
| | - Julian Schneider
- Clinic for Anaesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany
| | - E. Marion Schneider
- Clinic for Anaesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany,*Correspondence: E. Marion Schneider,
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Dey D, Pal S, Chakraborty BC, Baidya A, Bhadra S, Ghosh R, Banerjee S, Ahammed SKM, Chowdhury A, Datta S. Multifaceted Defects in Monocytes in Different Phases of Chronic Hepatitis B Virus Infection: Lack of Restoration after Antiviral Therapy. Microbiol Spectr 2022; 10:e0193922. [PMID: 36445121 DOI: 10.1128/spectrum.01939-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Monocytes play an important role in the control of microbial infection, but monocyte biology during chronic hepatitis B virus (HBV) infection (CHI) remains inadequately studied. We investigated the frequency, phenotype, and functions of monocyte subsets in different phases of CHI, namely, immune tolerance (IT), hepatitis B early antigen (HBeAg)-positive/HBeAg-negative chronic hepatitis B (EP-/EN-CHB, respectively), and inactive carrier (IC), identified factors responsible for their functional alterations, and determined the impact of antiviral therapy on these cells. Flow cytometric analysis indicated that HLA-DR+ CD14++ CD16- classical monocytes were significantly reduced while HLA-DR+ CD14++ CD16+ intermediate and HLA-DR+ CD14+ CD16++ nonclassical monocytes were expanded in IT and EP-/EN-CHB compared with those in IC and healthy controls (HC). In comparison to IC/HC, monocytes in IT and CHB exhibited diminished expression of Toll-like receptor 2 (TLR-2)/TLR-4/TLR-9 and cytokines interleukin-12 (IL-12)/tumor necrosis factor alpha (TNF-α)/IL-6 but produced higher levels of IL-10/transforming growth factor β (TGF-β). Further, monocytes in CHB/IT showed impaired phagocytosis and oxidative response relative to those in IC/HC. In vitro assays indicated that high titers of hepatitis B surface antigen (HBsAg) present in IT/CHB and of IL-4 in CHB triggered the functional defects in monocytes via induction of β-catenin. Additionally, monocyte-derived M1 macrophages of CHB/IT produced fewer proinflammatory and more anti-inflammatory cytokines than those of IC/HC, while in CHB/IT, the monocytes skewed the differentiation of CD4+ T cells more toward regulatory T cells and a Th2 phenotype. Moreover, monocytes in CHB and IT overexpressed chemokine receptor CCR2, which coincided with increased intrahepatic accumulation of β-catenin+ CD14+ cells. One year of tenofovir therapy failed to normalize monocyte functions or reduce serum HBsAg/IL-4 levels. Taken together, monocytes are functionally perturbed mostly in IT and EP-/EN-CHB phases. Targeting intramonocytic β-catenin or reducing HBsAg/IL-4 levels might restore monocyte function and facilitate viral clearance. IMPORTANCE Chronic HBV infection (CHI) is a major cause of end-stage liver disease for which pharmacological treatments currently available are inadequate. Chronically HBV-infected patients fail to mount an efficient immune response to the virus, impeding viral clearance and recovery from hepatitis. Monocytes represent a central part of innate immunity, but a comprehensive understanding on monocyte involvement in CHI is still lacking. We here report a multitude of defects in monocytes in chronically HBV-infected patients that include alteration in subset distribution, Toll-like receptor expression, cytokine production, phagocytic activity, oxidative response, migratory ability, polarization of monocyte-derived macrophages, and monocyte-T-cell interaction. We demonstrated that high levels of hepatitis B virus surface antigen and IL-4 potentiate these defects in monocytes via β-catenin induction while therapy with the nucleotide analog tenofovir fails to restore monocyte function. Our findings add to the continuing effort to devise new immunotherapeutic strategies that could reverse the immune defects in CHI.
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Lassalle F, Rosa M, Staels B, Van Belle E, Susen S, Dupont A. Circulating Monocyte Subsets and Transcatheter Aortic Valve Replacement. Int J Mol Sci 2022; 23:5303. [PMID: 35628113 DOI: 10.3390/ijms23105303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/02/2022] [Accepted: 05/07/2022] [Indexed: 11/17/2022] Open
Abstract
Transcatheter aortic valve replacement (TAVR), as an alternative to open heart surgery, has revolutionized the treatment of severe aortic valve stenosis (AVS), the most common valvular disorder in the elderly. AVS is now considered a form of atherosclerosis and, like the latter, partly of inflammatory origin. Patients with high-grade AVS have a highly disturbed blood flow associated with high levels of shear stress. The immediate reopening of the valve during TAVR leads to a sudden restoration of a normal blood flow hemodynamic. Despite its good prognosis for patients, TAVR remains associated with bleeding or thrombotic postprocedural complications, involving mechanisms that are still poorly understood. Many studies report the close link between blood coagulation and inflammation, termed thromboinflammation, including monocytes as a major actor. The TAVR procedure represents a unique opportunity to study the influence of shear stress on human monocytes, key mediators of inflammation and hemostasis processes. The purpose of this study was to conduct a review of the literature to provide a comprehensive overview of the impact of TAVR on monocyte phenotype and subset repartition and the association of these parameters with the clinical outcomes of patients with severe AVS who underwent TAVR.
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Haschka D, Petzer V, Burkert FR, Fritsche G, Wildner S, Bellmann-Weiler R, Tymoszuk P, Weiss G. Alterations of blood monocyte subset distribution and surface phenotype are linked to infection severity in COVID-19 inpatients. Eur J Immunol 2022; 52:1285-1296. [PMID: 35491910 PMCID: PMC9348104 DOI: 10.1002/eji.202149680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 12/13/2022]
Abstract
Severe coronavirus disease 19 (COVID‐19) manifests with systemic immediate proinflammatory innate immune activation and altered iron turnover. Iron homeostasis, differentiation, and function of myeloid leukocytes are interconnected. Therefore, we characterized the cellularity, surface marker expression, and iron transporter phenotype of neutrophils and monocyte subsets in COVID‐19 patients within 72 h from hospital admission, and analyzed how these parameters relate to infection severity. Between March and November 2020, blood leukocyte samples from hospitalized COVID‐19 patients (n = 48) and healthy individuals (n = 7) were analyzed by flow cytometry enabling comparative analysis of 40 features. Inflammation‐driven neutrophil expansion, depletion of CD16+ nonclassical monocytes, and changes in surface expression of neutrophil and monocyte CD64 and CD86 were associated with COVID‐19 severity. By unsupervised self‐organizing map clustering, four patterns of innate myeloid response were identified and linked to varying levels of systemic inflammation, altered cellular iron trafficking and the severity of disease. These alterations of the myeloid leukocyte compartment during acute COVID‐19 may be hallmarks of inefficient viral control and immune hyperactivation and may help at risk prediction and treatment optimization.
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Affiliation(s)
- David Haschka
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Verena Petzer
- Department of Internal Medicine V, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Gernot Fritsche
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Sophie Wildner
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Rosa Bellmann-Weiler
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
| | - Piotr Tymoszuk
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria.,Data Analytics As a Service Tirol, Innsbruck, Austria
| | - Guenter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Innsbruck, Austria
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Cizmecioglu A, Emsen A, Sumer S, Ergun D, Akay Cizmecioglu H, Turk Dagi H, Artac H. Reduced Monocyte Subsets, Their HLA-DR Expressions, and Relations to Acute Phase Reactants in Severe COVID-19 Cases. Viral Immunol 2022; 35:273-282. [PMID: 35196160 DOI: 10.1089/vim.2021.0196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Monocytes are one of the principal immune defense cells that encounter infectious agents. However, an essential role of monocytes has been shown in the spread of viruses throughout the human body. Considering this dilemma, this study aimed to evaluate monocyte subsets and Human Leukocyte Antigen-DR isotype (HLA-DR) expressions in clinical coronavirus disease 2019 (COVID-19) cases. This prospective, multicenter, case-control study was conducted with COVID-19 patients and healthy controls. The patient group was divided into two subgroups according to disease severity (severe and non-severe). Three monocyte subsets (classical, CL; intermediate, INT; non-classical, NC) were analyzed with flow cytometry upon the patients' hospital admission. A total of 42 patients with COVID-19 and 30 controls participated in this study. The patients' conditions were either severe (n = 23) or non-severe (n = 19). All patients' monocyte and HLA-DR expressions were decreased compared with the controls (p < 0.05). Per disease severity, all monocyte subsets were not significant with disease severity; however, the HLA-DR expressions of CL monocytes (p = 0.002) and INT monocytes (p = 0.025) were more decreased in the severe patient group. In patients with various clinical features, NC monocytes were more affected. Based on these results, NC monocytes were more decreased in acute COVID-19 cases, though related various clinics decreased all monocyte subsets in these patients. Decreased monocyte HLA expressions may be a sign of immune suppression in severe patients, even when the percentage of monocyte levels has not decreased yet.
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Affiliation(s)
- Ahmet Cizmecioglu
- Department of Internal Medicine, Selcuk University Faculty of Medicine, Konya, Turkey
| | - Ayca Emsen
- Department of Pediatric Allergy and Immunology, Selcuk University Faculty of Medicine, Konya, Turkey
| | - Sua Sumer
- Department of Infectious Disease, Selcuk University Faculty of Medicine, Konya, Turkey
| | - Dilek Ergun
- Department of Respiratory Diseases, Selcuk University Faculty of Medicine, Konya, Turkey
| | - Hilal Akay Cizmecioglu
- Department of Internal Medicine, Necmettin Erbakan University Faculty of Medicine, Konya, Turkey
| | - Hatice Turk Dagi
- Department of Clinical Microbiology, Selcuk University Faculty of Medicine, Konya, Turkey
| | - Hasibe Artac
- Department of Pediatric Allergy and Immunology, Selcuk University Faculty of Medicine, Konya, Turkey
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18
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Haider P, Hoberstorfer T, Salzmann M, Fischer MB, Speidl WS, Wojta J, Hohensinner PJ. Quantitative and Functional Assessment of the Influence of Routinely Used Cryopreservation Media on Mononuclear Leukocytes for Medical Research. Int J Mol Sci 2022; 23:ijms23031881. [PMID: 35163803 PMCID: PMC8837123 DOI: 10.3390/ijms23031881] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/03/2022] [Accepted: 02/04/2022] [Indexed: 02/04/2023] Open
Abstract
Quantitative and functional analysis of mononuclear leukocyte populations is an invaluable tool to understand the role of the immune system in the pathogenesis of a disease. Cryopreservation of mononuclear cells (MNCs) is routinely used to guarantee similar experimental conditions. Immune cells react differently to cryopreservation, and populations and functions of immune cells change during the process of freeze–thawing. To allow for a setup that preserves cell number and function optimally, we tested four different cryopreservation media. MNCs from 15 human individuals were analyzed. Before freezing and after thawing, the distribution of leukocytes was quantified by flow cytometry. Cultured cells were stimulated using lipopolysaccharide, and their immune response was quantified by flow cytometry, quantitative polymerase chain reaction (qPCR), and enzyme-linked immunosorbent assay (ELISA). Ultimately, the performance of the cryopreservation media was ranked. Cell recovery and viability were different between the media. Cryopreservation led to changes in the relative number of monocytes, T cells, B cells, and their subsets. The inflammatory response of MNCs was altered by cryopreservation, enhancing the basal production of inflammatory cytokines. Different cryopreservation media induce biases, which needs to be considered when designing a study relying on cryopreservation. Here, we provide an overview of four different cryopreservation media for choosing the optimal medium for a specific task.
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Affiliation(s)
- Patrick Haider
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria; (P.H.); (T.H.); (M.S.); (W.S.S.)
