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Horvat Mercnik M, Schliefsteiner C, Sanchez-Duffhues G, Wadsack C. TGFβ signalling: a nexus between inflammation, placental health and preeclampsia throughout pregnancy. Hum Reprod Update 2024; 30:442-471. [PMID: 38519450 PMCID: PMC11215164 DOI: 10.1093/humupd/dmae007] [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: 10/18/2023] [Revised: 02/16/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND The placenta is a unique and pivotal organ in reproduction, controlling crucial growth and cell differentiation processes that ensure a successful pregnancy. Placental development is a tightly regulated and dynamic process, in which the transforming growth factor beta (TGFβ) superfamily plays a central role. This family of pleiotropic growth factors is heavily involved in regulating various aspects of reproductive biology, particularly in trophoblast differentiation during the first trimester of pregnancy. TGFβ signalling precisely regulates trophoblast invasion and the cell transition from cytotrophoblasts to extravillous trophoblasts, which is an epithelial-to-mesenchymal transition-like process. Later in pregnancy, TGFβ signalling ensures proper vascularization and angiogenesis in placental endothelial cells. Beyond its role in trophoblasts and endothelial cells, TGFβ signalling contributes to the polarization and function of placental and decidual macrophages by promoting maternal tolerance of the semi-allogeneic foetus. Disturbances in early placental development have been associated with several pregnancy complications, including preeclampsia (PE) which is one of the severe complications. Emerging evidence suggests that TGFβ is involved in the pathogenesis of PE, thereby offering a potential target for intervention in the human placenta. OBJECTIVE AND RATIONALE This comprehensive review aims to explore and elucidate the roles of the major members of the TGFβ superfamily, including TGFβs, bone morphogenetic proteins (BMPs), activins, inhibins, nodals, and growth differentiation factors (GDFs), in the context of placental development and function. The review focusses on their interactions within the major cell types of the placenta, namely trophoblasts, endothelial cells, and immune cells, in both normal pregnancies and pregnancies complicated by PE throughout pregnancy. SEARCH METHODS A literature search was carried out using PubMed and Google Scholar, searching terms: 'TGF signalling preeclampsia', 'pregnancy TGF signalling', 'preeclampsia tgfβ', 'preeclampsia bmp', 'preeclampsia gdf', 'preeclampsia activin', 'endoglin preeclampsia', 'endoglin pregnancy', 'tgfβ signalling pregnancy', 'bmp signalling pregnancy', 'gdf signalling pregnancy', 'activin signalling pregnancy', 'Hofbauer cell tgfβ signalling', 'placental macrophages tgfβ', 'endothelial cells tgfβ', 'endothelium tgfβ signalling', 'trophoblast invasion tgfβ signalling', 'trophoblast invasion Smad', 'trophoblast invasion bmp', 'trophoblast invasion tgfβ', 'tgfβ preeclampsia', 'tgfβ placental development', 'TGFβ placental function', 'endothelial dysfunction preeclampsia tgfβ signalling', 'vascular remodelling placenta TGFβ', 'inflammation pregnancy tgfβ', 'immune response pregnancy tgfβ', 'immune tolerance pregnancy tgfβ', 'TGFβ pregnancy NK cells', 'bmp pregnancy NK cells', 'bmp pregnancy tregs', 'tgfβ pregnancy tregs', 'TGFβ placenta NK cells', 'TGFβ placenta tregs', 'NK cells preeclampsia', 'Tregs preeclampsia'. Only articles published in English until 2023 were used. OUTCOMES A comprehensive understanding of TGFβ signalling and its role in regulating interconnected cell functions of the main placental cell types provides valuable insights into the processes essential for successful placental development and growth of the foetus during pregnancy. By orchestrating trophoblast invasion, vascularization, immune tolerance, and tissue remodelling, TGFβ ligands contribute to the proper functioning of a healthy maternal-foetal interface. However, dysregulation of TGFβ signalling has been implicated in the pathogenesis of PE, where the shallow trophoblast invasion, defective vascular remodelling, decreased uteroplacental perfusion, and endothelial cell and immune dysfunction observed in PE, are all affected by an altered TGFβ signalling. WIDER IMPLICATIONS The dysregulation of TGFβ signalling in PE has important implications for research and clinical practice. Further investigation is required to understand the underlying mechanisms, including the role of different ligands and their regulation under pathophysiological conditions, in order to discover new therapeutic targets. Distinguishing between clinically manifested subtypes of PE and studying TGFβ signalling in different placental cell types holistically is an important first step. To put this knowledge into practice, pre-clinical animal models combined with new technologies are needed. This may also lead to improved human research models and identify potential therapeutic targets, ultimately improving outcomes for affected pregnancies and reducing the burden of PE.
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Affiliation(s)
| | | | - Gonzalo Sanchez-Duffhues
- Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Tissue-Specific BMP Signalling ISPA-HUCA, Oviedo, Spain
| | - Christian Wadsack
- Department of Obstetrics and Gynaecology, Medical University of Graz, Graz, Austria
- BioTechMed-Graz, Graz, Austria
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Zhang H, Yang Y, Cao Y, Guan J. IPF-related new macrophage subpopulations and diagnostic biomarker identification - combine machine learning with single-cell analysis. Respir Res 2024; 25:241. [PMID: 38872139 PMCID: PMC11170785 DOI: 10.1186/s12931-024-02845-8] [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: 03/29/2024] [Accepted: 05/10/2024] [Indexed: 06/15/2024] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a chronic disease of unknown etiology that lacks a specific treatment. In IPF, macrophages play a key regulatory role as a major component of the lung immune system, especially during inflammation and fibrosis. However, our understanding of the cellular heterogeneity and molecular characterization of macrophages in IPF, as well as their relevance in the clinical setting, is relatively limited. In this study, we analyzed in-depth single-cell transcriptome sequencing (scRNA-seq) data from lung tissues of IPF patients, identified macrophage subpopulations in IPF, and probed their molecular characteristics and biological functions. hdWGCNA identified co-expressed gene modules of a subpopulation of IPF-associated macrophages (IPF-MΦ), and probed the IPF-MΦ by a machine-learning approach. hdWGCNA identified a subpopulation of IPF-associated macrophage subpopulations and probed the IPF-MΦ signature gene (IRMG) for its prognostic value, and a prediction model was developed on this basis. In addition, IPF-MΦ was obtained after recluster analysis of macrophages in IPF lung tissues. Coexpressed gene modules of IPF-MΦ were identified by hdWGCNA. Then, a machine learning approach was utilized to reveal the characteristic genes of IPF-MΦ, and a prediction model was built on this basis. In addition, we discovered a type of macrophage unique to IPF lung tissue named ATP5-MΦ. Its characteristic gene encodes a subunit of the mitochondrial ATP synthase complex, which is closely related to oxidative phosphorylation and proton transmembrane transport, suggesting that ATP5-MΦ may have higher ATP synthesis capacity in IPF lung tissue. This study provides new insights into the pathogenesis of IPF and provides a basis for evaluating disease prognosis and predictive medicine in IPF patients.
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Affiliation(s)
- Hao Zhang
- Department of Oncology, The Eighth Medical Center, Chinese PLA (People's Liberation Army) General Hospital, Beijing, 100091, China
- Department of Oncology, The Fifth Medical Center, Chinese PLA (People's Liberation Army) General Hospital, Beijing, 100071, China
| | - Yuwei Yang
- College of Pulmonary & Critical Care Medicine, Chinese PLA General Hospital, Beijing, 100091, China
- Beijing Key Laboratory of OTIR, Beijing, 100091, China
| | - Yan Cao
- College of Pulmonary & Critical Care Medicine, Chinese PLA General Hospital, Beijing, 100091, China.
- Beijing Key Laboratory of OTIR, Beijing, 100091, China.
| | - Jingzhi Guan
- Department of Oncology, The Fifth Medical Center, Chinese PLA (People's Liberation Army) General Hospital, Beijing, 100071, China.
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3
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Toledo B, Zhu Chen L, Paniagua-Sancho M, Marchal JA, Perán M, Giovannetti E. Deciphering the performance of macrophages in tumour microenvironment: a call for precision immunotherapy. J Hematol Oncol 2024; 17:44. [PMID: 38863020 PMCID: PMC11167803 DOI: 10.1186/s13045-024-01559-0] [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: 03/05/2024] [Accepted: 05/21/2024] [Indexed: 06/13/2024] Open
Abstract
Macrophages infiltrating tumour tissues or residing in the microenvironment of solid tumours are known as tumour-associated macrophages (TAMs). These specialized immune cells play crucial roles in tumour growth, angiogenesis, immune regulation, metastasis, and chemoresistance. TAMs encompass various subpopulations, primarily classified into M1 and M2 subtypes based on their differentiation and activities. M1 macrophages, characterized by a pro-inflammatory phenotype, exert anti-tumoural effects, while M2 macrophages, with an anti-inflammatory phenotype, function as protumoural regulators. These highly versatile cells respond to stimuli from tumour cells and other constituents within the tumour microenvironment (TME), such as growth factors, cytokines, chemokines, and enzymes. These stimuli induce their polarization towards one phenotype or another, leading to complex interactions with TME components and influencing both pro-tumour and anti-tumour processes.This review comprehensively and deeply covers the literature on macrophages, their origin and function as well as the intricate interplay between macrophages and the TME, influencing the dual nature of TAMs in promoting both pro- and anti-tumour processes. Moreover, the review delves into the primary pathways implicated in macrophage polarization, examining the diverse stimuli that regulate this process. These stimuli play a crucial role in shaping the phenotype and functions of macrophages. In addition, the advantages and limitations of current macrophage based clinical interventions are reviewed, including enhancing TAM phagocytosis, inducing TAM exhaustion, inhibiting TAM recruitment, and polarizing TAMs towards an M1-like phenotype. In conclusion, while the treatment strategies targeting macrophages in precision medicine show promise, overcoming several obstacles is still necessary to achieve an accessible and efficient immunotherapy.
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Affiliation(s)
- Belén Toledo
- Department of Health Sciences, University of Jaén, Campus Lagunillas, Jaén, E-23071, Spain
- Department of Medical Oncology, Cancer Center Amsterdam, Cancer Biology and Immunology, Amsterdam UMC, VU University, Amsterdam, The Netherlands
| | - Linrui Zhu Chen
- Department of Medical Oncology, Cancer Center Amsterdam, Cancer Biology and Immunology, Amsterdam UMC, VU University, Amsterdam, The Netherlands
| | - María Paniagua-Sancho
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, E-18100, Spain
- Instituto de Investigación Sanitaria ibs. GRANADA, Hospitales Universitarios de Granada-Universidad de Granada, Granada, E-18071, Spain
- Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, E-18016, Spain
- Excellence Research Unit "Modeling Nature" (MNat), University of Granada, Granada, E-18016, Spain
| | - Juan Antonio Marchal
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, E-18100, Spain
- Instituto de Investigación Sanitaria ibs. GRANADA, Hospitales Universitarios de Granada-Universidad de Granada, Granada, E-18071, Spain
- Department of Human Anatomy and Embryology, Faculty of Medicine, University of Granada, Granada, E-18016, Spain
- Excellence Research Unit "Modeling Nature" (MNat), University of Granada, Granada, E-18016, Spain
| | - Macarena Perán
- Department of Health Sciences, University of Jaén, Campus Lagunillas, Jaén, E-23071, Spain.
- Biopathology and Regenerative Medicine Institute (IBIMER), Centre for Biomedical Research (CIBM), University of Granada, Granada, E-18100, Spain.
- Excellence Research Unit "Modeling Nature" (MNat), University of Granada, Granada, E-18016, Spain.
| | - Elisa Giovannetti
- Department of Medical Oncology, Cancer Center Amsterdam, Cancer Biology and Immunology, Amsterdam UMC, VU University, Amsterdam, The Netherlands.
- Cancer Pharmacology Lab, Fondazione Pisana per la Scienza, San Giuliano, Pisa, 56017, Italy.
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4
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Marrufo AM, Flores-Mireles AL. Macrophage fate: to kill or not to kill? Infect Immun 2024:e0047623. [PMID: 38829045 DOI: 10.1128/iai.00476-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024] Open
Abstract
Macrophages are dynamic innate immune cells that either reside in tissue, serving as sentinels, or recruited as monocytes from bone marrow into inflamed and infected tissue. In response to cues in the tissue microenvironment (TME), macrophages polarize on a continuum toward M1 or M2 with diverse roles in progression and resolution of disease. M1-like macrophages exhibit proinflammatory functions with antimicrobial and anti-tumorigenic activities, while M2-like macrophages have anti-inflammatory functions that generally resolve inflammatory responses and orchestrate a tissue healing process. Given these opposite phenotypes, proper spatiotemporal coordination of macrophage polarization in response to cues within the TME is critical to effectively resolve infectious disease and regulate wound healing. However, if this spatiotemporal coordination becomes disrupted due to persistent infection or dysregulated coagulation, macrophages' inappropriate response to these cues will result in the development of diseases with clinically unfavorable outcomes. Since plasticity and heterogeneity are hallmarks of macrophages, they are attractive targets for therapies to reprogram toward specific phenotypes that could resolve disease and favor clinical prognosis. In this review, we discuss how basic science studies have elucidated macrophage polarization mechanisms in TMEs during infections and inflammation, particularly coagulation. Therefore, understanding the dynamics of macrophage polarization within TMEs in diseases is important in further development of targeted therapies.
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Affiliation(s)
- Armando M Marrufo
- Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana, USA
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Gan X, Hu J, Pang Q, Yan R, Bao Y, Liu Y, Song J, Wang Z, Sun W, Huang F, Cai C, Wang L. LDHA-mediated M2-type macrophage polarization via tumor-derived exosomal EPHA2 promotes renal cell carcinoma progression. Mol Carcinog 2024. [PMID: 38780182 DOI: 10.1002/mc.23737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/12/2024] [Accepted: 03/27/2024] [Indexed: 05/25/2024]
Abstract
Lactate dehydrogenase A (LDHA) is known to promote the growth and invasion of various types of tumors, affects tumor resistance, and is associated with tumor immune escape. But how LDHA reshapes the tumor microenvironment and promotes the progression of renal cell carcinoma (RCC) remains unclear. In this study, we found that LDHA was highly expressed in clear cell RCC (ccRCC), and this high expression was associated with macrophage infiltration, while macrophages were highly infiltrated in ccRCC, affecting patient prognosis via M2-type polarization. Our in vivo and in vitro experiments demonstrated that LDHA and M2-type macrophages could enhance the proliferation, invasion, and migration abilities of ccRCC cells. Mechanistically, high expression of LDHA in ccRCC cells upregulated the expression of EPHA2 in exosomes derived from renal cancer. Exosomal EPHA2 promoted M2-type polarization of macrophages by promoting activation of the PI3K/AKT/mTOR pathway in macrophages, thereby promoting the progression of ccRCC. All these findings suggest that EPHA2 may prove to be a potential therapeutic target for advanced RCC.
