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Schmidt VF, Kapp FG, Goldann C, Huthmann L, Cucuruz B, Brill R, Vielsmeier V, Seebauer CT, Michel AJ, Seidensticker M, Uller W, Weiß JBW, Sint A, Häberle B, Haehl J, Wagner A, Cordes J, Holm A, Schanze D, Ricke J, Kimm MA, Wohlgemuth WA, Zenker M, Wildgruber M. Extracranial Vascular Anomalies Driven by RAS/MAPK Variants: Spectrum and Genotype-Phenotype Correlations. J Am Heart Assoc 2024; 13:e033287. [PMID: 38563363 DOI: 10.1161/jaha.123.033287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 03/05/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND We aimed to correlate alterations in the rat sarcoma virus (RAS)/mitogen-activated protein kinase pathway in vascular anomalies to the clinical phenotype for improved patient and treatment stratification. METHODS AND RESULTS This retrospective multicenter cohort study included 29 patients with extracranial vascular anomalies containing mosaic pathogenic variants (PVs) in genes of the RAS/mitogen-activated protein kinase pathway. Tissue samples were collected during invasive treatment or clinically indicated biopsies. PVs were detected by the targeted sequencing of panels of genes known to be associated with vascular anomalies, performed using DNA from affected tissue. Subgroup analyses were performed according to the affected genes with regard to phenotypic characteristics in a descriptive manner. Twenty-five vascular malformations, 3 vascular tumors, and 1 patient with both a vascular malformation and vascular tumor presented the following distribution of PVs in genes: Kirsten rat sarcoma viral oncogene (n=10), neuroblastoma ras viral oncogene homolog (n=1), Harvey rat sarcoma viral oncogene homolog (n=5), V-Raf murine sarcoma viral oncogene homolog B (n=8), and mitogen-activated protein kinase kinase 1 (n=5). Patients with RAS PVs had advanced disease stages according to the Schobinger classification (stage 3-4: RAS, 9/13 versus non-RAS, 3/11) and more frequent progression after treatment (RAS, 10/13 versus non-RAS, 2/11). Lesions with Kirsten rat sarcoma viral oncogene PVs infiltrated more tissue layers compared with the other PVs including other RAS PVs (multiple tissue layers: Kirsten rat sarcoma viral oncogene, 8/10 versus other PVs, 6/19). CONCLUSIONS This comparison of patients with various PVs in genes of the RAS/MAPK pathway provides potential associations with certain morphological and clinical phenotypes. RAS variants were associated with more aggressive phenotypes, generating preliminary data and hypothesis for future larger studies.
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Affiliation(s)
- Vanessa F Schmidt
- Department of Radiology LMU University Hospital, LMU Munich München Germany
- Interdisziplinäres Zentrum für Gefäßanomalien (IZGA) LMU University Hospital, LMU Munich München Germany
| | - Friedrich G Kapp
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine University Medical Center Freiburg, University of Freiburg Germany
| | - Constantin Goldann
- Clinic and Policlinic of Radiology Martin-Luther University Halle-Wittenberg Halle (Saale) Germany
| | - Linda Huthmann
- Clinic and Policlinic of Radiology Martin-Luther University Halle-Wittenberg Halle (Saale) Germany
| | - Beatrix Cucuruz
- Clinic and Policlinic of Radiology Martin-Luther University Halle-Wittenberg Halle (Saale) Germany
| | - Richard Brill
- Clinic and Policlinic of Radiology Martin-Luther University Halle-Wittenberg Halle (Saale) Germany
| | - Veronika Vielsmeier
- Department of Otorhinolaryngology Regensburg University Medical Center Regensburg Germany
| | - Caroline T Seebauer
- Department of Otorhinolaryngology Regensburg University Medical Center Regensburg Germany
| | - Armin-Johannes Michel
- Department of Pediatric and Adolescent Surgery Paracelsus Medical University Hospital Salzburg Austria
| | - Max Seidensticker
- Department of Radiology LMU University Hospital, LMU Munich München Germany
- Interdisziplinäres Zentrum für Gefäßanomalien (IZGA) LMU University Hospital, LMU Munich München Germany
| | - Wibke Uller
- Department of Diagnostic and Interventional Radiology University of Freiburg Medical Centre, Medical Faculty of the University of Freiburg Freiburg Germany
| | - Jakob B W Weiß
- Department of Plastic and Hand Surgery University of Freiburg Medical Centre, Medical Faculty of the University of Freiburg Freiburg Germany
| | - Alena Sint
- Department of Radiology LMU University Hospital, LMU Munich München Germany
- Interdisziplinäres Zentrum für Gefäßanomalien (IZGA) LMU University Hospital, LMU Munich München Germany
| | - Beate Häberle
- Interdisziplinäres Zentrum für Gefäßanomalien (IZGA) LMU University Hospital, LMU Munich München Germany
- Department of Pediatric Surgery, Dr. von Hauner Children's Hospital LMU University Hospital, LMU Munich München Germany
| | - Julia Haehl
- Interdisziplinäres Zentrum für Gefäßanomalien (IZGA) LMU University Hospital, LMU Munich München Germany
- Department of Pediatric Surgery, Dr. von Hauner Children's Hospital LMU University Hospital, LMU Munich München Germany
| | - Alexandra Wagner
- Interdisziplinäres Zentrum für Gefäßanomalien (IZGA) LMU University Hospital, LMU Munich München Germany
- Department of Pediatric Surgery, Dr. von Hauner Children's Hospital LMU University Hospital, LMU Munich München Germany
| | - Johanna Cordes
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine University Medical Center Freiburg, University of Freiburg Germany
| | - Annegret Holm
- Division of Pediatric Hematology and Oncology, Department of Pediatric and Adolescent Medicine University Medical Center Freiburg, University of Freiburg Germany
| | - Denny Schanze
- Institute of Human Genetics, University Hospital Magdeburg Magdeburg Germany
| | - Jens Ricke
- Department of Radiology LMU University Hospital, LMU Munich München Germany
- Interdisziplinäres Zentrum für Gefäßanomalien (IZGA) LMU University Hospital, LMU Munich München Germany
| | - Melanie A Kimm
- Department of Radiology LMU University Hospital, LMU Munich München Germany
- Interdisziplinäres Zentrum für Gefäßanomalien (IZGA) LMU University Hospital, LMU Munich München Germany
| | - Walter A Wohlgemuth
- Clinic and Policlinic of Radiology Martin-Luther University Halle-Wittenberg Halle (Saale) Germany
| | - Martin Zenker
- Institute of Human Genetics, University Hospital Magdeburg Magdeburg Germany
| | - Moritz Wildgruber
- Department of Radiology LMU University Hospital, LMU Munich München Germany
- Interdisziplinäres Zentrum für Gefäßanomalien (IZGA) LMU University Hospital, LMU Munich München Germany
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Hirner-Eppeneder H, Öcal E, Stechele M, Öcal O, Gu S, Kimm MA, Wildgruber M, Salvermoser L, Kazmierczak P, Corradini S, Rudelius M, Piontek G, Pech M, Goldberg SN, Ricke J, Alunni-Fabbroni M. Post-therapeutic microRNA-146a in liquid biopsies may determine prognosis in metastatic gastrointestinal cancer patients receiving 90Y-radioembolization. J Cancer Res Clin Oncol 2023; 149:13017-13026. [PMID: 37466799 PMCID: PMC10587196 DOI: 10.1007/s00432-023-05185-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 07/13/2023] [Indexed: 07/20/2023]
Abstract
PURPOSE The role of microRNA-146a (miR-146a) in defining the tumor immune microenvironment (TIME) is well established. The aim of this study was to evaluate circulating miR-146a as an early prognostic marker of 90Y-radioembolization (90Y-RE) in metastatic liver cancer and to assess the correlation between circulating miR-146a and TIME cellular composition in distant, yet untreated metastases. METHODS Twenty-one patients with bilobar liver lesions from gastro-intestinal cancer underwent lobar 90Y-RE. Biopsy of contralateral lobe abscopal tumors was acquired at the onset of a second treatment session at a median of 21 days after initial RE, immediately prior to ablation therapy of the contralateral lobe tumor. miR-146a was measured by RT-qPCR in plasma collected 24 h before (T1) and 48 h after (T2) initial unilobar 90Y-RE. The level of miR-146a was correlated with the infiltration of CD4 + , CD8 + , FoxP3 T cells, CD163 + M2 macrophages and immune-exhausted T cells in the abscopal tumor tissue acquired before the second treatment session. RESULTS Plasma samples collected at T2 showed a higher concentration of miR-146a with respect to T1 in 43% of the patients (p = 0.002). In these patients, tumors revealed a pro-tumorigenic immune composition with enrichment of Tim3 + immune exhausted cells (p = 0.021), in combination with a higher infiltration of CD163 + M2 macrophages and a lower infiltration of CD8 + T cells. Patients with a higher level of miR-146a after 90Y-RE showed a trend to shorter OS (p = 0.055). CONCLUSION miR-146a may represent a novel prognostic biomarker for 90Y-radioembolization in metastatic liver cancer.
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Affiliation(s)
- Heidrun Hirner-Eppeneder
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Elif Öcal
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Matthias Stechele
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Osman Öcal
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Sijing Gu
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Melanie A Kimm
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Moritz Wildgruber
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Lukas Salvermoser
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Philipp Kazmierczak
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Stefanie Corradini
- Department of Radiation Oncology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Martina Rudelius
- Department of Pathology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Guido Piontek
- Department of Pathology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Maciej Pech
- Department of Radiology and Nuclear Medicine, University of Magdeburg, Magdeburg, Germany
| | - S Nahum Goldberg
- Goldyne Savad Institute of Gene Therapy and Division of Image-Guided Therapy and Interventional Oncology, Department of Radiology, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Jens Ricke
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Marianna Alunni-Fabbroni
- Department of Radiology, LMU University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany.
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Kästle S, Stechele MR, Richter L, Schinner R, Öcal E, Alunni-Fabbroni M, De Toni E, Corradini S, Seidensticker M, Goldberg SN, Ricke J, Wildgruber M, Kimm MA. Peripheral blood-based cell signature indicates response to interstitial brachytherapy in primary liver cancer. J Cancer Res Clin Oncol 2023; 149:9777-9786. [PMID: 37247078 PMCID: PMC10423129 DOI: 10.1007/s00432-023-04875-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 05/19/2023] [Indexed: 05/30/2023]
Abstract
PURPOSE Biomarkers are essential to implement personalized therapies in cancer treatment options. As primary liver tumors are increasing and treatment is coupled to liver function and activation of systemic cells of the immune system, we investigated blood-based cells for their ability to predict response to local ablative therapy. METHODS We analyzed peripheral blood cells in 20 patients with primary liver cancer at baseline and following brachytherapy. In addition to platelets, leukocytes, lymphocytes, monocytes, neutrophils and most common ratios PLR, LMR, NMR and NLR, we investigated T cell and NKT cell populations of 11 responders and 9 non-responders using flow cytometry. RESULTS We have found a peripheral blood cell signature that differed significantly between responders and non-responders treated with interstitial brachytherapy (IBT). At baseline, non-responders featured higher numbers of platelets, monocytes and neutrophils, a higher platelet-to-lymphocyte ratio and an increase in the NKT cell population with a concurrent reduction in CD16 + NKT cells. Simultaneously, a lower percentage of CD4 + T cells was present in non-responders, as also reflected in a lower CD4/8 ratio. CD45RO + memory cells were lower in both, CD4 + and CD8 + T cell populations whereas PD-1 + T cells were only present in the CD4 + T cell population. CONCLUSION Baseline blood-based cell signature may function as a biomarker to predict response following brachytherapy in primary liver cancer.
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Affiliation(s)
- Sophia Kästle
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Lisa Richter
- Core Facility Flow Cytometry, Biomedical Center Munich, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Regina Schinner
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Elif Öcal
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | | | - Enrico De Toni
- Department of Medicine II, University Hospital, LMU Munich, Munich, Germany
| | - Stefanie Corradini
- Department of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany
| | - Max Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - S Nahum Goldberg
- Goldyne Savad Institute of Gene Therapy, Hadassah Hebrew University Hospital, Jerusalem, Israel
- Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Division of Image-Guided Therapy and Interventional Oncology, Department of Radiology, Hadassah Hebrew University Hospital, Jerusalem, Israel
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Moritz Wildgruber
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Melanie A Kimm
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany.
