1
|
Astrelina TA, Brunchukov VA, Kodina GE, Bubenshchikov VB, Larenkov AA, Lunev AS, Petrosova KA, Rastorgueva AA, Kobzeva IV, Usupzhanova DY, Nikitina VA, Malsagova KA, Kulikova LI, Samoilov AS, Pustovoyt VI. Biodistribution of Mesenchymal Stromal Cells Labeled with [ 89Zr]Zr-Oxine in Local Radiation Injuries in Laboratory Animals. Molecules 2023; 28:7169. [PMID: 37894647 PMCID: PMC10609482 DOI: 10.3390/molecules28207169] [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: 08/14/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND Tracking the migration pathways of living cells after their introduction into a patient's body is a topical issue in the field of cell therapy. Questions related to studying the possibility of long-term intravital biodistribution of mesenchymal stromal cells in the body currently remain open. METHODS Forty-nine laboratory animals were used in the study. Modeling of local radiation injuries was carried out, and the dynamics of the distribution of mesenchymal stromal cells labeled with [89Zr]Zr-oxine in the rat body were studied. RESULTS the obtained results of the labelled cell distribution allow us to assume that this procedure could be useful for visualization of local radiation injury using positron emission tomography. However, further research is needed to confirm this assumption. CONCLUSIONS intravenous injection leads to the initial accumulation of cells in the lungs and their subsequent redistribution to the liver, spleen, and kidneys. When locally injected into tissues, mesenchymal stromal cells are not distributed systemically in significant quantities.
Collapse
Affiliation(s)
- Tatiana A. Astrelina
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Vitaliy A. Brunchukov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Galina E. Kodina
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Viktor B. Bubenshchikov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Anton A. Larenkov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Aleksandr S. Lunev
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Kristina A. Petrosova
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Anna A. Rastorgueva
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Irina V. Kobzeva
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Daria Y. Usupzhanova
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Victoria A. Nikitina
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | | | - Ludmila I. Kulikova
- Institute of Biomedical Chemistry, Biobanking Group, 119121 Moscow, Russia;
- Institute of Mathematical Problems of Biology RAS—The Branch of Keldysh Institute of Applied Mathematics of Russian Academy of Sciences, 142290 Pushchino, Russia
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 119991 Pushchino, Russia
| | - Alexander S. Samoilov
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| | - Vasiliy I. Pustovoyt
- State Research Center—Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, 123182 Moscow, Russia; (T.A.A.); (V.A.B.); (G.E.K.); (V.B.B.); (A.A.L.); (A.S.L.); (K.A.P.); (A.A.R.); (I.V.K.); (D.Y.U.); (V.A.N.); (A.S.S.); (V.I.P.)
| |
Collapse
|
2
|
Pruller J, Pham TT, Blower JE, Charoenphun P, Volpe A, Sunassee K, Mullen GED, Blower PJ, Smith RAG, Ma MT. An indium-111-labelled membrane-targeted peptide for cell tracking with radionuclide imaging. RSC Chem Biol 2023; 4:65-73. [PMID: 36685254 PMCID: PMC9811519 DOI: 10.1039/d2cb00164k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 10/04/2022] [Indexed: 11/07/2022] Open
Abstract
Cell labelling agents that enable longitudinal in vivo tracking of administered cells will support the clinical development of cell-based therapies. Radionuclide imaging with gamma and positron-emitting radioisotopes can provide quantitative and longitudinal mapping of cells in vivo. To make this widely accessible and adaptable to a range of cell types, new, versatile and simple methods for directly radiolabelling cells are required. We have developed [111In]In-DTPA-CTP, the first example of a radiolabelled peptide that binds to the extracellular membrane of cells, for tracking cell distribution in vivo using Single Photon Emission Computed Tomography (SPECT). [111In]In-DTPA-CTP consists of (i) myristoyl groups for insertion into the phospholipid bilayer, (ii) positively charged lysine residues for electrostatic association with negatively charged phospholipid groups at the cell surface and (iii) a diethylenetriamine pentaacetate derivative that coordinates the γ-emitting radiometal, [111In]In3+. [111In]In-DTPA-CTP binds to 5T33 murine myeloma cells, enabling qualitative SPECT tracking of myeloma cells' accumulation in lungs immediately after intravenous administration. This is the first report of a radiolabelled cell-membrane binding peptide for use in cell tracking.
Collapse
Affiliation(s)
- Johanna Pruller
- Randall Division of Cell and Molecular Biophysics, King's College London UK
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital London UK
| | - Truc Thuy Pham
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital London UK
| | - Julia E Blower
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital London UK
| | - Putthiporn Charoenphun
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital London UK
- Department of Diagnostic and Therapeutic Radiology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University Bangkok Thailand
| | - Alessia Volpe
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital London UK
| | - Kavitha Sunassee
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital London UK
| | - Gregory E D Mullen
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital London UK
| | - Philip J Blower
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital London UK
| | - Richard A G Smith
- MRC Centre for Transplantation, King's College London, Guy's Hospital London UK
| | - Michelle T Ma
- School of Biomedical Engineering and Imaging Sciences, King's College London, St Thomas' Hospital London UK
| |
Collapse
|
3
|
Friberger I, Gontu V, Harris RA, Tran TA, Lundberg J, Holmin S. Phenotyping of Macrophages After Radiolabeling and Safety of Intra-arterial Transplantation Assessed by SPECT/CT and MRI. Cell Transplant 2023; 32:9636897231212780. [PMID: 38009543 PMCID: PMC10683405 DOI: 10.1177/09636897231212780] [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: 02/20/2023] [Revised: 10/04/2023] [Accepted: 10/23/2023] [Indexed: 11/29/2023] Open
Abstract
Cell therapy is an integral modality of regenerative medicine. Macrophages are known for their sensitivity to activation stimuli and capability to recruit other immune cells to the sites of injury and healing. In addition, the route of administration can impact engraftment and efficacy of cell therapy, and modern neuro-interventional techniques provide the possibility for selective intra-arterial (IA) delivery to the central nervous system (CNS) with very low risk. The effects of radiolabelling and catheter transport on differentially activated macrophages were evaluated. Furthermore, the safety of selective IA administration of these macrophages to the rabbit brain was assessed by single-photon emission computed tomography/computed tomography (SPECT/CT) and ultra-high-field (9.4 T) magnetic resonance imaging (MRI). Cells were successfully labeled with (111In)In-(oxinate)3 and passed through a microcatheter with preserved phenotype. No cells were retained in the healthy rabbit brain after IA administration, and no adverse events could be observed either 1 h (n = 6) or 24 h (n = 2) after cell administration. The procedure affected both lipopolysaccharide/gamma interferon (LPS/IFNγ) activated cells and interleukin 4 (IL4), interleukin 10 (IL10)/transforming growth factor beta 1 (TGFβ1) activated cells to some degree. The LPS/IFNγ activated cells had a significant increase in their phagocytotic function. Overall, the major impact on the cell phenotypes was due to the radiolabeling and not passage through the catheter. Unstimulated cells were substantially affected by both radiolabeling and catheter administration and are hence not suited for this procedure, while both activated macrophages retained their initial phenotypes. In conclusion, activated macrophages are suitable candidates for targeted IA administration without adverse effects on normal, healthy brain parenchyma.
