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Krejčová G, Ruphuy G, Šalamúnová P, Sonntag E, Štěpánek F, Bajgar A. Inhibition of mevalonate pathway by macrophage-specific delivery of atorvastatin prevents their pro-inflammatory polarisation. INSECT MOLECULAR BIOLOGY 2024; 33:323-337. [PMID: 38367277 DOI: 10.1111/imb.12900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 01/30/2024] [Indexed: 02/19/2024]
Abstract
Adjustment of the cellular metabolism of pro-inflammatory macrophages is essential for their bactericidal function; however, it underlies the development of many human diseases if induced chronically. Therefore, intervention of macrophage metabolic polarisation has been recognised as a potent strategy for their treatment. Although many small-molecule inhibitors affecting macrophage metabolism have been identified, their in vivo administration requires a tool for macrophage-specific delivery to limit their potential side effects. Here, we establish Drosophila melanogaster as a simple experimental model for in vivo testing of macrophage-specific delivery tools. We found that yeast-derived glucan particles (GPs) are suitable for macrophage-specific delivery of small-molecule inhibitors. Systemic administration of GPs loaded with atorvastatin, the inhibitor of hydroxy-methyl-glutaryl-CoA reductase (Hmgcr), leads to intervention of mevalonate pathway specifically in macrophages, without affecting HMGCR activity in other tissues. Using this tool, we demonstrate that mevalonate pathway is essential for macrophage pro-inflammatory polarisation and individual's survival of infection.
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Affiliation(s)
- Gabriela Krejčová
- Faculty of Science, Department of Molecular Biology and Genetics, University of South Bohemia, České Budějovice, Czech Republic
- Biology Centre CAS, Institute of Entomology, České Budějovice, Czech Republic
| | - Gabriela Ruphuy
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - Petra Šalamúnová
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - Erik Sonntag
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - František Štěpánek
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Prague, Czech Republic
| | - Adam Bajgar
- Faculty of Science, Department of Molecular Biology and Genetics, University of South Bohemia, České Budějovice, Czech Republic
- Biology Centre CAS, Institute of Entomology, České Budějovice, Czech Republic
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2
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Chen Y, Wang J, An C, Bao S, Zhang C. The role and research progress of macrophages after heart transplantation. Heliyon 2024; 10:e33844. [PMID: 39027574 PMCID: PMC11255595 DOI: 10.1016/j.heliyon.2024.e33844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Revised: 06/26/2024] [Accepted: 06/27/2024] [Indexed: 07/20/2024] Open
Abstract
Since the 60s of the 20th century, heart transplantation has been the best treatment for patients with end-stage heart failure. Due to the increasing number of patients, how to expand the number of donor organs and enhance immune compatibility has become an urgent problem to be solved at this stage. Although current immunosuppression is effective, its side effects are also quite obvious, such as opportunistic infections and malignant tumors. In this review, we focus on the important role in macrophages after heart transplantation and their potential targets for achieving allogeneic graft tolerance, in order to improve effective graft survival and reduce infection and the occurrence of malignant tumors.
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Affiliation(s)
- Yao Chen
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China
| | - JianPeng Wang
- School of First Clinical Medical College, Anhui Medical University, Hefei, China
| | - Cheng An
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China
| | - ShanQing Bao
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China
| | - ChengXin Zhang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230022, China
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3
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Owen MC, Kopecky BJ. Targeting Macrophages in Organ Transplantation: A Step Toward Personalized Medicine. Transplantation 2024:00007890-990000000-00690. [PMID: 38467591 DOI: 10.1097/tp.0000000000004978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Organ transplantation remains the most optimal strategy for patients with end-stage organ failure. However, prevailing methods of immunosuppression are marred by adverse side effects, and allograft rejection remains common. It is imperative to identify and comprehensively characterize the cell types involved in allograft rejection, and develop therapies with greater specificity. There is increasing recognition that processes mediating allograft rejection are the result of interactions between innate and adaptive immune cells. Macrophages are heterogeneous innate immune cells with diverse functions that contribute to ischemia-reperfusion injury, acute rejection, and chronic rejection. Macrophages are inflammatory cells capable of innate allorecognition that strengthen their responses to secondary exposures over time via "trained immunity." However, macrophages also adopt immunoregulatory phenotypes and may promote allograft tolerance. In this review, we discuss the roles of macrophages in rejection and tolerance, and detail how macrophage plasticity and polarization influence transplantation outcomes. A comprehensive understanding of macrophages in transplant will guide future personalized approaches to therapies aimed at facilitating tolerance or mitigating the rejection process.
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Affiliation(s)
- Macee C Owen
- Division of Cardiology, Department of Medicine, Center for Cardiovascular Research, Washington University School of Medicine, St. Louis, MI
| | - Benjamin J Kopecky
- Division of Cardiology, Department of Medicine, Center for Cardiovascular Research, Washington University School of Medicine, St. Louis, MI
- Department of Medicine, Division of Cardiology, University of Colorado Anschutz Medical Campus, Aurora, CO
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4
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Jeong S, Kim MB, Baek S, Lee J, Lee H, Cao B, Kim Y, Cao L, Lee S. Suppression of Pro-Inflammatory M1 Polarization of LPS-Stimulated RAW 264.7 Macrophage Cells by Fucoxanthin-Rich Sargassum hemiphyllum. Mar Drugs 2023; 21:533. [PMID: 37888467 PMCID: PMC10608208 DOI: 10.3390/md21100533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/07/2023] [Accepted: 10/11/2023] [Indexed: 10/28/2023] Open
Abstract
Macrophages play an important role in managing the onset and progression of chronic inflammatory diseases. The primary objective of this study is to explore the antioxidant potential and anti-inflammatory properties of Sargassum hemiphyllum ethanol extract (SHE) and its fraction. SHE and its five constituent fractions were assessed for overall antioxidant capabilities and inhibitory effects on LPS-induced inflammation by modulating macrophages polarization in both RAW 264.7 macrophages and bone-marrow-derived macrophages (BMDM). Among the organic solvent fractions of SHE, the ethyl acetate fraction displayed the highest total phenolic content and total antioxidant capacity. Notably, the n-hexane (Hex) fraction showed the most substantial suppression of LPS-induced tumor necrosis factor α secretion in BMDM among the five fractions of SHE. The SHE and Hex fraction significantly reduced the heightened expression of pro-inflammatory cytokines and inflammation-inducible enzymes induced by LPS in RAW 264.7 macrophages. In particular, the SHE and Hex fraction inhibited M1 macrophage polarization by reducing the mRNA expression of M1 macrophage markers in macrophages that were polarized toward the M1 phenotype. Furthermore, the SHE and Hex fraction attenuated the induction in nuclear factor E2-related factor 2 and its target genes, which was accompanied by an alteration in antioxidant gene expression in M1-polarized BMDM. The findings suggest that both SHE and its Hex fraction exhibit inhibitory effects on LPS-triggered inflammation and oxidative stress by modulating the polarization of M1 macrophages within macrophage populations.
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Affiliation(s)
- Seungjin Jeong
- Department of Smart Green Technology Engineering, Pukyong National University, Busan 48513, Republic of Korea; (S.J.); (S.B.); (J.L.); (H.L.)
| | - Mi-Bo Kim
- Department of Food Science and Nutrition, College of Fisheries Science, Pukyong National University, Busan 48513, Republic of Korea;
| | - Suhyeon Baek
- Department of Smart Green Technology Engineering, Pukyong National University, Busan 48513, Republic of Korea; (S.J.); (S.B.); (J.L.); (H.L.)
| | - Joowon Lee
- Department of Smart Green Technology Engineering, Pukyong National University, Busan 48513, Republic of Korea; (S.J.); (S.B.); (J.L.); (H.L.)
| | - Hyeju Lee
- Department of Smart Green Technology Engineering, Pukyong National University, Busan 48513, Republic of Korea; (S.J.); (S.B.); (J.L.); (H.L.)
| | - Bei Cao
- Warshel Institute for Computational Biology, The Chinese University of Hong Kong, Shenzhen 518172, China;
| | - Yongeun Kim
- Research Division of Food Functionality, Korea Food Research Institute, Jeollabuk-do 55365, Republic of Korea;
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Lei Cao
- Department of Food Science and Biotechnology, Gachon University, Seongnam 13120, Republic of Korea
| | - Sanggil Lee
- Department of Smart Green Technology Engineering, Pukyong National University, Busan 48513, Republic of Korea; (S.J.); (S.B.); (J.L.); (H.L.)
- Department of Food Science and Nutrition, College of Fisheries Science, Pukyong National University, Busan 48513, Republic of Korea;
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5
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Unzai T, Washisaka T, Tabata Y. An artificial silk elastin-like protein modifies the polarization of human macrophages line THP-1. J Biomater Appl 2023; 38:361-371. [PMID: 37494553 DOI: 10.1177/08853282231192186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
A silk elastin-like protein (SELP) is an artificial compound with silk fibroin-like and elastin-like tandem repeats. The objective of this study is to evaluate the influence of SELP on the polarization of human monocytoma cell line (THP-1)-derived macrophages. When the macrophages of inflammation-type (M1) were cultured with different concentrations of SELP solution, the secretion of a pro-inflammatory cytokine, tumor necrotizing factor (TNF) -α was significantly suppressed at the higher concentrations. In addition, the secretion of an anti-inflammation cytokine, interleukin (IL)-10, was significantly enhanced from the macrophage of M0-, M1-, and M2-types. By the incubation with soluble SELP, the morphology of M2-type macrophages changed to be of an extended shape. Following incubation with the sponge of SELP, M0-type macrophages secreted IL-10 with time. It is concluded that the SELP itself in solution has an ability to induce the anti-inflammation of M2-type macrophages.
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Affiliation(s)
- Tomo Unzai
- Laboratory of Biomaterials, Kyoto University Institute for Life and Medical Sciences, Kyoto, Japan
| | - Taichi Washisaka
- Laboratory of Biomaterials, Kyoto University Institute for Life and Medical Sciences, Kyoto, Japan
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Kyoto University Institute for Life and Medical Sciences, Kyoto, Japan
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Aghbash PS, Rasizadeh R, Arefi V, Nahand JS, Baghi HB. Immune-checkpoint expression in antigen-presenting cells (APCs) of cytomegaloviruses infection after transplantation: as a diagnostic biomarker. Arch Microbiol 2023; 205:280. [PMID: 37430000 DOI: 10.1007/s00203-023-03623-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/26/2023] [Accepted: 06/30/2023] [Indexed: 07/12/2023]
Abstract
Cytomegalovirus (CMV), a member of the Herpesviridae family, mostly causes only slight feverish symptoms or can be asymptomatic in immunocompetent individuals. However, it is known to be particularly a significant cause of morbidity in immunocompromised patients, including transplant recipients, whose immune system has been weakened due to the consumption of immunosuppressor drugs. Therefore, the diagnosis of CMV infection after transplantation is crucial. New diagnostic methods for the quick detection of CMV have been developed as a result of understanding the clinical importance of invasive CMV. Antigen-presenting cells (APCs) and T cells are important components of the immune system and it may be possible to diagnose viral infections using immunological markers, such as lymphocytosis, cytotoxic T lymphocytes (CTL), and serum cytokine levels. Moreover, PD-1, CTLA 4, and TIGIT, which are expressed on certain T cells and antigen-presenting cells, are over-expressed during the infection. The assessment of CMV infection based on T cell and APC activity, and the expression of immunological checkpoints, can be helpful for the diagnosis of transplant patients at risk for CMV infection. In this review, we will investigate how immune checkpoints affect immune cells and how they impair organ transplantation after CMV infection.
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Affiliation(s)
- Parisa Shiri Aghbash
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reyhaneh Rasizadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Vahid Arefi
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, 5166/15731, Iran
- Department of Microbiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Javid Sadri Nahand
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, 5166/15731, Iran
| | - Hossein Bannazadeh Baghi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
- Department of Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, 5166/15731, Iran.
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7
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Pham HL, Hoang TX, Kim JY. Human Regulatory Macrophages Derived from THP-1 Cells Using Arginylglycylaspartic Acid and Vitamin D3. Biomedicines 2023; 11:1740. [PMID: 37371835 DOI: 10.3390/biomedicines11061740] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/15/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
Regulatory macrophages (Mregs) are unique in that they have anti-inflammatory and immunosuppressive properties. Thus, treating inflammatory diseases using Mregs is an area of active research. Human Mregs are usually generated by culturing peripheral blood monocytes stimulated using a macrophage colony-stimulating factor with interferon (IFN)-γ. Herein, we generated Mregs with an elongated cell morphology from THP-1 cells that were stimulated with phorbol 12-myristate 13-acetate and cultured with both arginylglycylaspartic acid and vitamin D3. These Mregs regulated macrophage function, and respectively downregulated and upregulated the expression of pro-inflammatory and immunosuppressive mediators. They also expressed Mregs-specific markers, such as dehydrogenase/reductase 9, even when exposed to such inflammatory stimulants as IFN-γ, lipopolysaccharide, purified xenogeneic antigen, and xenogeneic cells. The Mregs also exerted anti-inflammatory and anticoagulatory actions in response to xenogeneic cells, as well as exerting immunosuppressive effects on mitogen-induced Jurkat T-cell proliferation. Our method of generating functional Mregs in vitro without cytokines is simple and cost-effective.