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Stechele M, Wildgruber M, Markezana A, Kästle S, Öcal E, Kimm MA, Alunni-Fabbroni M, Paldor M, Haixing L, Salvermoser L, Pech M, Powerski M, Galun E, Ricke J, Goldberg SN. Prediction of Protumorigenic Effects after Image-Guided Radiofrequency Ablation of Hepatocellular Carcinoma Using Biomarkers. J Vasc Interv Radiol 2023; 34:1528-1537.e1. [PMID: 36442741 DOI: 10.1016/j.jvir.2022.11.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 11/01/2022] [Accepted: 11/19/2022] [Indexed: 11/26/2022] Open
Abstract
PURPOSE To perform radiofrequency (RF) ablation of hepatocellular carcinoma (HCC) and to assess serological and histopathological markers of tumorigenesis in distant untreated tumors to determine whether these were associated with unfavorable outcomes such as early relapse and increased biological aggressiveness. MATERIALS AND METHODS The study cohort comprised 13 patients from a prospective single-arm study. All patients underwent 2 ablation sessions of multifocal HCC nodules 14 days apart. Core biopsy samples of untreated tumors were acquired at baseline and at the time of the second ablation session. Samples were stained immunohistochemically with Ki-67 (proliferation) and CD34 (microvasculature). Blood plasma was obtained at baseline and 2 days after the initial ablation session and analyzed for hepatocyte growth factor (HGF), vascular endothelial growth factor C, and angiopoietin-2 using an enzyme-linked immunosorbent assay. The clinical follow-up period ranged from 7 to 25 months. Patients were stratified as responders (complete remission or limited and delayed recurrence at >6 months; n = 6) or nonresponders (any recurrence within 6 months or >3 new tumors or any new tumor of >3 cm thereafter; n = 7). RESULTS In 3 of 7 nonresponders, the Ki-67 index markedly increased in untreated tumors, whereas Ki-67 was stable in all responders. Microvascular density strongly increased in a single nonresponder only. HGF and angiopoietin-2 increased by >30% in 3 of 7 and 4 of 7 nonresponders, respectively, whereas they were stable or decreased in responders. Overall, ≥2 biomarkers were elevated in 6 of 7 (85.7%) nonresponders, whereas 4 of 6 responders demonstrated no increased biomarker and 2 patients demonstrated increase in 1 biomarker only (P = .002). CONCLUSIONS RF ablation of HCC can produce protumorigenic factors that induce effects in distant untreated tumors. These may potentially function as biomarkers of clinical outcome.
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Affiliation(s)
- Matthias Stechele
- Department of Radiology, University Hospital, Ludwig Maximilians University Munich, Munich, Germany.
| | - Moritz Wildgruber
- Department of Radiology, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Aurelia Markezana
- Goldyne Savad Institute of Gene Therapy and Division of Image-Guided Therapy and Interventional Oncology, Department of Radiology, Hadassah Hebrew University Hospital, Jerusalem, Israel
| | - Sophia Kästle
- Department of Radiology, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Elif Öcal
- Department of Radiology, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Melanie A Kimm
- Department of Radiology, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Marianna Alunni-Fabbroni
- Department of Radiology, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Mor Paldor
- Goldyne Savad Institute of Gene Therapy and Division of Image-Guided Therapy and Interventional Oncology, Department of Radiology, Hadassah Hebrew University Hospital, Jerusalem, Israel
| | - Liao Haixing
- Department of Radiology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou, People's Republic of China
| | - Lukas Salvermoser
- Department of Radiology, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Maciej Pech
- Department of Radiology and Nuclear Medicine, Otto-von-Guericke University, Magdeburg, Germany
| | - Maciej Powerski
- Department of Radiology and Nuclear Medicine, Otto-von-Guericke University, Magdeburg, Germany
| | - Eithan Galun
- Goldyne Savad Institute of Gene Therapy and Division of Image-Guided Therapy and Interventional Oncology, Department of Radiology, Hadassah Hebrew University Hospital, Jerusalem, Israel
| | - Jens Ricke
- Department of Radiology, University Hospital, Ludwig Maximilians University Munich, Munich, Germany
| | - Shraga Nahum Goldberg
- Goldyne Savad Institute of Gene Therapy and Division of Image-Guided Therapy and Interventional Oncology, Department of Radiology, Hadassah Hebrew University Hospital, Jerusalem, Israel
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Schmidt VF, Masthoff M, Vielsmeier V, Seebauer CT, Cangir Ö, Meyer L, Mükke A, Lang W, Schmid A, Sporns PB, Brill R, Wohlgemuth WA, da Silva NPB, Seidensticker M, Schinner R, Küppers J, Häberle B, Haubner F, Ricke J, Zenker M, Kimm MA, Wildgruber M. Clinical Outcome and Quality of Life of Multimodal Treatment of Extracranial Arteriovenous Malformations: The APOLLON Study Protocol. Cardiovasc Intervent Radiol 2023; 46:142-151. [PMID: 36261507 PMCID: PMC9810564 DOI: 10.1007/s00270-022-03296-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 09/30/2022] [Indexed: 01/11/2023]
Abstract
PURPOSE Arteriovenous malformations (AVMs) as rare diseases are diagnostically and therapeutically challenging. Due to the limited evidence regarding treatment outcome, prospective data are needed on how different treatment regimens affect outcome. The aims of this prospective trial are to determine effectiveness, safety, and clinical outcome of multimodal treatment in patients with extracranial AVMs. MATERIALS AND METHODS After clinical and magnetic resonance imaging (MRI)-based diagnosis and informed consent, 146 patients (> 4 years and < 70 years) undergoing multimodal therapy in tertiary care vascular anomalies centers will be included in this prospective observational trial. Treatment options include conservative management, medical therapy, minimally invasive image-guided procedures (embolization, sclerotherapy) and surgery as well as combinations of the latter. The primary outcome is the patient-reported QoL 6 months after completion of treatment using the short form-36 health survey version 2 (SF-36v2) and the corresponding short form-10 health survey (SF-10) for children. In addition, clinical presentation (physician-reported signs), MRI imaging (radiological assessment of devascularization), recurrence rate, and therapeutic safety will be analyzed. Further follow-up will be performed after 12, 24, and 36 months. Moreover, liquid biopsies are being obtained from peripheral blood at multiple time points to investigate potential biomarkers for therapy response and disease progression. DISCUSSION The APOLLON trial is a prospective, multicenter, observational open-label trial with unequal study groups to generate prospective evidence for multimodal treatment of AVMs. A multicenter design with the potential to assess larger populations will provide an increased understanding of multimodal therapy outcome in this orphan disease. TRIAL REGISTRATION German Clinical Trials Register (identification number: DRKS00021019) https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00021019 .
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Affiliation(s)
- Vanessa F. Schmidt
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Max Masthoff
- Clinic for Radiology, University Hospital Muenster, Muenster, Germany
| | - Veronika Vielsmeier
- Department of Otorhinolaryngology, University Hospital Regensburg, Regensburg, Germany
| | - Caroline T. Seebauer
- Department of Otorhinolaryngology, University Hospital Regensburg, Regensburg, Germany
| | - Özlem Cangir
- Department of Pediatric Surgery, Center for Vascular Malformations, Klinikum Barnim GmbH, Werner Forssmann Hospital, Eberswalde, Germany
| | - Lutz Meyer
- Department of Pediatric Surgery, Center for Vascular Malformations, Klinikum Barnim GmbH, Werner Forssmann Hospital, Eberswalde, Germany
| | - Antje Mükke
- Department of Vascular Surgery, University Hospital Erlangen, Erlangen, Germany
| | - Werner Lang
- Department of Vascular Surgery, University Hospital Erlangen, Erlangen, Germany
| | - Axel Schmid
- Department for Radiology, University Hospital Erlangen, Erlangen, Germany
| | - Peter B. Sporns
- Department of Neuroradiology, Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland
| | - Richard Brill
- Clinic and Policlinic of Diagnostic Radiology, Martin-Luther University Halle-Wittenberg, Halle (Saale), Germany
| | - Walter A. Wohlgemuth
- Clinic and Policlinic of Diagnostic Radiology, Martin-Luther University Halle-Wittenberg, Halle (Saale), Germany
| | | | - Max Seidensticker
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Regina Schinner
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Julia Küppers
- Department for Pediatric Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Beate Häberle
- Department for Pediatric Surgery, University Hospital, LMU Munich, Munich, Germany
| | - Frank Haubner
- Department of Otorhinolaryngology, University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Martin Zenker
- Institute for Human Genetics, Otto von Guericke University of Magdeburg, Magdeburg, Germany
| | - Melanie A. Kimm
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Moritz Wildgruber
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
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Busse M, Ferstl S, Kimm MA, Hehn L, Steiger K, Allner S, Muller M, Drecoll E, Burkner T, Dierolf M, Gleich B, Weichert W, Pfeiffer F. Multi-Scale Investigation of Human Renal Tissue in Three Dimensions. IEEE Trans Med Imaging 2022; 41:3489-3497. [PMID: 36251918 DOI: 10.1109/tmi.2022.3214344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Histopathology as a diagnostic mainstay for tissue evaluation is strictly a 2D technology. Combining and supplementing this technology with 3D imaging has been proposed as one future avenue towards refining comprehensive tissue analysis. To this end, we have developed a laboratory-based X-ray method allowing for the investigation of tissue samples in three dimensions with isotropic volume information. To assess the potential of our method for micro-morphology evaluation, we selected several kidney regions from three patients with cystic kidney disease, obstructive nephropathy and diabetic glomerulopathy. Tissue specimens were processed using our in-house-developed X-ray eosin stain and investigated with a commercial microCT and our in-house-built NanoCT. The microCT system provided overview scans with voxel sizes of [Formula: see text] and the NanoCT was employed for higher resolutions including voxel sizes from [Formula: see text] to 210 nm. We present a methodology allowing for a precise micro-morphologic investigation in three dimensions which is compatible with conventional histology. Advantages of our methodology are its versatility with respect to multi-scale investigations, being laboratory-based, allowing for non-destructive imaging and providing isotropic volume information. We believe, that after future developmental work this method might contribute to advanced multi-modal tissue diagnostics.
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7
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Gerwing M, Hoffmann E, Kronenberg K, Hansen U, Masthoff M, Helfen A, Geyer C, Wachsmuth L, Höltke C, Maus B, Hoerr V, Krähling T, Hiddeßen L, Heindel W, Karst U, Kimm MA, Schinner R, Eisenblätter M, Faber C, Wildgruber M. Multiparametric MRI enables for differentiation of different degrees of malignancy in two murine models of breast cancer. Front Oncol 2022; 12:1000036. [PMID: 36408159 PMCID: PMC9667047 DOI: 10.3389/fonc.2022.1000036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022] Open
Abstract
Objective The objective of this study was to non-invasively differentiate the degree of malignancy in two murine breast cancer models based on identification of distinct tissue characteristics in a metastatic and non-metastatic tumor model using a multiparametric Magnetic Resonance Imaging (MRI) approach. Methods The highly metastatic 4T1 breast cancer model was compared to the non-metastatic 67NR model. Imaging was conducted on a 9.4 T small animal MRI. The protocol was used to characterize tumors regarding their structural composition, including heterogeneity, intratumoral edema and hemorrhage, as well as endothelial permeability using apparent diffusion coefficient (ADC), T1/T2 mapping and dynamic contrast-enhanced (DCE) imaging. Mice were assessed on either day three, six or nine, with an i.v. injection of the albumin-binding contrast agent gadofosveset. Ex vivo validation of the results was performed with laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS), histology, immunhistochemistry and electron microscopy. Results Significant differences in tumor composition were observed over time and between 4T1 and 67NR tumors. 4T1 tumors showed distorted blood vessels with a thin endothelial layer, resulting in a slower increase in signal intensity after injection of the contrast agent. Higher permeability was further reflected in higher Ktrans values, with consecutive retention of gadolinium in the tumor interstitium visible in MRI. 67NR tumors exhibited blood vessels with a thicker and more intact endothelial layer, resulting in higher peak enhancement, as well as higher maximum slope and area under the curve, but also a visible wash-out of the contrast agent and thus lower Ktrans values. A decreasing accumulation of gadolinium during tumor progression was also visible in both models in LA-ICP-MS. Tissue composition of 4T1 tumors was more heterogeneous, with intratumoral hemorrhage and necrosis and corresponding higher T1 and T2 relaxation times, while 67NR tumors mainly consisted of densely packed tumor cells. Histogram analysis of ADC showed higher values of mean ADC, histogram kurtosis, range and the 90th percentile (p90), as markers for the heterogenous structural composition of 4T1 tumors. Principal component analysis (PCA) discriminated well between the two tumor models. Conclusions Multiparametric MRI as presented in this study enables for the estimation of malignant potential in the two studied tumor models via the assessment of certain tumor features over time.
