1
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Koch J, Schober SJ, Hindupur SV, Schöning C, Klein FG, Mantwill K, Ehrenfeld M, Schillinger U, Hohnecker T, Qi P, Steiger K, Aichler M, Gschwend JE, Nawroth R, Holm PS. Targeting the Retinoblastoma/E2F repressive complex by CDK4/6 inhibitors amplifies oncolytic potency of an oncolytic adenovirus. Nat Commun 2022; 13:4689. [PMID: 35948546 PMCID: PMC9365808 DOI: 10.1038/s41467-022-32087-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/13/2022] [Indexed: 11/09/2022] Open
Abstract
CDK4/6 inhibitors (CDK4/6i) and oncolytic viruses are promising therapeutic agents for the treatment of various cancers. As single agents, CDK4/6 inhibitors that are approved for the treatment of breast cancer in combination with endocrine therapy cause G1 cell cycle arrest, whereas adenoviruses induce progression into S-phase in infected cells as an integral part of the their life cycle. Both CDK4/6 inhibitors and adenovirus replication target the Retinoblastoma protein albeit for different purposes. Here we show that in combination CDK4/6 inhibitors potentiate the anti-tumor effect of the oncolytic adenovirus XVir-N-31 in bladder cancer and murine Ewing sarcoma xenograft models. This increase in oncolytic potency correlates with an increase in virus-producing cancer cells, enhanced viral genome replication, particle formation and consequently cancer cell killing. The molecular mechanism that regulates this response is fundamentally based on the reduction of Retinoblastoma protein expression levels by CDK4/6 inhibitors. Neither CDK4/6 inhibitors nor oncolytic adenoviruses show high efficiency as monotherapy in the treatment of cancer. Authors show here that when combined, CDK4/6 inhibitors deplete Retinoblastoma protein levels, which leads to more efficient virus replication and an increase in oncolytic virus-producing cancer cells and thus to efficient anti-tumor response in mouse xenograft sarcoma models.
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Affiliation(s)
- Jana Koch
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Dr. Margarete Fischer-Bosch Institute for Clinical Pharmacology, Stuttgart, University of Tübingen, Tübingen, Germany
| | - Sebastian J Schober
- Department of Pediatrics, Children's Cancer Research Center, Kinderklinik München Schwabing, School of Medicine, Technical University of Munich, 80804, Munich, Germany
| | - Sruthi V Hindupur
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Caroline Schöning
- Department of Pediatrics, Children's Cancer Research Center, Kinderklinik München Schwabing, School of Medicine, Technical University of Munich, 80804, Munich, Germany
| | - Florian G Klein
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Klaus Mantwill
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Maximilian Ehrenfeld
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Ulrike Schillinger
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Timmy Hohnecker
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Pan Qi
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,Department of Urology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Katja Steiger
- Department of Pathology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Michaela Aichler
- Helmholtz Zentrum München, German Research Center for Environmental Health, Research Unit Analytical Pathology, Munich, Germany
| | - Jürgen E Gschwend
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Roman Nawroth
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
| | - Per Sonne Holm
- Department of Urology, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany. .,Department of Oral and Maxillofacial Surgery, Medical University Innsbruck, A-6020, Innsbruck, Austria.
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2
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Zhao L, Chen F, Quitt O, Festag M, Ringelhan M, Wisskirchen K, Festag J, Yakovleva L, Sureau C, Bohne F, Aichler M, Bruss V, Shevtsov M, van de Klundert M, Momburg F, Möhl BS, Protzer U. Hepatitis B virus envelope proteins can serve as therapeutic targets embedded in the host cell plasma membrane. Cell Microbiol 2021; 23:e13399. [PMID: 34729894 DOI: 10.1111/cmi.13399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 12/29/2022]
Abstract
Hepatitis B virus (HBV) infection is a major health threat causing 880,000 deaths each year. Available therapies control viral replication but do not cure HBV, leaving patients at risk to develop hepatocellular carcinoma. Here, we show that HBV envelope proteins (HBs)-besides their integration into endosomal membranes-become embedded in the plasma membrane where they can be targeted by redirected T-cells. HBs was detected on the surface of HBV-infected cells, in livers of mice replicating HBV and in HBV-induced hepatocellular carcinoma. Staining with HBs-specific recombinant antibody MoMab recognising a conformational epitope indicated that membrane-associated HBs remains correctly folded in HBV-replicating cells in cell culture and in livers of HBV-transgenic mice in vivo. MoMab coated onto superparamagnetic iron oxide nanoparticles allowed to detect membrane-associated HBs after HBV infection by electron microscopy in distinct stretches of the hepatocyte plasma membrane. Last but not least, we demonstrate that HBs located on the cell surface allow therapeutic targeting of HBV-positive cells by T-cells either engrafted with a chimeric antigen receptor or redirected by bispecific, T-cell engager antibodies. TAKE AWAYS: HBs become translocated to the plasma membrane. Novel, recombinant antibody confirmed proper conformation of HBs on the membrane. HBs provide an interesting target by T-cell-based, potentially curative therapies.
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Affiliation(s)
- Lili Zhao
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany
| | - Fuwang Chen
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany
| | - Oliver Quitt
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany
| | - Marvin Festag
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany
| | - Marc Ringelhan
- Department of Internal Medicine II, University Hospital rechts der Isar, Technical University of Munich, Munich, Germany
| | - Karin Wisskirchen
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany
| | - Julia Festag
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany
| | - Luidmila Yakovleva
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), St. Petersburg, Russia
| | - Camille Sureau
- Molecular Virology laboratory, Institut National de la Transfusion Sanguine, Paris, France
| | - Felix Bohne
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Munich, Germany
| | - Volker Bruss
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany
| | - Maxim Shevtsov
- Laboratory of Biomedical Nanotechnologies, Institute of Cytology of the Russian Academy of Sciences (RAS), St. Petersburg, Russia.,Center for Translational Cancer Research, University Hospital rechts der Isar, Technical University of Munich, Munich, Germany
| | - Maarten van de Klundert
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany
| | - Frank Momburg
- Clinical Cooperation Unit Applied Tumor Immunity, German Cancer Research Center, Heidelberg, Germany
| | - Britta S Möhl
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany.,German Center for Infection Research (DZIF), Munich Partner Site, Munich, Germany
| | - Ulrike Protzer
- Institute of Virology, Technical University of Munich/Helmholtz Zentrum München, TUM School of Medicine, Munich, Germany.,German Center for Infection Research (DZIF), Munich Partner Site, Munich, Germany
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3
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Kunzke T, Prade VM, Buck A, Sun N, Feuchtinger A, Matzka M, Fernandez IE, Wuyts W, Ackermann M, Jonigk D, Aichler M, Schmid RA, Eickelberg O, Berezowska S, Walch A. Patterns of carbon-bound exogenous compounds in lung cancer patients and association with disease pathophysiology. Cancer Res 2021; 81:5862-5875. [PMID: 34666994 DOI: 10.1158/0008-5472.can-21-1175] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 07/30/2021] [Accepted: 10/14/2021] [Indexed: 11/16/2022]
Abstract
Asymptomatic anthracosis is the accumulation of black carbon particles in adult human lungs. It is a common occurrence, but the pathophysiological significance of anthracosis is debatable. Using in situ high mass resolution matrix-assisted laser desorption/ionization (MALDI) fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometry imaging analysis, we discovered noxious carbon-bound exogenous compounds, such as polycyclic aromatic hydrocarbons (PAHs), tobacco-specific nitrosamines, or aromatic amines, in a series of 330 lung cancer patients in highly variable and unique patterns. The characteristic nature of carbon-bound exogenous compound had a strong association with patient outcome, tumor progression, the tumor immune microenvironment, PD-L1 expression, and DNA damage. Spatial correlation network analyses revealed substantial differences in the metabolome of tumor cells compared to tumor stroma depending on carbon-bound exogenous compounds. Overall, the bioactive pool of exogenous compounds is associated with several changes in lung cancer pathophysiology and correlates with patient outcome. Given the high prevalence of anthracosis in the lungs of adult humans, future work should investigate the role of carbon-bound exogenous compounds in lung carcinogenesis and lung cancer therapy.
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Affiliation(s)
- Thomas Kunzke
- Research Unit Analytical Pathology, Helmholtz Center Munich - German Research Center for Environmental Health
| | - Verena M Prade
- Research Unit Analytical Pathology, Helmholtz Center Munich - German Research Center for Environmental Health
| | - Achim Buck
- Research Unit Analytical Pathology, Helmholtz Center Munich - German Research Center for Environmental Health
| | - Na Sun
- Research Unit Analytical Pathology, Helmholtz Center Munich - German Research Center for Environmental Health
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Center Munich - German Research Center for Environmental Health
| | - Marco Matzka
- Research Unit Analytical Pathology, Helmholtz Center Munich - German Research Center for Environmental Health
| | | | | | | | | | | | | | | | - Sabina Berezowska
- Deparment of Laboratory Medicine and Pathology, Institute of Pathology, Lausanne University Hospital and University of Lausanne
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Center Munich - German Research Center for Environmental Health
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4
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Liu N, Gujrati V, Malekzadeh-Najafabadi J, Werner JPF, Klemm U, Tang L, Chen Z, Prakash J, Huang Y, Stiel A, Mettenleiter G, Aichler M, Blutke A, Walch A, Kleigrewe K, Razansky D, Sattler M, Ntziachristos V. Croconaine-based nanoparticles enable efficient optoacoustic imaging of murine brain tumors. Photoacoustics 2021; 22:100263. [PMID: 33948433 PMCID: PMC8080078 DOI: 10.1016/j.pacs.2021.100263] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 02/24/2021] [Accepted: 03/11/2021] [Indexed: 05/17/2023]
Abstract
Contrast enhancement in optoacoustic (photoacoustic) imaging can be achieved with agents that exhibit high absorption cross-sections, high photostability, low quantum yield, low toxicity, and preferential bio-distribution and clearance profiles. Based on advantageous photophysical properties of croconaine dyes, we explored croconaine-based nanoparticles (CR780RGD-NPs) as highly efficient contrast agents for targeted optoacoustic imaging of challenging preclinical tumor targets. Initial characterization of the CR780 dye was followed by modifications using polyethylene glycol and the cancer-targeting c(RGDyC) peptide, resulting in self-assembled ultrasmall particles with long circulation time and active tumor targeting. Preferential bio-distribution was demonstrated in orthotopic mouse brain tumor models by multispectral optoacoustic tomography (MSOT) imaging and histological analysis. Our findings showcase particle accumulation in brain tumors with sustainable strong optoacoustic signals and minimal toxic side effects. This work points to CR780RGD-NPs as a promising optoacoustic contrast agent for potential use in the diagnosis and image-guided resection of brain tumors.
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Affiliation(s)
- Nian Liu
- Chair of Biological Imaging, Center for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich 81675, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
| | - Vipul Gujrati
- Chair of Biological Imaging, Center for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich 81675, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
- Corresponding authors at: Chair of Biological Imaging, Center for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich 81675, Germany.
| | - Jaber Malekzadeh-Najafabadi
- Chair of Biological Imaging, Center for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich 81675, Germany
| | | | - Uwe Klemm
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
| | - Longguang Tang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361005, China
| | - Zhenyue Chen
- Institute for Biomedical Engineering and Institute of Pharmacology and Toxicology, University of Zurich and ETH Zurich, Zurich 8093, Switzerland
| | - Jaya Prakash
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
- Department of Instrumentation and Applied Physics, Indian Institute of Science, C. V. Raman Road, Bengaluru 560012, India
| | - Yuanhui Huang
- Chair of Biological Imaging, Center for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich 81675, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
| | - Andre Stiel
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
| | - Gabriele Mettenleiter
- Research Unit Analytical Pathology, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
| | - Andreas Blutke
- Research Unit Analytical Pathology, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
| | - Karin Kleigrewe
- Bavarian Center for Biomolecular Mass Spectrometry (BayBioMS), Technical University of Munich, Freising 85354, Germany
| | - Daniel Razansky
- Institute for Biomedical Engineering and Institute of Pharmacology and Toxicology, University of Zurich and ETH Zurich, Zurich 8093, Switzerland
| | - Michael Sattler
- Bavarian NMR Center and Center for Integrated Protein Science Munich, Department of Chemistry, Technical University of Munich, Garching 85747, Germany
- Institute of Structural Biology, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
| | - Vasilis Ntziachristos
- Chair of Biological Imaging, Center for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich 81675, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München (GmbH), Neuherberg 85764, Germany
- Corresponding authors at: Chair of Biological Imaging, Center for Translational Cancer Research (TranslaTUM), School of Medicine, Technical University of Munich, Munich 81675, Germany.
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5
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Blutke A, Sun N, Xu Z, Buck A, Harrison L, Schriever SC, Pfluger PT, Wiles D, Kunzke T, Huber K, Schlegel J, Aichler M, Feuchtinger A, Matiasek K, Hauck SM, Walch A. Light sheet fluorescence microscopy guided MALDI-imaging mass spectrometry of cleared tissue samples. Sci Rep 2020; 10:14461. [PMID: 32879402 PMCID: PMC7468256 DOI: 10.1038/s41598-020-71465-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 08/10/2020] [Indexed: 02/08/2023] Open
Abstract
Light sheet fluorescence microscopy (LSFM) of optically cleared biological samples represents a powerful tool to analyze the 3-dimensional morphology of tissues and organs. Multimodal combinations of LSFM with additional analyses of the identical sample help to limit the consumption of restricted specimen and reduce inter-sample variation. Here, we demonstrate the proof-of-concept that LSFM of cleared brain tissue samples can be combined with Matrix Assisted Laser Desorption/Ionization-Mass Spectrometry Imaging (MALDI-MSI) for detection and quantification of proteins. Samples of freshly dissected murine brain and of archived formalin-fixed paraffin-embedded (FFPE) human brain tissue were cleared (3DISCO). Tissue regions of interest were defined by LSFM and excised, (re)-embedded in paraffin, and sectioned. Mouse sections were coated with sinapinic acid matrix. Human brain sections were pre-digested with trypsin and coated with α-cyano-4-hydroxycinnamic acid matrix. Subsequently, sections were subjected to MALDI-time-of-flight (TOF)-MSI in mass ranges between 0.8 to 4 kDa (human tissue sections), or 2.5–25 kDa (mouse tissue sections) with a lateral resolution of 50 µm. Protein- and peptide-identities corresponding to acquired MALDI-MSI spectra were confirmed by parallel liquid chromatography tandem mass spectrometry (LC–MS/MS) analysis. The spatial abundance- and intensity-patterns of established marker proteins detected by MALDI-MSI were also confirmed by immunohistochemistry.
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Affiliation(s)
- Andreas Blutke
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 8576, Neuherberg, Germany
| | - Na Sun
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 8576, Neuherberg, Germany
| | - Zhihao Xu
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 8576, Neuherberg, Germany
| | - Achim Buck
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 8576, Neuherberg, Germany
| | - Luke Harrison
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München, 85764, Neuherberg, Germany.,Institute for Diabetes and Obesity, Helmholtz Zentrum München, 85764, Neuherberg, Germany.,German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany.,Division of Metabolic Diseases, Technische Universität München, 80333, Munich, Germany
| | - Sonja C Schriever
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München, 85764, Neuherberg, Germany.,Institute for Diabetes and Obesity, Helmholtz Zentrum München, 85764, Neuherberg, Germany.,German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany
| | - Paul T Pfluger
- Research Unit Neurobiology of Diabetes, Helmholtz Zentrum München, 85764, Neuherberg, Germany.,Institute for Diabetes and Obesity, Helmholtz Zentrum München, 85764, Neuherberg, Germany.,German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany
| | | | - Thomas Kunzke
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 8576, Neuherberg, Germany
| | - Katharina Huber
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 8576, Neuherberg, Germany
| | - Jürgen Schlegel
- Institute for Pathology, Department of Neuropathology, Technische Universität München, 80333, Munich, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 8576, Neuherberg, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 8576, Neuherberg, Germany.
| | - Kaspar Matiasek
- Institute for Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, 80539, Munich, Germany
| | - Stefanie M Hauck
- Research Unit for Protein Science, Helmholtz Zentrum München, 85764, Neuherberg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 8576, Neuherberg, Germany
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6
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Fischer A, Koopmans T, Ramesh P, Christ S, Strunz M, Wannemacher J, Aichler M, Feuchtinger A, Walch A, Ansari M, Theis FJ, Schorpp K, Hadian K, Neumann PA, Schiller HB, Rinkevich Y. Post-surgical adhesions are triggered by calcium-dependent membrane bridges between mesothelial surfaces. Nat Commun 2020; 11:3068. [PMID: 32555155 PMCID: PMC7299976 DOI: 10.1038/s41467-020-16893-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 05/18/2020] [Indexed: 01/14/2023] Open
Abstract
Surgical adhesions are bands of scar tissues that abnormally conjoin organ surfaces. Adhesions are a major cause of post-operative and dialysis-related complications, yet their patho-mechanism remains elusive, and prevention agents in clinical trials have thus far failed to achieve efficacy. Here, we uncover the adhesion initiation mechanism by coating beads with human mesothelial cells that normally line organ surfaces, and viewing them under adhesion stimuli. We document expansive membrane protrusions from mesothelia that tether beads with massive accompanying adherence forces. Membrane protrusions precede matrix deposition, and can transmit adhesion stimuli to healthy surfaces. We identify cytoskeletal effectors and calcium signaling as molecular triggers that initiate surgical adhesions. A single, localized dose targeting these early germinal events completely prevented adhesions in a preclinical mouse model, and in human assays. Our findings classifies the adhesion pathology as originating from mesothelial membrane bridges and offer a radically new therapeutic approach to treat adhesions. Surgical adhesions are organ-joining bands of scar tissue that remain clinically untreatable. Here, the authors show that adhesions are formed through expansive mesothelial membrane bridges, and that blocking these with small molecules prevents formation of adhesions in mice.
