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Ye Z, Lu X, Zhu M, Bi L, Yang F, Zhou B, Xu D, Yao L. STING-Targeted PET Imaging for Specific Detection and Therapeutic Monitoring of Myocarditis. Mol Pharm 2024; 21:2865-2877. [PMID: 38666508 DOI: 10.1021/acs.molpharmaceut.4c00024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Imaging strategies for the specific detection and therapeutic monitoring of myocarditis are still lacking. Stimulator of interferon genes (STING) is a signal transduction molecule involved in an innate immune response. Here, we evaluated the feasibility of the recently developed STING-targeted radiotracer [18F]FBTA for positron emission tomography (PET) imaging to detect myocardial inflammation and monitor treatment in myocarditis mice. [18F]FBTA-PET imaging was performed in myocarditis mice and normal mice to verify the specificity of [18F]FBTA for the diagnosis of myocarditis. We also performed PET imaging in mice with myocarditis treated to verify the ability of [18F]FBTA in therapeutic monitoring. The expression of STING and inflammatory cell types was confirmed by flow cytometry and immunohistochemistry. [18F]FDG-PET imaging of myocarditis was used as a contrast. [18F]FBTA-PET imaging showed that the average radioactive uptake was significantly higher in the hearts of the myocarditis group than in the control group. STING was highly overexpressed in cardiac inflammatory cells, including macrophages, dendritic cells (DCs), and T cells. However, there was no significant difference in cardiac radiotracer uptake of [18F]FDG between the myocarditis group and the control group. Moreover, cardiac uptake of [18F]FBTA was significantly reduced in cyclosporin A-treated myocarditis mice and myocardial STING expression was also significantly reduced after the treatment. Overall, we showed that a STING-targeted PET tracer [18F]FBTA can be used to monitor changes in the inflammatory microenvironment in myocarditis. Besides, [18F]FBTA-PET is also suitable for real-time monitoring of myocarditis treatment, representing a promising diagnostic and therapeutic monitoring approach for myocarditis.
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Affiliation(s)
- Zhou Ye
- Department of Emergency Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Xin Lu
- Department of Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Department of Nuclear Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Manman Zhu
- Center for Infection and Immunity, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Lei Bi
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Fan Yang
- Department of Pediatrics, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Department of Nuclear Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Bin Zhou
- Department of Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Center of Cerebrovascular Disease, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
| | - Duo Xu
- Department of Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Department of Nuclear Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Guangdong Provincial Engineering Research Center of Molecular Imaging, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
- Guangdong-Hong Kong-Macao University Joint Laboratory of Interventional Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - Lan Yao
- Department of Emergency Medicine, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong 519000, China
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Saraste A, Ståhle M, Roivainen A, Knuuti J. Molecular Imaging of Heart Failure: An Update and Future Trends. Semin Nucl Med 2024:S0001-2998(24)00028-X. [PMID: 38609753 DOI: 10.1053/j.semnuclmed.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 03/19/2024] [Indexed: 04/14/2024]
Abstract
Molecular imaging can detect and quantify pathophysiological processes underlying heart failure, complementing evaluation of cardiac structure and function with other imaging modalities. Targeted tracers have enabled assessment of various cellular and subcellular mechanisms of heart failure aiming for improved phenotyping, risk stratification, and personalized therapy. This review outlines the current status of molecular imaging in heart failure, accompanied with discussion on novel developments. The focus is on radionuclide methods with data from clinical studies. Imaging of myocardial metabolism can identify left ventricle dysfunction caused by myocardial ischemia that may be reversible after revascularization in the presence of viable myocardium. In vivo imaging of active inflammation and amyloid deposition have an established role in the detection of cardiac sarcoidosis and transthyretin amyloidosis. Innervation imaging has well documented prognostic value in predicting heart failure progression and arrhythmias. Tracers specific for inflammation, angiogenesis and myocardial fibrotic activity are in earlier stages of development, but have demonstrated potential value in early characterization of the response to myocardial injury and prediction of cardiac function over time. Early detection of disease activity is a key for transition from medical treatment of clinically overt heart failure towards a personalized approach aimed at supporting repair and preventing progressive cardiac dysfunction.
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Affiliation(s)
- Antti Saraste
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland; Heart Center, Turku University Hospital and University of Turku, Turku, Finland.
| | - Mia Ståhle
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland
| | - Anne Roivainen
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland
| | - Juhani Knuuti
- Turku PET Centre, Turku University Hospital and University of Turku, Turku, Finland
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Jiang J, Luo L, Ying N, Wu S, Ji J, Su H, Li X, Zeng D. Electrochemical biosensor based on PAMAM functionalized MXene nanoplatform for detection of folate receptor. Bioelectrochemistry 2024; 156:108627. [PMID: 38142545 DOI: 10.1016/j.bioelechem.2023.108627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/23/2023] [Accepted: 12/11/2023] [Indexed: 12/26/2023]
Abstract
The level of folate receptor (FR) has become one of the independent factors for measuring human tumor diseases. The precise quantification of FR is helpful for the early diagnosis and subsequent treatment of tumors. The modification of electrodes is a key issue in ensuring and enhancing the electrochemical biosensing ability. In this study, we in-situ synthesized a nanocomposite material with excellent conductivity and stability by grafting first-generation poly(amidoamine) dendrimers onto the MXene (Ti3C2TX) as the immobilized matrix (PAMAM@MXene). An electrochemical sensor was developed for FR monitor by loading the PAMAM@MXene on screen-printed carbon electrodes (SPCEs). Scanning electron microscopy (SEM) supported the effective synthesis of PAMAM@MXene. Under optimal conditions, the prepared sensor achieved the quantification of FR with a wide range of concentrations from 10 ng/mL to 1000 ng/mL with a detection limit (LOD) of 5.6 ng/mL. It also exhibited satisfactory selectivity, reproducibility, and stability, which provided the possibility for expanding new pathways in the detection of clinical FR.
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Affiliation(s)
- Jiayi Jiang
- University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Linghuan Luo
- University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Na Ying
- Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Shu Wu
- University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Jun Ji
- University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Haoyuan Su
- University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Xiaoou Li
- Shanghai University of Medicine & Health Sciences, Shanghai 201318, China.
| | - Dongdong Zeng
- Shanghai University of Medicine & Health Sciences, Shanghai 201318, China.
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Wen X, Zeng X, Liu J, Zeng X, Zhang Y, Cheng X, Huang J, Li Y, Zhuang R, Zhang X, Guo Z. In Vivo Comparative Study of Radioiodinated Folate Receptor Targeting Albumin Probes for Atherosclerosis Plaque Imaging. Bioconjug Chem 2023; 34:2387-2397. [PMID: 38055912 DOI: 10.1021/acs.bioconjchem.3c00486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
The objective of this study is to compare a series of albumin-based folate radiotracers for the potential imaging of folate receptor (FR) positive macrophages in advanced atherosclerotic plaques. Diversified radioiodinated FR-targeting albumin-binding probes ([131I]IBAbHF, [131I]IBNHF, and [131I]HF) were developed through various strategies. Among the three radiotracers, [131I]IBAbHF and [131I]IBNHF showed excellent in vitro stability (>98%) in saline and PBS 7.4 for 24 h. Also, good stability of [131I]IBNHF in mouse serum albumin was monitored using an HSA ELISA kit. The experiments in Raw264.7 macrophages activated by ox-LDL confirmed the specificity of tracers for FR-β. Biodistribution studies of radiotracers were performed to verify the prolonged blood half-life. Prolonged blood half-lives of [131I]IBAbHF, [131I]HF, and [131I]IBNHF were 17.26 ± 4.29, 6.33 ± 2.64, and 5.50 ± 1.26 h, respectively. SPECT-CT imaging of ApoE-/- mice at different stages was performed to evaluate the progression and monitor the prognosis of AS. Evident [131I]IBNHF uptake in atherosclerotic lesions could be observed along with a low background signal. In summary, we demonstrated a proof-of-concept of albumin-based radioligands for FR-targeting atherosclerosis imaging and found that different incorporation of radioiodinated groups resulted in different pharmacokinetic properties. Among these candidate compounds, [131I]IBNHF would be a satisfactory radiotracer for SPECT imaging of atherosclerosis.