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Affiliation(s)
- Mirjam Gerwing
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
- *Correspondence: Mirjam Gerwing,
| | - Emily Hoffmann
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Katharina Kronenberg
- Institute of Inorganic and Analytical Chemistry, University of Münster, Münster, Germany
| | - Uwe Hansen
- Institute for Musculoskeletal Medicine, University of Münster, Münster, Germany
| | - Max Masthoff
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Anne Helfen
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Christiane Geyer
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Lydia Wachsmuth
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Carsten Höltke
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Bastian Maus
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Verena Hoerr
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
- Heart Center Bonn, Department of Internal Medicine II, University of Bonn, Bonn, Germany
| | - Tobias Krähling
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Lena Hiddeßen
- Institute of Inorganic and Analytical Chemistry, University of Münster, Münster, Germany
| | - Walter Heindel
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Uwe Karst
- Institute of Inorganic and Analytical Chemistry, University of Münster, Münster, Germany
| | - Melanie A. Kimm
- Department of Radiology, University Hospital, Ludwig-Maximilian University, Munich, Germany
| | - Regina Schinner
- Department of Radiology, University Hospital, Ludwig-Maximilian University, Munich, Germany
| | - Michel Eisenblätter
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
- Department of Diagnostic and Interventional Radiology, University of Freiburg, Freiburg, Germany
| | - Cornelius Faber
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
| | - Moritz Wildgruber
- Clinic of Radiology, University of Münster, Münster, Germany
- Translational Research Imaging Center, University of Münster, Münster, Germany
- Department of Radiology, University Hospital, Ludwig-Maximilian University, Munich, Germany
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8
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Kimm MA, Kästle S, Stechele MMR, Öcal E, Richter L, Ümütlü MR, Schinner R, Öcal O, Salvermoser L, Alunni-Fabbroni M, Seidensticker M, Goldberg SN, Ricke J, Wildgruber M. Early monocyte response following local ablation in hepatocellular carcinoma. Front Oncol 2022; 12:959987. [PMID: 36353535 PMCID: PMC9638411 DOI: 10.3389/fonc.2022.959987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 10/03/2022] [Indexed: 11/07/2023] Open
Abstract
Local ablative therapies are established treatment modalities in the treatment of early- and intermediate-stage hepatocellular carcinoma (HCC). Systemic effects of local ablation on circulating immune cells may contribute to patients' response. Depending on their activation, myeloid cells are able to trigger HCC progression as well as to support anti-tumor immunity. Certain priming of monocytes may already occur while still in the circulation. By using flow cytometry, we analyzed peripheral blood monocyte cell populations from a prospective clinical trial cohort of 21 HCC patients following interstitial brachytherapy (IBT) or radiofrequency ablation (RFA) and investigated alterations in the composition of monocyte subpopulations and monocytic myeloid-derived suppressor cells (mMDSCs) as well as receptors involved in orchestrating monocyte function. We discovered that mMDSC levels increased following both IBT and RFA in virtually all patients. Furthermore, we identified varying alterations in the level of monocyte subpopulations following radiation compared to RFA. (A) Liquid biopsy liquid biopsy of circulating monocytes in the future may provide information on the inflammatory response towards local ablation as part of an orchestrated immune response.
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Affiliation(s)
- Melanie A. Kimm
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Sophia Kästle
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Matthias M. R. Stechele
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Elif Öcal
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Lisa Richter
- Core Facility Flow Cytometry, Biomedical Center Munich, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | - Muzaffer R. Ümütlü
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Regina Schinner
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Osman Öcal
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Lukas Salvermoser
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Marianna Alunni-Fabbroni
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Max Seidensticker
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - S. Nahum Goldberg
- Goldyne Savad Institute of Gene Therapy, Hadassah Hebrew University Hospital, Jerusalem, Israel
- Laboratory for Minimally Invasive Tumor Therapies, Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
- Division of Image-guided Therapy and Interventional Oncology, Department of Radiology, Hadassah Hebrew University Hospital, Jerusalem, Israel
| | - Jens Ricke
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Moritz Wildgruber
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
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9
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Roiser N, Scholz J, Kimm MA, Andrejewski J, Baumgartner C, Braig E, Herzen J, Pfeiffer D, Korbel R. [X-Ray Dark-field radiography: Does this carry potential for diagnosing gout in exotic pets?]. Tierarztl Prax Ausg K Kleintiere Heimtiere 2022; 50:185-196. [PMID: 35790166 DOI: 10.1055/a-1843-7736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE The aim of this study is to evaluate whether X-ray dark-field (DF) radiography is useful for the diagnosis of gout in birds and reptiles and whether this preclinical model could be helpful to establish this non-invasive imaging method in human medicine. MATERIAL AND METHODS A total of 18 limbs originating from 11 birds (7 different species) and 7 reptiles (4 different species) with and without suspected joint gout were measured using a grating-based X-ray dark-field setup and conventional X-ray examination, respectively. Each image acquisition generated a dark-field and a conventional absorption x-ray image. The results of the individual scans were compared with the results of a pathological examination and arthrocentesis. RESULTS In 5 of the birds and 4 of the reptiles examined, gout was detected by pathologic examination. In each group, uric acid crystals were found in the joints of 3 animals by means of arthrocentesis. The uric acid crystals were detectable in 2 bird and 2 reptile limbs in the dark-field image. CONCLUSION The study demonstrated that the urate crystals evoke a clearly visible dark field signal, whereas this was not the case in the conventional radiographs. CLINICAL RELEVANCE The results obtained show that uric acid crystal detection using less invasive imaging methods in an animal model with birds and reptiles may expand gout diagnostics not only in veterinary medicine but also in human medicine and possibly replace arthrocentesis if a DF signal is detectable. Preclinical scanners which use X-ray dark-field and phase-contrast radiography already exist for hands and mammography.
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Affiliation(s)
- Nathalie Roiser
- Zentrum für klinische Tiermedizin, Klinik für Vögel, Kleinsäuger, Reptilien und Zierfische, Tierärztliche Fakultät der Ludwig-Maximilians-Universität München
| | - Josef Scholz
- Lehrstuhl für Biomedizinische Physik, Fakultät für Physik und Munich School of BioEngineering, Technische Universität München
| | - Melanie A Kimm
- Institut für diagnostische und interventionelle Radiologie, Technische Universität München, Klinikum rechts der Isar
| | - Jana Andrejewski
- Lehrstuhl für Biomedizinische Physik, Fakultät für Physik und Munich School of BioEngineering, Technische Universität München
| | | | - Eva Braig
- Lehrstuhl für Biomedizinische Physik, Fakultät für Physik und Munich School of BioEngineering, Technische Universität München
| | - Julia Herzen
- Lehrstuhl für Biomedizinische Physik, Fakultät für Physik und Munich School of BioEngineering, Technische Universität München
| | - Daniela Pfeiffer
- Institut für diagnostische und interventionelle Radiologie, Technische Universität München, Klinikum rechts der Isar
| | - Rüdiger Korbel
- Zentrum für klinische Tiermedizin, Klinik für Vögel, Kleinsäuger, Reptilien und Zierfische, Tierärztliche Fakultät der Ludwig-Maximilians-Universität München
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10
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Li WB, Stangl S, Klapproth A, Shevtsov M, Hernandez A, Kimm MA, Schuemann J, Qiu R, Michalke B, Bernal MA, Li J, Hürkamp K, Zhang Y, Multhoff G. Application of High-Z Gold Nanoparticles in Targeted Cancer Radiotherapy-Pharmacokinetic Modeling, Monte Carlo Simulation and Radiobiological Effect Modeling. Cancers (Basel) 2021; 13:5370. [PMID: 34771534 PMCID: PMC8582555 DOI: 10.3390/cancers13215370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 02/05/2023] Open
Abstract
High-Z gold nanoparticles (AuNPs) conjugated to a targeting antibody can help to improve tumor control in radiotherapy while simultaneously minimizing radiotoxicity to adjacent healthy tissue. This paper summarizes the main findings of a joint research program which applied AuNP-conjugates in preclinical modeling of radiotherapy at the Klinikum rechts der Isar, Technical University of Munich and Helmholtz Zentrum München. A pharmacokinetic model of superparamagnetic iron oxide nanoparticles was developed in preparation for a model simulating the uptake and distribution of AuNPs in mice. Multi-scale Monte Carlo simulations were performed on a single AuNP and multiple AuNPs in tumor cells at cellular and molecular levels to determine enhancements in the radiation dose and generation of chemical radicals in close proximity to AuNPs. A biologically based mathematical model was developed to predict the biological response of AuNPs in radiation enhancement. Although simulations of a single AuNP demonstrated a clear dose enhancement, simulations relating to the generation of chemical radicals and the induction of DNA strand breaks induced by multiple AuNPs showed only a minor dose enhancement. The differences in the simulated enhancements at molecular and cellular levels indicate that further investigations are necessary to better understand the impact of the physical, chemical, and biological parameters in preclinical experimental settings prior to a translation of these AuNPs models into targeted cancer radiotherapy.
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Affiliation(s)
- Wei Bo Li
- Institute of Radiation Medicine, Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (A.K.); (K.H.)
| | - Stefan Stangl
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
| | - Alexander Klapproth
- Institute of Radiation Medicine, Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (A.K.); (K.H.)
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
| | - Maxim Shevtsov
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
- Personalized Medicine Centre, Almazov National Medical Research Centre, 2 Akkuratova Str., 197341 Saint Petersburg, Russia
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), Tikhoretsky Ave., 4, 194064 Saint Petersburg, Russia
| | - Alicia Hernandez
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
| | - Melanie A. Kimm
- Department of Diagnostic and Interventional Radiology, Technische Universität München (TUM), Klinikum Rechts der Isar, 81675 Munich, Germany;
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, 81337 Munich, Germany;
| | - Jan Schuemann
- Physics Division, Department of Radiation Oncology, Massachusetts General Hospital (MGH) & Harvard Medical School, Boston, MA 02114, USA;
| | - Rui Qiu
- Department of Engineering Physics, Tsinghua University, Beijing 100084, China;
| | - Bernhard Michalke
- Research Unit Analytical BioGeoChemistry, Helmholz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany;
| | - Mario A. Bernal
- Gleb Wataghin Institute of Physics, State University of Campinas, Campinas 13083-859, SP, Brazil;
| | - Junli Li
- Department of Radiology, University Hospital, Ludwig-Maximilians-Universität München, 81337 Munich, Germany;
| | - Kerstin Hürkamp
- Institute of Radiation Medicine, Helmholtz Zentrum München-German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany; (A.K.); (K.H.)
| | - Yibao Zhang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing 100142, China;
| | - Gabriele Multhoff
- Center for Translational Cancer Research, Technische Universität München (TranslaTUM), Klinikum Rechts der Isar, Einsteinstr. 25, 81675 Munich, Germany; (S.S.); (M.S.); (A.H.)
- Department of Radiation Oncology, Technishe Universität München (TUM), Klinikum Rechts der Isar, Ismaningerstr. 22, 81675 Munich, Germany
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11
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Scholz J, Roiser N, Braig EM, Petrich C, Birnbacher L, Andrejewski J, Kimm MA, Sauter A, Busse M, Korbel R, Herzen J, Pfeiffer D. X-ray dark-field radiography for in situ gout diagnosis by means of an ex vivo animal study. Sci Rep 2021; 11:19021. [PMID: 34561476 PMCID: PMC8463704 DOI: 10.1038/s41598-021-98151-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/01/2021] [Indexed: 12/27/2022] Open
Abstract
Gout is the most common form of inflammatory arthritis, caused by the deposition of monosodium urate (MSU) crystals in peripheral joints and tissue. Detection of MSU crystals is essential for definitive diagnosis, however the gold standard is an invasive process which is rarely utilized. In fact, most patients are diagnosed or even misdiagnosed based on manifested clinical signs, as indicated by the unchanged premature mortality among gout patients over the past decade, although effective treatment is now available. An alternative, non-invasive approach for the detection of MSU crystals is X-ray dark-field radiography. In our work, we demonstrate that dark-field X-ray radiography can detect naturally developed gout in animals with high diagnostic sensitivity and specificity based on the in situ measurement of MSU crystals. With the results of this study as a potential basis for further research, we believe that X-ray dark-field radiography has the potential to substantially improve gout diagnostics.