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Affiliation(s)
- Xinxin Gan
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Jiatao Hu
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Qingyang Pang
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Rui Yan
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yi Bao
- Department of Urology, Eastern Hepatobiliary Surgery Hospital, Naval Medical University, Shanghai, China
| | - Ying Liu
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Jiaao Song
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Zheng Wang
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Weihao Sun
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Fuzhao Huang
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Chen Cai
- Department of Special Clinic, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Linhui Wang
- Department of Urology, Changhai Hospital, Naval Medical University, Shanghai, China
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
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6
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Lu L, Wang L, Peng C, Chen L, He X, Shao C, Wang C, Ge R. Undifferentiated carcinoma of the liver with osteoclast-like giant cells: a case report and literature review. Infect Agent Cancer 2024; 19:14. [PMID: 38643211 PMCID: PMC11032592 DOI: 10.1186/s13027-024-00582-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 04/17/2024] [Indexed: 04/22/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common primary malignant tumor of the liver. Osteoclast-like giant cells (OGCs) are relatively more common in pancreatic cancer, but extremely rare in HCC. Currently, there have been only a few reported cases of OGCs in HCC, and their presence indicates an aggressive clinical course. Here, we present a case of primary undifferentiated carcinoma of the liver with OGCs in a 49-year-old male patient, and through a literature review, we summarize 20 similar cases to further understand the diagnosis, treatment, and clinical course of this disease entity.
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Affiliation(s)
- Lixia Lu
- Department of Histopathology, Ningbo Clinical Pathology Diagnosis Center, No. 685 East of North Huangcheng Road, Jiangbei District, Ningbo City, 315021, Zhejiang Province, China
| | - Li Wang
- Department of Histopathology, Ningbo Clinical Pathology Diagnosis Center, No. 685 East of North Huangcheng Road, Jiangbei District, Ningbo City, 315021, Zhejiang Province, China
| | - Can Peng
- Department of Histopathology, Ningbo Clinical Pathology Diagnosis Center, No. 685 East of North Huangcheng Road, Jiangbei District, Ningbo City, 315021, Zhejiang Province, China
| | - Li Chen
- Department of Histopathology, Ningbo Clinical Pathology Diagnosis Center, No. 685 East of North Huangcheng Road, Jiangbei District, Ningbo City, 315021, Zhejiang Province, China
| | - Ximan He
- Department of Histopathology, Ningbo Clinical Pathology Diagnosis Center, No. 685 East of North Huangcheng Road, Jiangbei District, Ningbo City, 315021, Zhejiang Province, China
| | - Chenning Shao
- Department of Histopathology, Ningbo Clinical Pathology Diagnosis Center, No. 685 East of North Huangcheng Road, Jiangbei District, Ningbo City, 315021, Zhejiang Province, China
| | - Chunnian Wang
- Department of Histopathology, Ningbo Clinical Pathology Diagnosis Center, No. 685 East of North Huangcheng Road, Jiangbei District, Ningbo City, 315021, Zhejiang Province, China
| | - Rong Ge
- Department of Histopathology, Ningbo Clinical Pathology Diagnosis Center, No. 685 East of North Huangcheng Road, Jiangbei District, Ningbo City, 315021, Zhejiang Province, China.
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Yao X, Zhang L, Sun S, Fu A, Ge Y. Progress of research on the relationship between efferocytosis and tumor. Front Oncol 2024; 14:1361327. [PMID: 38655133 PMCID: PMC11035832 DOI: 10.3389/fonc.2024.1361327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 03/25/2024] [Indexed: 04/26/2024] Open
Abstract
Tumors are genetic changes that develop in an organism as a result of many internal and external causes. They affect the biological behavior of cells, cause them to grow independently, and give rise to new, perpetually proliferating organisms. Recent research has supported the critical function of tumor-associated macrophages in the development, progression, and metastasis of tumors through efferocytosis. Yet, there is still much to learn about the mechanisms behind their contribution to tumor pathological processes. As a result, it's critical to actively investigate how cytosolic processes contribute to the growth of tumors and to create novel therapeutic approaches.
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Affiliation(s)
| | | | | | | | - Yanlei Ge
- North China University of Science and Technology Affiliated Hospital, Tangshan, China
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8
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Sain N, Hooda V, Singh A, Gupta S, Arava S, Sharma A. Macrophage inhibitory factor alters the functionality of macrophages and their involvement in disease pathogenesis of active generalized vitiligo patients. Cytokine 2024; 176:156516. [PMID: 38340551 DOI: 10.1016/j.cyto.2024.156516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/12/2024]
Abstract
INTRODUCTION In autoimmune dermatitis patients, a macrophage migration inhibitory factor (MIF) is widely used to determine the severity of the diseases with other clinical parameters. Moreover, in vitiligo, MIF has shown significant positive correlation with the VASI (Vitiligo Area Scoring Index) score of both generalized and localized vitiligo patients. MIF function as pro-inflammatory cytokine and inhibited random migration of macrophages from inflammation loci. Hence, activated macrophage infiltrates promote the diseases pathogenesis. Till date, macrophages and involvement of their secreted MIF in disease severity of vitiligo patients remains undetermined. MATERIAL AND METHOD The frequency of both M1 and M2 macrophages was evaluated in active GV patients (n = 20) using flow cytometry in blood and in tissues by confocal microscopy (n = 10). Relative m-RNA expression and cytokine profiling of pro and anti-inflammatory mediators were estimated in PBMCs and in serum of patients. Lastly, concentration of nitric oxide and phagocytic activity from macrophages of active patients were calculated to understand the diseases pathology in detail. RESULT Both in circulation as well as in tissues, the infiltration of M1 macrophages was increased in active GV patients, while the percentage of M2 macrophages was comparable to healthy tissues. Aberrant expression of pro and anti-inflammatory molecules including IL-1β, IL-6, TNF-α, IL-12 and MIF impair the cellular hemostasis and induce systematic inflammation. Elevated nitric oxide and higher phagocytic activity of macrophages enhanced the destruction and/or depigmentation of melanocytes causing vitiligo. CONCLUSION Elevated macrophages in both tissue and blood enhanced the secretion of MIF and other inflammatory mediators that further enforce the production of nitric oxide, activation and phagocytic activity of macrophages against melanocytes and melanocytes antigens. As a result, destruction of melanocytes and melanin production occurred and caused the depigmentation and/or white macules on the skin.
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Affiliation(s)
- Nikita Sain
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Vishakha Hooda
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Ashu Singh
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Somesh Gupta
- Department of Dermatology & Venereology, All India Institute of Medical Sciences, New Delhi, India
| | - Sudheer Arava
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Alpana Sharma
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India.
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Sheng W, Yu J, Zhang H, Zhang J. Empagliflozin attenuates inflammation levels in autoimmune myocarditis through the STAT3 pathway and macrophage phenotype transformation. Mol Immunol 2024; 167:43-52. [PMID: 38354482 DOI: 10.1016/j.molimm.2024.02.006] [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: 04/29/2023] [Revised: 11/26/2023] [Accepted: 02/05/2024] [Indexed: 02/16/2024]
Abstract
OBJECTIVE To investigate the anti-inflammatory actions and molecular mechanisms of the sodium/glucose cotransporter 2 (SGLT-2) inhibitor empagliflozin on autoimmune myocarditis. METHODS The experimental autoimmune myocarditis (EAM) mouse model was constructed using peptides, and the therapeutic effects of empagliflozin on cardiac inflammation and fibrosis were observed using hematoxylin and eosin (HE), Sirius red staining, and Masson's trichome staining. Western blotting was used to identify the actions of empagliflozin on the surface marker expression levels of M2 macrophages and inflammatory factors. In vitro, experiments were completed using lentiviral overexpression of SGLT-2 in macrophages. Macrophage inflammation and anti-inflammatory models were constructed using lipopolysaccharide and interleukin-4, respectively. Enzyme-linked immunosorbent assay, immunofluorescence staining, and reverse-transcription polymerase chain reaction were applied to detect the effects of empagliflozin on the levels of inflammatory factors and macrophage surface markers. Western blotting was used to identify variability in SGLT-2 expression and the role of empagliflozin on the signal transducer and activator of the transcription 3 (STAT3) pathway. The Genomic Spatial Event 142564 dataset was studied in an EAM mouse model. We selected single-cell sequencing results from day 0 and day 21 of modeling to visualize differentially expressed genes. Immune cell infiltration correlation analysis was implemented to explore the expression of inflammatory factors and phenotypic markers. RESULTS Empagliflozin increased the expression of the M2 macrophage surface marker CD206 and reduced the level of inflammatory factors in the EAM mouse model while reducing the levels of inflammation and fibrosis. In vitro experiments revealed that the phosphorylation of STAT3 pathway was enhanced after macrophages were polarized to M1 phenotype by LPS, the phosphorylation of STAT3 pathway was inhibited after empagliflozin intervention, and the levels of inflammatory factors were decreased. CONCLUSION Empagliflozin can reduce the level of inflammation in autoimmune myocarditis through the STAT3 pathway and macrophage phenotype transformation. These results indicate the expression of SGLT-2 can be a target for autoimmune myocarditis therapy.
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Affiliation(s)
- Wenxin Sheng
- Department of Cardiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, PR China
| | - Jianshu Yu
- Department of Neurosurgery, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250033, PR China
| | - Hao Zhang
- Department of Cardiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, PR China
| | - Jingbo Zhang
- Department of Cardiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, PR China.
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10
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Ju Z, Cui F, Mao Z, Li Z, Yi X, Zhou J, Cao J, Li X, Qian Z. miR-335-3p improves type II diabetes mellitus by IGF-1 regulating macrophage polarization. Open Med (Wars) 2024; 19:20240912. [PMID: 38463527 PMCID: PMC10921448 DOI: 10.1515/med-2024-0912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 12/21/2023] [Accepted: 01/22/2024] [Indexed: 03/12/2024] Open
Abstract
Previous studies have found that miR-335 is highly expressed in type II diabetes mellitus (T2DM) models and is related to insulin secretion, but there are few studies on the regulatory effects of miR-335-3p on insulin resistance and macrophage polarization in T2DM patients. This study aims to explore the effects of miR-335-3p on insulin resistance and macrophage polarization in T2DM patients. Blood glucose (insulin tolerance tests, glucose tolerance tests) and body weight of the T2DM model were measured; macrophages from adipose tissue were isolated and cultured, and the number of macrophages was detected by F4/80 immunofluorescence assay; the Real-time quantitative polymerase chain reaction (qPCR) assay and Western blot assay were used to detect the miR-335-3p expression levels, insulin-like growth factor 1 (IGF-1), M1-polarizing genes (inducible nitric oxide synthase [iNOS] and TNF-α) as well as M2-polarizing genes (IL-10 and ARG-1). The targeting link between miR-335-3p and IGF-1 was confirmed using bioinformatics and dual luciferase assay. The results showed that miR-335-3p expression level in adipose tissue of the T2DM model was significantly decreased, and the mice's body weight and blood glucose levels dropped considerably, miR-335-3p inhibited the number of macrophages, inhibiting the iNOS and TNF-α relative mRNA expression levels, and up-regulated the IL-10 and ARG-1 relative mRNA expression levels, miR-335-3p negatively regulated target gene IGF-1, IGF-1 significantly increased the iNOS and TNF-α mRNA and protein expression levels, decreasing the IL-10 and ARG-1 mRNA and protein expression levels, indicating that miR-335-3p could affect the T2DM process by regulating macrophage polarization via IGF-1.
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Affiliation(s)
- Zhengzheng Ju
- Department of Clinical Laboratory, Wuhu Hospital Affiliated to Anhui University of Science and Technology (The First People’s Hospital of Wuhu), Wuhu, Anhui, China
| | - Fan Cui
- Department of Clinical Laboratory, Wuhu Hospital Affiliated to Anhui University of Science and Technology (The First People’s Hospital of Wuhu), Wuhu, Anhui, China
| | - Zheng Mao
- Department of Clinical Laboratory, Wuhu Hospital Affiliated to Anhui University of Science and Technology (The First People’s Hospital of Wuhu), Wuhu, Anhui, China
| | - Zhen Li
- Department of Clinical Laboratory, Wuhu Hospital Affiliated to Anhui University of Science and Technology (The First People’s Hospital of Wuhu), Wuhu, Anhui, China
| | - Xiayu Yi
- Department of Clinical Laboratory, Wuhu Hospital Affiliated to Anhui University of Science and Technology (The First People’s Hospital of Wuhu), Wuhu, Anhui, China
| | - Jingjing Zhou
- Department of Clinical Laboratory, Wuhu Hospital Affiliated to Anhui University of Science and Technology (The First People’s Hospital of Wuhu), Wuhu, Anhui, China
| | - Jinjin Cao
- Department of Clinical Laboratory, Wuhu Hospital Affiliated to Anhui University of Science and Technology (The First People’s Hospital of Wuhu), Wuhu, Anhui, China
| | - Xiaoqin Li
- Department of Clinical Laboratory, Wuhu Hospital Affiliated to Anhui University of Science and Technology (The First People’s Hospital of Wuhu), Wuhu, Anhui, China
| | - Zengkun Qian
- Department of Clinical Laboratory, Wuhu Hospital Affiliated to Anhui University of Science and Technology (The First People’s Hospital of Wuhu), Wuhu, Anhui, China
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11
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Stinson MW, Liu S, Laurenson AJ, Rotty JD. Macrophage migration is differentially regulated by fibronectin and laminin through altered adhesion and myosin II localization. Mol Biol Cell 2024; 35:ar22. [PMID: 38088893 PMCID: PMC10881148 DOI: 10.1091/mbc.e23-04-0137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 10/30/2023] [Accepted: 11/28/2023] [Indexed: 12/26/2023] Open
Abstract
Macrophages are indispensable for proper immune surveillance and inflammatory regulation. They also exhibit dramatic phenotypic plasticity and are highly responsive to their local microenvironment, which includes the extracellular matrix (ECM). This work demonstrates that two fibrous ECM glycoproteins, fibronectin (FN) and laminin (LAM), elicit distinct morphological and migratory responses from macrophages in two-dimensional environments. LAM 111 inhibits macrophage cell spreading, but drives them to migrate rapidly and less persistently compared with cells on FN. Differential integrin engagement and ROCK/myosin II organization helps explain why macrophages alter their morphology and migration character on these two ECM components. This study also demonstrates that LAM 111 exerts a suppressive effect toward FN, as macrophages plated on a LAM/FN mixture adopt a morphology and migratory character almost identical to LAM alone. This suggests that distinct responses can be initiated downstream of receptor-ECM engagement, and that one component of the microenvironment may affect the cell's ability to sense another. Overall, macrophages appear intrinsically poised to rapidly switch between distinct migratory characters based on their ECM environments. The role of ECM composition in dictating motile and inflammatory responses in three-dimensional and in vivo contexts warrants further study.