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Affiliation(s)
- Xuejun Wen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen 361102, China
| | - Xueyuan Zeng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen 361102, China
| | - Jia Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen 361102, China
| | - Xinying Zeng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen 361102, China
| | - Yiren Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen 361102, China
| | - Xingxing Cheng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen 361102, China
| | - Jinxiong Huang
- Department of Nuclear Medicine & Minnan PET Center, Xiamen Cancer Hospital, the First Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - Yesen Li
- Department of Nuclear Medicine & Minnan PET Center, Xiamen Cancer Hospital, the First Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - Rongqiang Zhuang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen 361102, China
| | - Xianzhong Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen 361102, China
| | - Zhide Guo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen 361102, China
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Jahandideh A, Virta J, Li XG, Liljenbäck H, Moisio O, Ponkamo J, Rajala N, Alix M, Lehtonen J, Mäyränpää MI, Salminen TA, Knuuti J, Jalkanen S, Saraste A, Roivainen A. Vascular adhesion protein-1-targeted PET imaging in autoimmune myocarditis. J Nucl Cardiol 2023; 30:2760-2772. [PMID: 37758963 PMCID: PMC10682147 DOI: 10.1007/s12350-023-03371-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 08/06/2023] [Indexed: 09/29/2023]
Abstract
BACKGROUND Vascular adhesion protein-1 (VAP-1) is an adhesion molecule and primary amine oxidase, and Gallium-68-labeled 1,4,7,10-tetraazacyclododecane-N,N',N″,N‴-tetra-acetic acid conjugated sialic acid-binding immunoglobulin-like lectin 9 motif containing peptide ([68Ga]Ga-DOTA-Siglec-9) is a positron emission tomography (PET) tracer targeting VAP-1. We evaluated the feasibility of PET imaging with [68Ga]Ga-DOTA-Siglec-9 for the detection of myocardial lesions in rats with autoimmune myocarditis. METHODS Rats (n = 9) were immunized twice with porcine cardiac myosin in complete Freund's adjuvant. Control rats (n = 6) were injected with Freund's adjuvant alone. On day 21, in vivo PET/computed tomography (CT) imaging with [68Ga]Ga-DOTA-Siglec-9 was performed, followed by ex vivo autoradiography, histology, and immunohistochemistry of tissue sections. In addition, myocardial samples from three patients with cardiac sarcoidosis were studied. RESULTS [68Ga]Ga-DOTA-Siglec-9 PET/CT images of immunized rats showed higher uptake in myocardial lesions than in myocardium outside lesions (SUVmean, 0.5 ± 0.1 vs 0.3 ± 0.1; P = .003) or control rats (SUVmean, 0.2 ± 0.03; P < .0001), which was confirmed by ex vivo autoradiography of tissue sections. Immunohistochemistry showed VAP-1-positive staining in lesions of rats with myocarditis and in patients with cardiac sarcoidosis. CONCLUSION VAP-1-targeted [68Ga]Ga-DOTA-Siglec-9 PET is a potential novel technique for the detection of myocardial lesions.
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Affiliation(s)
- Arghavan Jahandideh
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Jenni Virta
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Xiang-Guo Li
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
- Department of Chemistry, University of Turku, Turku, Finland
| | - Heidi Liljenbäck
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
- Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Olli Moisio
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Jesse Ponkamo
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Noora Rajala
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
| | - Marion Alix
- Structural Bioinformatics Laboratory, Åbo Akademi University, Turku, Finland
| | - Jukka Lehtonen
- Heart and Lung Center, Helsinki University and Helsinki University Hospital, Helsinki, Finland
| | - Mikko I Mäyränpää
- Department of Pathology, Helsinki University and Helsinki University Hospital, Helsinki, Finland
| | - Tiina A Salminen
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
- Structural Bioinformatics Laboratory, Åbo Akademi University, Turku, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
| | - Sirpa Jalkanen
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
- MediCity Research Laboratory and Institute of Biomedicine, University of Turku, Turku, Finland
| | - Antti Saraste
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland
- Heart Center, Turku University Hospital and University of Turku, Turku, Finland
| | - Anne Roivainen
- Turku PET Centre, University of Turku, Åbo Akademi University and Turku University Hospital, 20520, Turku, Finland.
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland.
- Turku Center for Disease Modeling, University of Turku, Turku, Finland.
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Crisci G, Bobbio E, Gentile P, Bromage DI, Bollano E, Ferone E, Israr MZ, Heaney LM, Polte CL, Cannatà A, Salzano A. Biomarkers in Acute Myocarditis and Chronic Inflammatory Cardiomyopathy: An Updated Review of the Literature. J Clin Med 2023; 12:7214. [PMID: 38068265 PMCID: PMC10706911 DOI: 10.3390/jcm12237214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 11/10/2023] [Accepted: 11/17/2023] [Indexed: 02/15/2024] Open
Abstract
Myocarditis is a disease caused by cardiac inflammation that can progress to dilated cardiomyopathy, heart failure, and eventually death. Several etiologies, including autoimmune, drug-induced, and infectious, lead to inflammation, which causes damage to the myocardium, followed by remodeling and fibrosis. Although there has been an increasing understanding of pathophysiology, early and accurate diagnosis, and effective treatment remain challenging due to the high heterogeneity. As a result, many patients have poor prognosis, with those surviving at risk of long-term sequelae. Current diagnostic methods, including imaging and endomyocardial biopsy, are, at times, expensive, invasive, and not always performed early enough to affect disease progression. Therefore, the identification of accurate, cost-effective, and prognostically informative biomarkers is critical for screening and treatment. The review then focuses on the biomarkers currently associated with these conditions, which have been extensively studied via blood tests and imaging techniques. The information within this review was retrieved through extensive literature research conducted on major publicly accessible databases and has been collated and revised by an international panel of experts. The biomarkers discussed in the article have shown great promise in clinical research studies and provide clinicians with essential tools for early diagnosis and improved outcomes.
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Affiliation(s)
- Giulia Crisci
- Department of Translational Medical Sciences, Federico II University, 80131 Naples, Italy;
- Italian Clinical Outcome Research and Reporting Program (I-CORRP), 80131 Naples, Italy
| | - Emanuele Bobbio
- Department of Cardiology, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden; (E.B.); (E.B.)
- Institute of Medicine, The Sahlgrenska Academy at the University of Gothenburg, 41390 Gothenburg, Sweden;
| | - Piero Gentile
- De Gasperis Cardio Center, Niguarda Hospital, 20162 Milan, Italy;
| | - Daniel I. Bromage
- Department of Cardiology, King’s College Hospital NHS Foundation Trust, Denmark Hill, London SE5 9RS, UK; (D.I.B.); (E.F.)
- Department of Cardiovascular Sciences, Faculty of Life Sciences & Medicine, King’s College London, London SE5 8AF, UK
| | - Entela Bollano
- Department of Cardiology, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden; (E.B.); (E.B.)
- Institute of Medicine, The Sahlgrenska Academy at the University of Gothenburg, 41390 Gothenburg, Sweden;
| | - Emma Ferone
- Department of Cardiology, King’s College Hospital NHS Foundation Trust, Denmark Hill, London SE5 9RS, UK; (D.I.B.); (E.F.)
