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Mathur R, Elsafy S, Press AT, Brück J, Hornef M, Martin L, Schürholz T, Marx G, Bartneck M, Kiessling F, Metselaar JM, Storm G, Lammers T, Sofias AM, Koczera P. Neutrophil Hitchhiking Enhances Liposomal Dexamethasone Therapy of Sepsis. ACS NANO 2024. [PMID: 39393087 DOI: 10.1021/acsnano.4c09054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2024]
Abstract
Sepsis is characterized by a dysregulated immune response and is very difficult to treat. In the cecal ligation and puncture (CLP) mouse model, we show that nanomedicines can effectively alleviate systemic and local septic events by targeting neutrophils. Specifically, by decorating the surface of clinical-stage dexamethasone liposomes with cyclic arginine-glycine-aspartic acid (cRGD) peptides, we promote their engagement with neutrophils in the systemic circulation, leading to their prominent accumulation at primary and secondary sepsis sites. cRGD-targeted dexamethasone liposomes potently reduce immature circulating neutrophils and neutrophil extracellular traps in intestinal sepsis induction sites and the liver. Additionally, they mitigate inflammatory cytokines systemically and locally while preserving systemic IL-10 levels, contributing to lower IFN-γ/IL-10 ratios as compared to control liposomes and free dexamethasone. Our strategy addresses sepsis at the cellular level, illustrating the use of neutrophils both as a therapeutic target and as a chariot for drug delivery.
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Affiliation(s)
- Ritvik Mathur
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Sara Elsafy
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Adrian T Press
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena 07747, Germany
- Medical Faculty, Friedrich-Schiller-University, Jena 07747, Germany
| | - Julian Brück
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Mathias Hornef
- Institute of Medical Microbiology, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Lukas Martin
- Department of Intensive and Intermediate Care Medicine, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Tobias Schürholz
- Department of Intensive and Intermediate Care Medicine, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Gernot Marx
- Department of Intensive and Intermediate Care Medicine, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Matthias Bartneck
- Department of Medicine III, Medical Faculty, RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Josbert Maarten Metselaar
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Gert Storm
- Department of Pharmaceutics, Faculty of Science, Utrecht University, Utrecht 3584 CG, The Netherlands
| | - Twan Lammers
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen 52074, Germany
- Center for Integrated Oncology Aachen (CIOA), RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Alexandros Marios Sofias
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen 52074, Germany
- Center for Integrated Oncology Aachen (CIOA), RWTH Aachen University Hospital, Aachen 52074, Germany
| | - Patrick Koczera
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen 52074, Germany
- Department of Intensive and Intermediate Care Medicine, RWTH Aachen University Hospital, Aachen 52074, Germany
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2
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Wang Y, Hang K, Wu X, Ying L, Wang Z, Ling Z, Hu H, Pan Z, Zou X. SLAMF8 regulates osteogenesis and adipogenesis of bone marrow mesenchymal stem cells via S100A6/Wnt/β-catenin signaling pathway. Stem Cell Res Ther 2024; 15:349. [PMID: 39380096 PMCID: PMC11462740 DOI: 10.1186/s13287-024-03964-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 09/29/2024] [Indexed: 10/10/2024] Open
Abstract
BACKGROUND The inflammatory microenvironment plays an essential role in bone healing after fracture. The signaling lymphocytic activation molecule family (SLAMF) members deeply participate in inflammatory response and make a vast difference. METHODS We identified SLAMF8 in GEO datasets (GSE129165 and GSE176086) and co-expression analyses were performed to define the relationships between SLAMF8 and osteogenesis relative genes (RUNX2 and COL1A1). In vitro, we established SLAMF8 knockdown and overexpression mouse bone marrow mesenchymal stem cells (mBMSCs) lines. qPCR, Western blot, ALP staining, ARS staining, Oil Red O staining and Immunofluorescence analyses were performed to investigate the effect of SLAMF8 in mBMSCs osteogenesis and adipogenesis. In vivo, mice femoral fracture model was performed to explore the function of SLAMF8. RESULTS SLAMF8 knockdown significantly suppressed the expression of osteogenesis relative genes (RUNX2, SP7 and COL1A1), ALP activity and mineral deposition, but increased the expression of adipogenesis relative genes (PPARγ and C/EBPα). Additionally, SLAMF8 overexpression had the opposite effects. The role SLAMF8 played in mBMSCs osteogenic and adipogenic differentiation were through S100A6 and Wnt/β-Catenin signaling pathway. Moreover, SLAMF8 overexpression mBMSCs promoted the healing of femoral fracture. CONCLUSIONS SLAMF8 promotes osteogenesis and inhibits adipogenesis of mBMSCs via S100A6 and Wnt/β-Catenin signaling pathway. SLAMF8 overexpression mBMSCs effectively accelerate the healing of femoral fracture in mice.
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Affiliation(s)
- Yibo Wang
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Department of Spinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Kai Hang
- Department of Orthopaedics, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, China
| | - Xiaoyong Wu
- Department of Orthopedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, Hangzhou, 310009, China
| | - Li Ying
- Department of Orthopedic, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, 317000, China
| | - Zhongxiang Wang
- Department of Orthopedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, Hangzhou, 310009, China
| | - Zemin Ling
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Department of Spinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
- Department of Orthopedics, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, 518107, China
| | - Hao Hu
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Department of Spinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Zhijun Pan
- Department of Orthopedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China.
- Orthopedics Research Institute of Zhejiang University, Hangzhou, 310009, China.
| | - Xuenong Zou
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Department of Spinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.
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Ho KV, Tatum DS, Watkinson L, Carmack T, Jia F, Mascioni A, Maitz CA, Magda D, Anderson CJ. Single Chelator-Minibody Theranostic Agents for 89Zr PET Imaging and 177Lu Radiopharmaceutical Therapy of PSMA-Expressing Prostate Cancer. J Nucl Med 2024; 65:1435-1442. [PMID: 39142831 PMCID: PMC11372255 DOI: 10.2967/jnumed.124.267667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 06/19/2024] [Indexed: 08/16/2024] Open
Abstract
Here we describe an anti-prostate-specific membrane antigen (PSMA) minibody (IAB2MA) conjugated to an octadentate, macrocyclic chelator based on four 1-hydroxypyridin-2-one coordinating units (Lumi804 [L804]) labeled with 89Zr (PET imaging) and 177Lu (radiopharmaceutical therapy), with the goal of developing safer and more efficacious treatment options for prostate cancer. Methods: L804 was compared with the current gold standard chelators, DOTA and deferoxamine (DFO), conjugated to IAB2MA for radiolabeling with 177Lu and 89Zr in cell binding, preclinical biodistribution, imaging, dosimetry, and efficacy studies in the PSMA-positive PC3-PIP tumor-bearing mouse model of prostate cancer. Results: Quantitative radiolabeling (>99% radiochemical yield) of L804-IAB2MA with 177Lu or 89Zr was achieved at ambient temperature in under 30 min, comparable to 89Zr labeling of DFO-IAB2MA. In contrast, DOTA-IAB2MA was radiolabeled with 177Lu for 30 min at 37°C in approximately 90% radiochemical yield, requiring further purification. Using europium(III) as a luminescent surrogate, high binding affinity of Eu-L804-IAB2MA to PSMA was demonstrated in PC3-PIP cells (dissociation constant, 4.6 ± 0.6 nM). All 4 radiolabeled constructs showed significantly higher levels of internalization after 30 min in the PC3-PIP cells than in PSMA-negative PC3-FLU cells. The accumulation of 177Lu- and 89Zr-L804-IAB2MA in PC3-PIP tumors and all organs examined (i.e., heart, liver, spleen, kidney, muscle, salivary glands, lacrimal glands, carcass, and bone) was significantly lower than that of 177Lu-DOTA-IAB2MA and 89Zr-DFO-IAB2MA at 96 and 72 h after injection, respectively. Generally, SPECT/CT and PET/CT imaging data showed no significant difference in the SUVmean of the tumors or muscle between the radiotracers. Dosimetry analysis via both organ-level and voxel-level dose calculation methods indicated significantly higher absorbed doses of 177Lu-DOTA-IAB2MA in tumors, kidney, liver, muscle, and spleen than of 177Lu-L804-IAB2MA. PC3-PIP tumor-bearing mice treated with single doses of 177Lu-L804-IAB2MA (18.4 or 22.2 MBq) exhibited significantly prolonged survival and reduced tumor volume compared with unlabeled minibody control. No significant difference in survival was observed between groups of mice treated with 177Lu-L804-IAB2MA or 177Lu-DOTA-IAB2MA (18.4 or 22.2 MBq). Treatment with 177Lu-L804-IAB2MA resulted in lower absorbed doses in tumors and less toxicity than that of 177Lu-DOTA-IAB2MA. Conclusion: 89Zr- and 177Lu-L804-IAB2MA may be a promising theranostic pair for imaging and therapy of prostate cancer.
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Affiliation(s)
- Khanh-Van Ho
- Department of Chemistry, University of Missouri, Columbia, Missouri
- Molecular Imaging and Theranostics Center, University of Missouri, Columbia, Missouri
| | | | - Lisa Watkinson
- Molecular Imaging and Theranostics Center, University of Missouri, Columbia, Missouri
- Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, Missouri
| | - Terry Carmack
- Molecular Imaging and Theranostics Center, University of Missouri, Columbia, Missouri
- Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, Missouri
| | - Fang Jia
- ImaginAb Inc., Inglewood, California
| | | | - Charles A Maitz
- Department of Veterinary Medicine and Surgery, University of Missouri, Columbia, Missouri
- MU Research Reactor, University of Missouri, Columbia, Missouri
| | | | - Carolyn J Anderson
- Department of Chemistry, University of Missouri, Columbia, Missouri;
- Molecular Imaging and Theranostics Center, University of Missouri, Columbia, Missouri
- Department of Radiology, University of Missouri, Columbia, Missouri; and
- Ellis Fischel Cancer Center, University of Missouri, Columbia, Missouri
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4
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Koczera P, Thomas F, Rama E, Thoröe-Boveleth S, Kiessling F, Lammers T, Herres-Pawlis S. Microbubble-encapsulated Cobalt Nitrato Complexes for Ultrasound-triggerable Nitric Oxide Delivery. ChemMedChem 2024; 19:e202400232. [PMID: 38747628 DOI: 10.1002/cmdc.202400232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/09/2024] [Indexed: 07/22/2024]
Abstract
Cobalt complexes exhibit versatile reactivity with nitric oxide (NO), enabling their utilization in applications ranging from homogeneous catalysis to NO-based modulation of biological processes. However, the coordination geometry around the cobalt center is complex, the therapeutic window of NO is narrow, and controlled NO delivery is difficult. To better understand the complexation of cobalt with NO, we prepared four cobalt nitrato complexes and present a structure-property relationship for ultrasound-triggerable NO release. We hypothesized that modulation of the coordination geometry by ligand-modification would improve responsiveness to mechanical stimuli, like ultrasound. To enable eventual therapeutic testing, we here first demonstrate the in vitro tolerability of [Co(ethylenediamine)2(NO)(NO3)](NO3) in A431 epidermoid carcinoma cells and J774A.1 murine macrophages, and we subsequently show successful encapsulation of the complex in poly(butyl cyanoacrylate) microbubbles. These hybrid Co-NO-containing microbubbles may in the future aid in ultrasound imaging-guided treatment of NO-responsive vascular pathologies.
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Affiliation(s)
- Patrick Koczera
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Fabian Thomas
- Institute of Inorganic Chemistry, RWTH Aachen University, Aachen, Germany
| | - Elena Rama
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Sven Thoröe-Boveleth
- Institute for Occupational, Social and Environmental Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Twan Lammers
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
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5
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Kaag Rasmussen M, Møllgård K, Bork PAR, Weikop P, Esmail T, Drici L, Wewer Albrechtsen NJ, Carlsen JF, Huynh NPT, Ghitani N, Mann M, Goldman SA, Mori Y, Chesler AT, Nedergaard M. Trigeminal ganglion neurons are directly activated by influx of CSF solutes in a migraine model. Science 2024; 385:80-86. [PMID: 38963846 DOI: 10.1126/science.adl0544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 05/01/2024] [Indexed: 07/06/2024]
Abstract
Classical migraine patients experience aura, which is transient neurological deficits associated with cortical spreading depression (CSD), preceding headache attacks. It is not currently understood how a pathological event in cortex can affect peripheral sensory neurons. In this study, we show that cerebrospinal fluid (CSF) flows into the trigeminal ganglion, establishing nonsynaptic signaling between brain and trigeminal cells. After CSD, ~11% of the CSF proteome is altered, with up-regulation of proteins that directly activate receptors in the trigeminal ganglion. CSF collected from animals exposed to CSD activates trigeminal neurons in naïve mice in part by CSF-borne calcitonin gene-related peptide (CGRP). We identify a communication pathway between the central and peripheral nervous system that might explain the relationship between migrainous aura and headache.
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Affiliation(s)
- Martin Kaag Rasmussen
- Center for Translational Neuromedicine, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Kjeld Møllgård
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Peter A R Bork
- Center for Translational Neuromedicine, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Pia Weikop
- Center for Translational Neuromedicine, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Tina Esmail
- Center for Translational Neuromedicine, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Lylia Drici
- NNF Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Nicolai J Wewer Albrechtsen
- NNF Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Department for Clinical Biochemistry, University Hospital Copenhagen - Bispebjerg, Copenhagen, 2400 Copenhagen, Denmark
| | - Jonathan Frederik Carlsen
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Radiology, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark
| | - Nguyen P T Huynh
- Center for Translational Neuromedicine, Division of Glial Disease and Therapeutics, University of Rochester Medical Center, Rochester, NY 14642, USA
- Sana Biotechnology, Cambridge, MA 02139, USA
| | - Nima Ghitani
- National Center for Complementary and Integrative Health (NCCIH), Bethesda, MD 20892, USA
| | - Matthias Mann
- NNF Center for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Proteomics and Signal Transduction, Max-Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Steven A Goldman
- Center for Translational Neuromedicine, University of Copenhagen, 2200 Copenhagen, Denmark
- Center for Translational Neuromedicine, Division of Glial Disease and Therapeutics, University of Rochester Medical Center, Rochester, NY 14642, USA
- Sana Biotechnology, Cambridge, MA 02139, USA
| | - Yuki Mori
- Center for Translational Neuromedicine, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Alexander T Chesler
- National Center for Complementary and Integrative Health (NCCIH), Bethesda, MD 20892, USA
- National Institute of Neurological Disorders and Stroke, Bethesda, MD 20892, USA
| | - Maiken Nedergaard
- Center for Translational Neuromedicine, University of Copenhagen, 2200 Copenhagen, Denmark
- Center for Translational Neuromedicine, Division of Glial Disease and Therapeutics, University of Rochester Medical Center, Rochester, NY 14642, USA
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6
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Schraven S, Brück R, Rosenhain S, Lemainque T, Heines D, Noormohammadian H, Pabst O, Lederle W, Gremse F, Kiessling F. CT- and MRI-Aided Fluorescence Tomography Reconstructions for Biodistribution Analysis. Invest Radiol 2024; 59:504-512. [PMID: 38038691 DOI: 10.1097/rli.0000000000001052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
OBJECTIVES Optical fluorescence imaging can track the biodistribution of fluorophore-labeled drugs, nanoparticles, and antibodies longitudinally. In hybrid computed tomography-fluorescence tomography (CT-FLT), CT provides the anatomical information to generate scattering and absorption maps supporting a 3-dimensional reconstruction from the raw optical data. However, given the CT's limited soft tissue contrast, fluorescence reconstruction and quantification can be inaccurate and not sufficiently detailed. Magnetic resonance imaging (MRI) can overcome these limitations and extend the options for tissue characterization. Thus, we aimed to establish a hybrid CT-MRI-FLT approach for whole-body imaging and compared it with CT-FLT. MATERIALS AND METHODS The MRI-based hybrid imaging approaches were established first by scanning a water and coconut oil-filled phantom, second by quantifying Cy7 concentrations of inserts in dead mice, and finally by analyzing the biodistribution of AF750-labeled immunoglobulins (IgG, IgA) in living SKH1 mice. Magnetic resonance imaging, acquired with a fat-water-separated mDixon sequence, CT, and FLT were co-registered using markers in the mouse holder frame filled with white petrolatum, which was solid, stable, and visible in both modalities. RESULTS Computed tomography-MRI fusion was confirmed by comparing the segmentation agreement using Dice scores. Phantom segmentations showed good agreement, after correction for gradient linearity distortion and chemical shift. Organ segmentations in dead and living mice revealed adequate agreement for fusion. Marking the mouse holder frame and the successful CT-MRI fusion enabled MRI-FLT as well as CT-MRI-FLT reconstructions. Fluorescence tomography reconstructions supported by CT, MRI, or CT-MRI were comparable in dead mice with 60 pmol fluorescence inserts at different locations. Although standard CT-FLT reconstruction only considered general values for soft tissue, skin, lung, fat, and bone scattering, MRI's more versatile soft tissue contrast enabled the additional consideration of liver, kidneys, and brain. However, this did not change FLT reconstructions and quantifications significantly, whereas for extending scattering maps, it was important to accurately segment the organs and the entire mouse body. The various FLT reconstructions also provided comparable results for the in vivo biodistribution analyses with fluorescent immunoglobulins. However, MRI additionally enabled the visualization of gallbladder, thyroid, and brain. Furthermore, segmentations of liver, spleen, and kidney were more reliable due to better-defined contours than in CT. Therefore, the improved segmentations enabled better assignment of fluorescence signals and more differentiated conclusions with MRI-FLT. CONCLUSIONS Whole-body CT-MRI-FLT was implemented as a novel trimodal imaging approach, which allowed to more accurately assign fluorescence signals, thereby significantly improving pharmacokinetic analyses.
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Affiliation(s)
- Sarah Schraven
- From the Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany (S.S., R.B., S.R., T.L., D.H., W.L., F.G., F.K.); Institute of Molecular Medicine, RWTH Aachen University, Aachen, Germany (H.N., O.P.); Gremse-IT GmbH, Aachen, Germany (S.R., F.G.); Department for Diagnostic and Interventional Radiology, RWTH Aachen University, Aachen, Germany (T.L.); Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany (F.K.); and Fraunhofer MEVIS, Institute for Medical Image Computing, Aachen, Germany (F.K.)