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Affiliation(s)
- Hoang Lan Pham
- Department of Life Science, Gachon University, Seongnam 13120, Gyeonggi-Do, Republic of Korea
| | - Thi Xoan Hoang
- Department of Life Science, Gachon University, Seongnam 13120, Gyeonggi-Do, Republic of Korea
| | - Jae Young Kim
- Department of Life Science, Gachon University, Seongnam 13120, Gyeonggi-Do, Republic of Korea
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8
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Jerkic M, Szaszi K, Laffey JG, Rotstein O, Zhang H. Key Role of Mesenchymal Stromal Cell Interaction with Macrophages in Promoting Repair of Lung Injury. Int J Mol Sci 2023; 24:ijms24043376. [PMID: 36834784 PMCID: PMC9965074 DOI: 10.3390/ijms24043376] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/30/2023] [Accepted: 02/04/2023] [Indexed: 02/11/2023] Open
Abstract
Lung macrophages (Mφs) are essential for pulmonary innate immunity and host defense due to their dynamic polarization and phenotype shifts. Mesenchymal stromal cells (MSCs) have secretory, immunomodulatory, and tissue-reparative properties and have shown promise in acute and chronic inflammatory lung diseases and in COVID-19. Many beneficial effects of MSCs are mediated through their interaction with resident alveolar and pulmonary interstitial Mφs. Bidirectional MSC-Mφ communication is achieved through direct contact, soluble factor secretion/activation, and organelle transfer. The lung microenvironment facilitates MSC secretion of factors that result in Mφ polarization towards an immunosuppressive M2-like phenotype for the restoration of tissue homeostasis. M2-like Mφ in turn can affect the MSC immune regulatory function in MSC engraftment and tissue reparatory effects. This review article highlights the mechanisms of crosstalk between MSCs and Mφs and the potential role of their interaction in lung repair in inflammatory lung diseases.
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Affiliation(s)
- Mirjana Jerkic
- The Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Unity Health Toronto, University of Toronto, Toronto, ON M5B 1T8, Canada
- Correspondence:
| | - Katalin Szaszi
- The Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Unity Health Toronto, University of Toronto, Toronto, ON M5B 1T8, Canada
- Department of Surgery, University of Toronto, Toronto, ON M5T 1P5, Canada
| | - John G. Laffey
- The Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Unity Health Toronto, University of Toronto, Toronto, ON M5B 1T8, Canada
- Anaesthesia and Intensive Care Medicine, School of Medicine, University of Galway, H91 TK33 Galway, Ireland
| | - Ori Rotstein
- The Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Unity Health Toronto, University of Toronto, Toronto, ON M5B 1T8, Canada
- Department of Surgery, University of Toronto, Toronto, ON M5T 1P5, Canada
| | - Haibo Zhang
- The Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Unity Health Toronto, University of Toronto, Toronto, ON M5B 1T8, Canada
- Department of Anesthesiology and Pain Medicine, Interdepartmental Division of Critical Care Medicine and Department of Physiology, University of Toronto, Toronto, ON M5G 1E2, Canada
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P-glycoprotein, FK-binding Protein-12, and the Intracellular Tacrolimus Concentration in T-lymphocytes and Monocytes of Kidney Transplant Recipients. Transplantation 2023; 107:382-391. [PMID: 36070572 DOI: 10.1097/tp.0000000000004287] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND . Transplant recipients may develop rejection despite having adequate tacrolimus whole blood predose concentrations (C 0 ). The intra-immune cellular concentration is potentially a better target than C 0 . However, little is known regarding intracellular tacrolimus concentration in T-lymphocytes and monocytes. We investigated the tacrolimus concentrations in both cell types and their relation with the expression and activity of FK-binding protein (FKBP)-12 and P-glycoprotein (P-gp). METHODS . T-lymphocytes and monocytes were isolated from kidney transplant recipients followed by intracellular tacrolimus concentration measurement. FKBP-12 and P-gp were quantified with Western blot, flow cytometry, and the Rhodamine-123 assay. Interleukin-2 and interferon-γ in T-lymphocytes were measured to quantify the effect of tacrolimus. RESULTS . Tacrolimus concentration in T-lymphocytes was lower than in monocytes (15.3 [8.5-33.4] versus 131.0 [73.5-225.1] pg/million cells; P < 0.001). The activity of P-gp (measured by Rhodamine-123 assay) was higher in T-lymphocytes than in monocytes. Flow cytometry demonstrated a higher expression of P-gp (normalized mean fluorescence intensity 1.5 [1.2-1.7] versus 1.2 [1.1-1.4]; P = 0.012) and a lower expression of FKBP-12 (normalized mean fluorescence intensity 1.3 [1.2-1.7] versus 1.5 [1.4-2.0]; P = 0.011) in T-lymphocytes than monocytes. Western blot confirmed these observations. The addition of verapamil, a P-gp inhibitor, resulted in a 2-fold higher intra-T-cell tacrolimus concentration. This was accompanied by a significantly fewer cytokine-producing cells. CONCLUSIONS . T-lymphocytes have a higher activity of P-gp and lower concentration of the FKBP-12 compared with monocytes. This explains the relatively lower tacrolimus concentration in T-lymphocytes. The addition of verapamil prevents loss of intracellular tacrolimus during the cell isolation process and is required to ensure adequate intracellular concentration measurement.
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Macrophages: From Simple Phagocyte to an Integrative Regulatory Cell for Inflammation and Tissue Regeneration-A Review of the Literature. Cells 2023; 12:cells12020276. [PMID: 36672212 PMCID: PMC9856654 DOI: 10.3390/cells12020276] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/29/2022] [Accepted: 01/07/2023] [Indexed: 01/12/2023] Open
Abstract
The understanding of macrophages and their pathophysiological role has dramatically changed within the last decades. Macrophages represent a very interesting cell type with regard to biomaterial-based tissue engineering and regeneration. In this context, macrophages play a crucial role in the biocompatibility and degradation of implanted biomaterials. Furthermore, a better understanding of the functionality of macrophages opens perspectives for potential guidance and modulation to turn inflammation into regeneration. Such knowledge may help to improve not only the biocompatibility of scaffold materials but also the integration, maturation, and preservation of scaffold-cell constructs or induce regeneration. Nowadays, macrophages are classified into two subpopulations, the classically activated macrophages (M1 macrophages) with pro-inflammatory properties and the alternatively activated macrophages (M2 macrophages) with anti-inflammatory properties. The present narrative review gives an overview of the different functions of macrophages and summarizes the recent state of knowledge regarding different types of macrophages and their functions, with special emphasis on tissue engineering and tissue regeneration.
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11
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Unzai T, Washisaka T, Tabata Y. An Artificial Silk Elastin-Like Protein Modifies the Polarization of Macrophages. ACS APPLIED BIO MATERIALS 2022; 5:5657-5664. [PMID: 36445042 DOI: 10.1021/acsabm.2c00701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
A silk elastin-like protein (SELP) is an artificial compound with silk fibroin-like and elastin-like tandem repeats. The objective of this study is to evaluate the influence of SELP on the polarization of mouse bone marrow-derived macrophages. When the macrophages of inflammation-type (M1) were cultured with different concentrations of SELP solution, the secretion of a pro-inflammatory cytokine, tumor necrotizing factor (TNF)-α, was significantly suppressed at the higher concentrations. In addition, the secretion of an anti-inflammation cytokine, interleukin (IL)-10, was significantly enhanced from the macrophage of an original type (M0). By the incubation with soluble SELP, the morphology of M0- and M1-type macrophages changed to be of a round shape with a large size. Following incubation with the sponge of SELP, the M0-type macrophages secreted IL-10 with time. When injected into an air pouch of mice subcutis which had been prepared by the injection of air, the SELP sponge and 5 wt % of SELP solution induced IL-10 secretion to a significantly high extent compared with the saline injection. Cells isolated from the air pouch 24 h after the injection were stained by the CD206 of a M2 marker. It is concluded that the SELP itself in solution has an ability to induce the anti-inflammation M2-type macrophages.
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Affiliation(s)
- Tomo Unzai
- Laboratory of Biomaterials, Institute for Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Taichi Washisaka
- Laboratory of Biomaterials, Institute for Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Institute for Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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12
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Xu H, Zhao Y, Zhao Q, Shi M, Zhang Z, Ding W, Zhao Y. Tuberous Sclerosis Complex 1 Deficiency in Macrophages Promotes Unclassical Inflammatory Response to Lipopolysaccharide In Vitro and Dextran Sodium Sulfate-Induced Colitis in Mice. Aging Dis 2022; 13:1875-1890. [PMID: 36465179 PMCID: PMC9662278 DOI: 10.14336/ad.2022.0408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 04/08/2022] [Indexed: 09/01/2023] Open
Abstract
Human tuberous sclerosis (TSC) is mainly caused by genetic mutations of tuberous TSC1or TSC2. Recent studies found that TSC1 deficiency promoted classical M1 macrophage polarization. However, whether TSC1 regulates other inflammatory cytokine expression in lipopolysaccharidem (LPS)-stimulated macrophages is unknown. Herein, we studied the cytokine expression profile of wild-type (WT) and TSC1-deleted macrophages after LPS stimulation in vitro and the pathogenesis of dextran sodium sulfate (DSS)-induced colitis in mice with myeloid-specific TSC1 deletion (TSC1cKO mice). We found that TSC1-deficient macrophages exhibited the enhanced secretion of interleukin-17A (IL-17A), IL-17F, and interferon-gamma (IFN-γ) in response to LPS stimulation in vitro. This is in contrast to LPS-stimulated WT macrophages, which usually do not. Importantly, TSC1cKO mice exhibited exacerbated DSS-induced acute colitis with severer symptoms. MTOR deletion or rapamycin treatment significantly reversed the enhanced expressions of IL-17A, IL-17F, and IFN-γ in LPS-stimulated TSC1-deficient macrophages in vitro and rescued the enhanced DSS-induced colitis in TSC1cKO mice, indicating that TSC1 deficiency increased these cytokine productions in an mTOR-dependent manner. RNA-sequencing and molecular studies indicated that TSC1 deficiency enhanced the aerobic glycolysis process and the activities of mTOR-STAT3-RORγT pathway in LPS-stimulated macrophages. Inhibition of aerobic glycolysis, STAT3, or RORγT reversed IL-17 and IFN-γ expression in LPS-treated TSC1-deficient macrophages. Thus, TSC1 is essential for macrophages to shut down IL-17A, IL-17F, and IFN-γ expression during LPS stimulation by suppressing the aerobic glycolysis process and mTOR-STAT3, RORγT, and T-bet pathways. The present study uncovered the key role of TSC1 in shutting down IL-17A, IL-17F, and IFN-γ expressions in LPS-treated macrophages.
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Affiliation(s)
- Huawen Xu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
- Cunji Medical College, University of Chinese Academy of Sciences, Beijing, China.
| | - Yang Zhao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
- Cunji Medical College, University of Chinese Academy of Sciences, Beijing, China.
| | - Qingjie Zhao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China.
| | - Mingpu Shi
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
- Cunji Medical College, University of Chinese Academy of Sciences, Beijing, China.
| | - Zhaoqi Zhang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
- Cunji Medical College, University of Chinese Academy of Sciences, Beijing, China.
| | - Wenjun Ding
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China.
| | - Yong Zhao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
- Cunji Medical College, University of Chinese Academy of Sciences, Beijing, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China.
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13
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Ghilas S, O’Keefe R, Mielke LA, Raghu D, Buchert M, Ernst M. Crosstalk between epithelium, myeloid and innate lymphoid cells during gut homeostasis and disease. Front Immunol 2022; 13:944982. [PMID: 36189323 PMCID: PMC9524271 DOI: 10.3389/fimmu.2022.944982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/29/2022] [Indexed: 12/05/2022] Open
Abstract
The gut epithelium not only provides a physical barrier to separate a noxious outside from a sterile inside but also allows for highly regulated interactions between bacteria and their products, and components of the immune system. Homeostatic maintenance of an intact epithelial barrier is paramount to health, requiring an intricately regulated and highly adaptive response of various cells of the immune system. Prolonged homeostatic imbalance can result in chronic inflammation, tumorigenesis and inefficient antitumor immune control. Here we provide an update on the role of innate lymphoid cells, macrophages and dendritic cells, which collectively play a critical role in epithelial barrier maintenance and provide an important linkage between the classical innate and adaptive arm of the immune system. These interactions modify the capacity of the gut epithelium to undergo continuous renewal, safeguard against tumor formation and provide feedback to the gut microbiome, which acts as a seminal contributor to cellular homeostasis of the gut.