- Department of Cardiovascular Sciences, Faculty of Life Sciences & Medicine, King’s College London, London SE5 8AF, UK
| | - Muhammad Zubair Israr
- Department of Cardiovascular Sciences, University of Leicester and NIHR Leicester Biomedical Research Centre, Groby Road, Leicester LE3 9QP, UK;
| | - Liam M. Heaney
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough LE11 3TU, UK;
| | - Christian L. Polte
- Institute of Medicine, The Sahlgrenska Academy at the University of Gothenburg, 41390 Gothenburg, Sweden;
- Department of Clinical Physiology, Sahlgrenska University Hospital, 41345 Gothenburg, Sweden
| | - Antonio Cannatà
- Department of Cardiology, King’s College Hospital NHS Foundation Trust, Denmark Hill, London SE5 9RS, UK; (D.I.B.); (E.F.)
- Department of Cardiovascular Sciences, Faculty of Life Sciences & Medicine, King’s College London, London SE5 8AF, UK
| | - Andrea Salzano
- Department of Cardiovascular Sciences, University of Leicester and NIHR Leicester Biomedical Research Centre, Groby Road, Leicester LE3 9QP, UK;
- Cardiology Unit, AORN A Cardarelli, 80131 Naples, Italy
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Adelnia H, Moonshi SS, Wu Y, Bulmer AC, Mckinnon R, Fastier-Wooller JW, Blakey I, Ta HT. A Bioactive Disintegrable Polymer Nanoparticle for Synergistic Vascular Anticalcification. ACS NANO 2023; 17:18775-18791. [PMID: 37650798 DOI: 10.1021/acsnano.3c03041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Although poly(aspartic acid) (PASP), a strong calcium chelating agent, may be potentially effective in inhibition of vascular calcification, its direct administration may lead to side effects. In this study, we employed polysuccinimide, a precursor of PASP, to prepare targeted polysuccinimide-based nanoparticles (PSI NPs) that not only acted as a prodrug but also functioned as a carrier of additional therapeutics to provide powerful synergistic vascular anticalcification effect. This paper shows that chemically modified PSI-NPs can serve as effective nanocarriers for loading of hydrophobic drugs, in addition to anticalcification and antireactive oxygen species (anti-ROS) activities. Curcumin (Cur), with high loading efficiency, was encapsulated into the NPs. The NPs were stable for 16 h in physiological conditions and then slowly dissolved/hydrolyzed to release the therapeutic PASP and the encapsulated drug. The drug release profile was found to be in good agreement with the NP dissolution profile such that complete release occurred after 48 h at physiological conditions. However, under acidic conditions, the NPs were stable, and Cur cumulative release reached only 30% after 1 week. Though highly effective in the prevention of calcium deposition, PSI NPs could not prevent the osteogenic trans-differentiation of vascular smooth muscle cells (VSMCs). The presence of Cur addressed this problem. It not only further reduced ROS level in macrophages but also prevented osteogenic differentiation of VSMCs in vitro. The NPs were examined in vivo in a rat model of vascular calcification induced by kidney failure through an adenine diet. The inclusion of Cur and PSI NPs combined the therapeutic effects of both. Cur-loaded NPs significantly reduced calcium deposition in the aorta without adversely affecting bone integrity or noticeable side effects/toxicity as examined by organ histological and serum biochemistry analyses.
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Affiliation(s)
- Hossein Adelnia
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Queensland 4072, Australia
| | | | - Yuao Wu
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia
| | - Andrew C Bulmer
- School of Pharmacy and Medical Sciences, Griffith University, Southport, Queensland 4222, Australia
| | - Ryan Mckinnon
- School of Pharmacy and Medical Sciences, Griffith University, Southport, Queensland 4222, Australia
| | | | - Idriss Blakey
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Hang Thu Ta
- Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland 4111, Australia
- Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Queensland 4072, Australia
- Bioscience Discipline, School of Environment and Science, Griffith University, Nathan, Queensland 4111, Australia
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8
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Saraste A, Knuuti J, Bengel F. Phenotyping heart failure by nuclear imaging of myocardial perfusion, metabolism, and molecular targets. Eur Heart J Cardiovasc Imaging 2023; 24:1318-1328. [PMID: 37294318 PMCID: PMC10531130 DOI: 10.1093/ehjci/jead128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 05/26/2023] [Indexed: 06/10/2023] Open
Abstract
Nuclear imaging techniques can detect and quantify pathophysiological processes underlying heart failure, complementing evaluation of cardiac structure and function with other imaging modalities. Combined imaging of myocardial perfusion and metabolism can identify left ventricle dysfunction caused by myocardial ischaemia that may be reversible after revascularization in the presence of viable myocardium. High sensitivity of nuclear imaging to detect targeted tracers has enabled assessment of various cellular and subcellular mechanisms of heart failure. Nuclear imaging of active inflammation and amyloid deposition is incorporated into clinical management algorithms of cardiac sarcoidosis and amyloidosis. Innervation imaging has well-documented prognostic value with respect to heart failure progression and arrhythmias. Emerging tracers specific for inflammation and myocardial fibrotic activity are in earlier stages of development but have demonstrated potential value in early characterization of the response to myocardial injury and prediction of adverse left ventricular remodelling. Early detection of disease activity is a key for transition from broad medical treatment of clinically overt heart failure towards a personalized approach aimed at supporting repair and preventing progressive failure. This review outlines the current status of nuclear imaging in phenotyping heart failure and combines it with discussion on novel developments.
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Affiliation(s)
- Antti Saraste
- Turku PET Centre, Turku University Hospital and University of Turku, Kiinamyllynkatu 4–8, 20520 Turku, Finland
- Heart Center, Turku University Hospital and University of Turku, Hämeentie 11, 20520 Turku, Finland
| | - Juhani Knuuti
- Turku PET Centre, Turku University Hospital and University of Turku, Kiinamyllynkatu 4–8, 20520 Turku, Finland
| | - Frank Bengel
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
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9
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Daoud A, Lema DA, Won T, Čiháková D. Integrative single-cell analysis of cardiac and pulmonary sarcoidosis using publicly available cardiac and bronchoalveolar lavage fluid sequencing datasets. Front Cardiovasc Med 2023; 10:1227818. [PMID: 37576111 PMCID: PMC10419306 DOI: 10.3389/fcvm.2023.1227818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/03/2023] [Indexed: 08/15/2023] Open
Abstract
Introduction Cardiac presentation of autoimmune sarcoidosis, known as cardiac sarcoidosis (CS), is a poorly understood disease with high mortality and low diagnosis rate. While CS is an immunological syndrome, little is known about how cardiac parenchymal and stromal cells mediate its pathogenesis. Moreover, while most current sarcoidosis research is based on research in pulmonary sarcoidosis (PS), it remains unclear how much both presentations of sarcoidosis overlap. To tackle these concerns, we leveraged publicly available sarcoidosis transcriptomic datasets. Methods Two publicly available bronchoalveolar lavage single-cell RNA sequencing datasets were integrated to analyze PS relative to control. Additionally, two publicly available cardiac single-nucleus RNA sequencing datasets were integrated to analyze CS relative to control. Following integration, we ran cell-cell communication, transcription factor, and differential expression analyses on parenchymal, stromal, and immune subsets identified in our analysis. Results Our analysis revealed that there was an expansion of stromal and immune cells in PS and CS. We also observed upregulation of Th17.1 and attenuated activation transcriptional profiles in the immune cells of CS and PS relative to control. Additionally, we found upregulation of pro-inflammatory and pro-fibrotic transcriptional profiles in the cardiac stromal cells of CS relative to control. We also found that cardiomyocytes exhibited upregulated cardiac stress and proliferation transcriptional profiles in CS relative to control. Conclusions Our integrative transcriptomic analysis shows that despite tissue-specific differences, there are shared transcriptional trends between CS and PS. It also shows that stromal and parenchymal populations exhibit transcriptional trends that could explain their pathogenic role in CS.