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Affiliation(s)
- Matthew W. Stinson
- Uniformed Services University of the Health Sciences, Department of Biochemistry, Bethesda, MD 20814
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817
| | - Sophia Liu
- Uniformed Services University of the Health Sciences, Department of Biochemistry, Bethesda, MD 20814
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817
| | - Alexander J. Laurenson
- Uniformed Services University of the Health Sciences, Department of Biochemistry, Bethesda, MD 20814
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, MD 20817
| | - Jeremy D. Rotty
- Uniformed Services University of the Health Sciences, Department of Biochemistry, Bethesda, MD 20814
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12
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Kerboeuf M, Haugeberg DA, Olsen T, Sørling LK, Koppang EO, Moe L, Haaland AH. Tumor-associated macrophages in canine visceral hemangiosarcoma. Vet Pathol 2024; 61:32-45. [PMID: 37341055 PMCID: PMC10687809 DOI: 10.1177/03009858231179947] [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] [Indexed: 06/22/2023]
Abstract
Canine hemangiosarcoma (HSA) is a highly malignant tumor derived from hematopoietic stem cells and commonly occurs in visceral organs or skin. Visceral HSAs are particularly aggressive and progress rapidly despite multimodal treatment. Tumor-associated macrophages (TAMs) play a central role in carcinogenesis, tumor progression, and metastasis in humans and murine models. In this retrospective study, we investigated the prevalence and phenotype of TAMs in privately owned, treatment-naïve dogs with naturally occurring HSA. We used CD204 as a general macrophage marker and CD206 as a marker for M2-polarized macrophages. Formalin-fixed paraffin-embedded tissues from HSAs in the spleen (n = 9), heart (n = 6), and other locations (n = 12) from 17 dogs were sectioned and immunohistochemically labeled with CD204 and CD206 antibodies. The mean number of log(CD204)- and log(CD206)-positive cells and the ratio of log(CD206/CD204)-positive cells were compared with normal surrounding tissues and between tumor locations. There were significantly more macrophages and M2 macrophages, and a higher ratio of M2 macrophages to total macrophages in tumor hot spots (P = .0002, P < .0001, and P = .0002, respectively) and in tumor tissues outside of hot spots (P = .009, P = .002, and P = .007, respectively) than in normal surrounding tissues. There were no significant differences between tumor locations, but there was a trend toward higher numbers of CD204-positive macrophages within the splenic tumors. There was no association between histological parameters or clinical stage and TAM numbers or phenotype. As in humans, TAMs in dogs with HSA have a predominantly M2-skewed phenotype. Dogs with HSA could serve as excellent models to evaluate new TAM-reprogramming therapies.
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Affiliation(s)
| | | | - Tobias Olsen
- Norwegian University of Life Sciences, Ås, Norway
| | | | | | - Lars Moe
- Norwegian University of Life Sciences, Ås, Norway
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13
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Yang G, Yang Y, Liu Y, Liu X. Regulation of alveolar macrophage death in pulmonary fibrosis: a review. Apoptosis 2023; 28:1505-1519. [PMID: 37707713 PMCID: PMC10618387 DOI: 10.1007/s10495-023-01888-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2023] [Indexed: 09/15/2023]
Abstract
Pulmonary fibrosis (PF) is a disease in which excessive extracellular matrix (ECM) accumulation occurs in pulmonary mesenchyme, which induces the destruction of alveolar structures and poor prognosis. Macrophage death is responsible for ECM accumulation after alveolar epithelial injury in PF. Depending on the local micro-environments, macrophages can be polarized to either classically activated (M1) or alternatively activated (M2) macrophage phenotypes. In general, M1 macrophages can promote inflammation and sterilization, stop the continuous damage process and prevent excessive repair, while M2 macrophages are anti-inflammatory and promote tissue repair, and excessive M2 macrophage activity may inhibit the absorption and degradation of ECM. Emerging evidence has revealed that death forms such as pyroptosis mediated by inflammasome affect polarization direction and ultimately lead to the development of PF. Pharmacological manipulation of macrophages death signals may serve as a logical therapeutic strategy for PF. This review will focus on the current state of knowledge regarding the regulation and underlying mechanisms of macrophages and their mediators in the influence of macrophage death on the development of PF. We expect to provide help in developing effective therapeutic strategies in clinical settings.
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Affiliation(s)
- Ganghao Yang
- Department of Respiratory and Critical Medicine, University of Electronic Science and Technology of China Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences and Sichuan People's Hospital, Chengdu, Sichuan, China
| | - Yang Yang
- Department of Respiratory and Critical Medicine, University of Electronic Science and Technology of China Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences and Sichuan People's Hospital, Chengdu, Sichuan, China
| | - Yiping Liu
- Department of Respiratory and Critical Medicine, University of Electronic Science and Technology of China Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences and Sichuan People's Hospital, Chengdu, Sichuan, China
| | - Xiaoshu Liu
- Department of Respiratory and Critical Medicine, University of Electronic Science and Technology of China Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences and Sichuan People's Hospital, Chengdu, Sichuan, China.
- Department of Respiratory and Critical Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuai Fu Yuan Street, Dong Cheng District, Beijing, 100730, China.
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14
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Li Y, Ming M, Li C, Liu S, Zhang D, Song T, Tan J, Zhang J. The emerging role of the hedgehog signaling pathway in immunity response and autoimmune diseases. Autoimmunity 2023; 56:2259127. [PMID: 37740690 DOI: 10.1080/08916934.2023.2259127] [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: 04/09/2023] [Accepted: 09/10/2023] [Indexed: 09/25/2023]
Abstract
The Hedgehog (Hh) family is a prototypical morphogen involved in embryonic patterning, multi-lineage differentiation, self-renewal, morphogenesis, and regeneration. There are studies that have demonstrated that the Hh signaling pathway differentiates developing T cells into MHC-restricted self-antigen tolerant T cells in a concentration-dependent manner in the thymus. Whereas Hh signaling pathway is not required in the differentiation of B cells but is indispensable in maintaining the regeneration of hematopoietic stem cells (HSCs) and the viability of germinal centers (GCs) B cells. The Hh signaling pathway exerts both positive and negative effects on immune responses, which involves activating human peripheral CD4+ T cells, regulating the accumulation of natural killer T (NKT) cells, recruiting and activating macrophages, increasing CD4+Foxp3+ regulatory T cells in the inflammation sites to sustain homeostasis. Hedgehog signaling is involved in the patterning of the embryo, as well as homeostasis of adult tissues. Therefore, this review aims to highlight evidence for Hh signaling in the differentiation, function of immune cells and autoimmune disease. Targeting Hh signaling promises to be a novel, alternative or adjunct approach to treating tumors and autoimmune diseases.
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Affiliation(s)
- Yunfei Li
- Department of Immunology, Zunyi Medical University, Zunyi, China
- Department of Respiratory Medicine, The Third Affiliated Hospital of Zunyi Medical University (The First People's Hospital of Zunyi), Zunyi, China
| | - Min Ming
- Department of Immunology, Zunyi Medical University, Zunyi, China
- People's Hospital of Qingbaijiang District, Chengdu, China
| | - Chunyang Li
- Department of Immunology, Zunyi Medical University, Zunyi, China
- Special Key Laboratory of Gene Detection and Therapy of Guizhou Province, Zunyi Medical University, Zunyi, China
| | - Songpo Liu
- Department of Immunology, Zunyi Medical University, Zunyi, China
- Special Key Laboratory of Gene Detection and Therapy of Guizhou Province, Zunyi Medical University, Zunyi, China
| | - Dan Zhang
- Zunyi Medical University Library, Zunyi, China
| | - Tao Song
- Department of Immunology, Zunyi Medical University, Zunyi, China
- Special Key Laboratory of Gene Detection and Therapy of Guizhou Province, Zunyi Medical University, Zunyi, China
- Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine, Zunyi Medical University, Zunyi, China
| | - Jun Tan
- Department of Histology and Embryology, Zunyi Medical University, Zunyi, China
| | - Jidong Zhang
- Department of Immunology, Zunyi Medical University, Zunyi, China
- Special Key Laboratory of Gene Detection and Therapy of Guizhou Province, Zunyi Medical University, Zunyi, China
- Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine, Zunyi Medical University, Zunyi, China
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15
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Favor OK, Rajasinghe LD, Wierenga KA, Maddipati KR, Lee KSS, Olive AJ, Pestka JJ. Crystalline silica-induced proinflammatory eicosanoid storm in novel alveolar macrophage model quelled by docosahexaenoic acid supplementation. Front Immunol 2023; 14:1274147. [PMID: 38022527 PMCID: PMC10665862 DOI: 10.3389/fimmu.2023.1274147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/16/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Phagocytosis of inhaled crystalline silica (cSiO2) particles by tissue-resident alveolar macrophages (AMs) initiates generation of proinflammatory eicosanoids derived from the ω-6 polyunsaturated fatty acid (PUFA) arachidonic acid (ARA) that contribute to chronic inflammatory disease in the lung. While supplementation with the ω-3 PUFA docosahexaenoic acid (DHA) may influence injurious cSiO2-triggered oxylipin responses, in vitro investigation of this hypothesis in physiologically relevant AMs is challenging due to their short-lived nature and low recovery numbers from mouse lungs. To overcome these challenges, we employed fetal liver-derived alveolar-like macrophages (FLAMs), a self-renewing surrogate that is phenotypically representative of primary lung AMs, to discern how DHA influences cSiO2-induced eicosanoids. Methods We first compared how delivery of 25 µM DHA as ethanolic suspensions or as bovine serum albumin (BSA) complexes to C57BL/6 FLAMs impacts phospholipid fatty acid content. We subsequently treated FLAMs with 25 µM ethanolic DHA or ethanol vehicle (VEH) for 24 h, with or without LPS priming for 2 h, and with or without cSiO2 for 1.5 or 4 h and then measured oxylipin production by LC-MS lipidomics targeting for 156 oxylipins. Results were further related to concurrent proinflammatory cytokine production and cell death induction. Results DHA delivery as ethanolic suspensions or BSA complexes were similarly effective at increasing ω-3 PUFA content of phospholipids while decreasing the ω-6 PUFA arachidonic acid (ARA) and the ω-9 monounsaturated fatty acid oleic acid. cSiO2 time-dependently elicited myriad ARA-derived eicosanoids consisting of prostaglandins, leukotrienes, thromboxanes, and hydroxyeicosatetraenoic acids in unprimed and LPS-primed FLAMs. This cSiO2-induced eicosanoid storm was dramatically suppressed in DHA-supplemented FLAMs which instead produced potentially pro-resolving DHA-derived docosanoids. cSiO2 elicited marked IL-1α, IL-1β, and TNF-α release after 1.5 and 4 h of cSiO2 exposure in LPS-primed FLAMs which was significantly inhibited by DHA. DHA did not affect cSiO2-triggered death induction in unprimed FLAMs but modestly enhanced it in LPS-primed FLAMs. Discussion FLAMs are amenable to lipidome modulation by DHA which suppresses cSiO2-triggered production of ARA-derived eicosanoids and proinflammatory cytokines. FLAMs are a potential in vitro alternative to primary AMs for investigating interventions against early toxicant-triggered inflammation in the lung.
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Affiliation(s)
- Olivia K. Favor
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, United States
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Lichchavi D. Rajasinghe
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
| | - Kathryn A. Wierenga
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, United States
| | | | - Kin Sing Stephen Lee
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, MI, United States
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
- Department of Chemistry, Michigan State University, East Lansing, MI, United States
| | - Andrew J. Olive
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, United States
| | - James J. Pestka
- Institute for Integrative Toxicology, Michigan State University, East Lansing, MI, United States
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, United States
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, MI, United States
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16
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Drab D, Santocki M, Opydo M, Kolaczkowska E. Impact of endogenous and exogenous nitrogen species on macrophage extracellular trap (MET) formation by bone marrow-derived macrophages. Cell Tissue Res 2023; 394:361-377. [PMID: 37789240 PMCID: PMC10638184 DOI: 10.1007/s00441-023-03832-z] [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: 12/12/2022] [Accepted: 09/26/2023] [Indexed: 10/05/2023]
Abstract
Macrophage extracellular traps (METs) represent a novel defense mechanism in the antimicrobial arsenal of macrophages. However, mechanisms of MET formation are still poorly understood and this is at least partially due to the lack of reliable and reproducible models. Thus, we aimed at establishing a protocol of MET induction by bone marrow-derived macrophages (BMDMs) obtained from cryopreserved and then thawed bone marrow (BM) mouse cells. We report that BMDMs obtained in this way were morphologically (F4/80+) and functionally (expression of inducible nitric oxide (NO) synthase and NO production) differentiated and responded to various stimuli of bacterial (lipopolysaccharide, LPS), fungal (zymosan) and chemical (PMA) origin. Importantly, BMDMs were successfully casting METs composed of extracellular DNA (extDNA) serving as their backbone to which proteins such as H2A.X histones and matrix metalloproteinase 9 (MMP-9) were attached. In rendered 3D structure of METs, extDNA and protein components were embedded in each other. Since studies had shown the involvement of oxygen species in MET release, we aimed at studying if reactive nitrogen species (RNS) such as NO are also involved in MET formation. By application of NOS inhibitor - L-NAME or nitric oxide donor (SNAP), we studied the involvement of endogenous and exogenous RNS in traps release. We demonstrated that L-NAME halted MET formation upon stimulation with LPS while SNAP alone induced it. The latter phenomenon was further enhanced in the presence of LPS. Taken together, our findings demonstrate that BMDMs obtained from cryopreserved BM cells are capable of forming METs in an RNS-dependent manner.
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Affiliation(s)
- Dominika Drab
- Laboratory of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, 30-387, Krakow, Poland
- Doctoral School of Exact and Natural Sciences, Jagiellonian University, Krakow, Poland
| | - Michal Santocki
- Laboratory of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, 30-387, Krakow, Poland
| | - Malgorzata Opydo
- Laboratory of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, 30-387, Krakow, Poland
| | - Elzbieta Kolaczkowska
- Laboratory of Experimental Hematology, Institute of Zoology and Biomedical Research, Jagiellonian University, 30-387, Krakow, Poland.
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17
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Rauchenwald T, Handle F, Connolly CE, Degen A, Seifarth C, Hermann M, Tripp CH, Wilflingseder D, Lobenwein S, Savic D, Pölzl L, Morandi EM, Wolfram D, Skvortsova II, Stoitzner P, Haybaeck J, Konschake M, Pierer G, Ploner C. Preadipocytes in human granulation tissue: role in wound healing and response to macrophage polarization. Inflamm Regen 2023; 43:53. [PMID: 37904253 PMCID: PMC10617061 DOI: 10.1186/s41232-023-00302-5] [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: 10/05/2023] [Accepted: 10/15/2023] [Indexed: 11/01/2023] Open
Abstract
BACKGROUND Chronic non-healing wounds pose a global health challenge. Under optimized conditions, skin wounds heal by the formation of scar tissue. However, deregulated cell activation leads to persistent inflammation and the formation of granulation tissue, a type of premature scar tissue without epithelialization. Regenerative cells from the wound periphery contribute to the healing process, but little is known about their cellular fate in an inflammatory, macrophage-dominated wound microenvironment. METHODS We examined CD45-/CD31-/CD34+ preadipocytes and CD68+ macrophages in human granulation tissue from pressure ulcers (n=6) using immunofluorescence, immunohistochemistry, and flow cytometry. In vitro, we studied macrophage-preadipocyte interactions using primary human adipose-derived stem cells (ASCs) exposed to conditioned medium harvested from IFNG/LPS (M1)- or IL4/IL13 (M2)-activated macrophages. Macrophages were derived from THP1 cells or CD14+ monocytes. In addition to confocal microscopy and flow cytometry, ASCs were analyzed for metabolic (OXPHOS, glycolysis), morphological (cytoskeleton), and mitochondrial (ATP production, membrane potential) changes. Angiogenic properties of ASCs were determined by HUVEC-based angiogenesis assay. Protein and mRNA levels were assessed by immunoblotting and quantitative RT-PCR. RESULTS CD45-/CD31-/CD34+ preadipocytes were observed with a prevalence of up to 1.5% of total viable cells in human granulation tissue. Immunofluorescence staining suggested a spatial proximity of these cells to CD68+ macrophages in vivo. In vitro, ASCs exposed to M1, but not to M2 macrophage secretome showed a pro-fibrotic response characterized by stress fiber formation, elevated alpha smooth muscle actin (SMA), and increased expression of integrins ITGA5 and ITGAV. Macrophage-secreted IL1B and TGFB1 mediated this response via the PI3K/AKT and p38-MAPK pathways. In addition, ASCs exposed to M1-inflammatory stress demonstrated reduced migration, switched to a glycolysis-dominated metabolism with reduced ATP production, and increased levels of inflammatory cytokines such as IL1B, IL8, and MCP1. Notably, M1 but not M2 macrophages enhanced the angiogenic potential of ASCs. CONCLUSION Preadipocyte fate in wound tissue is influenced by macrophage polarization. Pro-inflammatory M1 macrophages induce a pro-fibrotic response in ASCs through IL1B and TGFB1 signaling, while anti-inflammatory M2 macrophages have limited effects. These findings shed light on cellular interactions in chronic wounds and provide important information for the potential therapeutic use of ASCs in human wound healing.