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Affiliation(s)
- Josef Scholz
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, James-Franck Str. 1, 85748, Garching, Germany.
| | - Nathalie Roiser
- Clinic for Birds, Small Mammals, Reptiles and Omamental Fish, Centre for Clinical Veterinary Medicine, LMU Munich, 85764, Oberschleißheim, Germany
| | - Eva-Maria Braig
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, James-Franck Str. 1, 85748, Garching, Germany
| | - Christian Petrich
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, James-Franck Str. 1, 85748, Garching, Germany
| | - Lorenz Birnbacher
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Jana Andrejewski
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, James-Franck Str. 1, 85748, Garching, Germany
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
- Department of Radiology, University Hospital, LMU Munich, 81377, Munich, Germany
| | - Andreas Sauter
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Madleen Busse
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, James-Franck Str. 1, 85748, Garching, Germany
| | - Rüdiger Korbel
- Clinic for Birds, Small Mammals, Reptiles and Omamental Fish, Centre for Clinical Veterinary Medicine, LMU Munich, 85764, Oberschleißheim, Germany
| | - Julia Herzen
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, James-Franck Str. 1, 85748, Garching, Germany
| | - Daniela Pfeiffer
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
- Institute for Advanced Study, Technical University of Munich, 85748, Garching, Germany
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12
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Abstract
PURPOSE Myocardial healing following myocardial infarction (MI) is a complex process that is yet to be fully understood. Clinical attempts in regeneration of the injured myocardium using cardiac stem cells faced major challenges, calling for a better understanding of the processes involved at a more basic level in order to foster translation. PROCEDURES We examined the feasibility of volumetric optoacoustic tomography (VOT) in studying healing of the myocardium in different models of MI, including permanent occlusion (PO) of the left coronary artery, temporary occlusion (ischemia-reperfusion-I/R) and infarcted c-kit mutants, a genetic mouse model with impaired cardiac healing. Murine hearts were imaged at 100 Hz frame rate using 800 nm excitation wavelength, corresponding to the peak absorption of indocyanine green (ICG) in plasma and the isosbestic point of haemoglobin. RESULTS The non-invasive real-time volumetric imaging capabilities of VOT have allowed the detection of significant variations in the pulmonary transit time (PTT), a parameter affected by MI, across different murine models. Upon intravenous injection of ICG, we were able to track alterations in cardiac perfusion in I/R models, which were absent in wild-type (wt) PO or kitW/kitW-v PO mice. The wt-PO and I/R models further exhibited irregularities in their cardiac cycles. CONCLUSIONS Clear differences in the PTT, ICG perfusion and cardiac cycle patterns were identified between the different models and days post MI. Overall, the results highlight the unique capacity of VOT for multi-parametric characterization of morphological and functional changes in murine models of MI.
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Affiliation(s)
- Ivana Ivankovic
- Faculty of Medicine and Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland
- Institute for Biomedical Engineering and Department of Information Technology and Electrical Engineering, ETH Zurich, Zurich, Switzerland
| | - Xosé Luís Déan-Ben
- Faculty of Medicine and Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland
- Institute for Biomedical Engineering and Department of Information Technology and Electrical Engineering, ETH Zurich, Zurich, Switzerland
| | - Helena Haas
- Department of Diagnostic and Interventional Radiology, Klinikum Rechts der Isar Technical University of Munich, Munich, Germany
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Klinikum Rechts der Isar Technical University of Munich, Munich, Germany
| | - Moritz Wildgruber
- Department of Diagnostic and Interventional Radiology, Klinikum Rechts der Isar Technical University of Munich, Munich, Germany
- Translational Research Imaging Center, Department of Clinical Radiology, Universitätsklinikum Münster, Munster, Germany
| | - Daniel Razansky
- Faculty of Medicine and Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland.
- Institute for Biomedical Engineering and Department of Information Technology and Electrical Engineering, ETH Zurich, Zurich, Switzerland.
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13
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Liu N, Chen X, Kimm MA, Stechele M, Chen X, Zhang Z, Wildgruber M, Ma X. In vivo optical molecular imaging of inflammation and immunity. J Mol Med (Berl) 2021; 99:1385-1398. [PMID: 34272967 DOI: 10.1007/s00109-021-02115-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 06/04/2021] [Accepted: 07/07/2021] [Indexed: 12/20/2022]
Abstract
Inflammation is the phenotypic form of various diseases. Recent development in molecular imaging provides new insights into the diagnostic and therapeutic evaluation of different inflammatory diseases as well as diseases involving inflammation such as cancer. While conventional imaging techniques used in the clinical setting provide only indirect measures of inflammation such as increased perfusion and altered endothelial permeability, optical imaging is able to report molecular information on diseased tissue and cells. Optical imaging is a quick, noninvasive, nonionizing, and easy-to-use diagnostic technology which has been successfully applied for preclinical research. Further development of optical imaging technology such as optoacoustic imaging overcomes the limitations of mere fluorescence imaging, thereby enabling pilot clinical applications in humans. By means of endogenous and exogenous contrast agents, sites of inflammation can be accurately visualized in vivo. This allows for early disease detection and specific disease characterization, enabling more rapid and targeted therapeutic interventions. In this review, we summarize currently available optical imaging techniques used to detect inflammation, including optical coherence tomography (OCT), bioluminescence, fluorescence, optoacoustics, and Raman spectroscopy. We discuss advantages and disadvantages of the different in vivo imaging applications with a special focus on targeting inflammation including immune cell tracking.
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Affiliation(s)
- Nian Liu
- State Key Laboratory of Natural Medicines, Key Laboratory of Drug Quality Control and Pharmacovigilance, Department of Pharmaceutical Analysis, China Pharmaceutical University, Nanjing, 210009, China
- Department of Chemistry, Technical University of Munich, 85747, Garching, Germany
| | - Xiao Chen
- Klinik und Poliklinik IV, University Hospital, LMU Munich, 80336, Munich, Germany
| | - Melanie A Kimm
- Department of Radiology, University Hospital, LMU Munich, 81337, Munich, Germany
| | - Matthias Stechele
- Department of Radiology, University Hospital, LMU Munich, 81337, Munich, Germany
| | - Xueli Chen
- School of Life Science and Technology, Xidian University, Xi'an 710126, China
| | - Zhimin Zhang
- School of Control Science and Engineering, Shandong University, Jinan, 250061, China
| | - Moritz Wildgruber
- Department of Radiology, University Hospital, LMU Munich, 81337, Munich, Germany
| | - Xiaopeng Ma
- School of Control Science and Engineering, Shandong University, Jinan, 250061, China.
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14
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Kimm MA, Klenk C, Alunni-Fabbroni M, Kästle S, Stechele M, Ricke J, Eisenblätter M, Wildgruber M. Tumor-Associated Macrophages-Implications for Molecular Oncology and Imaging. Biomedicines 2021; 9:biomedicines9040374. [PMID: 33918295 PMCID: PMC8066018 DOI: 10.3390/biomedicines9040374] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 12/21/2022] Open
Abstract
Tumor-associated macrophages (TAMs) represent the largest group of leukocytes within the tumor microenvironment (TME) of solid tumors and orchestrate the composition of anti- as well as pro-tumorigenic factors. This makes TAMs an excellent target for novel cancer therapies. The plasticity of TAMs resulting in varying membrane receptors and expression of intracellular proteins allow the specific characterization of different subsets of TAMs. Those markers similarly allow tracking of TAMs by different means of molecular imaging. This review aims to provides an overview of the origin of tumor-associated macrophages, their polarization in different subtypes, and how characteristic markers of the subtypes can be used as targets for molecular imaging and theranostic approaches.
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Affiliation(s)
- Melanie A. Kimm
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.A.K.); (C.K.); (M.A.-F.); (S.K.); (M.S.); (J.R.)
| | - Christopher Klenk
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.A.K.); (C.K.); (M.A.-F.); (S.K.); (M.S.); (J.R.)
| | - Marianna Alunni-Fabbroni
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.A.K.); (C.K.); (M.A.-F.); (S.K.); (M.S.); (J.R.)
| | - Sophia Kästle
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.A.K.); (C.K.); (M.A.-F.); (S.K.); (M.S.); (J.R.)
| | - Matthias Stechele
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.A.K.); (C.K.); (M.A.-F.); (S.K.); (M.S.); (J.R.)
| | - Jens Ricke
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.A.K.); (C.K.); (M.A.-F.); (S.K.); (M.S.); (J.R.)
| | - Michel Eisenblätter
- Department of Diagnostic and Interventional Radiology, Freiburg University Hospital, 79106 Freiburg, Germany;
| | - Moritz Wildgruber
- Department of Radiology, University Hospital, LMU Munich, 81377 Munich, Germany; (M.A.K.); (C.K.); (M.A.-F.); (S.K.); (M.S.); (J.R.)
- Correspondence: ; Tel.: +49-0-89-4400-76640
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15
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Busse M, Marciniszyn JP, Ferstl S, Kimm MA, Pfeiffer F, Gulder T. 3D-Non-destructive Imaging through Heavy-Metal Eosin Salt Contrast Agents. Chemistry 2021; 27:4561-4566. [PMID: 33300642 PMCID: PMC7986394 DOI: 10.1002/chem.202005203] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Indexed: 12/21/2022]
Abstract
Conventional histology is a destructive technique based on the evaluation of 2D slices of a 3D biopsy. By using 3D X‐ray histology these obstacles can be overcome, but their application is still restricted due to the inherently low attenuation properties of soft tissue. In order to solve this problem, the tissue can be stained before X‐ray computed tomography imaging (CT) to enhance the soft tissue X‐ray contrast. Evaluation of brominated fluorescein salts revealed a mutual influence of the number of bromine atoms and the cations applied on the achieved contrast enhancement. The dibromo fluorescein barium salt turned out to be the ideal X‐ray contrast agent, allowing for 3D imaging and subsequent complementing counterstaining applying standard histological techniques.
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Affiliation(s)
- Madleen Busse
- Department of Physics and Munich School of BioEngineering, Technical University Munich, 85748, Garching, Germany
| | - Jaroslaw P Marciniszyn
- Department of Chemistry and Catalysis Research Center (CRC), Technical University Munich, 85748, Garching, Germany
| | - Simone Ferstl
- Department of Physics and Munich School of BioEngineering, Technical University Munich, 85748, Garching, Germany
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Klinikum Rechts der Isar, Technical University Munich, 81675, Munich, Germany
| | - Franz Pfeiffer
- Department of Physics and Munich School of BioEngineering, Technical University Munich, 85748, Garching, Germany.,Department of Diagnostic and Interventional Radiology, Klinikum Rechts der Isar, Technical University Munich, 81675, Munich, Germany
| | - Tanja Gulder
- Department of Chemistry and Catalysis Research Center (CRC), Technical University Munich, 85748, Garching, Germany.,Institute of Organic Chemistry, Leipzig University, 04103, Leipzig, Germany
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16
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Kimm MA, Shevtsov M, Werner C, Sievert W, Zhiyuan W, Schoppe O, Menze BH, Rummeny EJ, Proksa R, Bystrova O, Martynova M, Multhoff G, Stangl S. Gold Nanoparticle Mediated Multi-Modal CT Imaging of Hsp70 Membrane-Positive Tumors. Cancers (Basel) 2020; 12:cancers12051331. [PMID: 32456049 PMCID: PMC7281090 DOI: 10.3390/cancers12051331] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/18/2020] [Accepted: 05/20/2020] [Indexed: 11/21/2022] Open
Abstract
Imaging techniques such as computed tomographies (CT) play a major role in clinical imaging and diagnosis of malignant lesions. In recent years, metal nanoparticle platforms enabled effective payload delivery for several imaging techniques. Due to the possibility of surface modification, metal nanoparticles are predestined to facilitate molecular tumor targeting. In this work, we demonstrate the feasibility of anti-plasma membrane Heat shock protein 70 (Hsp70) antibody functionalized gold nanoparticles (cmHsp70.1-AuNPs) for tumor-specific multimodal imaging. Membrane-associated Hsp70 is exclusively presented on the plasma membrane of malignant cells of multiple tumor entities but not on corresponding normal cells, predestining this target for a tumor-selective in vivo imaging. In vitro microscopic analysis revealed the presence of cmHsp70.1-AuNPs in the cytosol of tumor cell lines after internalization via the endo-lysosomal pathway. In preclinical models, the biodistribution as well as the intratumoral enrichment of AuNPs were examined 24 h after i.v. injection in tumor-bearing mice. In parallel to spectral CT analysis, histological analysis confirmed the presence of AuNPs within tumor cells. In contrast to control AuNPs, a significant enrichment of cmHsp70.1-AuNPs has been detected selectively inside tumor cells in different tumor mouse models. Furthermore, a machine-learning approach was developed to analyze AuNP accumulations in tumor tissues and organs. In summary, utilizing mHsp70 on tumor cells as a target for the guidance of cmHsp70.1-AuNPs facilitates an enrichment and uniform distribution of nanoparticles in mHsp70-expressing tumor cells that enables various microscopic imaging techniques and spectral-CT-based tumor delineation in vivo.
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Affiliation(s)
- Melanie A. Kimm
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.A.K.); (E.J.R.)
| | - Maxim Shevtsov
- Central Institute for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.S.); (C.W.); (W.S.); (W.Z.); (O.S.); (B.H.M.); (G.M.)
