1
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Pedersen K, Laursen NS, Hansen AG, Palarasah Y, Thiel S. Development of an immunoassay for quantification of soluble human CD40L (CD154) in plasma and serum samples. J Immunol Methods 2024:113710. [PMID: 38871279 DOI: 10.1016/j.jim.2024.113710] [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: 02/01/2024] [Revised: 06/04/2024] [Accepted: 06/10/2024] [Indexed: 06/15/2024]
Abstract
When the membrane protein CD40 ligand (CD40L) on activated T cells binds the receptor CD40 on B-cells, it provides a co-stimulatory signal for B cell activation. Dysregulation of the CD40L:CD40 axis is associated with inflammatory and autoimmune diseases. The presence of soluble CD40L (sCD40L) in plasma is implicated in several diseases, from cardiovascular and autoimmune diseases to different types of cancer, and sCD40L has been suggested as a valuable marker of disease. If sCD40L is to be used as a biomarker, being able to precisely measure and quantify the levels of sCD40L in human blood samples is of utmost importance. We demonstrate the development of a sandwich-type time-resolved immunofluorometric assay for quantification of sCD40L in plasma or serum samples. For this, we generate 29 monoclonal anti-CD40L antibodies, and from these, we select the optimal combination of capture antibody and detection antibody. A number of variables were tested: the influence of the type of sample (comparing 3 different blood collection tubes for serum sampling and 4 different types of tubes for plasma sampling), the influence of freeze-thaw cycles, the influence of sampling time during night and day, and the influence of centrifugation of the samples. We found a very similar level of sCD40L in paired EDTA plasma and serum samples. Out of 100 healthy blood donor samples 61 had a level of sCD40L below the detection level of the assay, whereas the remaining 39 samples had ranging levels of sCD40L from 1.14 to 33.14 ng/mL. In summary, we present a time-resolved immunofluorometric assay based on paired monoclonal antibodies, ensuring high specificity, sensitivity, and homogeneity. The Eu3+-based assay additionally provides consistent assay readouts due to the extended decay time not seen in standard enzyme-linked immunosorbent assays. The assay paves the way for specific and consistent quantification of sCD40L in human plasma and serum samples.
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Affiliation(s)
| | - Nick Stub Laursen
- Department of Biomedicine, Aarhus University, Denmark; Commit Biologics, Denmark
| | | | - Yaseelan Palarasah
- Department of Molecular Medicine, University of Southern Denmark, Denmark
| | - Steffen Thiel
- Department of Biomedicine, Aarhus University, Denmark.
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2
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Yang J, Xiao L, Zhang L, Luo G, Ma Y, Wang X, Zhang Y. Platelets: A Potential Factor that Offers Strategies for Promoting Bone Regeneration. TISSUE ENGINEERING. PART B, REVIEWS 2024. [PMID: 38482796 DOI: 10.1089/ten.teb.2024.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/13/2024]
Abstract
Bone defects represent a prevalent category of clinical injuries, causing significant pain and escalating health care burdens. Effectively addressing bone defects is thus of paramount importance. Platelets, formed from megakaryocyte lysis, have emerged as pivotal players in bone tissue repair, inflammatory responses, and angiogenesis. Their intracellular storage of various growth factors, cytokines, and membrane protein receptors contributes to these crucial functions. This article provides a comprehensive overview of platelets' roles in hematoma structure, inflammatory responses, and angiogenesis throughout the process of fracture healing. Beyond their application in conjunction with artificial bone substitute materials for treating bone defects, we propose the potential future use of anticoagulants such as heparin in combination with these materials to regulate platelet number and function, thereby promoting bone healing. Ultimately, we contemplate whether manipulating platelet function to modulate bone healing could offer innovative ideas and directions for the clinical treatment of bone defects.
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Affiliation(s)
- Jingjing Yang
- Department of Hygiene Toxicology, School of Public Health, Zunyi Medical University, Zunyi, China
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Key Laboratory of Maternal and Child Health and Exposure Science of Guizhou Higher Education Institutes, Zunyi Medical University, Zunyi, China
- Guizhou Provincial Key Laboratory of Medicinal Biotechnology in Colleges and Universities, Zunyi Medical University, Zunyi, China
| | - Lan Xiao
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- School of Medicine and Dentistry, Griffith University, Queensland, Australia
| | - Lijia Zhang
- Department of Hygiene Toxicology, School of Public Health, Zunyi Medical University, Zunyi, China
- Key Laboratory of Maternal and Child Health and Exposure Science of Guizhou Higher Education Institutes, Zunyi Medical University, Zunyi, China
| | - Guochen Luo
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Yaping Ma
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Xin Wang
- Department of Orthopaedic Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Guizhou Provincial Key Laboratory of Medicinal Biotechnology in Colleges and Universities, Zunyi Medical University, Zunyi, China
| | - Yi Zhang
- Department of Hygiene Toxicology, School of Public Health, Zunyi Medical University, Zunyi, China
- Key Laboratory of Maternal and Child Health and Exposure Science of Guizhou Higher Education Institutes, Zunyi Medical University, Zunyi, China
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3
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Chen WA, Boskovic DS. Neutrophil Extracellular DNA Traps in Response to Infection or Inflammation, and the Roles of Platelet Interactions. Int J Mol Sci 2024; 25:3025. [PMID: 38474270 DOI: 10.3390/ijms25053025] [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: 11/30/2023] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024] Open
Abstract
Neutrophils present the host's first line of defense against bacterial infections. These immune effector cells are mobilized rapidly to destroy invading pathogens by (a) reactive oxygen species (ROS)-mediated oxidative bursts and (b) via phagocytosis. In addition, their antimicrobial service is capped via a distinct cell death mechanism, by the release of their own decondensed nuclear DNA, supplemented with a variety of embedded proteins and enzymes. The extracellular DNA meshwork ensnares the pathogenic bacteria and neutralizes them. Such neutrophil extracellular DNA traps (NETs) have the potential to trigger a hemostatic response to pathogenic infections. The web-like chromatin serves as a prothrombotic scaffold for platelet adhesion and activation. What is less obvious is that platelets can also be involved during the initial release of NETs, forming heterotypic interactions with neutrophils and facilitating their responses to pathogens. Together, the platelet and neutrophil responses can effectively localize an infection until it is cleared. However, not all microbial infections are easily cleared. Certain pathogenic organisms may trigger dysregulated platelet-neutrophil interactions, with a potential to subsequently propagate thromboinflammatory processes. These may also include the release of some NETs. Therefore, in order to make rational intervention easier, further elucidation of platelet, neutrophil, and pathogen interactions is still needed.
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Affiliation(s)
- William A Chen
- Division of Biochemistry, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA
- Department of Pharmaceutical and Administrative Sciences, School of Pharmacy, Loma Linda University, Loma Linda, CA 92350, USA
| | - Danilo S Boskovic
- Division of Biochemistry, Department of Basic Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA
- Department of Earth and Biological Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92350, USA
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4
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Xu Y, Li Q, Lin H. Bioinformatics analysis of CMTM family in pan-cancer and preliminary exploration of CMTM6 in bladder cancer. Cell Signal 2024; 115:111012. [PMID: 38113979 DOI: 10.1016/j.cellsig.2023.111012] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 12/21/2023]
Abstract
BACKGROUND The chemokine-like factor (CKLF)-like Marvel transmembrane structural domain (CMTM) family is widely expressed in the tumor and immune systems and is essential in human cancer progression. However, the multi-omic profile of CMTM family genes and their role in tumor patient prognosis and immune microenvironment have not been explored. METHODS We collected data from 33 cancers and 33 non-cancers and then comprehensively analyzed the basal expression levels of CMTM family genes in normal human tissues as well as abnormal expression in diseases, genomic alterations, diagnostic and prognostic roles, subcellular localization, pathway enrichment, the immune microenvironment, associations with immune checkpoints, and drug sensitivities as well as to predict the immunotherapeutic response of patients to ICIs and targeting of small molecule drugs, the above results were validated by immunohistochemical staining, pathology sections and experiments. We also performed protein docking of immune checkpoints binding to CMTM6 and screening of small molecule drugs targeting CMTM6 based on mass spectrometry results and molecular docking techniques. Finally, we experimentally confirmed the role of CMTM6 in bladder cancer. RESULTS We found differential expression and diagnostic biomarker value of the CMTMs family in diseases (cancer and non-cancer). CMTMs were also found to play a key role in pan-cancer with the tumor microenvironment. CMTMs were closely associated with common immune checkpoints, TMB and MSI, so we scored CMTMs based on CMTMs expression in patients undergoing ICI, and patients with lower scores had better survival and showed higher immunotherapy response after immunotherapy. Finally, molecular docking was used to identify small molecule inhibitors that could target CMTM6 and binding poses of CMTM6 to other immune checkpoint genes. Finally, it was determined experimentally that knockdown of CMTM6 gene expression inhibited the proliferation and invasion of bladder cancer cells. CONCLUSIONS Our findings provide a valuable strategy to guide the diagnostic and therapeutic direction of CMTM family genes in disease.
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Affiliation(s)
- Yan Xu
- Department of Urology, The First Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Qianlong Li
- Department of Otolaryngology, The first Hospital of China Medical University, Shenyang 110001, Liaoning Province, China
| | - Hualong Lin
- Department of Medical Oncology, Rui'an People's Hospital, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou 325200, China.
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5
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Parker WAE, Storey RF. The role of platelet P2Y 12 receptors in inflammation. Br J Pharmacol 2024; 181:515-531. [PMID: 37771103 DOI: 10.1111/bph.16256] [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: 04/02/2023] [Revised: 08/15/2023] [Accepted: 09/15/2023] [Indexed: 09/30/2023] Open
Abstract
Inflammation is a complex pathophysiological process underlying many clinical conditions. Platelets contribute to the thrombo-inflammatory response. Platelet P2Y12 receptors amplify platelet activation, potentiating platelet aggregation, degranulation and shape change. The contents of platelet alpha granules, in particular, act directly on leucocytes, including mediating platelet-leucocyte aggregation and activation via platelet P-selectin. Much evidence for the role of platelet P2Y12 receptors in inflammation comes from studies using antagonists of these receptors, such as the thienopyridines clopidogrel and prasugrel, and the cyclopentyltriazolopyrimidine ticagrelor, in animal and human experimental models. These suggest that antagonism of P2Y12 receptors decreases markers of inflammation with some evidence that this reduces incidence of adverse clinical sequelae during inflammatory conditions. Interpretation is complicated by pleiotropic effects such as those of the thienopyridines on circulating leucocyte numbers and of ticagrelor on adenosine reuptake. The available evidence suggests that P2Y12 receptors are prominent mediators of inflammation and P2Y12 receptor antagonism as a potentially powerful strategy in a broad range of inflammatory conditions. LINKED ARTICLES: This article is part of a themed issue on Platelet purinergic receptor and non-thrombotic disease. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v181.4/issuetoc.
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Affiliation(s)
- William A E Parker
- Cardiovascular Research Unit, Division of Clinical Medicine, University of Sheffield, Sheffield, UK
- NIHR Sheffield Biomedical Research Centre, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Robert F Storey
- Cardiovascular Research Unit, Division of Clinical Medicine, University of Sheffield, Sheffield, UK
- NIHR Sheffield Biomedical Research Centre, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
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Liu C, Su Y, Guo W, Ma X, Qiao R. The platelet storage lesion, what are we working for? J Clin Lab Anal 2024; 38:e24994. [PMID: 38069592 PMCID: PMC10829691 DOI: 10.1002/jcla.24994] [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: 04/25/2023] [Revised: 11/04/2023] [Accepted: 11/26/2023] [Indexed: 02/01/2024] Open
Abstract
BACKGROUND Platelet concentrate (PC) transfusions are crucial in prevention and treatment of bleeding in infection, surgery, leukemia, and thrombocytopenia patients. Although the technology for platelet preparation and storage has evolved over the decades, there are still challenges in the demand for platelets in blood banks because the platelet shelf life is limited to 5 days due to bacterial contamination and platelet storage lesions (PSLs) at 20-24°C under constant horizontal agitation. In addition, the relations between some adverse effects of platelet transfusions and PSLs have also been considered. Therefore, understanding the mechanisms of PSLs is conducive to obtaining high quality platelets and facilitating safe and effective platelet transfusions. OBJECTIVE This review summarizes developments in mechanistic research of PSLs and their relationship with clinical practice, providing insights for future research. METHODS Authors conducted a search on PubMed and Web of Science using the professional terms "PSL" and "platelet transfusion." The obtained literature was then roughly categorized based on their research content. Similar studies were grouped into the same sections, and further searches were conducted based on the keywords of each section. RESULTS Different studies have explored PSLs from various perspectives, including changes in platelet morphology, surface molecules, biological response modifiers (BMRs), metabolism, and proteins and RNA, in an attempt to monitor PSLs and identify intervention targets that could alleviate PSLs. Moreover, novel platelet storage conditions, including platelet additive solutions (PAS) and reconsidered cold storage methods, are explored. There are two approaches to obtaining high-quality platelets. One approach simulates the in vivo environment to maintain platelet activity, while the other keeps platelets at a low activity level in vitro under low temperatures. CONCLUSION Understanding PSLs helps us identify good intervention targets and assess the therapeutic effects of different PSLs stages for different patients.