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Affiliation(s)
- Tina Rauchenwald
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Florian Handle
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University Innsbruck, Innsbruck, Austria
| | - Catherine E Connolly
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Antonia Degen
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Christof Seifarth
- Institute of Clinical and Functional Anatomy, Medical University of Innsbruck, Innsbruck, Austria
| | - Martin Hermann
- Department of Anesthesiology and Critical Care Medicine, Medical University of Innsbruck, Innsbruck, Austria
| | - Christoph H Tripp
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Doris Wilflingseder
- Institute of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Susanne Lobenwein
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Dragana Savic
- Department of Therapeutic Radiology and Oncology, Medical University of Innsbruck, EXTRO-Lab, Tyrolean Cancer Research Institute, Innsbruck, Austria
| | - Leo Pölzl
- Department of Cardiac Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Evi M Morandi
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Dolores Wolfram
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Ira-Ida Skvortsova
- Department of Therapeutic Radiology and Oncology, Medical University of Innsbruck, EXTRO-Lab, Tyrolean Cancer Research Institute, Innsbruck, Austria
| | - Patrizia Stoitzner
- Department of Dermatology, Venereology and Allergology, Medical University of Innsbruck, Innsbruck, Austria
| | - Johannes Haybaeck
- Institute of Pathology, Neuropathology and Molecular Pathology, Medical University Innsbruck, Innsbruck, Austria
- Diagnostic and Research Center for Molecular Biomedicine, Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Marko Konschake
- Institute of Clinical and Functional Anatomy, Medical University of Innsbruck, Innsbruck, Austria
| | - Gerhard Pierer
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian Ploner
- Department of Plastic, Reconstructive and Aesthetic Surgery, Medical University of Innsbruck, Innsbruck, Austria.
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18
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Tan YP, Tsang CC, Chan KF, Fung SL, Kok KH, Lau SKP, Woo PCY. Differential innate immune responses of human macrophages and bronchial epithelial cells against Talaromyces marneffei. mSphere 2023; 8:e0025822. [PMID: 37695039 PMCID: PMC10597461 DOI: 10.1128/msphere.00258-22] [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: 06/02/2022] [Accepted: 07/11/2023] [Indexed: 09/12/2023] Open
Abstract
Talaromyces marneffei is a thermally dimorphic fungal pathogen endemic in Southeast Asia. As inhalation of airborne conidia is believed as the major infection route, airway epithelial cells followed by pulmonary macrophages are the first cell types which the fungus encounters inside the host. In this study, we established an in vitro infection model based on human peripheral blood-derived macrophages (hPBDMs) cultured with the supplementation of autologous plasma. Using this model, we determined the transcriptomic changes of hPBDMs in response to T. marneffei infection by quantitative real-time reverse-transcription polymerase chain reaction as well as high-throughput RNA sequencing. Results showed that T. marneffei infection could activate hPBDMs to the M1-like phenotype and trigger a potent induction of chemokine and pro-inflammatory cytokine production as well as the expression of other immunoregulatory genes. In contrast to hPBDMs, there was no detectable innate cytokine response against T. marneffei in human bronchial epithelial cells (hBECs). Using a green fluorescent protein-tagged T. marneffei strain and confocal microscopy, internalization of the fungus by hBECs was confirmed. Live cell imaging further demonstrated that the infected cells exhibited normal cellular physiology, especially that the process of cell division could be observed. Moreover, T. marneffei also survived better inside hBECs than hPBDMs. Our results illustrated a potential role of hBECs to serve as reservoir cells for T. marneffei to evade immunosurveillance by phagocytes, from which the fungus reactivates when the host immunity is weakened and causes infection. Such immunoevasion and reactivation may also help explain the long incubation period observed for talaromycosis, in particular the travel-related cases. IMPORTANCE Talaromyces marneffei is an important fungal pathogen especially in Southeast Asia. To understand the innate immune response to talaromycosis, a suitable infection model is needed. Here, we established an in vitro T. marneffei infection model using human peripheral blood-derived macrophages (hPBDMs). We then examined the transcriptomic changes of hPBDMs in response to T. marneffei infection with this model. We found that contact with T. marneffei could activate hPBDMs to the M1-like phenotype and induced mRNA expressions of five cytokines and eight immunoregulatory genes. Contrary to hPBDMs, such immunoresponse was not elicited in human bronchial epithelial cells (hBECs), despite normal physiology observed in infected cells. We also found that infected hBECs did not eliminate T. marneffei as efficiently as hPBDMs. Our observation suggested that hBECs may potentially serve as reservoir cells for T. marneffei to evade immunosurveillance. When the host immunity deteriorates later, then the fungus reactivates and causes infection.
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Affiliation(s)
- Yen-Pei Tan
- Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong, China
| | - Chi-Ching Tsang
- Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong, China
- School of Medical and Health Sciences, Tung Wah College, Homantin, Hong Kong, China
| | - Ka-Fai Chan
- Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong, China
| | - Siu-Leung Fung
- Tuberculosis and Chest Medicine Unit, Grantham Hospital, Aberdeen, Hong Kong, China
| | - Kin-Hang Kok
- Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong, China
| | - Susanna K. P. Lau
- Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong, China
| | - Patrick C. Y. Woo
- Department of Microbiology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pok Fu Lam, Hong Kong, China
- Doctoral Program in Translational Medicine and Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
- The iEGG and Animal Biotechnology Research Center, National Chung Hsing University, Taichung, Taiwan
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19
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Santamaria X, Roson B, Perez-Moraga R, Venkatesan N, Pardo-Figuerez M, Gonzalez-Fernandez J, Llera-Oyola J, Fernández E, Moreno I, Salumets A, Vankelecom H, Vilella F, Simon C. Decoding the endometrial niche of Asherman's Syndrome at single-cell resolution. Nat Commun 2023; 14:5890. [PMID: 37735465 PMCID: PMC10514053 DOI: 10.1038/s41467-023-41656-1] [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: 10/27/2022] [Accepted: 09/12/2023] [Indexed: 09/23/2023] Open
Abstract
Asherman's Syndrome is characterized by intrauterine adhesions or scarring, which cause infertility, menstrual abnormalities, and recurrent pregnancy loss. The pathophysiology of this syndrome remains unknown, with treatment restricted to recurrent surgical removal of intrauterine scarring, which has limited success. Here, we decode the Asherman's Syndrome endometrial cell niche by analyzing data from over 200,000 cells with single-cell RNA-sequencing in patients with this condition and through in vitro analyses of Asherman's Syndrome patient-derived endometrial organoids. Our endometrial atlas highlights the loss of the endometrial epithelium, alterations to epithelial differentiation signaling pathways such as Wnt and Notch, and the appearance of characteristic epithelium expressing secretory leukocyte protease inhibitor during the window of implantation. We describe syndrome-associated alterations in cell-to-cell communication and gene expression profiles that support a dysfunctional pro-fibrotic, pro-inflammatory, and anti-angiogenic environment.
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Affiliation(s)
- Xavier Santamaria
- Carlos Simon Foundation, INCLIVA Health Research Institute, Valencia, Spain.
- Department Ob/Gyn Vall d'Hebron Institut de Recerca, Barcelona, Spain.
| | - Beatriz Roson
- Carlos Simon Foundation, INCLIVA Health Research Institute, Valencia, Spain
| | - Raul Perez-Moraga
- Carlos Simon Foundation, INCLIVA Health Research Institute, Valencia, Spain
- Igenomix R&D, Valencia, Spain
| | - Nandakumar Venkatesan
- Department of Pediatrics Obstetrics & Gynecology, University of Valencia, Valencia, Spain
| | | | | | - Jaime Llera-Oyola
- Carlos Simon Foundation, INCLIVA Health Research Institute, Valencia, Spain
| | | | - Inmaculada Moreno
- Carlos Simon Foundation, INCLIVA Health Research Institute, Valencia, Spain
| | - Andres Salumets
- Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
- Competence Centre on Health Technologies, Tartu, Estonia
- Division of Obstetrics and Gynaecology, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden
| | - Hugo Vankelecom
- Department of Development and Regeneration, Cluster of Stem Cell and Developmental Biology, Unit of Stem Cell Research, University of Leuven (KU Leuven), Leuven, Belgium
| | - Felipe Vilella
- Carlos Simon Foundation, INCLIVA Health Research Institute, Valencia, Spain
| | - Carlos Simon
- Carlos Simon Foundation, INCLIVA Health Research Institute, Valencia, Spain.
- Department of Pediatrics Obstetrics & Gynecology, University of Valencia, Valencia, Spain.
- Department of Obstetrics and Gynecology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA.
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20
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Yuan J, Feng T, Guo Y, Luo K, Wu Q, Yu S, Zhou H. Global scientific trends update on macrophage polarization in rheumatoid arthritis: A bibliometric and visualized analysis from 2000 to 2022. Heliyon 2023; 9:e19761. [PMID: 37809950 PMCID: PMC10559075 DOI: 10.1016/j.heliyon.2023.e19761] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 08/22/2023] [Accepted: 08/31/2023] [Indexed: 10/10/2023] Open
Abstract
The goal of this work was to use bibliometric analysis to help guide future research on macrophage polarization in RA. We looked for studies on macrophage polarization in RA published between January 1, 2000, and December 31, 2022, in the WoSCC database. Research trends and hotspots were shown and assessed using VOSviewer and CiteSpace. A total of 181 articles were gathered. Belgium was among the early adopters of the field. Chinese institutes have produced the most research. Researchers such as Angel Luis Corb, Amaya Puig-Kröger, and Lizbeth Estrada-Capetillo have made major contributions to the field. Frontiers in Immunology has published the most study findings. According to VOSviewer, the most investigated immune cells, biomarkers, and signaling pathways in the previous three years have been "T cells", "gm-csf", and "nf-κb" in that order. We discovered that the most often used terms in the previous three years were "pathway", "oxidative stress", "extracellular capsule" and "nlrp3 inflammasome" using Citespace. We emphasize these concepts in our findings, presenting the exact mechanisms of pathophysiology related to macrophage polarization in RA, as well as current breakthroughs in therapy strategies.
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Affiliation(s)
- Jun Yuan
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Tong Feng
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Yanding Guo
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Kun Luo
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Qiaofeng Wu
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Shuguang Yu
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Haiyan Zhou
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
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21
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Zhou J, Georgas E, Su Y, Zhou J, Kröger N, Benn F, Kopp A, Qin Y, Zhu D. Evolution from Bioinert to Bioresorbable: In Vivo Comparative Study of Additively Manufactured Metal Bone Scaffolds. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302702. [PMID: 37424385 PMCID: PMC10502659 DOI: 10.1002/advs.202302702] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Indexed: 07/11/2023]
Abstract
Additively manufactured scaffolds offer significant potential for treating bone defects, owing to their porous, customizable architecture and functionalization capabilities. Although various biomaterials have been investigated, metals - the most successful orthopedic material - have yet to yield satisfactory results. Conventional bio-inert metals, such as titanium (Ti) and its alloys, are widely used for fixation devices and reconstructive implants, but their non-bioresorbable nature and the mechanical property mismatch with human bones limit their application as porous scaffolds for bone regeneration. Advancements in additive manufacturing have facilitated the use of bioresorbable metals, including magnesium (Mg), zinc (Zn), and their alloys, as porous scaffolds via Laser Powder Bed Fusion (L-PBF) technology. This in vivo study presents a comprehensive, side-by-side comparative analysis of the interactions between bone regeneration and additively manufactured bio-inert/bioresorbable metal scaffolds, as well as their therapeutic outcomes. The research offers an in-depth understanding of the metal scaffold-assisted bone healing process, illustrating that Mg and Zn scaffolds contribute to the bone healing process in distinct ways, but ultimately deliver superior therapeutic outcomes compared to Ti scaffolds. These findings suggest that bioresorbable metal scaffolds hold considerable promise for the clinical treatment of bone defects in the near future.
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Affiliation(s)
- Juncen Zhou
- Department of Biomedical EngineeringUniversity of Stony BrookStony BrookNY11794USA
| | - Elias Georgas
- Department of Biomedical EngineeringUniversity of Stony BrookStony BrookNY11794USA
| | - Yingchao Su
- Department of Biomedical EngineeringUniversity of Stony BrookStony BrookNY11794USA
| | - Jiayi Zhou
- Department of Biomedical EngineeringUniversity of Stony BrookStony BrookNY11794USA
| | - Nadja Kröger
- Division of Plastic‐Reconstructive‐ and Aesthetic SurgeryUniversity Hospital Cologne50937CologneGermany
| | | | | | - Yi‐Xian Qin
- Department of Biomedical EngineeringUniversity of Stony BrookStony BrookNY11794USA
| | - Donghui Zhu
- Department of Biomedical EngineeringUniversity of Stony BrookStony BrookNY11794USA
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22
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Žaloudíková M. Mechanisms and Effects of Macrophage Polarization and Its Specifics in Pulmonary Environment. Physiol Res 2023; 72:S137-S156. [PMID: 37565418 PMCID: PMC10660583 DOI: 10.33549/physiolres.935058] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 06/09/2023] [Indexed: 12/01/2023] Open
Abstract
Macrophages are a specific group of cells found in all body tissues. They have specific characteristics in each of the tissues that correspond to the functional needs of the specific environment. These cells are involved in a wide range of processes, both pro-inflammatory and anti-inflammatory ("wound healing"). This is due to their specific capacity for so-called polarization, a phenotypic change that is, moreover, partially reversible compared to other differentiated cells of the human body. This promises a wide range of possibilities for its influence and thus therapeutic use. In this article, we therefore review the mechanisms that cause polarization, the basic classification of polarized macrophages, their characteristic markers and the effects that accompany these phenotypic changes. Since the study of pulmonary (and among them mainly alveolar) macrophages is currently the focus of scientific interest of many researchers and these macrophages are found in very specific environments, given mainly by the extremely high partial pressure of oxygen compared to other locations, which specifically affects their behavior, we will focus our review on this group.
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Affiliation(s)
- M Žaloudíková
- Department of Physiology, Second Faculty of Medicine, Charles University, Prague, Czech Republic.