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Affiliation(s)
- Abdel Daoud
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, United States
| | - Diego A. Lema
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Taejoon Won
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Daniela Čiháková
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, United States
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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10
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Banerjee D, Tian R, Cai S. The Role of Innate Immune Cells in Cardiac Injury and Repair: A Metabolic Perspective. Curr Cardiol Rep 2023; 25:631-640. [PMID: 37249739 PMCID: PMC10227821 DOI: 10.1007/s11886-023-01897-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/15/2023] [Indexed: 05/31/2023]
Abstract
PURPOSE OF REVIEW Recent technological advances have identified distinct subpopulations and roles of the cardiac innate immune cells, specifically macrophages and neutrophils. Studies on distinct metabolic pathways of macrophage and neutrophil in cardiac injury are expanding. Here, we elaborate on the roles of cardiac macrophages and neutrophils in concomitance with their metabolism in normal and diseased hearts. RECENT FINDINGS Single-cell techniques combined with fate mapping have identified the clusters of innate immune cell subpopulations present in the resting and diseased hearts. We are beginning to know about the presence of cardiac resident macrophages and their functions. Resident macrophages perform cardiac homeostatic roles, whereas infiltrating neutrophils and macrophages contribute to tissue damage during cardiac injury with eventual role in repair. Prior studies show that metabolic pathways regulate the phenotypes of the macrophages and neutrophils during cardiac injury. Profiling the metabolism of the innate immune cells, especially of resident macrophages during chronic and acute cardiac diseases, can further the understanding of cardiac immunometabolism.
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Affiliation(s)
- Durba Banerjee
- Department of Anesthesiology and Pain Medicine, University of Washington, 850 Republican St., Seattle, WA, 98109, USA
| | - Rong Tian
- Department of Anesthesiology and Pain Medicine, University of Washington, 850 Republican St., Seattle, WA, 98109, USA
| | - Shanshan Cai
- Department of Anesthesiology and Pain Medicine, University of Washington, 850 Republican St., Seattle, WA, 98109, USA.
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11
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Miner MWG, Liljenbäck H, Virta J, Kärnä S, Viitanen R, Elo P, Gardberg M, Teuho J, Saipa P, Rajander J, Mansour HMA, Cleveland NA, Low PS, Li XG, Roivainen A. High folate receptor expression in gliomas can be detected in vivo using folate-based positron emission tomography with high tumor-to-brain uptake ratio divulging potential future targeting possibilities. Front Immunol 2023; 14:1145473. [PMID: 37275898 PMCID: PMC10232737 DOI: 10.3389/fimmu.2023.1145473] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 04/28/2023] [Indexed: 06/07/2023] Open
Abstract
Introduction Non-invasive imaging techniques such as positron emission tomography (PET) are extremely important for cancer detection and characterization especially for difficult to biopsy or extremely delicate organs such as the brain. The folate analogue 1,4,7-triazacylononane-1,4,7-triacetic acid-conjugated folate radiolabeled with aluminum fluoride-18 ([18F]FOL) has been previously shown to accumulate preferentially in tumor cells with an overexpression of folate receptors (FRs) and here was investigated for its ability to detect orthotopic gliomas in a rat model. In addition, we studied the expression of FRs in human glioblastoma samples to investigate if an analogous relationship may exist. Methods Nine BDIX rats were injected with BT4C rat glioma cells into the right hemisphere of the brain. Animals were imaged with gadolinium-enhanced magnetic resonance imaging at on days prior to PET/computed tomography (CT) imaging. Animals were divided into two groups, and were PET/CT imaged with either [18F]FOL or 2-deoxy-2-18F-fluoro-D-glucose ([18F]FDG) on 19 and 32-days post glioma grafting. Two subjects were also PET/CT imaged with [18F]FOL on day 16. Biodistribution was studied and brains were cryosectioned for autoradiography, immunofluorescence, and histological studies. Patient-derived paraffin-embedded glioblastomas were sectioned and stained with similar methods. Results PET imaging showed an increase of [18F]FOL tumor-to-brain uptake ratio (TBR) over the study duration from day 16/19 (3.3 ± 0.9) increasing to 5.7 ± 1.0 by day 32. [18F]FDG PET-imaged rats had a consistent TBR of 1.6 ± 0.1 throughout the study. Ex vivo autoradiography results revealed an exceptionally high TBR of 116.1 ± 26.9 for [18F]FOL while the [18F]FDG values were significantly lower giving 2.9 ± 0.6 (P<0.0001). Immunostaining demonstrated an increased presence of FR-α in the BT4C gliomas versus the contralateral brain tissue, while FR-β was present only on glioma periphery. Human sections assayed showed similar FRs expression characteristics. Conclusion This study shows upregulation of FR-α inside glioma regions in both human and animal tissue, providing a biochemical basis for the observed increased [18F]FOL uptake in animal PET images. These results suggest that FRs targeting imaging and therapeutic compounds may possess clinically relevant translational abilities for the detection and treatment of gliomas.
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Affiliation(s)
| | - Heidi Liljenbäck
- Turku PET Centre, University of Turku, Turku, Finland
- Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Jenni Virta
- Turku PET Centre, University of Turku, Turku, Finland
| | - Salli Kärnä
- Turku PET Centre, University of Turku, Turku, Finland
| | | | - Petri Elo
- Turku PET Centre, University of Turku, Turku, Finland
| | - Maria Gardberg
- Department of Pathology, Turku University Hospital and Institute of Biomedicine, University of Turku, Turku, Finland
| | - Jarmo Teuho
- Turku PET Centre, University of Turku, Turku, Finland
- Turku PET Centre, Turku University Hospital, Turku, Finland
- Department of Medical Physics, Turku University Hospital, Turku, Finland
| | - Piritta Saipa
- Turku PET Centre, University of Turku, Turku, Finland
| | - Johan Rajander
- Accelerator Laboratory, Turku PET Centre, Åbo Akademi University, Turku, Finland
| | | | - Nathan A. Cleveland
- Department of Chemistry, Purdue University, West Lafayette, IN, United States
| | - Philip S. Low
- Department of Chemistry, Purdue University, West Lafayette, IN, United States
| | - Xiang-Guo Li
- Turku PET Centre, University of Turku, Turku, Finland
- Department of Chemistry, University of Turku, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
| | - Anne Roivainen
- Turku PET Centre, University of Turku, Turku, Finland
- Turku Center for Disease Modeling, University of Turku, Turku, Finland
- Turku PET Centre, Turku University Hospital, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, Turku, Finland
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12
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Zhang Y, Wen X, Wang Y, Yang X, Chen Y, Zeng X, Li Y, Huang J, Guo Z, Zhang X. Longitudinal MicroSPECT Imaging of Systemic Sclerosis Model Mice with [ 99mTc]Tc-HYNFA via Folate Receptor Targeting. Mol Pharm 2023; 20:473-480. [PMID: 36305620 DOI: 10.1021/acs.molpharmaceut.2c00717] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Noninvasive single-photon emission computed tomography (SPECT) imaging with [99mTc]Tc-HYNFA via folate receptor (FR) targeting was proposed to assess the inflammation and therapeutic effect of systemic sclerosis (SSc) in model mice. The radiochemical yield and purity of [99mTc]Tc-HYNFA were over 95%, with a specific activity of about 9.36 ± 0.17 MBq/nmol. At the end of induction, the uptake ratios of bleomycin-injected regions on the back-to-muscle (R/M) and lung-to-muscle (L/M) derived from SPECT images were 7.27 ± 0.50 and 4.25 ± 0.15, respectively. The radioactivity uptakes could be blocked by excessive folic acid (FA), and R/M and L/M obviously decreased to 2.78 ± 0.57 and 2.51 ± 0.79, respectively. R/M (2.22 ± 0.71) and L/M (1.62 ± 0.28) decreased very close to those of the control mice group (R/M = 1.99 ± 0.36, L/M = 1.50 ± 0.14) when macrophages had been depleted in advance. After being treated with cyclophosphamide (CTX) or methotrexate (MTX), R/M and L/M decreased to 3.58 ± 0.52 and 2.03 ± 0.32 (CTX treatment) or 2.48 ± 0.64 and 1.83 ± 0.06 (MTX treatment). R/M and L/M were highly correlated with pathological changes. The trend of hydroxyproline content in lungs at the later non-inflammatory phase of each group was similar to the uptake values of the lung in the 4th week from the beginning of induction. [99mTc]Tc-HYNFA had an ideal uptake in SSc lesions. R/M and L/M had a high consistency with pathological changes. SPECT imaging-targeted FR could monitor the therapeutic effect of CTX and MTX. It is expected to be an effective means to evaluate SSc.