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Affiliation(s)
- Cheng Liu
- Peking University Third HospitalBeijingChina
| | - Yang Su
- Peking University Third HospitalBeijingChina
| | - Wanwan Guo
- Peking University Third HospitalBeijingChina
| | - Xiaolong Ma
- Peking University Third HospitalBeijingChina
| | - Rui Qiao
- Peking University Third HospitalBeijingChina
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7
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Banday AZ, Nisar R, Patra PK, Kaur A, Sadanand R, Chaudhry C, Bukhari STA, Banday SZ, Bhattarai D, Notarangelo LD. Clinical and Immunological Features, Genetic Variants, and Outcomes of Patients with CD40 Deficiency. J Clin Immunol 2023; 44:17. [PMID: 38129705 DOI: 10.1007/s10875-023-01633-1] [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: 10/11/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
PURPOSE Inherited deficiencies of CD40 and CD40 ligand (CD40L) reflect the crucial immunological functions of CD40-CD40L interaction/signaling. Although numerous studies have provided a detailed description of CD40L deficiency, reports of CD40 deficiency are scarce. Herein, we describe the characteristics of all reported patients with CD40 deficiency. METHODS The PubMed, Embase and Web of Science databases were searched for relevant literature published till 7th August 2023. Study deduplication and identification of relevant reports was performed using the online PICO Portal. The data were extracted using a pre-designed data extraction form and the SPSS software was used for analysis. RESULTS Systematic literature review revealed 40 unique patients with CD40 deficiency. Respiratory tract and gastrointestinal infections were the predominant clinical manifestations (observed in 93% and 57% patients, respectively). Sclerosing cholangitis has been reported in nearly one-third of patients. Cryptosporidium sp. (29%) and Pneumocystis jirovecii (21%) were the most common microbes identified. Very low to undetectable IgG levels and severely reduced/absent switch memory B cells were observed in all patients tested/reported. Elevated IgM levels were observed in 69% patients. Overall, splice-site and missense variants were the most common (36% and 32%, respectively) molecular defects identified. All patients were managed with immunoglobulin replacement therapy and antimicrobial prophylaxis was utilized in a subset. Hematopoietic stem cell transplantation (HSCT) has been performed in 45% patients (curative outcome observed in 73% of these patients). Overall, a fatal outcome was reported in 21% patients. CONCLUSIONS We provide a comprehensive description of all important aspects of CD40 deficiency. HSCT is a promising curative treatment option for CD40 deficiency.
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Affiliation(s)
- Aaqib Zaffar Banday
- Department of Pediatrics, Government Medical College (GMC), Srinagar, India
- Clinical Immunology & Rheumatology Division, Department of Pediatrics, Khyber Medical Institute, Srinagar, India
- Rheumatology Division, Kashmir Clinics Group, Srinagar, India
| | - Rahila Nisar
- Department of Microbiology, Government Medical College (GMC), Baramulla, India
| | - Pratap Kumar Patra
- Department of Pediatrics, All India Institute of Medical Sciences (AIIMS), Patna, 801507, India.
| | - Anit Kaur
- Department of Translational & Regenerative Medicine, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Rohit Sadanand
- Division of Genetics, Department of Pediatrics, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Chakshu Chaudhry
- Suma Genomics, Manipal, India
- Department of Pediatrics, Maharishi Markandeshwar College of Medical Sciences and Research, Ambala, India
| | | | - Saquib Zaffar Banday
- Department of Medical-Hematoncology and Stem Cell Transplant, Paras Hospital, Srinagar, India
| | | | - Luigi D Notarangelo
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
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8
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Yan X, Ols S, Arcoverde Cerveira R, Lenart K, Hellgren F, Ye K, Cagigi A, Buggert M, Nimmerjahn F, Falkesgaard Højen J, Parera D, Pessara U, Fischer S, Loré K. Cell targeting and immunostimulatory properties of a novel Fcγ-receptor-independent agonistic anti-CD40 antibody in rhesus macaques. Cell Mol Life Sci 2023; 80:189. [PMID: 37353664 PMCID: PMC10289945 DOI: 10.1007/s00018-023-04828-2] [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: 02/20/2023] [Revised: 05/11/2023] [Accepted: 06/01/2023] [Indexed: 06/25/2023]
Abstract
Targeting CD40 by agonistic antibodies used as vaccine adjuvants or for cancer immunotherapy is a strategy to stimulate immune responses. The majority of studied agonistic anti-human CD40 antibodies require crosslinking of their Fc region to inhibitory FcγRIIb to induce immune stimulation although this has been associated with toxicity in previous studies. Here we introduce an agonistic anti-human CD40 monoclonal IgG1 antibody (MAB273) unique in its specificity to the CD40L binding site of CD40 but devoid of Fcγ-receptor binding. We demonstrate rapid binding of MAB273 to B cells and dendritic cells resulting in activation in vitro on human cells and in vivo in rhesus macaques. Dissemination of fluorescently labeled MAB273 after subcutaneous administration was found predominantly at the site of injection and specific draining lymph nodes. Phenotypic cell differentiation and upregulation of genes associated with immune activation were found in the targeted tissues. Antigen-specific T cell responses were enhanced by MAB273 when given in a prime-boost regimen and for boosting low preexisting responses. MAB273 may therefore be a promising immunostimulatory adjuvant that warrants future testing for therapeutic and prophylactic vaccination strategies.
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Affiliation(s)
- Xianglei Yan
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Visionsgatan 4, BioClinicum J7:30, 171 64, Stockholm, Sweden
- Center of Molecular Medicine, Stockholm, Sweden
| | - Sebastian Ols
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Visionsgatan 4, BioClinicum J7:30, 171 64, Stockholm, Sweden
- Center of Molecular Medicine, Stockholm, Sweden
| | - Rodrigo Arcoverde Cerveira
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Visionsgatan 4, BioClinicum J7:30, 171 64, Stockholm, Sweden
- Center of Molecular Medicine, Stockholm, Sweden
| | - Klara Lenart
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Visionsgatan 4, BioClinicum J7:30, 171 64, Stockholm, Sweden
- Center of Molecular Medicine, Stockholm, Sweden
| | - Fredrika Hellgren
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Visionsgatan 4, BioClinicum J7:30, 171 64, Stockholm, Sweden
- Center of Molecular Medicine, Stockholm, Sweden
| | - Kewei Ye
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Visionsgatan 4, BioClinicum J7:30, 171 64, Stockholm, Sweden
- Center of Molecular Medicine, Stockholm, Sweden
| | - Alberto Cagigi
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Visionsgatan 4, BioClinicum J7:30, 171 64, Stockholm, Sweden
- Center of Molecular Medicine, Stockholm, Sweden
| | - Marcus Buggert
- Department of Medicine Huddinge, Center for Infectious Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Falk Nimmerjahn
- Division of Genetics, Department of Biology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Jesper Falkesgaard Højen
- Department of Infectious Diseases, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Medicine, University of Colorado Denver, Aurora, CO, USA
| | | | | | | | - Karin Loré
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Visionsgatan 4, BioClinicum J7:30, 171 64, Stockholm, Sweden.
- Center of Molecular Medicine, Stockholm, Sweden.
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9
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Zhang X, Yu S, Li X, Wen X, Liu S, Zu R, Ren H, Li T, Yang C, Luo H. Research progress on the interaction between oxidative stress and platelets: Another avenue for cancer? Pharmacol Res 2023; 191:106777. [PMID: 37080257 DOI: 10.1016/j.phrs.2023.106777] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 04/06/2023] [Accepted: 04/18/2023] [Indexed: 04/22/2023]
Abstract
Oxidative stress (OS) is a chemical imbalance between an oxidant and an antioxidant, causing damage to redox signaling and control or causing molecular damage. Unbalanced oxidative metabolism can produce excessive reactive oxygen species (ROS). These excess ROS can cause drastic changes in platelet metabolism and further affect platelet function. It will also lead to an increase in platelet procoagulant phenotype and cell apoptosis, which will increase the risk of thrombosis. The creation of ROS and subsequent platelet activation, adhesion, and recruitment are then further encouraged in an auto-amplifying loop by ROS produced from platelets. Meanwhile, cancer cells produce a higher concentration of ROS due to their fast metabolism and high proliferation rate. However, excessive ROS can result in damage to and modification of cellular macromolecules. The formation of cancer and its progression is strongly associated with oxidative stress and the resulting oxidative damage. In addition, platelets are an important part of the tumor microenvironment, and there is a significant cross-communication between platelets and cancer cells. Cancer cells alter the activation status of platelets, their RNA spectrum, proteome, and other properties. The "cloaking" of cancer cells by platelets providing physical protection,avoiding destruction from shear stress and the attack of immune cells, promoting tumor cell invasion.We explored the vicious circle interaction between ROS, platelets, and cancer in this review, and we believe that ROS can play a stimulative role in tumor growth and metastasis through platelets.
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Affiliation(s)
- Xingmei Zhang
- Department of Clinical Laboratory, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, 610041 China; College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 610042, China
| | - Sisi Yu
- Department of Clinical Laboratory, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, 610041 China
| | - Xiaobo Li
- Molecular Diagnostic Laboratory of Department of Microbiology and Immunology, 3201 Hospital Affiliated to Medical College of Xi'an Jiaotong University, Hanzhong 723099, China
| | - Xiaoxia Wen
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 610042, China
| | - Shan Liu
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 610042, China
| | - Ruiling Zu
- Department of Clinical Laboratory, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, 610041 China
| | - Hanxiao Ren
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 610042, China
| | - Tian Li
- School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China.
| | - Chaoguo Yang
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 610042, China.
| | - Huaichao Luo
- Department of Clinical Laboratory, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, 610041 China.
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10
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Trivigno SMG, Guidetti GF, Barbieri SS, Zarà M. Blood Platelets in Infection: The Multiple Roles of the Platelet Signalling Machinery. Int J Mol Sci 2023; 24:ijms24087462. [PMID: 37108623 PMCID: PMC10138547 DOI: 10.3390/ijms24087462] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Platelets are classically recognized for their important role in hemostasis and thrombosis but they are also involved in many other physiological and pathophysiological processes, including infection. Platelets are among the first cells recruited to sites of inflammation and infection and they exert their antimicrobial response actively cooperating with the immune system. This review aims to summarize the current knowledge on platelet receptor interaction with different types of pathogens and the consequent modulations of innate and adaptive immune responses.
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Affiliation(s)
- Silvia M G Trivigno
- Department of Biology and Biotechnology, University of Pavia, 27100 Pavia, Italy
- University School for Advanced Studies, IUSS, 27100 Pavia, Italy
| | | | - Silvia Stella Barbieri
- Unit of Heart-Brain Axis: Cellular and Molecular Mechanisms, Centro Cardiologico Monzino IRCCS, 20138 Milano, Italy
| | - Marta Zarà
- Unit of Heart-Brain Axis: Cellular and Molecular Mechanisms, Centro Cardiologico Monzino IRCCS, 20138 Milano, Italy
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11
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Niculae CM, Hristea A, Moroti R. Mechanisms of COVID-19 Associated Pulmonary Thrombosis: A Narrative Review. Biomedicines 2023; 11:biomedicines11030929. [PMID: 36979908 PMCID: PMC10045826 DOI: 10.3390/biomedicines11030929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/13/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023] Open
Abstract
COVID-19, the infectious disease caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), is frequently associated with pulmonary thrombotic events, especially in hospitalized patients. Severe SARS-CoV-2 infection is characterized by a proinflammatory state and an associated disbalance in hemostasis. Immune pathology analysis supports the inflammatory nature of pulmonary arterial thrombi composed of white blood cells, especially neutrophils, CD3+ and CD20+ lymphocytes, fibrin, red blood cells, and platelets. Immune cells, cytokines, chemokines, and the complement system are key drivers of immunothrombosis, as they induce the damage of endothelial cells and initiate proinflammatory and procoagulant positive feedback loops. Neutrophil extracellular traps induced by COVID-19-associated “cytokine storm”, platelets, red blood cells, and coagulation pathways close the inflammation–endotheliopathy–thrombosis axis, contributing to SARS-CoV-2-associated pulmonary thrombotic events. The hypothesis of immunothrombosis is also supported by the minor role of venous thromboembolism with chest CT imaging data showing peripheral blood clots associated with inflammatory lesions and the high incidence of thrombotic events despite routine thromboprophylaxis. Understanding the complex mechanisms behind COVID-19-induced pulmonary thrombosis will lead to future combination therapies for hospitalized patients with severe disease that would target the crossroads of inflammatory and coagulation pathways.