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23
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Cortés-Montoya V, Ortiz-Robles CD, Rivera-Maya OB, Palacios-Valladares JR, Ramirez-Gutierrez EF, Calderón-Aranda ES. The p,p'-DDE disturbs the M1 function without affecting the M2 phenotype nor unstimulated bone marrow-derived macrophages from BALB/c mice. Toxicology 2023; 493:153554. [PMID: 37236336 DOI: 10.1016/j.tox.2023.153554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 05/10/2023] [Accepted: 05/22/2023] [Indexed: 05/28/2023]
Abstract
DDT, a persistent organic pollutant, remains affecting human health worldwide. DDT and its most persistent metabolite (p,p'-DDE) negatively affect the immune response regulation and mechanisms involved in protecting against pathogens Such metabolite decreases the capability to limit intracellular growth of Mycobacterium microti and yeast. However, the effect on unstimulated (M0) and anti-inflammatory macrophages (M2) has been evaluated scanty. Herein, we evaluated the impact of p,p'-DDE at environmentally relevant concentrations (0.125, 1.25, 2.5, and 5 µg/mL) on bone marrow-derived macrophages stimulated with IFNγ+LPS to M1 or with IL-4 +IL-13 to M2. Thus we study whether the p,p'-DDE induces M0 to a specific phenotype or modulates activation of the macrophage phenotypes and explains, at least partly, the reported effects of p,p'-DDE on the M1 function. The p,p'-DDE did not affect the cell viability of M0 or the macrophage phenotypes. In M1, the p,p'-DDE decreased NO•- production and IL-1β secretion, but increasing cellular ROS and mitochondrial O2•-, but did not alter iNOS, TNF-α, MHCII, and CD86 protein expression nor affect M2 markers arginase activity, TGF-β1, and CD206; p,p'-DDE, did not affect marker expression in M0 or M2, supporting that its effects on M1 parameters are not dependent on M0 nor M2 modulation. The decreasing of NO•- production by the p,p'-DDE without altering iNOS levels, Arginase activity, or TNF-α, but increasing cellular ROS and mitochondrial O2 suggests that p,p'-DDE interferes with the iNOS function but not with its transcription. The p,p'-DDE decreasing of IL-1β secretion, without any effect on TNF-α, suggest that an alteration of specific targets involved in IL-1β secretion may be affected and related to ROS induction. The p,p'-DDE effect on iNOS function and the IL-1β secretion process, as the NLRP3 activation, deserves further study.
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Affiliation(s)
- Vanessa Cortés-Montoya
- Center for Research and Advanced Studies of the National Polytechnic Institute, Department of Toxicology, Ciudad de México, Mexico
| | - Christian D Ortiz-Robles
- Center for Research and Advanced Studies of the National Polytechnic Institute, Department of Toxicology, Ciudad de México, Mexico
| | - Omar B Rivera-Maya
- Center for Research and Advanced Studies of the National Polytechnic Institute, Department of Toxicology, Ciudad de México, Mexico
| | - José R Palacios-Valladares
- Center for Research and Advanced Studies of the National Polytechnic Institute, Department of Toxicology, Ciudad de México, Mexico
| | - Erick F Ramirez-Gutierrez
- Center for Research and Advanced Studies of the National Polytechnic Institute, Department of Toxicology, Ciudad de México, Mexico
| | - Emma S Calderón-Aranda
- Center for Research and Advanced Studies of the National Polytechnic Institute, Department of Toxicology, Ciudad de México, Mexico.
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24
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Peng Y, Zhou M, Yang H, Qu R, Qiu Y, Hao J, Bi H, Guo D. Regulatory Mechanism of M1/M2 Macrophage Polarization in the Development of Autoimmune Diseases. Mediators Inflamm 2023; 2023:8821610. [PMID: 37332618 PMCID: PMC10270764 DOI: 10.1155/2023/8821610] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 04/21/2023] [Accepted: 05/23/2023] [Indexed: 06/20/2023] Open
Abstract
Macrophages are innate immune cells in the organism and can be found in almost tissues and organs. They are highly plastic and heterogeneous cells and can participate in the immune response, thereby playing a crucial role in maintaining the immune homeostasis of the body. It is well known that undifferentiated macrophages can polarize into classically activated macrophages (M1 macrophages) and alternatively activated macrophages (M2 macrophages) under different microenvironmental conditions. The directions of macrophage polarization can be regulated by a series of factors, including interferon, lipopolysaccharide, interleukin, and noncoding RNAs. To elucidate the role of macrophages in various autoimmune diseases, we searched the literature on macrophages with the PubMed database. Search terms are as follows: macrophages, polarization, signaling pathways, noncoding RNA, inflammation, autoimmune diseases, systemic lupus erythematosus, rheumatoid arthritis, lupus nephritis, Sjogren's syndrome, Guillain-Barré syndrome, and multiple sclerosis. In the present study, we summarize the role of macrophage polarization in common autoimmune diseases. In addition, we also summarize the features and recent advances with a particular focus on the immunotherapeutic potential of macrophage polarization in autoimmune diseases and the potentially effective therapeutic targets.
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Affiliation(s)
- Yuan Peng
- Shandong University of Traditional Chinese Medicine, Jinan 250002, China
| | - Mengxian Zhou
- Shandong University of Traditional Chinese Medicine, Jinan 250002, China
| | - Hong Yang
- Qingdao Traditional Chinese Medicine Hospital (Qingdao Hiser Hospital), Qingdao 266033, China
| | - Ruyi Qu
- Shandong University of Traditional Chinese Medicine, Jinan 250002, China
| | - Yan Qiu
- The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250002, China
| | - Jiawen Hao
- Shandong University of Traditional Chinese Medicine, Jinan 250002, China
| | - Hongsheng Bi
- Shandong Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases; Shandong Academy of Eye Disease Prevention and Therapy, Medical College of Optometry and Ophthalmology, Shandong University of Traditional Chinese Medicine, Jinan 250002, China
| | - Dadong Guo
- Shandong Provincial Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Therapy of Ocular Diseases; Shandong Academy of Eye Disease Prevention and Therapy, Medical College of Optometry and Ophthalmology, Shandong University of Traditional Chinese Medicine, Jinan 250002, China
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25
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Fan W, Fu D, Zhang L, Xiao Z, Shen X, Chen J, Qi X. Enoxaparin sodium bone cement plays an anti-inflammatory immunomodulatory role by inducing the polarization of M2 macrophages. J Orthop Surg Res 2023; 18:380. [PMID: 37221568 DOI: 10.1186/s13018-023-03865-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/18/2023] [Indexed: 05/25/2023] Open
Abstract
OBJECTIVE The implantation of PMMA bone cement results in an immune response and the release of PMMA bone cement particles causes an inflammatory cascade. Our study discovered that ES-PMMA bone cement can induce M2 polarization of macrophages, which has an anti-inflammatory immunomodulatory effect. We also delved into the molecular mechanisms that underlie this process. METHODS In this study, we designed and prepared samples of bone cement. These included PMMA bone cement samples and ES-PMMA bone cement samples, which were implanted into the back muscles of rats. At 3, 7, and 14 days after the operation, we removed the bone cement and a small amount of surrounding tissue. We then performed immunohistochemistry and immunofluorescence to observe the polarization of macrophages and the expression of related inflammatory factors in the surrounding tissues. The RAW264.7 cells were exposed to lipopolysaccharide (LPS) for 24 h to establish the macrophage inflammation model. Then, each group was treated with enoxaparin sodium medium, PMMA bone cement extract medium, and ES-PMMA bone cement extract medium, respectively, and cultured for another 24 h. We collected cells from each group and used flow cytometry to detect the expressions of CD86 and CD206 in macrophages. Additionally, we performed RT-qPCR to determine the mRNA levels of three markers of M1 macrophages (TNF-α, IL-6, iNOS) and two M2 macrophage markers (Arg-1, IL-10). Furthermore, we analyzed the expression of TLR4, p-NF-κB p65, and NF-κB p65 through Western blotting. RESULTS The immunofluorescence results indicate that the ES-PMMA group exhibited an upregulation of CD206, an M2 marker, and a downregulation of CD86, an M1 marker, in comparison to the PMMA group. Additionally, the immunohistochemistry results revealed that the levels of IL-6 and TNF-α expression were lower in the ES-PMMA group than in the PMMA group, while the expression level of IL-10 was higher in the ES-PMMA group. Flow cytometry and RT-qPCR analyses revealed that the expression of M1-type macrophage marker CD86 was significantly elevated in the LPS group compared to the NC group. Additionally, M1-type macrophage-related cytokines TNF-α, IL-6, and iNOS were also found to be increased. However, in the LPS + ES group, the expression levels of CD86, TNF-α, IL-6, and iNOS were decreased, while the expression of M2-type macrophage markers CD206 and M2-type macrophage-related cytokines (IL-10, Arg-1) were increased compared to the LPS group. In comparison to the LPS + PMMA group, the LPS + ES-PMMA group demonstrated a down-regulation of CD86, TNF-α, IL-6, and iNOS expression levels, while increasing the expression levels of CD206, IL-10, and Arg-1. Western blotting results revealed a significant decrease in TLR4/GAPDH and p-NF-κB p65/NF-κB p65 in the LPS + ES group when compared to the LPS group. Additionally, the LPS + ES-PMMA group exhibited a decrease in TLR4/GAPDH and p-NF-κB p65/NF-κB p65 levels when compared to the LPS + PMMA group. CONCLUSION ES-PMMA bone cement is more effective than PMMA bone cement in down-regulating the expression of the TLR4/NF-κB signaling pathway. Additionally, it induces macrophages to polarize towards the M2 phenotype, making it a crucial player in anti-inflammatory immune regulation.
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Affiliation(s)
- Weiye Fan
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Li Zhang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Zhihang Xiao
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Xiaoyu Shen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Jianchao Chen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Xiangbei Qi
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China.
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26
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Stinson MW, Laurenson AJ, Rotty JD. Macrophage migration is differentially regulated by distinct ECM components. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.27.538597. [PMID: 37162935 PMCID: PMC10168351 DOI: 10.1101/2023.04.27.538597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Macrophages are indispensable for proper immune surveillance and inflammatory regulation. They also exhibit dramatic phenotypic plasticity and are highly responsive to their local microenvironment, which includes the extracellular matrix (ECM). The present work demonstrates that two fibrous ECM glycoproteins, fibronectin (FN) and laminin (LAM), elicit distinct morphological and migratory responses to macrophages in 2D environments. Laminin 111 inhibits macrophage cell spreading, but drives them to migrate rapidly and less persistently compared to cells on fibronectin. Differential integrin engagement and ROCK/myosin II organization helps explain why macrophages alter their morphology and migration character on these two ECM components. The present study also demonstrates that laminin 111 exerts a suppressive effect toward fibronectin, as macrophages plated on a LAM/FN mixture adopt a morphology and migratory character almost identical to LAM alone. This suggests that distinct responses can be initiated downstream of receptor-ECM engagement, and that one component of the microenvironment may affect the cell's ability to sense another. Overall, macrophages appear intrinsically poised to rapidly switch between distinct migratory modes based on their ECM environments. The role of ECM composition in dictating motile and inflammatory responses in 3D and in vivo contexts warrants further study.
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27
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Ghebremedhin A, Salam AB, Adu-Addai B, Noonan S, Stratton R, Ahmed MSU, Khantwal C, Martin GR, Lin H, Andrews C, Karanam B, Rudloff U, Lopez H, Jaynes J, Yates C. A Novel CD206 Targeting Peptide Inhibits Bleomycin-Induced Pulmonary Fibrosis in Mice. Cells 2023; 12:cells12091254. [PMID: 37174654 PMCID: PMC10177262 DOI: 10.3390/cells12091254] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/09/2023] [Accepted: 04/13/2023] [Indexed: 05/15/2023] Open
Abstract
Activated M2-polarized macrophages are drivers of pulmonary fibrosis in several clinical scenarios, including Idiopathic Pulmonary Fibrosis (IPF). In this study, we investigated the effects of targeting the CD206 receptor in M2-like macrophages with a novel synthetic analogue of a naturally occurring Host Defense Peptide (HDP), RP-832c, to decrease profibrotic cytokines. RP-832c selectively binds to CD206 on M2-polarized bone marrow-derived macrophages (BMDM) in vitro, resulting in a time-dependent decrease in CD206 expression and a transient increase in M1-macrophage marker TNF-α. To elucidate the antifibrotic effects of RP-832c, we used a murine model of bleomycin (BLM)-induced early-stage pulmonary fibrosis. RP-832c significantly reduced fibrosis in a dose-dependent manner, and decreased CD206, TGF-β1, and α-SMA expression in mouse lungs. Similarly, in an established model of lung fibrosis, RP-832c significantly decreased lung fibrosis and significantly decreased inflammatory cytokines TNF-α, IL-6, IL-10, IFN-γ, CXCL1/2, and fibrosis markers TGF-β1 and MMP-13. In comparison with the FDA-approved drugs Nintedanib and Pirfenidone, RP-832c exhibited a similar reduction in fibrosis compared to Pirfenidone, and to a greater extent than Nintedanib, with no apparent toxicities observed. In summary, our findings showed that inhibiting the profibrotic alternatively activated M2-like macrophages using a novel peptide, RP-832c, could reduce BLM-induced pulmonary fibrosis in mice, warranting the therapeutic potential of this peptide for patients with pulmonary fibrosis.
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Affiliation(s)
| | - Ahmad Bin Salam
- Department of Biology and Center for Cancer Research, Tuskegee University, Carver Research Foundation, Tuskegee, AL 36088, USA
| | - Benjamin Adu-Addai
- Department of Pathobiology, College of Veterinary Medicine, Tuskegee University, Tuskegee, AL 36088, USA
| | - Steve Noonan
- Murigenics Inc., 941 Railroad Ave., Vallejo, CA 94592, USA
| | - Richard Stratton
- Royal Free Hospital, UCL Division of Medicine, University College London, London WC1E 6JF, UK
| | - Md Shakir Uddin Ahmed
- Department of Biology and Center for Cancer Research, Tuskegee University, Carver Research Foundation, Tuskegee, AL 36088, USA
- Bangladesh Council of Scientific and Industrial Research, Dhaka 1205, Bangladesh
| | | | - George R Martin
- Riptide Bioscience, 941 Railroad Ave., Vallejo, CA 94592, USA
| | - Huixian Lin
- Department of Biology and Center for Cancer Research, Tuskegee University, Carver Research Foundation, Tuskegee, AL 36088, USA
| | - Chris Andrews
- Department of Biology and Center for Cancer Research, Tuskegee University, Carver Research Foundation, Tuskegee, AL 36088, USA
| | - Balasubramanyam Karanam
- Department of Biology and Center for Cancer Research, Tuskegee University, Carver Research Foundation, Tuskegee, AL 36088, USA
| | - Udo Rudloff
- Rare Tumor Initiative, Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Henry Lopez
- Murigenics Inc., 941 Railroad Ave., Vallejo, CA 94592, USA
| | - Jesse Jaynes
- College of Agriculture, Environment and Nutrition Sciences, Tuskegee University, Tuskegee, AL 36088, USA
| | - Clayton Yates
- Department of Biology and Center for Cancer Research, Tuskegee University, Carver Research Foundation, Tuskegee, AL 36088, USA
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28
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Brady RV, Thamm DH. Tumor-associated macrophages: Prognostic and therapeutic targets for cancer in humans and dogs. Front Immunol 2023; 14:1176807. [PMID: 37090720 PMCID: PMC10113558 DOI: 10.3389/fimmu.2023.1176807] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 03/24/2023] [Indexed: 04/08/2023] Open
Abstract
Macrophages are ancient, phagocytic immune cells thought to have their origins 500 million years ago in metazoan phylogeny. The understanding of macrophages has evolved to encompass their foundational roles in development, homeostasis, tissue repair, inflammation, and immunity. Notably, macrophages display high plasticity in response to environmental cues, capable of a strikingly wide variety of dynamic gene signatures and phenotypes. Macrophages are also involved in many pathological states including neural disease, asthma, liver disease, heart disease, cancer, and others. In cancer, most tumor-associated immune cells are macrophages, coined tumor-associated macrophages (TAMs). While some TAMs can display anti-tumor properties such as phagocytizing tumor cells and orchestrating an immune response, most macrophages in the tumor microenvironment are immunosuppressive and pro-tumorigenic. Macrophages have been implicated in all stages of cancer. Therefore, interest in manipulating macrophages as a therapeutic strategy against cancer developed as early as the 1970s. Companion dogs are a strong comparative immuno-oncology model for people due to documented similarities in the immune system and spontaneous cancers between the species. Data from clinical trials in humans and dogs can be leveraged to further scientific advancements that benefit both species. This review aims to provide a summary of the current state of knowledge on macrophages in general, and an in-depth review of macrophages as a therapeutic strategy against cancer in humans and companion dogs.