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Affiliation(s)
- Yiren Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Xuejun Wen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Yanjie Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Xia Yang
- School of Medicine, Xiamen University, Xiamen 361102, China
| | - Yingxi Chen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Xinying Zeng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Yesen Li
- Department of Nuclear Medicine & Minnan PET Center, Xiamen Cancer Hospital, The First Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - Jinxiong Huang
- Department of Nuclear Medicine & Minnan PET Center, Xiamen Cancer Hospital, The First Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - Zhide Guo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Xianzhong Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
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13
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Heo GS, Diekmann J, Thackeray JT, Liu Y. Nuclear Methods for Immune Cell Imaging: Bridging Molecular Imaging and Individualized Medicine. Circ Cardiovasc Imaging 2023; 16:e014067. [PMID: 36649445 PMCID: PMC9858352 DOI: 10.1161/circimaging.122.014067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Inflammation is a key mechanistic contributor to the progression of cardiovascular disease, from atherosclerosis through ischemic injury and overt heart failure. Recent evidence has identified specific roles of immune cell subpopulations in cardiac pathogenesis that diverges between individual patients. Nuclear imaging approaches facilitate noninvasive and serial quantification of inflammation severity, offering the opportunity to predict eventual outcome, stratify patient risk, and guide novel targeted molecular therapies against specific leukocyte subpopulations. Here, we will discuss the established and emerging nuclear imaging methods to label and track exogenous and endogenous immune cells, with a particular focus on clinical situations in which targeted molecular inflammation imaging would be advantageous. The expanding options for imaging inflammation provide the foundation to bridge between molecular imaging and individual therapy.
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Affiliation(s)
- Gyu Seong Heo
- Mallinckrodt Institute of Radiology, Washington University, St. Louis, MO (G.S.H., Y. L.)
| | - Johanna Diekmann
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany (J.D., J.T.T.)
| | - James T Thackeray
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany (J.D., J.T.T.)
| | - Yongjian Liu
- Mallinckrodt Institute of Radiology, Washington University, St. Louis, MO (G.S.H., Y. L.)
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14
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Recent Advances in Cardiovascular Diseases Research Using Animal Models and PET Radioisotope Tracers. Int J Mol Sci 2022; 24:ijms24010353. [PMID: 36613797 PMCID: PMC9820417 DOI: 10.3390/ijms24010353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
Cardiovascular diseases (CVD) is a collective term describing a range of conditions that affect the heart and blood vessels. Due to the varied nature of the disorders, distinguishing between their causes and monitoring their progress is crucial for finding an effective treatment. Molecular imaging enables non-invasive visualisation and quantification of biological pathways, even at the molecular and subcellular levels, what is essential for understanding the causes and development of CVD. Positron emission tomography imaging is so far recognized as the best method for in vivo studies of the CVD related phenomena. The imaging is based on the use of radioisotope-labelled markers, which have been successfully used in both pre-clinical research and clinical studies. Current research on CVD with the use of such radioconjugates constantly increases our knowledge and understanding of the causes, and brings us closer to effective monitoring and treatment. This review outlines recent advances in the use of the so-far available radioisotope markers in the research on cardiovascular diseases in rodent models, points out the problems and provides a perspective for future applications of PET imaging in CVD studies.
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15
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van der Geest KSM, Sandovici M, Nienhuis PH, Slart RHJA, Heeringa P, Brouwer E, Jiemy WF. Novel PET Imaging of Inflammatory Targets and Cells for the Diagnosis and Monitoring of Giant Cell Arteritis and Polymyalgia Rheumatica. Front Med (Lausanne) 2022; 9:902155. [PMID: 35733858 PMCID: PMC9207253 DOI: 10.3389/fmed.2022.902155] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 05/13/2022] [Indexed: 12/26/2022] Open
Abstract
Giant cell arteritis (GCA) and polymyalgia rheumatica (PMR) are two interrelated inflammatory diseases affecting patients above 50 years of age. Patients with GCA suffer from granulomatous inflammation of medium- to large-sized arteries. This inflammation can lead to severe ischemic complications (e.g., irreversible vision loss and stroke) and aneurysm-related complications (such as aortic dissection). On the other hand, patients suffering from PMR present with proximal stiffness and pain due to inflammation of the shoulder and pelvic girdles. PMR is observed in 40-60% of patients with GCA, while up to 21% of patients suffering from PMR are also affected by GCA. Due to the risk of ischemic complications, GCA has to be promptly treated upon clinical suspicion. The treatment of both GCA and PMR still heavily relies on glucocorticoids (GCs), although novel targeted therapies are emerging. Imaging has a central position in the diagnosis of GCA and PMR. While [18F]fluorodeoxyglucose (FDG)-positron emission tomography (PET) has proven to be a valuable tool for diagnosis of GCA and PMR, it possesses major drawbacks such as unspecific uptake in cells with high glucose metabolism, high background activity in several non-target organs and a decrease of diagnostic accuracy already after a short course of GC treatment. In recent years, our understanding of the immunopathogenesis of GCA and, to some extent, PMR has advanced. In this review, we summarize the current knowledge on the cellular heterogeneity in the immunopathology of GCA/PMR and discuss how recent advances in specific tissue infiltrating leukocyte and stromal cell profiles may be exploited as a source of novel targets for imaging. Finally, we discuss prospective novel PET radiotracers that may be useful for the diagnosis and treatment monitoring in GCA and PMR.
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Affiliation(s)
- Kornelis S. M. van der Geest
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Maria Sandovici
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Pieter H. Nienhuis
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Riemer H. J. A. Slart
- Department of Nuclear Medicine and Molecular Imaging, Medical Imaging Center, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Biomedical Photonic Imaging Group, University of Twente, Enschede, Netherlands
| | - Peter Heeringa
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Elisabeth Brouwer
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - William F. Jiemy
- Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
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Macrophage-Targeted Nanomedicines for ARDS/ALI: Promise and Potential. Inflammation 2022; 45:2124-2141. [PMID: 35641717 PMCID: PMC9154210 DOI: 10.1007/s10753-022-01692-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 04/11/2022] [Accepted: 05/24/2022] [Indexed: 11/05/2022]
Abstract
Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are characterized by progressive lung impairment typically triggered by inflammatory processes. The mortality toll for ARDS/ALI yet remains high because of the poor prognosis, lack of disease-specific inflammation management therapies, and prolonged hospitalizations. The urgency for the development of new effective therapeutic strategies has become acutely evident for patients with coronavirus disease 2019 (COVID-19) who are highly susceptible to ARDS/ALI. We propose that the lack of target specificity in ARDS/ALI of current treatments is one of the reasons for poor patient outcomes. Unlike traditional therapeutics, nanomedicine offers precise drug targeting to inflamed tissues, the capacity to surmount pulmonary barriers, enhanced interactions with lung epithelium, and the potential to reduce off-target and systemic adverse effects. In this article, we focus on the key cellular drivers of inflammation in ARDS/ALI: macrophages. We propose that as macrophages are involved in the etiology of ARDS/ALI and regulate inflammatory cascades, they are a promising target for new therapeutic development. In this review, we offer a survey of multiple nanomedicines that are currently being investigated with promising macrophage targeting potential and strategies for pulmonary delivery. Specifically, we will focus on nanomedicines that have shown engagement with proinflammatory macrophage targets and have the potential to reduce inflammation and reverse tissue damage in ARDS/ALI.
