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Hopp MT, Ugurlar D, Pezeshkpoor B, Biswas A, Ramoji A, Neugebauer U, Oldenburg J, Imhof D. In-depth structure-function profiling of the complex formation between clotting factor VIII and heme. Thromb Res 2024; 237:184-195. [PMID: 38631156 DOI: 10.1016/j.thromres.2024.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 04/04/2024] [Accepted: 04/10/2024] [Indexed: 04/19/2024]
Abstract
BACKGROUND AND AIMS Blood disorders, such as sickle cell disease, and other clinical conditions are often accompanied by intravascular hemolytic events along with the development of severe coagulopathies. Hemolysis, in turn, leads to the accumulation of Fe(II/III)-protoporphyrin IX (heme) in the intravascular compartment, which can trigger a variety of proinflammatory and prothrombotic reactions. As such, heme binding to the blood coagulation proteins factor VIII (FVIII), fibrinogen, and activated protein C with functional consequences has been demonstrated earlier. METHODS We herein present an in-depth characterization of the FVIII-heme interaction at the molecular level and its (patho-)physiological relevance through the application of biochemical, biophysical, structural biology, bioinformatic, and diagnostic tools. RESULTS FVIII has a great heme-binding capacity with seven heme molecules associating with the protein. The respective binding sites were identified by investigating heme binding to FVIII-derived peptides in combination with molecular docking and dynamic simulation studies of the complex as well as cryo-electron microscopy, revealing three high-affinity and four moderate heme-binding motifs (HBMs). Furthermore, the relevance of the FVIII-heme complex formation was characterized in physiologically relevant assay systems, revealing a ~ 50 % inhibition of the FVIII cofactor activity even in the protein-rich environment of blood plasma. CONCLUSION Our study provides not only novel molecular insights into the FVIII-heme interaction and its physiological relevance, but also strongly suggests the reduction of the intrinsic pathway and the accentuation of the final clotting step (by, for example, fibrinogen crosslinking) in hemolytic conditions as well as a future perspective in the context of FVIII substitution therapy of hemorrhagic events in hemophilia A patients.
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Affiliation(s)
- Marie-T Hopp
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, Bonn, Germany; Department of Chemistry, Institute for Integrated Natural Sciences, University of Koblenz, Koblenz, Germany.
| | - Deniz Ugurlar
- Center for Electron Microscopy, Thermo Fisher Scientific, Eindhoven, the Netherlands
| | - Behnaz Pezeshkpoor
- Institute of Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - Arijit Biswas
- Institute of Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - Anuradha Ramoji
- Leibniz Institute of Photonic Technology, Jena, Germany; Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany
| | - Ute Neugebauer
- Leibniz Institute of Photonic Technology, Jena, Germany; Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Jena, Germany; Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Johannes Oldenburg
- Institute of Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
| | - Diana Imhof
- Pharmaceutical Biochemistry and Bioanalytics, Pharmaceutical Institute, University of Bonn, Bonn, Germany.
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Pasciu V, Nieddu M, Sotgiu FD, Baralla E, Berlinguer F. An Overview on Assay Methods to Quantify ROS and Enzymatic Antioxidants in Erythrocytes and Spermatozoa of Small Domestic Ruminants. Animals (Basel) 2023; 13:2300. [PMID: 37508077 PMCID: PMC10376267 DOI: 10.3390/ani13142300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/03/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
The present review aims to provide an overview of the assay methods for the quantification of ROS and principal enzymatic antioxidants as biomarkers of oxidative stress in erythrocytes and spermatozoa of small domestic ruminants. A complete literature search was carried out in PubMed, Scopus and the World Wide Web using relevant keywords and focusing on the last five years (2018-2023). Among spectrophotometry, fluorometry and chemiluminescence, the most widely used method for ROS assay is fluorometry, probably because it allows to simultaneously assay several ROS, using different probes, with greater economic advantages. Regarding intracellular antioxidant enzymes, recent literature reports only spectrophotometric methods, many of which use commercial kits. The use of a less sensitive but cheapest method is suitable because both erythrocytes and spermatozoa samples are highly concentrated in domestic ruminant species. All methods considered in this review have been found to be appropriate; in general, the differences are related to their costs and sensitivity. Quantification of ROS and enzymatic antioxidant activity in erythrocytes and spermatozoa may find application in the study of the welfare and health status of small domestic ruminants for monitoring livestock production.