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7
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Nauta S, Greven J, Hofman M, Mohren R, Meesters DM, Möckel D, Lammers T, Hildebrand F, Siegel TP, Cuypers E, Heeren RM, Poeze M. Mass Spectrometry Reveals Molecular Effects of Citrulline Supplementation during Bone Fracture Healing in a Rat Model. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2024; 35:1184-1196. [PMID: 38679918 PMCID: PMC11157653 DOI: 10.1021/jasms.4c00028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 04/03/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024]
Abstract
Bone fracture healing is a complex process in which specific molecular knowledge is still lacking. The citrulline-arginine-nitric oxide metabolism is one of the involved pathways, and its enrichment via citrulline supplementation can enhance fracture healing. This study investigated the molecular effects of citrulline supplementation during the different fracture healing phases in a rat model. Microcomputed tomography (μCT) was applied for the analysis of the fracture callus formation. Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) and liquid-chromatography tandem mass spectrometry (LC-MS/MS) were used for lipid and protein analyses, respectively. μCT analysis showed no significant differences in the fracture callus volume and volume fraction between the citrulline supplementation and control group. The observed lipid profiles for the citrulline supplementation and control group were distinct for the different fracture healing stages. The main contributing lipid classes were phosphatidylcholines (PCs) and lysophosphatidylcholines (LPCs). The changing effect of citrulline supplementation throughout fracture healing was indicated by changes in the differentially expressed proteins between the groups. Pathway analysis showed an enhancement of fracture healing in the citrulline supplementation group in comparison to the control group via improved angiogenesis and earlier formation of the soft and hard callus. This study showed the molecular effects on lipids, proteins, and pathways associated with citrulline supplementation during bone fracture healing, even though no effect was visible with μCT.
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Affiliation(s)
- Sylvia Nauta
- Division
of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging
(M4i) Institute, Maastricht University, 6229ER Maastricht, The Netherlands
- Division
of Traumasurgery, Department of Surgery, Maastricht University Medical Center, 6229HX Maastricht, The Netherlands
| | - Johannes Greven
- Department
of Orthopedics, Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, 52074 Aachen, Germany
| | - Martijn Hofman
- Center
of Musculoskeletal Surgery, Bonifatius Hospital
Lingen, 49808 Lingen, Germany
| | - Ronny Mohren
- Division
of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging
(M4i) Institute, Maastricht University, 6229ER Maastricht, The Netherlands
| | - Dennis M. Meesters
- Department
of Genetics & Cell Biology, Maastricht
University, 6229ER Maastricht, The Netherlands
- NUTRIM, School
for Nutrition and Translational Research in Metabolism, Maastricht University, 6229ER Maastricht, The Netherlands
| | - Diana Möckel
- Department
of Nanomedicine and Theranostics, Institute for Experimental Molecular
Imaging, RWTH Aachen University Clinic, 52074 Aachen, Germany
| | - Twan Lammers
- Department
of Nanomedicine and Theranostics, Institute for Experimental Molecular
Imaging, RWTH Aachen University Clinic, 52074 Aachen, Germany
| | - Frank Hildebrand
- Department
of Orthopedics, Trauma and Reconstructive Surgery, University Hospital RWTH Aachen, 52074 Aachen, Germany
| | - Tiffany Porta Siegel
- Division
of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging
(M4i) Institute, Maastricht University, 6229ER Maastricht, The Netherlands
| | - Eva Cuypers
- Division
of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging
(M4i) Institute, Maastricht University, 6229ER Maastricht, The Netherlands
| | - Ron M.A. Heeren
- Division
of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging
(M4i) Institute, Maastricht University, 6229ER Maastricht, The Netherlands
| | - Martijn Poeze
- Division
of Traumasurgery, Department of Surgery, Maastricht University Medical Center, 6229HX Maastricht, The Netherlands
- NUTRIM, School
for Nutrition and Translational Research in Metabolism, Maastricht University, 6229ER Maastricht, The Netherlands
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8
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Wu X, Zhang W, Long L, Wang Y, Chen H, Wang K, Wang Z, Bai J, Xue D, Pan Z. KDELR2 promotes bone marrow mesenchymal stem cell osteogenic differentiation via GSK3β/β-catenin signaling pathway. Cell Tissue Res 2024; 396:269-281. [PMID: 38470494 DOI: 10.1007/s00441-024-03884-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 03/01/2024] [Indexed: 03/14/2024]
Abstract
Nonunion is a challenging complication of fractures for the surgeon. Recently the Lys-Asp-Glu-Leu (KDEL) endoplasmic reticulum protein retention receptor 2 (KDELR2) has been found that involved in osteogenesis imperfecta. However, the exact mechanism is still unclear. In this study, we used lentivirus infection and mouse fracture model to investigate the role of KDELR2 in osteogenesis. Our results showed that KDELR2 knockdown inhibited the osteogenic differentiation of mBMSCs, whereas KDELR2 overexpression had the opposite effect. Furthermore, the levels of active-β-catenin and phospho-GSK3β (Ser9) were upregulated by KDELR2 overexpression and downregulated by KDELR2 knockdown. In the fracture model, mBMSCs overexpressing KDELR2 promoted healing. In conclusion, KDELR2 promotes the osteogenesis of mBMSCs by regulating the GSK3β/β-catenin signaling pathway.
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Affiliation(s)
- Xiaoyong Wu
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzou City, Zhejiang Province, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou City, PR China
| | - Weijun Zhang
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzou City, Zhejiang Province, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou City, PR China
| | - Long Long
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzou City, Zhejiang Province, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou City, PR China
- Linping Hospital of Integrated Chinese and Western Medicine, No.60,Baojian Road, Hangzhou, 310009, China
| | - Yibo Wang
- Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
- Department of Spine Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Hongyu Chen
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzou City, Zhejiang Province, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou City, PR China
| | - Kanbin Wang
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzou City, Zhejiang Province, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou City, PR China
| | - Zhongxiang Wang
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzou City, Zhejiang Province, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou City, PR China
| | - Jinwu Bai
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzou City, Zhejiang Province, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou City, PR China
| | - Deting Xue
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China.
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzou City, Zhejiang Province, PR China.
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou City, PR China.
| | - Zhijun Pan
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou 310009, China.
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzou City, Zhejiang Province, PR China.
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou City, PR China.
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9
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Heitzer M, Winnand P, Ooms M, Magnuska Z, Kiessling F, Buhl EM, Hölzle F, Modabber A. A Biodegradable Tissue Adhesive for Post-Extraction Alveolar Bone Regeneration under Ongoing Anticoagulation-A Microstructural Volumetric Analysis in a Rodent Model. Int J Mol Sci 2024; 25:4210. [PMID: 38673796 PMCID: PMC11049800 DOI: 10.3390/ijms25084210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/04/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
In addition to post-extraction bleeding, pronounced alveolar bone resorption is a very common complication after tooth extraction in patients undergoing anticoagulation therapy. The novel, biodegenerative, polyurethane adhesive VIVO has shown a positive effect on soft tissue regeneration and hemostasis. However, the regenerative potential of VIVO in terms of bone regeneration has not yet been explored. The present rodent study compared the post-extraction bone healing of a collagen sponge (COSP) and VIVO in the context of ongoing anticoagulation therapy. According to a split-mouth design, a total of 178 extraction sockets were generated under rivaroxaban treatment, of which 89 extraction sockets were treated with VIVO and 89 with COSP. Post-extraction bone analysis was conducted via in vivo micro-computed tomography (µCT), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX) after 5, 10, and 90 days. During the observation time of 90 days, µCT analysis revealed that VIVO and COSP led to significant increases in both bone volume and bone density (p ≤ 0.001). SEM images of the extraction sockets treated with either VIVO or COSP showed bone regeneration in the form of lamellar bone mass. Ratios of Ca/C and Ca/P observed via EDX indicated newly formed bone matrixes in both treatments after 90 days. There were no statistical differences between treatment with VIVO or COSP. The hemostatic agents VIVO and COSP were both able to prevent pronounced bone loss, and both demonstrated a strong positive influence on the bone regeneration of the alveolar ridge post-extraction.
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Affiliation(s)
- Marius Heitzer
- Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen, Pauwelstraße 30, 52074 Aachen, Germany (M.O.)
| | - Philipp Winnand
- Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen, Pauwelstraße 30, 52074 Aachen, Germany (M.O.)
| | - Mark Ooms
- Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen, Pauwelstraße 30, 52074 Aachen, Germany (M.O.)
| | - Zuzanna Magnuska
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstraße 55, 52074 Aachen, Germany; (Z.M.)
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstraße 55, 52074 Aachen, Germany; (Z.M.)
| | - Eva Miriam Buhl
- Institute for Pathology, Electron Microscopy Facility, University Hospital RWTH Aachen, Pauwelstraße 30, 52074 Aachen, Germany
| | - Frank Hölzle
- Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen, Pauwelstraße 30, 52074 Aachen, Germany (M.O.)
| | - Ali Modabber
- Department of Oral and Maxillofacial Surgery, University Hospital RWTH Aachen, Pauwelstraße 30, 52074 Aachen, Germany (M.O.)
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10
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Jaeger JW, Brandt A, Gui W, Yergaliyev T, Hernández-Arriaga A, Muthu MM, Edlund K, Elashy A, Molinaro A, Möckel D, Sarges J, Halibasic E, Trauner M, Kahles F, Rolle-Kampczyk U, Hengstler J, Schneider CV, Lammers T, Marschall HU, von Bergen M, Camarinha-Silva A, Bergheim I, Trautwein C, Schneider KM. Microbiota modulation by dietary oat beta-glucan prevents steatotic liver disease progression. JHEP Rep 2024; 6:100987. [PMID: 38328439 PMCID: PMC10844974 DOI: 10.1016/j.jhepr.2023.100987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 11/16/2023] [Accepted: 12/06/2023] [Indexed: 02/09/2024] Open
Abstract
Background & Aims Changes in gut microbiota in metabolic dysfunction-associated steatotic liver disease (MASLD) are important drivers of disease progression towards fibrosis. Therefore, reversing microbial alterations could ameliorate MASLD progression. Oat beta-glucan, a non-digestible polysaccharide, has shown promising therapeutic effects on hyperlipidemia associated with MASLD, but its impact on gut microbiota and most importantly MASLD-related fibrosis remains unknown. Methods We performed detailed metabolic phenotyping, including assessments of body composition, glucose tolerance, and lipid metabolism, as well as comprehensive characterization of the gut-liver axis in a western-style diet (WSD)-induced model of MASLD and assessed the effect of a beta-glucan intervention on early and advanced liver disease. Gut microbiota were modulated using broad-spectrum antibiotic treatment. Results Oat beta-glucan supplementation did not affect WSD-induced body weight gain or glucose intolerance and the metabolic phenotype remained largely unaffected. Interestingly, oat beta-glucan dampened MASLD-related inflammation, which was associated with significantly reduced monocyte-derived macrophage infiltration and fibroinflammatory gene expression, as well as strongly reduced fibrosis development. Mechanistically, this protective effect was not mediated by changes in bile acid composition or signaling, but was dependent on gut microbiota and was lost upon broad-spectrum antibiotic treatment. Specifically, oat beta-glucan partially reversed unfavorable changes in gut microbiota, resulting in an expansion of protective taxa, including Ruminococcus, and Lactobacillus followed by reduced translocation of Toll-like receptor ligands. Conclusions Our findings identify oat beta-glucan as a highly efficacious food supplement that dampens inflammation and fibrosis development in diet-induced MASLD. These results, along with its favorable dietary profile, suggest that it may be a cost-effective and well-tolerated approach to preventing MASLD progression and should be assessed in clinical studies. Impact and Implications Herein, we investigated the effect of oat beta-glucan on the gut-liver axis and fibrosis development in a mouse model of metabolic dysfunction-associated steatotic liver disease (MASLD). Beta-glucan significantly reduced inflammation and fibrosis in the liver, which was associated with favorable shifts in gut microbiota that protected against bacterial translocation and activation of fibroinflammatory pathways. Together, oat beta-glucan may be a cost-effective and well-tolerated approach to prevent MASLD progression and should be assessed in clinical studies.
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Affiliation(s)
- Julius W. Jaeger
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Annette Brandt
- Department of Nutritional Sciences, University of Vienna, Vienna, Austria
| | - Wenfang Gui
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Timur Yergaliyev
- Department Microbial Ecology of Livestock at the Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Angélica Hernández-Arriaga
- Department Microbial Ecology of Livestock at the Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Mukil Marutha Muthu
- Department Microbial Ecology of Livestock at the Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Karolina Edlund
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | - Ahmed Elashy
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Antonio Molinaro
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine and Sahlgrenska Center for Cardiovascular and Metabolic Research, University of Gothenburg, Gothenburg, Sweden
- Norwegian PSC Research Center, Department of Transplantation Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Diana Möckel
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University, Aachen, Germany
| | - Jan Sarges
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Emina Halibasic
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Michael Trauner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Florian Kahles
- Department of Medicine I, University Hospital RWTH Aachen, Aachen, Germany
| | - Ulrike Rolle-Kampczyk
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Jan Hengstler
- Department of Toxicology, Leibniz Research Centre for Working Environment and Human Factors, Dortmund, Germany
| | | | - Twan Lammers
- Norwegian PSC Research Center, Department of Transplantation Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Hanns-Ulrich Marschall
- Wallenberg Laboratory, Department of Molecular and Clinical Medicine and Sahlgrenska Center for Cardiovascular and Metabolic Research, University of Gothenburg, Gothenburg, Sweden
| | - Martin von Bergen
- Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research (UFZ), Leipzig, Germany
| | - Amélia Camarinha-Silva
- Department Microbial Ecology of Livestock at the Institute of Animal Science, University of Hohenheim, Stuttgart, Germany
| | - Ina Bergheim
- Department of Nutritional Sciences, University of Vienna, Vienna, Austria
| | - Christian Trautwein
- Department of Medicine III, University Hospital RWTH Aachen, Aachen, Germany
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11
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Möckel D, Bartneck M, Niemietz P, Wagner M, Ehling J, Rama E, Weiler M, Gremse F, Eulberg D, Pola R, Pechar M, Etrych T, Storm G, Kiessling F, Tacke F, Lammers T. CCL2 chemokine inhibition primes the tumor vasculature for improved nanomedicine delivery and efficacy. J Control Release 2024; 365:358-368. [PMID: 38016488 DOI: 10.1016/j.jconrel.2023.11.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 10/20/2023] [Accepted: 11/22/2023] [Indexed: 11/30/2023]
Abstract
Blood vessel functionality is crucial for efficient tumor-targeted drug delivery. Heterogeneous distribution and perfusion of angiogenic blood vessels contribute to suboptimal accumulation of (nano-) therapeutics in tumors and metastases. To attenuate pathological angiogenesis, an L-RNA aptamer inhibiting the CC motif chemokine ligand 2 (CCL2) was administered to mice bearing orthotopic 4T1 triple-negative breast cancer tumors. The effect of CCL2 inhibition on tumor blood vessel functionality and tumor-targeted drug delivery was evaluated via multimodal and multiscale optical imaging, employing fluorophore-labeled polymeric (10 nm) and liposomal (100 nm) nanocarriers. Anti-CCL2 treatment induced a dose-dependent anti-angiogenic effect, reflected by a decreased relative blood volume, increased blood vessel maturity and functionality, and reduced macrophage infiltration, accompanied by a shift in the polarization of tumor-associated macrophages (TAM) towards a less M2-like and more M1-like phenotype. In line with this, CCL2 inhibitor treatment improved the delivery of polymers and liposomes to tumors, and enhanced the antitumor efficacy of free and liposomal doxorubicin. Together, these findings demonstrate that blocking the CCL2-CCR2 axis modulates TAM infiltration and polarization, resulting in vascular normalization and improved tumor-targeted drug delivery.
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Affiliation(s)
- Diana Möckel
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, Aachen, Germany
| | - Matthias Bartneck
- Department of Medicine III, Medical Faculty, RWTH Aachen University Clinic, Aachen, Germany
| | - Patricia Niemietz
- Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Charité Campus Mitte, Charité - Universitätsmedizin Berlin, Germany
| | - Maike Wagner
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, Aachen, Germany
| | - Josef Ehling
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, Aachen, Germany
| | - Elena Rama
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, Aachen, Germany
| | - Marek Weiler
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, Aachen, Germany
| | - Felix Gremse
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, Aachen, Germany; Gremse-IT GmbH, Aachen, Germany
| | | | - Robert Pola
- Czech Academy of Sciences, Institute of Macromolecular Chemistry, Prague, Czech Republic
| | - Michal Pechar
- Czech Academy of Sciences, Institute of Macromolecular Chemistry, Prague, Czech Republic
| | - Tomas Etrych
- Czech Academy of Sciences, Institute of Macromolecular Chemistry, Prague, Czech Republic
| | - Gert Storm
- Department of Pharmaceutics, Utrecht University, the Netherlands; Department of Biomaterials, Science and Technology, University of Twente, the Netherlands; Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, Aachen, Germany
| | - Frank Tacke
- Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Charité Campus Mitte, Charité - Universitätsmedizin Berlin, Germany
| | - Twan Lammers
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, RWTH Aachen University Clinic, Aachen, Germany.