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Affiliation(s)
- Rachel V. Brady
- Cell and Molecular Biology Graduate Program, Colorado State University, Fort Collins, CO, United States
| | - Douglas H. Thamm
- Cell and Molecular Biology Graduate Program, Colorado State University, Fort Collins, CO, United States
- Flint Animal Cancer Center, Colorado State University, Fort Collins, CO, United States
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29
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Immunity orchestrates a bridge in gut-brain axis of neurodegenerative diseases. Ageing Res Rev 2023; 85:101857. [PMID: 36669690 DOI: 10.1016/j.arr.2023.101857] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 01/15/2023] [Accepted: 01/15/2023] [Indexed: 01/18/2023]
Abstract
Neurodegenerative diseases, in particular for Alzheimer's disease (AD), Parkinson's disease (PD) and Multiple sclerosis (MS), are a category of diseases with progressive loss of neuronal structure or function (encompassing neuronal death) leading to neuronal dysfunction, whereas the underlying pathogenesis remains to be clarified. As the microbiological ecosystem of the intestinal microbiome serves as the second genome of the human body, it is strongly implicated as an essential element in the initiation and/or progression of neurodegenerative diseases. Nevertheless, the precise underlying principles of how the intestinal microflora impact on neurodegenerative diseases via gut-brain axis by modulating the immune function are still poorly characterized. Consequently, an overview of initiating the development of neurodegenerative diseases and the contribution of intestinal microflora on immune function is discussed in this review.
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Yousaf H, Khan MIU, Ali I, Munir MU, Lee KY. Emerging role of macrophages in non-infectious diseases: An update. Biomed Pharmacother 2023; 161:114426. [PMID: 36822022 DOI: 10.1016/j.biopha.2023.114426] [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: 01/04/2023] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 02/23/2023] Open
Abstract
In the past three decades, a huge body of evidence through various research studies conducted on animal models, has demonstrated that the macrophages are centralized of all the leukocytes involved in diseases and, particularly, their role in non-infectious diseases has been studied extensively for which they have also been referred to as the "double-edged swords". The most versatile of all immunocytes, macrophages play a key role in health and diseases. Various experimental models have demonstrated the conventional paradigms such as the M1/M2 dichotomy, which is not as obvious and presents a complex characterization of the macrophages in the disease immunology. In human diseases, this M1-M2 continuum shows a complex web of mechanisms, which are majorly divided into the pro-inflammatory roles (derived mainly by the cytokines: IL-1, IL-6, IL-12, IL-23, and tumor necrosis factor) and anti-inflammatory roles (CCl-17, CCl-22, CCL-2, transforming growth factor (TGF), and interleukin-10), which are involved in the wound healing and pathogen-suppression. The conventional division of these macrophages as M1 and M2 is derived from the opposing functions of these macrophages; where M1 is involved in the tissue damage and pro-inflammatory roles and M2 promotes cell proliferation and the resolution of inflammation. Both these pathways down-regulate each other in diseases through a plethora of enzymatic and cytokine mediators.
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Affiliation(s)
- Hassan Yousaf
- Institute of Molecular Biology and Biotechnology (IMBB), University of Lahore, Lahore, Pakistan
| | - Malik Ihsan Ullah Khan
- Institute of Molecular Biology and Biotechnology (IMBB), University of Lahore, Lahore, Pakistan.
| | - Iftikhar Ali
- Department of Life Sciences, University of Management and Technology, Lahore, Pakistan
| | - Muhammad Usman Munir
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University Sakaka, Aljouf 72388, Saudi Arabia
| | - Ka Yiu Lee
- Swedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Ostersund, Sweden.
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Cancer Immunology: Impact of Radioembolization of Hepatocellular Carcinoma on Immune Response Modulation. AJR Am J Roentgenol 2023; 220:863-872. [PMID: 36752368 DOI: 10.2214/ajr.22.28800] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Hepatocellular carcinoma (HCC) is the most prevalent primary liver cancer and the fourth most common cause of cancer mortality. The tumor microenvironment (TME) is increasingly recognized as having a central role in HCC carcinogenesis, with factors such as tumor and immune cell interactions, cytokines, and extracellular matrix serving key roles. Transarterial radioembolization (TARE) is a locoregional therapy for HCC that not only has a direct tumoricidal effect, but induces an immune response against tumor cells with subsequent immunogenic cell death. This TARE-induced tumor immunogenicity occurs through enhancement of tumor-associated antigen expression, as well as recruitment and diversification of tumor-infiltrating lymphocytes. In addition, immunologically related biomarkers, including the neutrophil-to-lymphocyte ratio, lymphocyte count, and cytokine levels, may be useful tools to predict outcomes after TARE. Early data are promising regarding the potential synergistic benefit from treatment algorithms that combine TARE and immunotherapies, and interest is growing in the clinical application of such combinations. This review provides an overview of cancer immunology, summarizes the available data regarding the biologic effects of TARE on local and systemic immune responses, and explores the potential role of the combination of TARE and immunotherapy for HCC.
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Host antibacterial defense of 6-10 Gy γ-irradiated mice subjected to lentiviral vector-based Gas5 gene therapy. Gene Ther 2023; 30:172-179. [PMID: 33262512 DOI: 10.1038/s41434-020-00211-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 10/23/2020] [Accepted: 11/11/2020] [Indexed: 11/08/2022]
Abstract
Gut bacteria-associated sepsis is a serious concern in patients with gastrointestinal acute radiation syndrome (GIARS). In our previous studies, all mice exposed to 8 Gy of whole body γ-irradiation (8 Gy GIARS-mice) died by sepsis stemming from bacterial translocation. M1Mϕ located in the bacterial translocation site (i.e., the mesenteric lymph nodes, MLNs) have been characterized as major antibacterial effector cells. However, M2bMϕ, inhibitor cells for M1Mϕ polarization, predominated in the MLNs of these mice. The reduced expression of long noncoding RNA Gas5 was associated with M2bMϕ polarization. In this study, we tried to reduce the mortality rate of 8 Gy GIARS-mice through Gas5 gene transduction using lentivirus (Gas5 lentivirus). After Gas5 lentivirus injection, Gas5 RNA was overexpressed in MLN-F4/80+ cells of 8 Gy GIARS-mice, and these cells were identified as non-M2bMϕ. All of the 8 Gy GIARS-mice injected with Gas5 lentivirus survived 30 days or more after irradiation, and bacterial translocation and subsequent sepsis were shown to be minimal in these mice. These results indicate that the antibacterial resistance of 8 Gy GIASR-mice can be restored through the modulation of M2bMϕ located in the bacterial translocation site by Gas5 transduction.
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Jin Z, Luo Y, Zhao H, Cui J, He W, Li J, Pi J, Qing L, Wu W. Qingre Huoxue Decoction regulates macrophage polarisation to attenuate atherosclerosis through the inhibition of NF-κB signalling-mediated inflammation. JOURNAL OF ETHNOPHARMACOLOGY 2023; 301:115787. [PMID: 36206868 DOI: 10.1016/j.jep.2022.115787] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Atherosclerosis (AS) is a common pathogenesis of cardiovascular diseases. Qingre Huoxue Decoction (QRHX) is an herbal formula used for the prevention and treatment of AS. However, the potential mechanism of QRHX is not clear. AIM OF THE STUDY In our study, RNA sequencing combined with preclinical models were used to analyse the effect and mechanism of QRHX for the treatment of AS. MATERIALS AND METHODS For in vivo studies, ApoE-/- mice were fed with a high-fat diet to induce AS. We measured weight, blood lipid, inflammatory cytokines, lipid deposition, plaque, and the M1/M2 macrophage. For in vitro studies, RAW264.7 were induced by lipopolysaccharides and treated with different concentrations of QRHX. We focusd on the relationship between QRHX, the NF-κB pathway, and macrophage polarisation, and performed simultaneous RNA sequencing both in vivo and in vitro. RESULTS In vivo, QRHX decreased weight, improved blood lipid, relieved the degree of lipid deposition, reduced plaque area, decreased the levels of inflammatory cytokines (MCP-1, NLRP3, and TNFα), down-regulated the expression of iNOS, and up-regulated the expression of Arg-1. In vitro, QRHX down-regulated M1 markers, iNOS and CCR7, with lower concentrations of IL-1β; furthermore, QRHX up-regulated M2 markers, Arg-1, CD163, Ym-1, and Fizz-1, with higher concentrations of IL-4 and IL-10. RNA sequencing of both samples in vivo and in vitro suggested that NF-κB was the target pathway of QRHX to regulate macrophage polarisation; this result was validated at the gene and protein levels. CONCLUSIONS QRHX induced M2 polarisation, reduced an inflammatory response, and played a role in stabilising plaque by mediating the NF-κB signalling pathway.
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Affiliation(s)
- Zheng Jin
- Department of Cardiology and Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Yuan Luo
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Huanyi Zhao
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Jiayan Cui
- Department of Cardiology and Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, 510280, China
| | - Weifeng He
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Junlong Li
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China
| | - Jianbin Pi
- Foshan Hospital of Traditional Chinese Medicine, Foshan, Guangdong, 528099, China
| | - Lijin Qing
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China.
| | - Wei Wu
- First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510405, China.
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Deycmar S, Gomes B, Charo J, Ceppi M, Cline JM. Spontaneous, naturally occurring cancers in non-human primates as a translational model for cancer immunotherapy. J Immunother Cancer 2023; 11:jitc-2022-005514. [PMID: 36593067 PMCID: PMC9808758 DOI: 10.1136/jitc-2022-005514] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/05/2022] [Indexed: 01/03/2023] Open
Abstract
The complexity of cancer immunotherapy (CIT) demands reliable preclinical models to successfully translate study findings to the clinics. Non-human primates (NHPs; here referring to rhesus and cynomolgus macaques) share broad similarities with humans including physiology, genetic homology, and importantly also immune cell populations, immune regulatory mechanisms, and protein targets for CIT. Furthermore, NHP naturally develop cancers such as colorectal and breast cancer with an incidence, pathology, and age pattern comparable to humans. Thus, these tumor-bearing monkeys (TBMs) have the potential to bridge the experimental gap between early preclinical cancer models and patients with human cancer.This review presents our current knowledge of NHP immunology, the incidence and features of naturally-occurring cancers in NHP, and recent TBM trials investigating CIT to provide a scientific rationale for this unique model for human cancer.
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Affiliation(s)
- Simon Deycmar
- Department of Pathology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Bruno Gomes
- Roche Pharmaceutical Research and Early Development Oncology, Roche Innovation Center Basel, Basel, Switzerland
| | - Jehad Charo
- Roche Pharmaceutical Research and Early Development Oncology, Roche Innovation Center Zurich, Schlieren, Switzerland
| | - Maurizio Ceppi
- Roche Pharmaceutical Research and Early Development Oncology, Roche Innovation Center Basel, Basel, Switzerland,iTeos Therapeutics Inc, Watertown, Massachusetts, USA
| | - J Mark Cline
- Department of Pathology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
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Hakeem AN, Kamal MM, Tawfiq RA, Abdelrahman BA, Hammam OA, Elmazar MM, El-Khatib AS, Attia YM. Elafibranor modulates ileal macrophage polarization to restore intestinal integrity in NASH: Potential crosstalk between ileal IL-10/STAT3 and hepatic TLR4/NF-κB axes. Biomed Pharmacother 2023; 157:114050. [PMID: 36462310 DOI: 10.1016/j.biopha.2022.114050] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 11/17/2022] [Accepted: 11/25/2022] [Indexed: 12/02/2022] Open
Abstract
Experimental and clinical evidence implicate disrupted gut barrier integrity in provoking innate immune responses, specifically macrophages, towards the progression of non-alcoholic steatohepatitis (NASH). Peroxisome proliferator-activated receptors (PPARs), a subset of the nuclear receptor superfamily, act to fine-tune several metabolic and inflammatory processes implicated in NASH. As such, the current study was carried out to decipher the potential role of dual PPAR α/δ activation using elafibranor (ELA) on ileal macrophage polarization (MP) and its likely impact on the liver in a NASH setting. To achieve this aim, an in vitro NASH model using fat-laden HepG2 cells was first used to validate the impact of ELA on hepatic fat accumulation. Afterwards, ELA was used in a combined model of dietary NASH and chronic colitis analogous to the clinical presentation of NASH parallel with intestinal barrier dysfunction. ELA mitigated fat accumulation in vitro as evidenced by Oil Red-O staining and curbed triglyceride levels. Additionally, ELA restored the expression of tight junctional proteins, claudin-1 and occludin, along with decreasing intestinal permeability and inflammation skewing ileal macrophages towards the M2 phenotype, as indicated by boosted arginase-1 (Arg1) and curtailed inducible nitric oxide synthase (iNOS) expression levels. These changes were aligned with a modulation in hepatic toll-like receptor-4 (TLR4)/nuclear factor kappa B (NF-κB) along with ileal interleukin-10 (IL-10)/signal transducer and activator of transcription-3 (STAT3) axes. Overall, the present findings suggest that the dual PPAR α/δ agonist, ELA, may drive MP in the ileum towards the M2 phenotype improving intestinal integrity towards alleviating NASH.
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Affiliation(s)
- Andrew N Hakeem
- Department of Pharmacology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt; The Center for Drug Research and Development (CDRD), Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Mohamed M Kamal
- The Center for Drug Research and Development (CDRD), Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt; Department of Biochemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt; Department of Biochemistry, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Rasha A Tawfiq
- Department of Pharmacology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt; The Center for Drug Research and Development (CDRD), Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Basma A Abdelrahman
- Department of Pharmacology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt; The Center for Drug Research and Development (CDRD), Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Olfat A Hammam
- Department of Pathology, Theodor Bilharz Research Institute, Giza, Egypt
| | - Mohamed M Elmazar
- Department of Pharmacology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt; The Center for Drug Research and Development (CDRD), Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Aiman S El-Khatib
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Yasmeen M Attia
- Department of Pharmacology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt; The Center for Drug Research and Development (CDRD), Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt.
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Esnault S, Jarjour NN. Development of Adaptive Immunity and Its Role in Lung Remodeling. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1426:287-351. [PMID: 37464127 DOI: 10.1007/978-3-031-32259-4_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Asthma is characterized by airflow limitations resulting from bronchial closure, which can be either reversible or fixed due to changes in airway tissue composition and structure, also known as remodeling. Airway remodeling is defined as increased presence of mucins-producing epithelial cells, increased thickness of airway smooth muscle cells, angiogenesis, increased number and activation state of fibroblasts, and extracellular matrix (ECM) deposition. Airway inflammation is believed to be the main cause of the development of airway remodeling in asthma. In this chapter, we will review the development of the adaptive immune response and the impact of its mediators and cells on the elements defining airway remodeling in asthma.