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Affiliation(s)
- Sonia Ghilas
- Mucosal Immunity Laboratory, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
| | - Ryan O’Keefe
- Cancer and Inflammation Program, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
| | - Lisa Anna Mielke
- Mucosal Immunity Laboratory, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
| | - Dinesh Raghu
- Mucosal Immunity Laboratory, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
| | - Michael Buchert
- Cancer and Inflammation Program, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
- *Correspondence: Michael Buchert, ; Matthias Ernst,
| | - Matthias Ernst
- Cancer and Inflammation Program, Olivia Newton-John Cancer Research Institute, and La Trobe University - School of Cancer Medicine, Heidelberg, VIC, Australia
- *Correspondence: Michael Buchert, ; Matthias Ernst,
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14
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Namdari H, Hosseini M, Yazdanifar M, Farajifard H, Parvizpour F, Karamigolbaghi M, Hamidieh AA, Rezaei F. Protective and pathological roles of regulatory immune cells in human cytomegalovirus infection following hematopoietic stem cell transplantation. Rev Med Virol 2021; 32:e2319. [PMID: 34914147 DOI: 10.1002/rmv.2319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 11/11/2022]
Abstract
Human cytomegalovirus (HCMV) is ubiquitously prevalent. Immune system in healthy individuals is capable of controlling HCMV infection; however, HCMV can be life-threatening for immunocompromised individuals, such as transplant recipients. Both innate and adaptive immune systems are critically involved in the HCMV infection. Recent studies have indicated that regulatory immune cells which play essential roles in maintaining a healthy immune environment are closely related to immune response in HCMV infection. However, the exact role of regulatory immune cells in immune regulation and homoeostasis during the battle between HCMV and host still requires further research. In this review, we highlight the protective and pathological roles of regulatory immune cells in HCMV infection following hematopoietic stem cell transplantation (HSCT).
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Affiliation(s)
- Haideh Namdari
- Iranian Tissue Bank and Research Center, Gene, Cell and Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Hosseini
- Pediatric Cell and Gene Therapy Research Center, Gene, Cell and Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahboubeh Yazdanifar
- Department of Pediatrics, Stem Cell Transplantation and Regenerative Medicine, Stanford University School of Medicine, Palo Alto, California, USA
| | - Hamid Farajifard
- Iranian Tissue Bank and Research Center, Gene, Cell and Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Farzad Parvizpour
- Iranian Tissue Bank and Research Center, Gene, Cell and Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Karamigolbaghi
- Iranian Tissue Bank and Research Center, Gene, Cell and Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Amir Ali Hamidieh
- Pediatric Cell and Gene Therapy Research Center, Gene, Cell and Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Farhad Rezaei
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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15
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Conte E. Targeting monocytes/macrophages in fibrosis and cancer diseases: Therapeutic approaches. Pharmacol Ther 2021; 234:108031. [PMID: 34774879 DOI: 10.1016/j.pharmthera.2021.108031] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/19/2021] [Accepted: 11/02/2021] [Indexed: 02/08/2023]
Abstract
Over almost 140 years since their identification, the knowledge about macrophages has unbelievably evolved. The 'big eaters' from being thought of as simple phagocytic cells have been recognized as master regulators in immunity, homeostasis, healing/repair and organ development. Long considered to originate exclusively from bone marrow-derived circulating monocytes, macrophages have been also demonstrated to be the first immune cells colonizing tissues in the developing embryo and persisting in adult life by self-renewal, as long-lived tissue resident macrophages. Therefore, heterogeneous populations of macrophages with different ontogeny and functions co-exist in tissues. Macrophages act as sentinels of homeostasis and are intrinsically programmed to lead the wound healing and repair processes that occur after injury. However, in certain pathological circumstances macrophages get dysfunctional, and impaired or aberrant macrophage activities become key features of diseases. For instance, in both fibrosis and cancer, that have been defined 'wounds that do not heal', dysfunctional monocyte-derived macrophages overall play a key detrimental role. On the other hand, due to their plasticity these cells can be 're-educated' and exert anti-fibrotic and anti-cancer functions. Therefore macrophages represent an important therapeutic target in both fibrosis and cancer diseases. The current review will illustrate new insights into the role of monocytes/macrophages in these devastating diseases and summarize new therapeutic strategies and applications of macrophage-targeted drug development in their clinical setting.
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16
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Ji J, Zhuang Y, Wang H, Feng C, Zhao Y, Zhang X. M-CSF and prostratin induced Mregs promote immune tolerance in transplanted mice through Arg-1 pathway. Int Immunopharmacol 2021; 99:108014. [PMID: 34332340 DOI: 10.1016/j.intimp.2021.108014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/17/2021] [Accepted: 07/20/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Regulatory macrophages (Mregs) are a group of heterogeneous macrophages. These cells could induce immunosuppressive effects through the expression of immune regulatory molecules and cytokines. METHODS The differentiation of Mregs was induced by treating bone marrow cells with M-CSF and prostratin in vitro. The cell-phenotypes and immunosuppressive function were determined by flow cytometry. Rt-PCR was employed to assess the mechanisms of Mregs. Skin grafted mouse model was used for in vivo validation. RESULTS Mregs induced by M-CSF + prostratin had a strong inhibitory effect on T cell proliferation and cytokines production. The phenotype of induced bone marrow cells changed towards Mregs. These Mregs could induce the differentiation of Tregs in vivo. Arg-1 expression in these cells were significantly upregulated. Inhibition of arginase (Arg) or arginine supplement significantly reversed the immunosuppressive function. In mice skin-grafted models, adoptive transfer of these Mregs significantly prolonged allograft survival. In mice models, Arg-1 expression significantly elevated on skin grafts cells and Tregs increased in graft tissues. CONCLUSIONS We successfully developed a Mregs-inducing protocol with the combination of M-CSF and prostratin in vitro. M-CSF + prostratin induced Mregs prevented mice skin graft rejection through upregulating the expression Arg-1.
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Affiliation(s)
- Jiawei Ji
- Capital Medical University, Beijing, China; Department of Urology, Capital Medical University Beijing Chaoyang Hospital, Beijing, China
| | - Yuan Zhuang
- Department of Blood Transfusion, First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Haozhou Wang
- Department of Urology, Capital Medical University Beijing Chaoyang Hospital, Beijing, China
| | - Chang Feng
- Transplantation Biology Research Division, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yong Zhao
- Transplantation Biology Research Division, State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaodong Zhang
- Department of Urology, Capital Medical University Beijing Chaoyang Hospital, Beijing, China.
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17
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Guihaire J, Deuse T, Wang D, Spin JM, Blankenberg FG, Fadel E, Reichenspurner H, Schrepfer S. Immunomodulation Therapy Using Tolerogenic Macrophages in a Rodent Model of Pulmonary Hypertension. Stem Cells Dev 2021; 30:515-525. [PMID: 33726521 DOI: 10.1089/scd.2021.0007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Inflammation plays a major role in the pathogenesis of pulmonary hypertension (PH). We sought to investigate the effects of a cell-based immunomodulation in a dysimmune model of PH. PH was induced in athymic nude rats using semaxinib (Su group, n = 6). Tolerogenic macrophages (toM) were generated from monocyte isolation and then injected either the day before semaxinib injection (Prevention group, n = 6) or 3 weeks after (Reversion group, n = 6). Six athymic nude rats were used as controls. In vivo trafficking of toM was investigated with bioluminescence imaging showing that toM were mainly located into the lungs until 48 h after injection. Right ventricular (RV) end-systolic pressure and RV systolic function were assessed at 4 weeks using echocardiography. Morphometric analysis and RNA sequencing of the lungs were realized at 4 weeks. Rats treated with toM (Prevention and Reversion groups) had a significantly lower RV end-systolic pressure at 4 weeks (respectively, 25 ± 8 and 30 ± 6 mmHg vs. 67 ± 9 mmHg, P < 0.001), while RV systolic dysfunction was observed in Su and Reversion groups. Mean medial wall thickness of small arterioles was lower in Prevention and Reversion groups compared with the Su group (respectively, 10.9% ± 0.8% and 16.4% ± 1.3% vs. 28.2% ± 2.1%, P < 0.001). Similarly, cardiomyocyte area was decreased in rats treated with toM (150 ± 18 and 160 ± 86 μm2 vs. 279 ± 50 μm2, P < 0.001). A trend toward upregulation of genes involved in pulmonary arterial hypertension pathobiology was found in Su rats, while KCNK3 was significantly downregulated (fold-change = 9.8, P < 0.001). Injection of toM was associated with a less severe phenotype of PH in rats exposed to angioproliferative stress. Preserved expression of KCNK3 may explain the protective effect of toM.
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Affiliation(s)
- Julien Guihaire
- Transplant and Stem Cells Immunobiology (TSI) Lab, University Heart Center of Hamburg, Hamburg, Germany
- Department of Cardiac Surgery, Inserm UMR_S 999, Pulmonary Hypertension: Pathophysiology and Novel Therapies, Marie Lannelongue Hospital, Groupe Hospitalier Paris Saint Joseph, University of Paris-Saclay School of Medicine, Le Plessis Robinson, France
| | - Tobias Deuse
- Transplant and Stem Cells Immunobiology (TSI) Lab, University Heart Center of Hamburg, Hamburg, Germany
- Transplant and Stem Cells Immunobiology (TSI) Lab, Department of Surgery, University of California San Francisco, San Francisco, California, USA
| | - Dong Wang
- Transplant and Stem Cells Immunobiology (TSI) Lab, University Heart Center of Hamburg, Hamburg, Germany
- Transplant and Stem Cells Immunobiology (TSI) Lab, Department of Surgery, University of California San Francisco, San Francisco, California, USA
- Cardiovascular Research Center Hamburg (CVRC) and DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Luebeck, Hamburg, Germany
| | - Joshua M Spin
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Palo Alto, California, USA
| | - Francis G Blankenberg
- Division of Pediatric Radiology, Department of Radiology/MIPS, Lucile Salter Packard Children's Hospital, Stanford University, Palo Alto, California, USA
| | - Elie Fadel
- Thoracic and Vascular Surgery, Heart and Lung Transplantation, Marie Lannelongue Hospital, Groupe Hospitalier Paris Saint Joseph, University of Paris-Saclay School of Medicine, Le Plessis Robinson, France
| | - Hermann Reichenspurner
- Cardiovascular Research Center Hamburg (CVRC) and DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Luebeck, Hamburg, Germany
- Department of Cardiovascular Surgery, University Heart Center of Hamburg, Hamburg, Germany
| | - Sonja Schrepfer
- Transplant and Stem Cells Immunobiology (TSI) Lab, University Heart Center of Hamburg, Hamburg, Germany
- Transplant and Stem Cells Immunobiology (TSI) Lab, Department of Surgery, University of California San Francisco, San Francisco, California, USA
- Cardiovascular Research Center Hamburg (CVRC) and DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Luebeck, Hamburg, Germany
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18
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Nuts and bolts of the salt-inducible kinases (SIKs). Biochem J 2021; 478:1377-1397. [PMID: 33861845 PMCID: PMC8057676 DOI: 10.1042/bcj20200502] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 12/24/2022]
Abstract
The salt-inducible kinases, SIK1, SIK2 and SIK3, most closely resemble the AMP-activated protein kinase (AMPK) and other AMPK-related kinases, and like these family members they require phosphorylation by LKB1 to be catalytically active. However, unlike other AMPK-related kinases they are phosphorylated by cyclic AMP-dependent protein kinase (PKA), which promotes their binding to 14-3-3 proteins and inactivation. The most well-established substrates of the SIKs are the CREB-regulated transcriptional co-activators (CRTCs), and the Class 2a histone deacetylases (HDAC4/5/7/9). Phosphorylation by SIKs promotes the translocation of CRTCs and Class 2a HDACs to the cytoplasm and their binding to 14-3-3s, preventing them from regulating their nuclear binding partners, the transcription factors CREB and MEF2. This process is reversed by PKA-dependent inactivation of the SIKs leading to dephosphorylation of CRTCs and Class 2a HDACs and their re-entry into the nucleus. Through the reversible regulation of these substrates and others that have not yet been identified, the SIKs regulate many physiological processes ranging from innate immunity, circadian rhythms and bone formation, to skin pigmentation and metabolism. This review summarises current knowledge of the SIKs and the evidence underpinning these findings, and discusses the therapeutic potential of SIK inhibitors for the treatment of disease.