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Affiliation(s)
- Adrian Fischer
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Regenerative Biology and Medicine, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Tim Koopmans
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Regenerative Biology and Medicine, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Pushkar Ramesh
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Regenerative Biology and Medicine, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Simon Christ
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Regenerative Biology and Medicine, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Maximilian Strunz
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Systems Medicine of Chronic Lung Disease, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Juliane Wannemacher
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Regenerative Biology and Medicine, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Michaela Aichler
- Research Unit of Analytical Pathology, German Research Center for Environmental Health, Helmholtz Zentrum München, Munich, Germany
| | - Annette Feuchtinger
- Research Unit of Analytical Pathology, German Research Center for Environmental Health, Helmholtz Zentrum München, Munich, Germany
| | - Axel Walch
- Research Unit of Analytical Pathology, German Research Center for Environmental Health, Helmholtz Zentrum München, Munich, Germany
| | - Meshal Ansari
- Helmholtz Zentrum München, Institute of Computational Biology, Munich, Germany
| | - Fabian J Theis
- Helmholtz Zentrum München, Institute of Computational Biology, Munich, Germany
| | - Kenji Schorpp
- Helmholtz Zentrum München, Assay Development and Screening Platform, Institute for Molecular Toxicology and Pharmacology, Munich, Germany
| | - Kamyar Hadian
- Helmholtz Zentrum München, Assay Development and Screening Platform, Institute for Molecular Toxicology and Pharmacology, Munich, Germany
| | - Philipp-Alexander Neumann
- Technical University of Munich, School of Medicine, Klinikum rechts der Isar, Department of Surgery, Munich, Germany
| | - Herbert B Schiller
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Systems Medicine of Chronic Lung Disease, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Yuval Rinkevich
- Helmholtz Zentrum München, Institute of Lung Biology and Disease, Regenerative Biology and Medicine, Member of the German Center for Lung Research (DZL), Munich, Germany.
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7
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Martin-Medina A, Lehmann M, Burgy O, Hermann S, Baarsma HA, Wagner DE, De Santis MM, Ciolek F, Hofer TP, Frankenberger M, Aichler M, Lindner M, Gesierich W, Guenther A, Walch A, Coughlan C, Wolters P, Lee JS, Behr J, Königshoff M. Increased Extracellular Vesicles Mediate WNT5A Signaling in Idiopathic Pulmonary Fibrosis. Am J Respir Crit Care Med 2020; 198:1527-1538. [PMID: 30044642 DOI: 10.1164/rccm.201708-1580oc] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Rationale: Idiopathic pulmonary fibrosis (IPF) is a lethal lung disease characterized by lung epithelial cell injury, increased (myo)fibroblast activation, and extracellular matrix deposition. Extracellular vesicles (EVs) regulate intercellular communication by carrying a variety of signaling mediators, including WNT (wingless/integrated) proteins. The relevance of EVs in pulmonary fibrosis and their potential contribution to disease pathogenesis, however, remain unexplored.Objectives: To characterize EVs and study the role of EV-bound WNT signaling in IPF.Methods: We isolated EVs from BAL fluid (BALF) from experimental lung fibrosis as well as samples from IPF, non-IPF interstitial lung disease (ILD), non-ILD, and healthy volunteers from two independent cohorts. EVs were characterized by transmission electron microscopy, nanoparticle tracking analysis, and Western blotting. Primary human lung fibroblasts (phLFs) were used for EV isolation and analyzed by metabolic activity assays, cell counting, quantitative PCR, and Western blotting upon WNT gain- and loss-of-function studies.Measurements and Main Results: We found increased EVs, particularly exosomes, in BALF from experimental lung fibrosis as well as from patients with IPF. WNT5A was secreted on EVs in lung fibrosis and induced by transforming growth factor-β in primary human lung fibroblasts. The phLF-derived EVs induced phLF proliferation, which was attenuated by WNT5A silencing and antibody-mediated inhibition and required intact EV structure. Similarly, EVs from IPF BALF induced phLF proliferation, which was mediated by WNT5A.Conclusions: Increased EVs function as carriers for signaling mediators, such as WNT5A, in IPF and thus contribute to disease pathogenesis. Characterization of EV secretion and composition may lead to novel approaches to diagnose and develop treatments for pulmonary fibrosis.
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Affiliation(s)
- Aina Martin-Medina
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Mareike Lehmann
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Olivier Burgy
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, and
| | - Sarah Hermann
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Hoeke A Baarsma
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Darcy E Wagner
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Martina M De Santis
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Florian Ciolek
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Thomas P Hofer
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany.,Center for Thoracic Surgery, Asklepios Biobank for Lung Diseases, Asklepios Clinic Munich-Gauting, Munich, Germany
| | - Marion Frankenberger
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany
| | - Michaela Aichler
- Institute of Pathology, Research Unit Analytical Pathology, Helmholtz Center Munich, Munich, Germany
| | - Michael Lindner
- Center for Thoracic Surgery, Asklepios Biobank for Lung Diseases, Asklepios Clinic Munich-Gauting, Munich, Germany
| | - Wolfgang Gesierich
- Center for Thoracic Surgery, Asklepios Biobank for Lung Diseases, Asklepios Clinic Munich-Gauting, Munich, Germany
| | - Andreas Guenther
- Department of Internal Medicine, Universities of Giessen and Marburg Lung Center, Justus Liebig University of Giessen, member of the German Center for Lung Research, Giessen, Germany.,Agaplesion Lung Clinic Waldhof Elgershausen, Greifenstein, Germany.,European IPF Network and European IPF Registry, Giessen, Germany; and
| | - Axel Walch
- Institute of Pathology, Research Unit Analytical Pathology, Helmholtz Center Munich, Munich, Germany
| | - Christina Coughlan
- Department of Neurology, University of Colorado Denver, Aurora, Colorado
| | - Paul Wolters
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of California San Francisco, San Francisco, California
| | - Joyce S Lee
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, and
| | - Jürgen Behr
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany.,Center for Thoracic Surgery, Asklepios Biobank for Lung Diseases, Asklepios Clinic Munich-Gauting, Munich, Germany
| | - Melanie Königshoff
- Comprehensive Pneumology Center, Ludwig Maximilian University, University Hospital Grosshadern, and Helmholtz Center Munich, member of the German Center of Lung Research, Munich, Germany.,Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, and
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8
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Niu Z, Sarkar R, Aichler M, Wester HJ, Yousefi BH, Reif B. Mapping the Binding Interface of PET Tracer Molecules and Alzheimer Disease Aβ Fibrils by Using MAS Solid-State NMR Spectroscopy. Chembiochem 2020; 21:2495-2502. [PMID: 32291951 PMCID: PMC7496087 DOI: 10.1002/cbic.202000143] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/10/2020] [Indexed: 12/13/2022]
Abstract
Positron emission tomography (PET) tracer molecules like thioflavin T specifically recognize amyloid deposition in brain tissue by selective binding to hydrophobic or aromatic surface grooves on the β‐sheet surface along the fibril axis. The molecular basis of this interaction is, however, not well understood. We have employed magic angle spinning (MAS) solid‐state NMR spectroscopy to characterize Aβ‐PET tracer complexes at atomic resolution. We established a titration protocol by using bovine serum albumin as a carrier to transfer hydrophobic small molecules to Aβ(1‐40) fibrillar aggregates. The same Aβ(1‐40) amyloid fibril sample was employed in subsequent titrations to minimize systematic errors that potentially arise from sample preparation. In the experiments, the small molecules 13C‐methylated Pittsburgh compound B (PiB) as well as a novel Aβ tracer based on a diarylbithiazole (DABTA) scaffold were employed. Classical 13C‐detected as well as proton‐detected spectra of protonated and perdeuterated samples with back‐substituted protons, respectively, were acquired and analyzed. After titration of the tracers, chemical‐shift perturbations were observed in the loop region involving residues Gly25‐Lys28 and Ile32‐Gly33, thus suggesting that the PET tracer molecules interact with the loop region connecting β‐sheets β1 and β2 in Aβ fibrils. We found that titration of the PiB derivatives suppressed fibril polymorphism and stabilized the amyloid fibril structure.
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Affiliation(s)
- Zheng Niu
- Munich Center for Integrated Protein Science (CIPS-M) Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany.,Helmholtz-Zentrum München, Institute of Structural Biology (STB), Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Riddhiman Sarkar
- Munich Center for Integrated Protein Science (CIPS-M) Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany.,Helmholtz-Zentrum München, Institute of Structural Biology (STB), Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Michaela Aichler
- Helmholtz Zentrum München, Research Unit Analytical Pathology (AAP), Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Hans-Jürgen Wester
- Technische Universität München, Department of Pharmaceutical Radiochemistry, Walther-Meißner-Strasse 3, 85748, Garching, Germany
| | - Behrooz Hooshyar Yousefi
- Technische Universität München, Department of Pharmaceutical Radiochemistry, Walther-Meißner-Strasse 3, 85748, Garching, Germany.,Philipps University of Marburg, Department of Nuclear Medicine, Baldingerstrasse. 1, 35043, Marburg, Germany
| | - Bernd Reif
- Munich Center for Integrated Protein Science (CIPS-M) Department Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany.,Helmholtz-Zentrum München, Institute of Structural Biology (STB), Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
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9
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Hofmann I, Kemter E, Theobalt N, Fiedler S, Bidlingmaier M, Hinrichs A, Aichler M, Burkhardt K, Klymiuk N, Wolf E, Wanke R, Blutke A. Linkage between growth retardation and pituitary cell morphology in a dystrophin-deficient pig model of Duchenne muscular dystrophy. Growth Horm IGF Res 2020; 51:6-16. [PMID: 31926372 DOI: 10.1016/j.ghir.2019.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 12/16/2019] [Accepted: 12/30/2019] [Indexed: 01/08/2023]
Abstract
OBJECTIVE Human patients with Duchenne muscular dystrophy (DMD) commonly exhibit a short stature, but the pathogenesis of this growth retardation is not completely understood. Due to the suspected involvement of the growth hormone/insulin-like growth factor 1 (GH/IGF1) system, controversial therapeutic approaches have been developed, including both GH- administration, as well as GH-inhibition. In the present study, we examined relevant histomorphological and ultrastructural features of adenohypophyseal GH-producing somatotroph cells in a porcine DMD model. METHODS The numbers and volumes of immunohistochemically labelled somatotroph cells were determined in consecutive semi-thin sections of plastic resin embedded adenohypophyseal tissue samples using unbiased state-of-the-art quantitative stereological analysis methods. RESULTS DMD pigs displayed a significant growth retardation, accounting for a 55% reduction of body weight, accompanied by a significant 50% reduction of the number of somatotroph cells, as compared to controls. However, the mean volumes of somatotroph cells and the volume of GH-granules per cell were not altered. Western blot analyses of the adenohypophyseal protein samples showed no differences in the relative adenohypophyseal GH-abundance between DMD pigs and controls. CONCLUSION The findings of this study do not provide evidence for involvement of somatotroph cells in the pathogenesis of growth retardation of DMD pigs. These results are in contrast with previous findings in other dystrophin-deficient animal models, such as the golden retriever model of Duchenne muscular dystrophy, where increased mean somatotroph cell volumes and elevated volumes of intracellular GH-granules were reported and associated with DMD-related growth retardation. Possible reasons for the differences of somatotroph morphology observed in different DMD models are discussed.
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Affiliation(s)
- I Hofmann
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - E Kemter
- Chair for Molecular Animal Breeding and Biotechnology, Gene Centre and Department of Veterinary Sciences, Ludwig-Maximilians-Universität München, Munich, Germany; Centre for Innovative Medical Models (CiMM), Ludwig-Maximilians-Universität München, Oberschleißheim, Germany
| | - N Theobalt
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - S Fiedler
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - M Bidlingmaier
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - A Hinrichs
- Chair for Molecular Animal Breeding and Biotechnology, Gene Centre and Department of Veterinary Sciences, Ludwig-Maximilians-Universität München, Munich, Germany; Centre for Innovative Medical Models (CiMM), Ludwig-Maximilians-Universität München, Oberschleißheim, Germany
| | - M Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - K Burkhardt
- Chair for Molecular Animal Breeding and Biotechnology, Gene Centre and Department of Veterinary Sciences, Ludwig-Maximilians-Universität München, Munich, Germany; Centre for Innovative Medical Models (CiMM), Ludwig-Maximilians-Universität München, Oberschleißheim, Germany
| | - N Klymiuk
- Chair for Molecular Animal Breeding and Biotechnology, Gene Centre and Department of Veterinary Sciences, Ludwig-Maximilians-Universität München, Munich, Germany; Centre for Innovative Medical Models (CiMM), Ludwig-Maximilians-Universität München, Oberschleißheim, Germany
| | - E Wolf
- Chair for Molecular Animal Breeding and Biotechnology, Gene Centre and Department of Veterinary Sciences, Ludwig-Maximilians-Universität München, Munich, Germany; Centre for Innovative Medical Models (CiMM), Ludwig-Maximilians-Universität München, Oberschleißheim, Germany; Laboratory for Functional Genome Analysis (LAFUGA), Gene Centre, Ludwig-Maximilians-Universität München, Munich, Germany
| | - R Wanke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - A Blutke
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany.
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10
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Kunzke T, Buck A, Prade VM, Feuchtinger A, Prokopchuk O, Martignoni ME, Heisz S, Hauner H, Janssen KP, Walch A, Aichler M. Derangements of amino acids in cachectic skeletal muscle are caused by mitochondrial dysfunction. J Cachexia Sarcopenia Muscle 2020; 11:226-240. [PMID: 31965747 PMCID: PMC7015243 DOI: 10.1002/jcsm.12498] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 07/12/2019] [Accepted: 08/25/2019] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Cachexia is the direct cause of at least 20% of cancer-associated deaths. Muscle wasting in skeletal muscle results in weakness, immobility, and death secondary to impaired respiratory muscle function. Muscle proteins are massively degraded in cachexia; nevertheless, the molecular mechanisms related to this process are poorly understood. Previous studies have reported conflicting results regarding the amino acid abundances in cachectic skeletal muscle tissues. There is a clear need to identify the molecular processes of muscle metabolism in the context of cachexia, especially how different types of molecules are involved in the muscle wasting process. METHODS New in situ -omics techniques were used to produce a more comprehensive picture of amino acid metabolism in cachectic muscles by determining the quantities of amino acids, proteins, and cellular metabolites. Using matrix-assisted laser desorption/ionization (MALDI) mass spectrometry imaging, we determined the in situ concentrations of amino acids and proteins, as well as energy and other cellular metabolites, in skeletal muscle tissues from genetic mouse cancer models (n = 21) and from patients with cancer (n = 6). Combined results from three individual MALDI mass spectrometry imaging methods were obtained and interpreted. Immunohistochemistry staining for mitochondrial proteins and myosin heavy chain expression, digital image analysis, and transmission electron microscopy complemented the MALDI mass spectrometry imaging results. RESULTS Metabolic derangements in cachectic mouse muscle tissues were detected, with significantly increased quantities of lysine, arginine, proline, and tyrosine (P = 0.0037, P = 0.0048, P = 0.0430, and P = 0.0357, respectively) and significantly reduced quantities of glutamate and aspartate (P = 0.0008 and P = 0.0124). Human skeletal muscle tissues revealed similar tendencies. A majority of altered amino acids were released by the breakdown of proteins involved in oxidative phosphorylation. Decreased energy charge was observed in cachectic muscle tissues (P = 0.0101), which was related to the breakdown of specific proteins. Additionally, expression of the cationic amino acid transporter CAT1 was significantly decreased in the mitochondria of cachectic mouse muscles (P = 0.0133); this decrease may play an important role in the alterations of cationic amino acid metabolism and decreased quantity of glutamate observed in cachexia. CONCLUSIONS Our results suggest that mitochondrial dysfunction has a substantial influence on amino acid metabolism in cachectic skeletal muscles, which appears to be triggered by diminished CAT1 expression, as well as the degradation of mitochondrial proteins. These findings provide new insights into the pathobiochemistry of muscle wasting.
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Affiliation(s)
- Thomas Kunzke
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Oberschleißheim, Germany
| | - Achim Buck
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Oberschleißheim, Germany
| | - Verena M Prade
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Oberschleißheim, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Oberschleißheim, Germany
| | - Olga Prokopchuk
- Department of Surgery, Klinikum rechts der Isar, TUM, Munich, Germany
| | - Marc E Martignoni
- Department of Surgery, Klinikum rechts der Isar, TUM, Munich, Germany
| | - Simone Heisz
- Else Kroener-Fresenius-Center for Nutritional Medicine, Klinikum rechts der Isar, TUM, Munich, Germany.,ZIEL-Institute for Food and Health, Nutritional Medicine Unit, TUM, Freising, Germany
| | - Hans Hauner
- Else Kroener-Fresenius-Center for Nutritional Medicine, Klinikum rechts der Isar, TUM, Munich, Germany.,ZIEL-Institute for Food and Health, Nutritional Medicine Unit, TUM, Freising, Germany
| | | | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Oberschleißheim, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Oberschleißheim, Germany
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11
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Correa-Gallegos D, Jiang D, Christ S, Ramesh P, Ye H, Wannemacher J, Kalgudde Gopal S, Yu Q, Aichler M, Walch A, Mirastschijski U, Volz T, Rinkevich Y. Patch repair of deep wounds by mobilized fascia. Nature 2019; 576:287-292. [PMID: 31776510 DOI: 10.1038/s41586-019-1794-y] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 10/30/2019] [Indexed: 02/07/2023]
Abstract
Mammals form scars to quickly seal wounds and ensure survival by an incompletely understood mechanism1-5. Here we show that skin scars originate from prefabricated matrix in the subcutaneous fascia. Fate mapping and live imaging revealed that fascia fibroblasts rise to the skin surface after wounding, dragging their surrounding extracellular jelly-like matrix, including embedded blood vessels, macrophages and peripheral nerves, to form the provisional matrix. Genetic ablation of fascia fibroblasts prevented matrix from homing into wounds and resulted in defective scars, whereas placing an impermeable film beneath the skin-preventing fascia fibroblasts from migrating upwards-led to chronic open wounds. Thus, fascia contains a specialized prefabricated kit of sentry fibroblasts, embedded within a movable sealant, that preassemble together diverse cell types and matrix components needed to heal wounds. Our findings suggest that chronic and excessive skin wounds may be attributed to the mobility of the fascia matrix.