- Ludwig Boltzmann Institute for Cardiovascular Research, Medical University of Vienna, 1090 Vienna, Austria;
| | - Timothy Hoberstorfer
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria; (P.H.); (T.H.); (M.S.); (W.S.S.)
| | - Manuel Salzmann
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria; (P.H.); (T.H.); (M.S.); (W.S.S.)
| | - Michael B. Fischer
- Department of Blood Group Serology and Transfusion Medicine, Medical University of Vienna, 1090 Vienna, Austria;
| | - Walter S. Speidl
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria; (P.H.); (T.H.); (M.S.); (W.S.S.)
- Ludwig Boltzmann Institute for Cardiovascular Research, Medical University of Vienna, 1090 Vienna, Austria;
| | - Johann Wojta
- Department of Internal Medicine II, Division of Cardiology, Medical University of Vienna, 1090 Vienna, Austria; (P.H.); (T.H.); (M.S.); (W.S.S.)
- Ludwig Boltzmann Institute for Cardiovascular Research, Medical University of Vienna, 1090 Vienna, Austria;
- Core Facilities, Medical University of Vienna, 1090 Vienna, Austria
- Correspondence: ; Tel.: +43-1-40400-73500
| | - Philipp J. Hohensinner
- Ludwig Boltzmann Institute for Cardiovascular Research, Medical University of Vienna, 1090 Vienna, Austria;
- Center for Biomedical Research, Medical University of Vienna, 1090 Vienna, Austria
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19
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Kashani N, Kelland EE, Vajdi B, Anderson LM, Gilmore W, Lund BT. Immune Regulatory Cell Bias Following Alemtuzumab Treatment in Relapsing-Remitting Multiple Sclerosis. Front Immunol 2021; 12:706278. [PMID: 34777337 PMCID: PMC8581537 DOI: 10.3389/fimmu.2021.706278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 09/17/2021] [Indexed: 12/12/2022] Open
Abstract
Alemtuzumab is a highly effective treatment for relapsing-remitting multiple sclerosis. It selectively targets the CD52 antigen to induce profound lymphocyte depletion, followed by recovery of T and B cells with regulatory phenotypes. We previously showed that regulatory T cell function is restored with cellular repletion, but little is known about the functional capacity of regulatory B-cells and peripheral blood monocytes during the repletion phase. In this study (ClinicalTrials.gov ID# NCT03647722) we simultaneously analyzed the change in composition and function of both regulatory lymphocyte populations and distinct monocyte subsets in cross-sectional cohorts of MS patients prior to or 6, 12, 18, 24 or 36 months after their first course of alemtuzumab treatment. We found that the absolute number and percentage of cells with a regulatory B cell phenotype were significantly higher after treatment and were positivity correlated with regulatory T cells. In addition, B cells from treated patients secreted higher levels of IL-10 and BDNF, and inhibited the proliferation of autologous CD4+CD25- T cell targets. Though there was little change in monocytes populations overall, following the second annual course of treatment, CD14+ monocytes had a significantly increased anti-inflammatory bias in cytokine secretion patterns. These results confirmed that the immune system in alemtuzumab-treated patients is altered in favor of a regulatory milieu that involves expansion and increased functionality of multiple regulatory populations including B cells, T cells and monocytes. Here, we showed for the first time that functionally competent regulatory B cells re-appear with similar kinetics to that of regulatory T-cells, whereas the change in anti-inflammatory bias of monocytes does not occur until after the second treatment course. These findings justify future studies of all regulatory cell types following alemtuzumab treatment to reveal further insights into mechanisms of drug action, and to identify key immunological predictors of durable clinical efficacy in alemtuzumab-treated patients.
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Affiliation(s)
- Nicole Kashani
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Eve E Kelland
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Borna Vajdi
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Lauren M Anderson
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Wendy Gilmore
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Brett T Lund
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
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20
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Vinci R, Pedicino D, Bonanni A, D'Aiello A, Severino A, Pisano E, Ponzo M, Canonico F, Ciampi P, Russo G, Di Sario M, Montone RA, Trani C, Conte C, Grimaldi MC, Cribari F, Massetti M, Crea F, Liuzzo G. A Novel Monocyte Subset as a Unique Signature of Atherosclerotic Plaque Rupture. Front Cell Dev Biol 2021; 9:753223. [PMID: 34712669 PMCID: PMC8545820 DOI: 10.3389/fcell.2021.753223] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 09/03/2021] [Indexed: 12/28/2022] Open
Abstract
The evaluation of monocyte subset distribution among acute coronary syndrome (ACS) patients according to culprit coronary plaque morphology has never been explored. We evaluated whether there were significant differences in frequency of circulating monocyte subsets isolated from ACS patients according to optical coherence tomography (OCT) investigation of plaque erosion and rupture. We enrolled 74 patients with non-ST-elevation ACS (NSTE-ACS), 21 of them underwent OCT investigation of the culprit coronary plaque and local macrophage infiltration (MØI) assessment. As control, we enrolled 30 chronic coronary syndrome (CCS) patients. We assessed the frequency of monocyte subsets in the whole study population, in reliance on their CD14 and CD16 expression (classical, CM: CD14++CD16–; intermediates, IM: CD14++CD16+; non-classical, NCM: CD14+CD16++). Then, we tested the effect of lipopolysaccharide (LPS) (a CD14 ligand) on peripheral blood mononuclear cells (PBMCs) of NSTE-ACS patients, quantifying the inflammatory cytokine levels in cell-culture supernatants. Our data proved that monocyte subsets isolated from NSTE-ACS patients represent a peculiar biological signature of the pathophysiological mechanism lying beneath atherosclerotic plaque with a ruptured fibrous cap (RFC) as compared with plaque erosion. Moreover, the magnitude of LPS-mediated effects on IL-1β, IL-6, and IL-10 cytokine release in cell-culture supernatants appeared to be greater in NSTE-ACS patients with RFC. Finally, we described a fourth monocyte population never explored before in this clinical setting (pre-classical monocytes, PCM: CD14+CD16–) that was prevalent in NSTE-ACS patients as compared with CCS and, especially, in patients with RFC and culprit plaque with MØI.
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Affiliation(s)
- Ramona Vinci
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Daniela Pedicino
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy.,Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Alice Bonanni
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Alessia D'Aiello
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Anna Severino
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Eugenia Pisano
- Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Myriana Ponzo
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Francesco Canonico
- Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Pellegrino Ciampi
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Giulio Russo
- Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Marianna Di Sario
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Rocco Antonio Montone
- Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Carlo Trani
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy.,Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Cristina Conte
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Maria Chiara Grimaldi
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Francesco Cribari
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Massimo Massetti
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy.,Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Filippo Crea
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy.,Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Giovanna Liuzzo
- Department of Cardiovascular and Pneumological Sciences, Catholic University of the Sacred Heart, Rome, Italy.,Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
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21
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Abstract
Remyelination failure with aging and progression of neurodegenerative disorders contributes to axonal dysfunction, highlighting the importance of understanding the mechanisms underpinning this process to develop regenerative therapies. Central nervous system (CNS) macrophages, encompassing both resident microglia and blood monocyte-derived cells, play a crucial role in driving successful remyelination. Although there has been a focus on the critical roles of microglia in remyelination, the specific contribution of monocyte-derived macrophages is still not fully understood. Until recently, the lack of tools enabling distinction between CNS macrophage populations has hindered our understanding of monocyte influence on remyelination. Recent advances have allowed for identification and characterization of monocyte populations in health, aging and in neurodegenerative conditions like multiple sclerosis, indicating heterogeneity of monocyte subsets impacted by both intrinsic and extrinsic factors. Here, we discuss the new tools enabling distinction between macrophage populations and advancements in understanding the importance of monocytes in remyelination, and reflect on the potential for therapeutic targeting of monocytes to promote remyelination.
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Affiliation(s)
- Lindsey H Forbes
- Centre for Discovery Brain Sciences, Chancellor's Building, The University of Edinburgh, Edinburgh, UK.,UK Dementia Research Institute, The University of Edinburgh, Edinburgh, UK
| | - Veronique E Miron
- Centre for Discovery Brain Sciences, Chancellor's Building, The University of Edinburgh, Edinburgh, UK.,UK Dementia Research Institute, The University of Edinburgh, Edinburgh, UK.,Medical Research Council Centre for Reproductive Health, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh, UK
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22
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Polasky C, Steffen A, Loyal K, Lange C, Bruchhage KL, Pries R. Reconstitution of Monocyte Subsets and PD-L1 Expression but Not T Cell PD-1 Expression in Obstructive Sleep Apnea Patients upon PAP Therapy. Int J Mol Sci 2021; 22:11375. [PMID: 34768806 DOI: 10.3390/ijms222111375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/07/2021] [Accepted: 10/20/2021] [Indexed: 11/22/2022] Open
Abstract
Obstructive sleep apnea (OSA) is characterized by nocturnal breathing intermissions resulting in oxidative stress and eventually, a low-grade systemic inflammation. The study aimed to investigate the impact of positive airway pressure (PAP) therapy on the inflammatory milieu as measured by monocyte and T cell phenotypic alterations. Participants were assessed for their OSA severity before PAP therapy and about six months later, including patient-reported outcome and therapy usage by telemetry readout. The distributions of the CD14/CD16-characterized monocyte subsets as well as the CD4/CD8-characterized effector T cell subsets with regard to their PD-1 and PD-L1 expression were analyzed by flow cytometry from blood samples. Data of 25 patients revealed a significant reconstitution of the monocyte subset distribution and a decrease in PD-L1 expression on pan-monocytes and CD8+ T cells without an association to initial AHI and overweight. The PD-1 expression was still increased on T cell subsets, especially on CD4+ TH17/22 cells. We conclude that PAP therapy might have a rapid effect on the monocyte phenotype and overall PD-L1 expression levels. However, T cell immune alterations especially on TH17/22 cells persist longer, indicating an ongoing disturbance of the adaptive immune system.
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23
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Chen Y, Zhang H, Hu L, Shi H, Liu X, Jia J, Sun S, Ou Y, Luo X, Zhou G, Shen W. Pravastatin attenuates atherosclerosis after myocardial infarction by inhibiting inflammatory Ly6C high monocytosis in apolipoprotein E knockout mice. J Int Med Res 2021; 48:300060520932816. [PMID: 32662710 PMCID: PMC7361503 DOI: 10.1177/0300060520932816] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Objective To evaluate the protective effect of pravastatin on atherosclerotic development and inflammatory monocyte subset in atherosclerotic apolipoprotein E (ApoE)−/− mice after myocardial infarction (MI). Methods Male ApoE−/− mice (8 weeks old) were fed a high-fat diet for 14 weeks throughout the experiment. A MI model was produced using 18-week-old ApoE−/− mice. They were randomly divided into three groups: sham group, MI group, and MI+Pra group (40 mg/kg/day pravastatin). After 4 weeks (at the end of the study period), the mice were sacrificed and cardiac function was evaluated by echocardiography. Aortic lesion areas were evaluated using oil red O staining. Plaque macrophage in aortic sinus was analyzed by immunofluorescence staining. Flow cytometry was used to explore the proportions of monocyte subsets in the blood, spleen, and bone marrow. Results Pravastatin improved cardiac function and reduced lesion areas. It also attenuated the supply of monocytes in spleen, especially the inflammatory Ly6Chigh monocyte subset. Pravastatin also subsequently reduced macrophage accumulation in atherosclerotic lesions. Conclusions MI accelerated chronic atherosclerosis progress. Pravastatin suppressed atherosclerotic development and inhibited inflammatory monocytosis after MI in ApoE−/− mice.