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19
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Decitabine Promotes Modulation in Phenotype and Function of Monocytes and Macrophages That Drive Immune Response Regulation. Cells 2021; 10:cells10040868. [PMID: 33921194 PMCID: PMC8069756 DOI: 10.3390/cells10040868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/29/2021] [Accepted: 04/06/2021] [Indexed: 12/14/2022] Open
Abstract
Decitabine is an approved hypomethylating agent used for treating hematological malignancies. Although decitabine targets altered cells, epidrugs can trigger immunomodulatory effects, reinforcing the hypothesis of immunoregulation in treated patients. We therefore aimed to evaluate the impact of decitabine treatment on the phenotype and functions of monocytes and macrophages, which are pivotal cells of the innate immunity system. In vitro decitabine administration increased bacterial phagocytosis and IL-8 release, but impaired microbicidal activity of monocytes. In addition, during monocyte-to-macrophage differentiation, treatment promoted the M2-like profile, with increased expression of CD206 and ALOX15. Macrophages also demonstrated reduced infection control when exposed to Mycobacterium tuberculosis in vitro. However, cytokine production remained unchanged, indicating an atypical M2 macrophage. Furthermore, when macrophages were cocultured with lymphocytes, decitabine induced a reduction in the release of inflammatory cytokines such as IL-1β, TNF-α, and IFN-γ, maintaining IL-10 production, suggesting that decitabine could potentialize M2 polarization and might be considered as a therapeutic against the exacerbated immune response.
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20
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Zhuang J, Hou J. The Role of Regulatory Myeloid Cell Therapy in Renal Allograft Rejection. Front Immunol 2021; 12:625998. [PMID: 33717141 PMCID: PMC7943475 DOI: 10.3389/fimmu.2021.625998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 02/03/2021] [Indexed: 11/13/2022] Open
Abstract
Kidney transplantation is a primary therapy for end-stage renal disease (ESRD) all the time. But it does not mean that we have fully unraveling the mystery of kidney transplantation and confer every patient favorable prognosis. Immune rejection has always been a stumbling block when we try to increase the success rate of kidney transplantation and improve long-term outcomes. Even if the immune rejection is effectively controlled in acute phase, there is a high possibility that the immune response mediated by chronically activated antibodies will trigger chronic rejection and ultimately lead to graft failure. At present, immunosuppressive agent prepared chemically is mainly used to prevent acute or chronic rejection, but it failed to increase the long-term survival rate of allografts or reduce the incidence of chronic rejection after acute rejection, and is accompanied by many adverse reactions. Therefore, many studies have begun to use immune cells to regulate the immune response in order to control allograft rejection. This article will focus on the latest study and prospects of more popular regulatory myeloid cells in the direction of renal transplantation immunotherapy and introduce their respective progress from experimental research to clinical research.
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Affiliation(s)
- Jingming Zhuang
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
| | - Jiangang Hou
- Department of Urology, Huashan Hospital, Fudan University, Shanghai, China
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21
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Regulatory T Cells for the Induction of Transplantation Tolerance. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021. [PMID: 33523454 DOI: 10.1007/978-981-15-6407-9_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/10/2023]
Abstract
Organ transplantation is the optimal treatment for terminal and irreversible organ failure. Achieving transplantation tolerance has long been the ultimate goal in the field of transplantation. Regulatory T cell (Treg)-based therapy is a promising novel approach for inducing donor organ-specific tolerance. Tregs play critical roles in the maintenance of immune homeostasis and self-tolerance, by promoting transplantation tolerance through a variety of mechanisms on different target cells, including anti-inflammatory cytokine production, induction of apoptosis, disruption of metabolic pathways, and mutual interaction with dendritic cells. The continued success of Treg-based therapy in the clinical setting is critically dependent on preclinical studies that support its translational potential. However, although some initial clinical trials of adoptive Treg therapy have successively demonstrated safety and efficacy for immunosuppressant minimization and transplantation tolerance induction, most Treg-based hematopoietic stem cell and solid organ clinical trials are still in their infancy. These clinical trials have not only focused on safety and efficacy but also included optimization and standardization protocols of good manufacturing practice regarding cell isolation, expansion, dosing, timing, specificity, quality control, concomitant immunosuppressants, and post-administration monitoring. We herein report a brief introduction of Tregs, including their phenotypic and functional characterization, and focus on the clinical translation of Treg-based therapeutic applications in the setting of transplantation.
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22
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Muñoz M, Hegazy AN, Brunner TM, Holecska V, Marek RM, Fröhlich A, Löhning M. Th2 cells lacking T-bet suppress naive and memory T cell responses via IL-10. Proc Natl Acad Sci U S A 2021; 118:e2002787118. [PMID: 33526653 PMCID: PMC8017670 DOI: 10.1073/pnas.2002787118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Exacerbated immune responses and loss of self-tolerance lead to the development of autoimmunity and immunopathology. Novel therapies to target autoreactive T cells are still needed. Here, we report that Th2-polarized T cells lacking the transcription factor T-bet harbor strong immunomodulatory potential and suppress antigen-specific CD8+ T cells via IL-10. Tbx21-/- Th2 cells protected mice against virus-induced type 1 diabetes development and suppressed not only naive but also memory CD8+ T cell responses. IL-10-producing, but not IL-10-deficient Tbx21-/- Th2 cells down-regulated costimulatory molecules on dendritic cells and reduced their IL-12 production after lymphocytic choriomeningitis virus infection. Impaired dendritic cell activation hindered effector and cytotoxic CD8+ T cell development after infection. These findings indicate that Tbx21-/- Th2 cells strongly suppress proinflammatory responses of naive and memory T cells via IL-10. Thus, in vivo IL-10-secreting Th2 cells could harbor a therapeutic potential for the treatment of T cell-mediated inflammatory disorders.
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Affiliation(s)
- Melba Muñoz
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
- Dermatological Allergology, Allergie-Centrum-Charité, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Clinician Scientist Program, Berlin Institute of Health, 10178 Berlin, Germany
| | - Ahmed N Hegazy
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
- Clinician Scientist Program, Berlin Institute of Health, 10178 Berlin, Germany
- Department of Gastroenterology, Infectious Diseases and Rheumatology, Charité-Universitätsmedizin Berlin, 12203 Berlin, Germany
| | - Tobias M Brunner
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
| | - Vivien Holecska
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
| | - Roman M Marek
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
| | - Anja Fröhlich
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
| | - Max Löhning
- Experimental Immunology and Osteoarthritis Research, Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin Berlin, 10117 Berlin, Germany;
- Pitzer Laboratory of Osteoarthritis Research, German Rheumatism Research Center, Leibniz Institutes, 10117 Berlin, Germany
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23
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Zhang F, Zhang J, Cao P, Sun Z, Wang W. The characteristics of regulatory macrophages and their roles in transplantation. Int Immunopharmacol 2021; 91:107322. [PMID: 33418238 DOI: 10.1016/j.intimp.2020.107322] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 11/25/2020] [Accepted: 12/16/2020] [Indexed: 12/24/2022]
Abstract
Regulatory macrophages (Mregs) are a subtype of macrophages that are involved in regulating immune responses and inhibiting activated T lymphocyte proliferation. With advances in our basic understanding of Mregs and the revelation of their biological characteristics, Mregs have become a focus of research. In addition to promoting malignant tumor progression, Mregs also play an immunosuppressive role in inflammatory diseases and transplantation. Recent studies have shown that Mregs are closely associated with the induction of transplantation immune tolerance. Immune regulatory cell treatment as an adjunct immunosuppressive therapy offers new insights into the mechanism by which transplantation immune tolerance is established. The application of Mreg-based cellular immunotherapy has shown promise in clinical solid organ transplantation. Here, we provide a comprehensive overview of Mreg morphology, phenotype, induction and negative immunoregulatory function and discuss the role of Mregs in different transplantation models as well as their potential application value in clinical organ transplantation.
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Affiliation(s)
- Feilong Zhang
- Department of Urology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
| | - Jiandong Zhang
- Department of Urology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Peng Cao
- Department of Urology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Zejia Sun
- Department of Urology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Wei Wang
- Department of Urology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
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24
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Hu Q, Xia X, Kang X, Song P, Liu Z, Wang M, Lu X, Guan W, Liu S. A review of physiological and cellular mechanisms underlying fibrotic postoperative adhesion. Int J Biol Sci 2021; 17:298-306. [PMID: 33390851 PMCID: PMC7757036 DOI: 10.7150/ijbs.54403] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 11/13/2020] [Indexed: 12/27/2022] Open
Abstract
Postoperative adhesions (PA) are fibrotic tissues that are the most common driver of long-term morbidity after abdominal and pelvic surgery. The optimal drug or material to prevent adhesion formation has not yet been discovered. Comprehensive understanding of cellular and molecular mechanisms of adhesion process stimulates the design of future anti-adhesive strategies. Recently, disruption of peritoneal mesothelial cells were suggested as the 'motor' of PA formation, followed by a cascade of events (coagulation, inflammation, fibrinolysis) and influx of various immune cells, ultimately leading to a fibrous exudate. We showed that a variety of immune cells were recruited into adhesive peritoneal tissues in patients with small bowel obstruction caused by PA. The interactions among various types of immune cells contribute to PA development following peritoneal trauma. Our review focuses on the specific role of different immune cells in cellular and humoral mechanisms underpinning adhesion development.
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Affiliation(s)
- Qiongyuan Hu
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School
| | - Xuefeng Xia
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School
| | - Xing Kang
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School
| | - Peng Song
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School
| | - Zhijian Liu
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School
| | - Meng Wang
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School
| | - Xiaofeng Lu
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School
| | - Wenxian Guan
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School
| | - Song Liu
- Department of Gastrointestinal Surgery, Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University Medical School
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25
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Wu Y, Luo J, Garden OA. Immunoregulatory Cells in Myasthenia Gravis. Front Neurol 2020; 11:593431. [PMID: 33384654 PMCID: PMC7769807 DOI: 10.3389/fneur.2020.593431] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 11/23/2020] [Indexed: 12/22/2022] Open
Abstract
Myasthenia gravis (MG) is a T cell-dependent, B-cell mediated autoimmune disease caused by antibodies against the nicotinic acetylcholine receptor or other components of the post-synaptic muscle endplate at the neuromuscular junction. These specific antibodies serve as excellent biomarkers for diagnosis, but do not adequately substitute for clinical evaluations to predict disease severity or treatment response. Several immunoregulatory cell populations are implicated in the pathogenesis of MG. The immunophenotype of these populations has been well-characterized in human peripheral blood. CD4+FoxP3+ regulatory T cells (Tregs) are functionally defective in MG, but there is a lack of consensus on whether they show numerical perturbations. Myeloid-derived suppressor cells (MDSCs) have also been explored in the context of MG. Adoptive transfer of CD4+FoxP3+ Tregs or MDSCs suppresses ongoing experimental autoimmune MG (EAMG), a rodent model of MG, suggesting a protective role of both populations in this disease. An imbalance between follicular Tregs and follicular T helper cells is found in untreated MG patients, correlating with disease manifestations. There is an inverse correlation between the frequency of circulating IL-10–producing B cells and clinical status in MG patients. Taken together, both functional and numerical defects in various populations of immunoregulatory cells in EAMG and human MG have been demonstrated, but how they relate to pathogenesis and whether these cells can serve as biomarkers of disease activity in humans deserve further exploration.
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Affiliation(s)
- Ying Wu
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Jie Luo
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Oliver A Garden
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, United States
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26
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Regulation of macrophage subsets and cytokine production in leishmaniasis. Cytokine 2020; 147:155309. [PMID: 33334669 DOI: 10.1016/j.cyto.2020.155309] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 09/18/2020] [Accepted: 09/19/2020] [Indexed: 12/14/2022]
Abstract
Macrophages are host cells for parasites of the genus Leishmania where they multiply inside parasitophorous vacuoles. Paradoxically, macrophages are also the cells responsible for killing or controlling parasite growth, if appropriately activated. In this review, we will cover the patterns of macrophage activation and the mechanisms used by the parasite to circumvent being killed. We will highlight the impacts of the vector bite on macrophage activation. Finally, we will discuss the ontogeny of macrophages that are infected by Leishmania spp.