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Affiliation(s)
- Cristian-Mihail Niculae
- Infectious Diseases Department, Faculty of Medicine, University of Medicine and Pharmacy “Carol Davila”, 37 Dionisie Lupu Street, 020021 Bucharest, Romania; (A.H.); (R.M.)
- National Institute for Infectious Diseases “Prof. Dr. Matei Bals”, 1 Calistrat Grozovici Street, 021105 Bucharest, Romania
- Correspondence:
| | - Adriana Hristea
- Infectious Diseases Department, Faculty of Medicine, University of Medicine and Pharmacy “Carol Davila”, 37 Dionisie Lupu Street, 020021 Bucharest, Romania; (A.H.); (R.M.)
- National Institute for Infectious Diseases “Prof. Dr. Matei Bals”, 1 Calistrat Grozovici Street, 021105 Bucharest, Romania
| | - Ruxandra Moroti
- Infectious Diseases Department, Faculty of Medicine, University of Medicine and Pharmacy “Carol Davila”, 37 Dionisie Lupu Street, 020021 Bucharest, Romania; (A.H.); (R.M.)
- National Institute for Infectious Diseases “Prof. Dr. Matei Bals”, 1 Calistrat Grozovici Street, 021105 Bucharest, Romania
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12
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Serum sCD40L and IL-31 in Association with Early Phase of IgA Nephropathy. J Clin Med 2023; 12:jcm12052023. [PMID: 36902810 PMCID: PMC10004527 DOI: 10.3390/jcm12052023] [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: 01/13/2023] [Revised: 02/25/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
BACKGROUND IgA nephropathy (IgAN) is a major cause of chronic glomerulonephritis worldwide. T cell dysregulation has been reported to contribute to the pathogenesis of IgAN. Methods We measured a broad range of Th1, Th2 and Th17 cytokines in the serum of IgAN patients. We searched for significant cytokines, which were associated with clinical parameters and histological scores in IgAN patients. RESULTS Among 15 cytokines, the levels of soluble CD40L (sCD40L) and IL-31 were higher in IgAN patients and were significantly associated with a higher estimated glomerular filtration rate (eGFR), a lower urinary protein to creatinine ratio (UPCR), and milder tubulointerstitial lesions (i.e., the early phase of IgAN). Multivariate analysis revealed that serum sCD40L was an independent determinant of a lower UPCR after adjustment for age, eGFR, and mean blood pressure (MBP). CD40, a receptor of sCD40L, has been reported to be upregulated on mesangial cells in IgAN. The sCD40L/CD40 interaction may directly induce inflammation in mesangial areas and may therefore be involved in the development of IgAN. CONCLUSIONS The present study demonstrated the significance of serum sCD40L and IL-31 in the early phase of IgAN. Serum sCD40L may be a marker of the beginning of inflammation in IgAN.
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Quah Y, Lee YY, Lee SJ, Kim SD, Rhee MH, Park SC. In silico investigation of Panax ginseng lead compounds against COVID-19 associated platelet activation and thromboembolism. J Ginseng Res 2023; 47:283-290. [PMID: 36160270 PMCID: PMC9482091 DOI: 10.1016/j.jgr.2022.09.001] [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: 05/19/2022] [Revised: 08/02/2022] [Accepted: 09/05/2022] [Indexed: 11/19/2022] Open
Abstract
Hypercoagulability is frequently observed in patients with severe coronavirus disease-2019 (COVID-19). Platelets are a favorable target for effectively treating hypercoagulability in COVID-19 patients as platelet hyperactivity has also been observed. It is difficult to develop a treatment for COVID-19 that will be effective against all variants and the use of antivirals may not be fully effective against COVID-19 as activated platelets have been detected in patients with COVID-19. Therefore, patients with less severe side effects often turn toward natural remedies. Numerous phytochemicals are being investigated for their potential to treat a variety of illnesses, including cancer and bacterial and viral infections. Natural products have been used to alleviate COVID-19 symptoms. Panax ginseng has potential for managing cardiovascular diseases and could be a treatment for COVID-19 by targeting the coagulation cascade and platelet activation. Using molecular docking, we analyzed the interactions of bioactive chemicals in P. ginseng with important proteins and receptors involved in platelet activation. Furthermore, the SwissADME online tool was used to calculate the pharmacokinetics and drug-likeness properties of the lead compounds of P. ginseng. Dianthramine, deoxyharrtingtonine, and suchilactone were determined to have favorable pharmacokinetic profiles.
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Affiliation(s)
- Yixian Quah
- Developmental and Reproductive Toxicology Research Group, Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Yuan Yee Lee
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Seung-Jin Lee
- Developmental and Reproductive Toxicology Research Group, Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Sung Dae Kim
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Man Hee Rhee
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
- Corresponding author. Laboratory of Physiology and Cell Signaling, College of Veterinary Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea.
| | - Seung-Chun Park
- Department of Veterinary Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
- Corresponding author. College of Veterinary Medicine, Kyungpook National University, Daegu, 41566, Republic of Korea.
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14
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Grønbæk SK, Høgh J, Knudsen AD, Pham MHC, Sigvardsen PE, Fuchs A, Kühl JT, Køber L, Gerstoft J, Benfield T, Ostrowski SR, Kofoed KF, Nielsen SD. Aortic aneurysms and markers of platelet activation, hemostasis, and endothelial disruption in people living with HIV. Front Immunol 2023; 14:1115894. [PMID: 36817421 PMCID: PMC9933775 DOI: 10.3389/fimmu.2023.1115894] [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: 12/04/2022] [Accepted: 01/23/2023] [Indexed: 02/05/2023] Open
Abstract
Introduction People living with HIV (PLWH) are at twice the risk of developing cardiovascular diseases and have more than four times higher odds of aortic aneurysm (AA) than the uninfected population. However, biomarkers of AA in PLWH are yet to be discovered. We aimed to investigate whether circulating biomarkers reflecting platelet activation, hemostasis and endothelial disruption, i.e. sCD40L, D-dimer, syndecan-1, and thrombomodulin, were associated with AA in PLWH. Methods Five hundred seventy one PLWH from the Copenhagen Comorbidity in HIV Infection (COCOMO) study ≥40 years of age with an available contrast-enhanced CT scan as well as available biomarker analyses were included. The biomarkers were analyzed on thawed plasma. For each biomarker, we defined high level as a concentration in the upper quartile and low level as a concentration below the upper quartile. For D-dimer, the cut-off was defined as the lower limit of detection. Using unadjusted and adjusted logistic and linear regression models, we analyzed associations between AA and sCD40L, D-dimer, syndecan-1, and thrombomodulin, respectively in PLWH. Results PLWH had median (IQR) age 52 years (47-60), 88% were male, median (IQR) time since HIV diagnosis was 15 years (8-23), and 565 (99%) were currently on antiretroviral treatment. High level of sCD40L was associated with lower odds of AA in both unadjusted (odds ratio, OR, 0.23 (95% CI 0.07-0.77; P=0.017)) and adjusted models (adjusted OR, aOR, 0.23 (95% CI 0.07-0.78; P=0.019)). Detectable level of D-dimer was associated with higher odds of AA in both unadjusted (OR 2.76 (95% CI 1.34-5.67; P=0.006)) and adjusted models (aOR 2.22 (95% CI 1.02-4.85; P=0.045)). Conclusions SCD40L was associated with lower odds of AA whereas D-dimer was independently associated with higher odds of AA in PLWH. This calls for further investigations into specific biomarkers to aid early diagnosis of AA in PLWH.
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Affiliation(s)
- Sylvester Klöcker Grønbæk
- Department of Infectious Diseases, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark,*Correspondence: Susanne Dam Nielsen, ; Sylvester Klöcker Grønbæk,
| | - Julie Høgh
- Department of Infectious Diseases, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Andreas Dehlbæk Knudsen
- Department of Infectious Diseases, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Michael Huy Cuong Pham
- Department of Cardiology, The Heart Center, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Per Ejlstrup Sigvardsen
- Department of Cardiology, The Heart Center, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Andreas Fuchs
- Department of Cardiology, The Heart Center, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jørgen Tobias Kühl
- Department of Cardiology, The Heart Center, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Lars Køber
- Department of Cardiology, The Heart Center, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Jan Gerstoft
- Department of Infectious Diseases, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Benfield
- Center of Research and Disruption of Infectious Diseases, Department of Infectious Diseases, Copenhagen University Hospital, Amager and Hvidovre, Hvidovre, Denmark
| | - Sisse Rye Ostrowski
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark,Department of Clinical Immunology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Klaus Fuglsang Kofoed
- Department of Cardiology, The Heart Center, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark,Department of Radiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Susanne Dam Nielsen
- Department of Infectious Diseases, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark,*Correspondence: Susanne Dam Nielsen, ; Sylvester Klöcker Grønbæk,
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15
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Garraud O, Hamzeh-Cognasse H, Chalayer E, Duchez AC, Tardy B, Oriol P, Haddad A, Guyotat D, Cognasse F. Platelet transfusion in adults: An update. Transfus Clin Biol 2023; 30:147-165. [PMID: 36031180 DOI: 10.1016/j.tracli.2022.08.147] [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] [Indexed: 02/07/2023]
Abstract
Many patients worldwide receive platelet components (PCs) through the transfusion of diverse types of blood components. PC transfusions are essential for the treatment of central thrombocytopenia of diverse causes, and such treatment is beneficial in patients at risk of severe bleeding. PC transfusions account for almost 10% of all the blood components supplied by blood services, but they are associated with about 3.25 times as many severe reactions (attributable to transfusion) than red blood cell transfusions after stringent in-process leukoreduction to less than 106 residual cells per blood component. PCs are not homogeneous, due to the considerable differences between donors. Furthermore, the modes of PC collection and preparation, the safety precautions taken to limit either the most common (allergic-type reactions and febrile non-hemolytic reactions) or the most severe (bacterial contamination, pulmonary lesions) adverse reactions, and storage and conservation methods can all result in so-called PC "storage lesions". Some storage lesions affect PC quality, with implications for patient outcome. Good transfusion practices should result in higher levels of platelet recovery and efficacy, and lower complication rates. These practices include a matching of tissue ABH antigens whenever possible, and of platelet HLA (and, to a lesser extent, HPA) antigens in immunization situations. This review provides an overview of all the available information relating to platelet transfusion, from donor and donation to bedside transfusion, and considers the impact of the measures applied to increase transfusion efficacy while improving safety and preventing transfusion inefficacy and refractoriness. It also considers alternatives to platelet component (PC) transfusion.
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Affiliation(s)
- O Garraud
- SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Étienne, France.
| | | | - E Chalayer
- SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Étienne, France; Saint-Etienne University Hospital, Department of Hematology and Cellular Therapy, Saint-Étienne, France
| | - A C Duchez
- SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Étienne, France; Établissement Français du Sang Auvergne-Rhône-Alpes, Saint-Étienne, France
| | - B Tardy
- SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Étienne, France; CHU de Saint-Etienne, INSERM and CIC EC 1408, Clinical Epidemiology, Saint-Étienne, France
| | - P Oriol
- CHU de Saint-Etienne, INSERM and CIC EC 1408, Clinical Epidemiology, Saint-Étienne, France
| | - A Haddad
- SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Étienne, France; Sacré-Cœur Hospital, Beirut, Lebanon; Lebanese American University, Beirut, Lebanon
| | - D Guyotat
- Saint-Etienne University Hospital, Department of Hematology and Cellular Therapy, Saint-Étienne, France
| | - F Cognasse
- SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Étienne, France; Établissement Français du Sang Auvergne-Rhône-Alpes, Saint-Étienne, France
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16
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Subtype-specific plasma signatures of platelet-related protein releasate in acute pulmonary embolism. Thromb Res 2022; 220:75-87. [DOI: 10.1016/j.thromres.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/21/2022] [Accepted: 10/07/2022] [Indexed: 11/17/2022]
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17
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Melamud MM, Ermakov EA, Boiko AS, Kamaeva DA, Sizikov AE, Ivanova SA, Baulina NM, Favorova OO, Nevinsky GA, Buneva VN. Multiplex Analysis of Serum Cytokine Profiles in Systemic Lupus Erythematosus and Multiple Sclerosis. Int J Mol Sci 2022; 23:ijms232213829. [PMID: 36430309 PMCID: PMC9695219 DOI: 10.3390/ijms232213829] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 10/27/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022] Open
Abstract
Changes in cytokine profiles and cytokine networks are known to be a hallmark of autoimmune diseases, including systemic lupus erythematosus (SLE) and multiple sclerosis (MS). However, cytokine profiles research studies are usually based on the analysis of a small number of cytokines and give conflicting results. In this work, we analyzed cytokine profiles of 41 analytes in patients with SLE and MS compared with healthy donors using multiplex immunoassay. The SLE group included treated patients, while the MS patients were drug-free. Levels of 11 cytokines, IL-1b, IL-1RA, IL-6, IL-9, IL-10, IL-15, MCP-1/CCL2, Fractalkine/CX3CL1, MIP-1a/CCL3, MIP-1b/CCL4, and TNFa, were increased, but sCD40L, PDGF-AA, and MDC/CCL22 levels were decreased in SLE patients. Thus, changes in the cytokine profile in SLE have been associated with the dysregulation of interleukins, TNF superfamily members, and chemokines. In the case of MS, levels of 10 cytokines, sCD40L, CCL2, CCL3, CCL22, PDGF-AA, PDGF-AB/BB, EGF, IL-8, TGF-a, and VEGF, decreased significantly compared to the control group. Therefore, cytokine network dysregulation in MS is characterized by abnormal levels of growth factors and chemokines. Cross-disorder analysis of cytokine levels in MS and SLE showed significant differences between 22 cytokines. Protein interaction network analysis showed that all significantly altered cytokines in both SLE and MS are functionally interconnected. Thus, MS and SLE may be associated with impaired functional relationships in the cytokine network. A cytokine correlation networks analysis revealed changes in correlation clusters in SLE and MS. These data expand the understanding of abnormal regulatory interactions in cytokine profiles associated with autoimmune diseases.