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Affiliation(s)
- Donovan Correa-Gallegos
- Group Regenerative Biology and Medicine, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany
| | - Dongsheng Jiang
- Group Regenerative Biology and Medicine, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany
| | - Simon Christ
- Group Regenerative Biology and Medicine, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany
| | - Pushkar Ramesh
- Group Regenerative Biology and Medicine, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany
| | - Haifeng Ye
- Group Regenerative Biology and Medicine, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany
| | - Juliane Wannemacher
- Group Regenerative Biology and Medicine, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany
| | - Shruthi Kalgudde Gopal
- Group Regenerative Biology and Medicine, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany
| | - Qing Yu
- Group Regenerative Biology and Medicine, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Munich, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Munich, Germany
| | - Ursula Mirastschijski
- Mira-Beau Gender Esthetics, Berlin, Germany.,Wound Repair Unit, CBIB, Department of Biology and Biochemistry, University of Bremen, Bremen, Germany
| | - Thomas Volz
- Department of Dermatology and Allergology, School of Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Yuval Rinkevich
- Group Regenerative Biology and Medicine, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Munich, Germany. .,German Centre for Lung Research (DZL), Munich, Germany.
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12
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Sun N, Kunzke T, Sbiera S, Kircher S, Feuchtinger A, Aichler M, Herterich S, Ronchi CL, Weigand I, Schlegel N, Waldmann J, Candida Villares Fragoso M, Whitsett TG, Gill AJ, Fassnacht M, Walch A, Kroiss M. Prognostic Relevance of Steroid Sulfation in Adrenocortical Carcinoma Revealed by Molecular Phenotyping Using High-Resolution Mass Spectrometry Imaging. Clin Chem 2019; 65:1276-1286. [PMID: 31492715 DOI: 10.1373/clinchem.2019.306043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/23/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Adrenocortical carcinoma (ACC) is a rare tumor with variable prognosis even within the same tumor stage. Cancer-related sex hormones and their sulfated metabolites in body fluids can be used as tumor markers. The role of steroid sulfation in ACC has not yet been studied. MALDI mass spectrometry imaging (MALDI-MSI) is a novel tool for tissue-based chemical phenotyping. METHODS We performed phenotyping of formalin-fixed, paraffin-embedded tissue samples from 72 ACC by MALDI-MSI at a metabolomics level. RESULTS Tumoral steroid hormone metabolites-estradiol sulfate [hazard ratio (HR) 0.26; 95% CI, 0.10-0.69; P = 0.005] and estrone 3-sulfate (HR 0.22; 95% CI, 0.07-0.63; P = 0.003)-were significantly associated with prognosis in Kaplan-Meier analyses and after multivariable adjustment for age, tumor stage, and sex (HR 0.29; 95% CI, 0.11-0.79; P = 0.015 and HR 0.30; 95% CI, 0.10-0.91; P = 0.033, respectively). Expression of sulfotransferase SULT2A1 was associated with prognosis to a similar extent and was validated to be a prognostic factor in two published data sets. We discovered the presence of estradiol-17β 3,17-disulfate (E2S2) in a subset of tumors with particularly poor overall survival. Electron microscopy revealed novel membrane-delimited organelles in only these tumors. By applying cluster analyses of metabolomic data, 3 sulfation-related phenotypes exhibited specific metabolic features unrelated to steroid metabolism. CONCLUSIONS MALDI-MSI provides novel insights into the pathophysiology of ACC. Steroid hormone sulfation may be used for prognostication and treatment stratification. Sulfation-related metabolic reprogramming may be of relevance also in conditions beyond the rare ACC and can be directly investigated by the use of MALDI-MSI.
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Affiliation(s)
- Na Sun
- Research Unit Analytical Pathology, German Research Center for Environmental Health, Helmholtz Zentrum München, Neuherberg, Germany;
| | - Thomas Kunzke
- Research Unit Analytical Pathology, German Research Center for Environmental Health, Helmholtz Zentrum München, Neuherberg, Germany;
| | - Silviu Sbiera
- Department of Internal Medicine, Division of Endocrinology and Diabetology, University Hospital Würzburg, Würzburg, Germany
| | - Stefan Kircher
- Institute of Pathology, University of Würzburg, Würzburg, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, German Research Center for Environmental Health, Helmholtz Zentrum München, Neuherberg, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, German Research Center for Environmental Health, Helmholtz Zentrum München, Neuherberg, Germany
| | - Sabine Herterich
- Central Laboratory, University Hospital Würzburg, Würzburg, Germany
| | - Cristina L Ronchi
- Department of Internal Medicine, Division of Endocrinology and Diabetology, University Hospital Würzburg, Würzburg, Germany.,Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - Isabel Weigand
- Department of Internal Medicine, Division of Endocrinology and Diabetology, University Hospital Würzburg, Würzburg, Germany
| | - Nicolas Schlegel
- Department of General, Visceral, Vascular, and Paediatric Surgery, University Hospital Würzburg, Würzburg, Germany.,Comprehensive Cancer Center Mainfranken, University of Würzburg, Würzburg, Germany
| | | | | | | | - Anthony J Gill
- Royal North Shore Hospital and The University of Sydney, Sydney, Australia
| | - Martin Fassnacht
- Department of Internal Medicine, Division of Endocrinology and Diabetology, University Hospital Würzburg, Würzburg, Germany.,Central Laboratory, University Hospital Würzburg, Würzburg, Germany.,Comprehensive Cancer Center Mainfranken, University of Würzburg, Würzburg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, German Research Center for Environmental Health, Helmholtz Zentrum München, Neuherberg, Germany
| | - Matthias Kroiss
- Department of Internal Medicine, Division of Endocrinology and Diabetology, University Hospital Würzburg, Würzburg, Germany; .,Central Laboratory, University Hospital Würzburg, Würzburg, Germany.,Comprehensive Cancer Center Mainfranken, University of Würzburg, Würzburg, Germany
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13
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Sammer M, Teiluf K, Girst S, Greubel C, Reindl J, Ilicic K, Walsh DWM, Aichler M, Walch A, Combs SE, Wilkens JJ, Dollinger G, Schmid TE. Beam size limit for pencil minibeam radiotherapy determined from side effects in an in-vivo mouse ear model. PLoS One 2019; 14:e0221454. [PMID: 31483811 PMCID: PMC6726230 DOI: 10.1371/journal.pone.0221454] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 08/06/2019] [Indexed: 11/29/2022] Open
Abstract
Side effects caused by radiation are a limiting factor to the amount of dose that can be applied to a tumor volume. A novel method to reduce side effects in radiotherapy is the use of spatial fractionation, in which a pattern of sub-millimeter beams (minibeams) is applied to spare healthy tissue. In order to determine the skin reactions in dependence of single beam sizes, which are relevant for spatially fractionated radiotherapy approaches, single pencil beams of submillimeter to 6 millimeter size were applied in BALB/c mice ears at a Small Animal Radiation Research Platform (SARRP) with a plateau dose of 60 Gy. Radiation toxicities in the ears were observed for 25 days after irradiation. Severe radiation responses were found for beams ≥ 3 mm diameter. The larger the beam diameter the stronger the observed reactions. No ear swelling and barely reddening or desquamation were found for the smallest beam sizes (0.5 and 1 mm). The findings were confirmed by histological sections. Submillimeter beams are preferred in minibeam therapy to obtain optimized tissue sparing. The gradual increase of radiation toxicity with beam size shows that also larger beams are capable of healthy tissue sparing in spatial fractionation.
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Affiliation(s)
- Matthias Sammer
- Institut für Angewandte Physik und Messtechnik (LRT2), Universität der Bundeswehr München, Neubiberg, Germany
- * E-mail:
| | - Katharina Teiluf
- Department of Radiation Oncology, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
- Institut für innovative Radiotherapy (iRT), Department of Radiation Sciences (DRS), Helmholtz Zentrum München (HMGU), Oberschleißheim, Germany
- Deutches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, Munich, Germany
| | - Stefanie Girst
- Institut für Angewandte Physik und Messtechnik (LRT2), Universität der Bundeswehr München, Neubiberg, Germany
| | - Christoph Greubel
- Institut für Angewandte Physik und Messtechnik (LRT2), Universität der Bundeswehr München, Neubiberg, Germany
| | - Judith Reindl
- Institut für Angewandte Physik und Messtechnik (LRT2), Universität der Bundeswehr München, Neubiberg, Germany
| | - Katarina Ilicic
- Department of Radiation Oncology, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
- Institut für innovative Radiotherapy (iRT), Department of Radiation Sciences (DRS), Helmholtz Zentrum München (HMGU), Oberschleißheim, Germany
- Deutches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, Munich, Germany
| | - Dietrich W. M. Walsh
- Institut für Angewandte Physik und Messtechnik (LRT2), Universität der Bundeswehr München, Neubiberg, Germany
- Department of Radiation Oncology, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Oberschleißheim, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Oberschleißheim, Germany
| | - Stephanie E. Combs
- Department of Radiation Oncology, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
- Institut für innovative Radiotherapy (iRT), Department of Radiation Sciences (DRS), Helmholtz Zentrum München (HMGU), Oberschleißheim, Germany
- Deutches Konsortium für Translationale Krebsforschung (DKTK), Partner Site Munich, Munich, Germany
| | - Jan J. Wilkens
- Department of Radiation Oncology, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
- Institut für innovative Radiotherapy (iRT), Department of Radiation Sciences (DRS), Helmholtz Zentrum München (HMGU), Oberschleißheim, Germany
| | - Günther Dollinger
- Institut für Angewandte Physik und Messtechnik (LRT2), Universität der Bundeswehr München, Neubiberg, Germany
| | - Thomas E. Schmid
- Department of Radiation Oncology, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
- Institut für innovative Radiotherapy (iRT), Department of Radiation Sciences (DRS), Helmholtz Zentrum München (HMGU), Oberschleißheim, Germany
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14
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Sigmund F, Pettinger S, Kube M, Schneider F, Schifferer M, Schneider S, Efremova MV, Pujol-Martí J, Aichler M, Walch A, Misgeld T, Dietz H, Westmeyer GG. Iron-Sequestering Nanocompartments as Multiplexed Electron Microscopy Gene Reporters. ACS Nano 2019; 13:8114-8123. [PMID: 31194509 DOI: 10.1021/acsnano.9b03140] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Multicolored gene reporters for light microscopy are indispensable for biomedical research, but equivalent genetic tools for electron microscopy (EM) are still rare despite the increasing importance of nanometer resolution for reverse engineering of molecular machinery and reliable mapping of cellular circuits. We here introduce the fully genetic encapsulin/cargo system of Quasibacillus thermotolerans (Qt), which in combination with the recently characterized encapsulin system from Myxococcus xanthus (Mx) enables multiplexed gene reporter imaging via conventional transmission electron microscopy (TEM) in mammalian cells. Cryo-electron reconstructions revealed that the Qt encapsulin shell self-assembles to nanospheres with T = 4 icosahedral symmetry and a diameter of ∼43 nm harboring two putative pore regions at the 5-fold and 3-fold axes. We also found that upon heterologous expression in mammalian cells, the native cargo is autotargeted to the inner surface of the shell and exhibits ferroxidase activity leading to efficient intraluminal iron biomineralization, which enhances cellular TEM contrast. We furthermore demonstrate that the two differently sized encapsulins of Qt and Mx do not intermix and can be robustly differentiated by conventional TEM via a deep learning classifier to enable automated multiplexed EM gene reporter imaging.
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Affiliation(s)
- Felix Sigmund
- Department of Nuclear Medicine, TUM School of Medicine , Technical University of Munich , 81675 Munich , Germany
- Institute of Biological and Medical Imaging , Helmholtz Zentrum München , 85764 Neuherberg , Germany
- Institute of Developmental Genetics , Helmholtz Zentrum München , 85764 Neuherberg , Germany
| | - Susanne Pettinger
- Department of Nuclear Medicine, TUM School of Medicine , Technical University of Munich , 81675 Munich , Germany
- Institute of Biological and Medical Imaging , Helmholtz Zentrum München , 85764 Neuherberg , Germany
- Institute of Developmental Genetics , Helmholtz Zentrum München , 85764 Neuherberg , Germany
| | - Massimo Kube
- Laboratory for Biomolecular Design, Department of Physics , Technical University of Munich , 85748 Garching , Germany
| | - Fabian Schneider
- Laboratory for Biomolecular Design, Department of Physics , Technical University of Munich , 85748 Garching , Germany
| | - Martina Schifferer
- Institute of Neuronal Cell Biology, TUM School of Medicine , Technical University of Munich , 80802 Munich , Germany
- German Center for Neurodegenerative Diseases (DZNE) , 81377 Munich , Germany
| | - Steffen Schneider
- Computational Neuroengineering, Department of Electrical and Computer Engineering , Technical University of Munich , 80333 Munich , Germany
- Tübingen AI Center , University of Tübingen , 72076 Tübingen , Germany
| | - Maria V Efremova
- Department of Nuclear Medicine, TUM School of Medicine , Technical University of Munich , 81675 Munich , Germany
- Institute of Biological and Medical Imaging , Helmholtz Zentrum München , 85764 Neuherberg , Germany
- Institute of Developmental Genetics , Helmholtz Zentrum München , 85764 Neuherberg , Germany
- Laboratory of Chemical Design of Bionanomaterials for Medical Applications, Department of Chemistry , Lomonosov Moscow State University , 119991 Moscow , Russian Federation
| | - Jesús Pujol-Martí
- Department "Circuits - Computation - Models" , Max Planck Institute of Neurobiology , 82152 Martinsried , Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology , Helmholtz Zentrum München , 85764 Neuherberg , Germany
| | - Axel Walch
- Research Unit Analytical Pathology , Helmholtz Zentrum München , 85764 Neuherberg , Germany
| | - Thomas Misgeld
- Institute of Neuronal Cell Biology, TUM School of Medicine , Technical University of Munich , 80802 Munich , Germany
- German Center for Neurodegenerative Diseases (DZNE) , 81377 Munich , Germany
| | - Hendrik Dietz
- Laboratory for Biomolecular Design, Department of Physics , Technical University of Munich , 85748 Garching , Germany
| | - Gil G Westmeyer
- Department of Nuclear Medicine, TUM School of Medicine , Technical University of Munich , 81675 Munich , Germany
- Institute of Biological and Medical Imaging , Helmholtz Zentrum München , 85764 Neuherberg , Germany
- Institute of Developmental Genetics , Helmholtz Zentrum München , 85764 Neuherberg , Germany
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15
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Altamura S, Vegi NM, Hoppe PS, Schroeder T, Aichler M, Walch A, Okreglicka K, Hültner L, Schneider M, Ladinig C, Kuklik-Roos C, Mysliwietz J, Janik D, Neff F, Rathkolb B, de Angelis MTH, Buske C, Silva ARD, Muedder K, Conrad M, Ganz T, Kopf M, Muckenthaler MU, Bornkamm GW. Glutathione peroxidase 4 and vitamin E control reticulocyte maturation, stress erythropoiesis and iron homeostasis. Haematologica 2019; 105:937-950. [PMID: 31248967 PMCID: PMC7109755 DOI: 10.3324/haematol.2018.212977] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 06/20/2019] [Indexed: 12/27/2022] Open
Abstract
Glutathione peroxidase 4 (GPX4) is unique as it is the only enzyme that can prevent detrimental lipid peroxidation in vivo by reducing lipid peroxides to the respective alcohols thereby stabilizing oxidation products of unsaturated fatty acids. During reticulocyte maturation, lipid peroxidation mediated by 15-lipoxygenase in humans and rabbits and by 12/15-lipoxygenase (ALOX15) in mice was considered the initiating event for the elimination of mitochondria but is now known to occur through mitophagy. Yet, genetic ablation of the Alox15 gene in mice failed to provide evidence for this hypothesis. We designed a different genetic approach to tackle this open conundrum. Since either other lipoxygenases or non-enzymatic autooxidative mechanisms may compensate for the loss of Alox15, we asked whether ablation of Gpx4 in the hematopoietic system would result in the perturbation of reticulocyte maturation. Quantitative assessment of erythropoiesis indices in the blood, bone marrow (BM) and spleen of chimeric mice with Gpx4 ablated in hematopoietic cells revealed anemia with an increase in the fraction of erythroid precursor cells and reticulocytes. Additional dietary vitamin E depletion strongly aggravated the anemic phenotype. Despite strong extramedullary erythropoiesis reticulocytes failed to mature and accumulated large autophagosomes with engulfed mitochondria. Gpx4-deficiency in hematopoietic cells led to systemic hepatic iron overload and simultaneous severe iron demand in the erythroid system. Despite extremely high erythropoietin and erythroferrone levels in the plasma, hepcidin expression remained unchanged. Conclusively, perturbed reticulocyte maturation in response to Gpx4 loss in hematopoietic cells thus causes ineffective erythropoiesis, a phenotype partially masked by dietary vitamin E supplementation.