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Mohmmad‐Rezaei M, Arefnezhad R, Ahmadi R, Abdollahpour‐Alitappeh M, Mirzaei Y, Arjmand M, Ferns GA, Bashash D, Bagheri N. An overview of the innate and adaptive immune system in atherosclerosis. IUBMB Life 2020. [DOI: 10.1002/iub.2425] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mina Mohmmad‐Rezaei
- Cellular and Molecular Research Center, Basic Health Sciences Institute Shahrekord University of Medical Sciences Shahrekord Iran
| | - Reza Arefnezhad
- Halal Research Center of IRI, FDA Tehran Iran
- Department of Anatomy, School of Medicine Shiraz University of Medical Sciences Shiraz Iran
| | - Reza Ahmadi
- Clinical Biochemistry Research Center, Basic Health Sciences Institute Shahrekord University of Medical Sciences Shahrekord Iran
| | | | - Yousef Mirzaei
- Department of Biogeosciences, Scientific Research Center Soran University Soran Iraq
| | - Mohammad‐Hassan Arjmand
- Cellular and Molecular Research Center, Basic Health Sciences Institute Shahrekord University of Medical Sciences Shahrekord Iran
- Cancer Research Center Shahrekord University of Medical Sciences Shahrekord Iran
| | - Gordon A. Ferns
- Brighton & Sussex Medical School, Division of Medical Education Sussex United Kingdom
| | - Davood Bashash
- Department of Hematology and Blood Banking, School of Allied Medical Sciences Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Nader Bagheri
- Cellular and Molecular Research Center, Basic Health Sciences Institute Shahrekord University of Medical Sciences Shahrekord Iran
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Ordikhani F, Pothula V, Sanchez-Tarjuelo R, Jordan S, Ochando J. Macrophages in Organ Transplantation. Front Immunol 2020; 11:582939. [PMID: 33329555 PMCID: PMC7734247 DOI: 10.3389/fimmu.2020.582939] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/20/2020] [Indexed: 12/13/2022] Open
Abstract
Current immunosuppressive therapy has led to excellent short-term survival rates in organ transplantation. However, long-term graft survival rates are suboptimal, and a vast number of allografts are gradually lost in the clinic. An increasing number of animal and clinical studies have demonstrated that monocytes and macrophages play a pivotal role in graft rejection, as these mononuclear phagocytic cells recognize alloantigens and trigger an inflammatory cascade that activate the adaptive immune response. Moreover, recent studies suggest that monocytes acquire a feature of memory recall response that is associated with a potent immune response. This form of memory is called “trained immunity,” and it is retained by mechanisms of epigenetic and metabolic changes in innate immune cells after exposure to particular ligands, which have a direct impact in allograft rejection. In this review article, we highlight the role of monocytes and macrophages in organ transplantation and summarize therapeutic approaches to promote tolerance through manipulation of monocytes and macrophages. These strategies may open new therapeutic opportunities to increase long-term transplant survival rates in the clinic.
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Affiliation(s)
- Farideh Ordikhani
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Venu Pothula
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Rodrigo Sanchez-Tarjuelo
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Stefan Jordan
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Jordi Ochando
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States.,Immunología de Trasplantes, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain
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29
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Wu Y, Chang YM, Lawson BS, Galban EM, Mittelman NS, Benedicenti L, Petesch SC, Carroll AB, Punt JA, Luo J, Garden OA. Myeloid-derived suppressor cell and regulatory T cell frequencies in canine myasthenia gravis: A pilot study. Vet J 2020; 267:105581. [PMID: 33375962 DOI: 10.1016/j.tvjl.2020.105581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 11/15/2020] [Accepted: 11/23/2020] [Indexed: 01/21/2023]
Abstract
Myasthenia gravis (MG) is a T cell-dependent, B cell-mediated autoimmune disease. Little is known about its cellular pathogenesis in dogs. This study provides the first preliminary assessment of the frequency of myeloid-derived suppressor cells (MDSCs) and regulatory T cells (Tregs) in the peripheral blood of dogs with seropositive generalized MG. No alteration in frequency of either MDSCs or Tregs in dogs with MG was observed when compared to those in either seronegative dogs with diagnoses other than MG, or healthy dogs. A longitudinal study in three dogs with MG revealed no correlation between the relative numbers of either population and the clinical course of disease. Neither the frequency of MDSCs nor of Tregs showed a correlation with anti-AChR antibody titer in dogs with MG. These findings suggest that aberrations in the frequency of either immunosuppressive population do not occur in MG, but they need to be validated in large-scale prospective studies.
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Affiliation(s)
- Ying Wu
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Yu-Mei Chang
- Research Support Office, Royal Veterinary College, London NW1 0TU, UK
| | - Brandon S Lawson
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Evelyn M Galban
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Neil S Mittelman
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Leontine Benedicenti
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Scott C Petesch
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Alicia B Carroll
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Jennifer A Punt
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Jie Luo
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Oliver A Garden
- Department of Clinical Sciences and Advanced Medicine, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
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Characterization of mRNA Profiles of Exosomes from Diverse Forms of M2 Macrophages. BIOMED RESEARCH INTERNATIONAL 2020; 2020:1585306. [PMID: 33299857 PMCID: PMC7704128 DOI: 10.1155/2020/1585306] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 11/09/2020] [Accepted: 11/12/2020] [Indexed: 12/18/2022]
Abstract
Exosomes transmit certain amounts of molecules to specific recipient cells for intercellular communication. Among these molecules, messenger RNAs (mRNAs) may be delivered and translated into proteins in the recipient cells, and these mRNAs are thought to be critical mediators of exosomal functions. There are three subtypes of M2 macrophages (M2Ф), M2aФ, M2bФ, and M2cФ, which have different specific functional programs. The aim of the present study was to screen the mRNA profiles in the exosomes of these macrophage subtypes and to analyze the transcriptomic profile features associated with their specific functions. The mRNA contents of the exosomes isolated from the culture supernatants of the M2Ф subtypes were analyzed and compared using the Illumina HiSeq platform. The results indicated that the exosomes contained particular mRNAs from their source cells and were messengers of cellular functions. Bioinformatics analysis suggested that the exosomal mRNAs from M2bФs are enriched in the Toll-like receptor (TLR), tumor necrosis factor (TNF), NOD-like receptor (NLR), and NF-kappa B (NF-κB) signaling pathways. The mRNA profile of exosomes from M2bФ was distinctly different from that of exosomes from M2aФ and M2cФ and was consistent with the M2bФ cytological characteristic of maintaining a high level of proinflammatory cytokine and regulatory factor production. Therefore, the mRNA profiles revealed several characteristics of the exosomes from diverse forms of M2Ф. Further functional investigations based on these results may advance the understanding of the physiological roles of exosome-transferred mRNAs in MФ functions.
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Reis NFDC, Dupin TV, Costa CR, Toledo MDS, de Oliveira VC, Popi AF, Torrecilhas AC, Xander P. Leishmania amazonensis Promastigotes or Extracellular Vesicles Modulate B-1 Cell Activation and Differentiation. Front Cell Infect Microbiol 2020; 10:573813. [PMID: 33194814 PMCID: PMC7662559 DOI: 10.3389/fcimb.2020.573813] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/28/2020] [Indexed: 12/15/2022] Open
Abstract
B-1 cells are considered an innate-like B cell population that participates in effective innate and adaptive responses to pathogens. B-1 cells produce immunoglobulins, cytokines, chemokines, migrate to inflammatory sites, and differentiate into mononuclear phagocyte-like cells. Murine B-1 cells phagocytosed Leishmaniain vitro and in vivo and participate in immunity against Leishmania. Our group showed that B-1 cells or their extracellular vesicles (EVs) led to a resistance to experimental infection by L. amazonensis. However, the B-1 cells’ responses to Leishmania or EVs isolated from parasites are still poorly characterized. Studying the activation and differentiation of B-1 cells in vivo can contribute to a better understanding of how these cells participate in immunity to L. amazonensis. Thus, we evaluated the expression of myeloid (M-csfr, G-csfr, Spi-1) and lymphoid (EBF, E2A, IL-7R) lineage commitment factors, Toll-like receptors (TLRs), activation cell surface markers, nitric oxide (NO) and reactive oxygen species (ROS) production in murine peritoneal B-1 cells collected after 24 or 48 h post-infection with Leishmania (Leishmania) amazonensis promastigotes or EVs released by the parasites. Our results demonstrated that L. amazonensis infection did not stimulate the expression of CD40, CD80, CD86, F4/80, and MHC II in B-1 cells, but a significant decrease in the production of NO and ROS was observed. The infection induced a significantly higher arginase expression in B-1 cells, but the stimulation with EVs led to a decrease in this gene expression. TLR-2 and TLR-6 had significantly higher expression in B-1 cells from mice intraperitoneally stimulated with the parasite. The TLR-9 expression was higher in animals infected or stimulated for 48 h with EVs. Interestingly, in B-1 cells the stimulus with L. amazonensis led to a substantial increase in the expression of myeloid restricted transcription factors. Thus, our study suggests that the parasites or EVs differently modulated the activation and differentiation of B-1 cells.
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Affiliation(s)
- Natasha Ferraz de Campos Reis
- Laboratory of Cellular Immunology and Biochemistry of Fungi and Protozoa, Department of Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, Brazil
| | - Talita Vieira Dupin
- Laboratory of Cellular Immunology and Biochemistry of Fungi and Protozoa, Department of Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, Brazil
| | - Carolina Rizzaro Costa
- Laboratory of Cellular Immunology and Biochemistry of Fungi and Protozoa, Department of Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, Brazil
| | - Maytê Dos Santos Toledo
- Laboratory of Cellular Immunology and Biochemistry of Fungi and Protozoa, Department of Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, Brazil
| | - Vivian Cristina de Oliveira
- Department of Microbiology, Immunology and Parasitology, Paulista School of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | - Ana Flavia Popi
- Department of Microbiology, Immunology and Parasitology, Paulista School of Medicine, Federal University of São Paulo, São Paulo, Brazil
| | - Ana Claudia Torrecilhas
- Laboratory of Cellular Immunology and Biochemistry of Fungi and Protozoa, Department of Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, Brazil
| | - Patricia Xander
- Laboratory of Cellular Immunology and Biochemistry of Fungi and Protozoa, Department of Pharmaceutical Sciences, Federal University of São Paulo, São Paulo, Brazil
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Yue Y, Huang S, Li H, Li W, Hou J, Luo L, Liu Q, Wang C, Yang S, Lv L, Shao J, Wu Z. M2b macrophages protect against myocardial remodeling after ischemia/reperfusion injury by regulating kinase activation of platelet-derived growth factor receptor of cardiac fibroblast. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1409. [PMID: 33313154 PMCID: PMC7723613 DOI: 10.21037/atm-20-2788] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background Myocardial injury is a major cause of myocardial remodeling. Macrophages are important in cardiac repair as a result of their interactions with fibroblasts. As regulatory macrophages, M2b macrophages modulate inflammatory immune responses without participating in wound healing and could have enhanced protective effects on myocardial remodeling. Therefore, we tested the hypothesis that M2b macrophages could improve cardiac function and ameliorate myocardial fibrosis after the myocardial ischemia/reperfusion injury (MI/RI). Methods In vivo, MI/RI models were established with Sprague-Dawley (SD) rats and either M2b macrophages (MT group) or the same volume of vehicle (CK group) was injected into the ischemic zone. Two weeks after the operation, cardiac function and diameters were determined by echocardiography examination. Level of myocardial fibrosis was measured by Sirius red staining and the expression of fibrosis-related factors. In vitro, cardiac fibroblasts (CFs) were co-cultured with M2b macrophages or cultured with M2b macrophage supernatant. Expression of α-smooth muscle actin (α-SMA) and connective tissue growth factor (CCN2/CTGF) in the CFs were measured by western blotting and immunofluorescence staining. In addition, the expression of platelet-derived growth factors (PDGFs), the expression of platelet-derived growth factor receptors (PDGFRs) and the phosphorylation of PDGFRs was detected by western blotting. Results A significantly higher rat survival rate, improved left ventricular (LV) systolic function, decreased diameter of the LV and alleviated myocardial fibrosis were observed in the MT group than in the CK group. In vitro, the activation of CFs was significantly reduced by the M2b macrophages treatments, relative to the blank control. In addition, the kinase activation of PDGFRs was decreased by M2b macrophage treatments both in vivo and in vitro. Conclusions Our study demonstrated that the administration of M2b macrophages could attenuate myocardial remodeling after MI/RI. The regulation of the activation of PDGFRs in CFs is an important part of the protective mechanism.
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Affiliation(s)
- Yuan Yue
- Department of Cardiac Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
| | - Suiqing Huang
- Department of Cardiac Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Huayang Li
- Department of Cardiac Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wei Li
- Department of Medical Ultrasound, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jian Hou
- Department of Cardiac Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Li Luo
- Department of Cardiac Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Quan Liu
- Department of Cardiac Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Cuiping Wang
- Department of Cardiothoracic Surgery ICU, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Song Yang
- Department of Cardiothoracic Surgery ICU, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Linhua Lv
- Department of Cardiac Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Jinghua Shao
- Out-Patient Department, Shenxian Second People's Hospital, Shenxian, China
| | - Zhongkai Wu
- Department of Cardiac Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.,NHC Key Laboratory of Assisted Circulation, Sun Yat-sen University, Guangzhou, China
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Xiao MZ, Liu JM, Xian CL, Chen KY, Liu ZQ, Cheng YY. Therapeutic potential of ALKB homologs for cardiovascular disease. Biomed Pharmacother 2020; 131:110645. [PMID: 32942149 DOI: 10.1016/j.biopha.2020.110645] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/05/2020] [Accepted: 08/16/2020] [Indexed: 02/06/2023] Open
Abstract
Cardiovascular diseases (CVDs) are the leading causes of human death. Recently, ALKB homologs, including ALKBH1-8 and FTO, have been found to have a variety of biological functions, such as histone demethylation, RNA demethylation, and DNA demethylation. These functions may regulate the physiological and pathological processes of CVDs, including inflammation, oxidative stress, cell apoptosis, and mitochondrial, endothelial, and fat metabolism dysfunction. In the present review, we summarize the biological functions of ALKB homologs and the relationship between the ALKB homologs and CVDs. Importantly, we discuss the roles of ALKB homologs in the regulation of oxidative stress, inflammation, autophagy, and DNA damage in CVDs, as well as the practical applications of ALKB homologs inhibitors or agonists in treating CVDs. In conclusion, the ALKBH family might be a promising target for CVDs therapy.