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Affiliation(s)
- Mark M. Melamud
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Evgeny A. Ermakov
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Anastasiia S. Boiko
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, 634014 Tomsk, Russia
| | - Daria A. Kamaeva
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, 634014 Tomsk, Russia
| | - Alexey E. Sizikov
- Institute of Clinical Immunology, Siberian Branch of the Russian Academy of Sciences, 630099 Novosibirsk, Russia
| | - Svetlana A. Ivanova
- Mental Health Research Institute, Tomsk National Research Medical Center of the Russian Academy of Sciences, 634014 Tomsk, Russia
| | - Natalia M. Baulina
- Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Olga O. Favorova
- Pirogov Russian National Research Medical University, 117997 Moscow, Russia
| | - Georgy A. Nevinsky
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Valentina N. Buneva
- Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
- Correspondence: ; Tel.: +7-383-363-51-27
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18
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Lang I, Zaitseva O, Wajant H. FcγRs and Their Relevance for the Activity of Anti-CD40 Antibodies. Int J Mol Sci 2022; 23:12869. [PMID: 36361658 PMCID: PMC9655775 DOI: 10.3390/ijms232112869] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/18/2022] [Accepted: 10/20/2022] [Indexed: 03/14/2024] Open
Abstract
Inhibitory targeting of the CD40L-CD40 system is a promising therapeutic option in the field of organ transplantation and is also attractive in the treatment of autoimmune diseases. After early complex results with neutralizing CD40L antibodies, it turned out that lack of Fcγ receptor (FcγR)-binding is the crucial factor for the development of safe inhibitory antibodies targeting CD40L or CD40. Indeed, in recent years, blocking CD40 antibodies not interacting with FcγRs, has proven to be well tolerated in clinical studies and has shown initial clinical efficacy. Stimulation of CD40 is also of considerable therapeutic interest, especially in cancer immunotherapy. CD40 can be robustly activated by genetically engineered variants of soluble CD40L but also by anti-CD40 antibodies. However, the development of CD40L-based agonists is biotechnologically and pharmacokinetically challenging, and anti-CD40 antibodies typically display only strong agonism in complex with FcγRs or upon secondary crosslinking. The latter, however, typically results in poorly developable mixtures of molecule species of varying stoichiometry and FcγR-binding by anti-CD40 antibodies can elicit unwanted side effects such as antibody-dependent cellular cytotoxicity (ADCC) or antibody-dependent cellular phagocytosis (ADCP) of CD40 expressing immune cells. Here, we summarize and compare strategies to overcome the unwanted target cell-destroying activity of anti-CD40-FcγR complexes, especially the use of FcγR type-specific mutants and the FcγR-independent cell surface anchoring of bispecific anti-CD40 fusion proteins. Especially, we discuss the therapeutic potential of these strategies in view of the emerging evidence for the dose-limiting activities of systemic CD40 engagement.
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Affiliation(s)
| | | | - Harald Wajant
- Department of Internal Medicine II, Division of Molecular Internal Medicine, University Hospital Würzburg, Auvera Haus, Grombühlstrasse 12, 97080 Würzburg, Germany
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19
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Moin ASM, Sathyapalan T, Atkin SL, Butler AE. The severity and duration of Hypoglycemia affect platelet-derived protein responses in Caucasians. Cardiovasc Diabetol 2022; 21:202. [PMID: 36203210 PMCID: PMC9541052 DOI: 10.1186/s12933-022-01639-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 09/23/2022] [Indexed: 11/10/2022] Open
Abstract
Objective Severe hypoglycemia is associated with increased cardiovascular death risk, and platelet responses to hypoglycemia (hypo) have been described. However, the impact of deep transient hypo (deep-hypo) versus prolonged milder hypo (mild-hypo) on platelet response is unclear. Research Design and methods Two hypo studies were compared; firstly, mild-hypo in 18-subjects (10 type-2-diabetes (T2D), 8 controls), blood glucose to 2.8mmoL/L (50 mg/dL) for 1-hour; secondly deep-hypo in 46-subjects (23 T2D, 23 controls), blood glucose to < 2.2mmoL/L (< 40 mg/dL) transiently. Platelet-related protein (PRP) responses from baseline to after 1-hour of hypo (mild-hypo) or at deep-hypo were compared, and at 24-hours post-hypo. Slow Off-rate Modified Aptamer (SOMA)-scan plasma protein measurement was used to determine PRP changes for 13 PRPs. Results In controls, from baseline to hypo, differences were seen for four PRPs, three showing increased %change in deep-hypo (Plasminogen activator inhibitor-1(PAI-1), CD40 ligand (CD40LG) and Protein-S), one showing increased %change in mild-hypo (von Willebrand factor (vWF)); at 24-hours in controls, %change for Protein-S remained increased in deep-hypo, whilst % change for vWF and plasminogen were increased in mild-hypo. In T2D, from baseline to hypo, differences were seen for 4 PRPs, three showing increased %change in deep-hypo (PAI-1, platelet glycoprotein VI and Tissue factor), one showing increased %change in mild-hypo (CD40LG); at 24-hours in T2D, %change for CD40LG remained increased, together with vWF, in deep-hypo. Conclusion Both mild-hypo and deep-hypo showed marked PRP changes that continued up to 24-hours, showing that both the severity and duration of hypoglycemia are likely important and that any degree of hypoglycemia may be detrimental for increased cardiovascular risk events through PRP changes. Supplementary Information The online version contains supplementary material available at 10.1186/s12933-022-01639-w.
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Affiliation(s)
- Abu Saleh Md Moin
- Research Department, Royal College of Surgeons in Ireland, PO Box 15503, Adliya, Bahrain
| | | | - Stephen L Atkin
- Research Department, Royal College of Surgeons in Ireland, PO Box 15503, Adliya, Bahrain
| | - Alexandra E Butler
- Research Department, Royal College of Surgeons in Ireland, PO Box 15503, Adliya, Bahrain.
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20
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Strohm L, Ubbens H, Münzel T, Daiber A, Daub S. Role of CD40(L)-TRAF signaling in inflammation and resolution—a double-edged sword. Front Pharmacol 2022; 13:995061. [PMID: 36267276 PMCID: PMC9577411 DOI: 10.3389/fphar.2022.995061] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 09/12/2022] [Indexed: 11/26/2022] Open
Abstract
Cardiovascular diseases (CVD) and cardiovascular risk factors are the leading cause of death in the world today. According to the Global Burden of Disease Study, hypertension together with ischemic heart and cerebrovascular diseases is responsible for approximately 40% of all deaths worldwide. The major pathomechanism underlying almost all CVD is atherosclerosis, an inflammatory disorder of the vascular system. Recent large-scale clinical trials demonstrated that inflammation itself is an independent cardiovascular risk factor. Specific anti-inflammatory therapy could decrease cardiovascular mortality in patients with atherosclerosis (increased markers of inflammation). Inflammation, however, can also be beneficial by conferring so-called resolution, a process that contributes to clearing damaged tissue from cell debris upon cell death and thereby represents an essential step for recovery from, e.g., ischemia/reperfusion damage. Based on these considerations, the present review highlights features of the detrimental inflammatory reactions as well as of the beneficial process of immune cell-triggered resolution. In this context, we discuss the polarization of macrophages to either M1 or M2 phenotype and critically assess the role of the CD40L-CD40-TRAF signaling cascade in atherosclerosis and its potential link to resolution. As CD40L can bind to different cellular receptors, it can initiate a broad range of inflammatory processes that may be detrimental or beneficial. Likewise, the signaling of CD40L downstream of CD40 is mainly determined by activation of TRAF1-6 pathways that again can be detrimental or beneficial. Accordingly, CD40(L)-based therapies may be Janus-faced and require sophisticated fine-tuning in order to promote cardioprotection.
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Affiliation(s)
- Lea Strohm
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Henning Ubbens
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Thomas Münzel
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Andreas Daiber
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
- *Correspondence: Andreas Daiber, ; Steffen Daub,
| | - Steffen Daub
- Department of Cardiology, Cardiology I—Laboratory of Molecular Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
- *Correspondence: Andreas Daiber, ; Steffen Daub,
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21
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The Controversial Role of LPS in Platelet Activation In Vitro. Int J Mol Sci 2022; 23:ijms231810900. [PMID: 36142813 PMCID: PMC9505944 DOI: 10.3390/ijms231810900] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Circulating platelets are responsible for hemostasis and thrombosis but are also primary sensors of pathogens and are involved in innate immunity, inflammation, and sepsis. Sepsis is commonly caused by an exaggerated immune response to bacterial, viral, and fungal infections, and leads to severe thrombotic complications. Among others, the endotoxin lipopolysaccharide (LPS) found in the outer membrane of Gram-negative bacteria is the most common trigger of sepsis. Since the discovery of the expression of the LPS receptor TLR4 in platelets, several studies have investigated the ability of LPS to induce platelet activation and to contribute to a prothrombotic phenotype, per se or in combination with plasma proteins and platelet agonists. This issue, however, is still controversial, as different sources, purity, and concentrations of LPS, different platelet-purification protocols, and different methods of analysis have been used in the past two decades, giving contradictory results. This review summarizes and critically analyzes past and recent publications about LPS-induced platelet activation in vitro. A methodological section illustrates the principal platelet preparation protocols and significant differences. The ability of various sources of LPS to elicit platelet activation in terms of aggregation, granule secretion, cytokine release, ROS production, and interaction with leukocytes and NET formation is discussed.
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22
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The potential applications of microparticles in the diagnosis, treatment, and prognosis of lung cancer. Lab Invest 2022; 20:404. [PMID: 36064415 PMCID: PMC9444106 DOI: 10.1186/s12967-022-03599-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 08/18/2022] [Indexed: 12/02/2022]
Abstract
Microparticles (MPs) are 100–1000 nm heterogeneous submicron membranous vesicles derived from various cell types that express surface proteins and antigenic profiles suggestive of their cellular origin. MPs contain a diverse array of bioactive chemicals and surface receptors, including lipids, nucleic acids, and proteins, which are essential for cell-to-cell communication. The tumour microenvironment (TME) is enriched with MPs that can directly affect tumour progression through their interactions with receptors. Liquid biopsy, a minimally invasive test, is a promising alternative to tissue biopsy for the early screening of lung cancer (LC). The diverse biomolecular information from MPs provides a number of potential biomarkers for LC risk assessment, early detection, diagnosis, prognosis, and surveillance. Remodelling the TME, which profoundly influences immunotherapy and clinical outcomes, is an emerging strategy to improve immunotherapy. Tumour-derived MPs can reverse drug resistance and are ideal candidates for the creation of innovative and effective cancer vaccines. This review described the biogenesis and components of MPs and further summarised their main isolation and quantification methods. More importantly, the review presented the clinical application of MPs as predictive biomarkers in cancer diagnosis and prognosis, their role as therapeutic drug carriers, particularly in anti-tumour drug resistance, and their utility as cancer vaccines. Finally, we discussed current challenges that could impede the clinical use of MPs and determined that further studies on the functional roles of MPs in LC are required.