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Affiliation(s)
- Sandro Altamura
- Department of Pediatric Hematology, Oncology and Immunology - University of Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit, Heidelberg, Germany
| | - Naidu M Vegi
- Institute of Experimental Cancer Research, Universitätsklinikum Ulm, Ulm, Germany
| | - Philipp S Hoppe
- Department of Biosystems Bioscience and Engineering, ETH Zürich, Basel, Switzerland
| | - Timm Schroeder
- Department of Biosystems Bioscience and Engineering, ETH Zürich, Basel, Switzerland
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Neuherberg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Neuherberg, Germany
| | | | - Lothar Hültner
- Institute of Clinical Molecular Biology and Tumor Genetics, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), München, Germany
| | - Manuela Schneider
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, München, Germany
| | - Camilla Ladinig
- Institute of Clinical Molecular Biology and Tumor Genetics, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), München, Germany
| | - Cornelia Kuklik-Roos
- Institute of Clinical Molecular Biology and Tumor Genetics, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), München, Germany
| | - Josef Mysliwietz
- Institute of Molecular Immunology, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), München, Germany
| | - Dirk Janik
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Neuherberg, Germany
| | - Frauke Neff
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Neuherberg, Germany
| | - Birgit Rathkolb
- Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians-Universität München, Genzentum, München, Germany.,Institute of Experimental Genetics, Geman Mouse Clinic (GMC), Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Neuherberg, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Mar Tin Hrabé de Angelis
- Institute of Experimental Genetics, Geman Mouse Clinic (GMC), Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Neuherberg, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany.,Chair of Experimental Genetics, School of Life Science Weihenstephan, Technische Universität München, Freising, Germany
| | - Christian Buske
- Institute of Experimental Cancer Research, Universitätsklinikum Ulm, Ulm, Germany
| | - Ana Rita da Silva
- Department of Pediatric Hematology, Oncology and Immunology - University of Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit, Heidelberg, Germany
| | - Katja Muedder
- Department of Pediatric Hematology, Oncology and Immunology - University of Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit, Heidelberg, Germany
| | - Marcus Conrad
- Institute of Developmental Genetics, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Neuherberg, Germany
| | - Tomas Ganz
- Departments of Medicine and Pathology, David Geffen School of Medicine, UCLA, Los Angeles, CA, USA
| | - Manfred Kopf
- Institute of Molecular Health Sciences, ETH Zurich, Zürich, Switzerland
| | - Martina U Muckenthaler
- Department of Pediatric Hematology, Oncology and Immunology - University of Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit, Heidelberg, Germany
| | - Georg W Bornkamm
- Institute of Clinical Molecular Biology and Tumor Genetics, Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), München, Germany
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16
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Gujrati V, Prakash J, Malekzadeh-Najafabadi J, Stiel A, Klemm U, Mettenleiter G, Aichler M, Walch A, Ntziachristos V. Bioengineered bacterial vesicles as biological nano-heaters for optoacoustic imaging. Nat Commun 2019; 10:1114. [PMID: 30846699 PMCID: PMC6405847 DOI: 10.1038/s41467-019-09034-y] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 02/07/2019] [Indexed: 11/08/2022] Open
Abstract
Advances in genetic engineering have enabled the use of bacterial outer membrane vesicles (OMVs) to deliver vaccines, drugs and immunotherapy agents, as a strategy to circumvent biocompatibility and large-scale production issues associated with synthetic nanomaterials. We investigate bioengineered OMVs for contrast enhancement in optoacoustic (photoacoustic) imaging. We produce OMVs encapsulating biopolymer-melanin (OMVMel) using a bacterial strain expressing a tyrosinase transgene. Our results show that upon near-infrared light irradiation, OMVMel generates strong optoacoustic signals appropriate for imaging applications. In addition, we show that OMVMel builds up intense heat from the absorbed laser energy and mediates photothermal effects both in vitro and in vivo. Using multispectral optoacoustic tomography, we noninvasively monitor the spatio-temporal, tumour-associated OMVMel distribution in vivo. This work points to the use of bioengineered vesicles as potent alternatives to synthetic particles more commonly employed for optoacoustic imaging, with the potential to enable both image enhancement and photothermal applications.
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Affiliation(s)
- Vipul Gujrati
- Chair of Biological Imaging, TranslaTUM, Technische Universität München, Munich, 81675, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Jaya Prakash
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Jaber Malekzadeh-Najafabadi
- Chair of Biological Imaging, TranslaTUM, Technische Universität München, Munich, 81675, Germany
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Andre Stiel
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Uwe Klemm
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Gabriele Mettenleiter
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, 85764, Germany
| | - Vasilis Ntziachristos
- Chair of Biological Imaging, TranslaTUM, Technische Universität München, Munich, 81675, Germany.
- Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, 85764, Germany.
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17
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Görgülü K, Diakopoulos KN, Ai J, Schoeps B, Kabacaoglu D, Karpathaki AF, Ciecielski KJ, Kaya-Aksoy E, Ruess DA, Berninger A, Kowalska M, Stevanovic M, Wörmann SM, Wartmann T, Zhao Y, Halangk W, Voronina S, Tepikin A, Schlitter AM, Steiger K, Artati A, Adamski J, Aichler M, Walch A, Jastroch M, Hartleben G, Mantzoros CS, Weichert W, Schmid RM, Herzig S, Krüger A, Sainz B, Lesina M, Algül H. Levels of the Autophagy-Related 5 Protein Affect Progression and Metastasis of Pancreatic Tumors in Mice. Gastroenterology 2019; 156:203-217.e20. [PMID: 30296435 DOI: 10.1053/j.gastro.2018.09.053] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 09/27/2018] [Accepted: 09/28/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Cells in pancreatic ductal adenocarcinoma (PDAC) undergo autophagy, but its effects vary with tumor stage and genetic factors. We investigated the consequences of varying levels of the autophagy related 5 (Atg5) protein on pancreatic tumor formation and progression. METHODS We generated mice that express oncogenic Kras in primary pancreatic cancer cells and have homozygous disruption of Atg5 (A5;Kras) or heterozygous disruption of Atg5 (A5+/-;Kras), and compared them with mice with only oncogenic Kras (controls). Pancreata were analyzed by histology and immunohistochemistry. Primary tumor cells were isolated and used to perform transcriptome, metabolome, intracellular calcium, extracellular cathepsin activity, and cell migration and invasion analyses. The cells were injected into wild-type littermates, and orthotopic tumor growth and metastasis were monitored. Atg5 was knocked down in pancreatic cancer cell lines using small hairpin RNAs; cell migration and invasion were measured, and cells were injected into wild-type littermates. PDAC samples were obtained from independent cohorts of patients and protein levels were measured on immunoblot and immunohistochemistry; we tested the correlation of protein levels with metastasis and patient survival times. RESULTS A5+/-;Kras mice, with reduced Atg5 levels, developed more tumors and metastases, than control mice, whereas A5;Kras mice did not develop any tumors. Cultured A5+/-;Kras primary tumor cells were resistant to induction and inhibition of autophagy, had altered mitochondrial morphology, compromised mitochondrial function, changes in intracellular Ca2+ oscillations, and increased activity of extracellular cathepsin L and D. The tumors that formed in A5+/-;Kras mice contained greater numbers of type 2 macrophages than control mice, and primary A5+/-;Kras tumor cells had up-regulated expression of cytokines that regulate macrophage chemoattraction and differentiation into M2 macrophage. Knockdown of Atg5 in pancreatic cancer cell lines increased their migratory and invasive capabilities, and formation of metastases following injection into mice. In human PDAC samples, lower levels of ATG5 associated with tumor metastasis and shorter survival time. CONCLUSIONS In mice that express oncogenic Kras in pancreatic cells, heterozygous disruption of Atg5 and reduced protein levels promotes tumor development, whereas homozygous disruption of Atg5 blocks tumorigenesis. Therapeutic strategies to alter autophagy in PDAC should consider the effects of ATG5 levels to avoid the expansion of resistant and highly aggressive cells.
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Affiliation(s)
- Kivanc Görgülü
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Kalliope N Diakopoulos
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Jiaoyu Ai
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Benjamin Schoeps
- Institute of Molecular Immunology and Experimental Oncology, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Derya Kabacaoglu
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Angeliki-Faidra Karpathaki
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Katrin J Ciecielski
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Ezgi Kaya-Aksoy
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Dietrich A Ruess
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Alexandra Berninger
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Marlena Kowalska
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Marija Stevanovic
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Sonja M Wörmann
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Thomas Wartmann
- Klinik für Chirurgie Bereich Experimentelle Operative Medizin, Universitätsklinikum Magdeburg, Magdeburg, Germany
| | - Yue Zhao
- Klinik für Chirurgie Bereich Experimentelle Operative Medizin, Universitätsklinikum Magdeburg, Magdeburg, Germany
| | - Walter Halangk
- Klinik für Chirurgie Bereich Experimentelle Operative Medizin, Universitätsklinikum Magdeburg, Magdeburg, Germany
| | - Svetlana Voronina
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Alexey Tepikin
- Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - Anna Melissa Schlitter
- Institute of Pathology, Technische Universität München, Munich, Germany and German Cancer Consortium, Munich, Germany
| | - Katja Steiger
- Institute of Pathology, Technische Universität München, Munich, Germany and German Cancer Consortium, Munich, Germany; Comparative Experimental Pathology, Institute of Pathology, Technische Universität München, Munich, Germany
| | - Anna Artati
- Institute of Experimental Genetics, Genome Analysis Centre, Helmholtz Zentrum München, Neuherberg, Germany
| | - Jerzy Adamski
- Institute of Experimental Genetics, Genome Analysis Centre, Helmholtz Zentrum München, Neuherberg, Germany; Institute for Diabetes and Cancer, German Center for Diabetes Research, Neuherberg, Germany; Lehrstuhl für Experimentelle Genetik, Technische Universität München, Freising-Weihenstephan, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Martin Jastroch
- Helmholtz Diabetes Center and German Diabetes Center, Helmholtz Zentrum München, Neuherberg, Germany
| | - Götz Hartleben
- Institute for Diabetes and Cancer, German Center for Diabetes Research, Neuherberg, Germany
| | - Christos S Mantzoros
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Centre, Harvard Medical School, Boston, Massachusetts
| | - Wilko Weichert
- Institute of Pathology, Technische Universität München, Munich, Germany and German Cancer Consortium, Munich, Germany
| | - Roland M Schmid
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Stephan Herzig
- Institute for Diabetes and Cancer, German Center for Diabetes Research, Neuherberg, Germany
| | - Achim Krüger
- Institute of Molecular Immunology and Experimental Oncology, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Bruno Sainz
- Department of Biochemistry, School of Medicine, Autónoma University of Madrid, Madrid, Spain
| | - Marina Lesina
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.
| | - Hana Algül
- Klinik und Poliklinik für Innere Medizin II, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.
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18
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Sun N, Fernandez IE, Wei M, Witting M, Aichler M, Feuchtinger A, Burgstaller G, Verleden SE, Schmitt-Kopplin P, Eickelberg O, Walch A. Pharmacometabolic response to pirfenidone in pulmonary fibrosis detected by MALDI-FTICR-MSI. Eur Respir J 2018; 52:13993003.02314-2017. [PMID: 30072508 DOI: 10.1183/13993003.02314-2017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 07/15/2018] [Indexed: 11/05/2022]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a fatal condition that reduces life expectancy and shows a limited response to available therapies. Pirfenidone has been approved for treatment of IPF, but little is known about the distinct metabolic changes that occur in the lung upon pirfenidone administration.Here, we performed a proof-of-concept study using high-resolution quantitative matrix-assisted laser desorption/ionisation Fourier-transform ion cyclotron resonance mass spectrometry imaging (MALDI-FTICR-MSI) to simultaneously detect, visualise and quantify in situ endogenous and exogenous metabolites in lungs of mice subjected to experimental fibrosis and human patients with IPF, and to assess the effect of pirfenidone treatment on metabolite levels.Metabolic pathway analysis and endogenous metabolite quantification revealed that pirfenidone treatment restores redox imbalance and glycolysis in IPF tissues, and downregulates ascorbate and aldarate metabolism, thereby likely contributing to in situ modulation of collagen processing. As such, we detected specific alterations in metabolite pathways in fibrosis and, importantly, metabolic recalibration following pirfenidone treatment.Together, these results highlight the suitability of high-resolution MALDI-FTICR-MSI for deciphering the therapeutic effects of pirfenidone and provide a preliminary analysis of the metabolic changes that occur during pirfenidone treatment in vivo These data may therefore contribute to improvement of currently available therapies for IPF.
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Affiliation(s)
- Na Sun
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany.,These authors contributed equally to this work
| | - Isis E Fernandez
- Comprehensive Pneumology Center, Helmholtz Zentrum München, Ludwig Maximilian University München, Member of the German Center for Lung Research (DZL), Munich, Germany.,These authors contributed equally to this work
| | - Mian Wei
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Michael Witting
- Research Unit Analytical BioGeoChemistry, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Gerald Burgstaller
- Comprehensive Pneumology Center, Helmholtz Zentrum München, Ludwig Maximilian University München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Stijn E Verleden
- Laboratory of Pneumology, Dept of Chronic Diseases, Metabolism and Aging, KU Leuven, Leuven, Belgium
| | - Philippe Schmitt-Kopplin
- Research Unit Analytical BioGeoChemistry, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| | - Oliver Eickelberg
- Comprehensive Pneumology Center, Helmholtz Zentrum München, Ludwig Maximilian University München, Member of the German Center for Lung Research (DZL), Munich, Germany.,Division of Respiratory Sciences and Critical Care Medicine, Dept of Medicine, University of Colorado, Denver, CO, USA.,These authors contributed equally to this work
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany.,These authors contributed equally to this work
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19
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Rodriguez Camargo DC, Garg D, Buday K, Franko A, Rodriguez Camargo A, Schmidt F, Cox SJ, Suladze S, Haslbeck M, Mideksa YG, Gemmecker G, Aichler M, Mettenleiter G, Schulz M, Walch AK, Hrabě de Angelis M, Feige MJ, Sierra CA, Conrad M, Tripsianes K, Ramamoorthy A, Reif B. hIAPP forms toxic oligomers in plasma. Chem Commun (Camb) 2018; 54:5426-5429. [PMID: 29745410 PMCID: PMC5970100 DOI: 10.1039/c8cc03097a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In diabetes, hyperamylinemia contributes to cardiac dysfunction. The interplay between hIAPP, blood glucose and other plasma components is, however, not understood. We show that glucose and LDL interact with hIAPP, resulting in β-sheet rich oligomers with increased β-cell toxicity and hemolytic activity, providing mechanistic insights for a direct link between diabetes and cardiovascular diseases.
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20
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Sun N, Wu Y, Nanba K, Sbiera S, Kircher S, Kunzke T, Aichler M, Berezowska S, Reibetanz J, Rainey WE, Fassnacht M, Walch A, Kroiss M. High-Resolution Tissue Mass Spectrometry Imaging Reveals a Refined Functional Anatomy of the Human Adult Adrenal Gland. Endocrinology 2018; 159:1511-1524. [PMID: 29385420 PMCID: PMC5839739 DOI: 10.1210/en.2018-00064] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 01/22/2018] [Indexed: 12/11/2022]
Abstract
In the adrenal gland, neuroendocrine cells that synthesize catecholamines and epithelial cells that produce steroid hormones are united beneath a common organ capsule to function as a single stress-responsive organ. The functional anatomy of the steroid hormone-producing adrenal cortex and the catecholamine-producing medulla is ill defined at the level of small molecules. Here, we report a comprehensive high-resolution mass spectrometry imaging (MSI) map of the normal human adrenal gland. A large variety of biomolecules was accessible by matrix-assisted laser desorption/ionization-Fourier transform-ion cyclotron resonance MSI, including nucleoside phosphates indicative of oxidative phosphorylation, sterol and steroid metabolites, intermediates of glycolysis and the tricarboxylic acid cycle, lipids, and fatty acids. Statistical clustering analyses yielded a molecularly defined adrenal anatomy of 10 distinct molecular zones including a highly structured corticomedullary interface. By incorporating pathway information, activities of carbohydrate, amino acid, and lipid metabolism as well as endocrine bioactivity were revealed to be highly spatially organized, which could be visualized as different molecularly defined zones. Together, these findings provide a molecular definition of human adult adrenal gland structure beyond classical histological anatomy.