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Affiliation(s)
- Ming-Zhu Xiao
- Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China; School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Jia-Ming Liu
- Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China; School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Cui-Ling Xian
- Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China; School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Keng-Yu Chen
- Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China; The Second Affiliated Hospital of Guangdong Pharmaceutical University, Yunfu, 527300, China
| | - Zhong-Qiu Liu
- Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China.
| | - Yuan-Yuan Cheng
- Guangdong Key Laboratory for Translational Cancer Research of Chinese Medicine, Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, School of Pharmaceutical Science, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China.
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Indumathy S, Pueschl D, Klein B, Fietz D, Bergmann M, Schuppe HC, Da Silva N, Loveland BE, Hickey MJ, Hedger MP, Loveland KL. Testicular immune cell populations and macrophage polarisation in adult male mice and the influence of altered activin A levels. J Reprod Immunol 2020; 142:103204. [PMID: 33130539 DOI: 10.1016/j.jri.2020.103204] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 07/28/2020] [Accepted: 09/02/2020] [Indexed: 12/12/2022]
Abstract
Detailed morphological characterization of testicular leukocytes in the adult CX3CR1 gfp/+ transgenic mouse identified two distinct CX3CR1 + mononuclear phagocyte (macrophage and dendritic cell) populations: stellate/dendriform cells opposed to the seminiferous tubules (peritubular), and polygonal cells associated with Leydig cells (interstitial). Using confocal microscopy combined with stereological enumeration of CX3CR1gfp/+ cells established that there were twice as many interstitial cells (68%) as peritubular cells (32%). Flow cytometric analyses of interstitial cells from mechanically-dissociated testes identified multiple mononuclear phagocyte subsets based on surface marker expression (CX3CR1, F4/80, CD11c). These cells comprised 80% of total intratesticular leukocytes, as identified by CD45 expression. The remaining leukocytes were CD3+ (T lymphocytes) and NK1.1+ (natural killer cells). Functional phenotype assessment using CD206 (an anti-inflammatory/M2 marker) and MHC class II (an activation marker) identified a potentially tolerogenic CD206+MHCII+ sub-population (12% of total CD45+ cells). Rare testicular subsets of CX3CR1 +CD11c+F4/80+ (4.3%) mononuclear phagocytes and CD3+NK1.1+ (3.1%) lymphocytes were also identified for the first time. In order to examine the potential for the immunoregulatory cytokine, activin A to modulate testicular immune cell populations, testes from adult mice with reduced activin A (Inhba+/-) or elevated activin A (Inha+/-) were assessed using flow cytometry. Although the proportion of F4/80+CD11b+ leukocytes (macrophages) was not affected, the frequency of CD206+MHCII+cells was significantly lower and CD206+MHCII- correspondingly higher in Inha+/- testes. This shift in expression of MHCII in CD206+ macrophages indicates that changes in circulating and/or local activin A influence resident macrophage activation and phenotype and, therefore, the immunological environment of the testis.
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Affiliation(s)
- S Indumathy
- Centre for Reproductive Health, Hudson Institute of Medical Research, Victoria, Australia; Department of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University, Giessen, Germany; Department of Molecular and Translational Sciences, School of Clinical Sciences, Monash University, Victoria, Australia.
| | - D Pueschl
- Centre for Reproductive Health, Hudson Institute of Medical Research, Victoria, Australia; Department of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University, Giessen, Germany; Department of Molecular and Translational Sciences, School of Clinical Sciences, Monash University, Victoria, Australia
| | - B Klein
- Centre for Reproductive Health, Hudson Institute of Medical Research, Victoria, Australia; Department of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University, Giessen, Germany
| | - D Fietz
- Department of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University, Giessen, Germany
| | - M Bergmann
- Department of Veterinary Anatomy, Histology and Embryology, Justus-Liebig-University, Giessen, Germany
| | - H-C Schuppe
- Clinic of Urology, Pediatric Urology and Andrology, Justus-Liebig-University, Giessen, Germany
| | - N Da Silva
- Ohana Biosciences, Cambridge, Massachusetts, United States
| | | | - M J Hickey
- Centre for Inflammatory Diseases, Department of Medicine, Monash Medical Centre, Monash University, Victoria, Australia
| | - M P Hedger
- Centre for Reproductive Health, Hudson Institute of Medical Research, Victoria, Australia; Department of Molecular and Translational Sciences, School of Clinical Sciences, Monash University, Victoria, Australia
| | - K L Loveland
- Centre for Reproductive Health, Hudson Institute of Medical Research, Victoria, Australia; Department of Molecular and Translational Sciences, School of Clinical Sciences, Monash University, Victoria, Australia.
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Moreira Lopes TC, Mosser DM, Gonçalves R. Macrophage polarization in intestinal inflammation and gut homeostasis. Inflamm Res 2020; 69:1163-1172. [PMID: 32886145 DOI: 10.1007/s00011-020-01398-y] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 07/21/2020] [Accepted: 08/30/2020] [Indexed: 12/19/2022] Open
Abstract
Gut homeostasis is a process that requires a prudent balance of host responses to the beneficial enteric microbial community and the pathogenic stimuli that can arise. The lack of this balance in the intestine can result in inflammatory bowel diseases, where the immune system dysfunctions leading to exacerbated inflammatory responses. In this process, macrophages are considered to play a pivotal role. In this review, we describe the important role of macrophages in maintaining intestinal homeostasis and we discuss how altered macrophage function may lead to inflammatory bowel diseases. The plasticity of macrophages during the gut inflammatory response shows the broad role of these cells in orchestrating not only the onset of inflammation but also its termination as well as healing and repair. Indeed, the state of macrophage polarization can be the key factor in defining the resolution or the progression of inflammation and disease. Here, we discuss the different populations of macrophages and their implication in development, propagation, control and resolution of inflammatory bowel diseases.
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Affiliation(s)
- Tamara Cristina Moreira Lopes
- Laboratório de Biologia de Macrófagos e Monócitos, Departamento de Patologia Geral, Instituto de Ciências Biológicas-Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil
| | - David M Mosser
- Department of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD, USA
| | - Ricardo Gonçalves
- Laboratório de Biologia de Macrófagos e Monócitos, Departamento de Patologia Geral, Instituto de Ciências Biológicas-Universidade Federal de Minas Gerais (UFMG), Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil.
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Gurvich OL, Puttonen KA, Bailey A, Kailaanmäki A, Skirdenko V, Sivonen M, Pietikäinen S, Parker NR, Ylä-Herttuala S, Kekarainen T. Transcriptomics uncovers substantial variability associated with alterations in manufacturing processes of macrophage cell therapy products. Sci Rep 2020; 10:14049. [PMID: 32820219 PMCID: PMC7441152 DOI: 10.1038/s41598-020-70967-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 08/04/2020] [Indexed: 11/23/2022] Open
Abstract
Gene expression plasticity is central for macrophages' timely responses to cues from the microenvironment permitting phenotypic adaptation from pro-inflammatory (M1) to wound healing and tissue-regenerative (M2, with several subclasses). Regulatory macrophages are a distinct macrophage type, possessing immunoregulatory, anti-inflammatory, and angiogenic properties. Due to these features, regulatory macrophages are considered as a potential cell therapy product to treat clinical conditions, e.g., non-healing diabetic foot ulcers. In this study we characterized two differently manufactured clinically relevant regulatory macrophages, programmable cells of monocytic origin and comparator macrophages (M1, M2a and M0) using flow-cytometry, RT-qPCR, phagocytosis and secretome measurements, and RNA-Seq. We demonstrate that conventional phenotyping had a limited potential to discriminate different types of macrophages which was ameliorated when global transcriptome characterization by RNA-Seq was employed. Using this approach we confirmed that macrophage manufacturing processes can result in a highly reproducible cell phenotype. At the same time, minor changes introduced in manufacturing resulted in phenotypically and functionally distinct regulatory macrophage types. Additionally, we have identified a novel constellation of process specific biomarkers, which will support further clinical product development.
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Affiliation(s)
- Olga L Gurvich
- Kuopio Center for Gene and Cell Therapy, Microkatu 1S, 70210, Kuopio, Finland
| | - Katja A Puttonen
- Kuopio Center for Gene and Cell Therapy, Microkatu 1S, 70210, Kuopio, Finland
| | - Aubrey Bailey
- Kuopio Center for Gene and Cell Therapy, Microkatu 1S, 70210, Kuopio, Finland
| | - Anssi Kailaanmäki
- Kuopio Center for Gene and Cell Therapy, Microkatu 1S, 70210, Kuopio, Finland
| | - Vita Skirdenko
- Kuopio Center for Gene and Cell Therapy, Microkatu 1S, 70210, Kuopio, Finland
| | - Minna Sivonen
- Kuopio Center for Gene and Cell Therapy, Microkatu 1S, 70210, Kuopio, Finland
| | - Sanna Pietikäinen
- Kuopio Center for Gene and Cell Therapy, Microkatu 1S, 70210, Kuopio, Finland
| | - Nigel R Parker
- A.I. Virtanen Institute, University of Eastern Finland, 70211, Kuopio, Finland
| | - Seppo Ylä-Herttuala
- A.I. Virtanen Institute, University of Eastern Finland, 70211, Kuopio, Finland
| | - Tuija Kekarainen
- Kuopio Center for Gene and Cell Therapy, Microkatu 1S, 70210, Kuopio, Finland.
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Qiao N, Lin Y, Wang Z, Chen JY, Ge YY, Yao SL, Gong J. Maresin1 Promotes M2 Macrophage Polarization Through Peroxisome Proliferator-Activated Receptor-γ Activation to Expedite Resolution of Acute Lung Injury. J Surg Res 2020; 256:584-594. [PMID: 32805581 DOI: 10.1016/j.jss.2020.06.062] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 05/28/2020] [Accepted: 06/16/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Acute lung injury (ALI), manifested by progressive hypoxemia and respiratory distress, is associated with high morbidity and mortality, which lacks the effective therapies in clinics. Our previous studies demonstrated that maresin1 (MaR1), a specialized proresolving mediator, could effectively mitigate the inflammation of lipopolysaccharide (LPS)-induced ALI. However, whether MaR1 impacts the macrophage polarization to alleviate ALI remains unclear. Our study explored the effects and underlying mechanisms of MaR1 on the macrophage phenotypes in ALI. MATERIAL AND METHODS Male BALB/c mice were subjected to endotracheal instillation of LPS to induce ALI and then intravenously injected with MaR1 or normal saline. Intraperitoneal administration of peroxisome proliferator-activated receptor-γ (PPAR-γ) inhibitor GW9662 was given 30 mins before MaR1. We measured the pathohistologic changes, pulmonary edema, inflammatory cytokines, and the flow cytometry of macrophage phenotypes. RESULTS Our results illustrated that MaR1 ameliorated lung injury and increased monocyte or macrophage recruitment and the release of anti-inflammatory cytokines. The flow cytometry showed that MaR1 promoted polarization of CD11c-CD206+ (M2) macrophages and inhibited polarization of CD11c+CD206- (M1) macrophages. Besides, the western blotting revealed that MaR1 increased the expression of PPAR-γ. The pretreatment with PPAR-γ antagonist GW9662 could significantly suppress the polarization of M2 macrophages and antagonize the protective effects of MaR1 on LPS-stimulated ALI. CONCLUSIONS MaR1 was able to promote M2 macrophage polarization by reversing LPS-mediated PPAR-γ inhibition, thereby expediting the recovery of LPS-stimulated ALI.