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Li F, Crumley K, Bealer E, King JL, Saito E, Grimany-Nuno O, Yolcu ES, Shirwan H, Shea LD. Fas Ligand-Modified Scaffolds Protect Stem Cell Derived β-Cells by Modulating Immune Cell Numbers and Polarization. ACS APPLIED MATERIALS & INTERFACES 2022; 15:50549-50559. [PMID: 36533683 DOI: 10.1021/acsami.2c12939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Stem cell derived β-cells have demonstrated the potential to control blood glucose levels and represent a promising treatment for Type 1 diabetes (T1D). Early engraftment post-transplantation and subsequent maturation of these β-cells are hypothesized to be limited by the initial inflammatory response, which impacts the ability to sustain normoglycemia for long periods. We investigated the survival and development of immature hPSC-derived β-cells transplanted on poly(lactide-co-glycolide) (PLG) microporous scaffolds into the peritoneal fat, a site being considered for clinical translation. The scaffolds were modified with biotin for binding of a streptavidin-FasL (SA-FasL) chimeric protein to modulate the local immune cell responses. The presence of FasL impacted infiltration of monocytes and neutrophils and altered the immune cell polarization. Conditioned media generated from SA-FasL scaffolds explanted at day 4 post-transplant did not impact hPSC-derived β-cell survival and maturation in vitro, while these responses were reduced with conditioned media from control scaffolds. Following transplantation, β-cell viability and differentiation were improved with SA-FasL modification. A sustained increase in insulin positive cell ratio was observed with SA-FasL-modified scaffolds relative to control scaffolds. These results highlight that the initial immune response can significantly impact β-cell engraftment, and modulation of cell infiltration and polarization may be a consideration for supporting long-term function at an extrahepatic site.
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Affiliation(s)
- Feiran Li
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kelly Crumley
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Elizabeth Bealer
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jessica L King
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Eiji Saito
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Orlando Grimany-Nuno
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Esma S Yolcu
- Department of Child Health and Molecular Microbiology and Immunology, University of Missouri, Columbia, Missouri 65211, United States
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Haval Shirwan
- Department of Child Health and Molecular Microbiology and Immunology, University of Missouri, Columbia, Missouri 65211, United States
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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Park J, Jang J, Cha SR, Baek H, Lee J, Hong SH, Lee HA, Lee TJ, Yang SR. L-carnosine Attenuates Bleomycin-Induced Oxidative Stress via NFκB Pathway in the Pathogenesis of Pulmonary Fibrosis. Antioxidants (Basel) 2022; 11:antiox11122462. [PMID: 36552670 PMCID: PMC9774395 DOI: 10.3390/antiox11122462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Idiopathic Pulmonary fibrosis (IPF), a chronic interstitial lung disease, has pulmonary manifestations clinically characterized by collagen deposition, epithelial cell injury, and a decline in lung function. L-carnosine, a dipeptide consisting of β-alanine and L-histidine, has demonstrated a therapeutic effect on various diseases because of its pivotal function. Despite the effect of L-carnosine in experimental IPF mice, its anti-oxidative effect and associated intercellular pathway, particularly alveolar epithelial cells, remain unknown. Therefore, we demonstrated the anti-fibrotic and anti-inflammatory effects of L-carnosine via Reactive oxygen species (ROS) regulation in bleomycin (BLM)-induced IPF mice. The mice were intratracheally injected with BLM (3 mg/kg) and L-carnosine (150 mg/kg) was orally administrated for 2 weeks. BLM exposure increased the protein level of Nox2, Nox4, p53, and Caspase-3, whereas L-carnosine treatment suppressed the protein level of Nox2, Nox4, p53, and Caspase-3 cleavage in mice. In addition, the total SOD activity and mRNA level of Sod2, catalase, and Nqo1 increased in mice treated with L-carnosine. At the cellular level, a human fibroblast (MRC-5) and mouse alveolar epithelial cell (MLE-12) were exposed to TGFβ1 following L-carnosine treatment to induce fibrogenesis. Moreover, MLE-12 cells were exposed to cigarette smoke extract (CSE). Consequently, L-carnosine treatment ameliorated fibrogenesis in fibroblasts and alveolar epithelial cells, and inflammation induced by ROS and CSE exposure was ameliorated. These results were associated with the inhibition of the NFκB pathway. Collectively, our data indicate that L-carnosine induces anti-inflammatory and anti-fibrotic effects on alveolar epithelial cells against the pathogenesis of IPF.
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Affiliation(s)
- Jaehyun Park
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Gangwondaehakgil l, Chuncheon 24341, Gangwon, Republic of Korea
| | - Jimin Jang
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Gangwondaehakgil l, Chuncheon 24341, Gangwon, Republic of Korea
| | - Sang-Ryul Cha
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Gangwondaehakgil l, Chuncheon 24341, Gangwon, Republic of Korea
| | - Hyosin Baek
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Gangwondaehakgil l, Chuncheon 24341, Gangwon, Republic of Korea
| | - Jooyeon Lee
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Gangwondaehakgil l, Chuncheon 24341, Gangwon, Republic of Korea
| | - Seok-Ho Hong
- Department of Internal Medicine, School of Medicine, Kangwon National University, Gangwondaehakgil 1, Chuncheon 24341, Gangwon, Republic of Korea
| | - Hyang-Ah Lee
- Department of Obstetrics and Gynecology, School of Medicine, Kangwon National University, Gangwondaehakgil 1, Chuncheon 24341, Gangwon, Republic of Korea
| | - Tae-Jin Lee
- Department of Bio-Health Convergence, Kangwon National University, Chuncheon 24341, Gangwon, Republic of Korea
- Correspondence: (T.-J.L.); (S.-R.Y.); Tel.: +82-33-250-6481 (T.-J.L.); 82-33-250-7883 (S.-R.Y.)
| | - Se-Ran Yang
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Kangwon National University, Gangwondaehakgil l, Chuncheon 24341, Gangwon, Republic of Korea
- Correspondence: (T.-J.L.); (S.-R.Y.); Tel.: +82-33-250-6481 (T.-J.L.); 82-33-250-7883 (S.-R.Y.)
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Fu SP, Chen SY, Pang QM, Zhang M, Wu XC, Wan X, Wan WH, Ao J, Zhang T. Advances in the research of the role of macrophage/microglia polarization-mediated inflammatory response in spinal cord injury. Front Immunol 2022; 13:1014013. [PMID: 36532022 PMCID: PMC9751019 DOI: 10.3389/fimmu.2022.1014013] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/18/2022] [Indexed: 12/04/2022] Open
Abstract
It is often difficult to regain neurological function following spinal cord injury (SCI). Neuroinflammation is thought to be responsible for this failure. Regulating the inflammatory response post-SCI may contribute to the recovery of neurological function. Over the past few decades, studies have found that macrophages/microglia are one of the primary effector cells in the inflammatory response following SCI. Growing evidence has documented that macrophages/microglia are plastic cells that can polarize in response to microenvironmental signals into M1 and M2 macrophages/microglia. M1 produces pro-inflammatory cytokines to induce inflammation and worsen tissue damage, while M2 has anti-inflammatory activities in wound healing and tissue regeneration. Recent studies have indicated that the transition from the M1 to the M2 phenotype of macrophage/microglia supports the regression of inflammation and tissue repair. Here, we will review the role of the inflammatory response and macrophages/microglia in SCI and repair. In addition, we will discuss potential molecular mechanisms that induce macrophage/microglia polarization, with emphasis on neuroprotective therapies that modulate macrophage/microglia polarization, which will provide new insights into therapeutic strategies for SCI.
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Affiliation(s)
- Sheng-Ping Fu
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China,Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Si-Yu Chen
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Qi-Ming Pang
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Meng Zhang
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Xiang-Chong Wu
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Xue Wan
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China,Collaborative Innovation Center of Chinese Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
| | - Wei-Hong Wan
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China,Collaborative Innovation Center of Chinese Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China
| | - Jun Ao
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Tao Zhang
- Key Laboratory of Cell Engineering of Guizhou Province, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China,Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China,Collaborative Innovation Center of Chinese Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China,The Clinical Stem Cell Research Institute, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China,*Correspondence: Tao Zhang,
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40
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Pan G, Zhang P, Yang J, Wu Y. The regulatory effect of specialized pro-resolving mediators on immune cells. Biomed Pharmacother 2022; 156:113980. [DOI: 10.1016/j.biopha.2022.113980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/22/2022] [Accepted: 11/04/2022] [Indexed: 11/08/2022] Open
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41
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Chitin Derived Small Molecule AVR-48 Reprograms the Resting Macrophages to an Intermediate Phenotype and Decrease Pseudomonas aeruginosa Mouse Lung Infection. IMMUNO 2022. [DOI: 10.3390/immuno2040040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
AVR-48 is a structural derivative of chitin previously shown by our laboratory to significantly decrease lung injury parameters in LPS, hyperoxia and sepsis-induced rodent models. The current study objectives are to determine the cellular mechanism of action and demonstrate efficacy in a mouse bacterial lung infection model. For in vitro receptor binding and macrophage polarization studies, C57Bl/6J mouse derived spleens and human peripheral blood mononuclear cells (hPBMCs) were treated with AVR-48 ± LPS or biotin conjugated AVR-48. Different macrophage types were determined using flow cytometry and secreted cytokines were measured using ELISA. In vivo, a CD-1 mouse Pseudomonas aeruginosa lung infection was treated with AVR-48, assessing bacterial colony forming unit (CFU), IL-10 and IL-17A levels in lung and blood samples. AVR-48 binds to both the toll-like receptor 4 (TLR4) and the CD163 receptor on mouse monocytes. In hPBMCs, frequency of intermediate macrophages increased upon AVR-48 treatment for 72 h. Increased bacterial phagocytosis/intracellular killing were observed in THP-1 cells and reduction in CFU in CD-1 mouse lungs. Binding of AVR-48 to both TLR4 and CD163 receptors bring the macrophages to an intermediary stage, resulting in increased phagocytosis and decreased inflammation, altogether providing an optimal immune balance for treating lung injury and infection.
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Silver A, Feier D, Ghosh T, Rahman M, Huang J, Sarkisian MR, Deleyrolle LP. Heterogeneity of glioblastoma stem cells in the context of the immune microenvironment and geospatial organization. Front Oncol 2022; 12:1022716. [PMID: 36338705 PMCID: PMC9628999 DOI: 10.3389/fonc.2022.1022716] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/03/2022] [Indexed: 01/16/2023] Open
Abstract
Glioblastoma (GBM) is an extremely aggressive and incurable primary brain tumor with a 10-year survival of just 0.71%. Cancer stem cells (CSCs) are thought to seed GBM's inevitable recurrence by evading standard of care treatment, which combines surgical resection, radiotherapy, and chemotherapy, contributing to this grim prognosis. Effective targeting of CSCs could result in insights into GBM treatment resistance and development of novel treatment paradigms. There is a major ongoing effort to characterize CSCs, understand their interactions with the tumor microenvironment, and identify ways to eliminate them. This review discusses the diversity of CSC lineages present in GBM and how this glioma stem cell (GSC) mosaicism drives global intratumoral heterogeneity constituted by complex and spatially distinct local microenvironments. We review how a tumor's diverse CSC populations orchestrate and interact with the environment, especially the immune landscape. We also discuss how to map this intricate GBM ecosystem through the lens of metabolism and immunology to find vulnerabilities and new ways to disrupt the equilibrium of the system to achieve improved disease outcome.
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Affiliation(s)
- Aryeh Silver
- Department of Neurosurgery, Adam Michael Rosen Neuro-Oncology Laboratories, University of Florida, Gainesville, FL, United States
| | - Diana Feier
- Department of Neurosurgery, Adam Michael Rosen Neuro-Oncology Laboratories, University of Florida, Gainesville, FL, United States
| | - Tanya Ghosh
- Department of Neurosurgery, Adam Michael Rosen Neuro-Oncology Laboratories, University of Florida, Gainesville, FL, United States
| | - Maryam Rahman
- Department of Neurosurgery, Adam Michael Rosen Neuro-Oncology Laboratories, University of Florida, Gainesville, FL, United States,Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, FL, United States
| | - Jianping Huang
- Department of Neurosurgery, Adam Michael Rosen Neuro-Oncology Laboratories, University of Florida, Gainesville, FL, United States,Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, FL, United States
| | - Matthew R. Sarkisian
- Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, FL, United States,Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, United States
| | - Loic P. Deleyrolle
- Department of Neurosurgery, Adam Michael Rosen Neuro-Oncology Laboratories, University of Florida, Gainesville, FL, United States,Preston A. Wells, Jr. Center for Brain Tumor Therapy, University of Florida, Gainesville, FL, United States,*Correspondence: Loic P. Deleyrolle,
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Guimarães Gois PS, Franco PS, Cota Teixeira S, Guirelli PM, de Araújo TE, da Fonseca Batistão DW, de Oliveira FC, Lícia Santos Ferreira G, de Oliveira Gomes A, Favoreto S, Mineo JR, de Freitas Barbosa B, Ferro EAV. Polarisation of human macrophages towards an M1 subtype triggered by an atypical Brazilian strain of Toxoplasma gondii results in a reduction in parasite burden. Folia Parasitol (Praha) 2022; 69. [DOI: 10.14411/fp.2022.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 06/16/2022] [Indexed: 11/19/2022]
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Li B, Qi X, Liu Y, Yan Y, Shan J, Cai X, Lv J, Zhou X, Yu T, Ma X. Monocyte‐derived macrophages: The supplements of hepatic macrophage in
Echinococcus multilocularis
infected mice. Immun Inflamm Dis 2022; 10:e699. [PMID: 36169259 PMCID: PMC9511960 DOI: 10.1002/iid3.699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 08/20/2022] [Accepted: 08/26/2022] [Indexed: 12/03/2022] Open
Abstract
Background Alveolar echinococcosis is a potentially lethal zoonosis caused by the cestode Echinococcus multilocularis. This study is to investigate the dynamic changes of monocytes, macrophages, and related cytokines in animal models of persistent infection of E. multilocularis. Methods An infection model was established by intraperitoneal injection of a protoscolex suspension. The pathological changes of liver were observed by HE staining. The percentage of Ly6Chi and Ly6Clo Monocytes in peripheral blood was detected by flow cytometry. The distribution and expression of CX3CL1, CX3CR1, iNOS, CD163, and CD11b in the liver were detected by immunohistochemistry. The mRNA expression of tumor necrosis factor‐α (TNF‐α) and Arg1 in the liver was detected by quantitative reverse transcription polymerase chain reaction. The expression of INF‐γ, interleukin‐17 (IL‐17), IL‐4, and IL‐10 in peripheral blood was detected by enzyme‐linked immunosorbent assay. Results Hematoxylin‐eosin(HE) staining showed that significant lesions appeared in the later stages of infection in the liver. The proportion of Ly6Chi monocytes in the peripheral blood of the experimental group mice decreased after a brief rise, Ly6Clo monocytes decreased first and then increased. The expression of CX3CL1, CX3CR1, CD11b, CD163, and iNOS in the mice liver of the experimental group was increased. The expression level of TNF‐α and Arg1 mRNA in the liver of the experimental group mice increased. The expression level of IFN‐γ, IL‐17, IL‐4, and IL‐10 increased with the duration of infection. Conclusions Monocytes as a supplement to hepatic macrophage, monocytes and kupffer cells may both participate in Th1 and Th2 immune responses by differentiating into M1 or M2 at different stages of E. multilocularis infection.