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Affiliation(s)
- Na Sun
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | - Yin Wu
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | - Kazutaka Nanba
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan 48109-5622
| | - Silviu Sbiera
- Department of Internal Medicine, Division of Endocrinology and Diabetology, University Hospital Würzburg, University of Würzburg, 97080 Würzburg, Germany
| | - Stefan Kircher
- Institut für Pathologie, University of Würzburg, 97080 Würzburg, Germany
| | - Thomas Kunzke
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
| | | | - Joachim Reibetanz
- Department of General, Visceral, Vascular and Paediatric Surgery, University Hospital Würzburg, 97080 Würzburg, Germany
| | - William E. Rainey
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan 48109-5622
| | - Martin Fassnacht
- Department of Internal Medicine, Division of Endocrinology and Diabetology, University Hospital Würzburg, University of Würzburg, 97080 Würzburg, Germany
- Comprehensive Cancer Center Mainfranken, University of Würzburg, 97080 Würzburg, Germany
- Clinical Chemistry and Laboratory Medicine, University Hospital Würzburg, 97080 Würzburg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), 85764 Neuherberg, Germany
- Correspondence: Axel Walch, MD, Research Unit Analytical Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany. E-mail:
| | - Matthias Kroiss
- Department of Internal Medicine, Division of Endocrinology and Diabetology, University Hospital Würzburg, University of Würzburg, 97080 Würzburg, Germany
- Comprehensive Cancer Center Mainfranken, University of Würzburg, 97080 Würzburg, Germany
- Clinical Chemistry and Laboratory Medicine, University Hospital Würzburg, 97080 Würzburg, Germany
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21
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Ingold I, Berndt C, Schmitt S, Doll S, Poschmann G, Buday K, Roveri A, Peng X, Porto Freitas F, Seibt T, Mehr L, Aichler M, Walch A, Lamp D, Jastroch M, Miyamoto S, Wurst W, Ursini F, Arnér ES, Fradejas-Villar N, Schweizer U, Zischka H, Friedmann Angeli JP, Conrad M. Selenium Utilization by GPX4 Is Required to Prevent Hydroperoxide-Induced Ferroptosis. Cell 2018; 172:409-422.e21. [DOI: 10.1016/j.cell.2017.11.048] [Citation(s) in RCA: 458] [Impact Index Per Article: 76.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/16/2017] [Accepted: 11/28/2017] [Indexed: 01/11/2023]
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22
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Hachmöller O, Aichler M, Schwamborn K, Lutz L, Werner M, Sperling M, Walch A, Karst U. Investigating the influence of standard staining procedures on the copper distribution and concentration in Wilson's disease liver samples by laser ablation-inductively coupled plasma-mass spectrometry. J Trace Elem Med Biol 2017; 44:71-75. [PMID: 28965603 DOI: 10.1016/j.jtemb.2017.06.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 06/05/2017] [Accepted: 06/06/2017] [Indexed: 12/31/2022]
Abstract
The influence of rhodanine and haematoxylin and eosin (HE) staining on the copper distribution and concentration in liver needle biopsy samples originating from patients with Wilson's disease (WD), a rare autosomal recessive inherited disorder of the copper metabolism, is investigated. In contemporary diagnostic of WD, rhodanine staining is used for histopathology, since rhodanine and copper are forming a red to orange-red complex, which can be recognized in the liver tissue using a microscope. In this paper, a laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) method is applied for the analysis of eight different WD liver samples. Apart from a spatially resolved elemental detection as qualitative information, this LA-ICP-MS method offers also quantitative information by external calibration with matrix-matched gelatine standards. The sample set of this work included an unstained and a rhodanine stained section of each WD liver sample. While unstained sections of WD liver samples showed very distinct structures of the copper distribution with high copper concentrations, rhodanine stained sections revealed a blurred copper distribution with significant decreased concentrations in a range from 20 to more than 90%. This implies a copper removal from the liver tissue by complexation during the rhodanine staining. In contrast to this, a further HE stained sample of one WD liver sample did not show a significant decrease in the copper concentration and influence on the copper distribution in comparison to the unstained section. Therefore, HE staining can be combined with the analysis by means of LA-ICP-MS in two successive steps from one thin section of a biopsy specimen. This allows further information to be gained on the elemental distribution by LA-ICP-MS additional to results obtained by histological staining.
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Affiliation(s)
- Oliver Hachmöller
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149 Münster, Germany
| | - Michaela Aichler
- Helmholtz Zentrum München, Institut für Pathologie - Abteilung Analytische Pathologie, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Kristina Schwamborn
- Technische Universität München, Institut für Allgemeine Pathologie und Pathologische Anatomie, Trogerstraße 18, 81675 München, Germany
| | - Lisa Lutz
- Universitätsklinikum Freiburg, Institut für Klinische Pathologie, Breisacher Straße 115a, 79106 Freiburg, Germany
| | - Martin Werner
- Universitätsklinikum Freiburg, Institut für Klinische Pathologie, Breisacher Straße 115a, 79106 Freiburg, Germany
| | - Michael Sperling
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149 Münster, Germany; European Virtual Institute for Speciation Analysis (EVISA), Mendelstraße 11, 48149 Münster, Germany
| | - Axel Walch
- Helmholtz Zentrum München, Institut für Pathologie - Abteilung Analytische Pathologie, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Uwe Karst
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149 Münster, Germany.
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23
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Rodriguez Camargo DC, Korshavn KJ, Jussupow A, Raltchev K, Goricanec D, Fleisch M, Sarkar R, Xue K, Aichler M, Mettenleiter G, Walch AK, Camilloni C, Hagn F, Reif B, Ramamoorthy A. Stabilization and structural analysis of a membrane-associated hIAPP aggregation intermediate. eLife 2017; 6:31226. [PMID: 29148426 PMCID: PMC5706959 DOI: 10.7554/elife.31226] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Accepted: 11/14/2017] [Indexed: 12/21/2022] Open
Abstract
Membrane-assisted amyloid formation is implicated in human diseases, and many of the aggregating species accelerate amyloid formation and induce cell death. While structures of membrane-associated intermediates would provide tremendous insights into the pathology and aid in the design of compounds to potentially treat the diseases, it has not been feasible to overcome the challenges posed by the cell membrane. Here, we use NMR experimental constraints to solve the structure of a type-2 diabetes related human islet amyloid polypeptide intermediate stabilized in nanodiscs. ROSETTA and MD simulations resulted in a unique β-strand structure distinct from the conventional amyloid β-hairpin and revealed that the nucleating NFGAIL region remains flexible and accessible within this isolated intermediate, suggesting a mechanism by which membrane-associated aggregation may be propagated. The ability of nanodiscs to trap amyloid intermediates as demonstrated could become one of the most powerful approaches to dissect the complicated misfolding pathways of protein aggregation.
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Affiliation(s)
- Diana C Rodriguez Camargo
- Institute for Advanced Study, Technische Universität München, Garching, Germany.,Program in Biophysics, Department of Chemistry, University of Michigan, Ann Arbor, United States.,Center for Integrated Protein Science Munich (CIPSM), Department Chemie, Technische Universität München, Garching, Germany
| | - Kyle J Korshavn
- Program in Biophysics, Department of Chemistry, University of Michigan, Ann Arbor, United States
| | - Alexander Jussupow
- Institute for Advanced Study, Technische Universität München, Garching, Germany
| | - Kolio Raltchev
- Center for Integrated Protein Science Munich (CIPSM), Department Chemie, Technische Universität München, Garching, Germany
| | - David Goricanec
- Center for Integrated Protein Science Munich (CIPSM), Department Chemie, Technische Universität München, Garching, Germany
| | | | - Riddhiman Sarkar
- Center for Integrated Protein Science Munich (CIPSM), Department Chemie, Technische Universität München, Garching, Germany
| | - Kai Xue
- Helmholtz Zentrum München, Neuherberg, Germany
| | | | | | | | - Carlo Camilloni
- Institute for Advanced Study, Technische Universität München, Garching, Germany
| | - Franz Hagn
- Institute for Advanced Study, Technische Universität München, Garching, Germany.,Center for Integrated Protein Science Munich (CIPSM), Department Chemie, Technische Universität München, Garching, Germany.,Helmholtz Zentrum München, Neuherberg, Germany
| | - Bernd Reif
- Center for Integrated Protein Science Munich (CIPSM), Department Chemie, Technische Universität München, Garching, Germany.,Helmholtz Zentrum München, Neuherberg, Germany
| | - Ayyalusamy Ramamoorthy
- Institute for Advanced Study, Technische Universität München, Garching, Germany.,Program in Biophysics, Department of Chemistry, University of Michigan, Ann Arbor, United States
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24
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Knüppel L, Ishikawa Y, Aichler M, Heinzelmann K, Hatz R, Behr J, Walch A, Bächinger HP, Eickelberg O, Staab-Weijnitz CA. A Novel Antifibrotic Mechanism of Nintedanib and Pirfenidone. Inhibition of Collagen Fibril Assembly. Am J Respir Cell Mol Biol 2017; 57:77-90. [PMID: 28257580 DOI: 10.1165/rcmb.2016-0217oc] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is characterized by excessive deposition of extracellular matrix, in particular, collagens. Two IPF therapeutics, nintedanib and pirfenidone, decelerate lung function decline, but their underlying mechanisms of action are poorly understood. In this study, we sought to analyze their effects on collagen synthesis and maturation at important regulatory levels. Primary human fibroblasts from patients with IPF and healthy donors were treated with nintedanib (0.01-1.0 μM) or pirfenidone (100-1,000 μM) in the absence or presence of transforming growth factor-β1. Effects on collagen, fibronectin, FKBP10, and HSP47 expression, and collagen I and III secretion, were analyzed by quantitative polymerase chain reaction and Western blot. The appearance of collagen fibrils was monitored by scanning electron microscopy, and the kinetics of collagen fibril assembly was assessed using a light-scattering approach. In IPF fibroblasts, nintedanib reduced the expression of collagen I and V, fibronectin, and FKBP10 and attenuated the secretion of collagen I and III. Pirfenidone also down-regulated collagen V but otherwise showed fewer and less pronounced effects. By and large, the effects were similar in donor fibroblasts. For both drugs, electron microscopy of IPF fibroblast cultures revealed fewer and thinner collagen fibrils compared with untreated controls. Finally, both drugs dose-dependently delayed fibril formation of purified collagen I. In summary, both drugs act on important regulatory levels in collagen synthesis and processing. Nintedanib was more effective in down-regulating profibrotic gene expression and collagen secretion. Importantly, both drugs inhibited collagen I fibril formation and caused a reduction in and an altered appearance of collagen fibril bundles, representing a completely novel mechanism of action for both drugs.
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Affiliation(s)
| | - Yoshihiro Ishikawa
- 2 Department of Biochemistry and Molecular Biology, Oregon Health and Science University, Portland, Oregon.,3 Research Department, Shriners Hospital for Children, Portland, Oregon
| | - Michaela Aichler
- 4 Research Unit Analytical Pathology, Helmholtz-Zentrum München, Munich, Germany
| | | | - Rudolf Hatz
- 5 Thoraxchirurgisches Zentrum, Klinik für Allgemeine-, Viszeral-, Transplantations-, Gefäß- und Thoraxchirurgie, Klinikum Großhadern, and.,6 Asklepios Fachkliniken München-Gauting, Munich, Germany; and
| | - Jürgen Behr
- 7 Medizinische Klinik und Poliklinik V, Klinikum der Ludwig-Maximilians-Universität, Ludwig-Maximilians-Universität, Munich, Germany.,6 Asklepios Fachkliniken München-Gauting, Munich, Germany; and
| | - Axel Walch
- 4 Research Unit Analytical Pathology, Helmholtz-Zentrum München, Munich, Germany
| | - Hans Peter Bächinger
- 2 Department of Biochemistry and Molecular Biology, Oregon Health and Science University, Portland, Oregon.,3 Research Department, Shriners Hospital for Children, Portland, Oregon
| | - Oliver Eickelberg
- 1 Comprehensive Pneumology Center, and.,8 Pulmonary and Critical Care Medicine University, Colorado Anschutz Medical Campus, Denver, Colorado
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25
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Rodriguez Camargo DC, Tripsianes K, Buday K, Franko A, Göbl C, Hartlmüller C, Sarkar R, Aichler M, Mettenleiter G, Schulz M, Böddrich A, Erck C, Martens H, Walch AK, Madl T, Wanker EE, Conrad M, de Angelis MH, Reif B. The redox environment triggers conformational changes and aggregation of hIAPP in Type II Diabetes. Sci Rep 2017; 7:44041. [PMID: 28287098 PMCID: PMC5347123 DOI: 10.1038/srep44041] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 02/03/2017] [Indexed: 12/22/2022] Open
Abstract
Type II diabetes (T2D) is characterized by diminished insulin production and resistance of cells to insulin. Among others, endoplasmic reticulum (ER) stress is a principal factor contributing to T2D and induces a shift towards a more reducing cellular environment. At the same time, peripheral insulin resistance triggers the over-production of regulatory hormones such as insulin and human islet amyloid polypeptide (hIAPP). We show that the differential aggregation of reduced and oxidized hIAPP assists to maintain the redox equilibrium by restoring redox equivalents. Aggregation thus induces redox balancing which can assist initially to counteract ER stress. Failure of the protein degradation machinery might finally result in β-cell disruption and cell death. We further present a structural characterization of hIAPP in solution, demonstrating that the N-terminus of the oxidized peptide has a high propensity to form an α-helical structure which is lacking in the reduced state of hIAPP. In healthy cells, this residual structure prevents the conversion into amyloidogenic aggregates.
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Affiliation(s)
- Diana C Rodriguez Camargo
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany.,Munich Center for Integrated Protein Science (CIPS-M) at Department Chemie, Technische Universität München (TUM), Germany
| | - Konstantinos Tripsianes
- Central European Institute of Technology (CEITEC), Masaryk University, Kamenice 5, Brno 62500, Czech Republic
| | - Katalin Buday
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany
| | - Andras Franko
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany.,German Center for Diabetes Research (DZD e.V.), Neuherberg 85764, Germany
| | - Christoph Göbl
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany.,Munich Center for Integrated Protein Science (CIPS-M) at Department Chemie, Technische Universität München (TUM), Germany
| | - Christoph Hartlmüller
- Munich Center for Integrated Protein Science (CIPS-M) at Department Chemie, Technische Universität München (TUM), Germany
| | - Riddhiman Sarkar
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany.,Munich Center for Integrated Protein Science (CIPS-M) at Department Chemie, Technische Universität München (TUM), Germany
| | - Michaela Aichler
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany
| | | | - Michael Schulz
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany
| | - Annett Böddrich
- Max-Delbrück-Center Berlin (MDC), Robert-Rössle-Str. 10, Berlin 13125, Germany
| | - Christian Erck
- Synaptic Systems GmbH, Rudolf-Wissell-Straße 28, Göttingen, 37079, Germany
| | - Henrik Martens
- Synaptic Systems GmbH, Rudolf-Wissell-Straße 28, Göttingen, 37079, Germany
| | - Axel Karl Walch
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany
| | - Tobias Madl
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany.,Munich Center for Integrated Protein Science (CIPS-M) at Department Chemie, Technische Universität München (TUM), Germany.,Institute of Molecular Biology &Biochemistry, Center of Molecular Medicine, Medical University of Graz, Austria
| | - Erich E Wanker
- Max-Delbrück-Center Berlin (MDC), Robert-Rössle-Str. 10, Berlin 13125, Germany
| | - Marcus Conrad
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany
| | - Martin Hrabě de Angelis
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany.,German Center for Diabetes Research (DZD e.V.), Neuherberg 85764, Germany.,Technische Universität München, Center of Life and Food Sciences Weihenstephan, Freising 85354, Germany
| | - Bernd Reif
- Helmholtz Zentrum München, Ingolstädter Landstr. 1, Neuherberg 85764, Germany.,Munich Center for Integrated Protein Science (CIPS-M) at Department Chemie, Technische Universität München (TUM), Germany
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26
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Franko A, Neschen S, Rozman J, Rathkolb B, Aichler M, Feuchtinger A, Brachthäuser L, Neff F, Kovarova M, Wolf E, Fuchs H, Häring HU, Peter A, Hrabě de Angelis M. Bezafibrate ameliorates diabetes via reduced steatosis and improved hepatic insulin sensitivity in diabetic TallyHo mice. Mol Metab 2017; 6:256-266. [PMID: 28271032 PMCID: PMC5323884 DOI: 10.1016/j.molmet.2016.12.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 12/08/2016] [Accepted: 12/15/2016] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE Recently, we have shown that Bezafibrate (BEZ), the pan-PPAR (peroxisome proliferator-activated receptor) activator, ameliorated diabetes in insulin deficient streptozotocin treated diabetic mice. In order to study whether BEZ can also improve glucose metabolism in a mouse model for fatty liver and type 2 diabetes, the drug was applied to TallyHo mice. METHODS TallyHo mice were divided into an early (ED) and late (LD) diabetes progression group and both groups were treated with 0.5% BEZ (BEZ group) or standard diet (SD group) for 8 weeks. We analyzed plasma parameters, pancreatic beta-cell morphology, and mass as well as glucose metabolism of the BEZ-treated and control mice. Furthermore, liver fat content and composition as well as hepatic gluconeogenesis and mitochondrial mass were determined. RESULTS Plasma lipid and glucose levels were markedly reduced upon BEZ treatment, which was accompanied by elevated insulin sensitivity index as well as glucose tolerance, respectively. BEZ increased islet area in the pancreas. Furthermore, BEZ treatment improved energy expenditure and metabolic flexibility. In the liver, BEZ ameliorated steatosis, modified lipid composition and increased mitochondrial mass, which was accompanied by reduced hepatic gluconeogenesis. CONCLUSIONS Our data showed that BEZ ameliorates diabetes probably via reduced steatosis, enhanced hepatic mitochondrial mass, improved metabolic flexibility and elevated hepatic insulin sensitivity in TallyHo mice, suggesting that BEZ treatment could be beneficial for patients with NAFLD and impaired glucose metabolism.
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Key Words
- BEZ, Bezafibrate
- BG, blood glucose
- Bezafibrate
- ED, early onset of diabetes
- EM, electron microscopy
- FA, fatty acid
- Glucose metabolism
- HOMA-IR, homeostatic model assessment of insulin resistance
- Insulin resistance
- LD, late onset of diabetes
- Lipid metabolism
- NAFLD
- NAFLD, non-alcoholic fatty liver disease
- NEFA, non-esterified fatty acid
- PPAR, peroxisome proliferator-activated receptor
- RER, respiratory exchange ratios
- SD, standard diet
- T2D, type 2 diabetes
- TG, triglyceride
- qNMR, quantitative nuclear magnetic resonance
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Affiliation(s)
- Andras Franko
- Institute of Experimental Genetics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; Department of Internal Medicine IV, Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, University Hospital Tübingen, Otfried-Müller-Str. 10, 72076 Tübingen, Germany; German Center for Diabetes Research (DZD e.V.), Ingolstädter Landstraße 1, 85764 Neuherberg, Germany.
| | - Susanne Neschen
- Institute of Experimental Genetics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Jan Rozman
- Institute of Experimental Genetics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; German Center for Diabetes Research (DZD e.V.), Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Birgit Rathkolb
- Institute of Experimental Genetics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; German Center for Diabetes Research (DZD e.V.), Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians-Universität-München, Hackerstr. 27, 85764 Oberschleißheim, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Laura Brachthäuser
- Institute of Pathology, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Frauke Neff
- Institute of Pathology, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Marketa Kovarova
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, University Hospital Tübingen, Otfried-Müller-Str. 10, 72076 Tübingen, Germany
| | - Eckhard Wolf
- Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians-Universität-München, Hackerstr. 27, 85764 Oberschleißheim, Germany
| | - Helmut Fuchs
- Institute of Experimental Genetics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Hans-Ulrich Häring
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, University Hospital Tübingen, Otfried-Müller-Str. 10, 72076 Tübingen, Germany; German Center for Diabetes Research (DZD e.V.), Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Centre Munich at the University of Tübingen, Otfried-Müller-Str. 10, 72076 Tübingen, Germany
| | - Andreas Peter
- Department of Internal Medicine IV, Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, University Hospital Tübingen, Otfried-Müller-Str. 10, 72076 Tübingen, Germany; German Center for Diabetes Research (DZD e.V.), Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Centre Munich at the University of Tübingen, Otfried-Müller-Str. 10, 72076 Tübingen, Germany
| | - Martin Hrabě de Angelis
- Institute of Experimental Genetics, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; German Center for Diabetes Research (DZD e.V.), Ingolstädter Landstraße 1, 85764 Neuherberg, Germany; Center of Life and Food Sciences Weihenstephan, Technische Universität München, Alte Akademie 8, 85354 Freising, Germany.