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Affiliation(s)
- Yufei Chen
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Hongqi Zhang
- Department of Anatomy, Histology and Embryology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Liang Hu
- Cardiovascular Institute of Zhengzhou University, Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Haiming Shi
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiaojin Liu
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jianguo Jia
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shengjia Sun
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Yang Ou
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xinping Luo
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
| | - Guomin Zhou
- Department of Anatomy, Histology and Embryology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wei Shen
- Department of Cardiology, Huashan Hospital, Fudan University, Shanghai, China
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24
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Vallania F, Zisman L, Macaubas C, Hung SC, Rajasekaran N, Mason S, Graf J, Nakamura M, Mellins ED, Khatri P. Multicohort Analysis Identifies Monocyte Gene Signatures to Accurately Monitor Subset-Specific Changes in Human Diseases. Front Immunol 2021; 12:659255. [PMID: 34054824 PMCID: PMC8160521 DOI: 10.3389/fimmu.2021.659255] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 04/26/2021] [Indexed: 12/12/2022] Open
Abstract
Monocytes are crucial regulators of inflammation, and are characterized by three distinct subsets in humans, of which classical and non-classical are the most abundant. Different subsets carry out different functions and have been previously associated with multiple inflammatory conditions. Dissecting the contribution of different monocyte subsets to disease is currently limited by samples and cohorts, often resulting in underpowered studies and poor reproducibility. Publicly available transcriptome profiles provide an alternative source of data characterized by high statistical power and real-world heterogeneity. However, most transcriptome datasets profile bulk blood or tissue samples, requiring the use of in silico approaches to quantify changes in cell levels. Here, we integrated 853 publicly available microarray expression profiles of sorted human monocyte subsets from 45 independent studies to identify robust and parsimonious gene expression signatures, consisting of 10 genes specific to each subset. These signatures maintain their accuracy regardless of disease state in an independent cohort profiled by RNA-sequencing and are specific to their respective subset when compared to other immune cells from both myeloid and lymphoid lineages profiled across 6160 transcriptome profiles. Consequently, we show that these signatures can be used to quantify changes in monocyte subsets levels in expression profiles from patients in clinical trials. Finally, we show that proteins encoded by our signature genes can be used in cytometry-based assays to specifically sort monocyte subsets. Our results demonstrate the robustness, versatility, and utility of our computational approach and provide a framework for the discovery of new cellular markers.
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Affiliation(s)
- Francesco Vallania
- Institute for Immunity, Transplantation and Infection, School of Medicine, Stanford University, Stanford, CA, United States.,Center for Biomedical Research, Department of Medicine, School of Medicine, Stanford University, Stanford, CA, United States
| | - Liron Zisman
- Institute for Immunity, Transplantation and Infection, School of Medicine, Stanford University, Stanford, CA, United States.,Center for Biomedical Research, Department of Medicine, School of Medicine, Stanford University, Stanford, CA, United States.,Department of Pediatrics, Program in Immunology, School of Medicine, Stanford University, Stanford, CA, United States
| | - Claudia Macaubas
- Department of Pediatrics, Program in Immunology, School of Medicine, Stanford University, Stanford, CA, United States
| | - Shu-Chen Hung
- Department of Pediatrics, Program in Immunology, School of Medicine, Stanford University, Stanford, CA, United States
| | - Narendiran Rajasekaran
- Department of Pediatrics, Program in Immunology, School of Medicine, Stanford University, Stanford, CA, United States
| | - Sonia Mason
- Department of Pediatrics, Program in Immunology, School of Medicine, Stanford University, Stanford, CA, United States
| | - Jonathan Graf
- Department of Medicine, University of California San Francisco, San Francisco, CA, United States
| | - Mary Nakamura
- Department of Medicine, University of California San Francisco, San Francisco, CA, United States
| | - Elizabeth D Mellins
- Department of Pediatrics, Program in Immunology, School of Medicine, Stanford University, Stanford, CA, United States
| | - Purvesh Khatri
- Institute for Immunity, Transplantation and Infection, School of Medicine, Stanford University, Stanford, CA, United States.,Center for Biomedical Research, Department of Medicine, School of Medicine, Stanford University, Stanford, CA, United States
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25
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Geng Z, Tao Y, Zheng F, Wu L, Wang Y, Wang Y, Sun Y, Fu S, Wang W, Xie C, Zhang Y, Gong F. Altered Monocyte Subsets in Kawasaki Disease Revealed by Single-cell RNA-Sequencing. J Inflamm Res 2021; 14:885-896. [PMID: 33758528 PMCID: PMC7981157 DOI: 10.2147/jir.s293993] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/09/2021] [Indexed: 11/23/2022] Open
Abstract
Background Kawasaki disease (KD) is characterized by a disorder of immune response, and its etiology remains unknown. Monocyte is an important member of the body’s innate immune system; however its role in KD is still elusive due to its ambiguous heterogeneity and complex functions. We aim to comprehensively delineate monocyte heterogeneity in healthy and KD infants and to reveal the underlying mechanism for KD. Methods Peripheral monocytes were enriched from peripheral blood samples of two healthy infants and two KD infants. scRNA-seq was performed to acquire the transcriptomic atlas of monocytes. Bio-information analysis was utilized to identify monocyte subsets and explore their functions and differentiation states. SELL+CD14+CD16- monocytes were validated using flow cytometry. Results Three monocyte subsets were identified in healthy infants, including CD14+CD16- monocytes, CD14+CD16+ monocytes, and CD14LowCD16+ monocytes. Cell trajectory analysis revealed that the three monocyte subsets represent a linear differentiation, and possess different biological functions. Furthermore, SELL+CD14+CD16- monocytes, which were poorly differentiated and relating to neutrophil activation, were found to be expanded in KD. Conclusion Our findings provide a valuable resource for deciphering the monocyte heterogeneity in healthy infants and uncover the altered monocyte subsets in KD patients, suggesting potential biomarkers for KD diagnosis and treatment.
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Affiliation(s)
- Zhimin Geng
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Yijing Tao
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Fenglei Zheng
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Linlin Wu
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Ying Wang
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Yujia Wang
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Yameng Sun
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Songling Fu
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Wei Wang
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Chunhong Xie
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Yiying Zhang
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
| | - Fangqi Gong
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, People's Republic of China
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26
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Williams EL, Stimpson ML, Lait PJP, Schewitz-Bowers LP, Jones LV, Dhanda AD, Lee RWJ, Bradbury CA. Glucocorticoid treatment in patients with newly diagnosed immune thrombocytopenia switches CD14 ++ CD16 + intermediate monocytes from a pro-inflammatory to an anti-inflammatory phenotype. Br J Haematol 2020; 192:375-384. [PMID: 33338291 DOI: 10.1111/bjh.17205] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 12/15/2022]
Abstract
Immune thrombocytopenia (ITP) is thought to result from an aberrant adaptive autoimmune response, involving autoantibodies, B and T lymphocytes, directed at platelets and megakaryocytes. Previous reports have demonstrated skewed CD4+ T-helper subset distribution and enhanced production of pro-inflammatory cytokines such as interleukin 17A and interferon gamma. The role of monocytes (MCs) in ITP is less widely described, but innate immune cells have a role in shaping CD4+ T-cell phenotypes. Glucocorticoids (GCs) are commonly used for first-line ITP treatment and modulate a broad range of immune cells including T cells and MCs. Using multiparameter flow cytometry analysis, we demonstrate the expansion of intermediate MCs (CD14++ CD16+ ) in untreated patients with newly diagnosed ITP, with these cells displaying a pro-inflammatory phenotype, characterised by enhanced expression of CD64 and CD80. After 2 weeks of prednisolone treatment (1 mg/kg daily), the proportion of intermediate MCs reduced, with enhanced expression of the anti-inflammatory markers CD206 and CD163. Healthy control MCs were distinctly different than MCs from patients with ITP before and after GC treatment. Furthermore, the GC-induced phenotype was not observed in patients with chronic ITP receiving thrombopoietin receptor agonists. These data suggest a role of MCs in ITP pathogenesis and clinical response to GC therapy.
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Affiliation(s)
- Emily L Williams
- Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Madeleine L Stimpson
- Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Philippa J P Lait
- Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | | | - Lauren V Jones
- Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Ashwin D Dhanda
- Faculty of Health, Peninsula Institute of Health Research, University of Plymouth, Plymouth, UK.,South West Liver Unit, Derriford Hospital, University Hospitals Plymouth NHS Trust, Plymouth, UK
| | - Richard W J Lee
- Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.,University Hospitals Bristol NHS Foundation Trust, Bristol, UK.,Moorfields Eye Hospital NHS Foundation Trust, London, UK
| | - Charlotte A Bradbury
- Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.,University Hospitals Bristol NHS Foundation Trust, Bristol, UK
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27
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Chow DC, Mau M, Hodis HN, Kewcharoen J, Li Y, Siriwardhana C, Souza SA, Mitchell BI, Bowler S, SahBandar I, Gangcuangco LMA, MacPherson I, Ndhlovu LC, Shikuma CM. Short Communication: Carotid Artery Plaque Burden in HIV Is Associated with Soluble Mediators and Monocytes. AIDS Res Hum Retroviruses 2020; 36:1020-1023. [PMID: 32862657 DOI: 10.1089/aid.2020.0075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Maximum carotid plaque thickness (MCPT) measures the largest plaque thickness in the carotid artery and reflects atherosclerosis plaque burden. MCPT may be a better predictor of cardiovascular disease than carotid artery intima-media thickness (cIMT) because it identifies potential unstable arterial atherosclerosis plaques. We assessed the relationships of monocyte and T cell populations and plasma soluble mediators with MCPT measures. We performed a cross-sectional and small follow-up analysis in people living with HIV (PLWH) aged >40 years on stable antiretroviral therapy (ART) >6 months. MCPT was acquired by high-resolution B-mode ultrasound. Existing monocyte subsets and T cell activation frequencies were determined by flow cytometry and plasma mediators of inflammation and apolipoproteins were measured by Luminex assay. One hundred twenty-five ART-treated PLWH, 88% male, 55% Caucasian, with a median age of 51 years, median CD4 count of 477 cells/μL (Q1: 325, Q3: 612), 84% undetectable plasma HIV RNA (<50 copies/mL). Twenty-five PLWH had detectable carotid plaque. MCPT correlated with monocyte chemoattractant protein-1 (MCP-1; r = 0.487, p = .016), tumor necrosis factor-α (TNF-α; r = 0.474 p = .019), soluble vascular cell adhesion molecule-1 (sVCAM-1; r = 0.472, p = .020), apolipoprotein B6 (ApoB6; r = -0.473, p = .019), and interleukin-6 (IL-6; r = 0.455, p = .025). In a multivariable regression model, MCP-1, TNF-α, and sVCAM-1 remained significant after adjustment for age. Carotid plaque burden was associated with increased inflammatory, monocyte, and endothelial measures, including MCP-1, TNF-α, and sVCAM-1 levels. Further investigation on the evolution or severity of plaque burden in this population is warranted.