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Affiliation(s)
- Valeria Pasciu
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy
| | - Maria Nieddu
- Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy
| | | | - Elena Baralla
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy
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Amorim CS, Moraes JA, Magdalena IDJ, López SG, Carneiro ACD, Nunes IKDC, Pizzatti L, Sardela VF, Aquino Neto FR, Mirotti LC, Pereira HMG, Renovato-Martins M. Extracellular Vesicles From Stored Red Blood Cells Convey Heme and Induce Spic Expression on Human Monocytes. Front Immunol 2022; 13:833286. [PMID: 35663938 PMCID: PMC9157768 DOI: 10.3389/fimmu.2022.833286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 04/20/2022] [Indexed: 11/23/2022] Open
Affiliation(s)
- Carolinne Souza Amorim
- Laboratório Brasileiro de Controle de Dopagem-Laboratório de Apoio ao Desenvolvimento Tecnológico (LBCD-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.,Laboratório de Biologia Redox, Programa de Pesquisa em Farmacologia e Inflamação, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - João Alfredo Moraes
- Laboratório de Biologia Redox, Programa de Pesquisa em Farmacologia e Inflamação, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Ingrid de Jesus Magdalena
- Laboratório Brasileiro de Controle de Dopagem-Laboratório de Apoio ao Desenvolvimento Tecnológico (LBCD-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Sheila Gutiérrez López
- Laboratório de Biologia Molecular e Proteômica do Sangue-Laboratório de Apoio ao Desenvolvimento Tecnológico (LABMOPS-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Ana Carolina Dudenhoeffer Carneiro
- Laboratório Brasileiro de Controle de Dopagem-Laboratório de Apoio ao Desenvolvimento Tecnológico (LBCD-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Isabelle Karine da Costa Nunes
- Laboratório Brasileiro de Controle de Dopagem-Laboratório de Apoio ao Desenvolvimento Tecnológico (LBCD-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Luciana Pizzatti
- Laboratório de Biologia Molecular e Proteômica do Sangue-Laboratório de Apoio ao Desenvolvimento Tecnológico (LABMOPS-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Vinícius Figueiredo Sardela
- Laboratório Brasileiro de Controle de Dopagem-Laboratório de Apoio ao Desenvolvimento Tecnológico (LBCD-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Francisco Radler Aquino Neto
- Laboratório Brasileiro de Controle de Dopagem-Laboratório de Apoio ao Desenvolvimento Tecnológico (LBCD-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Luciana Cristina Mirotti
- Laboratório Brasileiro de Controle de Dopagem-Laboratório de Apoio ao Desenvolvimento Tecnológico (LBCD-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Henrique Marcelo Gualberto Pereira
- Laboratório Brasileiro de Controle de Dopagem-Laboratório de Apoio ao Desenvolvimento Tecnológico (LBCD-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Mariana Renovato-Martins
- Laboratório Brasileiro de Controle de Dopagem-Laboratório de Apoio ao Desenvolvimento Tecnológico (LBCD-LADETEC), Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.,Laboratório de Inflamação e Metabolismo, Departamento de Biologia Celular e Molecular, Instituto de Biologia, Universidade Federal Fluminense, Niterói, Brazil
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Meegan JE, Bastarache JA, Ware LB. Toxic effects of cell-free hemoglobin on the microvascular endothelium: implications for pulmonary and nonpulmonary organ dysfunction. Am J Physiol Lung Cell Mol Physiol 2021; 321:L429-L439. [PMID: 34009034 DOI: 10.1152/ajplung.00018.2021] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Levels of circulating cell-free hemoglobin are elevated during hemolytic and inflammatory diseases and contribute to organ dysfunction and severity of illness. Though several studies have investigated the contribution of hemoglobin to tissue injury, the precise signaling mechanisms of hemoglobin-mediated endothelial dysfunction in the lung and other organs are not yet completely understood. The purpose of this review is to highlight the knowledge gained thus far and the need for further investigation regarding hemoglobin-mediated endothelial inflammation and injury to develop novel therapeutic strategies targeting the damaging effects of cell-free hemoglobin.