- Pavlov First Saint Petersburg State Medical University, 197022 St. Petersburg, Russia
- Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 St. Petersburg, Russia; (O.B.); (M.M.)
| | - Caroline Werner
- Central Institute for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.S.); (C.W.); (W.S.); (W.Z.); (O.S.); (B.H.M.); (G.M.)
| | - Wolfgang Sievert
- Central Institute for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.S.); (C.W.); (W.S.); (W.Z.); (O.S.); (B.H.M.); (G.M.)
| | - Wu Zhiyuan
- Central Institute for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.S.); (C.W.); (W.S.); (W.Z.); (O.S.); (B.H.M.); (G.M.)
| | - Oliver Schoppe
- Central Institute for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.S.); (C.W.); (W.S.); (W.Z.); (O.S.); (B.H.M.); (G.M.)
- Institute for Advanced Studies, Department of Informatics, Technical University of Munich, 85748 Garching, Germany
| | - Bjoern H. Menze
- Central Institute for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.S.); (C.W.); (W.S.); (W.Z.); (O.S.); (B.H.M.); (G.M.)
- Institute for Advanced Studies, Department of Informatics, Technical University of Munich, 85748 Garching, Germany
| | - Ernst J. Rummeny
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.A.K.); (E.J.R.)
| | - Roland Proksa
- Philips GmbH Innovative Technologies, Research Laboratories, 22335 Hamburg, Germany;
| | - Olga Bystrova
- Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 St. Petersburg, Russia; (O.B.); (M.M.)
| | - Marina Martynova
- Institute of Cytology of the Russian Academy of Sciences (RAS), 194064 St. Petersburg, Russia; (O.B.); (M.M.)
| | - Gabriele Multhoff
- Central Institute for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.S.); (C.W.); (W.S.); (W.Z.); (O.S.); (B.H.M.); (G.M.)
| | - Stefan Stangl
- Central Institute for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar der Technischen Universität München, 81675 Munich, Germany; (M.S.); (C.W.); (W.S.); (W.Z.); (O.S.); (B.H.M.); (G.M.)
- Correspondence: ; Tel.: +49-89-4140-6013; Fax: +49-89-4140-4299
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17
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Ferstl S, Busse M, Muller M, Kimm MA, Drecoll E, Burkner T, Allner S, Dierolf M, Pfeiffer D, Rummeny EJ, Weichert W, Pfeiffer F. Revealing the Microscopic Structure of Human Renal Cell Carcinoma in Three Dimensions. IEEE Trans Med Imaging 2020; 39:1494-1500. [PMID: 31714220 DOI: 10.1109/tmi.2019.2952028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
For fully characterizing renal cell carcinoma (RCC), information about the 3D tissue microstructure is essential. Histopathology, which represents the current diagnostic gold standard, is destructive and only provides 2D information. 3D X-ray histology endeavors to overcome these limitations by generating 3D data. In a laboratory environment, most techniques struggle with limited resolution and the weak X-ray attenuation contrast of soft tissue. We recently developed a laboratory-based method combining nanoscopic X-ray CT with a cytoplasm-specific X-ray stain. Here, we present the application of this method to human RCC biopsies. The NanoCT slices enable pathological characterization of crucial structures by reproducing tissue morphology with a similar detail level as corresponding histological light microscopy images. Beyond that, our data offer deeper insights into the 3D configuration of the tumor. By demonstrating the compatibility of the X-ray stain with standard pathological stains, we highlight the feasibility of integrating staining based NanoCT into the pathological routine.
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18
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Kimm MA, Tzoumas S, Glasl S, Omar M, Symvoulidis P, Olefir I, Rummeny EJ, Meier R, Ntziachristos V. Longitudinal imaging of T cell-based immunotherapy with multi-spectral, multi-scale optoacoustic tomography. Sci Rep 2020; 10:4903. [PMID: 32184401 PMCID: PMC7078227 DOI: 10.1038/s41598-020-61191-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 01/28/2020] [Indexed: 12/31/2022] Open
Abstract
Most imaging studies of immunotherapy have focused on tracking labeled T cell biodistribution in vivo for understanding trafficking and homing parameters and predicting therapeutic efficacy by the presence of transferred T cells at or in the tumour mass. Conversely, we investigate here a novel concept for longitudinally elucidating anatomical and pathophysiological changes of solid tumours after adoptive T cell transfer in a preclinical set up, using previously unexplored in-tandem macroscopic and mesoscopic optoacoustic (photoacoustic) imaging. We show non-invasive in vivo observations of vessel collapse during tumour rejection across entire tumours and observe for the first time longitudinal tumour rejection in a label-free manner based on optical absorption changes in the tumour mass due to cellular decline. We complement these observations with high resolution episcopic fluorescence imaging of T cell biodistribution using optimized T cell labeling based on two near-infrared dyes targeting the cell membrane and the cytoplasm. We discuss how optoacoustic macroscopy and mesoscopy offer unique contrast and immunotherapy insights, allowing label-free and longitudinal observations of tumour therapy. The results demonstrate optoacoustic imaging as an invaluable tool in understanding and optimizing T cell therapy.
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Affiliation(s)
- Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Stratis Tzoumas
- Chair for Biological Imaging, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - Sarah Glasl
- Chair for Biological Imaging, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - Murad Omar
- Chair for Biological Imaging, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - Panagiotis Symvoulidis
- Chair for Biological Imaging, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - Ivan Olefir
- Chair for Biological Imaging, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Reinhard Meier
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Vasilis Ntziachristos
- Chair for Biological Imaging, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany. .,Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany.
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19
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Kimm MA, Willner M, Drecoll E, Herzen J, Noël PB, Rummeny EJ, Pfeiffer F, Fingerle AA. Grating-based phase-contrast CT (PCCT): histopathological correlation of human liver cirrhosis and hepatocellular carcinoma specimen. J Clin Pathol 2020; 73:483-487. [PMID: 31941652 DOI: 10.1136/jclinpath-2019-206380] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 01/24/2023]
Abstract
AIMS To correlate signal intensities in grating-based phase-contrast CT (PCCT) images obtained at a synchrotron light source and a conventional X-ray source with tissue components in human liver cirrhosis and hepatocellular carcinoma (HCC) specimen. METHODS Study approval was obtained by the institutional review board. Human specimen of liver cirrhosis and HCC were imaged at experimental grating-based PCCT setups using either a synchrotron radiation source or a conventional X-ray tube. Tissue samples were sectioned and processed for H&E and Elastica van Gieson staining. PCCT and histological images were manually correlated. Depending on morphology and staining characteristics tissue components like fibrosis, HCC, inflammation, connective tissue and necrosis were differentiated and visually correlated with signal intensity in PCCT images using a 5-point Likert scale with normal liver parenchyma as a reference. RESULTS Grating-based PCCT images of human cirrhotic liver and HCC specimen showed high soft-tissue contrast allowing correlation with histopathological sections. Signal intensities were similar in both setups independent of the nature of the radiation source. Connective tissue and areas of haemorrhage displayed the highest signal intensities, fibrotic liver tissue the lowest. CONCLUSIONS Grating-based PCCT provides comparable results for the characterisation of human specimen of liver cirrhosis and HCC using either a synchrotron light source or a conventional X-ray tube. Due to its high soft-tissue contrast and its applicability to conventional X-ray tubes grating-based PCCT holds potential for preclinical research and virtual histology applications.
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Affiliation(s)
- Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Marian Willner
- Chair of Biomedical Physics, Department of Physics and Munich School of Bioengineering, Technical University of Munich, Garching, Germany
| | - Enken Drecoll
- Department of Pathology, School of Medicine & Technical University of Munich, Munich, Germany
| | - Julia Herzen
- Chair of Biomedical Physics, Department of Physics and Munich School of Bioengineering, Technical University of Munich, Garching, Germany
| | - Peter B Noël
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Franz Pfeiffer
- Chair of Biomedical Physics, Department of Physics and Munich School of Bioengineering, Technical University of Munich, Garching, Germany
| | - Alexander A Fingerle
- Department of Diagnostic and Interventional Radiology, School of Medicine & Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
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20
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Kimm MA, Haas H, Stölting M, Kuhlmann M, Geyer C, Glasl S, Schäfers M, Ntziachristos V, Wildgruber M, Höltke C. Targeting Endothelin Receptors in a Murine Model of Myocardial Infarction Using a Small Molecular Fluorescent Probe. Mol Pharm 2019; 17:109-117. [PMID: 31816245 DOI: 10.1021/acs.molpharmaceut.9b00810] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The endothelin (ET) axis plays a pivotal role in cardiovascular diseases. Enhanced levels of circulating ET-1 have been correlated with an inferior clinical outcome after myocardial infarction (MI) in humans. Thus, the evaluation of endothelin-A receptor (ETAR) expression over time in the course of myocardial injury and healing may offer valuable information toward the understanding of the ET axis involvement in MI. We developed an approach to track the expression of ETAR with a customized molecular imaging probe in a murine model of MI. The small molecular probe based on the ETAR-selective antagonist 3-(1,3-benzodioxol-5-yl)-5-hydroxy-5-(4-methoxyphenyl)-4-[(3,4,5-trimethoxyphenyl)methyl]-2(5H)-furanone (PD156707) was labeled with fluorescent dye, IRDye800cw. Mice undergoing permanent ligation of the left anterior descending artery (LAD) were investigated at day 1, 7, and 21 post surgery after receiving an intravenous injection of the ETAR probe. Cryosections of explanted hearts were analyzed by cryotome-based CCD, and fluorescence reflectance imaging (FRI) and fluorescence signal intensities (SI) were extracted. Fluorescence-mediated tomography (FMT) imaging was performed to visualize probe distribution in the target region in vivo. An enhanced fluorescence signal intensity in the infarct area was detected in cryoCCD images as early as day 1 after surgery and intensified up to 21 days post MI. FRI was capable of detecting significantly enhanced SI in infarcted regions of hearts 7 days after surgery. In vivo imaging by FMT localized enhanced SI in the apex region of infarcted mouse hearts. We verified the localization of the probe and ETAR within the infarct area by immunohistochemistry (IHC). In addition, neovascularized areas were found in the affected myocardium by CD31 staining. Our study demonstrates that the applied fluorescent probe is capable of delineating ETAR expression over time in affected murine myocardium after MI in vivo and ex vivo.
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Affiliation(s)
- Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, School of Medicine and Klinikum rechts der Isar , Technical University of Munich , Munich 81675 , Germany
| | - Helena Haas
- Department of Diagnostic and Interventional Radiology, School of Medicine and Klinikum rechts der Isar , Technical University of Munich , Munich 81675 , Germany
| | - Miriam Stölting
- Translational Research Imaging Center, Department of Clinical Radiology , University Hospital Münster , Münster 48149 , Germany
| | - Michael Kuhlmann
- European Institute for Molecular Imaging , University Hospital Münster , Münster 48149 , Germany
| | - Christiane Geyer
- Translational Research Imaging Center, Department of Clinical Radiology , University Hospital Münster , Münster 48149 , Germany
| | - Sarah Glasl
- Institute of Biological and Medical Imaging , Helmholtz Zentrum München , Munich 85764 , Germany
| | - Michael Schäfers
- European Institute for Molecular Imaging , University Hospital Münster , Münster 48149 , Germany
| | - Vasilis Ntziachristos
- Institute of Biological and Medical Imaging , Helmholtz Zentrum München , Munich 85764 , Germany
| | - Moritz Wildgruber
- Department of Diagnostic and Interventional Radiology, School of Medicine and Klinikum rechts der Isar , Technical University of Munich , Munich 81675 , Germany.,Translational Research Imaging Center, Department of Clinical Radiology , University Hospital Münster , Münster 48149 , Germany
| | - Carsten Höltke
- Translational Research Imaging Center, Department of Clinical Radiology , University Hospital Münster , Münster 48149 , Germany
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21
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Notni J, Gassert FT, Steiger K, Sommer P, Weichert W, Rummeny EJ, Schwaiger M, Kessler H, Meier R, Kimm MA. Correction to: In vivo imaging of early stages of rheumatoid arthritis by α5β1-integrin-targeted positron emission tomography. EJNMMI Res 2019; 9:107. [PMID: 31828445 PMCID: PMC6906272 DOI: 10.1186/s13550-019-0582-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Affiliation(s)
- Johannes Notni
- Institute of Pathology, Technische Universität München, Trogerstr, 18, 81675, Munich, Germany.
| | - Florian T Gassert
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Munich, Germany
| | - Katja Steiger
- Institute of Pathology, Technische Universität München, Trogerstr, 18, 81675, Munich, Germany.,German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
| | - Peter Sommer
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Munich, Germany
| | - Wilko Weichert
- Institute of Pathology, Technische Universität München, Trogerstr, 18, 81675, Munich, Germany.,German Cancer Consortium (DKTK), Partner Site Munich, Munich, Germany
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Munich, Germany
| | - Markus Schwaiger
- Department of Nuclear Medicine, Technische Universität München, Munich, Germany
| | - Horst Kessler
- Institute for Advanced Study, Department of Chemistry, Technische Universität München, Garching, Germany
| | - Reinhard Meier
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Munich, Germany
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Munich, Germany
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22
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Busse M, Müller M, Kimm MA, Ferstl S, Allner S, Achterhold K, Herzen J, Pfeiffer F. 3D Imaging of Soft-Tissue Samples using an X-ray Specific Staining Method and Nanoscopic Computed Tomography. J Vis Exp 2019. [PMID: 31710040 DOI: 10.3791/60251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
We demonstrate a laboratory-based method combining X-ray microCT and nanoCT with a specific X-ray stain, which targets the cell cytoplasm. The described protocol is easy to apply, fast and suitable for larger soft-tissue samples. The presented methodology enables the characterization of crucial tissue structures in three dimensions and is demonstrated on a whole mouse kidney. The multiscale approach allows to image the entire mouse kidney and supports the selection of further volumes of interest, which are acquired with higher resolutions ranging into the nanometer range. Thereby, soft-tissue morphology with a similar detail level as the corresponding histological light microscopy images is reproduced. Deeper insights into the 3D configuration of tissue structures are achieved without impeding further investigations through histological methods.