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Puhm F, Boilard E. Megakaryocytes and platelets embrace diversity in face of adversity. J Thromb Haemost 2022; 20:1947-1950. [PMID: 35656911 DOI: 10.1111/jth.15761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 05/12/2022] [Accepted: 05/12/2022] [Indexed: 11/26/2022]
Affiliation(s)
- Florian Puhm
- Department of Infectious Diseases and Immunity, Centre de recherche du CHU de Québec, Québec, QC, Canada
- Université Laval and Centre de recherche ARThrite, Québec, QC, Canada
| | - Eric Boilard
- Department of Infectious Diseases and Immunity, Centre de recherche du CHU de Québec, Québec, QC, Canada
- Université Laval and Centre de recherche ARThrite, Québec, QC, Canada
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Ahn SH, Burkett A, Paz A, Savarraj JP, Hinds S, Hergenroeder G, Gusdon AM, Ren X, Hong JH, Choi HA. Systemic inflammatory markers of persistent cerebral edema after aneurysmal subarachnoid hemorrhage. J Neuroinflammation 2022; 19:199. [PMID: 35927663 PMCID: PMC9354324 DOI: 10.1186/s12974-022-02564-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 07/12/2022] [Indexed: 11/25/2022] Open
Abstract
Background Cerebral edema (CE) at admission is a surrogate marker of ‘early brain injury’ (EBI) after subarachnoid hemorrhage (SAH). Only recently has the focus on the changes in CE after SAH such as delayed resolution or newly developed CE been examined. Among several factors, an early systemic inflammatory response has been shown to be associated with CE. We investigate inflammatory markers in subjects with early CE which does not resolve, i.e., persistent CE after SAH. Methods Computed tomography scans of SAH patients were graded at admission and at 7 days after SAH for CE using the 0–4 ‘subarachnoid hemorrhage early brain edema score’ (SEBES). SEBES ≤ 2 and SEBES ≥ 3 were considered good and poor grade, respectively. Serum samples from the same subject cohort were collected at 4 time periods (at < 24 h [T1], at 24 to 48 h [T2]. 3–5 days [T3] and 6–8 days [T4] post-admission) and concentration levels of 17 cytokines (implicated in peripheral inflammatory processes) were measured by multiplex immunoassay. Multivariable logistic regression analyses were step-wisely performed to identify cytokines independently associated with persistent CE adjusting for covariables including age, sex and past medical history (model 1), and additional inclusion of clinical and radiographic severity of SAH and treatment modality (model 2). Results Of the 135 patients enrolled in the study, 21 of 135 subjects (15.6%) showed a persistently poor SEBES grade. In multivariate model 1, higher Eotaxin (at T1 and T4), sCD40L (at T4), IL-6 (at T1 and T3) and TNF-α (at T4) were independently associated with persistent CE. In multivariate model 2, Eotaxin (at T4: odds ratio [OR] = 1.019, 95% confidence interval [CI] = 1.002–1.035) and possibly PDGF-AA (at T4), sCD40L (at T4), and TNF-α (at T4) was associated with persistent CE. Conclusions We identified serum cytokines at different time points that were independently associated with persistent CE. Specifically, persistent elevations of Eotaxin is associated with persistent CE after SAH. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02564-1.
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Affiliation(s)
- Sung-Ho Ahn
- Department of Neurology, Pusan National University School of Medicine, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan-si, South Korea
| | - Angela Burkett
- Division of Neurocritical Care, Department of Neurosurgery, University of Texas Health Science Center at Houston, 6431 Fannin, MSB 7.154, Houston, TX, 77030, USA
| | - Atzhiry Paz
- Division of Neurocritical Care, Department of Neurosurgery, University of Texas Health Science Center at Houston, 6431 Fannin, MSB 7.154, Houston, TX, 77030, USA
| | - Jude P Savarraj
- Division of Neurocritical Care, Department of Neurosurgery, University of Texas Health Science Center at Houston, 6431 Fannin, MSB 7.154, Houston, TX, 77030, USA
| | - Sarah Hinds
- Division of Neurocritical Care, Department of Neurosurgery, University of Texas Health Science Center at Houston, 6431 Fannin, MSB 7.154, Houston, TX, 77030, USA
| | - Georgene Hergenroeder
- Division of Neurocritical Care, Department of Neurosurgery, University of Texas Health Science Center at Houston, 6431 Fannin, MSB 7.154, Houston, TX, 77030, USA
| | - Aaron M Gusdon
- Division of Neurocritical Care, Department of Neurosurgery, University of Texas Health Science Center at Houston, 6431 Fannin, MSB 7.154, Houston, TX, 77030, USA
| | - Xuefeng Ren
- Division of Neurocritical Care, Department of Neurosurgery, University of Texas Health Science Center at Houston, 6431 Fannin, MSB 7.154, Houston, TX, 77030, USA
| | - Jeong-Ho Hong
- Department of Neurology, Keimyung University School of Medicine, Dongsan Medical Center, Daegu, South Korea
| | - Huimahn A Choi
- Division of Neurocritical Care, Department of Neurosurgery, University of Texas Health Science Center at Houston, 6431 Fannin, MSB 7.154, Houston, TX, 77030, USA.
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Interleukin-31 and soluble CD40L: new candidate serum biomarkers that predict therapeutic response in multiple sclerosis. Neurol Sci 2022; 43:6271-6278. [DOI: 10.1007/s10072-022-06276-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 07/11/2022] [Indexed: 11/25/2022]
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Zarubova J, Hasani-Sadrabadi MM, Ardehali R, Li S. Immunoengineering strategies to enhance vascularization and tissue regeneration. Adv Drug Deliv Rev 2022; 184:114233. [PMID: 35304171 PMCID: PMC10726003 DOI: 10.1016/j.addr.2022.114233] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 12/11/2022]
Abstract
Immune cells have emerged as powerful regulators of regenerative as well as pathological processes. The vast majority of regenerative immunoengineering efforts have focused on macrophages; however, growing evidence suggests that other cells of both the innate and adaptive immune system are as important for successful revascularization and tissue repair. Moreover, spatiotemporal regulation of immune cells and their signaling have a significant impact on the regeneration speed and the extent of functional recovery. In this review, we summarize the contribution of different types of immune cells to the healing process and discuss ways to manipulate and control immune cells in favor of vascularization and tissue regeneration. In addition to cell delivery and cell-free therapies using extracellular vesicles, we discuss in situ strategies and engineering approaches to attract specific types of immune cells and modulate their phenotypes. This field is making advances to uncover the extraordinary potential of immune cells and their secretome in the regulation of vascularization and tissue remodeling. Understanding the principles of immunoregulation will help us design advanced immunoengineering platforms to harness their power for tissue regeneration.
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Affiliation(s)
- Jana Zarubova
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA; Department of Biomaterials and Tissue Engineering, Institute of Physiology of the Czech Academy of Sciences, Prague 14220, Czech Republic
| | | | - Reza Ardehali
- Division of Cardiology, Department of Internal Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Stem Cell Research Center, University of California, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Song Li
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA; Eli and Edythe Broad Stem Cell Research Center, University of California, Los Angeles, CA 90095, USA; Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA.
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Sagar RC, Ajjan RA, Naseem KM. Non-Traditional Pathways for Platelet Pathophysiology in Diabetes: Implications for Future Therapeutic Targets. Int J Mol Sci 2022; 23:ijms23094973. [PMID: 35563363 PMCID: PMC9104718 DOI: 10.3390/ijms23094973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 04/26/2022] [Accepted: 04/27/2022] [Indexed: 11/23/2022] Open
Abstract
Cardiovascular complications remain the leading cause of morbidity and mortality in individuals with diabetes, driven by interlinked metabolic, inflammatory, and thrombotic changes. Hyperglycaemia, insulin resistance/deficiency, dyslipidaemia, and associated oxidative stress have been linked to abnormal platelet function leading to hyperactivity, and thus increasing vascular thrombotic risk. However, emerging evidence suggests platelets also contribute to low-grade inflammation and additionally possess the ability to interact with circulating immune cells, further driving vascular thrombo-inflammatory pathways. This narrative review highlights the role of platelets in inflammatory and immune processes beyond typical thrombotic effects and the impact these mechanisms have on cardiovascular disease in diabetes. We discuss pathways for platelet-induced inflammation and how platelet reprogramming in diabetes contributes to the high cardiovascular risk that characterises this population. Fully understanding the mechanistic pathways for platelet-induced vascular pathology will allow for the development of more effective management strategies that deal with the causes rather than the consequences of platelet function abnormalities in diabetes.
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28
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CD40-CD40L in Neurological Disease. Int J Mol Sci 2022; 23:ijms23084115. [PMID: 35456932 PMCID: PMC9031401 DOI: 10.3390/ijms23084115] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/02/2022] [Accepted: 04/04/2022] [Indexed: 02/06/2023] Open
Abstract
Immune-inflammatory conditions in the central nervous system (CNS) rely on molecular and cellular interactions which are homeostatically maintained to protect neural tissue from harm. The CD40–CD40L interaction upregulates key proinflammatory molecules, a function best understood in the context of infection, during which B-cells are activated via CD40 signaling to produce antibodies. However, the role of CD40 in neurological disease of non-infectious etiology is unclear. We review the role of CD40–CD40L in traumatic brain injury, Alzheimer’s Disease, Parkinson’s Disease, stroke, epilepsy, nerve injury, multiple sclerosis, ALS, myasthenia gravis and brain tumors. We also highlight therapeutic advancements targeting the CD40 system to either attenuate the neuroinflammatory response or leverage the downstream effects of CD40 signaling for direct tumor cell lysis.
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Espinoza-Derout J, Shao XM, Lao CJ, Hasan KM, Rivera JC, Jordan MC, Echeverria V, Roos KP, Sinha-Hikim AP, Friedman TC. Electronic Cigarette Use and the Risk of Cardiovascular Diseases. Front Cardiovasc Med 2022; 9:879726. [PMID: 35463745 PMCID: PMC9021536 DOI: 10.3389/fcvm.2022.879726] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 03/11/2022] [Indexed: 12/12/2022] Open
Abstract
Electronic cigarettes or e-cigarettes are the most frequently used tobacco product among adolescents. Despite the widespread use of e-cigarettes and the known detrimental cardiac consequences of nicotine, the effects of e-cigarettes on the cardiovascular system are not well-known. Several in vitro and in vivo studies delineating the mechanisms of the impact of e-cigarettes on the cardiovascular system have been published. These include mechanisms associated with nicotine or other components of the aerosol or thermal degradation products of e-cigarettes. The increased hyperlipidemia, sympathetic dominance, endothelial dysfunction, DNA damage, and macrophage activation are prominent effects of e-cigarettes. Additionally, oxidative stress and inflammation are unifying mechanisms at many levels of the cardiovascular impairment induced by e-cigarette exposure. This review outlines the contribution of e-cigarettes in the development of cardiovascular diseases and their molecular underpinnings.
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Affiliation(s)
- Jorge Espinoza-Derout
- Division of Endocrinology, Metabolism and Molecular Medicine, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Xuesi M. Shao
- Division of Endocrinology, Metabolism and Molecular Medicine, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Candice J. Lao
- Division of Endocrinology, Metabolism and Molecular Medicine, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States
| | - Kamrul M. Hasan
- Division of Endocrinology, Metabolism and Molecular Medicine, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Juan Carlos Rivera
- Division of Endocrinology, Metabolism and Molecular Medicine, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States
| | - Maria C. Jordan
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Valentina Echeverria
- Research and Development Service, Bay Pines VA Healthcare System, Bay Pines, FL, United States
- Laboratorio de Neurobiología, Facultad de Ciencias de la Salud, Universidad San Sebastián, Concepción, Chile
| | - Kenneth P. Roos
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Amiya P. Sinha-Hikim
- Division of Endocrinology, Metabolism and Molecular Medicine, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
| | - Theodore C. Friedman
- Division of Endocrinology, Metabolism and Molecular Medicine, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States
- David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, United States
- Friends Research Institute, Cerritos, CA, United States
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30
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Valet C, Magnen M, Qiu L, Cleary SJ, Wang KM, Ranucci S, Grockowiak E, Boudra R, Conrad C, Seo Y, Calabrese DR, Greenland JR, Leavitt AD, Passegué E, Méndez-Ferrer S, Swirski FK, Looney MR. Sepsis promotes splenic production of a protective platelet pool with high CD40 ligand expression. J Clin Invest 2022; 132:e153920. [PMID: 35192546 PMCID: PMC8970674 DOI: 10.1172/jci153920] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 02/16/2022] [Indexed: 11/17/2022] Open
Abstract
Platelets have a wide range of functions including critical roles in hemostasis, thrombosis, and immunity. We hypothesized that during acute inflammation, such as in life-threatening sepsis, there are fundamental changes in the sites of platelet production and phenotypes of resultant platelets. Here, we showed during sepsis that the spleen was a major site of megakaryopoiesis and platelet production. Sepsis provoked an adrenergic-dependent mobilization of megakaryocyte-erythrocyte progenitors (MEPs) from the bone marrow to the spleen, where IL-3 induced their differentiation into megakaryocytes (MKs). In the spleen, immune-skewed MKs produced a CD40 ligandhi platelet population with potent immunomodulatory functions. Transfusions of post-sepsis platelets enriched from splenic production enhanced immune responses and reduced overall mortality in sepsis-challenged animals. These findings identify a spleen-derived protective platelet population that may be broadly immunomodulatory in acute inflammatory states such as sepsis.