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Affiliation(s)
- Jamie E Meegan
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Julie A Bastarache
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee.,Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Lorraine B Ware
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
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6
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Haines DD, Tosaki A. Heme Degradation in Pathophysiology of and Countermeasures to Inflammation-Associated Disease. Int J Mol Sci 2020; 21:ijms21249698. [PMID: 33353225 PMCID: PMC7766613 DOI: 10.3390/ijms21249698] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 12/12/2022] Open
Abstract
The class of tetrapyrrol "coordination complexes" called hemes are prosthetic group components of metalloproteins including hemoglobin, which provide functionality to these physiologically essential macromolecules by reversibly binding diatomic gasses, notably O2, which complexes to ferrous (reduced/Fe(II)) iron within the heme porphyrin ring of hemoglobin in a pH- and PCO2-dependent manner-thus allowing their transport and delivery to anatomic sites of their function. Here, pathologies associated with aberrant heme degradation are explored in the context of their underlying mechanisms and emerging medical countermeasures developed using heme oxygenase (HO), its major degradative enzyme and bioactive metabolites produced by HO activity. Tissue deposits of heme accumulate as a result of the removal of senescent or damaged erythrocytes from circulation by splenic macrophages, which destroy the cells and internal proteins, including hemoglobin, leaving free heme to accumulate, posing a significant toxicogenic challenge. In humans, HO uses NADPH as a reducing agent, along with molecular oxygen, to degrade heme into carbon monoxide (CO), free ferrous iron (FeII), which is sequestered by ferritin protein, and biliverdin, subsequently metabolized to bilirubin, a potent inhibitor of oxidative stress-mediated tissue damage. CO acts as a cellular messenger and augments vasodilation. Nevertheless, disease- or trauma-associated oxidative stressors sufficiently intense to overwhelm HO may trigger or exacerbate a wide range of diseases, including cardiovascular and neurologic syndromes. Here, strategies are described for counteracting the effects of aberrant heme degradation, with a particular focus on "bioflavonoids" as HO inducers, shown to cause amelioration of severe inflammatory diseases.
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Affiliation(s)
- Donald David Haines
- Advanced Biotherapeutics, London W2 1EB, UK;
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary
| | - Arpad Tosaki
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, 4032 Debrecen, Hungary
- Correspondence: ; Tel./Fax: +36-52-255586
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Argueta DA, Aich A, Muqolli F, Cherukury H, Sagi V, DiPatrizio NV, Gupta K. Considerations for Cannabis Use to Treat Pain in Sickle Cell Disease. J Clin Med 2020; 9:E3902. [PMID: 33271850 PMCID: PMC7761429 DOI: 10.3390/jcm9123902] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/22/2020] [Accepted: 11/26/2020] [Indexed: 12/18/2022] Open
Abstract
Pain in Sickle Cell Disease (SCD) is a major comorbidity and unique with acute pain due to recurrent and episodic vaso-occlusive crises as well as chronic pain, which can span an individual's entire life. Opioids are the mainstay treatment for pain in SCD. Due to recent health crises raised by adverse effects including deaths from opioid use, pain management in SCD is adversely affected. Cannabis and its products are most widely used for pain in multiple conditions and also by patients with SCD on their own. With the availability of "Medical Cannabis" and approval to use cannabis as medicine across majority of States in the United States as well as over-the-counter preparations, cannabis products are being used increasingly for SCD. The reliability of many of these products remains questionable, which poses a major health risk to the vulnerable individuals seeking pain relief. Therefore, this review provides up to date insights into available categories of cannabis-based treatment strategies, their mechanism of action and pre-clinical and clinical outcomes in SCD. It provides evidence for the benefits and risks of cannabis use in SCD and cautions about the unreliable and unvalidated products that may be adulterated with life-threatening non-cannabis compounds.