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Affiliation(s)
- Madleen Busse
- Department of Physics and Munich School of BioEngineering, Technical University of Munich;
| | - Mark Müller
- Department of Physics and Munich School of BioEngineering, Technical University of Munich
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, School of Medicine and Klinikum rechts der Isar, Technical University of Munich
| | - Simone Ferstl
- Department of Physics and Munich School of BioEngineering, Technical University of Munich
| | - Sebastian Allner
- Department of Physics and Munich School of BioEngineering, Technical University of Munich
| | - Klaus Achterhold
- Department of Physics and Munich School of BioEngineering, Technical University of Munich
| | - Julia Herzen
- Department of Physics and Munich School of BioEngineering, Technical University of Munich
| | - Franz Pfeiffer
- Department of Physics and Munich School of BioEngineering, Technical University of Munich; Department of Diagnostic and Interventional Radiology, School of Medicine and Klinikum rechts der Isar, Technical University of Munich
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23
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Kimm MA, Gross C, Déan-Ben XL, Ron A, Rummeny EJ, Lin HCA, Höltke C, Razansky D, Wildgruber M. Optoacoustic properties of Doxorubicin - A pilot study. PLoS One 2019; 14:e0217576. [PMID: 31150471 PMCID: PMC6544257 DOI: 10.1371/journal.pone.0217576] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 05/14/2019] [Indexed: 12/20/2022] Open
Abstract
Doxorubicin (DOX) is a widely used chemotherapeutic anticancer drug. Its intrinsic fluorescence properties enable investigation of tumor response, drug distribution and metabolism. First phantom studies in vitro showed optoacoustic property of DOX. We therefore aimed to further investigate the optoacoustic properties of DOX in biological tissue in order to explore its potential as theranostic agent. We analysed doxorubicin hydrochloride (Dox·HCl) and liposomal encapsulated doxorubicin hydrochloride (Dox·Lipo), two common drugs for anti-cancer treatment in clinical medicine. Optoacoustic measurements revealed a strong signal of both doxorubicin substrates at 488 nm excitation wavelength. Post mortem analysis of intra-tumoral injections of DOX revealed a detectable optoacoustic signal even at three days after the injection. We thereby demonstrate the general feasibility of doxorubicin detection in biological tissue by means of optoacoustic tomography, which could be applied for high resolution imaging at mesoscopic depths dictated by effective penetration of visible light into the biological tissues.
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Affiliation(s)
- Melanie A. Kimm
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Munich, Germany
| | - Claudia Gross
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Munich, Germany
| | - Xose Luis Déan-Ben
- Faculty of Medicine and Institute of Pharmacology and Toxicology, University of Zürich, Zürich, Switzerland
- Institute for Biomedical Engineering and Department of Information Technology and Electrical Engineering, ETH Zürich, Zürich, Switzerland
| | - Avihai Ron
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München and Center for Translational Cancer Research, TranslaTUM, Munich, Germany
| | - Ernst J. Rummeny
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Munich, Germany
| | - Hsiao-Chun Amy Lin
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München and Center for Translational Cancer Research, TranslaTUM, Munich, Germany
| | - Carsten Höltke
- Translational Research Imaging Center, Department of Clinical Radiology, Universitätsklinikum Münster, Münster, Germany
| | - Daniel Razansky
- Faculty of Medicine and Institute of Pharmacology and Toxicology, University of Zürich, Zürich, Switzerland
- Institute for Biomedical Engineering and Department of Information Technology and Electrical Engineering, ETH Zürich, Zürich, Switzerland
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München and Center for Translational Cancer Research, TranslaTUM, Munich, Germany
| | - Moritz Wildgruber
- Translational Research Imaging Center, Department of Clinical Radiology, Universitätsklinikum Münster, Münster, Germany
- * E-mail:
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24
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Sauter AP, Hammel J, Ehn S, Achterhold K, Kopp FK, Kimm MA, Mei K, Laugerette A, Pfeiffer F, Rummeny EJ, Pfeiffer D, Noël PB. Perfusion-ventilation CT via three-material differentiation in dual-layer CT: a feasibility study. Sci Rep 2019; 9:5837. [PMID: 30967601 PMCID: PMC6456734 DOI: 10.1038/s41598-019-42330-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 03/28/2019] [Indexed: 01/30/2023] Open
Abstract
Dual-Energy Computed Tomography is of significant clinical interest due to the possibility of material differentiation and quantification. In current clinical routine, primarily two materials are differentiated, e.g., iodine and soft-tissue. A ventilation-perfusion-examination acquired within a single CT scan requires two contrast agents, e.g., xenon and gadolinium, and a three-material differentiation. In the current study, we have developed a solution for three-material differentiation for a ventilation-perfusion-examination. A landrace pig was examined using a dual-layer CT, and three scans were performed: (1) native; (2) xenon ventilation only; (3) xenon ventilation and gadolinium perfusion. An in-house developed algorithm was used to obtain xenon- and gadolinium-density maps. Firstly, lung tissue was segmented from other tissue. Consequently, a two-material decomposition was performed for lung tissue (xenon/soft-tissue) and for remaining tissue (gadolinium/soft-tissue). Results reveal that it was possible to differentiate xenon and gadolinium in a ventilation/perfusion scan of a pig, resulting in xenon and gadolinium density maps. By summation of both density maps, a three-material differentiation (xenon/gadolinium/soft tissue) can be performed and thus, xenon ventilation and gadolinium perfusion can be visualized in a single CT scan. In an additionally performed phantom study, xenon and gadolinium quantification showed very accurate results (r > 0.999 between measured and known concentrations).
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Affiliation(s)
- Andreas P Sauter
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany.
| | - Johannes Hammel
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
| | - Sebastian Ehn
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, Garching, Germany
| | - Klaus Achterhold
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, Garching, Germany
| | - Felix K Kopp
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
| | - Kai Mei
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
| | - Alexis Laugerette
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
| | - Franz Pfeiffer
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany.,Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, Garching, Germany.,Institute for Advanced Study, Technical University of Munich, Garching, Germany
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
| | - Daniela Pfeiffer
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
| | - Peter B Noël
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
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25
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Riederer I, Bar-Ness D, Kimm MA, Si-Mohamed S, Noël PB, Rummeny EJ, Douek P, Pfeiffer D. Liquid Embolic Agents in Spectral X-Ray Photon-Counting Computed Tomography using Tantalum K-Edge Imaging. Sci Rep 2019; 9:5268. [PMID: 30918297 PMCID: PMC6437141 DOI: 10.1038/s41598-019-41737-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 03/15/2019] [Indexed: 12/26/2022] Open
Abstract
The aim was to evaluate the potential of Spectral Photon-Counting Computed Tomography (SPCCT) to differentiate between liquid embolic agents and iodinated contrast medium by using tantalum-characteristic K-edge imaging. Tubes with a concentration series of tantalum and inserts with different concentrations of iodine were scanned with a preclinical SPCCT system. Tantalum density maps (TDM) and iodine density maps (IDM) were generated from a SPCCT acquisition. Furthermore, region-of-interest (ROI) analysis was performed within the tubes in the conventional CT, the TDM and IDM. TDM and IDM enable clear differentiation between both substances. Quantitative measurements of different tantalum concentrations match well with those of actually diluted mixtures. SPCCT allows for differentiation between tantalum and iodine and may enable for an improved follow-up diagnosis in patients after vascular occlusion therapy.
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Affiliation(s)
- Isabelle Riederer
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany. .,Department of Diagnostic and Interventional Neuroradiology, Technical University of Munich, School of Medicine, Munich, Germany.
| | - Daniel Bar-Ness
- University Claude Bernard Lyon 1, CREATIS, CNRS UMR 5220, INSERM U1206, INSA-Lyon, France.,Department of Interventional Radiology and Cardio-vascular and Thoracic Diagnostic Imaging, Louis Pradel University Hospital, Bron, France
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Salim Si-Mohamed
- University Claude Bernard Lyon 1, CREATIS, CNRS UMR 5220, INSERM U1206, INSA-Lyon, France.,Department of Interventional Radiology and Cardio-vascular and Thoracic Diagnostic Imaging, Louis Pradel University Hospital, Bron, France
| | - Peter B Noël
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Philippe Douek
- University Claude Bernard Lyon 1, CREATIS, CNRS UMR 5220, INSERM U1206, INSA-Lyon, France.,Department of Interventional Radiology and Cardio-vascular and Thoracic Diagnostic Imaging, Louis Pradel University Hospital, Bron, France
| | - Daniela Pfeiffer
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, School of Medicine, Munich, Germany
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26
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Gassert FT, Gassert FG, Topping GJ, Rummeny EJ, Wildgruber M, Meier R, Kimm MA. SNR analysis of contrast-enhanced MR imaging for early detection of rheumatoid arthritis. PLoS One 2019; 14:e0213082. [PMID: 30822342 PMCID: PMC6396898 DOI: 10.1371/journal.pone.0213082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 02/14/2019] [Indexed: 12/16/2022] Open
Abstract
Objective To investigate whether signal to noise (SNR) analysis of contrast-enhanced MRI gives additional benefit for early disease detection by Magnetic Resonance Imaging (MRI) of experimental rheumatoid arthritis (RA) in a small animal model. Methods We applied contrast-enhanced MRI at 7T in DBA mice with or without collagen-induced arthritis (CIA). Clinical score, OMERACT RAMRIS analysis and analysis of signal to noise ratios (SNR) of regions of interest in RA bearing mice, methotrexate/methylprednisolone acetate treated RA and control animals were compared with respect to benefit for early diagnosis. Results While treated RA and control animals did not show signs of RA activity in any of the above-mentioned scoring methods at any time point analyzed, RA animals revealed characteristic signs of RA in RAMRIS at the same time point when RA was detected clinically through scoring of the paws. The MR-based SNR analysis detected signs of synovitis, the earliest indication of RA, not only in late clinical stages, but also at an early stage when little or no clinical signs of RA were present in CIA animals and RAMRIS did not allow a distinct early detection. Conclusion SNR analysis of contrast-enhanced MR imaging provides additional benefit for early arthritis detection in CIA mice.
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Affiliation(s)
- Florian T. Gassert
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
| | - Felix G. Gassert
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
| | - Geoffrey J. Topping
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
| | - Ernst J. Rummeny
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
| | - Moritz Wildgruber
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
- Translational Research Imaging Center, Department of Clinical Radiology, Universitätsklinikum Muenster, Muenster, Germany
| | - Reinhard Meier
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
| | - Melanie A. Kimm
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universitaet Muenchen, Munich, Germany
- * E-mail:
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27
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Müller M, Kimm MA, Ferstl S, Allner S, Achterhold K, Herzen J, Pfeiffer F, Busse M. Nucleus-specific X-ray stain for 3D virtual histology. Sci Rep 2018; 8:17855. [PMID: 30552357 PMCID: PMC6294809 DOI: 10.1038/s41598-018-36067-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/12/2018] [Indexed: 11/18/2022] Open
Abstract
Histological investigations are indispensable with regards to the identification of structural tissue details but are limited to two-dimensional images, which are often visualized in one and the same plane for comparison reasons. Nondestructive three-dimensional technologies such as X-ray micro- and nanoCT have proven to provide valuable benefits for the understanding of anatomical structures as they allow visualization of structural details in 3D and from arbitrary viewing angles. Nevertheless, low attenuation of soft tissue has hampered their application in the field of 3D virtual histology. We present a hematein-based X-ray staining method that specifically targets the cell nuclei of cells, as demonstrated for a whole liver lobule of a mouse. Combining the novel staining protocol with the high resolving power of a recently developed nanoCT system enables the 3D visualization of tissue architecture in the nanometer range, thereby revealing the real 3D morphology and spatial distribution of the cell nuclei. Furthermore, our technique is compatible with conventional histology, as microscopic slides can be derived from the very same stained soft-tissue sample and further counter staining is possible. Thus, our methodology demonstrates future applicability for modern histopathology using laboratory X-ray CT devices.