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12
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Kroh A, Walter J, Fragoulis A, Möckel D, Lammers T, Kiessling F, Andruszkow J, Preisinger C, Egbert M, Jiao L, Eickhoff RM, Heise D, Berndt N, Cramer T, Neumann UP, Egners A, Ulmer TF. Hepatocellular loss of mTOR aggravates tumor burden in nonalcoholic steatohepatitis-related HCC. Neoplasia 2023; 46:100945. [PMID: 37976569 PMCID: PMC10685311 DOI: 10.1016/j.neo.2023.100945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 10/13/2023] [Indexed: 11/19/2023]
Abstract
Obesity and associated nonalcoholic steatohepatitis (NASH) are on the rise globally. NASH became an important driver of hepatocellular carcinoma (HCC) in recent years. Activation of the central metabolic regulator mTOR (mechanistic target of rapamycin) is frequently observed in HCCs. However, mTOR inhibition failed to improve the outcome of HCC therapies, demonstrating the need for a better understanding of the molecular and functional consequences of mTOR blockade. We established a murine NASH-driven HCC model based on long-term western diet feeding combined with hepatocellular mTOR-inactivation. We evaluated tumor load and whole-body fat percentage via µCT-scans, analyzed metabolic blood parameters and tissue proteome profiles. Additionally, we used a bioinformatic model to access liver and HCC mitochondrial metabolic functions. The tumor burden was massively increased via mTOR-knockout. Several signs argue for extensive metabolic reprogramming of glucose, fatty acid, bile acid and cholesterol metabolism. Kinetic modeling revealed reduced oxygen consumption in KO-tumors. NASH-derived HCC pathogenesis is driven by metabolic disturbances and should be considered separately from those caused by other etiologies. We conclude that mTOR functions as tumor suppressor in hepatocytes especially under long-term western diet feeding. However, some of the detrimental consequences of this diet are attenuated by mTOR blockade.
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Affiliation(s)
- Andreas Kroh
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany.
| | - Jeanette Walter
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany; Department of Hematology, Oncology, Hemostaseology, and Stem Cell Transplantation, RWTH Aachen University Hospital, Aachen, Germany
| | - Athanassios Fragoulis
- Department of Anatomy and Cell Biology, RWTH Aachen University Hospital Aachen, Germany
| | - Diana Möckel
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen, Germany
| | - Twan Lammers
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen, Germany
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging (ExMI), RWTH Aachen University Hospital, Aachen, Germany
| | - Julia Andruszkow
- Institute of Pathology, RWTH Aachen University Hospital, Aachen, Germany
| | - Christian Preisinger
- Proteomics Facility, Interdisciplinary Center for Clinical Research (IZKF) Aachen, Medical School, RWTH Aachen University Hospital, Aachen, Germany
| | - Maren Egbert
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Long Jiao
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany; Department of General Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, PR China
| | - Roman M Eickhoff
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Daniel Heise
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Nikolaus Berndt
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), Nuthetal, Germany; Institute of Computer-assisted Cardiovascular Medicine, Deutsches Herzzentrum der Charité (DHZC), Berlin, Germany; Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Thorsten Cramer
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Ulf Peter Neumann
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany; Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Antje Egners
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany
| | - Tom Florian Ulmer
- Department of General, Visceral and Transplantation Surgery, RWTH Aachen University Hospital, Aachen, Germany; Department of Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
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13
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Wang Y, Hang K, Ying L, Wu J, Wu X, Zhang W, Li L, Wang Z, Bai J, Gao X, Xue D, Pan Z. LAMP2A regulates the balance of mesenchymal stem cell adipo-osteogenesis via the Wnt/β-catenin/GSK3β signaling pathway. J Mol Med (Berl) 2023; 101:783-799. [PMID: 37162558 DOI: 10.1007/s00109-023-02328-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/11/2023]
Abstract
Chaperone-mediated autophagy (CMA) plays multiple roles in cell metabolism. We found that lysosome-associated membrane protein type 2A (LAMP2A), a crucial protein of CMA, plays a key role in the control of mesenchymal stem cell (MSC) adipo-osteogenesis. We identified a differentially expressed CMA gene (LAMP2) in GEO datasets (GSE4911 and GSE494). Further, we performed co-expression analyses to define the relationships between CMA components genes and other relevant genes including Col1a1, Runx2, Wnt3 and Gsk3β. Mouse BMSCs (mMSCs) exhibiting Lamp2a gene knockdown (LA-KD) and overexpression (LA-OE) were created using an adenovirus system; then we investigated LAMP2A function in vitro by Western blot, Oil Red staining, ALP staining, ARS staining and Immunofluorescence analysis. Next, we used a modified mouse model of tibial fracture to investigate LAMP2A function in vivo. LAMP2A knockdown in mMSCs decreased the levels of osteogenic-specific proteins (COL1A1 and RUNX2) and increased those of the adipogenesis markers PPARγ and C/EBPα; LAMP2A overexpression had the opposite effects. The active-β-catenin and phospho-GSK3β (Ser9) levels were upregulated by LAMP2A overexpression and downregulated by LAMP2A knockdown. In the mouse model of tibial fracture, mMSC-overexpressing LAMP2A improved bone healing, as demonstrated by microcomputed tomography and histological analyses. In summary, LAMP2A positively regulates mMSC osteogenesis and suppresses adipo-osteogenesis, probably via Wnt/β-catenin/GSK3β signaling. LAMP2A promoted fracture-healing in the mouse model of tibial fracture. KEY MESSAGES: • LAMP2 positively regulates the mBMSCs osteogenic differentiation. • LAMP2 negatively regulates the mBMSCs adipogenic differentiation. • LAMP2 regulates mBMSCs osteogenesis via Wnt/β-catenin/GSK3β signaling pathway. • LAMP2 overexpression mBMSCs promote the fracture healing.
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Affiliation(s)
- Yibo Wang
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Kai Hang
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Li Ying
- Department of Orthopedic, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, No. 150, Ximen Street, Linhai, 317000, China
| | - Jiaqi Wu
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Xiaoyong Wu
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Weijun Zhang
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Lijun Li
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Zhongxiang Wang
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Jinwu Bai
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China
| | - Xiang Gao
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.
| | - Deting Xue
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.
| | - Zhijun Pan
- Department of Orthopedic Surgery of the Second Affiliated Hospital, School of Medicine, Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.
- Orthopedics Research Institute of Zhejiang University, No. 88, Jiefang Road, Hangzhou, 310009, China.
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14
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van Gaalen K, Quinn C, Weiler M, Gremse F, Benn F, McHugh PE, Vaughan TJ, Kopp A. Predicting localised corrosion and mechanical performance of a PEO surface modified rare earth magnesium alloy for implant use through in-silico modelling. Bioact Mater 2023; 26:437-451. [PMID: 36993789 PMCID: PMC10040519 DOI: 10.1016/j.bioactmat.2023.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/03/2023] [Accepted: 03/13/2023] [Indexed: 03/28/2023] Open
Abstract
In this study, the influence of a plasma electrolytic oxidation (PEO) surface treatment on a medical-grade WE43-based magnesium alloy is examined through an experimental and computational framework that considers the effects of localised corrosion features and mechanical properties throughout the corrosion process. First, a comprehensive in-vitro immersion study was performed on WE43-based tensile specimens with and without PEO surface modification, which included fully automated spatial reconstruction of the phenomenological features of corrosion through micro-CT scanning, followed by uniaxial tensile testing. Then the experimental data of both unmodified and PEO-modified groups were used to calibrate parameters of a finite element-based surface corrosion model. In-vitro, it was found that the WE43-PEO modified group had a significantly lower corrosion rate and maintained significantly higher mechanical properties than the unmodified. While corrosion rates were ∼50% lower in the WE43-PEO modified specimens, the local geometric features of corroding surfaces remained similar to the unmodified WE43 group, however evolving after almost the double amount of time. We were also able to quantitatively demonstrate that the PEO surface treatment on magnesium continued to protect samples from corrosion throughout the entire period tested, and not just in the early stages of corrosion. Using the results from the testing framework, the model parameters of the surface-based corrosion model were identified for both groups. This enabled, for the first time, in-silico prediction of the physical features of corrosion and the mechanical performance of both unmodified and PEO modified magnesium specimens. This simulation framework can enable future in-silico design and optimisation of bioabsorbable magnesium devices for load-bearing medical applications. Examination of corrosion morphology and mechanics of PEO modified WE43. Automated phenomenological tracking of corrosion features by PitScan. Corrosion model of unmodified WE43 and WE43 PEO modified. Calibration through geometrical features and mechanical parameters followed. PEO treatment does not influence the severity of localised corrosion.
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Affiliation(s)
- Kerstin van Gaalen
- Biomechanics Research Centre (BioMEC), Biomedical Engineering, School of Engineering, University of Galway, Galway, Ireland
- Meotec GmbH, Aachen, Germany
| | - Conall Quinn
- Biomechanics Research Centre (BioMEC), Biomedical Engineering, School of Engineering, University of Galway, Galway, Ireland
| | - Marek Weiler
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany
| | - Felix Gremse
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany
- Gremse-IT GmbH, Aachen, Germany
| | - Felix Benn
- Meotec GmbH, Aachen, Germany
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Belfast, United Kingdom
| | - Peter E. McHugh
- Biomechanics Research Centre (BioMEC), Biomedical Engineering, School of Engineering, University of Galway, Galway, Ireland
| | - Ted J. Vaughan
- Biomechanics Research Centre (BioMEC), Biomedical Engineering, School of Engineering, University of Galway, Galway, Ireland
- Corresponding author. Biomechanics Research Centre (BioMEC), Biomedical Engineering, University of Galway, Galway, Ireland.
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15
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Schraven S, Rosenhain S, Brueck R, Wiechmann TM, Pola R, Etrych T, Lederle W, Lammers T, Gremse F, Kiessling F. Dye labeling for optical imaging biases drug carriers' biodistribution and tumor uptake. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2023; 48:102650. [PMID: 36623712 DOI: 10.1016/j.nano.2023.102650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/25/2022] [Accepted: 12/27/2022] [Indexed: 01/08/2023]
Abstract
Biodistribution analyses of nanocarriers are often performed with optical imaging. Though dye tags can interact with transporters, e.g., organic anion transporting polypeptides (OATPs), their influence on biodistribution was hardly studied. Therefore, this study compared tumor cell uptake and biodistribution (in A431 tumor-bearing mice) of four near-infrared fluorescent dyes (AF750, IRDye750, Cy7, DY-750) and dye-labeled poly(N-(2-hydroxypropyl)methacrylamide)-based nanocarriers (dye-pHPMAs). Tumor cell uptake of hydrophobic dyes (Cy7, DY-750) was higher than that of hydrophilic dyes (AF750, IRDye750), and was actively mediated but not related to OATPs. Free dyes' elimination depended on their hydrophobicity, and tumor uptake correlated with blood circulation times. Dye-pHPMAs circulated longer and accumulated stronger in tumors than free dyes. Dye labeling significantly influenced nanocarriers' tumor accumulation and biodistribution. Therefore, low-interference dyes and further exploration of dye tags are required to achieve the most unbiased results possible. In our assessment, AF750 and IRDye750 best qualified for labeling hydrophilic nanocarriers.
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Affiliation(s)
- Sarah Schraven
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074 Aachen, Germany
| | - Stefanie Rosenhain
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074 Aachen, Germany; Gremse-IT GmbH, Dennewartstrasse 25, 52068 Aachen, Germany
| | - Ramona Brueck
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074 Aachen, Germany
| | - Tim Marvin Wiechmann
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074 Aachen, Germany
| | - Robert Pola
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Tomáš Etrych
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Wiltrud Lederle
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074 Aachen, Germany
| | - Twan Lammers
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074 Aachen, Germany
| | - Felix Gremse
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074 Aachen, Germany; Gremse-IT GmbH, Dennewartstrasse 25, 52068 Aachen, Germany
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074 Aachen, Germany; Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany; Fraunhofer MEVIS, Institute for Medical Image Computing, Aachen, Germany.
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16
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EGFL7 Secreted By Human Bone Mesenchymal Stem Cells Promotes Osteoblast Differentiation Partly Via Downregulation Of Notch1-Hes1 Signaling Pathway. Stem Cell Rev Rep 2023; 19:968-982. [PMID: 36609902 DOI: 10.1007/s12015-022-10503-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/23/2022] [Indexed: 01/09/2023]
Abstract
BACKGROUND Epidermal growth factor-like domain protein 7 (EGFL7) is a secreted protein that is differentially expressed in the bone microenvironment; however, the effect of EGFL7 on the osteogenesis of human bone marrow mesenchymal stem cells (hBMSCs) is largely unknown. METHODS EGFL7 expression in the fracture microenvironment was analyzed based on the Gene Expression Omnibus (GEO) database. Knockdown of EGFL7 by small interfering RNA (siRNA) and in vitro stimulation with recombinant human EGFL7 (rhEGFL7) protein were used to assess alterations in downstream signaling and changes in the osteogenic differentiation and proliferation of hBMSCs. A γ-secretase inhibitor was used to further explore whether inhibition of Notch signaling rescued the osteogenic-inhibitory effect of EGFL7 knockdown in hBMSCs. A femoral defect model was established to verify the effect of recombinant mouse EGFL7 on bone healing in vivo. RESULTS EGFL7 expression increased during hBMSC osteogenesis. Knockdown of EGFL7 impaired hBMSC osteogenesis and activated Notch1/NICD/Hes1 signaling. rhEGFL7 promoted hBMSC osteogenesis and downregulated Notch1 signaling. The osteoblast-inhibitory effect of EGFL7 knockdown was rescued by Notch1 signaling inhibition. Recombinant EGFL7 led to enhanced bone healing in mice with femoral defects. CONCLUSIONS EGFL7 promotes osteogenesis of hBMSCs partly via downregulation of Notch1 signaling.
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17
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Matthews EZ, Lanham S, White K, Kyriazi ME, Alexaki K, El-Sagheer AH, Brown T, Kanaras AG, J West J, MacArthur BD, Stumpf PS, Oreffo ROC. Single-cell RNA-sequence analysis of human bone marrow reveals new targets for isolation of skeletal stem cells using spherical nucleic acids. J Tissue Eng 2023; 14:20417314231169375. [PMID: 37216034 PMCID: PMC10192814 DOI: 10.1177/20417314231169375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/24/2023] [Indexed: 05/24/2023] Open
Abstract
There is a wealth of data indicating human bone marrow contains skeletal stem cells (SSC) with the capacity for osteogenic, chondrogenic and adipogenic differentiation. However, current methods to isolate SSCs are restricted by the lack of a defined marker, limiting understanding of SSC fate, immunophenotype, function and clinical application. The current study applied single-cell RNA-sequencing to profile human adult bone marrow populations from 11 donors and identified novel targets for SSC enrichment. Spherical nucleic acids were used to detect these mRNA targets in SSCs. This methodology was able to rapidly isolate potential SSCs found at a frequency of <1 in 1,000,000 in human bone marrow, with the capacity for tri-lineage differentiation in vitro and ectopic bone formation in vivo. The current studies detail the development of a platform to advance SSC enrichment from human bone marrow, offering an invaluable resource for further SSC characterisation, with significant therapeutic impact therein.
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Affiliation(s)
- Elloise Z Matthews
- Faculty of Medicine, Centre for Human
Development, Stem Cells and Regeneration, Human Development and Health, Institute of
Developmental Sciences, University of Southampton, Southampton, UK
| | - Stuart Lanham
- Faculty of Medicine, Centre for Human
Development, Stem Cells and Regeneration, Human Development and Health, Institute of
Developmental Sciences, University of Southampton, Southampton, UK
- Cancer Sciences, Faculty of Medicine,
University of Southampton, Southampton, UK
| | - Kate White
- Faculty of Medicine, Centre for Human
Development, Stem Cells and Regeneration, Human Development and Health, Institute of
Developmental Sciences, University of Southampton, Southampton, UK
| | - Maria-Eleni Kyriazi
- College of Engineering and Technology,
American University of the Middle East, Kuwait
| | - Konstantina Alexaki
- Physics and Astronomy, Faculty of
Physical Sciences and Engineering, University of Southampton, Southampton, UK
| | - Afaf H El-Sagheer
- Department of Chemistry, Chemistry
Research Laboratory, University of Oxford, Oxford, UK
- Chemistry Branch, Department of Science
and Mathematics, Faculty of Petroleum and Mining Engineering, Suez University, Suez,
Egypt
| | - Tom Brown
- Department of Chemistry, Chemistry
Research Laboratory, University of Oxford, Oxford, UK
| | - Antonios G Kanaras
- Physics and Astronomy, Faculty of
Physical Sciences and Engineering, University of Southampton, Southampton, UK
- Institute for Life Sciences, University
of Southampton, Southampton, UK
| | - Jonathan J West
- Cancer Sciences, Faculty of Medicine,
University of Southampton, Southampton, UK
- Physics and Astronomy, Faculty of
Physical Sciences and Engineering, University of Southampton, Southampton, UK
| | - Ben D MacArthur
- Faculty of Medicine, Centre for Human
Development, Stem Cells and Regeneration, Human Development and Health, Institute of
Developmental Sciences, University of Southampton, Southampton, UK
- Institute for Life Sciences, University
of Southampton, Southampton, UK
- Mathematical Sciences, University of
Southampton, Southampton, UK
| | - Patrick S Stumpf
- Faculty of Medicine, Centre for Human
Development, Stem Cells and Regeneration, Human Development and Health, Institute of
Developmental Sciences, University of Southampton, Southampton, UK
- Joint Research Center for Computational
Biomedicine, RWTH Aachen University, Aachen, Germany
| | - Richard OC Oreffo
- Faculty of Medicine, Centre for Human
Development, Stem Cells and Regeneration, Human Development and Health, Institute of
Developmental Sciences, University of Southampton, Southampton, UK
- Institute for Life Sciences, University
of Southampton, Southampton, UK
- College of Biomedical Engineering,
China Medical University, Taichung, Taiwan
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18
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Kubo Y, Gonzalez JAH, Beckmann R, Weiler M, Pahlavani H, Saldivar MC, Szymanski K, Rosenhain S, Fragoulis A, Leeflang S, Slowik A, Gremse F, Wolf M, Mirzaali MJ, Zadpoor AA, Wruck CJ, Pufe T, Tohidnezhad M, Jahr H. Nuclear factor erythroid 2-related factor 2 (Nrf2) deficiency causes age-dependent progression of female osteoporosis. BMC Musculoskelet Disord 2022; 23:1015. [PMID: 36434613 PMCID: PMC9700883 DOI: 10.1186/s12891-022-05942-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 11/02/2022] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Nuclear factor erythroid 2-related factor 2 (Nrf2) is a crucial transcription factor for cellular redox homeostasis. The association of Nrf2 with elderly female osteoporotic has yet to be fully described. The aim was to elucidate a potential age-dependent Nrf2 contribution to female osteoporosis in mice. METHODS Eighteen female wild type (WT) and 16 Nrf2-knockout (KO) mice were sacrificed at different ages (12 weeks = young mature adult and 90 weeks = old) to analyze their femurs. The morphological properties (trabecular and cortical) were evaluated by micro-computed tomography (μCT) and compared to gold standard histochemistry analysis. The quasi-static compression tests were performed to calculate the mechanical properties of bones. Additionally, the population of bone resorbing cells and aromatase expression by osteocytes was immunohistochemically evaluated and empty osteocyte lacunae was counted in cortical bone. RESULTS Old Nrf2-KO mice revealed a significantly reduced trabecular bone mineral density (BMD), cortical thickness, cortical area, and bone fraction compared to old WT mice, regardless of no significant difference in skeletally mature young adult mice between WT and KO. Specifically, while all old WT mice showed thin metaphyseal trabeculae, trabecular bone was completely absent in 60% of old KO mice. Additionally, old KO mice showed significantly more osteoclast-like cells and fewer aromatase-positive osteocytes than WT mice, whereas the occurrence of empty osteocyte lacunae did not differ between both groups. Nrf2-KO mice further showed an age-dependently reduced fracture resilience compared to age-matched WT mice. CONCLUSION Our results suggest that chronic Nrf2 loss can lead to age-dependent progression of female osteoporosis.