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Affiliation(s)
- Colin Valet
- Department of Medicine, UCSF, San Francisco, California, USA
| | - Mélia Magnen
- Department of Medicine, UCSF, San Francisco, California, USA
| | - Longhui Qiu
- Department of Medicine, UCSF, San Francisco, California, USA
| | - Simon J. Cleary
- Department of Medicine, UCSF, San Francisco, California, USA
| | - Kristin M. Wang
- Department of Medicine, UCSF, San Francisco, California, USA
| | - Serena Ranucci
- Department of Medicine, UCSF, San Francisco, California, USA
| | - Elodie Grockowiak
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
| | - Rafik Boudra
- Department of Dermatology, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | | | - Yurim Seo
- Department of Medicine, UCSF, San Francisco, California, USA
| | | | | | | | - Emmanuelle Passegué
- Columbia Stem Cell Initiative, Department of Genetics and Development, Columbia University Irving Medical Center, New York, New York, USA
| | - Simón Méndez-Ferrer
- Wellcome-MRC Cambridge Stem Cell Institute, Cambridge, United Kingdom
- NHS Blood and Transplant, Cambridge, United Kingdom
| | - Filip K. Swirski
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Mark R. Looney
- Department of Medicine, UCSF, San Francisco, California, USA
- Department of Laboratory Medicine, UCSF, San Francisco, California, USA
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Cognasse F, Duchez AC, Audoux E, Ebermeyer T, Arthaud CA, Prier A, Eyraud MA, Mismetti P, Garraud O, Bertoletti L, Hamzeh-Cognasse H. Platelets as Key Factors in Inflammation: Focus on CD40L/CD40. Front Immunol 2022; 13:825892. [PMID: 35185916 PMCID: PMC8850464 DOI: 10.3389/fimmu.2022.825892] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/14/2022] [Indexed: 12/16/2022] Open
Abstract
Platelets are anucleate cytoplasmic fragments derived from the fragmentation of medullary megakaryocytes. Activated platelets adhere to the damaged endothelium by means of glycoproteins on their surface, forming the platelet plug. Activated platelets can also secrete the contents of their granules, notably the growth factors contained in the α-granules, which are involved in platelet aggregation and maintain endothelial activation, but also contribute to vascular repair and angiogenesis. Platelets also have a major inflammatory and immune function in antibacterial defence, essentially through their Toll-like Receptors (TLRs) and Sialic acid-binding immunoglobulin-type lectin (SIGLEC). Platelet activation also contributes to the extensive release of anti- or pro-inflammatory mediators such as IL-1β, RANTES (Regulated on Activation, Normal T Expressed and Secreted) or CD154, also known as the CD40-ligand. Platelets are involved in the direct activation of immune cells, polynuclear neutrophils (PNNs) and dendritic cells via the CD40L/CD40 complex. As a general rule, all of the studies presented in this review show that platelets are capable of covering most of the stages of inflammation, primarily through the CD40L/CD40 interaction, thus confirming their own role in this pathophysiological condition.
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Affiliation(s)
- Fabrice Cognasse
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Etienne, France.,SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France
| | - Anne Claire Duchez
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Etienne, France.,SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France
| | - Estelle Audoux
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Etienne, France.,SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France
| | - Theo Ebermeyer
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Etienne, France.,SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France
| | - Charles Antoine Arthaud
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Etienne, France.,SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France
| | - Amelie Prier
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Etienne, France.,SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France
| | - Marie Ange Eyraud
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Etienne, France.,SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France
| | - Patrick Mismetti
- SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France.,Vascular and Therapeutic Medicine Department, Saint-Etienne University Hospital Center, Saint-Etienne, France
| | - Olivier Garraud
- SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France
| | - Laurent Bertoletti
- SAINBIOSE, INSERM, U1059, University of Lyon, Saint-Etienne, France.,Vascular and Therapeutic Medicine Department, Saint-Etienne University Hospital Center, Saint-Etienne, France
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Underwood ML, Park B, Uebelhoer LS, Gu G, Kunkel LE, Korthuis PT, Cook RR, Sekaly RP, Ribeiro SP, Lancioni CL. Chronic Alcohol Exposure Among People Living with HIV Is Associated with Innate Immune Activation and Alterations in Monocyte Phenotype and Plasma Cytokine Profile. Front Immunol 2022; 13:867937. [PMID: 35371104 PMCID: PMC8971672 DOI: 10.3389/fimmu.2022.867937] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 02/23/2022] [Indexed: 12/25/2022] Open
Abstract
Despite advances in antiretroviral therapy, chronic immune activation continues to be observed among individuals with well-controlled HIV viral loads, and is associated with non-AIDS defining morbidities among people living with HIV. Alcohol use disorder impacts a significant proportion of individuals living with HIV, and alcohol exposure is known to damage the intestinal epithelium which may increase translocation of pathogens and their molecular products, driving systemic immune activation and dysregulation. The aim of this study was to determine if adults living with HIV with well-controlled viral loads, who also suffer from alcohol use disorder with and without hepatitis C virus co-infection (n=23), exhibit evidence of advanced systemic immune activation, intestinal damage, and microbial translocation, as compared to adults living with HIV who are not exposed to chronic alcohol or other substances of abuse (n=29). The impact of a 1-month intervention to treat alcohol-use disorder was also examined. Alcohol-use disorder was associated with evidence of advanced innate immune activation, alterations in monocyte phenotype including increased expression of Toll-like receptor 4, increased burden of stimulatory ligands for Toll-like receptor 4, and alterations in plasma cytokine signature, most notably elevations in soluble CD40 ligand and transforming growth factor beta. Alcohol-associated immune activation was more pronounced among individuals with hepatitis C virus co-infection. Although the 1-month intervention to treat alcohol use disorder did not result in significant reductions in the interrogated indicators of immune activation, our findings suggest that chronic alcohol exposure is a major modifiable risk factor for chronic immune activation and dysregulation among people-living with HIV.
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Affiliation(s)
- Michelle L. Underwood
- Department of Pediatrics, Oregon Health & Science University, Portland, OR, United States
| | - Byung Park
- Knight-Cancer Institute, Department of Biostatistics, Oregon Health & Science University, Portland, OR, United States
| | - Luke S. Uebelhoer
- Department of Pediatrics, Oregon Health & Science University, Portland, OR, United States
| | - Geoffrey Gu
- Undergraduate Studies, University of Southern California, Los Angeles, CA, United States
| | - Lynn E. Kunkel
- Department of Medicine, Oregon Health & Science University, Portland, OR, United States
| | - Philip T. Korthuis
- Department of Medicine, Oregon Health & Science University, Portland, OR, United States
- Department of Public Health, Oregon Health & Science University, Portland, OR, United States
| | - Ryan R. Cook
- Department of Medicine, Oregon Health & Science University, Portland, OR, United States
| | - Rafick Pierre Sekaly
- Department of Pathology & Translational Medicine, Emory University School of Medicine, Atlanta, GA, United States
| | - Susan Pereira Ribeiro
- Department of Pathology & Translational Medicine, Emory University School of Medicine, Atlanta, GA, United States
| | - Christina L. Lancioni
- Department of Pediatrics, Oregon Health & Science University, Portland, OR, United States
- *Correspondence: Christina L. Lancioni,
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Al-Tamimi AO, Yusuf AM, Jayakumar MN, Ansari AW, Elhassan M, AbdulKarim F, Kannan M, Halwani R, Ahmad F. SARS-CoV-2 infection induces soluble platelet activation markers and PAI-1 in the early moderate stage of COVID-19. Int J Lab Hematol 2022; 44:712-721. [PMID: 35266284 PMCID: PMC9111479 DOI: 10.1111/ijlh.13829] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 01/29/2022] [Accepted: 03/02/2022] [Indexed: 01/08/2023]
Abstract
Introduction Coagulation dysfunction and thromboembolism emerge as strong comorbidity factors in severe COVID‐19. However, it is unclear when particularly platelet activation markers and coagulation factors dysregulated during the pathogenesis of COVID‐19. Here, we sought to assess the levels of coagulation and platelet activation markers at moderate and severe stages of COVID‐19 to understand the pathogenesis. Methods To understand this, hospitalized COVID‐19 patients with (severe cases that required intensive care) or without pneumonia (moderate cases) were recruited. Phenotypic and molecular characterizations were performed employing basic coagulation tests including prothrombin time (PT), activated partial thromboplastin time (APTT), D‐Dimer, and tissue factor pathway inhibitor (TFPI). The flow cytometry‐based multiplex assays were performed to assess FXI, anti‐thrombin, prothrombin, fibrinogen, FXIII, P‐selectin, sCD40L, plasminogen, tissue plasminogen activator (tPA), plasminogen activator inhibitor‐1 (PAI‐1), and D‐Dimer. Results The investigations revealed induction of plasma P‐selectin and CD40 ligand (sCD40L) in moderate COVID‐19 cases, which were significantly abolished with the progression of COVID‐19 severity. Moreover, a profound reduction in plasma tissue factor pathway inhibitor (TFPI) and FXIII were identified particularly in the severe COVID‐19. Further analysis revealed fibrinogen induction in both moderate and severe patients. Interestingly, an elevated PAI‐1 more prominently in moderate, and tPA particularly in severe COVID‐19 cases were observed. Particularly, the levels of fibrinogen and tPA directly correlated with the severity of the disease. Conclusions In summary, induction of soluble P‐selectin, sCD40L, fibrinogen, and PAI‐1 suggests the activation of platelets and coagulation system at the moderate stage before COVID‐19 patients require intensive care. These findings would help in designing better thromboprophylaxis to limit the COVID‐19 severity.
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Affiliation(s)
- Abaher O Al-Tamimi
- Cardiovascular Research Group, Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE
| | - Ayesha M Yusuf
- Cardiovascular Research Group, Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE
| | - Manju N Jayakumar
- Cardiovascular Research Group, Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE
| | - Abdul W Ansari
- Cardiovascular Research Group, Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE.,Dermatology Institute, Translational Research Institute, Academic Health Systems, Hamad Medical Corporation, Doha, Qatar
| | - Mona Elhassan
- Department of Internal Medicine, Rashid Hospital, Dubai, UAE
| | | | - Meganathan Kannan
- Blood and Vascular Biology Research Lab, Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur, India
| | - Rabih Halwani
- Department of Basic Medical Sciences, College of Medicine, University of Sharjah, Sharjah, UAE
| | - Firdos Ahmad
- Cardiovascular Research Group, Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE.,Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, UAE
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Platelet Membrane: An Outstanding Factor in Cancer Metastasis. MEMBRANES 2022; 12:membranes12020182. [PMID: 35207103 PMCID: PMC8875259 DOI: 10.3390/membranes12020182] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/27/2022] [Accepted: 01/31/2022] [Indexed: 12/02/2022]
Abstract
In addition to being biological barriers where the internalization or release of biomolecules is decided, cell membranes are contact structures between the interior and exterior of the cell. Here, the processes of cell signaling mediated by receptors, ions, hormones, cytokines, enzymes, growth factors, extracellular matrix (ECM), and vesicles begin. They triggering several responses from the cell membrane that include rearranging its components according to the immediate needs of the cell, for example, in the membrane of platelets, the formation of filopodia and lamellipodia as a tissue repair response. In cancer, the cancer cells must adapt to the new tumor microenvironment (TME) and acquire capacities in the cell membrane to transform their shape, such as in the case of epithelial−mesenchymal transition (EMT) in the metastatic process. The cancer cells must also attract allies in this challenging process, such as platelets, fibroblasts associated with cancer (CAF), stromal cells, adipocytes, and the extracellular matrix itself, which limits tumor growth. The platelets are enucleated cells with fairly interesting growth factors, proangiogenic factors, cytokines, mRNA, and proteins, which support the development of a tumor microenvironment and support the metastatic process. This review will discuss the different actions that platelet membranes and cancer cell membranes carry out during their relationship in the tumor microenvironment and metastasis.