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Affiliation(s)
- Mark Müller
- Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany.
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Simone Ferstl
- Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Sebastian Allner
- Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Klaus Achterhold
- Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Julia Herzen
- Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Franz Pfeiffer
- Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany.,Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Madleen Busse
- Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany.
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28
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Dangelmaier J, Bar-Ness D, Daerr H, Muenzel D, Si-Mohamed S, Ehn S, Fingerle AA, Kimm MA, Kopp FK, Boussel L, Roessl E, Pfeiffer F, Rummeny EJ, Proksa R, Douek P, Noël PB. Experimental feasibility of spectral photon-counting computed tomography with two contrast agents for the detection of endoleaks following endovascular aortic repair. Eur Radiol 2018; 28:3318-3325. [PMID: 29460069 PMCID: PMC6028848 DOI: 10.1007/s00330-017-5252-7] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/30/2017] [Accepted: 12/08/2017] [Indexed: 12/27/2022]
Abstract
Objectives After endovascular aortic repair (EVAR), discrimination of endoleaks and intra-aneurysmatic calcifications within the aneurysm often requires multiphase computed tomography (CT). Spectral photon-counting CT (SPCCT) in combination with a two-contrast agent injection protocol may provide reliable detection of endoleaks with a single CT acquisition. Methods To evaluate the feasibility of SPCCT, the stent-lined compartment of an abdominal aortic aneurysm phantom was filled with a mixture of iodine and gadolinium mimicking enhanced blood. To represent endoleaks of different flow rates, the adjacent compartments contained either one of the contrast agents or calcium chloride to mimic intra-aneurysmatic calcifications. After data acquisition with a SPCCT prototype scanner with multi-energy bins, material decomposition was performed to generate iodine, gadolinium and calcium maps. Results In a conventional CT slice, Hounsfield units (HU) of the compartments were similar ranging from 147 to 168 HU. Material-specific maps differentiate the distributions within the compartments filled with iodine, gadolinium or calcium. Conclusion SPCCT may replace multiphase CT to detect endoleaks without sacrificing diagnostic accuracy. It is a unique feature of our method to capture endoleak dynamics and allow reliable distinction from intra-aneurysmatic calcifications in a single scan, thereby enabling a significant reduction of radiation exposure. Key Points • SPCCT might enable advanced endoleak detection. • Material maps derived from SPCCT can differentiate iodine, gadolinium and calcium. • SPCCT may potentially reduce radiation burden for EVAR patients under post-interventional surveillance.
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Affiliation(s)
- Julia Dangelmaier
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaningerstr. 22, 81675, Munich, Germany.
| | | | - Heiner Daerr
- Philips GmbH Innovative Technologies, Research Laboratories, Hamburg, Germany
| | - Daniela Muenzel
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaningerstr. 22, 81675, Munich, Germany
| | - Salim Si-Mohamed
- CREATIS, CNRS UMR 5220, INSERM U1206, INSA, Lyon, France.,Radiology Department, Lyon University Hospital, Lyon, France.,University Lyon1 Claude Bernard, Lyon, France
| | - Sebastian Ehn
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technische Universität München, 85748 Garching, Germany
| | - Alexander A Fingerle
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaningerstr. 22, 81675, Munich, Germany
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaningerstr. 22, 81675, Munich, Germany
| | - Felix K Kopp
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaningerstr. 22, 81675, Munich, Germany
| | - Loic Boussel
- CREATIS, CNRS UMR 5220, INSERM U1206, INSA, Lyon, France.,Radiology Department, Lyon University Hospital, Lyon, France.,University Lyon1 Claude Bernard, Lyon, France
| | - Ewald Roessl
- Philips GmbH Innovative Technologies, Research Laboratories, Hamburg, Germany
| | - Franz Pfeiffer
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaningerstr. 22, 81675, Munich, Germany.,Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technische Universität München, 85748 Garching, Germany
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaningerstr. 22, 81675, Munich, Germany
| | - Roland Proksa
- Philips GmbH Innovative Technologies, Research Laboratories, Hamburg, Germany
| | - Philippe Douek
- CREATIS, CNRS UMR 5220, INSERM U1206, INSA, Lyon, France.,Radiology Department, Lyon University Hospital, Lyon, France.,University Lyon1 Claude Bernard, Lyon, France
| | - Peter B Noël
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaningerstr. 22, 81675, Munich, Germany.,Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technische Universität München, 85748 Garching, Germany
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29
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Martins de Souza E Silva J, Utsch J, Kimm MA, Allner S, Epple MF, Achterhold K, Pfeiffer F. Dual-energy micro-CT for quantifying the time-course and staining characteristics of ex-vivo animal organs treated with iodine- and gadolinium-based contrast agents. Sci Rep 2017; 7:17387. [PMID: 29234002 PMCID: PMC5727238 DOI: 10.1038/s41598-017-17064-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/20/2017] [Indexed: 01/12/2023] Open
Abstract
Chemical staining of soft-tissues can be used as a strategy to increase their low inherent contrast in X-ray absorption micro-computed tomography (micro-CT), allowing to obtain fast three-dimensional structural information of animal organs. Though some staining agents are commonly used in this context, little is known about the staining agents' ability to stain specific types of tissues; the times necessary to provide a sufficient contrast; and the effect of staining solution in distorting the tissue. Here we contribute to studies of animal organs (mouse heart and lungs) using staining combined with dual-energy micro-CT (DECT). DECT was used in order to obtain an additional quantitative measure for the amount of staining agents within the sample in 3D maps. Our results show that the two staining solutions used in this work diffuse differently in the tissues studied, the staining times of some tens of minutes already produce high-quality micro-CT images and, at the concentrations applied in this work, the staining solutions tested do not cause relevant tissue distortions. While one staining solution provides images of the general morphology of the organs, the other reveals organs' features in the order of a hundred micrometers.
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Affiliation(s)
- Juliana Martins de Souza E Silva
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany.
- Institute of Physics, Martin Luther University, Halle-Wittenberg, Germany.
| | - Julian Utsch
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technical University of Munich, 81675, München, Germany
| | - Sebastian Allner
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Michael F Epple
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Klaus Achterhold
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
| | - Franz Pfeiffer
- Chair of Biomedical Physics, Department of Physics and Munich School of BioEngineering, Technical University of Munich, 85748, Garching, Germany
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technical University of Munich, 81675, München, Germany
- Institute for Advanced Study, Technical University of Munich, 85748, Garching, Germany
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30
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Lin HCA, Déan-Ben XL, Ivankovic I, Kimm MA, Kosanke K, Haas H, Meier R, Lohöfer F, Wildgruber M, Razansky D. Characterization of Cardiac Dynamics in an Acute Myocardial Infarction Model by Four-Dimensional Optoacoustic and Magnetic Resonance Imaging. Theranostics 2017; 7:4470-4479. [PMID: 29158839 PMCID: PMC5695143 DOI: 10.7150/thno.20616] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 06/15/2017] [Indexed: 01/25/2023] Open
Abstract
Extraction of murine cardiac functional parameters on a beat-by-beat basis is limited with the existing imaging modalities due to insufficient three-dimensional temporal resolution. Faster volumetric imaging methods enabling in vivo characterization of functional parameters are poised to advance cardiovascular research and provide a better understanding of the mechanisms underlying cardiac diseases. We present a new approach based on analyzing contrast-enhanced optoacoustic (OA) images acquired at high volumetric frame rate without using cardiac gating or other approaches for motion correction. We apply an acute murine myocardial infarction model optimized for acquisition of artifact-free optoacoustic imaging data to study cardiovascular hemodynamics. Infarcted hearts (n = 21) could be clearly differentiated from healthy controls (n = 9) based on a significantly higher pulmonary transit time (PTT) (2.25 [2.00-2.41] s versus 1.34 [1.25-1.67] s, p = 0.0235), while no statistically significant difference was observed in the heart rate (318 [252-361] bpm versus 264 [252-320] bpm, p = 0.3129). Nevertheless, nonlinear heartbeat dynamics was stronger in the healthy hearts, as evidenced by the third harmonic component in the heartbeat spectra. MRI data acquired from the same mice further revealed that the PTT increases with the size of infarction and similarly increases with reduced ejection fraction. Moreover, an inverse relationship between infarct PTT and time post-surgery was found, which suggests the occurrence of cardiac healing. In combination with the proven ability of optoacoustics to track targeted probes within the injured myocardium, our method can depict cardiac anatomy, function, and molecular signatures, with both high spatial and temporal resolution. Volumetric four-dimensional optoacoustic characterization of cardiac dynamics with supreme temporal resolution can capture cardiovascular dynamics on a beat-by-beat basis in mouse models of myocardial ischemia.
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31
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Berninger MT, Mohajerani P, Wildgruber M, Beziere N, Kimm MA, Ma X, Haller B, Fleming MJ, Vogt S, Anton M, Imhoff AB, Ntziachristos V, Meier R, Henning TD. Detection of intramyocardially injected DiR-labeled mesenchymal stem cells by optical and optoacoustic tomography. Photoacoustics 2017; 6:37-47. [PMID: 28540184 PMCID: PMC5430154 DOI: 10.1016/j.pacs.2017.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 04/17/2017] [Accepted: 04/28/2017] [Indexed: 05/10/2023]
Abstract
The distribution of intramyocardially injected rabbit MSCs, labeled with the near-infrared dye 1,1'-dioctadecyl-3,3,3',3'-tetramethylindotricarbo-cyanine-iodide (DiR) using hybrid Fluorescence Molecular Tomography-X-ray Computed Tomography (FMT-XCT) and Multispectral Optoacoustic Tomography (MSOT) imaging technologies, was investigated. Viability and induction of apoptosis of DiR labeled MSCs were assessed by XTT- and Caspase-3/-7-testing in vitro. 2 × 106, 2 × 105 and 2 × 104 MSCs labeled with 5 and 10 μg DiR/ml were injected into fresh frozen rabbit hearts. FMT-XCT, MSOT and fluorescence cryosection imaging were performed. Concentrations up to 10 μg DiR/ml did not cause apoptosis in vitro (p > 0.05). FMT and MSOT imaging of labeled MSCs led to a strong signal. The imaging modalities highlighted a difference in cell distribution and concentration correlated to the number of injected cells. Ex-vivo cryosectioning confirmed the molecular fluorescence signal. FMT and MSOT are sensitive imaging techniques offering high-anatomic resolution in terms of detection and distribution of intramyocardially injected stem cells in a rabbit model.
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Affiliation(s)
- Markus T. Berninger
- Department of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
- Department of Trauma and Orthopaedic Surgery, BG Unfallklinik Murnau, Murnau, Germany
- Corresponding author at: Department of Trauma and Orthopaedic Surgery, BG Unfallklinik Murnau, Prof.-Küntscher-Strasse 8, 82418, Murnau, Germany.
| | - Pouyan Mohajerani
- Institute for Biological and Medical Imaging, Technische Universität München und Helmholtz Zentrum München, Neuherberg, Germany
| | - Moritz Wildgruber
- Department of Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Nicolas Beziere
- Institute for Biological and Medical Imaging, Technische Universität München und Helmholtz Zentrum München, Neuherberg, Germany
| | - Melanie A. Kimm
- Department of Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Xiaopeng Ma
- Institute for Biological and Medical Imaging, Technische Universität München und Helmholtz Zentrum München, Neuherberg, Germany
| | - Bernhard Haller
- Institute for Medical Statistics and Epidemiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Megan J. Fleming
- Department of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Stephan Vogt
- Department of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Martina Anton
- Institute for Experimental Oncology and Therapy Research and Institute of Molecular Immunology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Andreas B. Imhoff
- Department of Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Vasilis Ntziachristos
- Institute for Biological and Medical Imaging, Technische Universität München und Helmholtz Zentrum München, Neuherberg, Germany
| | - Reinhard Meier
- Department of Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
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32
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Glinzer A, Ma X, Prakash J, Kimm MA, Lohöfer F, Kosanke K, Pelisek J, Thon MP, Vorlova S, Heinze KG, Eckstein HH, Gee MW, Ntziachristos V, Zernecke A, Wildgruber M. Targeting Elastase for Molecular Imaging of Early Atherosclerotic Lesions. Arterioscler Thromb Vasc Biol 2016; 37:525-533. [PMID: 28062502 DOI: 10.1161/atvbaha.116.308726] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 12/21/2016] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Neutrophils accumulate in early atherosclerotic lesions and promote lesion growth. In this study, we evaluated an elastase-specific near-infrared imaging agent for molecular imaging using hybrid fluorescence molecular tomography/x-ray computed tomography. APPROACH AND RESULTS Murine neutrophils were isolated from bone marrow and incubated with the neutrophil-targeted near-infrared imaging agent Neutrophil Elastase 680 FAST for proof of principle experiments, verifying that the elastase-targeted fluorescent agent is specifically cleaved and activated by neutrophil content after lysis or cell stimulation. For in vivo experiments, low-density lipoprotein receptor-deficient mice were placed on a Western-type diet and imaged after 4, 8, and 12 weeks by fluorescence molecular tomography/x-ray computed tomography. Although this agent remains silent on injection, it produces fluorescent signal after cleavage by neutrophil elastase. After hybrid fluorescence molecular tomography/x-ray computed tomography imaging, mice were euthanized for whole-body cryosectioning and histological analyses. The in vivo fluorescent signal in the area of the aortic arch was highest after 4 weeks of high-fat diet feeding and decreased at 8 and 12 weeks. Ex vivo whole-body cryoslicing confirmed the fluorescent signal to locate to the aortic arch and to originate from the atherosclerotic arterial wall. Histological analysis demonstrated the presence of neutrophils in atherosclerotic lesions. CONCLUSIONS This study provides evidence that elastase-targeted imaging can be used for in vivo detection of early atherosclerosis. This imaging approach may harbor potential in the clinical setting for earlier diagnosis and treatment of atherosclerosis.