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Affiliation(s)
- Nan Qiao
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yun Lin
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhe Wang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia-Yi Chen
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yang-Yang Ge
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shang-Long Yao
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jie Gong
- Institute of Anesthesiology and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; The First Clinical College, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Fujimura R, Watanabe H, Nishida K, Fujiwara Y, Koga T, Bi J, Imafuku T, Kobayashi K, Komori H, Miyahisa M, Maeda H, Tanaka M, Matsushita K, Wada T, Fukagawa M, Maruyama T. α 1-Acid Glycoprotein Attenuates Adriamycin-Induced Nephropathy via CD163 Expressing Macrophage Induction. KIDNEY360 2020; 1:343-353. [PMID: 35369369 PMCID: PMC8809281 DOI: 10.34067/kid.0000782019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/12/2020] [Indexed: 06/14/2023]
Abstract
BACKGROUND Recent clinical studies have shown that proteinuria is a critical factor in the progression of CKD and onset of cardiovascular disease. Inflammation and infiltration of macrophages into renal tissue are implicated as causes of proteinuria. α1-Acid glycoprotein (AGP), an acute-phase plasma protein, is leaked into the urine in patients with proteinuria. However, the relationship between urinary leakage of AGP, renal inflammation, and proteinuria remains unclear. METHODS Human AGP (hAGP) was exogenously administrated for 5 consecutive days to adriamycin-induced nephropathy model mice. RESULTS Adriamycin treatment increased urinary AGP, accompanied by decreased plasma AGP in mice. Exogenous hAGP administration to adriamycin-treated mice suppressed proteinuria, renal histologic injury, and inflammation. hAGP administration increased renal CD163 expression, a marker of anti-inflammatory macrophages. Similar changes were observed in PMA-differentiated THP-1 cells treated with hAGP. Even in the presence of LPS, hAGP treatment increased CD163/IL-10 expression in differentiated THP-1 cells. CONCLUSIONS AGP alleviates proteinuria and renal injury in mice with proteinuric kidney disease via induction of CD163-expressing macrophages with anti-inflammatory function. The results demonstrate that endogenous AGP could work to protect against glomerular disease. Thus, AGP supplementation could be a possible new therapeutic intervention for patients with glomerular disease.
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Affiliation(s)
- Rui Fujimura
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
- Program for Leading Graduate Schools “HIGO (Health life science: Interdisciplinary and Global Oriented) Program,” Kumamoto University, Kumamoto, Japan
| | - Hiroshi Watanabe
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kento Nishida
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Yukio Fujiwara
- Department of Cell Pathology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Tomoaki Koga
- Department of Medical Cell Biology, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto, Japan
| | - Jing Bi
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
- Program for Leading Graduate Schools “HIGO (Health life science: Interdisciplinary and Global Oriented) Program,” Kumamoto University, Kumamoto, Japan
| | - Tadashi Imafuku
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
- Program for Leading Graduate Schools “HIGO (Health life science: Interdisciplinary and Global Oriented) Program,” Kumamoto University, Kumamoto, Japan
| | - Kazuki Kobayashi
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hisakazu Komori
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Masako Miyahisa
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hitoshi Maeda
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
| | - Motoko Tanaka
- Department of Nephrology, Akebono Clinic, Kumamoto, Japan
| | | | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Masafumi Fukagawa
- Division of Nephrology, Endocrinology and Metabolism, Tokai University School of Medicine, Kanagawa, Japan
| | - Toru Maruyama
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan
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Yue Y, Huang S, Wang L, Wu Z, Liang M, Li H, Lv L, Li W, Wu Z. M2b Macrophages Regulate Cardiac Fibroblast Activation and Alleviate Cardiac Fibrosis After Reperfusion Injury. Circ J 2020; 84:626-635. [PMID: 32161201 DOI: 10.1253/circj.cj-19-0959] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Macrophages play an important role in the development of cardiac fibrosis. However, the roles of different macrophage subtypes in cardiac fibroblast (CF) activation and cardiac fibrosis are unknown.Methods and Results:Bone marrow-derived macrophages (BMDMs) were treated with different stimuli to induce differentiation into M1, M2a, M2b, and M2c macrophage subtypes. CFs were co-cultured with different subtypes of macrophages or cultured with macrophage supernatants. Results revealed that M2b macrophages significantly suppressed the proliferation and migration of CFs, the expression of fibrosis-related proteins (collagen I [COL-1] and α-smooth muscle actin [α-SMA]), and differentiation into cardiac myofibroblasts (MFs). The opposite effects were observed with M2a macrophages. A rat model of cardiac ischemia/reperfusion (I/R) injury was used to determine the effect of M2b macrophages transplantation. After cardiac I/R injury, transplantation of M2b macrophages improved cardiac function and reduced cardiac fibrosis. The effect of macrophage subtypes on p-ERK, ERK, p-p38, and p38 phosphorylation was examined by Western blotting. The results showed that M2b macrophages significantly inhibited the mitogen-activated protein kinase (MAPK) signaling pathway. CONCLUSIONS These study results demonstrate for the first time that different subtypes of macrophages have different roles in regulating CF activation. M2b macrophages inhibit CF activation, and thus can be considered anti-fibrotic macrophages. M2a macrophages promote CF activation, and thus are pro-fibrotic macrophages.
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Affiliation(s)
- Yuan Yue
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-Sen University.,NHC Key Laboratory of Assisted Circulation, Sun Yat-Sen University
| | - Suiqing Huang
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-Sen University
| | - Lexun Wang
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University
| | - Zixuan Wu
- Division of Organ Transplantation, The First Affiliated Hospital of Sun Yat-Sen University
| | - Mengya Liang
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-Sen University
| | - Huayang Li
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-Sen University
| | - Linhua Lv
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-Sen University
| | - Wei Li
- Department of Medical Ultrasound, The First Affiliated Hospital of Sun Yat-Sen University
| | - Zhongkai Wu
- Department of Cardiac Surgery, The First Affiliated Hospital of Sun Yat-Sen University.,NHC Key Laboratory of Assisted Circulation, Sun Yat-Sen University
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40
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Salminen A. Activation of immunosuppressive network in the aging process. Ageing Res Rev 2020; 57:100998. [PMID: 31838128 DOI: 10.1016/j.arr.2019.100998] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/29/2019] [Accepted: 12/09/2019] [Indexed: 12/19/2022]
Abstract
Chronic low-grade inflammation has a key role in the aging process, a state called inflammaging. It is known that the chronic inflammatory condition generates counteracting immunosuppressive state in many diseases. Inflammaging is also associated with an immune deficiency; generally termed as immunosenescence, although it is not known whether it represents the senescence of immune cells or the active remodeling of immune system. Evidence has accumulated since the 1970's indicating that immunosenescence might be caused by an increased activity of immunosuppressive cells rather than cellular senescence. Immune cells display remarkable plasticity; many of these cells can express both proinflammatory and immunosuppressive phenotypes in a context-dependent manner. The immunosuppressive network involves the regulatory subtypes of T (Treg) and B (Breg) cells as well as regulatory phenotypes of macrophages (Mreg), dendritic (DCreg), natural killer (NKreg), and type II natural killer T (NKT) cells. The immunosuppressive network also includes monocytic (M-MDSC) and polymorphonuclear (PMN-MDSC) myeloid-derived suppressor cells which are immature myeloid cells induced by inflammatory mediators. This co-operative network is stimulated in chronic inflammatory conditions preventing excessive inflammatory responses but at the same time they exert harmful effects on the immune system and tissue homeostasis. Recent studies have revealed that the aging process is associated with the activation of immunosuppressive network, especially the functions of MDSCs, Tregs, and Mregs are increased. I will briefly review the properties of the regulatory phenotypes of immune cells and examine in detail the evidences for an activation of immunosuppressive network with aging.
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41
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Yu S, Su C, Luo X. Impact of infection on transplantation tolerance. Immunol Rev 2019; 292:243-263. [PMID: 31538351 PMCID: PMC6961566 DOI: 10.1111/imr.12803] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/29/2019] [Accepted: 09/03/2019] [Indexed: 12/12/2022]
Abstract
Allograft tolerance is the ultimate goal of organ transplantation. Current strategies for tolerance induction mainly focus on inhibiting alloreactive T cells while promoting regulatory immune cells. Pathogenic infections may have direct impact on both effector and regulatory cell populations, therefore can alter host susceptibility to transplantation tolerance induction as well as impair the quality and stability of tolerance once induced. In this review, we will discuss existing data demonstrating the effect of infections on transplantation tolerance, with particular emphasis on the role of the stage of infection (acute, chronic, or latent) and the stage of tolerance (induction or maintenance) in this infection-tolerance interaction. While the deleterious effect of acute infection on tolerance is mainly driven by proinflammatory cytokines induced shortly after the infection, chronic infection may generate exhausted T cells that could in fact facilitate transplantation tolerance. In addition to pathogenic infections, commensal intestinal microbiota also has numerous significant immunomodulatory effects that can shape the host alloimmunity following transplantation. A comprehensive understanding of these mechanisms is crucial for the development of therapeutic strategies for robustly inducing and stably maintaining transplantation tolerance while preserving host anti-pathogen immunity in clinically relevant scenarios.
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Affiliation(s)
- Shuangjin Yu
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC 27710, United States
- Division of Organ transplantation, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510080, China
| | - Chang Su
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC 27710, United States
| | - Xunrong Luo
- Division of Nephrology, Department of Medicine, Duke University School of Medicine, Durham, NC 27710, United States
- Duke Transplant Center, Duke University School of Medicine, Durham, NC 27710, United States
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42
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Li R, Shang Y, Hu X, Yu Y, Zhou T, Xiong W, Zou X. ATP/P2X7r axis mediates the pathological process of allergic asthma by inducing M2 polarization of alveolar macrophages. Exp Cell Res 2019; 386:111708. [PMID: 31682811 DOI: 10.1016/j.yexcr.2019.111708] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 10/30/2019] [Indexed: 12/20/2022]
Abstract
Recent studies revealed that macrophages are polarized towards the M2 phenotype in an ovalbumin (OVA)-induced asthmatic model. Alveolar macrophages (AMs) are immune barriers in alveoli to various pathogens in the respiratory tract; AMs suppress Th2 cell proliferation, inhibit interleukin (IL)-4, IL-5, and IL-13 secretion, and protect against airway hyperresponsiveness in allergic asthma. However, the polarization status and effects of different types of AMs in the pathogenesis of asthma are not known. ATP/P2X7r, expressed mainly on macrophages and dendritic cells, is associated with acute and chronic asthmatic airway inflammation and Th2 immune responses in mice and humans and functions by activating the NLRP3 inflammasome complex and inducing proinflammatory cytokine release (IL-1β and IL-18). Therefore, we evaluated the association between the ATP/P2X7r axis and different types of AMs in the pathology of allergic asthma. A murine AM-depleted asthma model was established by administration of clodronate-encapsulated liposomes, and M1-or M2-AMs were adoptively transferred to confirm the effects of different AMs in allergic asthma. Brilliant Blue G and BzATP were administered to OVA/HDM-induced mice in vivo. Lipopolysaccharide + OVA, ATP, Brilliant Blue G, and BzATP were used to stimulate AMs isolated from control and asthmatic mice. We found that selective depletion of AMs aggravated lung inflammation in asthmatic mice. Further, M2-type AMs may play a key role in mediating asthmatic inflammatory responses via the adoptive transfer of M2-type AMs to AM-depleted asthmatic mice, and the phenotype of AMs differentiated to M2 type in asthma. P2X7r expression in M2-type AMs was higher than that in M1-type AMs. Activating P2X7r induced polarization of M2-type AMs and inhibited polarization of M1-type AMs, while blockage of P2X7r had the opposite effect. The ATP/P2X7r axis may participate in the pathogenesis of asthma by mediating the M2-type AM polarization.
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Affiliation(s)
- Ruiting Li
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China
| | - You Shang
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China
| | - Xuemei Hu
- Department of Nephrology, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, PR China
| | - Yuan Yu
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China
| | - Ting Zhou
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China
| | - Wei Xiong
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China
| | - Xiaojing Zou
- Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China.
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More than an Anti-diabetic Bariatric Surgery, Metabolic Surgery Alleviates Systemic and Local Inflammation in Obesity. Obes Surg 2019; 28:3658-3668. [PMID: 30187424 DOI: 10.1007/s11695-018-3400-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Obesity, associated with increased risk of type 2 diabetes (T2D), cardiovascular disease, and hepatic steatosis et al., has become a major global health problem. Recently, obesity has been proven to be under a status of low-grade, chronic inflammation, which contributes to insulin resistance and T2D. Bariatric surgery is currently an effective treatment for the control of morbid obesity and T2D, which impels ongoing efforts to clarify physiological and molecular mechanisms mediating these benefits. The correlation between obesity, inflammation, and T2D has been revealed to a certain extent, and studies have shed light on the effect of bariatric surgery on inflammatory status of subjects with obesity. Based on recent findings, this review focuses on the relationship between inflammation, obesity, and bariatric surgery.
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Cao T, Shao S, Fang H, Li B, Wang G. Role of Regulatory Immune Cells and Molecules in Autoimmune Bullous Dermatoses. Front Immunol 2019; 10:1746. [PMID: 31428090 PMCID: PMC6688483 DOI: 10.3389/fimmu.2019.01746] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 07/10/2019] [Indexed: 12/12/2022] Open
Abstract
Autoimmune bullous dermatoses (AIBD) include a series of typical organ-specific autoimmune diseases characterized by extensive mucocutaneous blisters. It is generally accepted to be caused by pathological autoantibodies that directly target specific adhesion components of the skin or the adjacent mucous membranes. Both innate and adaptive immune systems are critically involved in the misguided immune response against self-antigens. Recent studies have indicated that the dysfunction of regulatory T cells, regulatory B cells, and complement regulatory proteins that play essential roles in maintaining a healthy immune environment is also closely related to immune disorders in AIBD. It is important to summarize these studies, elucidate the changes in these regulatory immune cells and molecules for the pathogenesis of AIBD, and reveal the mechanisms by which they lose their ability to regulate immune disorders. In this review, we highlight the role of regulatory immune cells and molecules in the pathogenesis of pemphigus vulgaris and bullous pemphigoid, the two most representative forms of AIBD, and indicate issues that should be addressed in future investigations.