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Affiliation(s)
- Donovan A. Argueta
- Hematology/Oncology, Department of Medicine, University of California, Irvine, CA 92868, USA; (D.A.A.); (A.A.); (F.M.); (H.C.)
| | - Anupam Aich
- Hematology/Oncology, Department of Medicine, University of California, Irvine, CA 92868, USA; (D.A.A.); (A.A.); (F.M.); (H.C.)
| | - Fjolla Muqolli
- Hematology/Oncology, Department of Medicine, University of California, Irvine, CA 92868, USA; (D.A.A.); (A.A.); (F.M.); (H.C.)
| | - Hemanth Cherukury
- Hematology/Oncology, Department of Medicine, University of California, Irvine, CA 92868, USA; (D.A.A.); (A.A.); (F.M.); (H.C.)
| | - Varun Sagi
- Department of Hematology, Oncology, and Transplantation, University of Minnesota, Twin Cities, MN 55455, USA;
| | - Nicholas V. DiPatrizio
- Division of Biomedical Sciences, School of Medicine, University of California, Riverside, CA 92521, USA;
| | - Kalpna Gupta
- Hematology/Oncology, Department of Medicine, University of California, Irvine, CA 92868, USA; (D.A.A.); (A.A.); (F.M.); (H.C.)
- Southern California Institute for Research and Education, Long Beach VA Medical Center, Long Beach, CA 90822, USA
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Fejes Z, Erdei J, Pócsi M, Takai J, Jeney V, Nagy A, Varga A, Bácsi A, Bognár L, Novák L, Kappelmayer J, Nagy B. Elevated Pro-Inflammatory Cell-Free MicroRNA Levels in Cerebrospinal Fluid of Premature Infants after Intraventricular Hemorrhage. Int J Mol Sci 2020; 21:ijms21186870. [PMID: 32961661 PMCID: PMC7557369 DOI: 10.3390/ijms21186870] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/16/2020] [Accepted: 09/16/2020] [Indexed: 02/07/2023] Open
Abstract
Intraventricular hemorrhage (IVH) represents a high risk of neonatal mortality and later neurodevelopmental impairment in prematurity. IVH is accompanied with inflammation, hemolysis, and extracellular hemoglobin (Hb) oxidation. However, microRNA (miRNA) expression in cerebrospinal fluid (CSF) of preterm infants with IVH has been unknown. Therefore, in the present study, candidate pro-inflammatory cell-free miRNAs were analyzed in CSF samples from 47 preterm infants with grade III or IV IVH vs. clinical controls (n = 14). miRNAs were quantified by RT-qPCR, normalized to “spike-in” cel-miR-39. Oxidized Hb and total heme levels were determined by spectrophotometry as well as IL-8, VCAM-1, ICAM-1, and E-selectin concentrations by ELISA. To reveal the origin of the investigated miRNAs, controlled hemolysis experiments were performed in vitro; in addition, human choroid plexus epithelial cell (HCPEpiC) cultures were treated with metHb, ferrylHb, heme, or TNF-α to replicate IVH-triggered cellular conditions. Levels of miR-223, miR-155, miR-181b, and miR-126 as well as Hb metabolites along with IL-8 were elevated in CSF after the onset of IVH vs. controls. Significant correlations were observed among the miRNAs, oxidized Hb forms, and the soluble adhesion molecules. During the post-IVH follow-up, attenuated expression of miRNAs and protein biomarkers in CSF was observed upon elimination of Hb metabolites. These miRNAs remained unaffected by a series of artificially induced hemolysis, which excluded red blood cells as their origin, while stimulation of HCPEpiCs with oxidized Hb fractions and heme resulted in increased extracellular miRNA levels in the cell culture supernatant. Overall, the hemorrhage-induced CSF miRNAs reflected inflammatory conditions as potential biomarkers in preterm IVH.
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Affiliation(s)
- Zsolt Fejes
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (Z.F.); (M.P.); (J.T.); (J.K.)
- Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Judit Erdei
- MTA-DE Lendület Vascular Pathophysiology Research Group, Research Centre for Molecular Medicine, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (J.E.); (V.J.)
- Doctoral School of Molecular Cell and Immune Biology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Marianna Pócsi
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (Z.F.); (M.P.); (J.T.); (J.K.)
| | - Jun Takai
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (Z.F.); (M.P.); (J.T.); (J.K.)
| | - Viktória Jeney
- MTA-DE Lendület Vascular Pathophysiology Research Group, Research Centre for Molecular Medicine, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (J.E.); (V.J.)