Collapse
Affiliation(s)
- Ida Friberger
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Vamsi Gontu
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden
| | - Robert A Harris
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Centre for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Thuy A Tran
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Radiopharmacy, Karolinska University Hospital, Stockholm, Sweden
| | - Johan Lundberg
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden
| | - Staffan Holmin
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden
| |
Collapse
|
4
|
Gawne PJ, Man F, Blower PJ, T M de Rosales R. Direct Cell Radiolabeling for in Vivo Cell Tracking with PET and SPECT Imaging. Chem Rev 2022; 122:10266-10318. [PMID: 35549242 PMCID: PMC9185691 DOI: 10.1021/acs.chemrev.1c00767] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The arrival of cell-based therapies is a revolution in medicine. However, its safe clinical application in a rational manner depends on reliable, clinically applicable methods for determining the fate and trafficking of therapeutic cells in vivo using medical imaging techniques─known as in vivo cell tracking. Radionuclide imaging using single photon emission computed tomography (SPECT) or positron emission tomography (PET) has several advantages over other imaging modalities for cell tracking because of its high sensitivity (requiring low amounts of probe per cell for imaging) and whole-body quantitative imaging capability using clinically available scanners. For cell tracking with radionuclides, ex vivo direct cell radiolabeling, that is, radiolabeling cells before their administration, is the simplest and most robust method, allowing labeling of any cell type without the need for genetic modification. This Review covers the development and application of direct cell radiolabeling probes utilizing a variety of chemical approaches: organic and inorganic/coordination (radio)chemistry, nanomaterials, and biochemistry. We describe the key early developments and the most recent advances in the field, identifying advantages and disadvantages of the different approaches and informing future development and choice of methods for clinical and preclinical application.
Collapse
Affiliation(s)
- Peter J Gawne
- School of Biomedical Engineering & Imaging Sciences, King's College London, St Thomas' Hospital, London, SE1 7EH, U.K
| | - Francis Man
- School of Biomedical Engineering & Imaging Sciences, King's College London, St Thomas' Hospital, London, SE1 7EH, U.K.,Institute of Pharmaceutical Science, School of Cancer and Pharmaceutical Sciences, King's College London, London, SE1 9NH, U.K
| | - Philip J Blower
- School of Biomedical Engineering & Imaging Sciences, King's College London, St Thomas' Hospital, London, SE1 7EH, U.K
| | - Rafael T M de Rosales
- School of Biomedical Engineering & Imaging Sciences, King's College London, St Thomas' Hospital, London, SE1 7EH, U.K
| |
Collapse
|
5
|
Friberger I, Jussing E, Han J, Goos JACM, Siikanen J, Kaipe H, Lambert M, Harris RA, Samén E, Carlsten M, Holmin S, Tran TA. Optimisation of the Synthesis and Cell Labelling Conditions for [ 89Zr]Zr-oxine and [ 89Zr]Zr-DFO-NCS: a Direct In Vitro Comparison in Cell Types with Distinct Therapeutic Applications. Mol Imaging Biol 2021; 23:952-962. [PMID: 34231103 PMCID: PMC8578071 DOI: 10.1007/s11307-021-01622-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/29/2021] [Accepted: 06/03/2021] [Indexed: 11/13/2022]
Abstract
BACKGROUND There is a need to better characterise cell-based therapies in preclinical models to help facilitate their translation to humans. Long-term high-resolution tracking of the cells in vivo is often impossible due to unreliable methods. Radiolabelling of cells has the advantage of being able to reveal cellular kinetics in vivo over time. This study aimed to optimise the synthesis of the radiotracers [89Zr]Zr-oxine (8-hydroxyquinoline) and [89Zr]Zr-DFO-NCS (p-SCN-Bn-Deferoxamine) and to perform a direct comparison of the cell labelling efficiency using these radiotracers. PROCEDURES Several parameters, such as buffers, pH, labelling time and temperature, were investigated to optimise the synthesis of [89Zr]Zr-oxine and [89Zr]Zr-DFO-NCS in order to reach a radiochemical conversion (RCC) of >95 % without purification. Radio-instant thin-layer chromatography (iTLC) and radio high-performance liquid chromatography (radio-HPLC) were used to determine the RCC. Cells were labelled with [89Zr]Zr-oxine or [89Zr]Zr-DFO-NCS. The cellular retention of 89Zr and the labelling impact was determined by analysing the cellular functions, such as viability, proliferation, phagocytotic ability and phenotypic immunostaining. RESULTS The optimised synthesis of [89Zr]Zr-oxine and [89Zr]Zr-DFO-NCS resulted in straightforward protocols not requiring additional purification. [89Zr]Zr-oxine and [89Zr]Zr-DFO-NCS were synthesised with an average RCC of 98.4 % (n = 16) and 98.0 % (n = 13), respectively. Cell labelling efficiencies were 63.9 % (n = 35) and 70.2 % (n = 30), respectively. 89Zr labelling neither significantly affected the cell viability (cell viability loss was in the range of 1-8 % compared to its corresponding non-labelled cells, P value > 0.05) nor the cells' proliferation rate. The phenotype of human decidual stromal cells (hDSC) and phagocytic function of rat bone-marrow-derived macrophages (rMac) was somewhat affected by radiolabelling. CONCLUSIONS Our study demonstrates that [89Zr]Zr-oxine and [89Zr]Zr-DFO-NCS are equally effective in cell labelling. However, [89Zr]Zr-oxine was superior to [89Zr]Zr-DFO-NCS with regard to long-term stability, cellular retention, minimal variation between cell types and cell labelling efficiency.
Collapse
Affiliation(s)
- Ida Friberger
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Emma Jussing
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Radiopharmacy, Karolinska University Hospital, Stockholm, Sweden
| | - Jinming Han
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Centre for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Jeroen A C M Goos
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Radiopharmacy, Karolinska University Hospital, Stockholm, Sweden
| | - Jonathan Siikanen
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Medical Radiation Physics and Nuclear Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Helen Kaipe
- Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Mélanie Lambert
- Department of Medicine in Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Robert A Harris
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Centre for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Erik Samén
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
- Department of Radiopharmacy, Karolinska University Hospital, Stockholm, Sweden
| | - Mattias Carlsten
- Department of Medicine in Huddinge, Karolinska Institutet, Stockholm, Sweden
- Center for Cell Therapy and Allogeneic Stem Cell Transplantation (CAST), Karolinska University Hospital, Stockholm, Sweden
| | - Staffan Holmin
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden
| | - Thuy A Tran
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden.