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Affiliation(s)
- Yusuke Kubo
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Jesus Abraham Herrera Gonzalez
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Rainer Beckmann
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Marek Weiler
- grid.412301.50000 0000 8653 1507Institute for Experimental Molecular Imaging, Helmholtz Institute for Biomedical Engineering, Uniklinik RWTH Aachen, Forckenbeckstraße 55, 52074 Aachen, Germany
| | - Helda Pahlavani
- grid.5292.c0000 0001 2097 4740Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Mauricio Cruz Saldivar
- grid.5292.c0000 0001 2097 4740Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Katharina Szymanski
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Stefanie Rosenhain
- grid.412301.50000 0000 8653 1507Institute for Experimental Molecular Imaging, Helmholtz Institute for Biomedical Engineering, Uniklinik RWTH Aachen, Forckenbeckstraße 55, 52074 Aachen, Germany
| | - Athanassios Fragoulis
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Sander Leeflang
- grid.5292.c0000 0001 2097 4740Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Alexander Slowik
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Felix Gremse
- grid.412301.50000 0000 8653 1507Institute for Experimental Molecular Imaging, Helmholtz Institute for Biomedical Engineering, Uniklinik RWTH Aachen, Forckenbeckstraße 55, 52074 Aachen, Germany
| | - Michael Wolf
- grid.412301.50000 0000 8653 1507Department of Orthodontics, Uniklinik RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Mohammad Javad Mirzaali
- grid.5292.c0000 0001 2097 4740Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Amir Abbas Zadpoor
- grid.5292.c0000 0001 2097 4740Department of Biomechanical Engineering, Faculty of Mechanical, Maritime, and Materials Engineering, Delft University of Technology (TU Delft), Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Christoph Jan Wruck
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Thomas Pufe
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Mersedeh Tohidnezhad
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany
| | - Holger Jahr
- grid.412301.50000 0000 8653 1507Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Wendlingweg 2, 52074 Aachen, Germany ,grid.1957.a0000 0001 0728 696XInstitute of Structural Mechanics and Lightweight Design, RWTH Aachen University, Wüllnerstraße 7, 52062 Aachen, Germany
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19
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Möhlhenrich SC, Kniha K, Heitzer M, Magnuska Z, Hermanns-Sachweh B, Gremse F, Chhatwani S, Hölzle F, Modabber A, Danesh G. Correlations between radiological and histological findings of bone remodelling and root resorption in a rodent cleft model. Head Face Med 2022; 18:33. [DOI: 10.1186/s13005-022-00338-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 10/03/2022] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
The evaluation of bone remodelling and dental root resorption can be performed by histological techniques or micro-computed tomography (micro-CT). The present study aimed to evaluate the relationship between these two procedures in the context of cleft repair in a rat model.
Methods
The reconstructed maxillae and the orthodontically-moved first molar of 12 rats were analysed for correlations between the histological and radiological findings retrospectively. The alveolar cleft repairs were performed using bone autografts or (human) xenografts. Four weeks after the operation, the intervention of the first molar protraction was initiated and lasted for eight weeks. The newly formed bone and the root resorption lacunae were determined via histology. In the micro-CT analysis, the average change of bone mineral density (BMD), bone volume fraction (BV/TV), trabecular thickness and trabecular separation of the jaw, as well as the volume of the root resorptions were determined. The Pearson correlation coefficient was applied to study the associations between groups.
Results
Positive correlations were found only between the newly formed bone (histology) and BMD changes (micro-CT) in the autograft group (r = 0.812, 95% CI: 0.001 to 0.979, p = 0.05). The relationship of newly formed bone and BV/TV was similar but not statistically significant (r = 0.691, 95% CI: −0.274 to 0.963, p = 0.013). Regarding root resorption, no significant correlations were found.
Conclusions
Due to the lack of correlation between histological and radiological findings of bone remodelling and the development of root resorptions, both methods should be combined in this cleft model in rats for a comprehensive analysis.
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20
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Enhanced cultured diversity of the mouse gut microbiota enables custom-made synthetic communities. Cell Host Microbe 2022; 30:1630-1645.e25. [DOI: 10.1016/j.chom.2022.09.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 07/30/2022] [Accepted: 09/13/2022] [Indexed: 12/26/2022]
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21
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Physiological Mineralization during In Vitro Osteogenesis in a Biomimetic Spheroid Culture Model. Cells 2022; 11:cells11172702. [PMID: 36078105 PMCID: PMC9454617 DOI: 10.3390/cells11172702] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 08/22/2022] [Accepted: 08/25/2022] [Indexed: 11/16/2022] Open
Abstract
Bone health-targeting drug development strategies still largely rely on inferior 2D in vitro screenings. We aimed at developing a scaffold-free progenitor cell-based 3D biomineralization model for more physiological high-throughput screenings. MC3T3-E1 pre-osteoblasts were cultured in α-MEM with 10% FCS, at 37 °C and 5% CO2 for up to 28 days, in non-adherent V-shaped plates to form uniformly sized 3D spheroids. Osteogenic differentiation was induced by 10 mM β-glycerophosphate and 50 µg/mL ascorbic acid. Mineralization stages were assessed through studying expression of marker genes, alkaline phosphatase activity, and calcium deposition by histochemistry. Mineralization quality was evaluated by Fourier transformed infrared (FTIR) and scanning electron microscopic (SEM) analyses and quantified by micro-CT analyses. Expression profiles of selected early- and late-stage osteoblast differentiation markers indicated a well-developed 3D biomineralization process with strongly upregulated Col1a1, Bglap and Alpl mRNA levels and type I collagen- and osteocalcin-positive immunohistochemistry (IHC). A dynamic biomineralization process with increasing mineral densities was observed during the second half of the culture period. SEM–Energy-Dispersive X-ray analyses (EDX) and FTIR ultimately confirmed a native bone-like hydroxyapatite mineral deposition ex vivo. We thus established a robust and versatile biomimetic, and high-throughput compatible, cost-efficient spheroid culture model with a native bone-like mineralization for improved pharmacological ex vivo screenings.
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22
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Thamm M, Rosenhain S, Leonardic K, Höfter A, Kiessling F, Osl F, Pöschinger T, Gremse F. Intrinsic Respiratory Gating for Simultaneous Multi-Mouse μCT Imaging to Assess Liver Tumors. Front Med (Lausanne) 2022; 9:878966. [PMID: 35872758 PMCID: PMC9299429 DOI: 10.3389/fmed.2022.878966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 06/08/2022] [Indexed: 11/18/2022] Open
Abstract
Small animal micro computed tomography (μCT) is an important tool in cancer research and is used to quantify liver and lung tumors. A type of cancer that is intensively investigated with μCT is hepatocellular carcinoma (HCC). μCT scans acquire projections from different angles of the gantry which rotates X-ray source and detector around the animal. Motion of the animal causes inconsistencies between the projections which lead to artifacts in the resulting image. This is problematic in HCC research, where respiratory motion affects the image quality by causing hypodense intensity at the liver edge and smearing out small structures such as tumors. Dealing with respiratory motion is particularly difficult in a high throughput setting when multiple mice are scanned together and projection removal by retrospective respiratory gating may compromise image quality and dose efficiency. In mice, inhalation anesthesia leads to a regular respiration with short gasps and long phases of negligible motion. Using this effect and an iterative reconstruction which can cope with missing angles, we discard the relatively few projections in which the gasping motion occurs. Moreover, since gated acquisition, i.e., acquiring multiple projections from a single gantry angle is not a requirement, this method can be applied to existing scans. We applied our method in a high throughput setting in which four mice with HCC tumors were scanned simultaneously in a multi-mouse bed. To establish a ground truth, we manually selected projections with visible respiratory motion. Our automated intrinsic breathing projection selection achieved an accordance of 97% with manual selection. We reconstructed volumetric images and demonstrated that our intrinsic gating method significantly reduces the hypodense depiction at the cranial liver edge and improves the detectability of small tumors. Furthermore, we show that projection removal in a four mice scan discards only 7.5% more projections than in a single-mouse setting, i.e., four mouse scanning does not substantially compromise dose efficiency or image quality. To the best of our knowledge, no comparable method that combines multi-mouse scans for high throughput, intrinsic respiratory gating, and an available iterative reconstruction has been described for liver tumor imaging before.
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Affiliation(s)
- Mirko Thamm
- Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany
- Gremse-IT GmbH, Aachen, Germany
| | | | | | | | - Fabian Kiessling
- Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany
- Fraunhofer Institute for Digital Medicine MEVIS, Bremen, Germany
| | - Franz Osl
- Discovery Pharmacology, Pharma Research and Early Development (pRED), Roche Innovation Center Munich, Penzberg, Germany
| | - Thomas Pöschinger
- Discovery Pharmacology, Pharma Research and Early Development (pRED), Roche Innovation Center Munich, Penzberg, Germany
| | - Felix Gremse
- Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany
- Gremse-IT GmbH, Aachen, Germany
- *Correspondence: Felix Gremse
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23
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Pfeifer R, Henze J, Wittich K, Gosselink A, Kinkhabwala A, Gremse F, Bleilevens C, Bigott K, Jungblut M, Hardt O, Alves F, Al Rawashdeh W. A multimodal imaging workflow for monitoring CAR T cell therapy against solid tumor from whole-body to single-cell level. Am J Cancer Res 2022; 12:4834-4850. [PMID: 35836798 PMCID: PMC9274742 DOI: 10.7150/thno.68966] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 05/19/2022] [Indexed: 01/12/2023] Open
Abstract
CAR T cell research in solid tumors often lacks spatiotemporal information and therefore, there is a need for a molecular tomography to facilitate high-throughput preclinical monitoring of CAR T cells. Furthermore, a gap exists between macro- and microlevel imaging data to better assess intratumor infiltration of therapeutic cells. We addressed this challenge by combining 3D µComputer tomography bioluminescence tomography (µCT/BLT), light-sheet fluorescence microscopy (LSFM) and cyclic immunofluorescence (IF) staining. Methods: NSG mice with subcutaneous AsPC1 xenograft tumors were treated with EGFR CAR T cell (± IL-2) or control BDCA-2 CAR T cell (± IL-2) (n = 7 each). Therapeutic T cells were genetically modified to co-express the CAR of interest and the luciferase CBR2opt. IL-2 was administered s.c. under the xenograft tumor on days 1, 3, 5 and 7 post-therapy-initiation at a dose of 25,000 IU/mouse. CAR T cell distribution was measured in 2D BLI and 3D µCT/BLT every 3-4 days. On day 6, 4 tumors were excised for cyclic IF where tumor sections were stained with a panel of 25 antibodies. On day 6 and 13, 8 tumors were excised from rhodamine lectin-preinjected mice, permeabilized, stained for CD3 and imaged by LSFM. Results: 3D µCT/BLT revealed that CAR T cells pharmacokinetics is affected by antigen recognition, where CAR T cell tumor accumulation based on target-dependent infiltration was significantly increased in comparison to target-independent infiltration, and spleen accumulation was delayed. LSFM supported these findings and revealed higher T cell accumulation in target-positive groups at day 6, which also infiltrated the tumor deeper. Interestingly, LSFM showed that most CAR T cells accumulate at the tumor periphery and around vessels. Surprisingly, LSFM and cyclic IF revealed that local IL-2 application resulted in early-phase increased proliferation, but long-term overstimulation of CAR T cells, which halted the early added therapeutic effect. Conclusion: Overall, we demonstrated that 3D µCT/BLT is a valuable non-isotope-based technology for whole-body cell therapy monitoring and investigating CAR T cell pharmacokinetics. We also presented combining LSFM and MICS for ex vivo 3D- and 2D-microscopy tissue analysis to assess intratumoral therapeutic cell distribution and status.
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Affiliation(s)
- Rita Pfeifer
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany
| | - Janina Henze
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany.,University Medical Center Göttingen, Translational Molecular Imaging, Institute for Diagnostic and Interventional Radiology & Clinic for Haematology and Medical Oncology, Göttingen, Lower Saxony, Germany
| | - Katharina Wittich
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany
| | - Andre Gosselink
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany.,Institute of Medical Statistics and Computational Biology, University of Cologne, Cologne, North Rhine-Westphalia, Germany
| | - Ali Kinkhabwala
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany
| | - Felix Gremse
- Gremse-IT GmbH, Aachen, North Rhine-Westphalia, Germany
| | - Cathrin Bleilevens
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany
| | - Kevin Bigott
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany
| | - Melanie Jungblut
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany
| | - Olaf Hardt
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany
| | - Frauke Alves
- University Medical Center Göttingen, Translational Molecular Imaging, Institute for Diagnostic and Interventional Radiology & Clinic for Haematology and Medical Oncology, Göttingen, Lower Saxony, Germany.,Max-Planck-Institute for Multidisciplinary Science, Translational Molecular Imaging, Göttingen, Lower Saxony, Germany
| | - Wa'el Al Rawashdeh
- Miltenyi Biotec B.V. & Co. KG, R&D Reagents, Bergisch Gladbach, North Rhine-Westphalia, Germany.,Ossium Health Inc, Indianapolis, Indiana, United States of America.,✉ Corresponding author: E-mail: (W.A.)
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Möhlhenrich SC, Kniha K, Magnuska Z, Chhatwani S, Hermanns-Sachweh B, Gremse F, Hölzle F, Danesh G, Modabber A. Development of root resorption during orthodontic tooth movement after cleft repair using different grafting materials in rats. Clin Oral Investig 2022; 26:5809-5821. [PMID: 35567639 PMCID: PMC9474460 DOI: 10.1007/s00784-022-04537-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 05/03/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVE The aim of the present study was to investigate the influence of three grafting materials for cleft repair on orthodontic tooth movement in rats. MATERIALS AND METHODS Artificial alveolar clefts were created in 21 Wistar rats and were repaired 4 weeks later using autografts, human xenografts and synthetic bone substitute (beta-tricalcium phosphate/hydroxyapatite [β-TCP/HA]). A further 4 weeks later, the first molar was moved into the reconstructed maxilla. Microfocus computed tomography (μCT) was performed six times (T0-T5) to assess the tooth movement and root resorption. After 8 weeks, the affected reconstructed jaw was resected for histopathological investigation. RESULTS Total distances reached ranged from 0.82 ± 0.72 mm (β-TCP/HA) to 0.67 ± 0.27 mm (autograft). The resorption was particularly determined at the mesiobuccal root. Descriptive tooth movement slowed and root resorption increased slightly. However, neither the radiological changes during tooth movement (µCT T1 vs. µCT T5: autograft 1.85 ± 0.39 mm3 vs. 2.38 ± 0.35 mm3, p = 0.30; human xenograft 1.75 ± 0.45 mm3 vs. 2.17 ± 0.26 mm3, p = 0.54; β-TCP/HA: 1.52 ± 0.42 mm3 vs. 1.88 ± 0.41 mm3, p = 0.60) nor the histological differences after tooth movement (human xenograft: 0.078 ± 0.05 mm2; β-TCP/HA: 0.067 ± 0.049 mm2; autograft: 0.048 ± 0.015 mm2) were statistically significant. CONCLUSION The autografts, human xenografts or synthetic bone substitute used for cleft repair seem to have a similar effect on the subsequent orthodontic tooth movement and the associated root resorptions. CLINICAL RELEVANCE Development of root resorptions seems to have a secondary role in choosing a suitable grafting material for cleft repair.