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Abstract
Metabolomics is a rapidly evolving and a promising research field with the expectation to improve diagnosis, therapeutic treatment prediction, and prognosis of particular diseases. Among all techniques used to assess the metabolome in biological systems, mass spectrometry imaging is the method of choice to qualitatively and quantitatively analyze metabolite distribution in tissues with a high spatial resolution, thus providing molecular data in relation to cancer histopathology. The technique is ideally suited to study tissues molecular content and is able to provide molecular biomarkers or specific mass signatures which can be used in classification or the prognostic evaluation of tumors. Recently, it was shown that FFPE tissue samples are also suitable for metabolic analyses. This progress in methodology allows access to a highly valuable resource of tissues believed to widen and strengthen metabolic discovery-driven studies.
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Affiliation(s)
- A Buck
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - M Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - K Huber
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - A Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany.
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28
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Ma X, Phi Van V, Kimm MA, Prakash J, Kessler H, Kosanke K, Feuchtinger A, Aichler M, Gupta A, Rummeny EJ, Eisenblätter M, Siveke J, Walch AK, Braren R, Ntziachristos V, Wildgruber M. Integrin-Targeted Hybrid Fluorescence Molecular Tomography/X-ray Computed Tomography for Imaging Tumor Progression and Early Response in Non-Small Cell Lung Cancer. Neoplasia 2016; 19:8-16. [PMID: 27940248 PMCID: PMC5157790 DOI: 10.1016/j.neo.2016.11.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 11/14/2016] [Accepted: 11/14/2016] [Indexed: 11/05/2022] Open
Abstract
Integrins play an important role in tumor progression, invasion and metastasis. Therefore we aimed to evaluate a preclinical imaging approach applying ανβ3 integrin targeted hybrid Fluorescence Molecular Tomography/X-ray Computed Tomography (FMT-XCT) for monitoring tumor progression as well as early therapy response in a syngeneic murine Non-Small Cell Lung Cancer (NSCLC) model. Lewis Lung Carcinomas were grown orthotopically in C57BL/6 J mice and imaged in-vivo using a ανβ3 targeted near-infrared fluorescence (NIRF) probe. ανβ3-targeted FMT-XCT was able to track tumor progression. Cilengitide was able to substantially block the binding of the NIRF probe and suppress the imaging signal. Additionally mice were treated with an established chemotherapy regimen of Cisplatin and Bevacizumab or with a novel MEK inhibitor (Refametinib) for 2 weeks. While μCT revealed only a moderate slowdown of tumor growth, ανβ3 dependent signal decreased significantly compared to non-treated mice already at one week post treatment. ανβ3 targeted imaging might therefore become a promising tool for assessment of early therapy response in the future.
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Affiliation(s)
- Xiaopeng Ma
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Valerie Phi Van
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Melanie A Kimm
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Jaya Prakash
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Horst Kessler
- Chemistry Department and TUM Institute for Advanced Study, Lichtenbergstrasse 2a, D-85748, Garching, Germany
| | - Katja Kosanke
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Aayush Gupta
- Department of Internal Medicine II, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Ernst J Rummeny
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Michel Eisenblätter
- Department of Clinical Radiology, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, D-48149, Münster, Germany
| | - Jens Siveke
- Department of Internal Medicine II, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany; German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, D-69120, Heidelberg, Germany; Division of Solid Tumor Translational Oncology, German Cancer Consortium (DKTK), partner site Essen, University Hospital Essen, Hufelandstraße 55, D-45147 Essen, Germany
| | - Axel K Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Rickmer Braren
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany
| | - Vasilis Ntziachristos
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, D-85764 Oberschleissheim, Germany
| | - Moritz Wildgruber
- Department of Radiology, Klinikum Rechts der Isar, Technische Universität München, Ismaningerstrasse 22, D-81675, München, Germany; Department of Clinical Radiology, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, D-48149, Münster, Germany.
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29
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Schenck TL, Lin S, Stewart JK, Koban KC, Aichler M, Rezaeian F, Giunta RE. Sensory reanimation of the hand by transfer of the superficial branch of the radial nerve to the median and ulnar nerve. Brain Behav 2016; 6:e00578. [PMID: 28032001 PMCID: PMC5166995 DOI: 10.1002/brb3.578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 07/17/2016] [Accepted: 08/10/2016] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND It remains a surgical challenge to treat high-grade nerve injuries of the upper extremity. Extra-anatomic reconstructions through the transfer of peripheral nerves have gained clinical importance over the past decades. This contribution outlines the anatomic and histomorphometric basis for the transfer of the superficial branch of the radial nerve (SBRN) to the median nerve (MN) and the superficial branch of the ulnar nerve (SBUN). METHODS The SBRN, MN, and SBUN were identified in 15 specimens and the nerve transfer performed. A favorable site for coaptation was chosen and its location described using relevant anatomical landmarks. Histomorphometric characteristics of donor and target were compared to evaluate the chances of a clinical success. RESULTS A suitable location for dissecting the SBRN was identified prior to its first bifurcation. Coaptations were possible near the pronator quadratus muscle, approximately 22 cm distal to the lateral epicondyle of the humerus. The MN and SBUN had to be dissected interfasciculary over 82 ± 5.7 mm and 49 ± 5.5 mm, respectively. Histomorphometric analysis revealed sufficient donor-to-recipient axon ratios for both transfers and identified the SBRN as a suitable donor with high axon density. CONCLUSION Our anatomic and histomorphometric results indicate that the SBRN is a suitable donor for the MN and SBUN at wrist level. The measurements show feasibility of this procedure and shall help in planning this sensory nerve transfer. High axon density in the SBRN identifies it or its branches an ideal candidate for sensory reanimation of fingers and thumbs.
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Affiliation(s)
- Thilo L Schenck
- Hand Surgery, Plastic Surgery and Aesthetic Surgery Ludwig-Maximilians-University Munich Munich Germany
| | - Shenyu Lin
- Hand Surgery, Plastic Surgery and Aesthetic Surgery Ludwig-Maximilians-University Munich Munich Germany
| | - Jessica K Stewart
- Department of Obstetrics and Gynecology University Hospital rechts der Isar Technical University Munich Munich Germany
| | - Konstantin C Koban
- Hand Surgery, Plastic Surgery and Aesthetic Surgery Ludwig-Maximilians-University Munich Munich Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology Helmholtzzentrum München German Research Center for Environmental Health Munich Germany
| | - Farid Rezaeian
- Department of Plastic Surgery and Hand Surgery University Hospital Zurich Zurich Switzerland
| | - Riccardo E Giunta
- Hand Surgery, Plastic Surgery and Aesthetic Surgery Ludwig-Maximilians-University Munich Munich Germany
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30
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Luber B, Keller S, Zwingenberger G, Ebert K, Maier D, Geier B, Theis F, Hasenauer J, Hug S, Meyer-Hermann M, Dehghany J, Walch A, Aichler M, Lordick F, Haffner I. Identification of predictive response and resistance factors to targeted therapy in gastric cancer using a systems medicine approach. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)33002-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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Koch M, de Jong JS, Glatz J, Symvoulidis P, Lamberts LE, Adams ALL, Kranendonk MEG, Terwisscha van Scheltinga AGT, Aichler M, Jansen L, de Vries J, Lub-de Hooge MN, Schröder CP, Jorritsma-Smit A, Linssen MD, de Boer E, van der Vegt B, Nagengast WB, Elias SG, Oliveira S, Witkamp AJ, Mali WPTM, Van der Wall E, Garcia-Allende PB, van Diest PJ, de Vries EGE, Walch A, van Dam GM, Ntziachristos V. Threshold Analysis and Biodistribution of Fluorescently Labeled Bevacizumab in Human Breast Cancer. Cancer Res 2016; 77:623-631. [PMID: 27879266 DOI: 10.1158/0008-5472.can-16-1773] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 10/06/2016] [Accepted: 10/24/2016] [Indexed: 11/16/2022]
Abstract
In vivo tumor labeling with fluorescent agents may assist endoscopic and surgical guidance for cancer therapy as well as create opportunities to directly observe cancer biology in patients. However, malignant and nonmalignant tissues are usually distinguished on fluorescence images by applying empirically determined fluorescence intensity thresholds. Here, we report the development of fSTREAM, a set of analytic methods designed to streamline the analysis of surgically excised breast tissues by collecting and statistically processing hybrid multiscale fluorescence, color, and histology readouts toward precision fluorescence imaging. fSTREAM addresses core questions of how to relate fluorescence intensity to tumor tissue and how to quantitatively assign a normalized threshold that sufficiently differentiates tumor tissue from healthy tissue. Using fSTREAM we assessed human breast tumors stained in vivo with fluorescent bevacizumab at microdose levels. Showing that detection of such levels is achievable, we validated fSTREAM for high-resolution mapping of the spatial pattern of labeled antibody and its relation to the underlying cancer pathophysiology and tumor border on a per patient basis. We demonstrated a 98% sensitivity and 79% specificity when using labeled bevacizumab to outline the tumor mass. Overall, our results illustrate a quantitative approach to relate fluorescence signals to malignant tissues and improve the theranostic application of fluorescence molecular imaging. Cancer Res; 77(3); 623-31. ©2016 AACR.
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Affiliation(s)
- Maximilian Koch
- Chair for Biological Imaging, Technical University of Munich, München, Germany.,Institute for Biological and Medical Imaging, Helmholtz Zentrum München, München, Germany
| | - Johannes S de Jong
- Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Jürgen Glatz
- Chair for Biological Imaging, Technical University of Munich, München, Germany.,Institute for Biological and Medical Imaging, Helmholtz Zentrum München, München, Germany
| | - Panagiotis Symvoulidis
- Chair for Biological Imaging, Technical University of Munich, München, Germany.,Institute for Biological and Medical Imaging, Helmholtz Zentrum München, München, Germany
| | - Laetitia E Lamberts
- Department of Medical Oncology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Arthur L L Adams
- Department of Radiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | | | - Anton G T Terwisscha van Scheltinga
- Department of Medical Oncology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Hospital and Clinical Pharmacy, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, München, Germany
| | - Liesbeth Jansen
- Department of Surgery, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Jakob de Vries
- Department of Surgery, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Marjolijn N Lub-de Hooge
- Hospital and Clinical Pharmacy, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Carolien P Schröder
- Department of Medical Oncology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Annelies Jorritsma-Smit
- Hospital and Clinical Pharmacy, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Matthijs D Linssen
- Hospital and Clinical Pharmacy, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Esther de Boer
- Department of Surgery, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Bert van der Vegt
- Department of Pathology, University of Groningen, University Medical Center Groningen, the Netherlands
| | - Wouter B Nagengast
- Department of Gastroenterology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Sjoerd G Elias
- Julius Center for Health Sciences and Primary Care, Cell Biology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Sabrina Oliveira
- Department of Biology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Arjen J Witkamp
- Department of Surgery, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Willem P T M Mali
- Department of Radiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Elsken Van der Wall
- Department of Medical Oncology, Utrecht University, University Medical Center Utrecht, Utrecht, the Netherlands
| | - P Beatriz Garcia-Allende
- Chair for Biological Imaging, Technical University of Munich, München, Germany.,Institute for Biological and Medical Imaging, Helmholtz Zentrum München, München, Germany
| | - Paul J van Diest
- Department of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Elisabeth G E de Vries
- Department of Medical Oncology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, München, Germany
| | - Gooitzen M van Dam
- Department of Surgery, University of Groningen, University Medical Center Groningen, the Netherlands.,Department of Nuclear Medicine and Molecular Imaging and Intensive Care, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Vasilis Ntziachristos
- Chair for Biological Imaging, Technical University of Munich, München, Germany. .,Institute for Biological and Medical Imaging, Helmholtz Zentrum München, München, Germany
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32
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Doll S, Proneth B, Tyurina YY, Panzilius E, Kobayashi S, Ingold I, Irmler M, Beckers J, Aichler M, Walch A, Prokisch H, Trümbach D, Mao G, Qu F, Bayir H, Füllekrug J, Scheel CH, Wurst W, Schick JA, Kagan VE, Angeli JPF, Conrad M. ACSL4 dictates ferroptosis sensitivity by shaping cellular lipid composition. Nat Chem Biol 2016; 13:91-98. [PMID: 27842070 DOI: 10.1038/nchembio.2239] [Citation(s) in RCA: 1883] [Impact Index Per Article: 235.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 09/13/2016] [Indexed: 02/07/2023]
Abstract
Ferroptosis is a form of regulated necrotic cell death controlled by glutathione peroxidase 4 (GPX4). At present, mechanisms that could predict sensitivity and/or resistance and that may be exploited to modulate ferroptosis are needed. We applied two independent approaches-a genome-wide CRISPR-based genetic screen and microarray analysis of ferroptosis-resistant cell lines-to uncover acyl-CoA synthetase long-chain family member 4 (ACSL4) as an essential component for ferroptosis execution. Specifically, Gpx4-Acsl4 double-knockout cells showed marked resistance to ferroptosis. Mechanistically, ACSL4 enriched cellular membranes with long polyunsaturated ω6 fatty acids. Moreover, ACSL4 was preferentially expressed in a panel of basal-like breast cancer cell lines and predicted their sensitivity to ferroptosis. Pharmacological targeting of ACSL4 with thiazolidinediones, a class of antidiabetic compound, ameliorated tissue demise in a mouse model of ferroptosis, suggesting that ACSL4 inhibition is a viable therapeutic approach to preventing ferroptosis-related diseases.
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Affiliation(s)
- Sebastian Doll
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Bettina Proneth
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Yulia Y Tyurina
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Elena Panzilius
- Institute of Stem Cell Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Sho Kobayashi
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Irina Ingold
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Martin Irmler
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Johannes Beckers
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Michaela Aichler
- Institute of Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Axel Walch
- Institute of Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Holger Prokisch
- Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany.,Technische Universität München, Institute of Human Genetics, München, Germany
| | - Dietrich Trümbach
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Gaowei Mao
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Feng Qu
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Hulya Bayir
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Joachim Füllekrug
- Department of Gastroenterology, University of Heidelberg, Heidelberg, Germany
| | - Christina H Scheel
- Institute of Stem Cell Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Wolfgang Wurst
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Joel A Schick
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Valerian E Kagan
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - Marcus Conrad
- Institute of Developmental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
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33
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Wittmann A, Grimm MOW, Scherthan H, Horsch M, Beckers J, Fuchs H, Gailus-Durner V, Hrabě de Angelis M, Ford SJ, Burton NC, Razansky D, Trümbach D, Aichler M, Walch AK, Calzada-Wack J, Neff F, Wurst W, Hartmann T, Floss T. Sphingomyelin Synthase 1 Is Essential for Male Fertility in Mice. PLoS One 2016; 11:e0164298. [PMID: 27788151 PMCID: PMC5082796 DOI: 10.1371/journal.pone.0164298] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 09/22/2016] [Indexed: 11/18/2022] Open
Abstract
Sphingolipids and the derived gangliosides have critical functions in spermatogenesis, thus mutations in genes involved in sphingolipid biogenesis are often associated with male infertility. We have generated a transgenic mouse line carrying an insertion in the sphingomyelin synthase gene Sms1, the enzyme which generates sphingomyelin species in the Golgi apparatus. We describe the spermatogenesis defect of Sms1-/- mice, which is characterized by sloughing of spermatocytes and spermatids, causing progressive infertility of male homozygotes. Lipid profiling revealed a reduction in several long chain unsaturated phosphatidylcholins, lysophosphatidylcholins and sphingolipids in the testes of mutants. Multi-Spectral Optoacoustic Tomography indicated blood-testis barrier dysfunction. A supplementary diet of the essential omega-3 docosahexaenoic acid and eicosapentaenoic acid diminished germ cell sloughing from the seminiferous epithelium and restored spermatogenesis and fertility in 50% of previously infertile mutants. Our findings indicate that SMS1 has a wider than anticipated role in testis polyunsaturated fatty acid homeostasis and for male fertility.