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Affiliation(s)
- Dominic C. Chow
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
| | - Makoa Mau
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
| | - Howard N. Hodis
- Atherosclerosis Research Unit, University of Southern California, Los Angeles, California, USA
| | - Jakrin Kewcharoen
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
| | - Yanjie Li
- Atherosclerosis Research Unit, University of Southern California, Los Angeles, California, USA
| | - Chathura Siriwardhana
- Department of Tropical Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
| | - Scott A. Souza
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
- Queen's Medical Center, Honolulu, Hawai'i, USA
| | - Brooks I. Mitchell
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
| | - Scott Bowler
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
| | - Ivo SahBandar
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
- Department of Tropical Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
- Weill Cornell Medicine, New York, New York, USA
| | - Louie Mar A. Gangcuangco
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
| | - Iain MacPherson
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
| | - Lishomwa C. Ndhlovu
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
- Department of Tropical Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
- Weill Cornell Medicine, New York, New York, USA
| | - Cecilia M. Shikuma
- Hawai'i Center for AIDS, Department of Medicine, University of Hawai'i, John A. Burns School of Medicine, Honolulu, Hawai'i, USA
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28
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Hu Y, Hu Y, Xiao Y, Wen F, Zhang S, Liang D, Su L, Deng Y, Luo J, Ou J, Lu M, Hong Y, Chi W. Genetic landscape and autoimmunity of monocytes in developing Vogt-Koyanagi-Harada disease. Proc Natl Acad Sci U S A 2020; 117:25712-21. [PMID: 32989127 DOI: 10.1073/pnas.2002476117] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Vogt-Koyanagi-Harada (VKH) disease is a systemic autoimmune disorder affecting multiple organs, including eyes, skin, and central nervous system. It is known that monocytes significantly contribute to the development of autoimmune disease. However, the subset heterogeneity with unique functions and signatures in human circulating monocytes and the identity of disease-specific monocytic populations remain largely unknown. Here, we employed an advanced single-cell RNA sequencing technology to systematically analyze 11,259 human circulating monocytes and genetically defined their subpopulations. We constructed a precise atlas of human blood monocytes, identified six subpopulations-including S100A12, HLA, CD16, proinflammatory, megakaryocyte-like, and NK-like monocyte subsets-and uncovered two previously unidentified subsets: HLA and megakaryocyte-like monocyte subsets. Relative to healthy individuals, cellular composition, gene expression signatures, and activation states were markedly alternated in VKH patients utilizing cell type-specific programs, especially the CD16 and proinflammatory monocyte subpopulations. Notably, we discovered a disease-relevant subgroup, proinflammatory monocytes, which showed a discriminative gene expression signature indicative of inflammation, antiviral activity, and pathologic activation, and converted into a pathologic activation state implicating the active inflammation during VKH disease. Additionally, we found the cell type-specific transcriptional signature of proinflammatory monocytes, ISG15, whose production might reflect the treatment response. Taken together, in this study, we present discoveries on accurate classification, molecular markers, and signaling pathways for VKH disease-associated monocytes. Therapeutically targeting this proinflammatory monocyte subpopulation would provide an attractive approach for treating VKH, as well as other autoimmune diseases.
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Krychtiuk KA, Lenz M, Richter B, Hohensinner PJ, Kastl SP, Mangold A, Huber K, Hengstenberg C, Wojta J, Heinz G, Speidl WS. Monocyte subsets predict mortality after cardiac arrest. J Leukoc Biol 2020; 109:1139-1146. [PMID: 33020969 PMCID: PMC8247267 DOI: 10.1002/jlb.5a0420-231rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 09/14/2020] [Accepted: 09/14/2020] [Indexed: 12/12/2022] Open
Abstract
After successful cardiopulmonary resuscitation (CPR), many patients show signs of an overactive immune activation. Monocytes are a heterogeneous cell population that can be distinguished into 3 subsets by flow cytometry (classical monocytes [CM: CD14++CD16‐], intermediate monocytes [IM: CD14++CD16+CCR2+] and non‐classical monocytes [NCM: CD14+CD16++CCR2‐]). Fifty‐three patients admitted to the medical intensive care unit (ICU) after cardiac arrest were included. Blood was taken on admission and after 72 h. The primary endpoint of this study was survival at 6 months and the secondary endpoint was neurological outcome as determined by cerebral performance category (CPC)‐score at 6 months. Median age was 64.5 (49.8‐74.3) years and 75.5% were male. Six‐month mortality was 50.9% and survival with good neurological outcome was 37.7%. Monocyte subset distribution upon admission to the ICU did not differ according to survival. Seventy‐two hours after admission, patients who died within 6 months showed a higher percentage of the pro‐inflammatory subset of IM (8.3% [3.8‐14.6]% vs. 4.1% [1.5–8.2]%; P = 0.025), and a lower percentage of CM (87.5% [79.9–89.0]% vs. 90.8% [85.9–92.7]%; P = 0.036) as compared to survivors. In addition, IM were predictive of outcome independent of time to ROSC and witnessed cardiac arrest, and correlated with CPC‐score at 6 months (R = 0.32; P = 0.043). These findings suggest a possible role of the innate immune system in the pathophysiology of post cardiac arrest syndrome.
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Affiliation(s)
- Konstantin A Krychtiuk
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Max Lenz
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Bernhard Richter
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Philipp J Hohensinner
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Stefan P Kastl
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Andreas Mangold
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Kurt Huber
- Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria.,3rd Medical Department, Wilhelminen Hospital, Vienna, Austria
| | - Christian Hengstenberg
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Johann Wojta
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria.,Ludwig Boltzmann Cluster for Cardiovascular Research, Vienna, Austria.,Core Facilities, Medical University of Vienna, Vienna, Austria
| | - Gottfried Heinz
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
| | - Walter S Speidl
- Division of Cardiology, Department of Internal Medicine II, Medical University of Vienna, Vienna, Austria
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30
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Gadgeel M, Bagla S, Buck S, Shamoun M, Ravindranath Y. CD14/16 monocyte profiling in juvenile myelomonocytic leukemia. Pediatr Blood Cancer 2020; 67:e28555. [PMID: 32648963 DOI: 10.1002/pbc.28555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/10/2020] [Accepted: 06/19/2020] [Indexed: 12/21/2022]
Abstract
Monocyte subset analysis by flow cytometry has been shown to be a useful diagnostic tool in chronic myelomonocytic leukemia in adults. An increase in the classical monocyte fraction (CD14++/CD16-) greater than 94.0% of total monocytes is considered highly sensitive and specific in distinguishing chronic myelomonocytic leukemia from other myeloproliferative disorders. In a pilot study of juvenile myelomonocytic leukemia cases, we noted that CD14++/CD16- monocyte fraction was >95% in de novo juvenile myelomonocytic leukemia (JMML) with somatic PTPN11 mutations but normal in those with monosomy 7 or Noonan syndrome. Monocyte subgroup profiling by itself is not diagnostic of JMML but may distinguish molecular subgroups within JMML.
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Affiliation(s)
- Manisha Gadgeel
- School of Medicine, Wayne State University, Detroit, Michigan
| | - Shruti Bagla
- School of Medicine, Wayne State University, Detroit, Michigan
| | - Steven Buck
- Division of Hematology/Oncology, Children's Hospital of Michigan, Detroit, Michigan
| | - Mark Shamoun
- Division of Hematology/Oncology, Children's Hospital of Michigan, Detroit, Michigan
| | - Yaddanapudi Ravindranath
- School of Medicine, Wayne State University, Detroit, Michigan.,Division of Hematology/Oncology, Children's Hospital of Michigan, Detroit, Michigan
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31
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Silvin A, Chapuis N, Dunsmore G, Goubet AG, Dubuisson A, Derosa L, Almire C, Hénon C, Kosmider O, Droin N, Rameau P, Catelain C, Alfaro A, Dussiau C, Friedrich C, Sourdeau E, Marin N, Szwebel TA, Cantin D, Mouthon L, Borderie D, Deloger M, Bredel D, Mouraud S, Drubay D, Andrieu M, Lhonneur AS, Saada V, Stoclin A, Willekens C, Pommeret F, Griscelli F, Ng LG, Zhang Z, Bost P, Amit I, Barlesi F, Marabelle A, Pène F, Gachot B, André F, Zitvogel L, Ginhoux F, Fontenay M, Solary E. Elevated Calprotectin and Abnormal Myeloid Cell Subsets Discriminate Severe from Mild COVID-19. Cell 2020; 182:1401-1418.e18. [PMID: 32810439 PMCID: PMC7405878 DOI: 10.1016/j.cell.2020.08.002] [Citation(s) in RCA: 552] [Impact Index Per Article: 138.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/12/2020] [Accepted: 07/31/2020] [Indexed: 12/18/2022]
Abstract
Blood myeloid cells are known to be dysregulated in coronavirus disease 2019 (COVID-19), caused by SARS-CoV-2. It is unknown whether the innate myeloid response differs with disease severity and whether markers of innate immunity discriminate high-risk patients. Thus, we performed high-dimensional flow cytometry and single-cell RNA sequencing of COVID-19 patient peripheral blood cells and detected disappearance of non-classical CD14LowCD16High monocytes, accumulation of HLA-DRLow classical monocytes (Human Leukocyte Antigen - DR isotype), and release of massive amounts of calprotectin (S100A8/S100A9) in severe cases. Immature CD10LowCD101−CXCR4+/− neutrophils with an immunosuppressive profile accumulated in the blood and lungs, suggesting emergency myelopoiesis. Finally, we show that calprotectin plasma level and a routine flow cytometry assay detecting decreased frequencies of non-classical monocytes could discriminate patients who develop a severe form of COVID-19, suggesting a predictive value that deserves prospective evaluation.
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Affiliation(s)
- Aymeric Silvin
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Nicolas Chapuis
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris 75006, France; Service d'Hématologie Biologique, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Garett Dunsmore
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | | | - Agathe Dubuisson
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Lisa Derosa
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif 94800, France; Département d'Oncologie Médicale, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Carole Almire
- Service d'Hématologie Biologique, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Clémence Hénon
- INSERM U981, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Olivier Kosmider
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris 75006, France; Service d'Hématologie Biologique, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Nathalie Droin
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif 94800, France; INSERM US23, CNRS UMS 3655, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Philippe Rameau
- INSERM US23, CNRS UMS 3655, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Cyril Catelain
- INSERM US23, CNRS UMS 3655, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Alexia Alfaro
- INSERM US23, CNRS UMS 3655, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Charles Dussiau
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris 75006, France; Service d'Hématologie Biologique, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Chloé Friedrich
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris 75006, France; Service d'Hématologie Biologique, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Elise Sourdeau
- Service des Urgences, AP-HP, Hôpital Hôtel-Dieu, Paris 75014, France
| | - Nathalie Marin
- Service de Médecine Intensive et Réanimation, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Tali-Anne Szwebel
- Service de Médecine Interne, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Delphine Cantin
- Service des Urgences, AP-HP, Hôpital Hôtel-Dieu, Paris 75014, France
| | - Luc Mouthon
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris 75006, France; Service de Médecine Interne, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Didier Borderie
- Service de Diagnostic Biologique Automatisé, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Marc Deloger
- INSERM US23, CNRS UMS 3655, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Delphine Bredel
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Severine Mouraud
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Damien Drubay
- INSERM U1018, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Muriel Andrieu
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris 75006, France
| | | | - Véronique Saada
- Département de Biologie et Pathologie, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Annabelle Stoclin
- Service de Réanimation Médicale, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Christophe Willekens
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif 94800, France; Département d'Hématologie, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Fanny Pommeret
- Département d'Oncologie Médicale, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Frank Griscelli
- Département d'Oncologie Médicale, Gustave Roussy Cancer Campus, Villejuif 94800, France; Département de Biologie et Pathologie, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Lai Guan Ng
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A(∗)STAR), 8A Biomedical Grove, Immunos Building #3-4, Biopolis, Singapore 138648, Singapore
| | - Zheng Zhang
- Institute for Hepatology, National Clinical Research Center for Infectious Disease, Shenzhen Third People's Hospital, School of Medicine, Southern University of Science and Technology, Shenzhen 518112, Guangdong Province, China
| | - Pierre Bost
- Systems Biology Group, Department of Computational Biology and USR 3756, Institut Pasteur and CNRS, Paris 75015, France; Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Ido Amit
- Department of Immunology, Weizmann Institute of Science, Rehovot, Israel
| | - Fabrice Barlesi
- Département d'Oncologie Médicale, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Aurélien Marabelle
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif 94800, France; Département d'Innovation Thérapeutique et d'Essais Précoces (DITEP), Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Frédéric Pène
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris 75006, France; Service de Médecine Intensive et Réanimation, AP-HP, Hôpital Cochin, Paris 75014, France
| | - Bertrand Gachot
- Service de Réanimation Médicale, Gustave Roussy Cancer Campus, Villejuif 94800, France
| | - Fabrice André
- Département d'Oncologie Médicale, Gustave Roussy Cancer Campus, Villejuif 94800, France; INSERM U981, Gustave Roussy Cancer Campus, Villejuif 94800, France; Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre 94270, France
| | - Laurence Zitvogel
- INSERM U1015, Gustave Roussy Cancer Campus, Villejuif 94800, France; Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre 94270, France; Centre d'Investigation Clinique - Biothérapie, INSERM CICBT1428, Villejuif 94800, France
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A(∗)STAR), 8A Biomedical Grove, Immunos Building #3-4, Biopolis, Singapore 138648, Singapore; Shanghai Institute of Immunology, Shanghai JiaoTong University School of Medicine, 280 South Chongqing Road, Shanghai 200025, China; Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore 169856, Singapore.
| | - Michaela Fontenay
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris 75006, France; Service d'Hématologie Biologique, AP-HP, Hôpital Cochin, Paris 75014, France.
| | - Eric Solary
- INSERM U1287, Gustave Roussy Cancer Campus, Villejuif 94800, France; Service de Réanimation Médicale, Gustave Roussy Cancer Campus, Villejuif 94800, France; Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre 94270, France.