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35
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Alipour R, Sereshki N, Rafiee M, Reza Mofid M, Alsahebfosoul F, Pourazar A. Blood IgMs from healthy donors and patients with systemic lupus erythematosus reduce the inflammatory properties of platelets from healthy donors. Immunobiology 2022; 227:152193. [DOI: 10.1016/j.imbio.2022.152193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 02/15/2022] [Accepted: 02/23/2022] [Indexed: 11/27/2022]
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Somoza M, Bertelli A, Pratto CA, Verdun RE, Campetella O, Mucci J. Trypanosoma cruzi Induces B Cells That Regulate the CD4 + T Cell Response. Front Cell Infect Microbiol 2022; 11:789373. [PMID: 35071041 PMCID: PMC8766854 DOI: 10.3389/fcimb.2021.789373] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/06/2021] [Indexed: 12/12/2022] Open
Abstract
Trypanosoma cruzi infection induces a polyclonal B cell proliferative response characterized by maturation to plasma cells, excessive generation of germinal centers, and secretion of parasite-unrelated antibodies. Although traditionally reduced to the humoral response, several infectious and non-infectious models revealed that B lymphocytes could regulate and play crucial roles in cellular responses. Here, we analyze the trypomastigote-induced effect on B cells, their effects on CD4+ T cells, and their correlation with in vivo findings. The trypomastigotes were able to induce the proliferation and the production of IL-10 or IL-6 of naïve B cells in co-culture experiments. Also, we found that IL-10-producing B220lo cells were elicited in vivo. We also found up-regulated expression of FasL and PD-L1, proteins involved in apoptosis induction and inhibition of TCR signaling, and of BAFF and APRIL mRNAs, two B-cell growth factors. Interestingly, it was observed that IL-21, which plays a critical role in regulatory B cell differentiation, was significantly increased in B220+/IL-21+ in in vivo infections. This is striking since the secretion of IL-21 is associated with T helper follicular cells. Furthermore, trypomastigote-stimulated B-cell conditioned medium dramatically reduced the proliferation and increased the apoptotic rate on CD3/CD28 activated CD4+ T cells, suggesting the development of effective regulatory B cells. In this condition, CD4+ T cells showed a marked decrease in proliferation and viability with marginal IL-2 or IFNγ secretion, which is counterproductive with an efficient immune response against T. cruzi. Altogether, our results show that B lymphocytes stimulated with trypomastigotes adopt a particular phenotype that exerts a strong regulation of this T cell compartment by inducing apoptosis, arresting cell division, and affecting the developing of a proinflammatory response.
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Affiliation(s)
- Martín Somoza
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín-CONICET, Buenos Aires, Argentina
| | - Adriano Bertelli
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín-CONICET, Buenos Aires, Argentina
| | - Cecilia A Pratto
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín-CONICET, Buenos Aires, Argentina
| | - Ramiro E Verdun
- Sylvester Comprehensive Cancer Center and Division of Hematology, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Oscar Campetella
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín-CONICET, Buenos Aires, Argentina
| | - Juan Mucci
- Instituto de Investigaciones Biotecnológicas, Universidad Nacional de San Martín-CONICET, Buenos Aires, Argentina
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37
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Muralidharan S, Njenga M, Garron T, Bondensgaard K, Paolini JF. Preclinical immunopharmacologic assessment of KPL-404, a novel, humanized, non-depleting antagonistic anti-CD40 monoclonal antibody. J Pharmacol Exp Ther 2022; 381:12-21. [DOI: 10.1124/jpet.121.000881] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 01/10/2022] [Indexed: 11/22/2022] Open
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38
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The posttraumatic response of CD4+ regulatory T cells is modulated by direct cell-cell contact via CD40L- and P-selectin-dependent pathways. Cent Eur J Immunol 2021; 46:283-294. [PMID: 34764800 PMCID: PMC8574106 DOI: 10.5114/ceji.2021.109171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 05/14/2021] [Indexed: 12/14/2022] Open
Abstract
CD4+ FoxP3+ regulatory T cells (CD4+ Tregs) are important for the posttraumatic anti-inflammatory host response. As described previously, platelets are able to modulate CD4+ Treg activity in a reciprocally activating interaction following injury. The underlying mechanisms of the posttraumatic interaction between platelets and CD4+ Tregs remain unclear. We investigated the potential influence of CD40L and P-selectin, molecules known to be involved in direct cell contact of these cell types. In a murine burn injury model, the potential interaction pathways were addressed using CD40L- and P-selectin-deficient mice. Draining lymph nodes were harvested following trauma (1 h) and following a sham procedure. Early rapid activation of CD4+ Tregs was assessed by phospho-flow cytometry (signaling molecules (p)PKC-δ and (p)ZAP-70). Platelet function was analyzed performing rotational thromboelastometry (ROTEM). We hypothesized that disruption of the direct cell-cell contact via CD40L and P-selectin would affect posttraumatic activation of CD4+ Tregs and influence the hemostatic function of platelets. Indeed, while injury induced early activation of CD4+ Tregs in wild-type mice (ZAP-70: p = 0.13, pZAP-70: p < 0.05, PKC-δ: p < 0.05, pPKC-δ: p < 0.05), disruption of CD40L-dependent interaction (ZAP-70: p = 0.57, pZAP-70: p = 0.68, PKC-δ: p = 0.68, pPKC-δ: p = 0.9) or P-selectin-dependent interaction (ZAP-70: p = 0.78, pZAP-70: p = 0.58, PKC-δ: p = 0.81, pPKC-δ: p = 0.73) resulted in reduced posttraumatic activation. Furthermore, hemostatic function was impaired towards hypocoagulability in either deficiency. Our results suggest that the posttraumatic activation of CD4+ Tregs and hemostatic function of platelets are affected by direct cell-cell-signaling via CD40L and P-selectin.
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39
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Jansen EE, Braun A, Jansen P, Hartmann M. Platelet-Therapeutics to Improve Tissue Regeneration and Wound Healing-Physiological Background and Methods of Preparation. Biomedicines 2021; 9:biomedicines9080869. [PMID: 34440073 PMCID: PMC8389548 DOI: 10.3390/biomedicines9080869] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/16/2021] [Accepted: 07/19/2021] [Indexed: 12/18/2022] Open
Abstract
Besides their function in primary hemostasis, platelets are critically involved in the physiological steps leading to wound healing and tissue repair. For this purpose, platelets have a complex set of receptors allowing the recognition, binding, and manipulation of extracellular structures and the detection of pathogens and tissue damage. Intracellular vesicles contain a huge set of mediators that can be released to the extracellular space to coordinate the action of platelets as other cell types for tissue repair. Therapeutically, the most frequent use of platelets is the intravenous application of platelet concentrates in case of thrombocytopenia or thrombocytopathy. However, there is increasing evidence that the local application of platelet-rich concentrates and platelet-rich fibrin can improve wound healing and tissue repair in various settings in medicine and dentistry. For the therapeutic use of platelets in wound healing, several preparations are available in clinical practice. In the present study we discuss the physiology and the cellular mechanisms of platelets in hemostasis and wound repair, the methods used for the preparation of platelet-rich concentrates and platelet-rich fibrin, and highlight some examples of the therapeutic use in medicine and dentistry.
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Affiliation(s)
- Ellen E. Jansen
- Clinic for Operative Dentistry, Periodontology and Preventive Dentistry, RWTH Aachen University, 52074 Aachen, Germany; (E.E.J.); (A.B.); (P.J.)
| | - Andreas Braun
- Clinic for Operative Dentistry, Periodontology and Preventive Dentistry, RWTH Aachen University, 52074 Aachen, Germany; (E.E.J.); (A.B.); (P.J.)
| | - Patrick Jansen
- Clinic for Operative Dentistry, Periodontology and Preventive Dentistry, RWTH Aachen University, 52074 Aachen, Germany; (E.E.J.); (A.B.); (P.J.)
| | - Matthias Hartmann
- Klinik für Anästhesiologie und Intensivmedizin, Universitätsklinikum Essen, Universität Duisburg-Essen, 45122 Essen, Germany
- Correspondence:
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40
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Baidildinova G, Nagy M, Jurk K, Wild PS, Ten Cate H, van der Meijden PEJ. Soluble Platelet Release Factors as Biomarkers for Cardiovascular Disease. Front Cardiovasc Med 2021; 8:684920. [PMID: 34235190 PMCID: PMC8255615 DOI: 10.3389/fcvm.2021.684920] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/24/2021] [Indexed: 12/19/2022] Open
Abstract
Platelets are the main players in thrombotic diseases, where activated platelets not only mediate thrombus formation but also are involved in multiple interactions with vascular cells, inflammatory components, and the coagulation system. Although in vitro reactivity of platelets provides information on the function of circulating platelets, it is not a full reflection of the in vivo activation state, which may be relevant for thrombotic risk assessment in various disease conditions. Therefore, studying release markers of activated platelets in plasma is of interest. While this type of study has been done for decades, there are several new discoveries that highlight the need for a critical assessment of the available tests and indications for platelet release products. First, new insights have shown that platelets are not only prominent players in arterial vascular disease, but also in venous thromboembolism and atrial fibrillation. Second, knowledge of the platelet proteome has dramatically expanded over the past years, which contributed to an increasing array of tests for proteins released and shed from platelets upon activation. Identification of changes in the level of plasma biomarkers associated with upcoming thromboembolic events allows timely and individualized adjustment of the treatment strategy to prevent disease aggravation. Therefore, biomarkers of platelet activation may become a valuable instrument for acute event prognosis. In this narrative review based on a systematic search of the literature, we summarize the process of platelet activation and release products, discuss the clinical context in which platelet release products have been measured as well as the potential clinical relevance.
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Affiliation(s)
- Gaukhar Baidildinova
- Departments of Biochemistry and Internal Medicine, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, Netherlands.,Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Magdolna Nagy
- Departments of Biochemistry and Internal Medicine, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, Netherlands
| | - Kerstin Jurk
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site RhineMain, Mainz, Germany
| | - Philipp S Wild
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany.,DZHK (German Center for Cardiovascular Research), Partner Site RhineMain, Mainz, Germany.,Preventive Cardiology and Preventive Medicine, Center for Cardiology, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Hugo Ten Cate
- Departments of Biochemistry and Internal Medicine, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, Netherlands.,Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg-University Mainz, Mainz, Germany.,Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center, Maastricht, Netherlands
| | - Paola E J van der Meijden
- Departments of Biochemistry and Internal Medicine, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, Netherlands.,Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center, Maastricht, Netherlands
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41
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Thrombopoietin, Soluble CD40 Ligand, and Platelet Count During Veno-arterial Extracorporeal Membrane Oxygenation. ASAIO J 2021; 68:e77-e79. [PMID: 34081052 DOI: 10.1097/mat.0000000000001508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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42
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Promoting platelets is a therapeutic option to combat severe viral infection of the lung. Blood Adv 2021; 4:1640-1642. [PMID: 32315397 PMCID: PMC7189284 DOI: 10.1182/bloodadvances.2020001669] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 03/25/2020] [Indexed: 02/07/2023] Open
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43
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Pretorius E. Platelets in HIV: A Guardian of Host Defence or Transient Reservoir of the Virus? Front Immunol 2021; 12:649465. [PMID: 33968041 PMCID: PMC8102774 DOI: 10.3389/fimmu.2021.649465] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 04/06/2021] [Indexed: 01/28/2023] Open
Abstract
The immune and inflammatory responses of platelets to human immunodeficiency virus 1 (HIV-1) and its envelope proteins are of great significance to both the treatment of the infection, and to the comorbidities related to systemic inflammation. Platelets can interact with the HIV-1 virus itself, or with viral membrane proteins, or with dysregulated inflammatory molecules in circulation, ensuing from HIV-1 infection. Platelets can facilitate the inhibition of HIV-1 infection via endogenously-produced inhibitors of HIV-1 replication, or the virus can temporarily hide from the immune system inside platelets, whereby platelets act as HIV-1 reservoirs. Platelets are therefore both guardians of the host defence system, and transient reservoirs of the virus. Such reservoirs may be of particular significance during combination antiretroviral therapy (cART) interruption, as it may drive viral persistence, and result in significant implications for treatment. Both HIV-1 envelope proteins and circulating inflammatory molecules can also initiate platelet complex formation with immune cells and erythrocytes. Complex formation cause platelet hypercoagulation and may lead to an increased thrombotic risk. Ultimately, HIV-1 infection can initiate platelet depletion and thrombocytopenia. Because of their relatively short lifespan, platelets are important signalling entities, and could be targeted more directly during HIV-1 infection and cART.
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Affiliation(s)
- Etheresia Pretorius
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
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44
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Rolla R, Puricelli C, Bertoni A, Boggio E, Gigliotti CL, Chiocchetti A, Cappellano G, Dianzani U. Platelets: 'multiple choice' effectors in the immune response and their implication in COVID-19 thromboinflammatory process. Int J Lab Hematol 2021; 43:895-906. [PMID: 33749995 PMCID: PMC8251141 DOI: 10.1111/ijlh.13516] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/05/2021] [Accepted: 02/26/2021] [Indexed: 12/12/2022]
Abstract
Although platelets are traditionally recognized for their central role in hemostasis, the presence of chemotactic factors, chemokines, adhesion molecules, and costimulatory molecules in their granules and membranes indicates that they may play an immunomodulatory role in the immune response, flanking their capacity to trigger blood coagulation and inflammation. Indeed, platelets play a role not only in the innate immune response, through the expression of Toll‐like receptors (TLRs) and release of inflammatory cytokines, but also in the adaptive immune response, through expression of key costimulatory molecules and major histocompatibility complex (MHC) molecules capable to activate T cells. Moreover, platelets release huge amounts of extracellular vesicles capable to interact with multiple immune players. The function of platelets thus extends beyond aggregation and implies a multifaceted interplay between hemostasis, inflammation, and the immune response, leading to the amplification of the body's defense processes on one hand, but also potentially degenerating into life‐threatening pathological processes on the other. This narrative review summarizes the current knowledge and the most recent updates on platelet immune functions and interactions with infectious agents, with a particular focus on their involvement in COVID‐19, whose pathogenesis involves a dysregulation of hemostatic and immune processes in which platelets may be determinant causative agents.