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Affiliation(s)
| | - Kristian Kniha
- Department of Oral and Maxillofacial Surgery, University Hospital of Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Zuzanna Magnuska
- Institute for Experimental Molecular Imaging, Department of Nanomedicine and Theragnostic, RWTH Aachen University, Forckenbeckstraße 55, 52074, Aachen, Germany
| | - Sachin Chhatwani
- Department of Orthodontics, University of Witten/Herdecke, Alfred-Herrhausen Str. 45, 58455, Witten, Germany
| | | | - Felix Gremse
- Institute for Experimental Molecular Imaging, Department of Nanomedicine and Theragnostic, RWTH Aachen University, Forckenbeckstraße 55, 52074, Aachen, Germany
| | - Frank Hölzle
- Department of Oral and Maxillofacial Surgery, University Hospital of Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Gholamreza Danesh
- Department of Orthodontics, University of Witten/Herdecke, Alfred-Herrhausen Str. 45, 58455, Witten, Germany
| | - Ali Modabber
- Department of Oral and Maxillofacial Surgery, University Hospital of Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
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Richter B, Zafarnia S, Gremse F, Kießling F, Scheuerlein H, Settmacher U, Dahmen U. Corrosion Cast and 3D Reconstruction of the Murine Biliary Tree After Biliary Obstruction: Quantitative Assessment and Comparison With 2D Histology. J Clin Exp Hepatol 2022; 12:755-766. [PMID: 35677523 PMCID: PMC9168744 DOI: 10.1016/j.jceh.2021.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 12/10/2021] [Indexed: 12/12/2022] Open
Abstract
Background Obstructive cholestasis can lead to significant alterations of the biliary tree depending on the extent and duration of the biliary occlusion. Current experimental studies reported about advanced techniques for corrosion cast and 3D reconstruction (3D-reco) visualizing delicate microvascular structures in animals. We compared these two different techniques for visualization and quantitative assessment of the obstructed murine biliary tree with classical 2D histology. Methods Male mice (n = 36) were allocated to 3 different experiments. In experiments 1 and 2, we injected two different media (Microfil© for 3D-reco, MV; Batson's No.17 for corrosion cast, CC) into the extrahepatic bile duct. In experiment 3 we sampled liver tissue for 2D histology (HE, BrdU). Time points of interest were days 1, 3, 5, 7, 14, and 28 after biliary occlusion. We used different types of software for quantification of the different samples: IMALYTICS Preclinical for 3D scans (MV); NDP.view2 for the digital photography of CC; HistoKat software for 2D histology. Results We achieved samples in 75% of the animals suitable for evaluation (MV and CC, each with 9/12). Contrasting of terminal bile ducts (4th order of branches) was achieved with either technique. MV permitted a fast 3D-reco of the hierarchy of the biliary tree, including the 3rd and 4th order of branches in almost all samples (8/9 and 6/9). CC enabled focused evaluation of the hierarchy of the biliary tree, including the 4th to 5th order of branches in almost all samples (9/9 and 8/9). In addition, we detected dense meshes of the smallest bile ducts in almost all CC samples (8/9). MV and CC allowed a quantitative assessment of anatomical details of the 3rd and 4th order branches of almost every sample. The 2D histology identified different kinetics and areas of proliferation of hepatocytes and cholangiocytes. Complementary usage of 3D-reco, corrosion casting and 2D histology matched dense meshes of small bile ducts with areas of intensive proliferative activity of cholangiocytes as periportal proliferative areas of 4th and 5th order branches (∼terminal bile ducts and bile ductules) matched with its morphological information the matching assessment of areas with increased proliferative activity (BrdU) and a partial quantification of the characteristics of the 4th order branches of the biliary tree. Conclusion The 3D-reco and corrosion casting of the murine biliary tree are feasible and provide a straightforward, robust, and reliable (and more economical) procedure for the visualization and quantitative assessment of architectural alterations, in comparative usage with the 2D histology.
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Key Words
- 2D IHC, two-dimensional immunohistochemistry
- 3D reconstruction
- 3D-reco, three-dimensional reconstruction
- BD, bile duct
- BT, extrahepatic and intrahepatic biliary tree
- BrdU, Bromodeoxyuridine
- CC, Corrosion Cast using Batson No.17
- CoH, Canals of Hering
- DHC, Ductus hepatocholedochus, main extrahepatic bile duct
- HE, Haematoxylin-Eosin
- MV, Microfil®-MV
- POD, postoperative day
- biliary occlusion
- biliary tree
- corrosion cast
- ehBD, extrahepatic bile duct
- ihBD, intrahepatic bile duct
- microfil
- periportal segments
- tBDT, bile duct ligation (using three sutures) with transection of the ligated extrahepatic bile duct between the middle and proximal sutures
- μCT, micro Computer Tomography (micro-CT)
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Affiliation(s)
- Beate Richter
- Department of General, Visceral and Vascular Surgery, Experimental Transplantation Surgery, University Hospital Jena, Drackendorfer Strasse 1, 07747, Jena, Germany
- Department of General, Visceral and Vascular Surgery, University Jena, Am Klinikum 1, 07747 Jena, Germany
| | - Sarah Zafarnia
- Institute for Experimental Molecular Imaging, RWTH University Hospital Aachen, Templergraben 55, 52056, Aachen, Germany
| | - Felix Gremse
- Institute for Experimental Molecular Imaging, RWTH University Hospital Aachen, Templergraben 55, 52056, Aachen, Germany
| | - Fabian Kießling
- Institute for Experimental Molecular Imaging, RWTH University Hospital Aachen, Templergraben 55, 52056, Aachen, Germany
- Fraunhofer Institute for Digital Medicine MEVIS, Max-von-Laue-Str. 2, 28359 Bremen, Germany
| | - Hubert Scheuerlein
- Clinic for General, Visceral and Pediatric Surgery, St. Vincenz Hospital Paderborn, Teaching Hospital of the University of Göttingen, Am Busdorf 2, 33098 Paderborn, Germany
| | - Utz Settmacher
- Department of General, Visceral and Vascular Surgery, University Jena, Am Klinikum 1, 07747 Jena, Germany
| | - Uta Dahmen
- Department of General, Visceral and Vascular Surgery, Experimental Transplantation Surgery, University Hospital Jena, Drackendorfer Strasse 1, 07747, Jena, Germany
- Department of General, Visceral and Vascular Surgery, University Jena, Am Klinikum 1, 07747 Jena, Germany
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Richter B, Sänger C, Mussbach F, Scheuerlein H, Settmacher U, Dahmen U. The Interplay Between Biliary Occlusion and Liver Regeneration: Repeated Regeneration Stimuli Restore Biliary Drainage by Promoting Hepatobiliary Remodeling in a Rat Model. Front Surg 2022; 9:799669. [PMID: 35548189 PMCID: PMC9081651 DOI: 10.3389/fsurg.2022.799669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 03/21/2022] [Indexed: 12/04/2022] Open
Abstract
Background and Aims Patients with malignant biliary obstruction do not seem to benefit from “two-stage hepatectomy” due to an impairment of liver regeneration. We designed a novel model of “repeated regeneration stimuli” in rats mimicking a “two-stage hepatectomy” with selective or complete biliary occlusion mimicking Klatskin tumors III° or IV°. Using this new model, we wanted to investigate (1) the impact of preexistent cholestasis of different extent on the time course of liver regeneration and (2) the dynamics of hepatobiliary remodeling under regeneration conditions. Materials and Methods Rats were subjected to a sequence of three operations: surgical induction of biliary occlusion, followed by “repeated regeneration stimuli” consisting of ligation of the left branch of the portal vein (supplying 70% of the liver volume, sPVL) as first stage and a 70%-hepatectomy (70%PHx) as second stage. Biliary occlusion (1st procedure) was induced by ligating and transection of either the common (100%, tBDT) or the left bile duct (70%, sBDT). A sham operation without ligating the bile duct was performed as control (0%, Sham). Two weeks later, on day 14 (POD14), the sPVL (2nd procedure) was performed. Another week later (POD 21), the 70%PHx (3rd procedure) took place and animals were observed for 1 week (POD 28). The first experiment (n = 45 rats) was dedicated to investigating liver regeneration (hypertrophy/atrophy), proliferative activity and hepatobiliary histomorphology (2D-histology: HE, BrdU) in the future liver remnant (FLR). The second experiment (n = 25 rats) was performed to study the dynamics of hepatobiliary remodeling in livers with different regenerative pressure (tBDT only POD21 vs. tBDT only POD 28 vs. tBDT + sPVL vs. tBDT + 70%PHx vs. tBDT + sPVL + 70%PHx) using μCT scans of explanted livers. Results Effect of biliary occlusion Total biliary occlusion (tBDT) led to a 2.4-fold increase in whole liver volume due to severe biliary proliferation within 14 days. In contrast, partial biliary occlusion (sBDT) caused only a volume gain of the obstructed liver lobes due to biliary proliferates, resulting in a minor increase of total liver volume (1.7-fold) without an increase in bilirubin levels. Liver regeneration and atrophy As expected, sPVL caused substantial volume gain (tBDT: 3-fold; sBDT: 2.8-fold; Sham 2.8-fold) of FLR and a substantial volume loss (tBDT: 0.9-fold; sBDT: 0.6-fold; Sham: 0.4-fold) of the portally deprived “future resected lobes” compared to the preoperative liver volume. The subsequent 70%PHx promoted a further volume gain of the FLR in all groups (tBDT: 4-fold; sBDT: 3-fold; Sham 3-fold compared to original volume) until POD 28. Hepatobiliary remodeling: After tBDT, we identified histologically three phases of hepatobiliary remodeling in the FLR. Following tBDT, biliary proliferates developed, replacing about 15% of the hepatocellular tissue. After sPVL we found incomplete restoration of the hepatocellular tissue with a visible reduction of the biliary proliferates. The 70%PHx led to an almost complete recovery of the hepatocellular tissue in the FLR with a nearly normal liver architecture. In contrast, after sBDT and Sham we observed a near normal liver morphology in the FLR at all time points. CT-scanning of the explanted livers and subsequent 3D reconstruction visualized the development of extrahepatic biliary collaterals. Collaterals were detected in 0/5 cases 1 week after sPVL (first regeneration stimulus), and in even more cases (3/5) 1 week after the 70%PHx (second regeneration stimulus). Histological workup identified the typical biliary cuboid epithelium as inner lining of the collaterals and peribiliary glands. Conclusion Liver volume of the FLR increased in cholestatic rats mainly due to biliary proliferates. Application of repeated regeneration stimuli in the style of a “two-stage hepatectomy” promoted almost full restoration of hepatocellular tissue and architecture in the FLR by reestablishing biliary drainage via formation of biliary collaterals. Further exploration of the dynamics in hepatobiliary modeling using this model might help to better understand the underlying mechanism.
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Affiliation(s)
- Beate Richter
- Department of General, Visceral and Vascular Surgery, University Hospital Jena, Jena, Germany
- *Correspondence: Beate Richter
| | - Constanze Sänger
- Department of General, Visceral and Vascular Surgery, University Hospital Jena, Jena, Germany
| | - Franziska Mussbach
- Department of General, Visceral and Vascular Surgery, University Hospital Jena, Jena, Germany
| | - Hubert Scheuerlein
- Clinic for General, Visceral and Paediatric Surgery, St. Vincenz Hospital Paderborn, University of Göttingen, Paderborn, Germany
| | - Utz Settmacher
- Department of General, Visceral and Vascular Surgery, University Hospital Jena, Jena, Germany
| | - Uta Dahmen
- Department of General, Visceral and Vascular Surgery, University Hospital Jena, Jena, Germany
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Biancacci I, De Lorenzi F, Theek B, Bai X, May J, Consolino L, Baues M, Moeckel D, Gremse F, von Stillfried S, El Shafei A, Benderski K, Azadkhah Shalmani A, Wang A, Momoh J, Peña Q, Buhl EM, Buyel J, Hennink W, Kiessling F, Metselaar J, Shi Y, Lammers T. Monitoring EPR Effect Dynamics during Nanotaxane Treatment with Theranostic Polymeric Micelles. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103745. [PMID: 35072358 PMCID: PMC8981450 DOI: 10.1002/advs.202103745] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 01/09/2022] [Indexed: 06/14/2023]
Abstract
Cancer nanomedicines rely on the enhanced permeability and retention (EPR) effect for efficient target site accumulation. The EPR effect, however, is highly heterogeneous among different tumor types and cancer patients and its extent is expected to dynamically change during the course of nanochemotherapy. Here the authors set out to longitudinally study the dynamics of the EPR effect upon single- and double-dose nanotherapy with fluorophore-labeled and paclitaxel-loaded polymeric micelles. Using computed tomography-fluorescence molecular tomography imaging, it is shown that the extent of nanomedicine tumor accumulation is predictive for therapy outcome. It is also shown that the interindividual heterogeneity in EPR-based tumor accumulation significantly increases during treatment, especially for more efficient double-dose nanotaxane therapy. Furthermore, for double-dose micelle therapy, tumor accumulation significantly increased over time, from 7% injected dose per gram (ID g-1 ) upon the first administration to 15% ID g-1 upon the fifth administration, contributing to more efficient inhibition of tumor growth. These findings shed light on the dynamics of the EPR effect during nanomedicine treatment and they exemplify the importance of using imaging in nanomedicine treatment prediction and clinical translation.
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Affiliation(s)
- Ilaria Biancacci
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Federica De Lorenzi
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Benjamin Theek
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Xiangyang Bai
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Jan‐Niklas May
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Lorena Consolino
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Maike Baues
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Diana Moeckel
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Felix Gremse
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
- Gremse‐IT GmbHAachen52068Germany
| | - Saskia von Stillfried
- Institute of PathologyMedical FacultyRWTH Aachen University ClinicAachen52074Germany
| | - Asmaa El Shafei
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Karina Benderski
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Armin Azadkhah Shalmani
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Alec Wang
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Jeffrey Momoh
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Quim Peña
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Eva Miriam Buhl
- Electron Microscopy FacilityInstitute of PathologyRWTH University HospitalAachen52074Germany
| | - Johannes Buyel
- Fraunhofer Institute for Molecular Biology and Applied Ecology IMEAachen52074Germany
- Institute of Molecular BiotechnologyRWTH Aachen UniversityAachen52074Germany
| | - Wim Hennink
- Department of PharmaceuticsUtrecht Institute for Pharmaceutical SciencesUtrecht UniversityUtrecht3584 CGThe Netherlands
| | - Fabian Kiessling
- Institute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
- Fraunhofer Institute for Medical Image Computing MEVISBremen28359Germany
| | - Josbert Metselaar
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Yang Shi
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
| | - Twan Lammers
- Department of Nanomedicine and TheranosticsInstitute for Experimental Molecular ImagingRWTH Aachen University ClinicAachen52074Germany
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Leibold S, Bagivalu Lakshminarasimha A, Gremse F, Hammerschmidt M, Michel M. Long-term obesogenic diet leads to metabolic phenotypes which are not exacerbated by catch-up growth in zebrafish. PLoS One 2022; 17:e0267933. [PMID: 35544474 PMCID: PMC9094543 DOI: 10.1371/journal.pone.0267933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 04/19/2022] [Indexed: 11/18/2022] Open
Abstract
Obesity and metabolic syndrome are of increasing global concern. In order to understand the basic biology and etiology of obesity, research has turned to animals across the vertebrate spectrum including zebrafish. Here, we carefully characterize zebrafish in a long-term obesogenic environment as well as zebrafish that went through early lifetime caloric restriction. We found that long-term obesity in zebrafish leads to metabolic endpoints comparable to mammals including increased adiposity, weight, hepatic steatosis and hepatic lesions but not signs of glucose dysregulation or differences in metabolic rate or mitochondrial function. Malnutrition in early life has been linked to an increased likelihood to develop and an exacerbation of metabolic syndrome, however fish that were calorically restricted from five days after fertilization until three to nine months of age did not show signs of an exacerbated phenotype. In contrast, the groups that were shifted later in life from caloric restriction to the obesogenic environment did not completely catch up to the long-term obesity group by the end of our experiment. This dataset provides insight into a slowly exacerbating time-course of obesity phenotypes.
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Affiliation(s)
- Sandra Leibold
- Institute of Zoology, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, Cologne, Germany
| | | | - Felix Gremse
- Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Aachen, Germany
- Gremse-IT GmbH, Aachen, Germany
| | - Matthias Hammerschmidt
- Institute of Zoology, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany
| | - Maximilian Michel
- Institute of Zoology, University of Cologne, Cologne, Germany
- * E-mail:
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Rix A, Piepenbrock M, Flege B, von Stillfried S, Koczera P, Opacic T, Simons N, Boor P, Thoröe-Boveleth S, Deckers R, May JN, Lammers T, Schmitz G, Stickeler E, Kiessling F. Effects of contrast-enhanced ultrasound treatment on neoadjuvant chemotherapy in breast cancer. Theranostics 2021; 11:9557-9570. [PMID: 34646386 PMCID: PMC8490514 DOI: 10.7150/thno.64767] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/04/2021] [Indexed: 12/31/2022] Open
Abstract
Purpose: Preclinical and clinical data indicate that contrast-enhanced ultrasound can enhance tumor perfusion and vessel permeability, thus, improving chemotherapy accumulation and therapeutic outcome. Therefore, we investigated the effects of high mechanical index (MI) contrast-enhanced Doppler ultrasound (CDUS) on tumor perfusion in breast cancer. Methods: In this prospective study, breast cancer patients were randomly assigned to receive either 18 minutes of high MI CDUS during chemotherapy infusion (n = 6) or chemotherapy alone (n = 5). Tumor perfusion was measured before and after at least six chemotherapy cycles using motion-model ultrasound localization microscopy. Additionally, acute effects of CDUS on vessel perfusion and chemotherapy distribution were evaluated in mice bearing triple-negative breast cancer (TNBC). Results: Morphological and functional vascular characteristics of breast cancer in patients were not significantly influenced by high MI CDUS. However, complete clinical tumor response after neoadjuvant chemotherapy was lower in high MI CDUS-treated (1/6) compared to untreated patients (4/5) and size reduction of high MI CDUS treated tumors tended to be delayed at early chemotherapy cycles. In mice with TNBC high MI CDUS decreased the perfused tumor vessel fraction (p < 0.01) without affecting carboplatin accumulation or distribution. Higher vascular immaturity and lower stromal stabilization may explain the stronger vascular response in murine than human tumors. Conclusion: High MI CDUS had no detectable effect on breast cancer vascularization in patients. In mice, the same high MI CDUS setting did not affect chemotherapy accumulation although strong effects on the tumor vasculature were detected histologically. Thus, sonopermeabilization in human breast cancers might not be effective using high MI CDUS protocols and future applications may rather focus on low MI approaches triggering microbubble oscillations instead of destruction. Furthermore, our results show that there are profound differences in the response of mouse and human tumor vasculature to high MI CDUS, which need to be further explored and considered in clinical translation.