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Affiliation(s)
- Almut Glinzer
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Xiaopeng Ma
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Jaya Prakash
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Melanie A Kimm
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Fabian Lohöfer
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Katja Kosanke
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Jaroslav Pelisek
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Moritz P Thon
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Sandra Vorlova
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Katrin G Heinze
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Hans-Henning Eckstein
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Michael W Gee
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Vasilis Ntziachristos
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Alma Zernecke
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.)
| | - Moritz Wildgruber
- From the Institut für diagnostische und interventionelle Radiologie, Klinikum rechts der Isar (A.G., M.A.K., F.L., K.K., M.W.), Klinik für vaskuläre und endovaskuläre Chirurgie, Klinikum rechts der Isar (A.G., J. Pelisek, H.-H.E.), Mechanics & High Performance Computing Group (M.P.T., M.W.G.), and Chair of Biological Imaging, Klinikum Rechts der Isar (V.N.), Technische Universität München, Germany; Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany (X.M., J. Prakash, V.N.); Institut für Experimentelle Biomedizin, Universitätsklinikum Würzburg, Germany (S.V., A.Z.); Rudolf Virchow Zentrum, Universität Würzburg, Germany (K.G.H.); and Translational Research Imaging Center, Universitätsklinikum Münster, Germany (M.W.).
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Ma X, Phi Van V, Kimm MA, Prakash J, Kessler H, Kosanke K, Feuchtinger A, Aichler M, Gupta A, Rummeny EJ, Eisenblätter M, Siveke J, Walch AK, Braren R, Ntziachristos V, Wildgruber M. Integrin-Targeted Hybrid Fluorescence Molecular Tomography/X-ray Computed Tomography for Imaging Tumor Progression and Early Response in Non-Small Cell Lung Cancer. Neoplasia 2016; 19:8-16. [PMID: 27940248 PMCID: PMC5157790 DOI: 10.1016/j.neo.2016.11.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 11/14/2016] [Accepted: 11/14/2016] [Indexed: 11/05/2022] Open
Abstract
Integrins play an important role in tumor progression, invasion and metastasis. Therefore we aimed to evaluate a preclinical imaging approach applying ανβ3 integrin targeted hybrid Fluorescence Molecular Tomography/X-ray Computed Tomography (FMT-XCT) for monitoring tumor progression as well as early therapy response in a syngeneic murine Non-Small Cell Lung Cancer (NSCLC) model. Lewis Lung Carcinomas were grown orthotopically in C57BL/6 J mice and imaged in-vivo using a ανβ3 targeted near-infrared fluorescence (NIRF) probe. ανβ3-targeted FMT-XCT was able to track tumor progression. Cilengitide was able to substantially block the binding of the NIRF probe and suppress the imaging signal. Additionally mice were treated with an established chemotherapy regimen of Cisplatin and Bevacizumab or with a novel MEK inhibitor (Refametinib) for 2 weeks. While μCT revealed only a moderate slowdown of tumor growth, ανβ3 dependent signal decreased significantly compared to non-treated mice already at one week post treatment. ανβ3 targeted imaging might therefore become a promising tool for assessment of early therapy response in the future.
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Affiliation(s)
- Xiaopeng Ma
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Valerie Phi Van
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Melanie A Kimm
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Jaya Prakash
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Horst Kessler
- Chemistry Department and TUM Institute for Advanced Study, Lichtenbergstrasse 2a, D-85748, Garching, Germany
| | - Katja Kosanke
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Aayush Gupta
- Department of Internal Medicine II, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Ernst J Rummeny
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Michel Eisenblätter
- Department of Clinical Radiology, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, D-48149, Münster, Germany
| | - Jens Siveke
- Department of Internal Medicine II, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany; German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, D-69120, Heidelberg, Germany; Division of Solid Tumor Translational Oncology, German Cancer Consortium (DKTK), partner site Essen, University Hospital Essen, Hufelandstraße 55, D-45147 Essen, Germany
| | - Axel K Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Rickmer Braren
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Vasilis Ntziachristos
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Moritz Wildgruber
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany; Department of Clinical Radiology, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, D-48149, Münster, Germany.
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Richter V, Willner MS, Henningsen J, Birnbacher L, Marschner M, Herzen J, Kimm MA, Noël PB, Rummeny EJ, Pfeiffer F, Fingerle AA. Ex vivo characterization of pathologic fluids with quantitative phase-contrast computed tomography. Eur J Radiol 2016; 86:99-104. [PMID: 28027773 DOI: 10.1016/j.ejrad.2016.11.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 10/04/2016] [Accepted: 11/06/2016] [Indexed: 11/25/2022]
Abstract
PURPOSE X-ray phase-contrast imaging (PCI) provides additional information beyond absorption characteristics by detecting the phase shift of the X-ray beam passing through material. The grating-based system works with standard polychromatic X-ray sources, promising a possible clinical implementation. PCI has been shown to provide additional information in soft-tissue samples. The aim of this study was to determine if ex vivo quantitative phase-contrast computed tomography (PCCT) may differentiate between pathologic fluid collections. MATERIALS AND METHODS PCCT was performed with the grating interferometry method. A protein serial dilution, human blood samples and 17 clinical samples of pathologic fluid retentions were imaged and correlated with clinical chemistry measurements. Conventional and phase-contrast tomography images were reconstructed. Phase-contrast Hounsfield Units (HUp) were used for quantitative analysis analogously to conventional HU. The imaging was analyzed using overall means, ROI values as well as whole-volume-histograms and vertical gradients. Contrast to noise ratios were calculated between different probes and between imaging methods. RESULTS HUp showed a very good linear correlation with protein concentration in vitro. In clinical samples, HUp correlated rather well with cell count and triglyceride content. PCI was better than absorption imaging at differentiating protein concentrations in the protein samples as well as at differentiating blood plasma from cellular components. PCI also allowed for differentiation of watery samples (such as lymphoceles) from pus. CONCLUSION Phase-contrast computed tomography is a promising tool for the differentiation of pathologic fluids that appear homogenous with conventional attenuation imaging.
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Affiliation(s)
- Vivien Richter
- Department of Diagnostic and Interventional Radiology, Eberhard Karls Universität Tübingen, Hoppe-Seyler-Weg 3, 72076 Tuebingen, Germany.
| | - Marian S Willner
- Department of Physics & Institute of Medical Engineering, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
| | - John Henningsen
- Department of Physics & Institute of Medical Engineering, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
| | - Lorenz Birnbacher
- Department of Physics & Institute of Medical Engineering, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
| | - Mathias Marschner
- Department of Physics & Institute of Medical Engineering, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
| | - Julia Herzen
- Department of Physics & Institute of Medical Engineering, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaninger Str. 22, 81675 Munich, Germany.
| | - Peter B Noël
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaninger Str. 22, 81675 Munich, Germany.
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaninger Str. 22, 81675 Munich, Germany.
| | - Franz Pfeiffer
- Department of Physics & Institute of Medical Engineering, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany.
| | - Alexander A Fingerle
- Department of Diagnostic and Interventional Radiology, Technische Universität München, Ismaninger Str. 22, 81675 Munich, Germany.
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Gehrmann MK, Kimm MA, Stangl S, Schmid TE, Noël PB, Rummeny EJ, Multhoff G. Imaging of Hsp70-positive tumors with cmHsp70.1 antibody-conjugated gold nanoparticles. Int J Nanomedicine 2015; 10:5687-700. [PMID: 26392771 PMCID: PMC4572731 DOI: 10.2147/ijn.s87174] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Real-time imaging of small tumors is still one of the challenges in cancer diagnosis, prognosis, and monitoring of clinical outcome. Targeting novel biomarkers that are selectively expressed on a large variety of different tumors but not normal cells has the potential to improve the imaging capacity of existing methods such as computed tomography. Herein, we present a novel technique using cmHsp70.1 monoclonal antibody-conjugated spherical gold nanoparticles for quantification of the targeted uptake of gold nanoparticles into membrane Hsp70-positive tumor cells. Upon binding, cmHsp70.1-conjugated gold nanoparticles but not nanoparticles coupled to an isotype-matched IgG1 antibody or empty nanoparticles are rapidly taken up by highly malignant Hsp70 membrane-positive mouse tumor cells. After 24 hours, the cmHsp70.1-conjugated gold nanoparticles are found to be enriched in the perinuclear region. Specificity for membrane Hsp70 was shown by using an Hsp70 knockout tumor cell system. Toxic side effects of the cmHsp70.1-conjugated nanoparticles are not observed at a concentration of 1–10 µg/mL. Experiments are ongoing to evaluate whether cmHsp70.1 antibody-conjugated gold nanoparticles are suitable for the detection of membrane-Hsp70-positive tumors in vivo.
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Affiliation(s)
- Mathias K Gehrmann
- Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Melanie A Kimm
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Stefan Stangl
- Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Thomas E Schmid
- Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Peter B Noël
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Ernst J Rummeny
- Department of Diagnostic and Interventional Radiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Gabriele Multhoff
- Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
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Meier R, Beer AJ, Kimm MA, Krönig H, Settles M, Rummeny EJ, Bernhard H. MR-Monitoring von Antigen-spezifischen humanen zytotoxischen T-Lymphozyten mittels Markierung mit superparamagnetischen Eisenoxiden. ROFO-FORTSCHR RONTG 2009. [DOI: 10.1055/s-0029-1221744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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37
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Theodorou V, Kimm MA, Boer M, Wessels L, Theelen W, Jonkers J, Hilkens J. MMTV insertional mutagenesis identifies genes, gene families and pathways involved in mammary cancer. Nat Genet 2007; 39:759-69. [PMID: 17468756 DOI: 10.1038/ng2034] [Citation(s) in RCA: 151] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2006] [Accepted: 03/29/2007] [Indexed: 01/02/2023]
Abstract
We performed a high-throughput retroviral insertional mutagenesis screen in mouse mammary tumor virus (MMTV)-induced mammary tumors and identified 33 common insertion sites, of which 17 genes were previously not known to be associated with mammary cancer and 13 had not previously been linked to cancer in general. Although members of the Wnt and fibroblast growth factors (Fgf) families were frequently tagged, our exhaustive screening for MMTV insertion sites uncovered a new repertoire of candidate breast cancer oncogenes. We validated one of these genes, Rspo3, as an oncogene by overexpression in a p53-deficient mammary epithelial cell line. The human orthologs of the candidate oncogenes were frequently deregulated in human breast cancers and associated with several tumor parameters. Computational analysis of all MMTV-tagged genes uncovered specific gene families not previously associated with cancer and showed a significant overrepresentation of protein domains and signaling pathways mainly associated with development and growth factor signaling. Comparison of all tagged genes in MMTV and Moloney murine leukemia virus-induced malignancies showed that both viruses target mostly different genes that act predominantly in distinct pathways.
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MESH Headings
- Animals
- Cell Transformation, Neoplastic
- Epithelium/metabolism
- Female
- Gene Expression
- Gene Expression Regulation, Neoplastic
- Genes, Neoplasm/genetics
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/metabolism
- Mammary Neoplasms, Experimental/pathology
- Mammary Tumor Virus, Mouse/genetics
- Mice
- Mice, Inbred BALB C
- Multigene Family/genetics
- Mutagenesis, Insertional/genetics
- Oncogenic Viruses/genetics
- RNA, Messenger/metabolism
- Signal Transduction
- Tumor Suppressor Protein p53/genetics
- Tumor Suppressor Protein p53/metabolism
- Virus Integration
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Affiliation(s)
- Vassiliki Theodorou
- Division of Molecular Genetics, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
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