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Affiliation(s)
- Roberta Rolla
- IRCAD & Department of Health Sciences, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy.,Clinical Chemistry Laboratory, Maggiore della Carità University Hospital, Novara, Italy
| | - Chiara Puricelli
- IRCAD & Department of Health Sciences, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy.,Clinical Chemistry Laboratory, Maggiore della Carità University Hospital, Novara, Italy
| | - Alessandra Bertoni
- Department of Translational Medicine, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy
| | - Elena Boggio
- IRCAD & Department of Health Sciences, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy
| | - Casimiro Luca Gigliotti
- IRCAD & Department of Health Sciences, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy
| | - Annalisa Chiocchetti
- IRCAD & Department of Health Sciences, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy.,Center for translational research on autoimmune and allergic diseases - CAAD, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy
| | - Giuseppe Cappellano
- IRCAD & Department of Health Sciences, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy
| | - Umberto Dianzani
- IRCAD & Department of Health Sciences, Amedeo Avogadro University of Eastern Piedmont, Novara, Italy.,Clinical Chemistry Laboratory, Maggiore della Carità University Hospital, Novara, Italy
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45
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Cognasse F, Hally K, Fauteux-Daniel S, Eyraud MA, Arthaud CA, Fagan J, Mismetti P, Hamzeh-Cognasse H, Laradi S, Garraud O, Larsen P. Effects and Side Effects of Platelet Transfusion. Hamostaseologie 2021; 41:128-135. [PMID: 33711849 DOI: 10.1055/a-1347-6551] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Aside from their canonical role in hemostasis, it is increasingly recognized that platelets have inflammatory functions and can regulate both adaptive and innate immune responses. The main topic this review aims to cover is the proinflammatory effects and side effects of platelet transfusion. Platelets prepared for transfusion are subject to stress injury upon collection, preparation, and storage. With these types of stress, they undergo morphologic, metabolic, and functional modulations which are likely to induce platelet activation and the release of biological response modifiers (BRMs). As a consequence, platelet concentrates (PCs) accumulate BRMs during processing and storage, and these BRMs are ultimately transfused alongside platelets. It has been shown that BRMs present in PCs can induce immune responses and posttransfusion reactions in the transfusion recipient. Several recent reports within the transfusion literature have investigated the concept of platelets as immune cells. Nevertheless, current and future investigations will face the challenge of encompassing the immunological role of platelets in the scope of transfusion.
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Affiliation(s)
- Fabrice Cognasse
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Étienne, France.,SAINBIOSE, INSERM U1059, University of Lyon, Université Jean-Monnet-Saint-Etienne, France, France
| | - Kathryn Hally
- Department of Surgery and Anaesthesia, University of Otago, Wellington, New Zealand.,Wellington Cardiovascular Research Group, Wellington, New Zealand.,School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Sebastien Fauteux-Daniel
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Étienne, France.,SAINBIOSE, INSERM U1059, University of Lyon, Université Jean-Monnet-Saint-Etienne, France, France
| | - Marie-Ange Eyraud
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Étienne, France.,SAINBIOSE, INSERM U1059, University of Lyon, Université Jean-Monnet-Saint-Etienne, France, France
| | - Charles-Antoine Arthaud
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Étienne, France.,SAINBIOSE, INSERM U1059, University of Lyon, Université Jean-Monnet-Saint-Etienne, France, France
| | - Jocelyne Fagan
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Étienne, France.,SAINBIOSE, INSERM U1059, University of Lyon, Université Jean-Monnet-Saint-Etienne, France, France
| | - Patrick Mismetti
- SAINBIOSE, INSERM U1059, University of Lyon, Université Jean-Monnet-Saint-Etienne, France, France
| | - Hind Hamzeh-Cognasse
- SAINBIOSE, INSERM U1059, University of Lyon, Université Jean-Monnet-Saint-Etienne, France, France
| | - Sandrine Laradi
- Etablissement Français du Sang Auvergne-Rhône-Alpes, Saint-Étienne, France.,SAINBIOSE, INSERM U1059, University of Lyon, Université Jean-Monnet-Saint-Etienne, France, France
| | - Olivier Garraud
- SAINBIOSE, INSERM U1059, University of Lyon, Université Jean-Monnet-Saint-Etienne, France, France
| | - Peter Larsen
- Department of Surgery and Anaesthesia, University of Otago, Wellington, New Zealand.,Wellington Cardiovascular Research Group, Wellington, New Zealand.,School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
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46
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Kasuya A, Tokura Y, Honda T. CD40L from platelet, endothelial cell, and smooth muscle cell may contribute to the proliferation of tumor cell in intravascular large B cell lymphoma. J Dermatol 2021; 48:e180-e181. [PMID: 33560569 DOI: 10.1111/1346-8138.15786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Akira Kasuya
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yoshiki Tokura
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tetsuya Honda
- Department of Dermatology, Hamamatsu University School of Medicine, Hamamatsu, Japan
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47
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Inflammatory Biomarkers in Postural Orthostatic Tachycardia Syndrome with Elevated G-Protein-Coupled Receptor Autoantibodies. J Clin Med 2021; 10:jcm10040623. [PMID: 33562074 PMCID: PMC7914580 DOI: 10.3390/jcm10040623] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 01/28/2021] [Accepted: 02/01/2021] [Indexed: 12/12/2022] Open
Abstract
A growing body of evidence suggests that postural orthostatic tachycardia syndrome (POTS) may be an autoimmune disorder. We have reported in a previous manuscript that 89% of POTS patients (n = 55) had elevations in G-protein-coupled adrenergic A1 receptor autoantibodies and 53% had elevations in muscarinic acetylcholine M4 receptor autoantibodies, as assessed by ELISA. Patients with autoimmune disorders have been reported with a variety of elevated cytokines and cytokines (such as rheumatoid arthritis); thus, we evaluated a limited number of cytokines/chemokines in POTS patients with elevated adrenergic and muscarinic receptor autoantibodies. We utilized the plasma of 34 patients from a previous study; all of the patients (100%) had autoantibodies against the A1 adrenergic receptor and 55.9% (19/34) had autoantibodies against the M4 muscarinic acetylcholine receptor. In particular, the plasma cytokine/chemokine levels were measured as biomarkers of inflammation by Quantibody® technology (Raybiotech, Peachtree Corners, GA, USA). We also evaluated the platelet dense granule numbers, as these patients frequently complain of symptoms related to platelet dysfunction. Patients were predominantly young females who displayed a multitude of co-morbidities but generally reported viral-like symptoms preceding episodes of syncope. Eighty five percent (29/34) had platelet storage pool deficiency. Patients had elevations in five of ten cytokine/chemokines biomarkers (IL1β, IL21, TNFα, INFγ, and CD30), whereas two biomarkers had decreased levels (CD40L and RANTES). Our observations demonstrate that POTS patients known to have autoantibodies against the G-protein-coupled adrenergic A1 receptor have abnormal plasma concentrations of inflammatory cytokines.
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B Cell Aberrance in Lupus: the Ringleader and the Solution. Clin Rev Allergy Immunol 2021; 62:301-323. [PMID: 33534064 DOI: 10.1007/s12016-020-08820-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2020] [Indexed: 12/18/2022]
Abstract
Systemic lupus erythematosus (SLE) is a prototypical autoimmune disease with high heterogeneity but the common characterization of numerous autoantibodies and systemic inflammation which lead to the damage of multiple organs. Aberrance of B cells plays a pivotal role in the immunopathogenesis of SLE via both antibody-dependent and antibody-independent manners. Escape of autoreactive B cells from the central and peripheral tolerance checkpoints, over-activation of B cells and their excessive cytokines release which drive T cells and dendritic cells stimulation, and dysregulated surface molecules, as well as intracellular signal pathways involved in B cell biology, are all contributing to B cell aberrance and participating in the pathogenesis of SLE. Based on that rationale, targeting aberrance of B cells and relevant molecules and pathways is expected to be a promising strategy for lupus control. Multiple approaches targeting B cells through different mechanisms have been attempted, including B-cell depletion via monoclonal antibodies against B-cell-specific molecules, blockade of B-cell survival and activation factors, suppressing T-B crosstalk by interrupting costimulatory molecules and inhibiting intracellular activation signaling cascade by targeting pathway molecules in B cells. Though most attempts ended in failure, the efficacy of B-cell targeting has been encouraged by the FDA approval of belimumab that blocks B cell-activating factor (BAFF) and the recommended use of anti-CD20 as a remedial therapy in refractory lupus. Still, quantities of clinical trials targeting B cells or relevant molecules are ongoing and some of them have displayed promising preliminary results. Additionally, advances in multi-omics studies help deepen our understandings of B cell biology in lupus and may promote the discovery of novel potential therapeutic targets. The combination of real-world data with basic research achievements may pave the road to conquering lupus.
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Leakage of astrocyte-derived extracellular vesicles in stress-induced exhaustion disorder: a cross-sectional study. Sci Rep 2021; 11:2009. [PMID: 33479350 PMCID: PMC7820323 DOI: 10.1038/s41598-021-81453-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 01/05/2021] [Indexed: 12/13/2022] Open
Abstract
Patients with stress-induced exhaustion disorder (SED) demonstrate cognitive dysfunction similar to patients with minor traumatic brain injury (TBI). We have previously detected elevated concentrations of astrocyte-derived extracellular vesicles (EVs) in patients with TBI. As such, we hypothesized that astrocyte-derived EVs could be higher in patients with SED than in patients with major depressive disorder (MDD) and healthy controls. Patients with SED (n = 31), MDD (n = 31), and healthy matched controls (n = 61) were included. Astrocyte-derived EVs (previously known as microparticles) were measured in plasma with flow cytometry and labeled against glial fibrillary acidic protein (GFAP) and aquaporin 4 (AQP4). In addition, platelet EVs and their CD40 ligand expression were measured. Patients with SED had significantly higher concentrations of AQP4 and GFAP-positive EVs and EVs co-expressing AQP4/GFAP than patients with MDD and healthy controls. Patients with MDD had significantly higher concentrations of GFAP-positive EVs and EVs co-expressing AQP4/GFAP than healthy controls. Platelet EVs did not differ between groups. CD40 ligand expression was significantly higher in patients with SED and MDD than in controls. In conclusion, the present study suggests that patients with SED, and to some extent, patients with MDD, have increased leakage of astrocyte-derived EVs through the blood–brain barrier.
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The Proinflammatory Soluble CD40 Ligand Is Associated with the Systemic Extent of Stable Atherosclerosis. ACTA ACUST UNITED AC 2021; 57:medicina57010039. [PMID: 33406736 PMCID: PMC7824733 DOI: 10.3390/medicina57010039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/26/2020] [Accepted: 12/29/2020] [Indexed: 01/05/2023]
Abstract
Background and objectives: Polyvascular atherosclerosis is frequent and associated with a high cardiovascular risk, although the mechanisms regulating the atherosclerosis extent to single or multiple arterial territories are still poorly understood. Inflammation regulates atherogenesis and soluble CD40 ligand (sCD40L) is an inflammatory mediator associated with the presence of single-territorial atherosclerosis. We assessed whether the sCD40L expression is associated with the atherosclerosis extent to single or multiple arterial territories and with the atherosclerosis severity in different territories. Materials and Methods: We prospectively enrolled 94 participants with no atherosclerosis (controls, n = 26); isolated coronary atherosclerosis (group 1, n = 20); coronary and lower extremity (LE) atherosclerosis (group 2, n = 18); coronary and carotid atherosclerosis (group 3, n = 12); and coronary, LE, and carotid atherosclerosis (group 4, n = 18). Serum sCD40L levels were quantified. Results: The sCD40L levels (ng/mL, mean (standard deviation)) were 4.0 (1.5), 5.6 (2.6), 7.2 (4.2), 5.9 (3.7), and 5.1 (2.4) in controls and groups 1 to 4, respectively (ANOVA p = 0.012). In nonrevascularized patients, the sCD40L levels were significantly higher in group 2 than in group 1 and were correlated with the number of LE diseased segments. Prior LE bypass surgery was associated with lower sCD40L levels. Coexistence of coronary and LE atherosclerosis was independently associated with the sCD40L levels. Conclusions: The sCD40L levels were increased in stable atherosclerosis, particularly in polyvascular coronary and LE atherosclerosis. The number of LE diseased segments and prior LE revascularization were associated with sCD40L expression. To our knowledge, these are novel data, which provide insights into the mechanisms underlying multi-territorial atherosclerosis expression. sCD40L may be a promising noninvasive tool for refining the stratification of the systemic atherosclerotic burden.
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