- Department of Radiopharmacy, Karolinska University Hospital, Stockholm, Sweden.
| |
Collapse
|
6
|
Kiraga Ł, Kucharzewska P, Paisey S, Cheda Ł, Domańska A, Rogulski Z, Rygiel TP, Boffi A, Król M. Nuclear imaging for immune cell tracking in vivo – Comparison of various cell labeling methods and their application. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
7
|
Helfer BM, Ponomarev V, Patrick PS, Blower PJ, Feitel A, Fruhwirth GO, Jackman S, Pereira Mouriès L, Park MVDZ, Srinivas M, Stuckey DJ, Thu MS, van den Hoorn T, Herberts CA, Shingleton WD. Options for imaging cellular therapeutics in vivo: a multi-stakeholder perspective. Cytotherapy 2021; 23:757-773. [PMID: 33832818 PMCID: PMC9344904 DOI: 10.1016/j.jcyt.2021.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 02/01/2021] [Accepted: 02/13/2021] [Indexed: 12/13/2022]
Abstract
Cell-based therapies have been making great advances toward clinical reality. Despite the increase in trial activity, few therapies have successfully navigated late-phase clinical trials and received market authorization. One possible explanation for this is that additional tools and technologies to enable their development have only recently become available. To support the safety evaluation of cell therapies, the Health and Environmental Sciences Institute Cell Therapy-Tracking, Circulation and Safety Committee, a multisector collaborative committee, polled the attendees of the 2017 International Society for Cell & Gene Therapy conference in London, UK, to understand the gaps and needs that cell therapy developers have encountered regarding safety evaluations in vivo. The goal of the survey was to collect information to inform stakeholders of areas of interest that can help ensure the safe use of cellular therapeutics in the clinic. This review is a response to the cellular imaging interests of those respondents. The authors offer a brief overview of available technologies and then highlight the areas of interest from the survey by describing how imaging technologies can meet those needs. The areas of interest include imaging of cells over time, sensitivity of imaging modalities, ability to quantify cells, imaging cellular survival and differentiation and safety concerns around adding imaging agents to cellular therapy protocols. The Health and Environmental Sciences Institute Cell Therapy-Tracking, Circulation and Safety Committee believes that the ability to understand therapeutic cell fate is vital for determining and understanding cell therapy efficacy and safety and offers this review to aid in those needs. An aim of this article is to share the available imaging technologies with the cell therapy community to demonstrate how these technologies can accomplish unmet needs throughout the translational process and strengthen the understanding of cellular therapeutics.
Collapse
Affiliation(s)
| | - Vladimir Ponomarev
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - P Stephen Patrick
- Department of Medicine, Centre for Advanced Biomedical Imaging, University College London, London, UK
| | - Philip J Blower
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Alexandra Feitel
- Formerly, Health and Environmental Sciences Institute, US Environmental Protection Agency, Washington, DC, USA
| | - Gilbert O Fruhwirth
- School of Biomedical Engineering and Imaging Sciences, King's College London, London, UK
| | - Shawna Jackman
- Charles River Laboratories, Shrewsbury, Massachusetts, USA
| | | | - Margriet V D Z Park
- Centre for Health Protection, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Mangala Srinivas
- Department of Tumor Immunology, Radboud University Medical Center, Nijmegen, the Netherlands; Cenya Imaging BV, Amsterdam, the Netherlands
| | - Daniel J Stuckey
- Department of Medicine, Centre for Advanced Biomedical Imaging, University College London, London, UK
| | - Mya S Thu
- Visicell Medical Inc, La Jolla, California, USA
| | | | | | | |
Collapse
|
8
|
Differential effects of short- and long-term treatment with mepolizumab on eosinophil kinetics in blood and sputum in eosinophilic asthma. iScience 2021; 24:102913. [PMID: 34409272 PMCID: PMC8361259 DOI: 10.1016/j.isci.2021.102913] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/28/2021] [Accepted: 07/22/2021] [Indexed: 01/21/2023] Open
Abstract
Mepolizumab (anti-IL-5) is a successful biological for treatment of T2/eosinophilic asthma by blocking the IL-5-eosinophil axis. The kinetics of human eosinophils in blood and sputum was determined to better understand the underlying mechanism(s). Pulse-chase labeling was performed with 6,6-2H2-glucose in patients with asthma after short term (4 days) and long term (84 days) treatment with mepolizumab (n = 10) or placebo (n = 10). The retention time of eosinophils in sputum was longer than in blood. Treatment with mepolizumab induced a fast and long-lasting eosinopenia with no reduction of eosinophil progenitors. The retention time of eosinophils in blood was delayed only after short-term treatment. This leads to the hypothesis that IL-5 increases the number of IL-5-responsive progenitors and potentiates homing to the tissues, leading to reactive eosinophilia. Long-term treatment is associated with low numbers of IL-5-independent eosinophils in blood and tissues. Therefore, long-term treatment with mepolizumab restores the kinetics of eosinophils as normally found in homeostasis. Anti-IL-5 (mepolizumab) treatment leads to inhibition of reactive eosinophilia Reactive blood eosinophils have a high retention time in the absence of IL-5 Eosinophils are long lived in the sputum of eosinophil asthmatics Anti-IL-5 reduces proliferating progenitors rather than inhibiting differentiation
Collapse
|
9
|
Glucocorticoid-induced eosinopenia results from CXCR4-dependent bone marrow migration. Blood 2021; 136:2667-2678. [PMID: 32659786 DOI: 10.1182/blood.2020005161] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/26/2020] [Indexed: 12/27/2022] Open
Abstract
Glucocorticoids are considered first-line therapy in a variety of eosinophilic disorders. They lead to a transient, profound decrease in circulating human eosinophils within hours of administration. The phenomenon of glucocorticoid-induced eosinopenia has been the basis for the use of glucocorticoids in eosinophilic disorders, and it has intrigued clinicians for 7 decades, yet its mechanism remains unexplained. To investigate, we first studied the response of circulating eosinophils to in vivo glucocorticoid administration in 3 species and found that the response in rhesus macaques, but not in mice, closely resembled that in humans. We then developed an isolation technique to purify rhesus macaque eosinophils from peripheral blood and performed live tracking of zirconium-89-oxine-labeled eosinophils by serial positron emission tomography/computed tomography imaging, before and after administration of glucocorticoids. Glucocorticoids induced rapid bone marrow homing of eosinophils. The kinetics of glucocorticoid-induced eosinopenia and bone marrow migration were consistent with those of the induction of the glucocorticoid-responsive chemokine receptor CXCR4, and selective blockade of CXCR4 reduced or eliminated the early glucocorticoid-induced reduction in blood eosinophils. Our results indicate that glucocorticoid-induced eosinopenia results from CXCR4-dependent migration of eosinophils to the bone marrow. These findings provide insight into the mechanism of action of glucocorticoids in eosinophilic disorders, with implications for the study of glucocorticoid resistance and the development of more targeted therapies. The human study was registered at ClinicalTrials.gov as #NCT02798523.
Collapse
|
10
|
Volpe A, Pillarsetty NVK, Lewis JS, Ponomarev V. Applications of nuclear-based imaging in gene and cell therapy: probe considerations. MOLECULAR THERAPY-ONCOLYTICS 2021; 20:447-458. [PMID: 33718593 PMCID: PMC7907215 DOI: 10.1016/j.omto.2021.01.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/26/2021] [Indexed: 01/11/2023]
Abstract
Several types of gene- and cell-based therapeutics are now emerging in the cancer immunotherapy, transplantation, and regenerative medicine landscapes. Radionuclear-based imaging can be used as a molecular imaging tool for repetitive and non-invasive visualization as well as in vivo monitoring of therapy success. In this review, we discuss the principles of nuclear-based imaging and provide a comprehensive overview of its application in gene and cell therapy. This review aims to inform investigators in the biomedical field as well as clinicians on the state of the art of nuclear imaging, from probe design to available radiopharmaceuticals and advances of direct (probe-based) and indirect (transgene-based) strategies in both preclinical and clinical settings. Notably, as the nuclear-based imaging toolbox is continuously expanding, it will be increasingly incorporated into the clinical setting where the distribution, targeting, and persistence of a new generation of therapeutics can be imaged and ultimately guide therapeutic decisions.