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Affiliation(s)
- Tianyu Cao
- Department of Dermatology, Tangdu Hospital, Fourth Military Medical University, Xi'an, China
| | - Shuai Shao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Hui Fang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Bing Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Arginase-1 and Treg Profile Appear to Modulate Inflammatory Process in Patients with Chronic Gastritis: IL-33 May Be the Alarm Cytokine in H. pylori-Positive Patients. Mediators Inflamm 2019; 2019:2536781. [PMID: 31320834 PMCID: PMC6610761 DOI: 10.1155/2019/2536781] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 02/20/2019] [Accepted: 04/16/2019] [Indexed: 02/07/2023] Open
Abstract
Helicobacter pylori (H. pylori) is a highly prevalent bacterium in our environment, directly involved in various upper digestive tract diseases, such as gastritis, peptic ulcer, and gastric cancer. Several molecules activating the immune system have been reported to be involved in containing H. pylori infection. This study is aimed at analyzing the mRNA expression of the cytokines IFN-γ, IL-17, IL-10, TGF-β, IL-6, IL-22, IL-23, and IL-33; transcription factors T-bet, RORC, and FOXP3; enzymes ARG1, ARG2, and NOS2; and neuropeptides VIP and TAC and their respective receptors VIPR1 and TACR1 in the stomach lining of patients with severe digestive disorders. One hundred and twenty six patients have been evaluated, presenting with symptoms in the upper digestive tract, with the clinical indication for an Upper Digestive Endoscopy exam. Two fragments of the mucosa of the gastric body and antrum have been collected for anatomopathological examination and to analyze the expression of enzymes, cytokines, and transcription factors using qPCR. Expression of the ARG1 gene was seen as significantly higher in the group of patients with chronic inactive gastritis than in the control group. Expression of the TGF-β gene and its FOXP3 transcription factor was significantly higher in the group of chronic inactive gastritis patients than in the control. Expression of IFN-γ, IL-17, IL-10, and TGF-β and the transcription factors, T-bet and RORC, in the presence or absence of H. pylori showed no significant difference. However, the expression of FOXP3 was significantly lower in H. pylori-positive patients than that in H. pylori-negative patients. ARG1 and Treg profile appeared to be modulating the inflammatory process, protecting patients from the tissue lesions with chronic inactive gastritis. Furthermore, we suggest that IL-33 may be a crucial mediator of the immune response against an infection, after gastric mucosal damage.
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Barros MS, Lara PG, Fonseca MT, Moretti EH, Filgueiras LR, Martins JO, Capurro ML, Steiner AA, Sá-Nunes A. Aedes aegypti saliva impairs M1-associated proinflammatory phenotype without promoting or affecting M2 polarization of murine macrophages. Parasit Vectors 2019; 12:239. [PMID: 31097013 PMCID: PMC6524299 DOI: 10.1186/s13071-019-3487-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 05/06/2019] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND During the feeding process, the mouthparts of hematophagous mosquitoes break the skin barrier and probe the host tissue to find the blood. The saliva inoculated in this microenvironment modulates host hemostasis, inflammation and adaptive immune responses. However, the mechanisms involved in these biological activities remain poorly understood and few studies explored the potential roles of mosquito saliva on the individual cellular components of the immune system. Here, we report the immunomodulatory activities of Aedes aegypti salivary cocktail on murine peritoneal macrophages. RESULTS The salivary gland extract (SGE) of Ae. aegypti inhibited the production of nitric oxide and inflammatory cytokines such as interleukin-6 (IL-6) and IL-12, as well as the expression of inducible nitric oxide synthase and NF-κB by murine macrophages stimulated by lipopolysaccharide (LPS) plus interferon-γ (IFN-γ). The spare respiratory capacity, the phagocytic and microbicidal activities of these macrophages were also reduced by Ae. aegypti SGE. These phenotypic changes are consistent with SGE suppressing the proinflammatory program of M1 macrophages. On the other hand, Ae. aegypti SGE did not influence M2-associated markers (urea production, arginase-1 and mannose receptor-1 expression), either in macrophages alternatively activated by IL-4 or in those classically activated by LPS plus IFN-γ. In addition, Ae. aegypti SGE did not display any cytokine-binding activity, nor did it affect macrophage viability, thus excluding supposed experimental artifacts. CONCLUSIONS Given the importance of macrophages in a number of biological processes, our findings help to enlighten how vector saliva modulates vertebrate host immunity.
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Affiliation(s)
- Michele S Barros
- Laboratory of Experimental Immunology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, 05508-000, Brazil
| | - Priscila G Lara
- Laboratory of Experimental Immunology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, 05508-000, Brazil
| | - Monique T Fonseca
- Laboratory of Sepsis Neurobiology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, 05508-000, Brazil
| | - Eduardo H Moretti
- Laboratory of Sepsis Neurobiology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, 05508-000, Brazil
| | - Luciano R Filgueiras
- Laboratory of Immunopharmacology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, 05508-000, Brazil
| | - Joilson O Martins
- Laboratory of Immunoendocrinology, Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, SP, 05508-000, Brazil
| | - Margareth L Capurro
- Laboratory of Genetically Modified Mosquitoes, Department of Parasitology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, 05508-000, Brazil
- National Institute of Science and Technology on Molecular Entomology, National Council for Scientific and Technological Development (INCT-EM/CNPq), Rio de Janeiro, RJ, Brazil
| | - Alexandre A Steiner
- Laboratory of Sepsis Neurobiology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, 05508-000, Brazil
| | - Anderson Sá-Nunes
- Laboratory of Experimental Immunology, Department of Immunology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, 05508-000, Brazil.
- National Institute of Science and Technology on Molecular Entomology, National Council for Scientific and Technological Development (INCT-EM/CNPq), Rio de Janeiro, RJ, Brazil.
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Latour YL, Gobert AP, Wilson KT. The role of polyamines in the regulation of macrophage polarization and function. Amino Acids 2019; 52:151-160. [PMID: 31016375 DOI: 10.1007/s00726-019-02719-0] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 03/04/2019] [Indexed: 01/18/2023]
Abstract
Naturally occurring polyamines are ubiquitously distributed and play important roles in cell development, amino acid and protein synthesis, oxidative DNA damage, proliferation, and cellular differentiation. Macrophages are essential in the innate immune response, and contribute to tissue remodeling. Naïve macrophages have two major potential fates: polarization to (1) the classical pro-inflammatory M1 defense response to bacterial pathogens and tumor cells, and (2) the alternatively activated M2 response, induced in the presence of parasites and wounding, and also implicated in the development of tumor-associated macrophages. ODC, the rate-limiting enzyme in polyamine synthesis, leads to an increase in putrescine levels, which impairs M1 gene transcription. Additionally, spermidine and spermine can regulate translation of pro-inflammatory mediators in activated macrophages. In this review, we focus on polyamines in macrophage activation patterns in the context of gastrointestinal inflammation and carcinogenesis. We seek to clarify mechanisms of innate immune regulation by polyamine metabolism and potential novel therapeutic targets.
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Affiliation(s)
- Yvonne L Latour
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Vanderbilt University School of Medicine, 2215 Garland Avenue, Room 1030C Medical Research Building IV, Nashville, TN, 37232, USA.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alain P Gobert
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Vanderbilt University School of Medicine, 2215 Garland Avenue, Room 1030C Medical Research Building IV, Nashville, TN, 37232, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, USA
| | - Keith T Wilson
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Vanderbilt University School of Medicine, 2215 Garland Avenue, Room 1030C Medical Research Building IV, Nashville, TN, 37232, USA. .,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA. .,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, USA. .,Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA. .,Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA.
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48
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The cAMP Pathway Amplifies Early MyD88-Dependent and Type I Interferon-Independent LPS-Induced Interleukin-10 Expression in Mouse Macrophages. Mediators Inflamm 2019; 2019:3451461. [PMID: 31148944 PMCID: PMC6501241 DOI: 10.1155/2019/3451461] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 01/05/2019] [Accepted: 02/11/2019] [Indexed: 12/20/2022] Open
Abstract
Interleukin-10 (IL-10) is a key anti-inflammatory cytokine, secreted by macrophages and other immune cells to attenuate inflammation. Autocrine type I interferons (IFNs) largely mediate the delayed expression of IL-10 by LPS-stimulated macrophages. We have previously shown that IL-10 is synergistically expressed in macrophages following a costimulus of a TLR agonist and cAMP. We now show that the cAMP pathway directly upregulates IL-10 transcription and plays an important permissive and synergistic role in early, but not late, LPS-stimulated IL-10 mRNA and protein expression in mouse macrophages and in a mouse septic shock model. Our results suggest that the loss of synergism is not due to desensitization of the cAMP inducing signal, and it is not mediated by a positive crosstalk between the cAMP and type I IFN pathways. First, cAMP elevation in LPS-treated cells decreased the secretion of type I IFN. Second, autocrine/paracrine type I IFNs induce IL-10 promoter reporter activity only additively, but not synergistically, with the cAMP pathway. IL-10 promoter reporter activity was synergistically induced by cAMP elevation in macrophages stimulated by an agonist of either TLR4, TLR2/6, or TLR7, receptors which signal via MyD88, but not by an agonist of TLR3 which signals independently of MyD88. Moreover, MyD88 knockout largely reduced the synergistic IL-10 expression, indicating that MyD88 is required for the synergism displayed by LPS with cAMP. This report delineates the temporal regulation of early cAMP-accelerated vs. late type I IFN-dependent IL-10 transcription in LPS-stimulated murine macrophages that can limit inflammation at its onset.
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Okeke EB, Uzonna JE. The Pivotal Role of Regulatory T Cells in the Regulation of Innate Immune Cells. Front Immunol 2019; 10:680. [PMID: 31024539 PMCID: PMC6465517 DOI: 10.3389/fimmu.2019.00680] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 03/12/2019] [Indexed: 12/11/2022] Open
Abstract
The distinction between innate and adaptive immunity is one of the basic tenets of immunology. The co-operation between these two arms of the immune system is a major determinant of the resistance or susceptibility of the host following pathogen invasion. Hence, this interactive co-operation between cells of the innate and adaptive immunity is of significant interest to immunologists. The sub-population of CD4+ T cells with regulatory phenotype (regulatory T cells; Tregs), which constitute a part of the adaptive immune system, have been widely implicated in the regulation of the immune system and maintenance of immune homeostasis. In the last two decades, there has been an explosion in research describing the role of Tregs and their relevance in several immunopathologies ranging from inflammation to cancer. The majority of these studies focus on the role of Tregs on the cells of the adaptive immune system. Recently, there is significant interest in the role of Tregs on cells of the innate immune system. In this review, we examine the literature on the role of Tregs in immunology. Specifically, we focus on the emerging knowledge of Treg interaction with dendritic cells, macrophages, neutrophils, and γδ T cells. We highlight this interaction as an important link between innate and adaptive immune systems which also indicate the far-reaching role of Tregs in the regulation of immune responses and maintenance of self-tolerance and immune homeostasis.
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Affiliation(s)
- Emeka B Okeke
- Department of Pharmaceutical Sciences, University of Michigan, Ann Arbor, MI, United States
| | - Jude E Uzonna
- Department of Immunology, Faculty of Medicine, University of Manitoba, Winnipeg, MB, Canada
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50
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Chan MWY, Viswanathan S. Recent progress on developing exogenous monocyte/macrophage-based therapies for inflammatory and degenerative diseases. Cytotherapy 2019; 21:393-415. [PMID: 30871899 DOI: 10.1016/j.jcyt.2019.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 02/04/2019] [Accepted: 02/13/2019] [Indexed: 12/14/2022]
Abstract
Cell-based therapies are a rapidly developing area of regenerative medicine as dynamic treatments that execute therapeutic functions multimodally. Monocytes and macrophages, as innate immune cells that control inflammation and tissue repair, are increasing popular clinical candidates due to their spectrum of functionality. In this article, we review the role of monocytes and macrophages specifically in inflammatory and degenerative disease pathology and the evidence supporting the use of these cells as an effective therapeutic strategy. We compare current strategies of exogenously polarized monocyte/macrophage therapies regarding dosage, delivery and processing to identify outcomes, advances and challenges to their clinical use. Monocytes/macrophages hold the potential to be a promising therapeutic avenue but understanding and optimization of disease-specific efficacy is needed to accelerate their clinical use.
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Affiliation(s)
- Mable Wing Yan Chan
- Arthritis Program, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Sowmya Viswanathan
- Arthritis Program, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada; Cell Therapy Program, University Health Network, Toronto, Ontario, Canada; Division of Hematology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada.
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