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32
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da Silva TP, Bittencourt TL, de Oliveira AL, Prata RBDS, Menezes V, Ferreira H, Nery JADC, de Oliveira EB, Sperandio da Silva GM, Sarno EN, Pinheiro RO. Macrophage Polarization in Leprosy-HIV Co-infected Patients. Front Immunol 2020; 11:1493. [PMID: 32849508 PMCID: PMC7403476 DOI: 10.3389/fimmu.2020.01493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 06/08/2020] [Indexed: 11/24/2022] Open
Abstract
In HIV-infected individuals, a paradoxical clinical deterioration may occur in preexisting leprosy when highly active antiretroviral therapy (HAART)-associated reversal reaction (RR) develops. Leprosy–HIV co-infected patients during HAART may present a more severe form of the disease (RR/HIV), but the immune mechanisms related to the pathogenesis of leprosy–HIV co-infection remain unknown. Although the adaptive immune responses have been extensively studied in leprosy–HIV co-infected individuals, recent studies have described that innate immune cells may drive the overall immune responses to mycobacterial antigens. Monocytes are critical to the innate immune system and play an important role in several inflammatory conditions associated with chronic infections. In leprosy, different tissue macrophage phenotypes have been associated with the different clinical forms of the disease, but it is not clear how HIV infection modulates the phenotype of innate immune cells (monocytes or macrophages) during leprosy. In the present study, we investigated the phenotype of monocytes and macrophages in leprosy–HIV co-infected individuals, with or without RR. We did not observe differences between the monocyte profiles in the studied groups; however, analysis of gene expression within the skin lesion cells revealed that the RR/HIV group presents a higher expression of macrophage scavenger receptor 1 (MRS1), CD209 molecule (CD209), vascular endothelial growth factor (VEGF), arginase 2 (ARG2), and peroxisome proliferator-activated receptor gamma (PPARG) when compared with the RR group. Our data suggest that different phenotypes of tissue macrophages found in the skin from RR and RR/HIV patients could differentially contribute to the progression of leprosy.
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Affiliation(s)
| | | | | | | | - Vinicius Menezes
- Leprosy Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Helen Ferreira
- Leprosy Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | | | - Gilberto Marcelo Sperandio da Silva
- Chagas Disease Clinic Research Laboratory, Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Euzenir Nunes Sarno
- Leprosy Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Roberta Olmo Pinheiro
- Leprosy Laboratory, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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33
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Abstract
Monocytes are considered to play a central role in the pathogenesis of Cryptococcus neoformans infection. Monocytes and monocyte-derived macrophages and dendritic cells are key components for the control of infection, but paradoxically they can also contribute to detrimental host responses and may even support fungal proliferation and dissemination. Simultaneously, the C. neoformans polysaccharide capsule can impair the functions of monocytes. Although monocytes are often seen as simple precursor cells, they also function as independent immune effector cells. In this review, we summarize these monocyte-specific functions during cryptococcal infection and the influence of C. neoformans on monocyte responses. We also cover the most recent findings on the functional and phenotypic heterogeneity of monocytes and discuss how new advanced technologies provide a platform to address outstanding questions in the field.
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Cormican S, Griffin MD. Human Monocyte Subset Distinctions and Function: Insights From Gene Expression Analysis. Front Immunol 2020; 11:1070. [PMID: 32582174 PMCID: PMC7287163 DOI: 10.3389/fimmu.2020.01070] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 05/04/2020] [Indexed: 12/30/2022] Open
Abstract
Monocytes are a highly plastic innate immune cell population that displays significant heterogeneity within the circulation. Distinct patterns of surface marker expression have become accepted as a basis for distinguishing three monocyte subsets in humans. These phenotypic subsets, termed classical, intermediate and nonclassical, have also been demonstrated to differ in regard to their functional properties and disease associations when studied in vitro and in vivo. Nonetheless, for the intermediate monocyte subset in particular, functional experiments have yielded conflicting results and some studies point to further levels of heterogeneity. Developments in genetic sequencing technology have provided opportunities to more comprehensively explore the phenotypic and functional differences among conventionally-recognized immune cell subtypes as well as the potential to identify novel subpopulations. In this review, we summarize the transcriptomic evidence in support of the existence of three separate monocyte subsets. We also critically evaluate the insights into subset functional distinctions that have been garnered from monocyte gene expression analysis and the potential utility of such studies to unravel subset-specific functional changes which arise in disease states.
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Affiliation(s)
- Sarah Cormican
- Regenerative Medical Institute (REMEDI) at CÚRAM Centre for Research in Medical Devices, School of Medicine, College of Medicine, Nursing and Health Sciences, National University of Ireland, Galway, Ireland.,Nephrology Services, Galway University Hospitals, Saolta University Health Group, Galway, Ireland
| | - Matthew D Griffin
- Regenerative Medical Institute (REMEDI) at CÚRAM Centre for Research in Medical Devices, School of Medicine, College of Medicine, Nursing and Health Sciences, National University of Ireland, Galway, Ireland.,Nephrology Services, Galway University Hospitals, Saolta University Health Group, Galway, Ireland
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Ożańska A, Szymczak D, Rybka J. Pattern of human monocyte subpopulations in health and disease. Scand J Immunol 2020; 92:e12883. [PMID: 32243617 DOI: 10.1111/sji.12883] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 03/22/2020] [Accepted: 03/24/2020] [Indexed: 12/13/2022]
Abstract
Monocytes are important cells of the innate system. They are a heterogeneous type of cells consisting of phenotypically and functionally distinct subpopulations, which play a specific role in the control, development and escalation of the immunological processes. Based on the expression of superficial CD14 and CD16 in flow cytometry, they can be divided into three subsets: classical, intermediate and non-classical. Variation in the levels of human monocyte subsets in the blood can be observed in patients in numerous pathological states, such as infections, cardiovascular and inflammatory diseases, cancer and autoimmune diseases. The aim of this review is to summarize current knowledge of human monocyte subsets and their significance in homeostasis and in pathological conditions.
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Carstensen M, Christensen T, Stilund M, Møller HJ, Petersen EL, Petersen T. Activated monocytes and markers of inflammation in newly diagnosed multiple sclerosis. Immunol Cell Biol 2020; 98:549-562. [PMID: 32253768 PMCID: PMC7496724 DOI: 10.1111/imcb.12337] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 03/08/2020] [Accepted: 03/29/2020] [Indexed: 12/11/2022]
Abstract
In multiple sclerosis (MS), the inflammation and demyelination of the central nervous system (CNS) develop in distinct ways. This makes diagnosing patients difficult, imperative to initiating early and proper treatment. Several common features exist, among them a profound infiltration of monocytes into the CNS mediating demyelination and tissue destruction. In the periphery, monocytes are divided into three subsets depending on expression of CD14 and CD16, representing different stages of activation and differentiation. To investigate their involvement in MS, peripheral blood mononuclear cells (PBMCs) from 61 patients with incipient, untreated MS and 22 symptomatic control (SC) patients as well as 6 patients with radiologically isolated syndrome (RIS) were characterized ex vivo. In addition, paired serum and cerebrospinal fluid (CSF) samples were analyzed with a panel of biomarkers. In PBMC samples, we demonstrate decreased levels of nonclassical monocytes with a concomitant significant decrease of human endogenous retrovirus (HERV) H3 envelope epitopes on this monocyte subset compared with SC and RIS. The observed HERV expression is present on nonclassical monocytes irrespective of MS and thus presumably a result of the inflammatory activation. For the other surface markers analyzed, we found significantly decreased expression between classical and nonclassical monocytes. In matched samples of CSF a highly significant increase in levels of soluble markers of activation and inflammation is shown, and notably this is not the case for the serum samples. Of the soluble markers investigated, interleukin (IL)‐12/IL‐23p40 had the highest discriminatory power in differentiating patients with MS from SC and RIS, almost comparable to the immunoglobulin G index.
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Affiliation(s)
- Mikkel Carstensen
- Department of Biomedicine, Aarhus University, Skou Building, Høegh-Guldbergsgade 10, DK-8000, Aarhus C, Denmark
| | - Tove Christensen
- Department of Biomedicine, Aarhus University, Skou Building, Høegh-Guldbergsgade 10, DK-8000, Aarhus C, Denmark
| | - Morten Stilund
- Department of Biomedicine, Aarhus University, Skou Building, Høegh-Guldbergsgade 10, DK-8000, Aarhus C, Denmark.,Department of Neurology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 165, DK-8200, Aarhus N, Denmark
| | - Holger J Møller
- Department of Clinical Biochemistry, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, DK-8200, Aarhus N, Denmark
| | - Eva L Petersen
- Department of Biomedicine, Aarhus University, Skou Building, Høegh-Guldbergsgade 10, DK-8000, Aarhus C, Denmark
| | - Thor Petersen
- Department of Neurology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 165, DK-8200, Aarhus N, Denmark
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Zhao L, Tang Y, Lei N, Zhou D, Chen B, Gan T, Yang X, Zhang Y. Clinical features and monocyte/macrophage subsets characterization in granulomatous vs non-granulomatous Crohn's disease. Scand J Gastroenterol 2020; 55:442-448. [PMID: 32285715 DOI: 10.1080/00365521.2020.1748222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Aims: Granuloma, mainly composed of macrophages, is a histological feature of Crohn's disease (CD). However, its significance in CD has not been investigated adequately. Our study aims to address this issue by comparing the clinical manifestations and monocyte/macrophage subtypes between granulomatous and non-granulomatous CD.Materials and methods: Demographics, symptoms, endoscopic manifestations, histopathological features, and Montreal classification of patients with and without granulomas were compared. Flow cytometry was used to determine the phagocytosis and subsets of monocytes. ELISA was used to measure the plasma levels of TNF-α, IL-6, IL-1β, IL-10, CCL22, and TGF-β1. Immunohistochemistry was performed to quantify the expression of CD68, CD163 and iNOS.Results: Of the222 CD patients enrolled, granulomas were detected in 90. Compared with non-granulomatous CD patients, those with granulomas had younger age, increased rates of diarrhea and perianal complications, along with higher endoscopic score. Intestinal stenosis and crypt abscess were more frequently observed in granulomatous CD patients. A defective phagocytosis of monocytes was observed in granulomatous CD patients. Meanwhile, higher percentages of intermediate and non-classic monocytes, with a lower percentage of classic monocyte were found in them. Besides, they had higher levels of TGF-β1 and IL-10, a lower level of TNF-α, an increased ratio of CD163+/CD68+cells, and a decreased ratio of iNOS+/CD68+ cells.Conclusions: Granulomatous CD patients exhibited different manifestations compared with their non-granulomatous counterparts. More aggressive therapy may be needed in granulomatous CD patients. Furthermore, the heterogeneity of monocyte/macrophage subsets and altered plasma cytokine may underlie the difference between those two groups.