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Affiliation(s)
- Anne Rix
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Marion Piepenbrock
- Chair for Medical Engineering, Department of Electrical Engineering and Information Technology, Ruhr University Bochum, Bochum, Germany
| | - Barbara Flege
- Department of Obstetrics and Gynecology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | | | - Patrick Koczera
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
- Department of Intensive Care and Intermediate Care, Medical Faculty, University Hospital RWTH Aachen, Aachen, Germany
| | - Tatjana Opacic
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Nina Simons
- Department of Obstetrics and Gynecology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Peter Boor
- Institute of Pathology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Sven Thoröe-Boveleth
- Institute for Occupational, Social and Environmental Medicine; Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Roel Deckers
- Division of Imaging and Oncology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jan-Niklas May
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Twan Lammers
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Georg Schmitz
- Chair for Medical Engineering, Department of Electrical Engineering and Information Technology, Ruhr University Bochum, Bochum, Germany
| | - Elmar Stickeler
- Department of Obstetrics and Gynecology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging, Medical Faculty, RWTH Aachen University, Aachen, Germany
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van Gaalen K, Gremse F, Benn F, McHugh PE, Kopp A, Vaughan TJ. Automated ex-situ detection of pitting corrosion and its effect on the mechanical integrity of rare earth magnesium alloy - WE43. Bioact Mater 2021; 8:545-558. [PMID: 34541419 PMCID: PMC8435990 DOI: 10.1016/j.bioactmat.2021.06.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/09/2021] [Accepted: 06/22/2021] [Indexed: 01/26/2023] Open
Abstract
This study develops a three-dimensional automated detection framework (PitScan) that systematically evaluates the severity and phenomenology of pitting corrosion. This framework uses a python-based algorithm to analyse microcomputer-tomography scans (μCT) of cylindrical specimens undergoing corrosion. The approach systematically identifies several surface-based corrosion features, enabling full spatial characterisation of pitting parameters, including pit density, pit size, pit depth as well as pitting factor according to ASTM G46-94. Furthermore, it is used to evaluate pitting formation in tensile specimens of a Rare Earth Magnesium alloy undergoing corrosion, and relationships between key pitting parameters and mechanical performance are established. Results demonstrated that several of the parameters described in ASTM G46-94, including pit number, pit density and pitting factor, showed little correlation to mechanical performance. However, this study did identify that other parameters showed strong correlations with the ultimate tensile strength and these tended to be directly linked to the reduction of the cross-sectional area of the specimen. Specifically, our results indicate, that parameters directly linked to the loss of the cross-sectional area (e.g. minimum material width), are parameters that are most suited to provide an indication of a specimen's mechanical performance. The automated detection framework developed in this study has the potential to provide a basis to standardise measurements of pitting corrosion across a range of metals and future prediction of mechanical strength over degradation time. In-vitro immersion study of dog bones manufactured from a WE43 Magnesium alloy. Novel approach characterizing spatial pit formation using micro-CT scans. Comparison of mass loss by hydrogen gas measurement and volume loss by μCT scans. Correlation between mechanical strength and geometrical pit formation features.
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Affiliation(s)
- Kerstin van Gaalen
- Biomechanics Research Centre (BioMEC), Biomedical Engineering, School of Engineering, College of Science and Engineering, National University of Ireland Galway, Galway, Ireland.,Meotec GmbH, Aachen, Germany
| | - Felix Gremse
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany
| | - Felix Benn
- School of Mechanical and Aerospace Engineering, Queen's University Belfast, Belfast, United Kingdom.,Meotec GmbH, Aachen, Germany
| | - Peter E McHugh
- Biomechanics Research Centre (BioMEC), Biomedical Engineering, School of Engineering, College of Science and Engineering, National University of Ireland Galway, Galway, Ireland
| | | | - Ted J Vaughan
- Biomechanics Research Centre (BioMEC), Biomedical Engineering, School of Engineering, College of Science and Engineering, National University of Ireland Galway, Galway, Ireland
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Petsophonsakul P, Burgmaier M, Willems B, Heeneman S, Stadler N, Gremse F, Reith S, Burgmaier K, Kahles F, Marx N, Natour E, Bidar E, Jacobs M, Mees B, Reutelingsperger C, Furmanik M, Schurgers L. Nicotine promotes vascular calcification via intracellular Ca2+-mediated, Nox5-induced oxidative stress and extracellular vesicle release in vascular smooth muscle cells. Cardiovasc Res 2021; 118:2196-2210. [PMID: 34273166 PMCID: PMC9302892 DOI: 10.1093/cvr/cvab244] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 07/15/2021] [Indexed: 01/10/2023] Open
Abstract
Aims Smokers are at increased risk of cardiovascular events. However, the exact mechanisms through which smoking influences cardiovascular disease resulting in accelerated atherosclerosis and vascular calcification are unknown. The aim of this study was to investigate effects of nicotine on initiation of vascular smooth muscle cell (VSMC) calcification and to elucidate underlying mechanisms. Methods and results We assessed vascular calcification of 62 carotid lesions of both smoking and non-smoking patients using ex vivo micro-computed tomography (µCT) scanning. Calcification was present more often in carotid plaques of smokers (n = 22 of 30, 73.3%) compared to non-smokers (n = 11 of 32, 34.3%; P < 0.001), confirming higher atherosclerotic burden. The difference was particularly profound for microcalcifications, which was 17-fold higher in smokers compared to non-smokers. In vitro, nicotine-induced human primary VSMC calcification, and increased osteogenic gene expression (Runx2, Osx, BSP, and OPN) and extracellular vesicle (EV) secretion. The pro-calcifying effects of nicotine were mediated by Ca2+-dependent Nox5. SiRNA knock-down of Nox5 inhibited nicotine-induced EV release and calcification. Moreover, pre-treatment of hVSMCs with vitamin K2 ameliorated nicotine-induced intracellular oxidative stress, EV secretion, and calcification. Using nicotinic acetylcholine receptor (nAChR) blockers α-bungarotoxin and hexamethonium bromide, we found that the effects of nicotine on intracellular Ca2+ and oxidative stress were mediated by α7 and α3 nAChR. Finally, we showed that Nox5 expression was higher in carotid arteries of smokers and correlated with calcification levels in these vessels. Conclusion In this study, we provide evidence that nicotine induces Nox5-mediated pro-calcific processes as novel mechanism of increased atherosclerotic calcification. We identified that activation of α7 and α3 nAChR by nicotine increases intracellular Ca2+ and initiates calcification of hVSMCs through increased Nox5 activity, leading to oxidative stress-mediated EV release. Identifying the role of Nox5-induced oxidative stress opens novel avenues for diagnosis and treatment of smoking-induced cardiovascular disease.
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Affiliation(s)
- Ploingarm Petsophonsakul
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, The Netherlands
| | - Mathias Burgmaier
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, The Netherlands.,Department of Cardiology, Medical Clinic I, University Hospital of the RWTH Aachen, Germany
| | - Brecht Willems
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, The Netherlands
| | - Sylvia Heeneman
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University, The Netherlands
| | - Nadina Stadler
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University, The Netherlands
| | - Felix Gremse
- Experimental Molecular Imaging, University Hospital of the RWTH Aachen, Germany
| | - Sebastian Reith
- Department of Cardiology, St. Franziskus Hospital Münster, Münster, Germany
| | - Kathrin Burgmaier
- Department of Pediatrics, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne Germany
| | - Florian Kahles
- Department of Cardiology, Medical Clinic I, University Hospital of the RWTH Aachen, Germany
| | - Nikolaus Marx
- Department of Cardiology, Medical Clinic I, University Hospital of the RWTH Aachen, Germany
| | - Ehsan Natour
- Department of Cardiovascular Surgery, Maastricht University Medical Center (MUMC), Maastricht, the Netherlands.,European Vascular Center Aachen-Maastricht, Maastricht, the Netherlands
| | - Elham Bidar
- Department of Cardiovascular Surgery, Maastricht University Medical Center (MUMC), Maastricht, the Netherlands.,European Vascular Center Aachen-Maastricht, Maastricht, the Netherlands
| | - Michael Jacobs
- European Vascular Center Aachen-Maastricht, Maastricht, the Netherlands.,Department of Vascular Surgery, Maastricht University Medical Center (MUMC), Maastricht, the Netherlands
| | - Barend Mees
- European Vascular Center Aachen-Maastricht, Maastricht, the Netherlands.,Department of Vascular Surgery, Maastricht University Medical Center (MUMC), Maastricht, the Netherlands
| | - Chris Reutelingsperger
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, The Netherlands
| | - Malgorzata Furmanik
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, The Netherlands
| | - Leon Schurgers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, The Netherlands.,Institute of Experimental Medicine and Systems Biology, RWTH Aachen University, Aachen, Germany
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Mixing Matrix-corrected Whole-body Pharmacokinetic Modeling Using Longitudinal Micro-computed Tomography and Fluorescence-mediated Tomography. Mol Imaging Biol 2021; 23:963-974. [PMID: 34231106 PMCID: PMC8578052 DOI: 10.1007/s11307-021-01623-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/30/2021] [Accepted: 06/06/2021] [Indexed: 10/29/2022]
Abstract
PURPOSE Pharmacokinetic modeling can be applied to quantify the kinetics of fluorescently labeled compounds using longitudinal micro-computed tomography and fluorescence-mediated tomography (μCT-FMT). However, fluorescence blurring from neighboring organs or tissues and the vasculature within tissues impede the accuracy in the estimation of kinetic parameters. Contributions of elimination and retention activities of fluorescent probes inside the kidneys and liver can be hard to distinguish by a kinetic model. This study proposes a deconvolution approach using a mixing matrix to model fluorescence contributions to improve whole-body pharmacokinetic modeling. PROCEDURES In the kinetic model, a mixing matrix was applied to unmix the fluorescence blurring from neighboring tissues and blood vessels and unmix the fluorescence contributions of elimination and retention in the kidney and liver compartments. Accordingly, the kinetic parameters of the hepatobiliary and renal elimination routes and five major retention sites (the kidneys, liver, bone, spleen, and lung) were investigated in simulations and in an in vivo study. In the latter, the pharmacokinetics of four fluorescently labeled compounds (indocyanine green (ICG), HITC-iodide-microbubbles (MB), Cy7-nanogels (NG), and OsteoSense 750 EX (OS)) were evaluated in BALB/c nude mice. RESULTS In the simulations, the corrected modeling resulted in lower relative errors and stronger linear relationships (slopes close to 1) between the estimated and simulated parameters, compared to the uncorrected modeling. For the in vivo study, MB and NG showed significantly higher hepatic retention rates (P<0.05 and P<0.05, respectively), while OS had smaller renal and hepatic retention rates (P<0.01 and P<0.01, respectively). Additionally, the bone retention rate of OS was significantly higher (P<0.01). CONCLUSIONS The mixing matrix correction improves pharmacokinetic modeling and thus enables a more accurate assessment of the biodistribution of fluorescently labeled pharmaceuticals by μCT-FMT.
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Evaluation of different grafting materials for alveolar cleft repair in the context of orthodontic tooth movement in rats. Sci Rep 2021; 11:13586. [PMID: 34193933 PMCID: PMC8245488 DOI: 10.1038/s41598-021-93033-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 06/09/2021] [Indexed: 12/05/2022] Open
Abstract
To minimize the postoperative risks posed by grafting autologous transplants for cleft repair, efforts are being made to improve grafting materials for use as potential alternatives. The aim of this study was to compare the bone graft quality of different bone substitutes including the gold standard autografts during the healing processes after cleft repair in the context of orthodontic treatment. In 21 Wistar rats, a complete, continuity-interrupting cleft was created. After 4 weeks, cleft repair was performed using autografts from the hips’ ischial tuberosity, human xenografts, or synthetic bone substitutes [beta-tricalcium phosphate (β-TCP)/hydroxyapatite (HA)]. After another 4 weeks, the first molar movement was initiated in the reconstructed jaw for 8 weeks. The bone remodeling was analyzed in vivo using micro-computed tomography (bone mineral density and bone volume fraction) and histology (new bone formation). All the grafting materials were statistically different in bone morphology, which changed during the treatment period. The β-TCP/HA substitute demonstrated less resorption compared to the autologous and xenogeneic/human bone, and the autografts led to a stronger reaction in the surrounding bone. Histologically, the highest level of new bone formation was found in the human xenografts, and the lowest was found in the β-TCP/HA substitute. The differences between the two bone groups and the synthetic materials were statistically significant. Autografts were confirmed to be the gold standard in cleft repair with regard to graft integration. However, parts of the human xenograft seemed comparable to the autografts. Thus, this substitute could perhaps be used as an alternative after additional tissue-engineered modification.
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Abstract
PURPOSE Evaluation of [68Ga]NODAGA-duramycin as a positron emission tomography (PET) tracer of cell death for whole-body detection of chemotherapy-induced organ toxicity. PROCEDURES Tracer specificity of Ga-68 labeled NODAGA-duramycin was determined in vitro using competitive binding experiments. Organ uptake was analyzed in untreated and doxorubicin, busulfan, and cisplatin-treated mice 2 h after intravenous injection of [68Ga]NODAGA-duramycin. In vivo data were validated by immunohistology and blood parameters. RESULTS In vitro experiments confirmed specific binding of [68Ga]NODAGA-duramycin. Organ toxicities were detected successfully using [68Ga]NODAGA-duramycin PET/X-ray computed tomography (CT) and confirmed by immunohistochemistry and blood parameter analysis. Organ toxicities in livers and kidneys showed similar trends in PET/CT and immunohistology. Busulfan and cisplatin-related organ toxicities in heart, liver, and lungs were detected earlier by PET/CT than by blood parameters and immunohistology. CONCLUSION [68Ga]NODAGA-duramycin PET/CT was successfully applied to non-invasively detect chemotherapy-induced organ toxicity with high sensitivity in mice. It, therefore, represents a promising alternative to standard toxicological analyses with a high translational potential.
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Change of Apoptosis and Glucose Metabolism in Lung Cancer Xenografts during Cytotoxic and Anti-Angiogenic Therapy Assessed by Annexin V Based Optical Imaging and 18F-FDG-PET/CT. CONTRAST MEDIA & MOLECULAR IMAGING 2021; 2021:6676337. [PMID: 34007252 PMCID: PMC8057888 DOI: 10.1155/2021/6676337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 03/08/2021] [Accepted: 03/17/2021] [Indexed: 11/17/2022]
Abstract
Methods For apoptosis imaging, the near-infrared probe Annexin Vivo750 was used in combination with fluorescence molecular tomography and microcomputed tomography (FMT/µCT). Glucose metabolism was assessed using 18F-FDG-PET/CT. Five groups of nude mice bearing lung cancer xenografts (A549) were investigated: (i) untreated controls and two groups after (ii) cytotoxic (carboplatin) or (iii) anti-angiogenic (sunitinib) treatment for four and nine days, respectively. Imaging data were validated by immunohistochemistry. Results In response to carboplatin treatment, an inverse relation was found between the change in glucose metabolism and apoptosis in A549 tumors. Annexin Vivo showed a continually increasing tumor accumulation, while the tumor-to-muscle ratio of 18F-FDG continuously decreased during therapy. Immunohistochemistry revealed a significantly higher tumor apoptosis (p=0.007) and a minor but not significant reduction in vessel density only at day 9 of carboplatin therapy. Interestingly, during anti-angiogenic treatment there was an early drop in the tumor-to-muscle ratio between days 0 and 4, followed by a subsequent minor decrease (18F-FDG tumor-to-muscle-ratio: 1.9 ± 0.4; day 4: 1.1 ± 0.2; day 9: 1.0 ± 0.2; p=0.021 and p=0.001, respectively). The accumulation of Annexin Vivo continuously increased over time (Annexin Vivo: untreated: 53.7 ± 36.4 nM; day 4: 87.2 ± 53.4 nM; day 9: 115.1 ± 103.7 nM) but failed to display the very prominent early induction of tumor apoptosis that was found by histology already at day 4 (TUNEL: p=0.0036) together with a decline in vessel density (CD31: p=0.004), followed by no significant changes thereafter. Conclusion Both molecular imaging approaches enable visualizing the effects of cytotoxic and anti-angiogenic therapy in A549 tumors. However, the early and strong tumor apoptosis induced by the anti-angiogenic agent sunitinib was more sensitively and reliably captured by monitoring of the glucose metabolism as compared to Annexin V-based apoptosis imaging.
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Bohner L, Tortamano P, Gremse F, Chilvarquer I, Kleinheinz J, Hanisch M. Assessment of Trabecular Bone During Dental Implant Planning using Cone-beam Computed Tomography with High-resolution Parameters. Open Dent J 2021. [DOI: 10.2174/1874210602115010057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background:
Cone-Beam Computed Tomography (CBCT) with high-resolution parameters may provide an acceptable resolution for bone assessment.
Objectives:
The purpose of this study is to assess trabecular bone using two cone-beam computed tomography (CBCT) devices with high-resolution parameters in comparison to micro-computed tomography (µCT).
Methods:
Bone samples (n=8) were acquired from dry mandibles and scanned by two CBCT devices: 1) VV (Veraview R100, Morita; FOV 4x4, 75kV, 9mA, voxel size 0.125µm); and PR (Prexion 3D, Prexion; FOV 5x5, 90kV, 4mA, 37s, voxel size 108µm). Gold-standard images were acquired using µCT (SkyScan 1272; Bruker; 80kV, 125mA, voxel size 16µm). Morphometric parameters (BvTv- Bone Volume Fraction, BsBv- Trabecular specific surface, TbTh- Trabecular thickness and TbSp- Trabecular separation) were measured. Statistical analysis was performed within ANOVA, Spearman Correlation test and Bland-Altmann plots with a statistical significance level at p=0.05.
Results:
CBCT devices showed similar BvTv values in comparison to µCT. No statistical difference was found for BvTv parameters assessed by CBCT devices and µCT. BsBv values were underestimated by CBCT devices (p<0.01), whereas TbTh and TbSp values were overestimated by them (p<0.01). Positive correlations were found between VV and µCT measurements for BvTv (r2= 0.65, p=0.00), such as between PR and µCT measurements for TbSp (r2= 0.50, p=0.04). For BsBv measurements, PR was negatively correlated with µCT (r2= -0.643, p=0.01).
Conclusion:
The evaluated CBCT device was able to assess trabecular bone. However, bone parameters were under or overestimated in comparison to µCT.