Collapse
Affiliation(s)
- Alessia Volpe
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Naga Vara Kishore Pillarsetty
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Weill Cornell Medical College, New York, NY, USA
| | - Jason S Lewis
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Weill Cornell Medical College, New York, NY, USA
| | - Vladimir Ponomarev
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Weill Cornell Medical College, New York, NY, USA
| |
Collapse
|
11
|
Sier VQ, de Vries MR, van der Vorst JR, Vahrmeijer AL, van Kooten C, Cruz LJ, de Geus-Oei LF, Ferreira V, Sier CFM, Alves F, Muthana M. Cell-Based Tracers as Trojan Horses for Image-Guided Surgery. Int J Mol Sci 2021; 22:E755. [PMID: 33451116 PMCID: PMC7828607 DOI: 10.3390/ijms22020755] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 12/14/2022] Open
Abstract
Surgeons rely almost completely on their own vision and palpation to recognize affected tissues during surgery. Consequently, they are often unable to distinguish between different cells and tissue types. This makes accurate and complete resection cumbersome. Targeted image-guided surgery (IGS) provides a solution by enabling real-time tissue recognition. Most current targeting agents (tracers) consist of antibodies or peptides equipped with a radiolabel for Positron Emission Tomography (PET) and Single Photon Emission Computed Tomography (SPECT), magnetic resonance imaging (MRI) labels, or a near-infrared fluorescent (NIRF) dye. These tracers are preoperatively administered to patients, home in on targeted cells or tissues, and are visualized in the operating room via dedicated imaging systems. Instead of using these 'passive' tracers, there are other, more 'active' approaches of probe delivery conceivable by using living cells (macrophages/monocytes, neutrophils, T cells, mesenchymal stromal cells), cell(-derived) fragments (platelets, extracellular vesicles (exosomes)), and microorganisms (bacteria, viruses) or, alternatively, 'humanized' nanoparticles. Compared with current tracers, these active contrast agents might be more efficient for the specific targeting of tumors or other pathological tissues (e.g., atherosclerotic plaques). This review provides an overview of the arsenal of possibilities applicable for the concept of cell-based tracers for IGS.
Collapse
Affiliation(s)
- Vincent Q. Sier
- Department of Surgery, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (V.Q.S.); (M.R.d.V.); (J.R.v.d.V.); (A.L.V.)
| | - Margreet R. de Vries
- Department of Surgery, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (V.Q.S.); (M.R.d.V.); (J.R.v.d.V.); (A.L.V.)
| | - Joost R. van der Vorst
- Department of Surgery, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (V.Q.S.); (M.R.d.V.); (J.R.v.d.V.); (A.L.V.)
| | - Alexander L. Vahrmeijer
- Department of Surgery, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (V.Q.S.); (M.R.d.V.); (J.R.v.d.V.); (A.L.V.)
| | - Cornelis van Kooten
- Department of Nephrology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands;
| | - Luis J. Cruz
- Department of Radiology, Translational Nanomaterials and Imaging Group, Leiden University Medical Center, 2300 RC Leiden, The Netherlands;
| | - Lioe-Fee de Geus-Oei
- Department of Radiology, Section of Nuclear Medicine, Leiden University Medical Center, 2300 RC Leiden, The Netherlands;
- Biomedical Photonic Imaging Group, University of Twente, 7522 NB Enschede, The Netherlands
| | - Valerie Ferreira
- Department of Research and Development, UniQure, 1100 DA Amsterdam, The Netherlands;
| | - Cornelis F. M. Sier
- Department of Surgery, Leiden University Medical Center, 2300 RC Leiden, The Netherlands; (V.Q.S.); (M.R.d.V.); (J.R.v.d.V.); (A.L.V.)
- Percuros B.V. Leiden, 2333 CL Leiden, The Netherlands
| | - Frauke Alves
- Translational Molecular Imaging, Clinic of Hematology and Medical Oncology, Institute of Diagnostic and Interventional Radiology, University Medicine Center Göttingen and Max-Planck-Institute for Experimental Medicine, 37075 Göttingen, Germany;
| | - Munitta Muthana
- Department of Infection and Immunity, University of Sheffield, Sheffield S10 2RX, UK;
| |
Collapse
|
12
|
Man F, Khan AA, Carrascal-Miniño A, Blower PJ, T M de Rosales R. A kit formulation for the preparation of [ 89Zr]Zr(oxinate) 4 for PET cell tracking: White blood cell labelling and comparison with [ 111In]In(oxinate) 3. Nucl Med Biol 2020; 90-91:31-40. [PMID: 32979725 PMCID: PMC7116765 DOI: 10.1016/j.nucmedbio.2020.09.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/08/2020] [Accepted: 09/14/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Advances in immunology and cell-based therapies are creating a need to track individual cell types, such as immune cells (neutrophils, eosinophils, chimeric antigen receptor (CAR) T cells, etc.) and stem cells. As the fate of administered cells remains largely unknown, nuclear imaging could determine the migration and survival of cells in patients. [89Zr]Zr(oxinate)4, or [89Zr]Zr-oxine, is a radiotracer for positron emission tomography (PET) that has been evaluated in preclinical models of cell tracking and could improve on [111In]In-oxine, the current gold standard radiotracer for cell tracking by scintigraphy and single-photon emission computed tomography (SPECT), because of the better sensitivity, spatial resolution and quantification of PET. However, a clinically usable formulation of [89Zr]Zr-oxine is lacking. This study demonstrates a 1-step procedure for preparing [89Zr]Zr-oxine and evaluates it against [111In]In-oxine in white blood cell (WBC) labelling. METHODS Commercial [89Zr]Zr-oxalate was added to a formulation containing oxine, a buffering agent, a base and a surfactant or organic solvent. WBC isolated from 10 human volunteers were radiolabelled with [89Zr]Zr-oxine following a clinical radiolabelling protocol. Labelling efficiency, cell viability, chemotaxis and DNA damage were evaluated in vitro, in an intra-individual comparison against [111In]In-oxine. RESULTS An optimised formulation of [89Zr]Zr-oxine containing oxine, polysorbate 80 and 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) was developed. This enabled 1-step radiolabelling of oxine with commercial [89Zr]Zr-oxalate (0.1-25 MBq) in 5 min and radiotracer stability for 1 week. WBC labelling efficiency was 48.7 ± 6.3%, compared to 89.1 ± 9.5% (P < 0.0001, n = 10) for [111In]In-oxine. Intracellular retention of 89Zr and cell viability after radiolabelling were comparable to 111In. There were no significant differences in leukocyte chemotaxis or DNA damage between [89Zr]Zr-oxine or [111In]In-oxine. CONCLUSIONS, ADVANCES IN KNOWLEDGE AND IMPLICATIONS FOR PATIENT CARE: Our results demonstrate that [89Zr]Zr-oxine is a suitable PET alternative to [111In]In-oxine for WBC imaging. Our formulation allows rapid, stable, high-yield, single-step preparation of [89Zr]Zr-oxine from commercially available 89Zr. This will facilitate the clinical translation of cell tracking using [89Zr]Zr-oxine.