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Affiliation(s)
- Li Zhao
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Yu Tang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Na Lei
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Dandan Zhou
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Bingrun Chen
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Tao Gan
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoli Yang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Zhang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
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Hu B, Kong X, Li L, Dai F, Zhang Q, Shi R. Integrative Analyses of Genes Associated With Osteoporosis in CD16+ Monocyte. Front Endocrinol (Lausanne) 2020; 11:581878. [PMID: 33551990 PMCID: PMC7859337 DOI: 10.3389/fendo.2020.581878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 12/02/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Osteoporosis is a metabolic bone disease characterized by decreased bone mineral density and abnormal bone quality. Monocytes can secret cytokines for bone resorption, resulting in bone mass loss. However, the mechanism by which monocytes subpopulations lead to osteoporosis remains unclear. The aim of this study was to identify genes associated with osteoporosis in monocytes subsets. METHODS Three microarray datasets including GSE7158 (transcription of low/high-peak bone mass), GSE101489 (transcription of CD16+/CD16- monocyte) and GSE93883 (miRNA expression profile of primary osteoporosis) were derived from the Gene Expression Omnibus (GEO) database and analyzed with GEO2R tool to identify differentially expressed genes (DEGs). Functional enrichment was analyzed using Metascape database and GSEA software. STRING was utilized for the Protein-Protein Interaction Network construct. The hub genes were screened out using the Cytoscape software. Related miRNAs were predicted in miRWalk, miRDB, and TargetScan databases. RESULTS Total 368 DEGs from GSE7158 were screened out, which were mostly enriched in signaling, positive regulation of biological process and immune system process. The hub genes were clustered into two modules by PPI network analysis. We identified 15 overlapping DGEs between GSE101489 and GSE7158 microarray datasets. Moreover, all of them were up-regulated genes in both datasets. Then, nine key genes were screened out from above 15 overlapping DEGs using Cytoscape software. It is a remarkable fact that the nine genes were all in one hub gene module of GSE7158. Additionally, 183 target miRNAs were predicted according to the above nine DEGs. After cross-verification with miRNA express profile dataset for osteoporosis (GSE93883), 12 DEmiRNAs were selected. Finally, a miRNA-mRNA network was constructed with the nine key genes and 12 miRNAs, which were involved in osteoporosis. CONCLUSION Our analysis results constructed a gene expression framework in monocyte subsets for osteoporosis. This approach could provide a novel insight into osteoporosis.
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Affiliation(s)
- Bin Hu
- Department of Orthopedics, The Second People’s Hospital of Hefei, Hefei, China
| | - Xiangan Kong
- Department of Orthopedics, The Second People’s Hospital of Hefei, Hefei, China
| | - Li Li
- Department of Orthopedics, The Second People’s Hospital of Hefei, Hefei, China
| | - Fang Dai
- Department of Endocrinology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Qiu Zhang
- Department of Endocrinology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
- *Correspondence: Ruifeng Shi, ; Qiu Zhang,
| | - Ruifeng Shi
- Department of Endocrinology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
- *Correspondence: Ruifeng Shi, ; Qiu Zhang,
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Xiang Y, Liang B, Zhang X, Zheng F. Lower HDL-C levels are associated with higher expressions of CD16 on monocyte subsets in coronary atherosclerosis. Int J Med Sci 2020; 17:2171-2179. [PMID: 32922178 PMCID: PMC7484662 DOI: 10.7150/ijms.47998] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 07/29/2020] [Indexed: 01/17/2023] Open
Abstract
Background: Increased expressions of CD16 on classical monocytes precede their transition to intermediate monocytes. Thus far, the influence of lipids on the expression of CD14 and CD16 on monocyte subsets in coronary atherosclerosis (CA) remains unclear. The aim of this study was to investigate the underlying association between blood lipids and the expression of CD14 and CD16 on monocyte subsets. Methods: This study enrolled 112 healthy controls and 110 CA patients. Monocyte subsets [CD14++CD16- (classical), CD14++CD16+ (intermediate) and CD14+CD16++ (non-classical)] were analyzed by flow cytometry. Median fluorescent intensity (MFI) was used to evaluate the expression levels of CD14 and CD16 on monocyte subsets. Results: Compared with the control group, the expression of CD16 was significantly increased on all three monocyte subsets in the patient group. Correlation analysis revealed that serum HDL-C was inversely associated with the expression of CD16 on intermediate monocytes after Bonferroni correction in the control group. In addition, a significant decrease in classical monocytes and an increase in intermediate monocytes were detected in patients. In linear regression analysis, intermediate monocytes showed an inverse association with serum HDL-C in the control group. Although CD14 was correlated with serum TC and HDL-C, there was no statistical difference in CD14 expression between the two groups. Conclusion: Low serum HDL-C may induce upregulation of CD16 on classical monocytes, which may in turn lead to the increase of intermediate monocytes in coronary atherosclerosis patients.
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Affiliation(s)
- Yang Xiang
- Center for Gene Diagnosis, and Clinical Lab, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan 430071, China
| | - Bin Liang
- Center for Gene Diagnosis, and Clinical Lab, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan 430071, China
| | - Xiaokang Zhang
- Center for Gene Diagnosis, and Clinical Lab, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan 430071, China
| | - Fang Zheng
- Center for Gene Diagnosis, and Clinical Lab, Zhongnan Hospital of Wuhan University, Donghu Road 169, Wuhan 430071, China
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40
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Zhu J, Sourdeau E, Aubert H, Clauser S, Maillon A, Capron C, Jondeau K, Ronez E, Schillinger F, Garnache-Ottou F, Cornet E, Bardet V. A hierarchical approach in the diagnostic workflow of chronic myelomonocytic leukemia: Pivotal role of the "Mono-dysplasia-score" combined with flow cytometric quantification of monocyte subsets. Int J Lab Hematol 2019; 41:782-790. [PMID: 31647610 PMCID: PMC6916376 DOI: 10.1111/ijlh.13115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/06/2019] [Accepted: 09/13/2019] [Indexed: 12/21/2022]
Abstract
Introduction Monocytosis is a frequent trigger for blood smear review in a routine hematology laboratory whereas chronic myelomonocytic leukemia (CMML) is infrequent and arises mostly in elderly patients. In order to define the best workflow for monocytosis, we studied three diagnostic approaches: the classical morphology approach (blood smear review), the flow cytometry assay (quantification of monocyte subsets as described by Selimoglu‐Buet et al in 2015), and the “mono‐dysplasia‐score” also referred to as “Monoscore (as described by our team in 2018 using the structural parameters of the Sysmex XN™ analyzers). Methods Studying a multicentric cohort of 196 nonclonal monocytoses and CMML patients aged over 50 years, we compared the diagnostic performance of the three approaches alone and in combination to propose a diagnostic decision tree. Results In patients presenting with additional criteria for slide review to monocytosis (37% of our cohort), we propose to sequentially combine morphology, Monoscore, and flow cytometry. On the contrary, for patients with isolated monocytosis (63%), slide review is not mandatory and we suggest performing flow cytometry depending on the Monoscore value. Using the proposed algorithm, 98% of CMML patients would have been correctly identified, slide review rate drastically reduced, and flow cytometry would have been carried out in 44% of patients. Conclusion We have shown that implementation of Monoscore is a useful input filter to significantly reduce slide reviews without losing sensitivity and that flow cytometry is a performant technique in the second step of the diagnostic workup of CMML.
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Affiliation(s)
- Jaja Zhu
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Elise Sourdeau
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Honorine Aubert
- Laboratoire d'Hématologie, UNICAEN, CHU de Caen Normandie, Normandie University, Caen, France
| | - Sylvain Clauser
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Agathe Maillon
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Claude Capron
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Katayoun Jondeau
- Unité fonctionnelle d'Hématologie, Service de Médecine Interne, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Emily Ronez
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Francoise Schillinger
- Laboratoire d'Hématologie, Etablissement Français du Sang de Bourgogne/Franche-Comté, Besançon, France
| | - Francine Garnache-Ottou
- Laboratoire d'Hématologie, Etablissement Français du Sang de Bourgogne/Franche-Comté, Besançon, France
| | - Edouard Cornet
- Laboratoire d'Hématologie, UNICAEN, CHU de Caen Normandie, INSERM U1245, Normandie University, Caen, France
| | - Valérie Bardet
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
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41
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Hofer TP, van de Loosdrecht AA, Stahl-Hennig C, Cassatella MA, Ziegler-Heitbrock L. 6-Sulfo LacNAc (Slan) as a Marker for Non-classical Monocytes. Front Immunol 2019; 10:2052. [PMID: 31572354 PMCID: PMC6753898 DOI: 10.3389/fimmu.2019.02052] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/14/2019] [Indexed: 12/20/2022] Open
Abstract
Monocytes are subdivided into three subsets, which have different phenotypic and functional characteristics and different roles in inflammation and malignancy. When in man CD14 and CD16 monoclonal antibodies are used to define these subsets, then the distinction of non-classical CD14low and intermediate CD14high monocytes requires setting a gate in what is a gradually changing level of CD14 expression. In the search for an additional marker to better dissect the two subsets we have explored the marker 6-sulfo LacNAc (slan). Slan is a carbohydrate residue originally described to be expressed on the cell surface of a type of dendritic cell in human blood. We elaborate herein that the features of slan+ cells are congruent with the features of CD16+ non-classical monocytes and that slan is a candidate marker for definition of non-classical monocytes. The use of this marker may help in studying the role of non-classical monocytes in health and in diagnosis and monitoring of disease.
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Affiliation(s)
- Thomas P Hofer
- Immunoanalytics Core Facility and RG Tissue Control of Immunocytes, Helmholtz Centre Munich, Munich, Germany
| | | | | | - Marco A Cassatella
- Section of General Pathology, Department of Medicine, University of Verona, Verona, Italy
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42
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Ong SM, Teng K, Newell E, Chen H, Chen J, Loy T, Yeo TW, Fink K, Wong SC. A Novel, Five-Marker Alternative to CD16-CD14 Gating to Identify the Three Human Monocyte Subsets. Front Immunol 2019; 10:1761. [PMID: 31402918 PMCID: PMC6676221 DOI: 10.3389/fimmu.2019.01761] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 07/11/2019] [Indexed: 11/18/2022] Open
Abstract
Human primary monocytes are heterogeneous in terms of phenotype and function, but are sub-divided only based on CD16 and CD14 expression. CD16 expression distinguishes a subset of monocytes with highly pro-inflammatory properties from non-CD16 expressing “classical” monocytes. CD14 expression further subdivides the CD16+ monocytes into non-classical CD14low and intermediate CD14high subsets. This long-standing CD16–CD14 classification system, however, has limitations as CD14 is expressed in a continuum, leading to subjectivity in delineating the non-classical and intermediate subsets; in addition, CD16 expression is unstable, making identification of the subsets impossible after in vitro culture or during inflammatory conditions in vivo. Hence, we aimed to identify the three monocyte subsets using an alternative combination of markers. Additionally, we wanted to address whether the monocyte subset perturbations observed during infection is real or an artifact of differential CD16 and/or CD14 regulation. Using cytometry by time-of-flight (CyTOF), we studied the simultaneous expression of 34 monocyte markers on total monocytes, and derived a combination of five markers (CD33, CD86, CD64, HLA-DR, and CCR2), that could objectively delineate the three subsets. Using these markers, we could also distinguish CD16+ monocytes from CD16− monocytes after in vitro stimulation. Finally, we found that the observed expansion of intermediate (CD14high) monocytes in dengue virus-infected patients was due to up-regulated CD16 expression on classical monocytes. With our new combination of markers, we can now identify monocyte subsets without CD16 and CD14, and accurately re-examine monocyte subset perturbations in diseases.