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Kniha K, Bock A, Peters F, Magnuska ZA, Gremse F, Möhlhenrich SC, Hölzle F, Modabber A. Microstructural volumetric analysis of the jaw following dental implantation under systemic bisphosphonate delivery: An in vivo and ex vivo rat study. J Periodontol 2020; 92:66-75. [PMID: 33258110 DOI: 10.1002/jper.20-0547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/29/2020] [Accepted: 10/27/2020] [Indexed: 11/06/2022]
Abstract
BACKGROUND Because of bisphosphonate medication, dental implantation with a subsequent infection poses a relevant risk factor to suffer from medication-related osteonecrosis of the jaw. This rat study evaluated different implant materials under systemic bisphosphonate delivery using micro-computed tomography (μCT) images. METHODS Fifty-four rats were randomly allocated into a control group 1, test group 2 with intravenous drug application of zoledronic acid and test group 3 with a subcutaneous application of alendronic acid. After 4 weeks of drug delivery, the first molar on each side of the upper jaw was extracted, and either a zirconia or a titanium implant was immediately inserted. Radiological examinations at four timepoints before the operation, 1 week later, 6 weeks later and after 12 weeks of follow up included μCT measurements of the in vivo peri-implant bone loss. μCT measurements of the ex vivo peri-implant bony structure after 12 weeks follow-up covered the bone mineral density, -volume, -trabecular thickness and -separation. RESULTS Both test groups showed a significant increase in bone loss over time (P < 0.05). The clinical observations of exposed bone revealed that most cases occurred under alendronic acid delivery. Exposed bone was recorded only in the test groups around both titanium and zirconia implants. Regarding the peri-implant bony structure, no significant differences were found between both materials. CONCLUSIONS Systemic bisphosphonate delivery led to increased peri-implant bone loss over time after immediate implant insertion. In terms of bone resorption and bone quality parameters, no implant material was superior to the other.
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Affiliation(s)
- Kristian Kniha
- Private clinic for oral and maxillofacial surgery, Kniha, Schlegel and colleagues, Munich, Germany.,Department of Oral and Cranio-Maxillofacial Surgery, University Hospital RWTH Aachen, Aachen, Germany
| | - Anna Bock
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital RWTH Aachen, Aachen, Germany
| | - Florian Peters
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital RWTH Aachen, Aachen, Germany
| | - Zuzanna Anna Magnuska
- Department of Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany
| | - Felix Gremse
- Department of Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany
| | | | - Frank Hölzle
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital RWTH Aachen, Aachen, Germany
| | - Ali Modabber
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital RWTH Aachen, Aachen, Germany
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Bohner L, Tortamano P, Meier N, Gremse F, Kleinheinz J, Hanisch M. Trabecular Bone Assessment Using Magnetic-Resonance Imaging: A Pilot Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E9282. [PMID: 33322479 PMCID: PMC7763832 DOI: 10.3390/ijerph17249282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 11/17/2022]
Abstract
The aim of this study was to assess trabecular bone morphology via magnetic-resonance imaging (MRI) using microcomputed tomography (µCT) as the control group. Porcine bone samples were scanned with T1-weighted turbo spin echo sequence imaging, using TR 25 ms, TE 3.5 ms, FOV 100 × 100 × 90, voxel size 0.22 × 0.22 × 0.50 mm, and scan time of 11:18. µCT was used as the control group with 80 kV, 125 mA, and a voxel size of 16 µm. The trabecular bone was segmented on the basis of a reference threshold value and morphological parameters. Bone volume (BV), Bone-volume fraction (BvTv), Bone specific surface (BsBv), trabecular thickness (TbTh), and trabecular separation (TbSp) were evaluated. Paired t-test and Pearson correlation test were performed at p = 0.05. MRI overestimated BV, BvTv, TbTh, and TbSp values. BsBv was the only parameter that was underestimated by MRI. High statistical correlation (r = 0.826; p < 0.05) was found for BV measurements. Within the limitations of this study, MRI overestimated trabecular bone parameters, but with a statistically significant fixed linear offset.
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Affiliation(s)
- Lauren Bohner
- Department of Cranio-Maxillofacial Surgery, University Hospital Muenster, 48149 Muenster, Germany; (J.K.); (M.H.)
- Department of Prosthodontics, School of Dentistry, University of São Paulo, São Paulo 0508-000, Brazil;
| | - Pedro Tortamano
- Department of Prosthodontics, School of Dentistry, University of São Paulo, São Paulo 0508-000, Brazil;
| | - Norbert Meier
- Institute of Clinical Radiology, University Clinics Muenster, 48149 Muenster, Germany;
| | - Felix Gremse
- Department of Experimental Molecular Imaging, Helmholtz Institute, RWTH Aachen University, 52074 Aachen, Germany;
| | - Johannes Kleinheinz
- Department of Cranio-Maxillofacial Surgery, University Hospital Muenster, 48149 Muenster, Germany; (J.K.); (M.H.)
| | - Marcel Hanisch
- Department of Cranio-Maxillofacial Surgery, University Hospital Muenster, 48149 Muenster, Germany; (J.K.); (M.H.)
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Biancacci I, Sun Q, Möckel D, Gremse F, Rosenhain S, Kiessling F, Bartneck M, Hu Q, Thewissen M, Storm G, Hennink WE, Shi Y, Rijcken CJ, Lammers T, Sofias AM. Optical imaging of the whole-body to cellular biodistribution of clinical-stage PEG-b-pHPMA-based core-crosslinked polymeric micelles. J Control Release 2020; 328:805-816. [DOI: 10.1016/j.jconrel.2020.09.046] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/25/2020] [Accepted: 09/26/2020] [Indexed: 12/31/2022]
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Möhlhenrich SC, Kniha K, Magnuska Z, Gremse F, Peters F, Danesh G, Hölzle F, Modabber A. Ischial tuberosity: new donor site for bone grafts in animal cleft research. Sci Rep 2020; 10:20699. [PMID: 33244089 PMCID: PMC7691372 DOI: 10.1038/s41598-020-77862-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 11/17/2020] [Indexed: 12/30/2022] Open
Abstract
In the context of cleft repair in animal research in rat models, different areas can be used for bone grafting. The aim of the present study was to present the tuberosity of the ischium as a new donor site and to evaluate its quality in relation to an artificial alveolar cleft. Four weeks after creating experimental alveolar clefts in seven Wistar rats, the repair was performed in the now twelve-week-old male animals using bone blocks grafted from the ischial tuberosity. Two days before surgery and two as well as twenty-eight days after surgery, microCT scans were performed, and the grafted bone blocks were analyzed regarding height, width, thickness, and volume. Additionally, bone mineral density (BMD) and bone volume fraction (BV/TV) were measured in the repaired cleft. The mean bone volume of the graft was about 19.77 ± 7.77mm3. Immediately after jaw reconstruction the BMD and BV/TV were about 0.54 ± 0.05 g/cm3 and 54.9 ± 5.07% for the transplant and about 1.13 ± 0.08 g/cm3 and 94.5 ± 3.70%, respectively, for the surrounding bone. Four weeks later the BMD and BV/TV were about 0.57 ± 0.13 g/cm3 and 56.60 ± 13.70% for the transplant and about 11.17 ± 0.07 g/cm3 and 97.50 ± 2.15%, respectively, for the surrounding bone. A hip fracture was found in four of the animals after surgery. The ischial tuberosity offers large bone blocks, which are sufficient for cleft repair in the rat model. However, the bone quality regarding BMD and BV/TV is less compared with the surrounding bone of the alveolar cleft, even after a period of 4 weeks, despite recognizable renovation processes.
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Affiliation(s)
- Stephan Christian Möhlhenrich
- Department of Orthodontics, University of Witten/Herdecke, Alfred-Herrhausen Str. 45, 58455, Witten, Germany. .,Department of Oral and Maxillofacial Surgery, University Hospital of Aachen, Pauwelsstraße 30, 52074, Aachen, Germany.
| | - Kristian Kniha
- Department of Oral and Maxillofacial Surgery, University Hospital of Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Zuzanna Magnuska
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074, Aachen, Germany
| | - Felix Gremse
- Institute for Experimental Molecular Imaging, RWTH Aachen University, Forckenbeckstrasse 55, 52074, Aachen, Germany
| | - Florian Peters
- Department of Oral and Maxillofacial Surgery, University Hospital of Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Gholamreza Danesh
- Department of Orthodontics, University of Witten/Herdecke, Alfred-Herrhausen Str. 45, 58455, Witten, Germany
| | - Frank Hölzle
- Department of Oral and Maxillofacial Surgery, University Hospital of Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Ali Modabber
- Department of Oral and Maxillofacial Surgery, University Hospital of Aachen, Pauwelsstraße 30, 52074, Aachen, Germany
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Dadfar SMR, Pourmahdian S, Tehranchi MM, Dadfar SM. Design and fabrication of novel core-shell nanoparticles for theranostic applications. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04731-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Bohner L, Meier N, Gremse F, Tortamano P, Kleinheinz J, Hanisch M. Magnetic resonance imaging artifacts produced by dental implants with different geometries. Dentomaxillofac Radiol 2020; 49:20200121. [PMID: 32589480 DOI: 10.1259/dmfr.20200121] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVES The purpose of this study was to evaluate the MRI-artifact pattern produced by titanium and zirconia dental implants with different geometries (diameter and height). METHODS Three titanium (Titan SLA, Straumann) and three zirconia (Pure Ceramic Implant, Straumann) dental implants differing on their design (diameter x height) were installed in porcine bone samples. Samples were scanned with a MRI (3T, T1W turbo spin echo sequence, TR/TE 25/3.5ms, voxel size 0.22×0.22×0.50 mm, scan time 11:18). Micro-CT was used as control group (80kV, 125mA, voxel size 16µm). Artifacts' distribution was measured at vestibular and lingual sites, mesial and distal sites, and at the apex. Statistical analysis was performed with Within-ANOVA (p=0.05). RESULTS Artifacts distribution measured 2.57 ± 1.09 mm for titanium artifacts and 0.37 ± 0.20 mm for zirconia artifacts (p<0.05). Neither the measured sites (p=0.73) nor the implant geometries (p=0.43) influenced the appearance of artifacts. CONCLUSION Artifacts were higher for titanium than zirconia implants. The artifacts pattern was similar for different dental implant geometries.
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Affiliation(s)
- Lauren Bohner
- Department of Cranio-Maxillofacial Surgery, Muenster University Hospital, Muenster, Germany.,Department of Prosthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Norbert Meier
- Institute of Clinical Radiology, University Clinics Muenster, Muenster, Germany
| | - Felix Gremse
- Experimental Molecular Imaging, HelmholtInstitute, RWTH Aachen University, Aachen, Germany
| | - Pedro Tortamano
- Department of Prosthodontics, School of Dentistry, University of São Paulo, São Paulo, Brazil
| | - Johannes Kleinheinz
- Department of Cranio-Maxillofacial Surgery, Muenster University Hospital, Muenster, Germany
| | - Marcel Hanisch
- Department of Cranio-Maxillofacial Surgery, Muenster University Hospital, Muenster, Germany
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Effects of Strontium-Doped β-Tricalcium Scaffold on Longitudinal Nuclear Factor-Kappa Beta and Vascular Endothelial Growth Factor Receptor-2 Promoter Activities during Healing in a Murine Critical-Size Bone Defect Model. Int J Mol Sci 2020; 21:ijms21093208. [PMID: 32370039 PMCID: PMC7246816 DOI: 10.3390/ijms21093208] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 04/29/2020] [Accepted: 04/29/2020] [Indexed: 02/06/2023] Open
Abstract
It was hypothesized that strontium (Sr)-doped β-tricalcium phosphate (TCP)-based scaffolds have a positive effect on the regeneration of large bone defects (LBD). Readouts in our mice models were nuclear factor-kappa beta (NF-κB) activity and vascular endothelial growth factor receptor-2 (VEGFR-2) promoter activity during the healing process. A 2-mm critical-size femoral fracture was performed in transgenic NF-κB- and VEGFR-2-luciferase reporter mice. The fracture was filled with a 3D-printed β-TCP scaffold with or without Sr. A bioluminescence in-vivo imaging system was used to sequentially investigate NF-κB and VEGFR-2 expression for two months. After sacrifice, soft and osseous tissue formation in the fracture sites was histologically examined. NF-κB activity increased in the β-TCP + Sr group in the latter stage (day 40–60). VEGFR-2 activity increased in the + Sr group from days 0–15 but decreased and showed significantly less activity than the β-TCP and non-scaffold groups from days 40–60. The new bone formation and soft tissue formation in the + Sr group were significantly higher than in the β-TCP group, whereas the percentage of osseous tissue formation in the β-TCP group was significantly higher than in the β-TCP + Sr group. We analyzed longitudinal VEGFR-2 promoter activity and NF-κB activity profiles, as respective agents of angiogenesis and inflammation, during LBD healing. The extended inflammation phase and eventually more rapid resorption of scaffold caused by the addition of strontium accelerates temporary bridging of the fracture gaps. This finding has the potential to inform an improved treatment strategy for patients who suffer from osteoporosis.
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Drescher HK, Schippers A, Rosenhain S, Gremse F, Bongiovanni L, de Bruin A, Eswaran S, Gallage SU, Pfister D, Szydlowska M, Heikenwalder M, Weiskirchen S, Wagner N, Trautwein C, Weiskirchen R, Kroy DC. L-Selectin/CD62L is a Key Driver of Non-Alcoholic Steatohepatitis in Mice and Men. Cells 2020; 9:cells9051106. [PMID: 32365632 PMCID: PMC7290433 DOI: 10.3390/cells9051106] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 04/20/2020] [Accepted: 04/27/2020] [Indexed: 02/07/2023] Open
Abstract
CD62L (L-Selectin) dependent lymphocyte infiltration is known to induce inflammatory bowel disease (IBD), while its function in the liver, especially in non-alcoholic steatohepatitis (NASH), remains unclear. We here investigated the functional role of CD62L in NASH in humans as well as in two mouse models of steatohepatitis. Hepatic expression of a soluble form of CD62L (sCD62L) was measured in patients with steatosis and NASH. Furthermore, CD62L−/− mice were fed with a methionine and choline deficient (MCD) diet for 4 weeks or with a high fat diet (HFD) for 24 weeks. Patients with NASH displayed increased serum levels of sCD62L. Hepatic CD62L expression was higher in patients with steatosis and increased dramatically in NASH patients. Interestingly, compared to wild type (WT) mice, MCD and HFD-treated CD62L−/− mice were protected from diet-induced steatohepatitis. This was reflected by less fat accumulation in hepatocytes and a dampened manifestation of the metabolic syndrome with an improved insulin resistance and decreased cholesterol and triglyceride levels. Consistent with ameliorated disease, CD62L−/− animals exhibited an enhanced hepatic infiltration of Treg cells and a strong activation of an anti-oxidative stress response. Those changes finally resulted in less fibrosis in CD62L−/− mice. Additionally, this effect could be reproduced in a therapeutic setting by administrating an anti-CD62L blocking antibody. CD62L expression in humans and mice correlates with disease activity of steatohepatitis. CD62L knockout and anti-CD62L-treated mice are protected from diet-induced steatohepatitis suggesting that CD62L is a promising target for therapeutic interventions in NASH.
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Affiliation(s)
- Hannah K. Drescher
- Department of Internal Medicine III, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (C.T.); (D.C.K.)
- Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
- Correspondence:
| | - Angela Schippers
- Department of Pediatrics, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (A.S.); (S.E.); (N.W.)
| | - Stefanie Rosenhain
- Institute for Experimental Molecular Imaging, University Hospital, RWTH Aachen University, 52074 Aachen, Germany; (S.R.); (F.G.)
| | - Felix Gremse
- Institute for Experimental Molecular Imaging, University Hospital, RWTH Aachen University, 52074 Aachen, Germany; (S.R.); (F.G.)
| | - Laura Bongiovanni
- Dutch Molecular Pathology Centre, Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, 3508 Utrecht, The Netherlands; (L.B.); (A.d.B.)
| | - Alain de Bruin
- Dutch Molecular Pathology Centre, Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, 3508 Utrecht, The Netherlands; (L.B.); (A.d.B.)
| | - Sreepradha Eswaran
- Department of Pediatrics, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (A.S.); (S.E.); (N.W.)
| | - Suchira U. Gallage
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), 69120 Heidelberg, Germany; (S.U.G.); (D.P.); (M.S.); (M.H.)
| | - Dominik Pfister
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), 69120 Heidelberg, Germany; (S.U.G.); (D.P.); (M.S.); (M.H.)
| | - Marta Szydlowska
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), 69120 Heidelberg, Germany; (S.U.G.); (D.P.); (M.S.); (M.H.)
| | - Mathias Heikenwalder
- Division of Chronic Inflammation and Cancer, German Cancer Research Center Heidelberg (DKFZ), 69120 Heidelberg, Germany; (S.U.G.); (D.P.); (M.S.); (M.H.)
| | - Sabine Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), University Hospital, RWTH Aachen University, 52074 Aachen, Germany; (S.W.); (R.W.)
| | - Norbert Wagner
- Department of Pediatrics, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (A.S.); (S.E.); (N.W.)
| | - Christian Trautwein
- Department of Internal Medicine III, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (C.T.); (D.C.K.)
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), University Hospital, RWTH Aachen University, 52074 Aachen, Germany; (S.W.); (R.W.)
| | - Daniela C. Kroy
- Department of Internal Medicine III, University Hospital, RWTH Aachen, 52074 Aachen, Germany; (C.T.); (D.C.K.)
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Single Radiotherapy Fraction with Local Anti-CD40 Therapy Generates Effective Abscopal Responses in Mouse Models of Cervical Cancer. Cancers (Basel) 2020; 12:cancers12041026. [PMID: 32331490 PMCID: PMC7226489 DOI: 10.3390/cancers12041026] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/04/2020] [Accepted: 04/20/2020] [Indexed: 11/23/2022] Open
Abstract
Current treatment options for advanced cervical cancer are limited, especially for patients in poor-resource settings, with a 17% 5-year overall survival rate. Here, we report results in animal models of advanced cervical cancer, showing that anti-CD40 therapy can effectively boost the abscopal effect, whereby radiotherapy of a tumor at one site can engender therapeutically significant responses in tumors at distant untreated sites. In this study, two subcutaneous cervical cancer tumors representing one primary and one metastatic tumor were generated in each animal. Only the primary tumor was treated and the responses of both tumors were monitored. The study was repeated as a function of different treatment parameters, including radiotherapy dose and dosing schedule of immunoadjuvant anti-CD40. The results consistently suggest that one fraction dose of radiotherapy with a single dose of agonistic anti-CD40 can generate highly effective abscopal responses, with a significant increase in animal survival (p = 0.0004). Overall, 60% of the mice treated with this combination showed long term survival with complete tumor regression, where tumors of mice in other cohorts continued to grow. Moreover, re-challenged responders to the treatment developed vitiligo, suggesting developed immune memory for this cancer. The findings offer a potential new therapy approach, which could be further investigated and developed for the treatment of advanced cervical cancer, with major potential impact, especially in resource-poor settings.