Collapse
Affiliation(s)
- Francis Man
- School of Biomedical Engineering & Imaging Sciences, King's College London, London SE1 7EH, UK.
| | - Azalea A Khan
- School of Biomedical Engineering & Imaging Sciences, King's College London, London SE1 7EH, UK
| | - Amaia Carrascal-Miniño
- School of Biomedical Engineering & Imaging Sciences, King's College London, London SE1 7EH, UK
| | - Philip J Blower
- School of Biomedical Engineering & Imaging Sciences, King's College London, London SE1 7EH, UK
| | - Rafael T M de Rosales
- School of Biomedical Engineering & Imaging Sciences, King's College London, London SE1 7EH, UK.
| |
Collapse
|
13
|
Granton E, Kim JH, Podstawka J, Yipp BG. The Lung Microvasculature Is a Functional Immune Niche. Trends Immunol 2018; 39:890-899. [PMID: 30253910 DOI: 10.1016/j.it.2018.09.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/28/2018] [Accepted: 09/04/2018] [Indexed: 01/15/2023]
Abstract
Lung capillaries, best known for vital gas exchange, also contribute to neutrophil margination, a phenomenon resulting in large numbers of pulmonary vascular neutrophils. Importantly, the functional relevance of neutrophil margination is unknown. Recent advances in microscopy have altered our understanding of why neutrophils marginate. Specifically, data show that lung capillaries provide a unique anatomical site for neutrophils to capture bloodstream pathogens, which contrasts the conventional monophagocytic-dominated vascular host defense of the spleen and liver. Moreover, lung capillaries provide an efficient site for direct cell-cell communication required for the induction of apoptosis in aged neutrophils. These new ideas transform our views of the pulmonary circulation as a site for immediate neutrophil-mediated host defense and regulation of their life cycle.
Collapse
Affiliation(s)
- Elise Granton
- Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Co-first authors, equal contribution
| | - Jung Hwan Kim
- Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Current address: Systems Genomics and Bioinformatics Unit, Laboratory of Immune Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; Co-first authors, equal contribution
| | - John Podstawka
- Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Co-first authors, equal contribution
| | - Bryan G Yipp
- Calvin, Phoebe and Joan Snyder Institute for Chronic Diseases, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Critical Care Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
| |
Collapse
|
14
|
Farahi N, Loutsios C, Tregay N, Summers C, Lok LSC, Ruparelia P, Solanki CK, Gillett D, Chilvers ER, Peters AM. Radiolabelled leucocytes in human pulmonary disease. Br Med Bull 2018; 127:69-82. [PMID: 30052802 PMCID: PMC6312042 DOI: 10.1093/bmb/ldy022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 07/20/2018] [Indexed: 01/13/2023]
Abstract
INTRODUCTION Radionuclides for leucocyte kinetic studies have progressed from non-gamma emitting cell-labelling radionuclides through gamma emitting nuclides that allow imaging of leucocyte kinetics, to the next goal of positron emission tomography (PET). SOURCES OF DATA Mostly the authors' own studies, following on from studies of the early pioneers. AREAS OF CONTROVERSY From early imaging studies, it appeared that the majority of the marginated granulocyte pool was located in the lungs. However, later work disputed this by demonstrating the exquisite sensitivity of granulocytes to ex vivo isolation and labelling, and that excessive lung activity is artefactual. AREAS OF AGREEMENT Following refinement of labelling techniques, it was shown that the majority of marginated granulocytes are located in the spleen and bone marrow. The majority of leucocytes have a pulmonary vascular transit time only a few seconds longer than erythrocytes. The minority showing slow transit, ~5% in healthy persons, is increased in systemic inflammatory disorders that cause neutrophil priming and loss of deformability. Using a range of imaging techniques, including gamma camera imaging, whole-body counting and single photon-emission computerized tomography, labelled granulocytes were subsequently used to image pulmonary trafficking in lobar pneumonia, bronchiectasis, chronic obstructive pulmonary disease and adult respiratory distress syndrome. GROWING POINTS More recently, eosinophils have been separated in pure form using magnetic bead technology for the study of eosinophil trafficking in asthma. AREAS TIMELY FOR DEVELOPING RESEARCH These include advancement of eosinophil imaging, development of monocyte labelling, development of cell labelling with PET tracers and the tracking of lymphocytes.
Collapse
Affiliation(s)
- Neda Farahi
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, Cambridgeshire, UK
| | - Chrystalla Loutsios
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, Cambridgeshire, UK
| | - Nicola Tregay
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, Cambridgeshire, UK
| | - Charlotte Summers
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, Cambridgeshire, UK
| | - Laurence S C Lok
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, Cambridgeshire, UK
| | - Prina Ruparelia
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, Cambridgeshire, UK
| | - Chandra K Solanki
- Department of Nuclear Medicine, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, Cambridgeshire, UK
| | - Daniel Gillett
- Department of Nuclear Medicine, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, Cambridgeshire, UK
| | - Edwin R Chilvers
- Department of Medicine, University of Cambridge School of Clinical Medicine, Cambridge, Cambridgeshire, UK
| | - A Michael Peters
- Department of Nuclear Medicine, Brighton and Sussex Medical School, Brighton, East Sussex, UK
| |
Collapse
|
15
|
In vivo imaging reveals increased eosinophil uptake in the lungs of obese asthmatic patients. J Allergy Clin Immunol 2018; 142:1659-1662.e8. [PMID: 30071200 PMCID: PMC6218663 DOI: 10.1016/j.jaci.2018.07.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 06/08/2018] [Accepted: 07/18/2018] [Indexed: 01/21/2023]
|
16
|
Korošec P, Gibbs BF, Rijavec M, Custovic A, Turner PJ. Important and specific role for basophils in acute allergic reactions. Clin Exp Allergy 2018; 48:502-512. [PMID: 29431885 PMCID: PMC5947573 DOI: 10.1111/cea.13117] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
IgE‐mediated allergic reactions involve the activation of effector cells, predominantly through the high‐affinity IgE receptor (FcεRI) on mast cells and basophils. Although the mast cell is considered the major effector cell during acute allergic reactions, more recent studies indicate a potentially important and specific role for basophils and their migration which occurs rapidly upon allergen challenge in humans undergoing anaphylaxis. We review the evidence for a role of basophils in contributing to clinical symptoms of anaphylaxis and discuss the possibility that basophil trafficking during anaphylaxis might be a pathogenic (to target organs) or protective (preventing degranulation in circulation) response. Finally, we examine the potential role of basophils in asthma exacerbations. Understanding the factors that regulate basophil trafficking and activation might lead to new diagnostic and therapeutic strategies in anaphylaxis and asthma.