- Doctoral School of Molecular Cell and Immune Biology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Andrea Nagy
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary;
| | - Alíz Varga
- Department of Immunology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (A.V.); (A.B.)
| | - Attila Bácsi
- Department of Immunology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (A.V.); (A.B.)
| | - László Bognár
- Department of Neurosurgery, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (L.B.); (L.N.)
| | - László Novák
- Department of Neurosurgery, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (L.B.); (L.N.)
| | - János Kappelmayer
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (Z.F.); (M.P.); (J.T.); (J.K.)
- Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
| | - Béla Nagy
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (Z.F.); (M.P.); (J.T.); (J.K.)
- Kálmán Laki Doctoral School of Biomedical and Clinical Sciences, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary
- Correspondence: ; Tel.: +36-52-340-006
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Poillerat V, Gentinetta T, Leon J, Wassmer A, Edler M, Torset C, Luo D, Tuffin G, Roumenina LT. Hemopexin as an Inhibitor of Hemolysis-Induced Complement Activation. Front Immunol 2020; 11:1684. [PMID: 32849588 PMCID: PMC7412979 DOI: 10.3389/fimmu.2020.01684] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 06/24/2020] [Indexed: 12/23/2022] Open
Abstract
Hemopexin is the main plasmatic scavenger of cell-free heme, released in the context of intravascular hemolysis or major cell injury. Heme is indispensable for the oxygen transport by hemoglobin but when released outside of the erythrocytes it becomes a danger-associated molecular pattern, contributing to tissue injury. One of the mechanisms of pro-inflammatory action of heme is to activate the innate immune complement cascade. Therefore, we hypothesized that injection of hemopexin will prevent hemolysis-induced complement activation. Human plasma-derived hemopexin is compatible with the heme clearance machinery of the mice. 100 or 500 mg/kg of hemopexin was injected in C57Bl/6 mice before treatment with phenylhydrazine (inducer of erythrocytes lysis) or with PBS as a control. Blood was taken at different timepoints to determine the pharmacokinetic of injected hemopexin in presence and absence of hemolysis. Complement activation was determined in plasma, by the C3 cleavage (western blot) and in the kidneys (immunofluorescence). Kidney injury was evaluated by urea and creatinine in plasma and renal NGAL and HO-1 gene expression were measured. The pharmacokinetic properties of hemopexin (mass spectrometry) in the hemolytic mice were affected by the target-mediated drug disposition phenomenon due to the high affinity of binding of hemopexin to heme. Hemolysis induced complement overactivation and signs of mild renal dysfunction at 6 h, which were prevented by hemopexin, except for the NGAL upregulation. The heme-degrading capacity of the kidney, measured by the HO-1 expression, was not affected by the treatment. These results encourage further studies of hemopexin as a therapeutic agent in models of diseases with heme overload.
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Affiliation(s)
- Victoria Poillerat
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | | | - Juliette Leon
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | | | | | - Carine Torset
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Dandan Luo
- CSL Behring, King of Prussia, PA, United States
| | | | - Lubka T Roumenina
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
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Bozza MT, Jeney V. Pro-inflammatory Actions of Heme and Other Hemoglobin-Derived DAMPs. Front Immunol 2020; 11:1323. [PMID: 32695110 PMCID: PMC7339442 DOI: 10.3389/fimmu.2020.01323] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 05/26/2020] [Indexed: 12/11/2022] Open
Abstract
Damage associated molecular patterns (DAMPs) are endogenous molecules originate from damaged cells and tissues with the ability to trigger and/or modify innate immune responses. Upon hemolysis hemoglobin (Hb) is released from red blood cells (RBCs) to the circulation and give a rise to the production of different Hb redox states and heme which can act as DAMPs. Heme is the best characterized Hb-derived DAMP that targets different immune and non-immune cells. Heme is a chemoattractant, activates the complement system, modulates host defense mechanisms through the activation of innate immune receptors and the heme oxygenase-1/ferritin system, and induces innate immune memory. The contribution of oxidized Hb forms is much less studied, but some evidence show that these species might play distinct roles in intravascular hemolysis-associated pathologies independently of heme release. This review aims to summarize our current knowledge about the formation and pro-inflammatory actions of heme and other Hb-derived DAMPs.
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Affiliation(s)
- Marcelo T Bozza
- Laboratório de Inflamação e Imunidade, Departamento de Imunologia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Viktória Jeney
- MTA-DE Lendület Vascular Pathophysiology Research Group, Research Centre for Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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