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Affiliation(s)
- Anke Wittmann
- Helmholtz Zentrum München, Institute of Developmental Genetics, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Marcus O. W. Grimm
- Saarland University, Experimentelle Neurologie, 66424 Homburg/Saar; Germany
| | - Harry Scherthan
- Institut für Radiobiologie der Bundeswehr in Verb. mit der Univ. Ulm, 80937 Munich, Germany
| | - Marion Horsch
- Helmholtz Zentrum München, German Mouse Clinic, Institute of Experimental Genetics, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Johannes Beckers
- Helmholtz Zentrum München, German Mouse Clinic, Institute of Experimental Genetics, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
- Technische Universität München, Co Helmholtz-Zentrum München
| | - Helmut Fuchs
- Helmholtz Zentrum München, German Mouse Clinic, Institute of Experimental Genetics, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Valerie Gailus-Durner
- Helmholtz Zentrum München, German Mouse Clinic, Institute of Experimental Genetics, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Martin Hrabě de Angelis
- Helmholtz Zentrum München, German Mouse Clinic, Institute of Experimental Genetics, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
- Technische Universität München, Co Helmholtz-Zentrum München
| | - Steven J. Ford
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München and Technische Universität München, 85764 Neuherberg, Germany
| | - Neal C. Burton
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München and Technische Universität München, 85764 Neuherberg, Germany
| | - Daniel Razansky
- Institute for Biological and Medical Imaging, Helmholtz Zentrum München and Technische Universität München, 85764 Neuherberg, Germany
| | - Dietrich Trümbach
- Helmholtz Zentrum München, Institute of Developmental Genetics, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Michaela Aichler
- Helmholtz Zentrum München, Research Unit Analytical Pathology, Institute of Pathology, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Axel Karl Walch
- Helmholtz Zentrum München, Research Unit Analytical Pathology, Institute of Pathology, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Julia Calzada-Wack
- Helmholtz Zentrum München, German Mouse Clinic, Institute of Pathology, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Frauke Neff
- Helmholtz Zentrum München, German Mouse Clinic, Institute of Pathology, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
| | - Wolfgang Wurst
- Helmholtz Zentrum München, Institute of Developmental Genetics, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
- Technische Universität München, Co Helmholtz-Zentrum München
- Deutsches Zentrum für Neurodegenerative Erkrankungen e.V. (DZNE), Site Munich, Schillerstrasse 44, 80336 München, Germany
- Max-Planck-Institute of Psychiatry, Kraepelinstr. 2–10, 80804 München, Germany
| | - Tobias Hartmann
- Saarland University, Experimentelle Neurologie, 66424 Homburg/Saar; Germany
| | - Thomas Floss
- Helmholtz Zentrum München, Institute of Developmental Genetics, Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany
- Technische Universität München, Co Helmholtz-Zentrum München
- * E-mail:
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34
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Franko A, Huypens P, Neschen S, Irmler M, Rozman J, Rathkolb B, Neff F, Prehn C, Dubois G, Baumann M, Massinger R, Gradinger D, Przemeck GKH, Repp B, Aichler M, Feuchtinger A, Schommers P, Stöhr O, Sanchez-Lasheras C, Adamski J, Peter A, Prokisch H, Beckers J, Walch AK, Fuchs H, Wolf E, Schubert M, Wiesner RJ, Hrabě de Angelis M. Bezafibrate Improves Insulin Sensitivity and Metabolic Flexibility in STZ-Induced Diabetic Mice. Diabetes 2016; 65:2540-52. [PMID: 27284107 DOI: 10.2337/db15-1670] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 05/25/2016] [Indexed: 11/13/2022]
Abstract
Bezafibrate (BEZ), a pan activator of peroxisome proliferator-activated receptors (PPARs), has been generally used to treat hyperlipidemia for decades. Clinical trials with type 2 diabetes patients indicated that BEZ also has beneficial effects on glucose metabolism, although the underlying mechanisms of these effects remain elusive. Even less is known about a potential role for BEZ in treating type 1 diabetes. Here we show that BEZ markedly improves hyperglycemia and glucose and insulin tolerance in mice with streptozotocin (STZ)-induced diabetes, an insulin-deficient mouse model of type 1 diabetes. BEZ treatment of STZ mice significantly suppressed the hepatic expression of genes that are annotated in inflammatory processes, whereas the expression of PPAR and insulin target gene transcripts was increased. Furthermore, BEZ-treated mice also exhibited improved metabolic flexibility as well as an enhanced mitochondrial mass and function in the liver. Finally, we show that the number of pancreatic islets and the area of insulin-positive cells tended to be higher in BEZ-treated mice. Our data suggest that BEZ may improve impaired glucose metabolism by augmenting hepatic mitochondrial performance, suppressing hepatic inflammatory pathways, and improving insulin sensitivity and metabolic flexibility. Thus, BEZ treatment might also be useful for patients with impaired glucose tolerance or diabetes.
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Affiliation(s)
- Andras Franko
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine, University Hospital Tübingen, Tübingen, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Peter Huypens
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Susanne Neschen
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany
| | - Martin Irmler
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Jan Rozman
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany
| | - Birgit Rathkolb
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians-Universität-München, Munich, Germany
| | - Frauke Neff
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany Institute of Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Cornelia Prehn
- Genome Analysis Center, Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Guillaume Dubois
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Martina Baumann
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Rebecca Massinger
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Daniel Gradinger
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Gerhard K H Przemeck
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Birgit Repp
- Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Philipp Schommers
- Institute of Vegetative Physiology, University of Köln, Cologne, Germany Department I of Internal Medicine, University Hospital Cologne, Cologne, Germany
| | - Oliver Stöhr
- Center for Endocrinology, Diabetes and Preventive Medicine, University of Köln, Cologne, Germany
| | | | - Jerzy Adamski
- German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany Genome Analysis Center, Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany Lehrstuhl für Experimentelle Genetik, Technische Universität München, Freising-Weihenstephan, Germany
| | - Andreas Peter
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine, University Hospital Tübingen, Tübingen, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Zentrum München at the University of Tübingen, Tübingen, Germany
| | - Holger Prokisch
- Institute of Human Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Johannes Beckers
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany Center of Life and Food Sciences Weihenstephan, Technische Universität München, Freising, Germany
| | - Axel K Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Helmut Fuchs
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany
| | - Eckhard Wolf
- Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians-Universität-München, Munich, Germany
| | - Markus Schubert
- Center for Endocrinology, Diabetes and Preventive Medicine, University of Köln, Cologne, Germany Internal Medicine, SCIVIAS Hospital St. Josef, Rüdesheim am Rhein, Germany
| | - Rudolf J Wiesner
- Institute of Vegetative Physiology, University of Köln, Cologne, Germany Center for Molecular Medicine Cologne (CMMC), University of Köln, Cologne, Germany Cologne Excellence Cluster on Cellular Stress Responses in Ageing-associated Diseases (CECAD), University of Köln, Cologne, Germany
| | - Martin Hrabě de Angelis
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany German Mouse Clinic, Helmholtz Zentrum München, Neuherberg, Germany Center of Life and Food Sciences Weihenstephan, Technische Universität München, Freising, Germany
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Mendler CT, Feuchtinger A, Heid I, Aichler M, D'Alessandria C, Pirsig S, Blechert B, Wester HJ, Braren R, Walch A, Skerra A, Schwaiger M. Tumor Uptake of Anti-CD20 Fabs Depends on Tumor Perfusion. J Nucl Med 2016; 57:1971-1977. [PMID: 27417649 DOI: 10.2967/jnumed.116.176784] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 06/21/2016] [Indexed: 12/22/2022] Open
Abstract
Antibodies have become an established treatment modality in cancer therapy during the last decade. However, these treatments often suffer from an insufficient and heterogeneous response despite validated antigen or target receptor expression in the tumor. In fact, therapeutic success depends on both the presence of the tumor antigen and its accessibility by the antibody. In search of a suitable preclinical animal model to evaluate the mechanisms of tumor heterogeneity and hemodynamics, we characterized two exemplary non-Hodgkin lymphoma subtypes with comparable CD20 expression and metabolism, SUDHL-4 and Granta-519, using multimodal imaging techniques. METHODS To investigate in vivo biodistribution, two differently modified αCD20 antigen-binding fragments (Fab), prepared by PASylation with a 200-residue polypeptide tag comprising Pro, Ala, and Ser (PAS200) and by fusion with an albumin-binding domain (ABD), were radiolabeled with 125I and intravenously injected into immunocompromised mice bearing corresponding xenografts. RESULTS Validation with 18F-FDG revealed a similar distribution in vital tumor tissue 1 h after injection. However, large differences in tumor uptake were observed when the CD20-specific radiotracers 125I-Fab-ABD and 125I-Fab-PAS200 were applied (respective percentages injected dose per gram at 24 h after injection: 12.3 and 2.4 for Granta-519 vs. 5.8 and 1.2 for SUDHL-4). Three-dimensional light-sheet fluorescence microscopy with Cy5-Fab-PAS200 confirmed better tracer extravasation in the Granta-519 tumors. Moreover, dynamic contrast-enhanced (DCE) MRI revealed significantly reduced perfusion in the SUDHL-4 tumors. CONCLUSION Tracer uptake was highly dependent on local tumor perfusion and Fab permeation in the SUDHL-4 and Granta-519 tumors. Thus, the SUDHL-4 xenograft offers an excellent model for investigating the influence of therapies affecting tumor angiogenesis.
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Affiliation(s)
- Claudia Theresa Mendler
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, München, Germany .,Munich Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für Biologische Chemie, Technische Universität München, Freising (Weihenstephan), Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Institute of Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Irina Heid
- Institute of Radiology, Klinikum rechts der Isar, Technische Universität München, München, Germany; and
| | - Michaela Aichler
- Research Unit Analytical Pathology, Institute of Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Calogero D'Alessandria
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - Sabine Pirsig
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - Birgit Blechert
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | - Hans-Jürgen Wester
- Pharmaceutical Radiochemistry, Technische Universität München, Garching, Germany
| | - Rickmer Braren
- Institute of Radiology, Klinikum rechts der Isar, Technische Universität München, München, Germany; and
| | - Axel Walch
- Research Unit Analytical Pathology, Institute of Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Arne Skerra
- Munich Center for Integrated Protein Science (CIPS-M) and Lehrstuhl für Biologische Chemie, Technische Universität München, Freising (Weihenstephan), Germany
| | - Markus Schwaiger
- Nuklearmedizinische Klinik und Poliklinik, Klinikum rechts der Isar, Technische Universität München, München, Germany
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Ly A, Buck A, Balluff B, Sun N, Gorzolka K, Feuchtinger A, Janssen KP, Kuppen PJK, van de Velde CJH, Weirich G, Erlmeier F, Langer R, Aubele M, Zitzelsberger H, McDonnell L, Aichler M, Walch A. High-mass-resolution MALDI mass spectrometry imaging of metabolites from formalin-fixed paraffin-embedded tissue. Nat Protoc 2016; 11:1428-43. [PMID: 27414759 DOI: 10.1038/nprot.2016.081] [Citation(s) in RCA: 154] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Formalin-fixed and paraffin-embedded (FFPE) tissue specimens are the gold standard for histological examination, and they provide valuable molecular information in tissue-based research. Metabolite assessment from archived tissue samples has not been extensively conducted because of a lack of appropriate protocols and concerns about changes in metabolite content or chemical state due to tissue processing. We present a protocol for the in situ analysis of metabolite content from FFPE samples using a high-mass-resolution matrix-assisted laser desorption/ionization fourier-transform ion cyclotron resonance mass spectrometry imaging (MALDI-FT-ICR-MSI) platform. The method involves FFPE tissue sections that undergo deparaffinization and matrix coating by 9-aminoacridine before MALDI-MSI. Using this platform, we previously detected ∼1,500 m/z species in the mass range m/z 50-1,000 in FFPE samples; the overlap compared with fresh frozen samples is 72% of m/z species, indicating that metabolites are largely conserved in FFPE tissue samples. This protocol can be reproducibly performed on FFPE tissues, including small samples such as tissue microarrays and biopsies. The procedure can be completed in a day, depending on the size of the sample measured and raster size used. Advantages of this approach include easy sample handling, reproducibility, high throughput and the ability to demonstrate molecular spatial distributions in situ. The data acquired with this protocol can be used in research and clinical practice.
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Affiliation(s)
- Alice Ly
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Achim Buck
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Benjamin Balluff
- Maastricht MultiModal Molecular Imaging Institute (M4I), Maastricht University, Maastricht, the Netherlands
| | - Na Sun
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Karin Gorzolka
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Klaus-Peter Janssen
- Department of Surgery, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany
| | - Peter J K Kuppen
- Department of Surgery, Leiden University Medical Center, Leiden, the Netherlands
| | | | - Gregor Weirich
- Institute of Pathology, Technische Universität München, Munich, Germany
| | | | - Rupert Langer
- Institute of Pathology, Technische Universität München, Munich, Germany
| | - Michaela Aubele
- Institute of Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Horst Zitzelsberger
- Research Unit Radiation Cytogenetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Liam McDonnell
- Centre for Proteomics and Metabolomics, Leiden University Medical Centre, Leiden, the Netherlands.,Fondazione Pisana per la Scienza ONLUS, Pisa, Italy
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Neuherberg, Germany
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Mall S, Yusufi N, Wagner R, Klar R, Bianchi H, Steiger K, Straub M, Audehm S, Laitinen I, Aichler M, Peschel C, Ziegler S, Mustafa M, Schwaiger M, D'Alessandria C, Krackhardt AM. Immuno-PET Imaging of Engineered Human T Cells in Tumors. Cancer Res 2016; 76:4113-23. [PMID: 27354381 DOI: 10.1158/0008-5472.can-15-2784] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2015] [Accepted: 03/13/2016] [Indexed: 11/16/2022]
Abstract
Sensitive in vivo imaging technologies applicable to the clinical setting are still lacking for adoptive T-cell-based immunotherapies, an important gap to fill if mechanisms of tumor rejection or escape are to be understood. Here, we propose a highly sensitive imaging technology to track human TCR-transgenic T cells in vivo by directly targeting the murinized constant TCR beta domain (TCRmu) with a zirconium-89 ((89)Zr)-labeled anti-TCRmu-F(ab')2 fragment. Binding of the labeled or unlabeled F(ab')2 fragment did not impair functionality of transgenic T cells in vitro and in vivo Using a murine xenograft model of human myeloid sarcoma, we monitored by Immuno-PET imaging human central memory T cells (TCM), which were transgenic for a myeloid peroxidase (MPO)-specific TCR. Diverse T-cell distribution patterns were detected by PET/CT imaging, depending on the tumor size and rejection phase. Results were confirmed by IHC and semiquantitative evaluation of T-cell infiltration within the tumor corresponding to the PET/CT images. Overall, these findings offer a preclinical proof of concept for an imaging approach that is readily tractable for clinical translation. Cancer Res; 76(14); 4113-23. ©2016 AACR.
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Affiliation(s)
- Sabine Mall
- Medizinische Klinik III, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Nahid Yusufi
- Nuklearmedizinische Klinik und Poliklinik, Technische Universität München, Munich, Germany
| | - Ricarda Wagner
- Medizinische Klinik III, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Richard Klar
- Medizinische Klinik III, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Henrique Bianchi
- Medizinische Klinik III, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Katja Steiger
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Munich, Germany
| | - Melanie Straub
- Institut für Allgemeine Pathologie und Pathologische Anatomie, Technische Universität München, Munich, Germany
| | - Stefan Audehm
- Medizinische Klinik III, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - Iina Laitinen
- Nuklearmedizinische Klinik und Poliklinik, Technische Universität München, Munich, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Munich, Germany
| | - Christian Peschel
- Medizinische Klinik III, Klinikum rechts der Isar, Technische Universität München, Munich, Germany. German Cancer Consortium (DKTK), Munich, Germany
| | - Sibylle Ziegler
- Nuklearmedizinische Klinik und Poliklinik, Technische Universität München, Munich, Germany
| | - Mona Mustafa
- Nuklearmedizinische Klinik und Poliklinik, Technische Universität München, Munich, Germany
| | - Markus Schwaiger
- Nuklearmedizinische Klinik und Poliklinik, Technische Universität München, Munich, Germany. German Cancer Consortium (DKTK), Munich, Germany
| | - Calogero D'Alessandria
- Nuklearmedizinische Klinik und Poliklinik, Technische Universität München, Munich, Germany
| | - Angela M Krackhardt
- Medizinische Klinik III, Klinikum rechts der Isar, Technische Universität München, Munich, Germany. German Cancer Consortium (DKTK), Munich, Germany. Clinical Cooperation Group Antigen Specific T-Cell Therapy, Helmholtz Zentrum München, Munich, Germany.
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Buck A, Balluff B, Voss A, Langer R, Zitzelsberger H, Aichler M, Walch A. How Suitable is Matrix-Assisted Laser Desorption/Ionization-Time-of-Flight for Metabolite Imaging from Clinical Formalin-Fixed and Paraffin-Embedded Tissue Samples in Comparison to Matrix-Assisted Laser Desorption/Ionization-Fourier Transform Ion Cyclotron Resonance Mass Spectrometry? Anal Chem 2016; 88:5281-9. [DOI: 10.1021/acs.analchem.6b00460] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Achim Buck
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Benjamin Balluff
- Maastricht MultiModal Molecular Imaging Institute (M4I), Maastricht University, 6200 MD, Maastricht, The Netherlands
| | - Andreas Voss
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Rupert Langer
- Institute of Pathology, University of Bern, 3012, Bern, Switzerland
| | - Horst Zitzelsberger
- Research Unit Radiation
Cytogenetics, Helmholtz Zentrum München, 85764, Neuherberg, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
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Hachmöller O, Aichler M, Schwamborn K, Lutz L, Werner M, Sperling M, Walch A, Karst U. Element bioimaging of liver needle biopsy specimens from patients with Wilson's disease by laser ablation-inductively coupled plasma-mass spectrometry. J Trace Elem Med Biol 2016; 35:97-102. [PMID: 27049132 DOI: 10.1016/j.jtemb.2016.02.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Revised: 02/03/2016] [Accepted: 02/08/2016] [Indexed: 12/31/2022]
Abstract
A laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) method is developed and applied for the analysis of paraffin-embedded liver needle biopsy specimens of patients with Wilson's disease (WD), a rare autosomal recessive disorder of the copper metabolism causing various hepatic, neurological and psychiatric symptoms due to a copper accumulation in the liver and the central nervous system. The sample set includes two WD liver samples and one negative control sample. The imaging analysis was performed with a spatial resolution of 10 μm. Besides copper, iron was monitored because an elevated iron concentration in the liver is known for WD. In addition to this, both elements were quantified using an external calibration based on matrix-matched gelatine standards. The presented method offers low limits of detection of 1 and 5 μg/g for copper and iron, respectively. The high detection power and good spatial resolution allow the analysis of small needle biopsy specimen using this method. The two analyzed WD samples can be well differentiated from the control sample due to their inhomogeneous copper distribution and high copper concentrations of up to 1200 μg/g. Interestingly, the WD samples show an inverse correlation of regions with elevated copper concentrations and regions with high iron concentrations.