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Affiliation(s)
- Bin Li
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Clinical Laboratory Center Tumor Hospital Affiliated to Xinjiang Medical University Urumqi China
- Department of Hepatic Hydatid First Affiliated Hospital of Xinjiang Medical University Urumqi Xinjiang China
| | - Xinwei Qi
- Department of Hepatic Hydatid First Affiliated Hospital of Xinjiang Medical University Urumqi Xinjiang China
| | - Yumei Liu
- Department of Hepatic Hydatid First Affiliated Hospital of Xinjiang Medical University Urumqi Xinjiang China
- Clinical Laboratory Center Children's Hospital of Xinjiang Uygur Autonomous Region Urumqi Xinjiang China
| | - Yi Yan
- Department of Hepatic Hydatid First Affiliated Hospital of Xinjiang Medical University Urumqi Xinjiang China
| | - Jiaoyu Shan
- Basic Medical College Xinjiang Medical University Urumqi Xinjiang China
| | - Xuanlin Cai
- Department of Hepatic Hydatid First Affiliated Hospital of Xinjiang Medical University Urumqi Xinjiang China
| | - Jie Lv
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Clinical Laboratory Center Tumor Hospital Affiliated to Xinjiang Medical University Urumqi China
| | - Xuan Zhou
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Clinical Laboratory Center Tumor Hospital Affiliated to Xinjiang Medical University Urumqi China
| | - Tao Yu
- Shandong Institute of Parasitic Diseases Shandong First Medical University & Shandong Academy of Medical Sciences Jining China
| | - Xiumin Ma
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Clinical Laboratory Center Tumor Hospital Affiliated to Xinjiang Medical University Urumqi China
- Department of Hepatic Hydatid First Affiliated Hospital of Xinjiang Medical University Urumqi Xinjiang China
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Mamun AA, Uddin MS, Perveen A, Jha NK, Alghamdi BS, Jeandet P, Zhang HJ, Ashraf GM. Inflammation-targeted nanomedicine against brain cancer: From design strategies to future developments. Semin Cancer Biol 2022; 86:101-116. [PMID: 36084815 DOI: 10.1016/j.semcancer.2022.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 08/08/2022] [Accepted: 08/21/2022] [Indexed: 02/07/2023]
Abstract
Brain cancer is an aggressive type of cancer with poor prognosis. While the immune system protects against cancer in the early stages, the tumor exploits the healing arm of inflammatory reactions to accelerate its growth and spread. Various immune cells penetrate the developing tumor region, establishing a pro-inflammatory tumor milieu. Additionally, tumor cells may release chemokines and cytokines to attract immune cells and promote cancer growth. Inflammation and its associated mechanisms in the progression of cancer have been extensively studied in the majority of solid tumors, especially brain tumors. However, treatment of the malignant brain cancer is hindered by several obstacles, such as the blood-brain barrier, transportation inside the brain interstitium, inflammatory mediators that promote tumor growth and invasiveness, complications in administering therapies to tumor cells specifically, the highly invasive nature of gliomas, and the resistance to drugs. To resolve these obstacles, nanomedicine could be a potential strategy that has facilitated advancements in diagnosing and treating brain cancer. Due to the numerous benefits provided by their small size and other features, nanoparticles have been a prominent focus of research in the drug-delivery field. The purpose of this article is to discuss the role of inflammatory mediators and signaling pathways in brain cancer as well as the recent advances in understanding the nano-carrier approaches for enhancing drug delivery to the brain in the treatment of brain cancer.
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Affiliation(s)
- Abdullah Al Mamun
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Kowloon, Hong Kong Special Administrative Region of China
| | - Md Sahab Uddin
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh; Pharmakon Neuroscience Research Network, Dhaka, Bangladesh
| | - Asma Perveen
- Glocal School of Life Sciences, Glocal University, Mirzapur Pole, Saharanpur, Uttar Pradesh, India
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, Uttar Pradesh 201310, India; Department of Biotechnology, School of Applied & Life Sciences, Uttaranchal University, Dehradun 248007, India
| | - Badrah S Alghamdi
- Department of Physiology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia; Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia; The Neuroscience Research Unit, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Philippe Jeandet
- University of Reims Champagne-Ardenne, Research Unit, Induced Resistance and Plant Bioprotection, EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences, PO Box 1039, 51687 Reims Cedex 2, France
| | - Hong-Jie Zhang
- Teaching and Research Division, School of Chinese Medicine, Hong Kong Baptist University, 7 Baptist University Road, Kowloon Tong, Kowloon, Hong Kong Special Administrative Region of China
| | - Ghulam Md Ashraf
- Department of Medical Laboratory Sciences, College of Health Sciences, University of Sharjah, University City, Sharjah 27272, United Arab Emirates.
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Rasaei R, Tyagi A, Rasaei S, Lee SJ, Yang SR, Kim KS, Ramakrishna S, Hong SH. Human pluripotent stem cell-derived macrophages and macrophage-derived exosomes: therapeutic potential in pulmonary fibrosis. Stem Cell Res Ther 2022; 13:433. [PMID: 36056418 PMCID: PMC9438152 DOI: 10.1186/s13287-022-03136-z] [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: 07/16/2022] [Accepted: 08/14/2022] [Indexed: 11/10/2022] Open
Abstract
Pulmonary fibrosis (PF) is a fatal chronic disease characterized by accumulation of extracellular matrix and thickening of the alveolar wall, ultimately leading to respiratory failure. PF is thought to be initiated by the dysfunction and aberrant activation of a variety of cell types in the lung. In particular, several studies have demonstrated that macrophages play a pivotal role in the development and progression of PF through secretion of inflammatory cytokines, growth factors, and chemokines, suggesting that they could be an alternative therapeutic source as well as therapeutic target for PF. In this review, we describe the characteristics, functions, and origins of subsets of macrophages involved in PF and summarize current data on the generation and therapeutic application of macrophages derived from pluripotent stem cells for the treatment of fibrotic diseases. Additionally, we discuss the use of macrophage-derived exosomes to repair fibrotic lung tissue.
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Affiliation(s)
- Roya Rasaei
- Department of Internal Medicine, School of Medicine, Kangwon National University, 1 Kangwondaehakgil, Chuncheon, Gangwon-do, 24431, South Korea
| | - Apoorvi Tyagi
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Shima Rasaei
- Department of Cellular and Molecular Science, Falavarjan Branch, Islamic Azad University, Falavarjan, Iran
| | - Seung-Joon Lee
- Department of Internal Medicine, School of Medicine, Kangwon National University, 1 Kangwondaehakgil, Chuncheon, Gangwon-do, 24431, South Korea
| | - Se-Ran Yang
- Department of Thoracic and Cardiology, School of Medicine, Kangwon National University, Chuncheon, 24341, South Korea
| | - Kye-Seong Kim
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Suresh Ramakrishna
- Graduate School of Biomedical Science and Engineering, Hanyang University, Seoul, 04763, South Korea.
| | - Seok-Ho Hong
- Department of Internal Medicine, School of Medicine, Kangwon National University, 1 Kangwondaehakgil, Chuncheon, Gangwon-do, 24431, South Korea. .,Institute of Medical Science, Kangwon National University, Chuncheon, 24341, South Korea. .,KW-Bio Co., Ltd, Wonju, South Korea.
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Xie Y, Zhou X, Zhang J, Yu H, Song Z. Immunomodulatory responses of differentially polarized macrophages to fungal infections. Int Immunopharmacol 2022; 111:109089. [PMID: 35964406 DOI: 10.1016/j.intimp.2022.109089] [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: 04/18/2022] [Revised: 07/16/2022] [Accepted: 07/22/2022] [Indexed: 11/05/2022]
Abstract
Macrophages, the first line of defense against invasive fungi in the innate immune system, are widely distributed in the blood and tissues of the body. In response to various internal and external stimulators, macrophages can polarize into classically activated macrophages (M1) and alternatively activated macrophages (M2). These two types of polarized macrophages play different roles in antifungal activity and in maintaining the steady-state balance between inflammation and tissue repair. However, the antifungal mechanisms of M1- and M2-type macrophages have not been fully described. In this review, the immune regulatory mechanisms against pathogenic fungi of these two classical types of macrophages in various tissues are summarized. The effects of antifungal factors on macrophage differentiation are also highlighted. The description of these data, on the one hand provides valuable insight for future investigations and also highlights new strategies for the treatment of pathogenic fungal infections.
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Affiliation(s)
- Yuxin Xie
- School of Basic Medical Sciences, Southwest Medical University, Luzhou 646000, PR China.
| | - Xue Zhou
- School of Basic Medical Sciences, Southwest Medical University, Luzhou 646000, PR China.
| | - Jinping Zhang
- School of Basic Medical Sciences, Southwest Medical University, Luzhou 646000, PR China; The Public Platform of Molecular Biotechnology, Public Center of Experimental Technology, Southwest Medical University, Luzhou 646000, People's Republic of China.
| | - Hong Yu
- School of Basic Medical Sciences, Southwest Medical University, Luzhou 646000, PR China; The Public Platform of Cell Biotechnology, Public Center of Experimental Technology, Southwest Medical University, Luzhou 646000, PR China.
| | - Zhangyong Song
- School of Basic Medical Sciences, Southwest Medical University, Luzhou 646000, PR China; The Public Platform of Molecular Biotechnology, Public Center of Experimental Technology, Southwest Medical University, Luzhou 646000, People's Republic of China.
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Liu Z, Xu W. Neutrophil and Macrophage Response in Acinetobacter Baumannii Infection and Their Relationship to Lung Injury. Front Cell Infect Microbiol 2022; 12:890511. [PMID: 35873147 PMCID: PMC9298752 DOI: 10.3389/fcimb.2022.890511] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/08/2022] [Indexed: 11/25/2022] Open
Abstract
Acinetobacter baumannii (AB) infection has become a threat to global public health. AB is one of the main pathogens causing nosocomial infections, especially ventilator-associated pneumonia. AB easily develops resistance against a variety of antibiotics, which makes the treatment of AB infections difficult. Therefore, it is necessary to study new treatment plans like anti-infection immunity. Both animal models of AB infection and in vitro cell experiments show that macrophages are activated in the early stage of the immune response and regulate the recruitment of neutrophils, thus playing a role in clearing AB. AB components and the immune responses they induce can lead to injury of the infected organ, mostly in the lungs. Understanding the response of innate immunity to ABs at different stages after infection and the relationship between the response and lung injury can help to develop new immunotherapy methods and prevent lung injury. This article provides a comprehensive review of the response of neutrophils and macrophages to AB infection and their association with lung injury to develop effective therapies for AB infection and prevent lung injury.
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Affiliation(s)
- Zhaojun Liu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wei Xu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, China
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Surtaieva YV, Mazurkevich AY, Bokotko RR. Effects of transplanted mesenchymal stem cells on repair of the lung tissue of rats with experimental pulmonary fibrosis. REGULATORY MECHANISMS IN BIOSYSTEMS 2022. [DOI: 10.15421/022240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Pulmonary fibrosis is one of the commonest forms of interstitial lung diseases with poorly studied methods of its treatment in both human and veterinary medicines. Therefore, this paper focused on seeking alternative methods of its diagnostics and treatment. The article provides the results of the study of bronchoalveolar lavage fluid of rats with experimental lung fibrosis and influence of transplanted allogeneic mesenchymal stem cells of the bone marrow on stimulation of regenerative processes in damaged lung tissues. The studies were conducted on female Wistar rats with pulmonary fibrosis modeled using single transthoracic injection of solution of bleomycin hydrochloride. For the purpose of treatment, we used allogeneic mesenchymal stem cells introduced by various methods and the traditional treatment. We determined that best normalization of the parameters of the studied brochoalveolar lavage occurred in animals that received mesenchymal stem cells. The most active repair processes were in the experimental group that received the mesenchymal stem cells directly to the lung tissue. The animals that received intravenous injection of mesenchymal stemm cells were observed to have lower clinical parameters of the brochoalveolar lavage, but still better than such in the group treated traditionally. The lowest parameters were in animals that received the traditional treatment; they were greater than the phisological parameters, but significantly exceeded them in animals of the control group, indicating presence of inflammatory process in the lung tissue. The conducted cytological assays of the samples of the brochoalveolar lavage revealed that experimental animals with experimental pulmonary fibrosis had development of macrophage and lymphocytic reactions under the influence of transplanted mesenchymal stemm cells. We observed no atypical cells in all the experimental groups. This allows us to draw a conclusion that using stem cells by various methods of transplantation does not stimulate the onset of negative reactons (formation of atypical cells, metastatic processes, etc). Thus, the results of the study of the influence of transplanted mesenchymal stem cells demonstrate that in the conditions of experimental pulmonary fibrosis, the activity of regenerative processes in pathologically altered lung tissue may be an effective method of treatment of animals with this kind of pathology.
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Analysis of the Biological Properties of Blood Plasma Protein with GcMAF Functional Activity. Int J Mol Sci 2022; 23:ijms23158075. [PMID: 35897653 PMCID: PMC9330714 DOI: 10.3390/ijms23158075] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/11/2022] [Accepted: 07/20/2022] [Indexed: 02/04/2023] Open
Abstract
The main problem related to the studies focusing on group-specific component protein-derived macrophage-activating factor (GcMAF) is the lack of clarity about changes occurring in different types of macrophages and related changes in their properties under the effect of GcMAF in various clinical conditions. We analyzed the antitumor therapeutic properties of GcMAF in a Lewis carcinoma model in two clinical conditions: untreated tumor lesion and tumor resorption after exposure to Karanahan therapy. GcMAF is formed during site-specific deglycosylation of vitamin D3 binding protein (DBP). DBP was obtained from the blood of healthy donors using affinity chromatography on a column with covalently bound actin. GcMAF-related factor (GcMAF-RF) was converted in a mixture with induced lymphocytes through the cellular enzymatic pathway. The obtained GcMAF-RF activates murine peritoneal macrophages (p < 0.05), induces functional properties of dendritic cells (p < 0.05) and promotes in vitro polarization of human M0 macrophages to M1 macrophages (p < 0.01). Treatment of whole blood cells with GcMAF-RF results in active production of both pro- and anti-inflammatory cytokines. It is shown that macrophage activation by GcMAF-RF is inhibited by tumor-secreted factors. In order to identify the specific antitumor effect of GcMAF-RF-activated macrophages, an approach to primary reduction of humoral suppressor activity of the tumor using the Karanahan therapy followed by macrophage activation in the tumor-associated stroma (TAS) was proposed. A prominent additive effect of GcMAF-RF, which enhances the primary immune response activation by the Karanahan therapy, was shown in the model of murine Lewis carcinoma. Inhibition of the suppressive effect of TAS is the main condition required for the manifestation of the antitumor effect of GcMAF-RF. When properly applied in combination with any chemotherapy, significantly reducing the humoral immune response at the advanced tumor site, GcMAF-RF is a promising antitumor therapeutic agent that additively destroys the pro-tumor properties of macrophages of the tumor stroma.
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