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Shi C, Kim T, Steiger S, Mulay SR, Klinkhammer BM, Bäuerle T, Melica ME, Romagnani P, Möckel D, Baues M, Yang L, Brouns SLN, Heemskerk JWM, Braun A, Lammers T, Boor P, Anders HJ. Crystal Clots as Therapeutic Target in Cholesterol Crystal Embolism. Circ Res 2020; 126:e37-e52. [PMID: 32089086 DOI: 10.1161/circresaha.119.315625] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
RATIONALE Cholesterol crystal embolism can be a life-threatening complication of advanced atherosclerosis. Pathophysiology and molecular targets for treatment are largely unknown. OBJECTIVE We aimed to develop a new animal model of cholesterol crystal embolism to dissect the molecular mechanisms of cholesterol crystal (CC)-driven arterial occlusion, tissue infarction, and organ failure. METHODS AND RESULTS C57BL/6J mice were injected with CC into the left kidney artery. Primary end point was glomerular filtration rate (GFR). CC caused crystal clots occluding intrarenal arteries and a dose-dependent drop in GFR, followed by GFR recovery within 4 weeks, that is, acute kidney disease. In contrast, the extent of kidney infarction was more variable. Blocking necroptosis using mixed lineage kinase domain-like deficient mice or necrostatin-1s treatment protected from kidney infarction but not from GFR loss because arterial obstructions persisted, identifying crystal clots as a primary target to prevent organ failure. CC involved platelets, neutrophils, fibrin, and extracellular DNA. Neutrophil depletion or inhibition of the release of neutrophil extracellular traps had little effects, but platelet P2Y12 receptor antagonism with clopidogrel, fibrinolysis with urokinase, or DNA digestion with recombinant DNase I all prevented arterial occlusions, GFR loss, and kidney infarction. The window-of-opportunity was <3 hours after CC injection. However, combining Nec-1s (necrostatin-1s) prophylaxis given 1 hour before and DNase I 3 hours after CC injection completely prevented kidney failure and infarcts. In vitro, CC did not directly induce plasmatic coagulation but induced neutrophil extracellular trap formation and DNA release mainly from kidney endothelial cells, neutrophils, and few from platelets. CC induced ATP release from aggregating platelets, which increased fibrin formation in a DNase-dependent manner. CONCLUSIONS CC embolism causes arterial obstructions and organ failure via the formation of crystal clots with fibrin, platelets, and extracellular DNA as critical components. Therefore, our model enables to unravel the pathogenesis of the CC embolism syndrome as a basis for both prophylaxis and targeted therapy.
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Affiliation(s)
- Chongxu Shi
- From the Medizinische Klinik und Poliklinik IV, Klinikum der Universität, LMU München, Germany (C.S., T.K., S.S., S.R.M., L.Y., H.-J.A.)
| | - Tehyung Kim
- From the Medizinische Klinik und Poliklinik IV, Klinikum der Universität, LMU München, Germany (C.S., T.K., S.S., S.R.M., L.Y., H.-J.A.)
| | - Stefanie Steiger
- From the Medizinische Klinik und Poliklinik IV, Klinikum der Universität, LMU München, Germany (C.S., T.K., S.S., S.R.M., L.Y., H.-J.A.)
| | - Shrikant R Mulay
- From the Medizinische Klinik und Poliklinik IV, Klinikum der Universität, LMU München, Germany (C.S., T.K., S.S., S.R.M., L.Y., H.-J.A.)
| | - Barbara M Klinkhammer
- Department of Nephrology, Institute of Pathology (B.M.K, P.B.), RWTH Aachen University Hospital, Germany
| | - Tobias Bäuerle
- Preclinical Imaging Platform Erlangen, Institute of Radiology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany (T.B.)
| | - Maria Elena Melica
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (M.E.M., P.R.), University of Florence, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio" (M.E.M., P.R.), University of Florence, Italy
| | - Paola Romagnani
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (M.E.M., P.R.), University of Florence, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio" (M.E.M., P.R.), University of Florence, Italy.,Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence, Italy (P.R.)
| | - Diana Möckel
- Institute for Experimental Molecular Imaging (D.M., M.B., T.L.), RWTH Aachen University Hospital, Germany
| | - Maike Baues
- Institute for Experimental Molecular Imaging (D.M., M.B., T.L.), RWTH Aachen University Hospital, Germany
| | - Luying Yang
- From the Medizinische Klinik und Poliklinik IV, Klinikum der Universität, LMU München, Germany (C.S., T.K., S.S., S.R.M., L.Y., H.-J.A.)
| | - Sanne L N Brouns
- Department of Biochemistry, CARIM, Maastricht University, The Netherlands (S.L.N.B., J.W.M.H.)
| | - Johan W M Heemskerk
- Department of Biochemistry, CARIM, Maastricht University, The Netherlands (S.L.N.B., J.W.M.H.)
| | - Attila Braun
- Walther-Straub-Institute for Pharmacology and Toxicology, Ludwig-Maximilians University Munich, German Center for Lung Research, Germany (A.B.)
| | - Twan Lammers
- Institute for Experimental Molecular Imaging (D.M., M.B., T.L.), RWTH Aachen University Hospital, Germany
| | - Peter Boor
- Department of Nephrology, Institute of Pathology (B.M.K, P.B.), RWTH Aachen University Hospital, Germany
| | - Hans-Joachim Anders
- From the Medizinische Klinik und Poliklinik IV, Klinikum der Universität, LMU München, Germany (C.S., T.K., S.S., S.R.M., L.Y., H.-J.A.)
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Herrmann M, Babler A, Moshkova I, Gremse F, Kiessling F, Kusebauch U, Nelea V, Kramann R, Moritz RL, McKee MD, Jahnen-Dechent W. Lumenal calcification and microvasculopathy in fetuin-A-deficient mice lead to multiple organ morbidity. PLoS One 2020; 15:e0228503. [PMID: 32074120 PMCID: PMC7029858 DOI: 10.1371/journal.pone.0228503] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/16/2020] [Indexed: 12/22/2022] Open
Abstract
The plasma protein fetuin-A mediates the formation of protein-mineral colloids known as calciprotein particles (CPP)-rapid clearance of these CPP by the reticuloendothelial system prevents errant mineral precipitation and therefore pathological mineralization (calcification). The mutant mouse strain D2,Ahsg-/- combines fetuin-A deficiency with the calcification-prone DBA/2 genetic background, having a particularly severe compound phenotype of microvascular and soft tissue calcification. Here we studied mechanisms leading to soft tissue calcification, organ damage and death in these mice. We analyzed mice longitudinally by echocardiography, X-ray-computed tomography, analytical electron microscopy, histology, mass spectrometry proteomics, and genome-wide microarray-based expression analyses of D2 wildtype and Ahsg-/- mice. Fetuin-A-deficient mice had calcified lesions in myocardium, lung, brown adipose tissue, reproductive organs, spleen, pancreas, kidney and the skin, associated with reduced growth, cardiac output and premature death. Importantly, early-stage calcified lesions presented in the lumen of the microvasculature suggesting precipitation of mineral containing complexes from the fluid phase of blood. Genome-wide expression analysis of calcified lesions and surrounding (not calcified) tissue, together with morphological observations, indicated that the calcification was not associated with osteochondrogenic cell differentiation, but rather with thrombosis and fibrosis. Collectively, these results demonstrate that soft tissue calcification can start by intravascular mineral deposition causing microvasculopathy, which impacts on growth, organ function and survival. Our study underscores the importance of fetuin-A and related systemic regulators of calcified matrix metabolism to prevent cardiovascular disease, especially in dysregulated mineral homeostasis.
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Affiliation(s)
- Marietta Herrmann
- Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany
| | - Anne Babler
- Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany
| | - Irina Moshkova
- Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany
| | - Felix Gremse
- Helmholtz Institute for Biomedical Engineering, Experimental Molecular Imaging, RWTH Aachen University Hospital, Aachen, Germany
| | - Fabian Kiessling
- Helmholtz Institute for Biomedical Engineering, Experimental Molecular Imaging, RWTH Aachen University Hospital, Aachen, Germany
| | - Ulrike Kusebauch
- Institute for Systems Biology, Seattle, Washington, United States of America
| | - Valentin Nelea
- Faculty of Dentistry, Faculty of Medicine (Dept. of Anatomy and Cell Biology), McGill University, Montreal, Quebec, Canada
| | - Rafael Kramann
- Division of Nephrology, RWTH Aachen University Hospital, Aachen, Germany
| | - Robert L. Moritz
- Institute for Systems Biology, Seattle, Washington, United States of America
| | - Marc D. McKee
- Faculty of Dentistry, Faculty of Medicine (Dept. of Anatomy and Cell Biology), McGill University, Montreal, Quebec, Canada
| | - Willi Jahnen-Dechent
- Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany
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Babler A, Schmitz C, Buescher A, Herrmann M, Gremse F, Gorgels T, Floege J, Jahnen-Dechent W. Microvasculopathy and soft tissue calcification in mice are governed by fetuin-A, magnesium and pyrophosphate. PLoS One 2020; 15:e0228938. [PMID: 32074140 PMCID: PMC7029863 DOI: 10.1371/journal.pone.0228938] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 01/27/2020] [Indexed: 12/18/2022] Open
Abstract
Calcifications can disrupt organ function in the cardiovascular system and the kidney, and are particularly common in patients with chronic kidney disease (CKD). Fetuin-A deficient mice maintained against the genetic background DBA/2 exhibit particularly severe soft tissue calcifications, while fetuin-A deficient C57BL/6 mice remain healthy. We employed molecular genetic analysis to identify risk factors of calcification in fetuin-A deficient mice. We sought to identify pharmaceutical therapeutic targets that could be influenced by dietary of parenteral supplementation. We studied the progeny of an intercross of fetuin-A deficient DBA/2 and C57BL/6 mice to identify candidate risk genes involved in calcification. We determined that a hypomorphic mutation of the Abcc6 gene, a liver ATP transporter supplying systemic pyrophosphate, and failure to regulate the Trpm6 magnesium transporter in kidney were associated with severity of calcification. Calcification prone fetuin-A deficient mice were alternatively treated with parenteral administration of fetuin-A dietary magnesium supplementation, phosphate restriction, or by or parenteral pyrophosphate. All treatments markedly reduced soft tissue calcification, demonstrated by computed tomography, histology and tissue calcium measurement. We show that pathological ectopic calcification in fetuin-A deficient DBA/2 mice is caused by a compound deficiency of three major extracellular and systemic inhibitors of calcification, namely fetuin-A, magnesium, and pyrophosphate. All three of these are individually known to contribute to stabilize protein-mineral complexes and thus inhibit mineral precipitation from extracellular fluid. We show for the first time a compound triple deficiency that can be treated by simple dietary or parenteral supplementation. This is of special importance in patients with advanced CKD, who commonly exhibit reduced serum fetuin-A, magnesium and pyrophosphate levels.
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Affiliation(s)
- Anne Babler
- Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany
| | - Carlo Schmitz
- Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany
| | - Andrea Buescher
- Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany
| | - Marietta Herrmann
- Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany
- IZKF Research Group Tissue Regeneration in Musculoskeletal Regeneration, Orthopedic Center for Musculoskeletal Research, University of Würzburg, Würzburg, Germany
| | - Felix Gremse
- Helmholtz Institute for Biomedical Engineering, Experimental Molecular Imaging, RWTH Aachen University Hospital, Aachen, Germany
| | - Theo Gorgels
- University Eye Clinic Maastricht, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Juergen Floege
- Division of Nephrology and Clinical Immunology, RWTH Aachen University Hospital, Aachen, Germany
| | - Willi Jahnen-Dechent
- Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany
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Dadfar SM, Camozzi D, Darguzyte M, Roemhild K, Varvarà P, Metselaar J, Banala S, Straub M, Güvener N, Engelmann U, Slabu I, Buhl M, van Leusen J, Kögerler P, Hermanns-Sachweh B, Schulz V, Kiessling F, Lammers T. Size-isolation of superparamagnetic iron oxide nanoparticles improves MRI, MPI and hyperthermia performance. J Nanobiotechnology 2020; 18:22. [PMID: 31992302 PMCID: PMC6986086 DOI: 10.1186/s12951-020-0580-1] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 01/11/2020] [Indexed: 11/10/2022] Open
Abstract
Superparamagnetic iron oxide nanoparticles (SPION) are extensively used for magnetic resonance imaging (MRI) and magnetic particle imaging (MPI), as well as for magnetic fluid hyperthermia (MFH). We here describe a sequential centrifugation protocol to obtain SPION with well-defined sizes from a polydisperse SPION starting formulation, synthesized using the routinely employed co-precipitation technique. Transmission electron microscopy, dynamic light scattering and nanoparticle tracking analyses show that the SPION fractions obtained upon size-isolation are well-defined and almost monodisperse. MRI, MPI and MFH analyses demonstrate improved imaging and hyperthermia performance for size-isolated SPION as compared to the polydisperse starting mixture, as well as to commercial and clinically used iron oxide nanoparticle formulations, such as Resovist® and Sinerem®. The size-isolation protocol presented here may help to identify SPION with optimal properties for diagnostic, therapeutic and theranostic applications.
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Affiliation(s)
- Seyed Mohammadali Dadfar
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany
| | - Denise Camozzi
- Department of Biomolecular Sciences, University of Urbino 'Carlo Bo', Via Aurelio Saffi 2, 61029, Urbino, Italy
| | - Milita Darguzyte
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany
| | - Karolin Roemhild
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany
| | - Paola Varvarà
- Department of Scienze E Tecnologie Biologiche, Chimiche E Farmaceutiche (STEBICEF), University of Palermo, Palermo, Italy
| | - Josbert Metselaar
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany
| | - Srinivas Banala
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany
| | - Marcel Straub
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany
| | - Nihan Güvener
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany
| | - Ulrich Engelmann
- Institute of Applied Medical Engineering, Helmholtz Institute, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 20, 52074, Aachen, Germany
| | - Ioana Slabu
- Institute of Applied Medical Engineering, Helmholtz Institute, Faculty of Medicine, RWTH Aachen University, Pauwelsstrasse 20, 52074, Aachen, Germany
| | - Miriam Buhl
- Electron Microscopy, Institute of Pathology, Faculty of Medicine, RWTH Aachen University, Pauwelstrasse 30, 52074, Aachen, Germany
| | - Jan van Leusen
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
| | - Paul Kögerler
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
| | - Benita Hermanns-Sachweh
- Electron Microscopy, Institute of Pathology, Faculty of Medicine, RWTH Aachen University, Pauwelstrasse 30, 52074, Aachen, Germany
| | - Volkmar Schulz
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany
| | - Twan Lammers
- Institute for Experimental Molecular Imaging, Faculty of Medicine, RWTH Aachen University, Forckenbeckstr. 55, 52074, Aachen, Germany. .,Department of Pharmaceutics, Utrecht University, Utrecht, The Netherlands. .,Department of Targeted Therapeutics, University of Twente, Enschede, The Netherlands.
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50
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May JN, Golombek SK, Baues M, Dasgupta A, Drude N, Rix A, Rommel D, von Stillfried S, Appold L, Pola R, Pechar M, van Bloois L, Storm G, Kuehne AJC, Gremse F, Theek B, Kiessling F, Lammers T. Multimodal and multiscale optical imaging of nanomedicine delivery across the blood-brain barrier upon sonopermeation. Am J Cancer Res 2020; 10:1948-1959. [PMID: 32042346 PMCID: PMC6993230 DOI: 10.7150/thno.41161] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 11/20/2019] [Indexed: 01/15/2023] Open
Abstract
Rationale: The blood-brain barrier (BBB) is a major obstacle for drug delivery to the brain. Sonopermeation, which relies on the combination of ultrasound and microbubbles, has emerged as a powerful tool to permeate the BBB, enabling the extravasation of drugs and drug delivery systems (DDS) to and into the central nervous system (CNS). When aiming to improve the treatment of high medical need brain disorders, it is important to systematically study nanomedicine translocation across the sonopermeated BBB. To this end, we here employed multimodal and multiscale optical imaging to investigate the impact of DDS size on brain accumulation, extravasation and penetration upon sonopermeation. Methods: Two prototypic DDS, i.e. 10 nm-sized pHPMA polymers and 100 nm-sized PEGylated liposomes, were labeled with fluorophores and intravenously injected in healthy CD-1 nude mice. Upon sonopermeation, computed tomography-fluorescence molecular tomography, fluorescence reflectance imaging, fluorescence microscopy, confocal microscopy and stimulated emission depletion nanoscopy were used to study the effect of DDS size on their translocation across the BBB. Results: Sonopermeation treatment enabled safe and efficient opening of the BBB, which was confirmed by staining extravasated endogenous IgG. No micro-hemorrhages, edema and necrosis were detected in H&E stainings. Multimodal and multiscale optical imaging showed that sonopermeation promoted the accumulation of nanocarriers in mouse brains, and that 10 nm-sized polymeric DDS accumulated more strongly and penetrated deeper into the brain than 100 nm-sized liposomes. Conclusions: BBB opening via sonopermeation enables safe and efficient delivery of nanomedicine formulations to and into the brain. When looking at accumulation and penetration (and when neglecting issues such as drug loading capacity and therapeutic efficacy) smaller-sized DDS are found to be more suitable for drug delivery across the BBB than larger-sized DDS. These findings are valuable for better understanding and further developing nanomedicine-based strategies for the treatment of CNS disorders.
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