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Affiliation(s)
- Siew-Min Ong
- Singapore Immunology Network (SIgN), ASTAR Research Entities, Singapore, Singapore
| | - Karen Teng
- Singapore Immunology Network (SIgN), ASTAR Research Entities, Singapore, Singapore
| | - Evan Newell
- Singapore Immunology Network (SIgN), ASTAR Research Entities, Singapore, Singapore
| | - Hao Chen
- Singapore Immunology Network (SIgN), ASTAR Research Entities, Singapore, Singapore
| | - Jinmiao Chen
- Singapore Immunology Network (SIgN), ASTAR Research Entities, Singapore, Singapore
| | - Thomas Loy
- Singapore Immunology Network (SIgN), ASTAR Research Entities, Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Tsin-Wen Yeo
- National Centre for Infectious Diseases, Singapore, Singapore.,Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Katja Fink
- Singapore Immunology Network (SIgN), ASTAR Research Entities, Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Siew-Cheng Wong
- Singapore Immunology Network (SIgN), ASTAR Research Entities, Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
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43
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Abstract
Classical and non-classical monocytes, and the macrophages and monocyte-derived dendritic cells they produce, play key roles in host defense against pathogens, immune regulation, tissue repair and many other processes throughout the body. Recent studies have revealed previously unappreciated heterogeneity among monocytes that may explain this functional diversity, but our understanding of mechanisms controlling the functional programming of distinct monocyte subsets remains incomplete. Resolving monocyte heterogeneity and understanding how their functional identity is determined holds great promise for therapeutic immune modulation. In this review, we examine how monocyte origins and developmental influences shape the phenotypic and functional characteristics of monocyte subsets during homeostasis and in the context of infection, inflammation, and cancer. We consider how extrinsic signals and transcriptional regulators impact monocyte production and functional programming, as well as the influence of epigenetic and metabolic mechanisms. We also examine the evidence that functionally distinct monocyte subsets are produced via different developmental pathways during homeostasis and that inflammatory stimuli differentially target progenitors during an emergency response. We highlight the need for a more comprehensive understanding of the relationship between monocyte ontogeny and heterogeneity, including multiparametric single-cell profiling and functional analyses. Studies defining mechanisms of monocyte subset production and maintenance of unique monocyte identities have the potential to facilitate the design of therapeutic interventions to target specific monocyte subsets in a variety of disease contexts, including infectious and inflammatory diseases, cancer, and aging.
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Affiliation(s)
- Anja A Wolf
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States.,Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Alberto Yáñez
- Departament de Microbiologia i Ecologia, Universitat de València, Burjassot, Spain.,Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina, Universitat de València, Burjassot, Spain
| | - Pijus K Barman
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States.,Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Helen S Goodridge
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States.,Research Division of Immunology, Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, United States
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Abstract
Toxoplasma gondii is a prevalent parasite of mammals and birds including up to 30% of humans world-wide. Primary infection of immunocompetent hosts leads to a robust cell-mediated immune response, which controls but does not clear the infection, thus enabling long-term parasite persistence in brain and muscle tissues. Chronic toxoplasmosis in mice is associated with resistance to heterologous pathogens and this has been related to increased numbers of inflammatory monocytes. Here we have analyzed whether chronic T. gondii infection impacts the subset distribution and the phenotype of peripheral human monocytes in vivo and their responses to parasite infection in vitro. CD14+ monocytes from T. gondii-seropositive blood donors expressed significantly less FcγRIII (CD16) than those from seronegative controls, but they did not show a shift in the distribution of classical, intermediate and non-classical monocyte subpopulations. Percentages of CD62L+ and CD64+ monocytes were however decreased and increased, respectively, in chronically infected individuals as compared to naïve controls. Infection of monocyte-enriched PBMCs from both seropositive and seronegative individuals with T. gondii led to an increase of CD14+CD16− classical monocytes and a decrease of CD14+CD16+ double positive monocytes. Remarkably, after in vitro parasite infection, expression of the chemokine receptor CCR2 was severely impaired in monocytes from both, individuals with chronic toxoplasmosis and seronegative controls. In contrast, only monocytes from chronically infected humans but not those from controls dose-dependently up-regulated HLA-DR, DP, DQ expression following in vitro infection. Furthermore, monocyte-enriched PBMCs from seropositive individuals up-regulated IL-12 mRNA more vigorously after in vitro infection than cells from naïve controls. Collectively, our results establish that infection of humans with T. gondii exerts long-term effects on the phenotype and responsiveness of blood monocytes. This may have important implications for innate immune responses to T. gondii and unrelated pathogens.
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Affiliation(s)
- Hauke G Ehmen
- Institute for Medical Microbiology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany
| | - Carsten G K Lüder
- Institute for Medical Microbiology, University Medical Center Goettingen, Georg-August-University, Goettingen, Germany
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Alahakoon TI, Medbury H, Williams H, Fewings N, Wang XM, Lee VW. Characterization of fetal monocytes in preeclampsia and fetal growth restriction. J Perinat Med 2019; 47:434-438. [PMID: 30822277 DOI: 10.1515/jpm-2018-0286] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 01/16/2019] [Indexed: 01/09/2023]
Abstract
Background There is little available data on fetal monocyte phenotype and function. A prospective cross-sectional pilot study was conducted to describe the cord blood monocyte subset phenotype in preeclampsia (PE) and fetal growth restriction (FGR) as compared to normal pregnancy and maternal circulation. Methods Maternal and cord blood samples from 27 pregnancies were collected at delivery from normal pregnancy, PE, FGR and PE+FGR. The distribution of fetal monocyte subtypes was characterized by CD14 and CD16 expression using flow cytometry and compared for each clinical group using a classification of classical, intermediate and non-classical subsets. Results The intermediate monocytes were the dominant monocyte subset in the cord blood of PE and PE+FGR with an increase in the combined inflammatory monocyte subsets intermediate and non-classical in PE compared to normal pregnancy. The non-classical monocyte subset proportion was elevated in all pathological groups PE, FGR and PE+FGR. A significant reduction in the non-classical monocyte subset was observed in the cord blood of the normal pregnancy group as compared to the maternal circulation. Conclusion This study describes for the first time in the fetal circulation, dominant monocyte intermediate subsets and increased inflammatory subsets in PE as well as increased non-classical subsets in PE and FGR compared to normal pregnancy.
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Affiliation(s)
- Thushari I Alahakoon
- Department of Maternal Fetal Medicine, Westmead Institute of Maternal and Fetal Medicine, Westmead Hospital, Hawkesbury Road,Sydney, NSW, 2145, Australia.,Department of Maternal Fetal Medicine, University of Sydney, Sydney Medical School, Sydney, NSW, Australia, Tel.: +61288904852, Fax: +61288904839, Mobile: +61 414600175
| | - Heather Medbury
- University of Sydney, Sydney Medical School, Sydney, NSW, Australia.,Department of Surgery, Westmead Hospital, Westmead, NSW, Australia
| | - Helen Williams
- University of Sydney, Sydney Medical School, Sydney, NSW, Australia.,Department of Surgery, Westmead Hospital, Westmead, NSW, Australia
| | - Nicole Fewings
- University of Sydney, Sydney Medical School, Sydney, NSW, Australia.,Department of Immunology, Westmead Hospital, Westmead, NSW, Australia
| | - Xin M Wang
- University of Sydney, Sydney Medical School, Sydney, NSW, Australia.,Scientific Platforms, Westmead Institute for Medical Research, Westmead, NSW, Australia
| | - Vincent W Lee
- University of Sydney, Sydney Medical School, Sydney, NSW, Australia.,Department of Renal Medicine, Westmead Hospital, Westmead, NSW, Australia
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Ruiz-Limon P, Ortega-Castro R, Barbarroja N, Perez-Sanchez C, Jamin C, Patiño-Trives AM, Luque-Tevar M, Ibáñez-Costa A, Perez-Sanchez L, de la Rosa IA, Abalos-Aguilera M, Jimenez-Gomez Y, Calvo-Gutierrez J, Font P, Escudero-Contreras A, Alarcon-Riquelme ME, Collantes-Estevez E, López-Pedrera C. Molecular Characterization of Monocyte Subsets Reveals Specific and Distinctive Molecular Signatures Associated With Cardiovascular Disease in Rheumatoid Arthritis. Front Immunol 2019; 10:1111. [PMID: 31169830 PMCID: PMC6536567 DOI: 10.3389/fimmu.2019.01111] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 05/01/2019] [Indexed: 12/21/2022] Open
Abstract
Objectives: This study, developed within the Innovative Medicines Initiative Joint Undertaking project PRECISESADS framework, aimed at functionally characterize the monocyte subsets in RA patients, and analyze their involvement in the increased CV risk associated with RA. Methods: The frequencies of monocyte subpopulations in the peripheral blood of 140 RA patients and 145 healthy donors (HDs) included in the PRECISESADS study were determined by flow cytometry. A second cohort of 50 RA patients and 30 HDs was included, of which CD14+ and CD16+ monocyte subpopulations were isolated using immuno-magnetic selection. Their transcriptomic profiles (mRNA and microRNA), proinflammatory patterns and activated pathways were evaluated and related to clinical features and CV risk. Mechanistic in vitro analyses were further performed. Results: CD14++CD16+ intermediate monocytes were extended in both cohorts of RA patients. Their increased frequency was associated with the positivity for autoantibodies, disease duration, inflammation, endothelial dysfunction and the presence of atheroma plaques, as well as with the CV risk score. CD14+ and CD16+ monocyte subsets showed distinctive and specific mRNA and microRNA profiles, along with specific intracellular signaling activation, indicating different functionalities. Moreover, that specific molecular profiles were interrelated and associated to atherosclerosis development and increased CV risk in RA patients. In vitro, RA serum promoted differentiation of CD14+CD16− to CD14++CD16+ monocytes. Co-culture with RA-isolated monocyte subsets induced differential activation of endothelial cells. Conclusions: Our overall data suggest that the generation of inflammatory monocytes is associated to the autoimmune/inflammatory response that mediates RA. These monocyte subsets, -which display specific and distinctive molecular signatures- might promote endothelial dysfunction and in turn, the progression of atherosclerosis through a finely regulated process driving CVD development in RA.