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17
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Herr SA, Gardeen SS, Low PS, Shi R. Targeted delivery of acrolein scavenger hydralazine in spinal cord injury using folate-linker-drug conjugation. Free Radic Biol Med 2022; 184:66-73. [PMID: 35398493 DOI: 10.1016/j.freeradbiomed.2022.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/30/2022] [Accepted: 04/03/2022] [Indexed: 11/26/2022]
Abstract
Oxidative stress has been shown to play a critical pathogenic role in functional loss after spinal cord injury (SCI). As a direct result of oxidative stress, lipid peroxidation-derived aldehydes have emerged as key culprits that sustain secondary injury and contribute significantly to pathological outcomes. Acrolein, a neurotoxin, has been shown to be elevated in SCI and can result in post-SCI neurological deficits. Reducing acrolein has therefore emerged as a novel and effective therapeutic strategy in SCI. Previous studies have revealed that hydralazine, an FDA approved blood pressure lowering medication, when administered after SCI shows strong acrolein scavenging capabilities and significantly improves cellular and behavioral outcomes. However, while effective at scavenging acrolein, hydralazine's blood pressure lowering activity can have a detrimental impact on neurotrauma patients. Here, our goal was to preserve the acrolein scavenging capability while mitigating the effect of hydralazine on blood pressure. We accomplished this using a folate-targeted delivery system to deploy hydralazine to the folate receptor positive inflammatory site of the cord injury. Using a model of rat SCI, we found that this system is effective for targeting the injury site, and that folate targeted hydralazine can scavenge acrolein without significantly impacting blood pressure.
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Affiliation(s)
- Seth A Herr
- Center for Paralysis Research & Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University. Lynn Hall, 625 N Harrison St. West Lafayette, IN, 47907, USA.
| | - Spencer S Gardeen
- Department of Chemistry, College of Science, Purdue University. Drug Discovery Building, 720 Clinic Dr. West Lafayette, IN, 47907, USA.
| | - Philip S Low
- Department of Chemistry, College of Science, Purdue University. Drug Discovery Building, 720 Clinic Dr. West Lafayette, IN, 47907, USA.
| | - Riyi Shi
- Center for Paralysis Research & Department of Basic Medical Sciences, College of Veterinary Medicine, Purdue University. Lynn Hall, 625 N Harrison St. West Lafayette, IN, 47907, USA.
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18
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Puuvuori E, Liggieri F, Velikyan I, Chiodaroli E, Sigfridsson J, Romelin H, Ingvast S, Korsgren O, Hulsart-Billström G, Perchiazzi G, Eriksson O. PET-CT imaging of pulmonary inflammation using [ 68Ga]Ga-DOTA-TATE. EJNMMI Res 2022; 12:19. [PMID: 35394238 PMCID: PMC8994000 DOI: 10.1186/s13550-022-00892-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 03/28/2022] [Indexed: 12/21/2022] Open
Abstract
PURPOSE In the characterization of severe lung diseases, early detection of specific inflammatory cells could help to monitor patients' response to therapy and increase chances of survival. Macrophages contribute to regulating the resolution and termination of inflammation and have increasingly been of interest for targeted therapies. [68Ga]Ga-DOTA-TATE is an established clinical radiopharmaceutical targeting somatostatin receptor subtype 2 (SSTR 2). Since activated macrophages (M1) overexpress SSTR 2, the aim of this study was to investigate the applicability of [68Ga]Ga-DOTA-TATE for positron emission tomography (PET) imaging of M1 macrophages in pulmonary inflammation. METHODS Inflammation in the pig lungs was induced by warm saline lavage followed by injurious ventilation in farm pigs (n = 7). Healthy pigs (n = 3) were used as control. A 60-min dynamic PET scan over the lungs was performed after [68Ga]Ga-DOTA-TATE injection and [18F]FDG scan was executed afterward for comparison. The uptake of both tracers was assessed as mean standardized uptake values (SUVmean) 30-60-min post-injection. The PET scans were followed by computed tomography (CT) scans, and the Hounsfield units (HU) were quantified of the coronal segments. Basal and apical segments of the lungs were harvested for histology staining. A rat lung inflammation model was also studied for tracer specificity using lipopolysaccharides (LPS) by oropharyngeal aspiration. Organ biodistribution, ex vivo autoradiography (ARG) and histology samples were conducted on LPS treated, octreotide induced blocking and control healthy rats. RESULTS The accumulation of [68Ga]Ga-DOTA-TATE on pig lavage model was prominent in the more severely injured dorsal segments of the lungs (SUVmean = 0.91 ± 0.56), compared with control animals (SUVmean = 0.27 ± 0.16, p < 0.05). The tracer uptake corresponded to the damaged areas assessed by CT and histology and were in line with HU quantification. The [68Ga]Ga-DOTA-TATE uptake in LPS treated rat lungs could be blocked and was significantly higher compared with control group. CONCLUSION The feasibility of the noninvasive assessment of tissue macrophages using [68Ga]Ga-DOTA-TATE/PET was demonstrated in both porcine and rat lung inflammation models. [68Ga]Ga-DOTA-TATE has a great potential to be used to study the role and presence of macrophages in humans in fight against severe lung diseases.
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Affiliation(s)
- Emmi Puuvuori
- Science for Life Laboratory, Department of Medicinal Chemistry, Uppsala University, Dag Hammarskjölds väg 14C, 3tr, 751 83, Uppsala, Sweden
| | - Francesco Liggieri
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Irina Velikyan
- Science for Life Laboratory, Department of Medicinal Chemistry, Uppsala University, Dag Hammarskjölds väg 14C, 3tr, 751 83, Uppsala, Sweden
| | - Elena Chiodaroli
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Jonathan Sigfridsson
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Hampus Romelin
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Sofie Ingvast
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Olle Korsgren
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Gry Hulsart-Billström
- Science for Life Laboratory, Department of Medicinal Chemistry, Uppsala University, Dag Hammarskjölds väg 14C, 3tr, 751 83, Uppsala, Sweden
| | - Gaetano Perchiazzi
- Hedenstierna Laboratory, Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Olof Eriksson
- Science for Life Laboratory, Department of Medicinal Chemistry, Uppsala University, Dag Hammarskjölds väg 14C, 3tr, 751 83, Uppsala, Sweden.
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19
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Steinz MM, Ezdoglian A, Khodadust F, Molthoff CFM, Srinivasarao M, Low PS, Zwezerijnen GJC, Yaqub M, Beaino W, Windhorst AD, Tas SW, Jansen G, van der Laken CJ. Folate Receptor Beta for Macrophage Imaging in Rheumatoid Arthritis. Front Immunol 2022; 13:819163. [PMID: 35185910 PMCID: PMC8849105 DOI: 10.3389/fimmu.2022.819163] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 01/11/2022] [Indexed: 12/30/2022] Open
Abstract
Non-invasive imaging modalities constitute an increasingly important tool in diagnostic and therapy response monitoring of patients with autoimmune diseases, including rheumatoid arthritis (RA). In particular, macrophage imaging with positron emission tomography (PET) using novel radiotracers based on differential expression of plasma membrane proteins and functioning of cellular processes may be suited for this. Over the past decade, selective expression of folate receptor β (FRβ), a glycosylphosphatidylinositol-anchored plasma membrane protein, on myeloid cells has emerged as an attractive target for macrophage imaging by exploiting the high binding affinity of folate-based PET tracers. This work discusses molecular, biochemical and functional properties of FRβ, describes the preclinical development of a folate-PET tracer and the evaluation of this tracer in a translational model of arthritis for diagnostics and therapy-response monitoring, and finally the first clinical application of the folate-PET tracer in RA patients with active disease. Consequently, folate-based PET tracers hold great promise for macrophage imaging in a variety of (chronic) inflammatory (autoimmune) diseases beyond RA.