Collapse
Affiliation(s)
- P Korošec
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik, Slovenia
| | - B F Gibbs
- Department of Dermatology and Allergology, Carl von Ossietzky University of Oldenburg, Oldenburg, Germany
| | - M Rijavec
- University Clinic of Respiratory and Allergic Diseases Golnik, Golnik, Slovenia
| | - A Custovic
- Section of Paediatrics and MRC and Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, UK
| | - P J Turner
- Section of Paediatrics and MRC and Asthma UK Centre in Allergic Mechanisms of Asthma, Imperial College London, London, UK
| |
Collapse
|
17
|
Abstract
ABSTRACT
Asthma is a heterogeneous chronic inflammatory disorder of the airways, and not surprisingly, many myeloid cells play a crucial role in pathogenesis. Antigen-presenting dendritic cells are the first to recognize the allergens, pollutants, and viruses that are implicated in asthma pathogenesis, and subsequently initiate the adaptive immune response by migrating to lymph nodes. Eosinophils are the hallmark of type 2 inflammation, releasing toxic compounds in the airways and contributing to airway remodeling. Mast cells and basophils control both the early- and late-phase allergic response and contribute to alterations in smooth muscle reactivity. Finally, relatively little is known about neutrophils and macrophages in this disease. Although many of these myeloid cells respond well to treatment with inhaled steroids, there is now an increasing armamentarium of targeted biologicals that can specifically eliminate only one myeloid cell population, like eosinophils. It is only with those new tools that we will be able to fully understand the role of myeloid cells in chronic asthma in humans.
Collapse
|
18
|
Abstract
Current therapies for eosinophilic disorders are limited. Most treatment approaches remain empirical, are not supported by data from controlled clinical trials, involve the off-label use of agents developed for treatment of other diseases, and tend to rely heavily on the use of glucocorticoids and other agents with significant toxicity. Great progress has been made in the discovery, preclinical development, and clinical testing of a variety of biologics and small molecules that have the potential to directly or indirectly influence eosinophils, eosinophilic inflammation, and the consequences of eosinophil activation.
Collapse
|
19
|
Mosca T, Menezes MCS, Silva AV, Stirbulov R, Forte WCN. Chemotactic and Phagocytic Activity of Blood Neutrophils in Allergic Asthma. Immunol Invest 2016; 44:509-20. [PMID: 26107749 DOI: 10.3109/08820139.2015.1041606] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Allergic asthma is a chronic inflammatory airway disease, and has been considered a T helper-2-biased response. Studies suggest that neutrophils may be associated with exacerbation and asthma severity. We sought to evaluate the chemotactic activity and phagocytic capacity by peripheral blood neutrophils from individuals with controlled and uncontrolled allergic asthma, and compare the results with non-asthmatic controls groups. Blood neutrophils were isolated from 95 patients: 24 with controlled asthma, 24 uncontrolled asthma, 24 healthy subjects and 23 patients with IgE-mediated allergies other than asthma. The neutrophil chemotaxis, stimulated with LPS, autologous serum or homologous serum, was determined using Boyden chambers. The phagocytic capacity was assessed by ingestion of zimosan particles, and digestion phase was analyzed by NBT test. The phagocytic digestion phase and chemotaxis by neutrophils from asthmatic patients was higher than in non-asthmatic controls (p < 0.05). Autologous serum-induced neutrophil chemotaxis in patients with uncontrolled asthma was greater (p < 0.05) than in other study groups. The ingestion phase of phagocytosis showed similar values in asthmatics and non-asthmatics. We conclude that the blood neutrophil from controlled and uncontrolled asthmatic patients exhibit activation markers, particularly phagocytic digestion and chemotactic activities.
Collapse
Affiliation(s)
- Tainá Mosca
- Santa Casa de São Paulo School of Medical Sciences , São Paulo , Brazil , and
| | | | | | | | | |
Collapse
|
20
|
Mosca T, Forte WCN. Comparative Efficiency and Impact on the Activity of Blood Neutrophils Isolated by Percoll, Ficoll and Spontaneous Sedimentation Methods. Immunol Invest 2015; 45:29-37. [DOI: 10.3109/08820139.2015.1085393] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
21
|
Southworth R, Torres Martin de Rosales R, Meszaros LK, Ma MT, Mullen GED, Fruhwirth G, Young JD, Imberti C, Bagunya-Torres J, Andreozzi E, Blower PJ. Opportunities and challenges for metal chemistry in molecular imaging: from gamma camera imaging to PET and multimodality imaging. ADVANCES IN INORGANIC CHEMISTRY 2015; 68:1-41. [PMID: 30381783 PMCID: PMC6205628 DOI: 10.1016/bs.adioch.2015.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The development of medical imaging is a highly multidisciplinary endeavor requiring the close cooperation of clinicians, physicists, engineers, biologists and chemists to identify capabilities, conceive challenges and solutions and apply them in the clinic. The chemistry described in this article illustrates how synergistic advances in these areas drive the technology and its applications forward, with each discipline producing innovations that in turn drive innovations in the others. The main thread running through the article is the shift from single photon radionuclide imaging towards PET, and in turn the emerging shift from PET/CT towards PET/MRI and further, combination of these with optical imaging. Chemistry to support these transitions is exemplified by building on a summary of the status quo, and recent developments, in technetium-99m chemistry for SPECT imaging, followed by a report of recent developments to support clinical application of short lived (Ga-68) and long-lived (Zr-89) positron emitting isotopes, copper isotopes for PET imaging, and combined modality imaging agents based on radiolabelled iron oxide based nanoparticles.
Collapse
Affiliation(s)
- Richard Southworth
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| | | | - Levente K Meszaros
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| | - Michelle T Ma
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| | - Gregory E D Mullen
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| | - Gilbert Fruhwirth
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| | - Jennifer D Young
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| | - Cinzia Imberti
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| | - Julia Bagunya-Torres
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| | - Erica Andreozzi
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| | - Philip J Blower
- King's College London, Division of Imaging Sciences and Biomedical Engineering, St Thomas' Hospital, London, UK
| |
Collapse
|
22
|
Mills B, Awais RO, Luckett J, Turton D, Williams P, Perkins AC, Hill PJ. [(18)F]FDG-6-P as a novel in vivo tool for imaging staphylococcal infections. EJNMMI Res 2015; 5:13. [PMID: 25853019 PMCID: PMC4385282 DOI: 10.1186/s13550-015-0095-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 03/04/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Management of infection is a major clinical problem. Staphylococcus aureus is a Gram-positive bacterium which colonises approximately one third of the adult human population. Staphylococcal infections can be life-threatening and are frequently complicated by multi-antibiotic resistant strains including methicillin-resistant S. aureus (MRSA). Fluorodeoxyglucose ([(18)F]FDG) imaging has been used to identify infection sites; however, it is unable to distinguish between sterile inflammation and bacterial load. We have modified [(18)F]FDG by phosphorylation, producing [(18)F]FDG-6-P to facilitate specific uptake and accumulation by S. aureus through hexose phosphate transporters, which are not present in mammalian cell membranes. This approach leads to the specific uptake of the radiopharmaceutical into the bacteria and not the sites of sterile inflammation. METHODS [(18)F]FDG-6-P was synthesised from [(18)F]FDG. Yield, purity and stability were confirmed by RP-HPLC and iTLC. The specificity of [(18)F]FDG-6-P for the bacterial universal hexose phosphate transporter (UHPT) was confirmed with S. aureus and mammalian cell assays in vitro. Whole body biodistribution and accumulation of [(18)F]FDG-6-P at the sites of bioluminescent staphylococcal infection were established in a murine foreign body infection model. RESULTS In vitro validation assays demonstrated that [(18)F]FDG-6-P was stable and specifically transported into S. aureus but not mammalian cells. [(18)F]FDG-6-P was elevated at the sites of S. aureus infection in vivo compared to uninfected controls; however, the increase in signal was not significant and unexpectedly, the whole-body biodistribution of [(18)F]FDG-6-P was similar to that of [(18)F]FDG. CONCLUSIONS Despite conclusive in vitro validation, [(18)F]FDG-6-P did not behave as predicted in vivo. However at the site of known infection, [(18)F]FDG-6-P levels were elevated compared with uninfected controls, providing a higher signal-to-noise ratio. The bacterial UHPT can transport hexose phosphates other than glucose, and therefore alternative sugars may show differential biodistribution and provide a means for specific bacterial detection.