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Affiliation(s)
- Patricia Ruiz-Limon
- Biomedical Research Institute (IBIMA), Service of Endocrinology and Nutrition, Malaga Hospital Complex (Virgen de la Victoria), Malaga, Spain
| | - Rafaela Ortega-Castro
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Nuria Barbarroja
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain.,CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Carlos Perez-Sanchez
- Department of Medicine, School of Clinical Medicine, Addenbroke's Hospital, and Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Christophe Jamin
- U1227, Université de Brest, Inserm, Labex IGO, CHU de Brest, Brest, France
| | - Alejandra Maria Patiño-Trives
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Maria Luque-Tevar
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Alejandro Ibáñez-Costa
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Laura Perez-Sanchez
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Iván Arias de la Rosa
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - MaCarmen Abalos-Aguilera
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Yolanda Jimenez-Gomez
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Jerusalem Calvo-Gutierrez
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Pilar Font
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Alejandro Escudero-Contreras
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Marta E Alarcon-Riquelme
- Medical Genomics, Center for Genomics and Oncology Research: Pfizer, Andalusian Autonomous Government of Genomics and Oncological Research (GENYO), and University of Granada, Granada, Spain
| | - Eduardo Collantes-Estevez
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
| | - Chary López-Pedrera
- Rheumatology Service, Reina Sofia Hospital, Maimonides Institute for Research in Biomedicine of Cordoba (IMIBIC), University of Cordoba, Cordoba, Spain
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Guo N, Liu L, Yang X, Song T, Li G, Li L, Jiang T, Gao Y, Zhang T, Su B, Wu H. Immunological Changes in Monocyte Subsets and Their Association With Foxp3 + Regulatory T Cells in HIV-1-Infected Individuals With Syphilis: A Brief Research Report. Front Immunol 2019; 10:714. [PMID: 31024549 PMCID: PMC6465566 DOI: 10.3389/fimmu.2019.00714] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 03/18/2019] [Indexed: 12/11/2022] Open
Abstract
The incidence of syphilis has increased dramatically in men who have sex with men (MSM), especially those with HIV-1 infection. Treponema pallidum and HIV-1 are bidirectionally synergistic, accelerating disease progression reciprocally in co-infected individuals. We have shown that monocytes have different effects on T helper cells at different stages of HIV-1 infection. However, the immunological changes in the three monocyte subsets and in regulatory T cells (Tregs), and the associations between these cell types during syphilis infection among HIV-1-infected MSM remain unclear. Herein, we used cell staining methods to explore changes in monocyte subsets and Tregs and any associations between these cells. We found that the frequency of classical monocytes was higher in the rapid plasma reagin (RPR+) group than in the healthy controls (HCs) and the chronic HIV-1 infection (CHI) plus RPR+ (CHI&RPR+) group. The frequencies of Foxp3+CD25+CD45RA+ and Foxp3+Helios+CD45RA+ Tregs were significantly higher in the RPR+, CHI, and CHI&RPR+ groups than in HCs, whereas the frequency of CD45RA+ Tregs was lower in the CHI&RPR+ group than in CHI group. The frequencies of Foxp3+CD25+CD45RO+ and Foxp3+Helios+CD45RO+ Tregs were lower in the RPR+, CHI, and CHI&RPR+ groups than in HCs. The frequency of intermediate monocytes was inversely correlated with the frequency of CD45RA+ Tregs and positively correlated with the frequency of CD45RO+ Tregs. These results demonstrate for the first time that intermediate monocytes control the differentiation of Treg subsets in Treponema pallidum/HIV-1 co-infections. These findings provide new insights into an immunological mechanism involving monocytes/Tregs in HIV-infected individuals with syphilis.
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Affiliation(s)
- Na Guo
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Lifeng Liu
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Xiaodong Yang
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Ting Song
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Guanxin Li
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Li Li
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Taiyi Jiang
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Yanqing Gao
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Tong Zhang
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Bin Su
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
| | - Hao Wu
- Center for Infectious Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China.,Beijing Key Laboratory for HIV/AIDS Research, Beijing, China
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Abstract
AIMS There are limited data on the role of human monocyte subsets in ST-elevation myocardial infarction (STEMI). The study aimed to establish the relationship between monocyte subsets, their phagocytic and nuclear factor κB (NFκB) activity and outcomes in STEMI. METHODS Monocyte subsets and their phagocytic activity and intracellular levels of inhibitory κB kinase β (IKKβ, marker of NFκB activity) were measured by flow cytometry in 245 patients with STEMI, median follow-up of 46 months. RESULTS Mon2 (CD14++CD16+CCR2+) counts were independently predictive of major adverse cardiovascular events (MACE) [4th quartile HR 3.42 (95% CI 1.43-8.16), P = 0.006 and 3rd quartile HR 2.88 (95% CI 1.19-7.00), P = 0.02 vs. 1st quartile]. Mon2 subset was the only subset associated with higher occurrence of heart failure (4th quartile vs. 1st quartile, sevenfold, P = 0.001 on univariate analysis; fivefold, P = 0.04 on multivariable analysis). On receiver operating characteristic, analysis including of Mon2 improved prognostic value of troponin T and creatine kinase for MACE and heart failure (HF). Higher intracellular Mon2 IKKβ levels were associated with 10-fold lower occurrence of HF on multivariable analysis (4th vs. 1st quartiles, P = 0.03). Abnormal Mon1 and Mon2 phagocytic capacities were related to HF development, but the association was dependent on the infarct size and other prognosticators. High Mon2 levels were associated with lower ejection fraction after STEMI onset (P = 0.001) and at 6-month follow-up (P < 0.001). CONCLUSIONS Abnormal Mon2 characteristics have a unique association with poor outcome in patients with STEMI. The relation of Mon2 with occurrence of HF is strongly and independently related to their functional status, which may have potential therapeutic implications.
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Affiliation(s)
- E Shantsila
- University of Birmingham Centre for Cardiovascular Sciences, City Hospital, Birmingham, UK
| | - A Ghattas
- School of Life and Health Sciences, Aston University, Birmingham, UK
| | - H R Griffiths
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
| | - G Y H Lip
- Institute of Cardiovascular Science, University of Birmingham, Liverpool, UK.,Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Aalborg Thrombosis Research Unit, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
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49
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Teer E, Joseph DE, Driescher N, Nell TA, Dominick L, Midgley N, Deshpande G, Page MJ, Pretorius E, Woudberg NJ, Lecour S, Glashoff RH, Essop MF. HIV and cardiovascular diseases risk: exploring the interplay between T-cell activation, coagulation, monocyte subsets, and lipid subclass alterations. Am J Physiol Heart Circ Physiol 2019; 316:H1146-H1157. [PMID: 30768357 DOI: 10.1152/ajpheart.00797.2018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Although rollout of combined antiretroviral treatment (cART) has blunted human immunodeficiency virus (HIV) and acquired immunodeficiency syndrome (AIDS) onset, there is increased development of cardiovascular diseases (CVDs) in HIV-infected individuals. While most HIV-infected individuals on cART achieve viral suppression, this may not necessarily result in complete immunological recovery. This study therefore evaluated T-cell-mediated changes and coagulation markers in HIV-positive individuals to ascertain their potential to increase CVD risk. Eighty participants were recruited (Worcester, South Africa), and fasted blood was collected to evaluate: 1) immune activation (CD38 expression on CD4+ and CD8+ T cells) and thrombus formation [tissue factor (CD142)] on CD4+ and CD8+ T cells; 2) monocyte subpopulations (nonclassical, intermediate, and classical); and 3) classical regulatory T (Treg) cells with activation markers [glycoprotein A repetitions predominant (GARP) and special AT-rich sequence-binding protein 1 (SATB-1)]. High- and low-density lipoprotein subclasses (Lipoprint) were also determined. This study revealed four key findings for HIV-positive patients: 1) coexpression of the CD142 coagulation marker together with immune activation on both CD4+ and CD8+ T cells during chronic infection stages; 2) Treg cell activation and upregulated GARP and SATB-1 contributing to Treg dysfunction in chronic HIV; 3) proatherogenic monocyte subset expansion with significant correlation between T-cell activation and macrophage activation (marker: CD163); and 4) significant correlation between immune activation and lipid subclasses, revealing crucial changes that can be missed by traditional lipid marker assessments (LDL and HDL). These data also implicate lipopolysaccharide-binding protein as a crucial link between immune activation, lipid alterations, and increased CVD risk. NEW & NOTEWORTHY With combined antiretroviral treatment rollout, HIV-AIDS patients are increasingly associated with cardiovascular diseases onset. This study demonstrated the significant interplay between adaptive immune cell activation and monocyte/macrophage markers in especially HIV-positive individuals with virological failure and on second line treatment. Our data also show a unique link between immune activation and lipid subclass alterations, revealing important changes that can be missed by traditional lipid marker assessments (e.g., LDL and HDL).
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Affiliation(s)
- Eman Teer
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
| | - Danzil E Joseph
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
| | - Natasha Driescher
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
| | - Theo A Nell
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
| | - Leanne Dominick
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
| | - Natasha Midgley
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
| | - Gaurang Deshpande
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
| | - Martin J Page
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
| | - Etheresia Pretorius
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
| | - Nicholas J Woudberg
- Hatter Institute for Cardiovascular Research in Africa, Department of Medicine, University of Cape Town , Cape Town , South Africa
| | - Sandrine Lecour
- Hatter Institute for Cardiovascular Research in Africa, Department of Medicine, University of Cape Town , Cape Town , South Africa
| | - Richard H Glashoff
- Division of Medical Microbiology and Immunology, Department of Pathology, Stellenbosch University and National Health Laboratory Service , Cape Town , South Africa
| | - M Faadiel Essop
- Cardio-Metabolic Research Group, Department of Physiological Sciences, Stellenbosch University , Stellenbosch , South Africa
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Hao X, Han J, Zeng H, Wang H, Li G, Jiang C, Xing Z, Hao Y, Yang F, Hou X. The effect of methylprednisolone prophylaxis on inflammatory monocyte subsets and suppressive regulatory T cells of patients undergoing cardiopulmonary bypass. Perfusion 2019; 34:364-374. [PMID: 30624149 DOI: 10.1177/0267659118820777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Cardiopulmonary bypass (CPB) during open-heart surgery triggers an inflammatory response that can cause significant morbidity and mortality. Human monocytes and regulatory T (Treg) cells are phenotypically and functionally heterogeneous and have been shown to play a significant role in the inflammatory dysfunction triggered by CPB. Glucocorticoids (GCs) have been widely administered for decades in patients undergoing CPB to reduce this inflammatory response. However, it has not been clearly established how routine prophylactic administration of glucocorticoids (GCs) affects monocyte and Treg subsets. METHODS Thirty-six patient who underwent heart surgery with CPB were randomly assigned to a methylprednisolone group (MG, N = 18; 500 mg in the CPB priming) and a non-methylprednisolone group (NMG, N = 18). The circulating monocyte and Treg subsets were analyzed by flow cytometry. RESULTS The MG and NMG groups had comparable percentages of monocyte subsets and similar expression levels of HLA-DR, CD86, CD64 and toll-like receptor 4 (TLR4). Remarkably, methylprednisolone increased the percentage of CD4+CD25+ Treg cells among CD4+ T cells in patients undergoing CPB, but did not increase the proportion of suppressive Treg cells, either resting or activated, in these patients undergoing CPB. CONCLUSIONS Our results showed that prophylactic administration of methylprednisolone neither decreased the percentages and counts of inflammatory monocyte subsets nor did it induce the expansion of suppressive Treg cells in patients undergoing CPB. These results clarified the effects of GCs on cell-mediated immune responses and provided additional evidence in practice. TRIAL REGISTRATION Clinicaltrials.gov : NCT01296074. Registered 14 February 2011.
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Affiliation(s)
- Xing Hao
- 1 Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Junyan Han
- 2 Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,3 Beijing Key Laboratory of Emerging Infectious Diseases, Beijing, China
| | - Hui Zeng
- 2 Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,3 Beijing Key Laboratory of Emerging Infectious Diseases, Beijing, China
| | - Hong Wang
- 1 Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Guoli Li
- 2 Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,3 Beijing Key Laboratory of Emerging Infectious Diseases, Beijing, China
| | - Chunjing Jiang
- 1 Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Zhichen Xing
- 1 Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Yu Hao
- 2 Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.,3 Beijing Key Laboratory of Emerging Infectious Diseases, Beijing, China
| | - Feng Yang
- 1 Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xiaotong Hou
- 1 Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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