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Affiliation(s)
- Maarten M Steinz
- Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Center, VU University Medical Center (VUmc), Amsterdam, Netherlands
| | - Aiarpi Ezdoglian
- Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Center, VU University Medical Center (VUmc), Amsterdam, Netherlands
| | - Fatemeh Khodadust
- Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Center, VU University Medical Center (VUmc), Amsterdam, Netherlands
| | - Carla F M Molthoff
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Center, VU, Amsterdam, Netherlands
| | | | - Philip S Low
- Department of Chemistry, Purdue University, West Lafayette, IN, United States
| | - Gerben J C Zwezerijnen
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Center, VU, Amsterdam, Netherlands
| | - Maqsood Yaqub
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Center, VU, Amsterdam, Netherlands
| | - Wissam Beaino
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Center, VU, Amsterdam, Netherlands
| | - Albert D Windhorst
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Center, VU, Amsterdam, Netherlands
| | - Sander W Tas
- Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Center, AMC, Amsterdam, Netherlands
| | - Gerrit Jansen
- Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Center, VU University Medical Center (VUmc), Amsterdam, Netherlands
| | - Conny J van der Laken
- Department of Rheumatology and Clinical Immunology, Amsterdam University Medical Center, VU University Medical Center (VUmc), Amsterdam, Netherlands
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20
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Li X, Wang R, Zhang Y, Han S, Gan Y, Liang Q, Ma X, Rong P, Wang W, Li W. Molecular imaging of tumor-associated macrophages in cancer immunotherapy. Ther Adv Med Oncol 2022; 14:17588359221076194. [PMID: 35251314 PMCID: PMC8891912 DOI: 10.1177/17588359221076194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 01/10/2022] [Indexed: 12/20/2022] Open
Abstract
Tumor-associated macrophages (TAMs), the most abundant inflammatory cell group in the tumor microenvironment, play an essential role in tumor immune regulation. The infiltration degree of TAMs in the tumor microenvironment is closely related to tumor growth and metastasis, and TAMs have become a promising target in tumor immunotherapy. Molecular imaging is a new interdisciplinary subject that combines medical imaging technology with molecular biology, nuclear medicine, radiation medicine, and computer science. The latest progress in molecular imaging allows the biological processes of cells to be visualized in vivo, which makes it possible to better understand the density and distribution of macrophages in the tumor microenvironment. This review mainly discusses the application of targeting TAM in tumor immunotherapy and the imaging characteristics and progress of targeting TAM molecular probes using various imaging techniques.
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Affiliation(s)
- Xiaoying Li
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Ruike Wang
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Yangnan Zhang
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Shuangze Han
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Yu Gan
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Qi Liang
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Xiaoqian Ma
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Pengfei Rong
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Wei Wang
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
| | - Wei Li
- Department of Radiology, The Third Xiangya Hospital of Central South University, Changsha 410013, Hunan, People’s Republic of China
- Cell Transplantation and Gene Therapy Institute, The Third Xiangya Hospital, Central South University, Changsha, People’s Republic of China
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21
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Ng TSC, Allen HH, Rashidian M, Miller MA. Probing immune infiltration dynamics in cancer by in vivo imaging. Curr Opin Chem Biol 2022; 67:102117. [PMID: 35219177 PMCID: PMC9118268 DOI: 10.1016/j.cbpa.2022.102117] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 12/11/2022]
Abstract
Cancer immunotherapies typically aim to stimulate the accumulation and activity of cytotoxic T-cells or pro-inflammatory antigen-presenting cells, reduce immunosuppressive myeloid cells or regulatory T-cells, or elicit some combination of effects thereof. Notwithstanding the encouraging results, immunotherapies such as PD-1/PD-L1-targeted immune checkpoint blockade act heterogeneously across individual patients. It remains challenging to predict and monitor individual responses, especially across multiple sites of metastasis or sites of potential toxicity. To address this need, in vivo imaging of both adaptive and innate immune cell populations has emerged as a tool to quantify spatial leukocyte accumulation in tumors non-invasively. Here we review recent progress in the translational development of probes for in vivo leukocyte imaging, focusing on complementary perspectives provided by imaging of T-cells, phagocytic macrophages, and their responses to therapy.
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Affiliation(s)
- Thomas S C Ng
- Center for Systems Biology, Massachusetts General Hospital Research Institute, 185 Cambridge St, Boston, MA 02114, United States; Department of Radiology, Massachusetts General Hospital and Harvard Medical School, 55 Fruit St, Boston, MA 02114, United States
| | - Harris H Allen
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Ave, Boston, MA 02115, United States
| | - Mohammad Rashidian
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute, Harvard Medical School, 450 Brookline Ave, Boston, MA 02115, United States; Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, United States
| | - Miles A Miller
- Center for Systems Biology, Massachusetts General Hospital Research Institute, 185 Cambridge St, Boston, MA 02114, United States; Department of Radiology, Massachusetts General Hospital and Harvard Medical School, 55 Fruit St, Boston, MA 02114, United States.
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22
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Jahandideh A, Ståhle M, Virta J, Li XG, Liljenbäck H, Moisio O, Knuuti J, Roivainen A, Saraste A. Evaluation of [ 68Ga]Ga-NODAGA-RGD for PET Imaging of Rat Autoimmune Myocarditis. Front Med (Lausanne) 2022; 8:783596. [PMID: 34977085 PMCID: PMC8714834 DOI: 10.3389/fmed.2021.783596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Accepted: 11/15/2021] [Indexed: 12/26/2022] Open
Abstract
The 68Gallium-labeled 1,4,7-triazacyclononane-1-glutaric acid-4,7-diacetic acid conjugated radiolabelled arginine-glycine-aspartic acid peptide ([68Ga]Ga-NODAGA-RGD) is a positron emission tomography (PET) tracer binding to cell surface receptor αvβ3 integrin that is upregulated during angiogenesis and inflammation. We studied whether αvβ3 targeting PET imaging can detect myocardial inflammation in a rat model of autoimmune myocarditis. To induce myocarditis, rats (n = 8) were immunized with porcine cardiac myosin in complete Freund's adjuvant on days 0 and 7. Control rats (n = 8) received Freund's adjuvant alone. On day 21, in vivo PET/CT imaging with [68Ga]Ga-NODAGA-RGD followed by ex vivo autoradiography and immunohistochemistry were carried out. Inflammatory lesions were detected histologically in the myocardium of 7 out of 8 immunized rats. In vivo PET images showed higher [68Ga]Ga-NODAGA-RGD accumulation in the myocardium of rats with inflammation than the non-inflamed myocardium of control rats (SUVmean 0.4 ± 0.1 vs. 0.1 ± 0.02; P = 0.00006). Ex vivo autoradiography and histology confirmed that [68Ga]Ga-NODAGA-RGD uptake co-localized with inflammatory lesions containing αvβ3 integrin-positive capillary-like structures. A non-specific [68Ga]Ga-DOTA-(RGE)2 tracer showed 76% lower uptake than [68Ga]Ga-NODAGA-RGD in the inflamed myocardium. Our results indicate that αvβ3 integrin-targeting [68Ga]Ga-NODAGA-RGD is a potential PET tracer for the specific detection of active inflammatory lesions in autoimmune myocarditis.