Collapse
Affiliation(s)
- Bethany Mills
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Boulevard, Nottingham, NG7 2RD UK
| | - Ramla O Awais
- School of Medicine, University of Nottingham, Nottingham, NG7 2RD UK
| | - Jeni Luckett
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Boulevard, Nottingham, NG7 2RD UK ; School of Medicine, University of Nottingham, Nottingham, NG7 2RD UK
| | - Dave Turton
- PETNET Solutions, Nottingham City Hospital, Hucknall Road, Nottingham, NG5 1 PB UK
| | - Paul Williams
- School of Life Sciences, Centre for Biomolecular Sciences, University of Nottingham, University Boulevard, Nottingham, NG7 2RD UK
| | - Alan C Perkins
- School of Medicine, University of Nottingham, Nottingham, NG7 2RD UK
| | - Philip J Hill
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Sutton Bonington, LE12 5RD UK
| |
Collapse
|
23
|
Charoenphun P, Meszaros LK, Chuamsaamarkkee K, Sharif-Paghaleh E, Ballinger JR, Ferris TJ, Went MJ, Mullen GED, Blower PJ. [(89)Zr]oxinate4 for long-term in vivo cell tracking by positron emission tomography. Eur J Nucl Med Mol Imaging 2015; 42:278-87. [PMID: 25359636 PMCID: PMC4315484 DOI: 10.1007/s00259-014-2945-x] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Accepted: 10/16/2014] [Indexed: 01/08/2023]
Abstract
PURPOSE (111)In (typically as [(111)In]oxinate3) is a gold standard radiolabel for cell tracking in humans by scintigraphy. A long half-life positron-emitting radiolabel to serve the same purpose using positron emission tomography (PET) has long been sought. We aimed to develop an (89)Zr PET tracer for cell labelling and compare it with [(111)In]oxinate3 single photon emission computed tomography (SPECT). METHODS [(89)Zr]Oxinate4 was synthesised and its uptake and efflux were measured in vitro in three cell lines and in human leukocytes. The in vivo biodistribution of eGFP-5T33 murine myeloma cells labelled using [(89)Zr]oxinate4 or [(111)In]oxinate3 was monitored for up to 14 days. (89)Zr retention by living radiolabelled eGFP-positive cells in vivo was monitored by FACS sorting of liver, spleen and bone marrow cells followed by gamma counting. RESULTS Zr labelling was effective in all cell types with yields comparable with (111)In labelling. Retention of (89)Zr in cells in vitro after 24 h was significantly better (range 71 to >90%) than (111)In (43-52%). eGFP-5T33 cells in vivo showed the same early biodistribution whether labelled with (111)In or (89)Zr (initial pulmonary accumulation followed by migration to liver, spleen and bone marrow), but later translocation of radioactivity to kidneys was much greater for (111)In. In liver, spleen and bone marrow at least 92% of (89)Zr remained associated with eGFP-positive cells after 7 days in vivo. CONCLUSION [(89)Zr]Oxinate4 offers a potential solution to the emerging need for a long half-life PET tracer for cell tracking in vivo and deserves further evaluation of its effects on survival and behaviour of different cell types.
Collapse
Affiliation(s)
- Putthiporn Charoenphun
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Levente K. Meszaros
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Krisanat Chuamsaamarkkee
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Ehsan Sharif-Paghaleh
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - James R. Ballinger
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Trevor J. Ferris
- School of Physical Sciences, University of Kent, Canterbury, CT2 7NH UK
| | - Michael J. Went
- School of Physical Sciences, University of Kent, Canterbury, CT2 7NH UK
| | - Gregory E. D. Mullen
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
| | - Philip J. Blower
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas’ Hospital, London, SE1 7EH UK
- Division of Chemistry, King’s College London, Britannia House, 7 Trinity St, London, SE11DB UK
| |
Collapse
|
24
|
Lukawska JJ, Livieratos L, Sawyer BM, Lee T, O'Doherty M, Blower PJ, Kofi M, Ballinger JR, Corrigan CJ, Gnanasegaran G, Sharif-Paghaleh E, Mullen GE. Imaging Inflammation in Asthma: Real Time, Differential Tracking of Human Neutrophil and Eosinophil Migration in Allergen Challenged, Atopic Asthmatics in Vivo. EBioMedicine 2014; 1:173-80. [PMID: 26137523 PMCID: PMC4457433 DOI: 10.1016/j.ebiom.2014.10.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 10/25/2014] [Accepted: 10/26/2014] [Indexed: 11/01/2022] Open
Abstract
BACKGROUND It is important to study differential inflammatory cellular migration, particularly of eosinophils and neutrophils, in asthma and how this is influenced by environmental stimuli such as allergen exposure and the effects of anti asthma therapy. METHODS We isolated blood neutrophils and eosinophils from 12 atopic asthmatic human volunteers (Group 1 - four Early Allergic Responders unchallenged (EAR); Group 2 - four Early and Late Allergic Responders (LAR) challenged; Group 3 - four EAR and LAR challenged and treated with systemic corticosteroids) using cGMP CD16 CliniMACS. Cells were isolated prior to allergen challenge where applicable, labelled with (99m)Tc-HMPAO and then re-infused intravenously. The kinetics of cellular influx/efflux into the lungs and other organs were imaged via scintigraphy over 4 h, starting at 5 to 6 h following allergen challenge where applicable. RESULTS Neutrophils and eosinophils were isolated to a mean (SD) purity of 98.36% (1.09) and 96.31% (3.0), respectively. Asthmatic neutrophils were activated at baseline, mean (SD) CD11b(High) cells 46 (10.50) %. Isolation and radiolabelling significantly increased their activation to > 98%. Eosinophils were not activated at baseline, CD69(+) cells 1.9 (0.6) %, increasing to 38 (3.46) % following isolation and labelling. Analysis of the kinetics of net eosinophil and neutrophil lung influx/efflux conformed to a net exponential clearance with respective mean half times of clearance 6.98 (2.18) and 14.01 (2.63) minutes for Group 1, 6.03 (0.72) and 16.04 (2.0) minutes for Group 2 and 5.63 (1.20) and 14.56 (3.36) minutes for Group 3. These did not significantly differ between the three asthma groups (p > 0.05). CONCLUSIONS Isolation and radiolabelling significantly increased activation of eosinophils (CD69) and completely activated neutrophils (CD11b(High)) in all asthma groups. Net lung neutrophil efflux was significantly slower than that of eosinophils in all asthma study groups. There was a trend for pre-treatment with systemic corticosteroids to reduce lung retention of eosinophils following allergen challenge.
Collapse
Affiliation(s)
- Joanna J. Lukawska
- Kings College London, Division of Imaging Sciences and Bioengineering, St. Thomas' Hospital, London SE1 7EH, UK
- King's College London, Department of Asthma, Allergy & Respiratory Science, 5th Floor, Tower Wing, Guy's Hospital, London SE1 9RT, UK
| | - Lefteris Livieratos
- Kings College London, Division of Imaging Sciences and Bioengineering, St. Thomas' Hospital, London SE1 7EH, UK
- Department of Nuclear Medicine, Guy's and St. Thomas' Hospitals, London SE1 9RT, UK
| | - Barbara M. Sawyer
- Kings College London, Division of Imaging Sciences and Bioengineering, St. Thomas' Hospital, London SE1 7EH, UK
| | - Tak Lee
- King's College London, Department of Asthma, Allergy & Respiratory Science, 5th Floor, Tower Wing, Guy's Hospital, London SE1 9RT, UK
- Allergy Centre, HK Sanatorium and Hospital, Hong Kong
| | - Michael O'Doherty
- Kings College London, Division of Imaging Sciences and Bioengineering, St. Thomas' Hospital, London SE1 7EH, UK
- Department of Nuclear Medicine, Guy's and St. Thomas' Hospitals, London SE1 9RT, UK
| | - Philip J. Blower
- Kings College London, Division of Imaging Sciences and Bioengineering, St. Thomas' Hospital, London SE1 7EH, UK
- Division of Chemistry, King's College London, SE1 9RT London, UK
| | - Martin Kofi
- Department of Nuclear Medicine, Guy's and St. Thomas' Hospitals, London SE1 9RT, UK
| | - James R. Ballinger
- Kings College London, Division of Imaging Sciences and Bioengineering, St. Thomas' Hospital, London SE1 7EH, UK
- Department of Nuclear Medicine, Guy's and St. Thomas' Hospitals, London SE1 9RT, UK
| | - Christopher J. Corrigan
- King's College London, Department of Asthma, Allergy & Respiratory Science, 5th Floor, Tower Wing, Guy's Hospital, London SE1 9RT, UK
| | | | - Ehsan Sharif-Paghaleh
- Kings College London, Division of Imaging Sciences and Bioengineering, St. Thomas' Hospital, London SE1 7EH, UK
| | - Gregory E.D. Mullen
- Kings College London, Division of Imaging Sciences and Bioengineering, St. Thomas' Hospital, London SE1 7EH, UK
| |
Collapse
|
25
|
Destination Airway: Tracking Granulocytes in Asthma. EBioMedicine 2014; 1:105-6. [PMID: 26137518 PMCID: PMC4457434 DOI: 10.1016/j.ebiom.2014.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 11/04/2014] [Indexed: 01/21/2023] Open
|
26
|
Sharif-Paghaleh E, Leech J, Sunassee K, Ali N, Sagoo P, Lechler RI, Smyth LA, Lombardi G, Mullen GE. Monitoring the efficacy of dendritic cell vaccination by early detection of (99m) Tc-HMPAO-labelled CD4(+) T cells. Eur J Immunol 2014; 44:2188-91. [PMID: 24643793 PMCID: PMC4211358 DOI: 10.1002/eji.201344337] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 02/12/2014] [Accepted: 03/12/2014] [Indexed: 12/02/2022]
Affiliation(s)
- Ehsan Sharif-Paghaleh
- Medical Research Council (MRC) Centre for Transplantation, King's College London, King's Health Partners, Guy's Hospital, London, United Kingdom; Division of Imaging Sciences and Biomedical Engineering, King's College London, St. Thomas Hospital, London, United Kingdom
| | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Mitochondria in the center of human eosinophil apoptosis and survival. Int J Mol Sci 2014; 15:3952-69. [PMID: 24603536 PMCID: PMC3975377 DOI: 10.3390/ijms15033952] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 02/20/2014] [Accepted: 02/26/2014] [Indexed: 12/13/2022] Open
Abstract
Eosinophils are abundantly present in most phenotypes of asthma and they contribute to the maintenance and exacerbations of the disease. Regulators of eosinophil longevity play critical roles in determining whether eosinophils accumulate into the airways of asthmatics. Several cytokines enhance eosinophil survival promoting eosinophilic airway inflammation while for example glucocorticoids, the most important anti-inflammatory drugs used to treat asthma, promote the intrinsic pathway of eosinophil apoptosis and by this mechanism contribute to the resolution of eosinophilic airway inflammation. Mitochondria seem to play central roles in both intrinsic mitochondrion-centered and extrinsic receptor-mediated pathways of apoptosis in eosinophils. Mitochondria may also be important for survival signalling. In addition to glucocorticoids, another important agent that regulates human eosinophil longevity via mitochondrial route is nitric oxide, which is present in increased amounts in the airways of asthmatics. Nitric oxide seems to be able to trigger both survival and apoptosis in eosinophils. This review discusses the current evidence of the mechanisms of induced eosinophil apoptosis and survival focusing on the role of mitochondria and clinically relevant stimulants, such as glucocorticoids and nitric oxide.
Collapse
|
28
|
Ilmarinen P, Moilanen E, Kankaanranta H. Regulation of spontaneous eosinophil apoptosis-a neglected area of importance. J Cell Death 2014; 7:1-9. [PMID: 25278781 PMCID: PMC4167313 DOI: 10.4137/jcd.s13588] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 12/12/2013] [Accepted: 01/05/2013] [Indexed: 12/30/2022] Open
Abstract
Asthma is characterized by the accumulation of eosinophils in the airways in most phenotypes. Eosinophils are inflammatory cells that require an external survival-prolonging stimulus such as granulocyte macrophage-colony-stimulating factor (GM-CSF), interleukin (IL)-5, or IL-3 for survival. In their absence, eosinophils are programmed to die by spontaneous apoptosis in a few days. Eosinophil apoptosis can be accelerated by Fas ligation or by pharmacological agents such as glucocorticoids. Evidence exists for the relevance of these survival-prolonging and pro-apoptotic agents in the regulation of eosinophilic inflammation in inflamed airways. Much less is known about the physiological significance and mechanisms of spontaneous eosinophil apoptosis even though it forms the basis of regulation of eosinophil longevity by pathophysiological factors and pharmacological agents. This review concentrates on discussing the mechanisms of spontaneous eosinophil apoptosis compared to those of glucocorticoid- and Fas-induced apoptosis. We aim to answer the question whether the external apoptotic stimuli only augment the ongoing pathway of spontaneous apoptosis or truly activate a specific pathway.
Collapse
Affiliation(s)
- Pinja Ilmarinen
- The Immunopharmacology Research Group, School of Medicine University of Tampere and Tampere University Hospital, Tampere, Finland
| | - Eeva Moilanen
- The Immunopharmacology Research Group, School of Medicine University of Tampere and Tampere University Hospital, Tampere, Finland
| | - Hannu Kankaanranta
- The Immunopharmacology Research Group, School of Medicine University of Tampere and Tampere University Hospital, Tampere, Finland. ; Department of Respiratory Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland and University of Tampere, Tampere, Finland
| |
Collapse
|