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Affiliation(s)
| | - Mia Ståhle
- Turku PET Centre, University of Turku, Turku, Finland
| | - Jenni Virta
- Turku PET Centre, University of Turku, Turku, Finland
| | - Xiang-Guo Li
- Turku PET Centre, University of Turku, Turku, Finland
| | - Heidi Liljenbäck
- Turku PET Centre, University of Turku, Turku, Finland.,Turku Center for Disease Modeling, University of Turku, Turku, Finland
| | - Olli Moisio
- Turku PET Centre, University of Turku, Turku, Finland
| | - Juhani Knuuti
- Turku PET Centre, University of Turku, Turku, Finland.,Turku PET Centre, Turku University Hospital, Turku, Finland
| | - Anne Roivainen
- Turku PET Centre, University of Turku, Turku, Finland.,Turku Center for Disease Modeling, University of Turku, Turku, Finland.,Turku PET Centre, Turku University Hospital, Turku, Finland
| | - Antti Saraste
- Turku PET Centre, University of Turku, Turku, Finland.,Turku PET Centre, Turku University Hospital, Turku, Finland.,Heart Center, Turku University Hospital and University of Turku, Turku, Finland
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23
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Wen X, Shi C, Yang L, Zeng X, Lin X, Huang J, Li Y, Zhuang R, Zhu H, Guo Z, Zhang X. A radioiodinated FR-β-targeted tracer with improved pharmacokinetics through modification with an albumin binder for imaging of macrophages in AS and NAFL. Eur J Nucl Med Mol Imaging 2021; 49:503-516. [PMID: 34155537 DOI: 10.1007/s00259-021-05447-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/03/2021] [Indexed: 02/07/2023]
Abstract
PURPOSE The formation of advanced plaques, which is characterized by the uninterrupted aggregation of macrophages with high expression of folate receptor-β (FR-β), is observed in several concomitant metabolic syndromes. The objective of this study was to develop a novel FR-β-targeted single-photon emission computed tomography (SPECT) radiotracer and validate its application to the noninvasive detection of atherosclerosis (AS) plaque and non-alcoholic fatty liver (NAFL). METHODS Two radioiodinated probes, [131I]IPBF and [131I]IBF, were developed, and cell uptake studies were used to identify their specific targets for activated macrophages. Biodistribution in normal mice was performed to obtain the pharmacokinetic information of the probes. Apolipoprotein E knockout (ApoE-/-) mice with atherosclerotic aortas were induced by a high-fat and high-cholesterol (HFHC) diet. To investigate the affinity of radiotracers to FR-β, Kd values were determined using in vitro assays. In addition, the assessments of the aorta in the ApoE-/- mice at different stages were performed using in vivo SPECT/CT imaging, and the findings were compared by histology. RESULTS Both [131I]IPBF and [131I]IBF were synthesized with > 95% radiochemical purity and up to 3 MBq/nmol molar activity. In vitro assay of [131I]IPBF showed a moderate binding affinity to plasma proteins and specific uptake in activated macrophages. The prolonged blood elimination half-life (t1/2z) of [131I]IPBF (8.14 h) was observed in a pharmacokinetic study of normal mice, which was significantly longer than that of [131I]IBF (t1/2z = 2.95 h). As expected, the Kd values of [131I]IPBF and [131I]IBF in the Raw 264.7 cells were 43.94 ± 9.83 nM and 61.69 ± 15.19 nM, respectively. SPECT imaging with [131I]IPBF showed a high uptake in advanced plaques and NAFL. Radioactivity in excised aortas examined by ex vivo autoradiography further confirmed the specific uptake of [131I]IPBF in high-risk AS plaques. CONCLUSIONS In summary, we reported a proof-of-concept study of an albumin-binding folate derivative for macrophage imaging. The FR-β-targeted probe, [131I]IPBF, significantly prolongs the plasma elimination half-life and has the potential for the monitoring of AS plaques and concomitant fatty liver.
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Affiliation(s)
- Xuejun Wen
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen, 361102, China
| | - Changrong Shi
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen, 361102, China
| | - Liu Yang
- State Key Laboratory for Bioactive Substances and Functions of Natural Medicines, Beijing, Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation Study, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Xinying Zeng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen, 361102, China
| | - Xiaoru Lin
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen, 361102, China
| | - Jinxiong Huang
- Department of Nuclear Medicine & Minnan PET Center, Xiamen Cancer Hospital, The First Affiliated Hospital of Xiamen University, Teaching Hospital of Fujian Medical University, Xiamen, 361003, China
| | - Yesen Li
- Department of Nuclear Medicine & Minnan PET Center, Xiamen Cancer Hospital, The First Affiliated Hospital of Xiamen University, Teaching Hospital of Fujian Medical University, Xiamen, 361003, China
| | - Rongqiang Zhuang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen, 361102, China
| | - Haibo Zhu
- State Key Laboratory for Bioactive Substances and Functions of Natural Medicines, Beijing, Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation Study, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Zhide Guo
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen, 361102, China.
| | - Xianzhong Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, 4221-116 Xiang'An South Rd, Xiamen, 361102, China.
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Imaging Inflammation with Positron Emission Tomography. Biomedicines 2021; 9:biomedicines9020212. [PMID: 33669804 PMCID: PMC7922638 DOI: 10.3390/biomedicines9020212] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 01/28/2021] [Accepted: 02/12/2021] [Indexed: 12/19/2022] Open
Abstract
The impact of inflammation on the outcome of many medical conditions such as cardiovascular diseases, neurological disorders, infections, cancer, and autoimmune diseases has been widely acknowledged. However, in contrast to neurological, oncologic, and cardiovascular disorders, imaging plays a minor role in research and management of inflammation. Imaging can provide insights into individual and temporospatial biology and grade of inflammation which can be of diagnostic, therapeutic, and prognostic value. There is therefore an urgent need to evaluate and understand current approaches and potential applications for imaging of inflammation. This review discusses radiotracers for positron emission tomography (PET) that have been used to image inflammation in cardiovascular diseases and other inflammatory conditions with a special emphasis on radiotracers that have already been successfully applied in clinical settings.
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25
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Non- 18F-FDG/ 18F-NaF Radiotracers Proposed for the Diagnosis and Management of Diseases of the Heart and Vasculature. PET Clin 2021; 16:273-284. [PMID: 33589388 DOI: 10.1016/j.cpet.2020.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
18F-fluorodeoxyglucose (18F-FDG) and 18F-sodium fluoride (18F-NaF) are front-runners in PET. However, these tracers have limitations in the imaging of diseases in the heart. A multitude of other radiotracers have been identified as potentially useful PET agents in the identification of cardiovascular disease. This critical review examines recent studies with the use of non-18F-FDG/18F-NaF radiotracers in the identification and surveillance of cardiovascular diseases. We highlight the need for further investigation into alternative PET radiotracers to demonstrate their clinical value in the management of these pathologies.
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26
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Radiosynthesis and preclinical evaluation of [ 68Ga]Ga-NOTA-folate for PET imaging of folate receptor β-positive macrophages. Sci Rep 2020; 10:13593. [PMID: 32788595 PMCID: PMC7423886 DOI: 10.1038/s41598-020-70394-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 07/27/2020] [Indexed: 11/09/2022] Open
Abstract
Folate receptor β (FR-β), a marker expressed on macrophages, is a promising target for imaging of inflammation. Here, we report the radiosynthesis and preclinical evaluation of [68Ga]Ga-NOTA-folate (68Ga-FOL). After determining the affinity of 68Ga-FOL using cells expressing FR-β, we studied atherosclerotic mice with 68Ga-FOL and 18F-FDG PET/CT. In addition, we studied tracer distribution and co-localization with macrophages in aorta cryosections using autoradiography, histology, and immunostaining. The specificity of 68Ga-FOL was assessed in a blocking study with folate glucosamine. As a final step, human radiation doses were extrapolated from rat PET data. We were able to produce 68Ga-FOL with high radiochemical purity and moderate molar activity. Cell binding studies revealed that 68Ga-FOL had 5.1 nM affinity for FR-β. Myocardial uptake of 68Ga-FOL was 20-fold lower than that of 18F-FDG. Autoradiography and immunohistochemistry of the aorta revealed that 68Ga-FOL radioactivity co-localized with Mac-3–positive macrophage-rich atherosclerotic plaques. The plaque-to-healthy vessel wall ratio of 68Ga-FOL was significantly higher than that of 18F-FDG. Blocking studies verified that 68Ga-FOL was specific for FR. Based on estimations from rat data, the human effective dose was 0.0105 mSv/MBq. Together, these findings show that 68Ga-FOL represents a promising new FR-β–targeted tracer for imaging macrophage-associated inflammation.
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