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Affiliation(s)
- Oliver Hachmöller
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149 Münster, Germany
| | - Michaela Aichler
- Helmholtz Zentrum München, Institut für Pathologie - Abteilung Analytische Pathologie, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Kristina Schwamborn
- Technische Universität München, Institut für Allgemeine Pathologie und Pathologische Anatomie, Trogerstraße 18, 81675 München, Germany
| | - Lisa Lutz
- Universitätsklinikum Freiburg, Institut für Klinische Pathologie, Breisacher Straße 115a, 79106 Freiburg, Germany
| | - Martin Werner
- Universitätsklinikum Freiburg, Institut für Klinische Pathologie, Breisacher Straße 115a, 79106 Freiburg, Germany
| | - Michael Sperling
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149 Münster, Germany; European Virtual Institute for Speciation Analysis (EVISA), Mendelstraße 11, 48149 Münster, Germany
| | - Axel Walch
- Helmholtz Zentrum München, Institut für Pathologie - Abteilung Analytische Pathologie, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Uwe Karst
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 30, 48149 Münster, Germany.
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Girst S, Greubel C, Reindl J, Siebenwirth C, Zlobinskaya O, Walsh DW, Ilicic K, Aichler M, Walch A, Wilkens JJ, Multhoff G, Dollinger G, Schmid TE. Proton Minibeam Radiation Therapy Reduces Side Effects in an In Vivo Mouse Ear Model. Int J Radiat Oncol Biol Phys 2016; 95:234-241. [DOI: 10.1016/j.ijrobp.2015.10.020] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 09/07/2015] [Accepted: 10/08/2015] [Indexed: 11/27/2022]
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Lohöfer F, Glinzer A, Hoffmann L, Kosanke K, Schilling F, Huber K, Aichler M, Walch A, Rummeny E, Wildgruber M. Molekulare Bildgebung der Atherosklerose mit dem MRT-Kontrastmittel Gadofluorine P und T1-Mapping. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lohöfer F, Hoffmann L, Glinzer A, Kosanke K, Schilling F, Huber K, Aichler M, Walch A, Rummeny E, Wildgruber M. Myokardiale MRT-Infarktbildgebung im Mausmodell mittels T1-Mapping bei 7 Tesla mit dem Kontrastmittel Gadofluorine P sowie ex-vivo-Validierung mittels MALDI-IMS. ROFO-FORTSCHR RONTG 2016. [DOI: 10.1055/s-0036-1581195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Grüner BM, Winkelmann I, Feuchtinger A, Sun N, Balluff B, Teichmann N, Herner A, Kalideris E, Steiger K, Braren R, Aichler M, Esposito I, Schmid RM, Walch A, Siveke JT. Modeling Therapy Response and Spatial Tissue Distribution of Erlotinib in Pancreatic Cancer. Mol Cancer Ther 2016; 15:1145-52. [DOI: 10.1158/1535-7163.mct-15-0165] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Accepted: 12/06/2015] [Indexed: 11/16/2022]
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Hachmöller O, Buzanich AG, Aichler M, Radtke M, Dietrich D, Schwamborn K, Lutz L, Werner M, Sperling M, Walch A, Karst U. Elemental bioimaging and speciation analysis for the investigation of Wilson's disease using μXRF and XANES. Metallomics 2016; 8:648-53. [DOI: 10.1039/c6mt00001k] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Pfluger PT, Kabra DG, Aichler M, Schriever SC, Pfuhlmann K, García VC, Lehti M, Weber J, Kutschke M, Rozman J, Elrod JW, Hevener AL, Feuchtinger A, Hrabě de Angelis M, Walch A, Rollmann SM, Aronow BJ, Müller TD, Perez-Tilve D, Jastroch M, De Luca M, Molkentin JD, Tschöp MH. Calcineurin Links Mitochondrial Elongation with Energy Metabolism. Cell Metab 2015; 22:838-50. [PMID: 26411342 DOI: 10.1016/j.cmet.2015.08.022] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 05/13/2015] [Accepted: 08/25/2015] [Indexed: 01/09/2023]
Abstract
Canonical protein phosphatase 3/calcineurin signaling is central to numerous physiological processes. Here we provide evidence that calcineurin plays a pivotal role in controlling systemic energy and body weight homeostasis. Knockdown of calcineurin in Drosophila melanogaster led to a decrease in body weight and energy stores, and increased energy expenditure. In mice, global deficiency of catalytic subunit Ppp3cb, and tissue-specific ablation of regulatory subunit Ppp3r1 from skeletal muscle, but not adipose tissue or liver, led to protection from high-fat-diet-induced obesity and comorbid sequelæ. Ser637 hyperphosphorylation of dynamin-related protein 1 (Drp1) in skeletal muscle of calcineurin-deficient mice was associated with mitochondrial elongation into power-cable-shaped filaments and increased mitochondrial respiration, but also with attenuated exercise performance. Our data suggest that calcineurin acts as highly conserved pivot for the adaptive metabolic responses to environmental changes such as high-fat, high-sugar diets or exercise.
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Affiliation(s)
- Paul T Pfluger
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Dhiraj G Kabra
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Sonja C Schriever
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Katrin Pfuhlmann
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | | | - Maarit Lehti
- LIKES Research Center for Sport and Health Sciences, 40720 Jyväskylä, Finland
| | - Jon Weber
- Department of Internal Medicine, Division of Endocrinology, Metabolic Diseases Institute, University of Cincinnati, Cincinnati, OH 45237, USA
| | - Maria Kutschke
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Jan Rozman
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany; German Mouse Clinic, Institute of Experimental Genetics, Helmholtz-Zentrum München, 85764 Neuherberg, Germany
| | - John W Elrod
- Department of Pharmacology, Center for Translational Medicine, Temple University School of Medicine, Philadelphia, PA 19140, USA
| | - Andrea L Hevener
- Division of Endocrinology, Diabetes, and Hypertension, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Annette Feuchtinger
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Martin Hrabě de Angelis
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany; German Mouse Clinic, Institute of Experimental Genetics, Helmholtz-Zentrum München, 85764 Neuherberg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Stephanie M Rollmann
- Department of Biological Sciences, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Bruce J Aronow
- Division of Biomedical Informatics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Timo D Müller
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Diego Perez-Tilve
- Department of Internal Medicine, Division of Endocrinology, Metabolic Diseases Institute, University of Cincinnati, Cincinnati, OH 45237, USA
| | - Martin Jastroch
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Maria De Luca
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Jeffery D Molkentin
- Howard Hughes Medical Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Matthias H Tschöp
- Helmholtz Diabetes Center, Helmholtz Zentrum München, 85764 Neuherberg, Germany; Division of Metabolic Diseases, Technische Universität München, 80333 Munich, Germany.
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46
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Bi Z, Merl-Pham J, Uehlein N, Zimmer I, Mühlhans S, Aichler M, Walch AK, Kaldenhoff R, Palme K, Schnitzler JP, Block K. RNAi-mediated downregulation of poplar plasma membrane intrinsic proteins (PIPs) changes plasma membrane proteome composition and affects leaf physiology. J Proteomics 2015; 128:321-32. [PMID: 26248320 DOI: 10.1016/j.jprot.2015.07.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 07/16/2015] [Accepted: 07/23/2015] [Indexed: 11/19/2022]
Abstract
Plasma membrane intrinsic proteins (PIPs) are one subfamily of aquaporins that mediate the transmembrane transport of water. To reveal their function in poplar, we generated transgenic poplar plants in which the translation of PIP genes was downregulated by RNA interference investigated these plants with a comprehensive leaf plasma membrane proteome and physiome analysis. First, inhibition of PIP synthesis strongly altered the leaf plasma membrane protein composition. Strikingly, several signaling components and transporters involved in the regulation of stomatal movement were differentially regulated in transgenic poplars. Furthermore, hormonal crosstalk related to abscisic acid, auxin and brassinosteroids was altered, in addition to cell wall biosynthesis/cutinization, the organization of cellular structures and membrane trafficking. A physiological analysis confirmed the proteomic results. The leaves had wider opened stomata and higher net CO2 assimilation and transpiration rates as well as greater mesophyll conductance for CO2 (gm) and leaf hydraulic conductance (Kleaf). Based on these results, we conclude that PIP proteins not only play essential roles in whole leaf water and CO2 flux but have important roles in the regulation of stomatal movement.
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Affiliation(s)
- Zhen Bi
- Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, Ingolstädter Landstr.1, 85764 Neuherberg, Germany
| | - Juliane Merl-Pham
- Research Unit Protein Science-Core Facility Proteomics, Helmholtz Zentrum München, Ingolstädter Landstr.1, 85764 Neuherberg, Germany
| | - Norbert Uehlein
- Institute of Applied Plant Science, University of Technology Darmstadt, Schnittspahndtr.10, 64287 Darmstadt, Germany
| | - Ina Zimmer
- Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, Ingolstädter Landstr.1, 85764 Neuherberg, Germany
| | - Stefanie Mühlhans
- Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, Ingolstädter Landstr.1, 85764 Neuherberg, Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstr.1, 85764 Neuherberg, Germany
| | - Axel Karl Walch
- Research Unit Analytical Pathology, Helmholtz Zentrum München, Ingolstädter Landstr.1, 85764 Neuherberg, Germany
| | - Ralf Kaldenhoff
- Institute of Applied Plant Science, University of Technology Darmstadt, Schnittspahndtr.10, 64287 Darmstadt, Germany
| | - Klaus Palme
- BIOSS Centre for Biological Signalling Studies, ZBSA Centre for Biosystems Studies, Faculty of Biology, Schänzlestr. 1, University of Freiburg, 79104 Freiburg, Germany
| | - Jörg-Peter Schnitzler
- Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, Ingolstädter Landstr.1, 85764 Neuherberg, Germany
| | - Katja Block
- Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, Ingolstädter Landstr.1, 85764 Neuherberg, Germany.
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Schenck TL, Stewart J, Lin S, Aichler M, Machens HG, Giunta RE. Anatomical and histomorphometric observations on the transfer of the anterior interosseous nerve to the deep branch of the ulnar nerve. J Hand Surg Eur Vol 2015; 40:591-6. [PMID: 25261412 DOI: 10.1177/1753193414551909] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
This study focuses on the anatomical and histomorphometric features of the transfer of the anterior interosseous nerve to the deep motor branch of the ulnar nerve. The transfer was carried out in 15 cadaver specimens and is described using relevant anatomical landmarks. Nerve samples of donor and target nerves were histomorphometrically analysed and compared. The superficial and the deep ulnar branches had to be separated from each other for a length of 67 mm (SD 12; range 50-85) to reach the site of coaptation. We identified a suitable site for coaptation lying proximal to the pronator quadratus muscle, 202 mm (SD 15; range 185-230) distal to the medial epicondyle of the humerus. The features of the anterior interosseous nerve included a smaller nerve diameter, smaller cross-sectional area of fascicles, fewer fascicles and axons, but a similar axon density. The histomorphometric inferiority of the anterior interosseous nerve raises a question about whether it should be transferred only to selected parts of the deep motor branch of the ulnar nerve.Level III.
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Affiliation(s)
- T L Schenck
- Department of Plastic Surgery and Hand Surgery, University Hospital rechts der Isar, Technical University Munich, Germany
| | - J Stewart
- Hand Surgery, Plastic Surgery and Aesthetic Surgery, Ludwig Maximilians University Munich, Germany
| | - S Lin
- Hand Surgery, Plastic Surgery and Aesthetic Surgery, Ludwig Maximilians University Munich, Germany
| | - M Aichler
- Research Unit Analytical Pathology, Helmholtzzentrum München, German Research Center for Environmental Health, Munich, Germany
| | - H-G Machens
- Department of Plastic Surgery and Hand Surgery, University Hospital rechts der Isar, Technical University Munich, Germany
| | - R E Giunta
- Hand Surgery, Plastic Surgery and Aesthetic Surgery, Ludwig Maximilians University Munich, Germany
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48
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Velikova V, Müller C, Ghirardo A, Rock TM, Aichler M, Walch A, Schmitt-Kopplin P, Schnitzler JP. Knocking Down of Isoprene Emission Modifies the Lipid Matrix of Thylakoid Membranes and Influences the Chloroplast Ultrastructure in Poplar. Plant Physiol 2015; 168:859-70. [PMID: 25975835 PMCID: PMC4741320 DOI: 10.1104/pp.15.00612] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 05/13/2015] [Indexed: 05/20/2023]
Abstract
Isoprene is a small lipophilic molecule with important functions in plant protection against abiotic stresses. Here, we studied the lipid composition of thylakoid membranes and chloroplast ultrastructure in isoprene-emitting (IE) and nonisoprene-emitting (NE) poplar (Populus × canescens). We demonstrated that the total amount of monogalactosyldiacylglycerols, digalactosyldiacylglycerols, phospholipids, and fatty acids is reduced in chloroplasts when isoprene biosynthesis is blocked. A significantly lower amount of unsaturated fatty acids, particularly linolenic acid in NE chloroplasts, was associated with the reduced fluidity of thylakoid membranes, which in turn negatively affects photosystem II photochemical efficiency. The low photosystem II photochemical efficiency in NE plants was negatively correlated with nonphotochemical quenching and the energy-dependent component of nonphotochemical quenching. Transmission electron microscopy revealed alterations in the chloroplast ultrastructure in NE compared with IE plants. NE chloroplasts were more rounded and contained fewer grana stacks and longer stroma thylakoids, more plastoglobules, and larger associative zones between chloroplasts and mitochondria. These results strongly support the idea that in IE species, the function of this molecule is closely associated with the structural organization and functioning of plastidic membranes.
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Affiliation(s)
- Violeta Velikova
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria (V.V.); andResearch Unit Analytical BioGeoChemistry (C.M., T.M.R., P.S.-K.), Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology (V.V., A.G., J.-P.S.), and Research Unit Analytical Pathology (M.A., A.W.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Constanze Müller
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria (V.V.); andResearch Unit Analytical BioGeoChemistry (C.M., T.M.R., P.S.-K.), Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology (V.V., A.G., J.-P.S.), and Research Unit Analytical Pathology (M.A., A.W.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Andrea Ghirardo
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria (V.V.); andResearch Unit Analytical BioGeoChemistry (C.M., T.M.R., P.S.-K.), Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology (V.V., A.G., J.-P.S.), and Research Unit Analytical Pathology (M.A., A.W.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Theresa Maria Rock
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria (V.V.); andResearch Unit Analytical BioGeoChemistry (C.M., T.M.R., P.S.-K.), Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology (V.V., A.G., J.-P.S.), and Research Unit Analytical Pathology (M.A., A.W.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Michaela Aichler
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria (V.V.); andResearch Unit Analytical BioGeoChemistry (C.M., T.M.R., P.S.-K.), Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology (V.V., A.G., J.-P.S.), and Research Unit Analytical Pathology (M.A., A.W.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Axel Walch
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria (V.V.); andResearch Unit Analytical BioGeoChemistry (C.M., T.M.R., P.S.-K.), Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology (V.V., A.G., J.-P.S.), and Research Unit Analytical Pathology (M.A., A.W.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Philippe Schmitt-Kopplin
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria (V.V.); andResearch Unit Analytical BioGeoChemistry (C.M., T.M.R., P.S.-K.), Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology (V.V., A.G., J.-P.S.), and Research Unit Analytical Pathology (M.A., A.W.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
| | - Jörg-Peter Schnitzler
- Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria (V.V.); andResearch Unit Analytical BioGeoChemistry (C.M., T.M.R., P.S.-K.), Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology (V.V., A.G., J.-P.S.), and Research Unit Analytical Pathology (M.A., A.W.), Helmholtz Zentrum München, 85764 Neuherberg, Germany
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Buck A, Ly A, Balluff B, Sun N, Gorzolka K, Feuchtinger A, Janssen KP, Kuppen PJK, van de Velde CJH, Weirich G, Erlmeier F, Langer R, Aubele M, Zitzelsberger H, Aichler M, Walch A. High-resolution MALDI-FT-ICR MS imaging for the analysis of metabolites from formalin-fixed, paraffin-embedded clinical tissue samples. J Pathol 2015; 237:123-32. [DOI: 10.1002/path.4560] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 05/05/2015] [Accepted: 05/07/2015] [Indexed: 12/23/2022]
Affiliation(s)
- Achim Buck
- Research Unit Analytical Pathology; Helmholtz Zentrum München; Neuherberg Germany
| | - Alice Ly
- Research Unit Analytical Pathology; Helmholtz Zentrum München; Neuherberg Germany
| | - Benjamin Balluff
- Centre for Proteomics and Metabolomics; Leiden University Medical Center; Leiden The Netherlands
| | - Na Sun
- Research Unit Analytical Pathology; Helmholtz Zentrum München; Neuherberg Germany
| | - Karin Gorzolka
- Research Unit Analytical Pathology; Helmholtz Zentrum München; Neuherberg Germany
| | - Annette Feuchtinger
- Research Unit Analytical Pathology; Helmholtz Zentrum München; Neuherberg Germany
| | - Klaus-Peter Janssen
- Department of Surgery, Klinikum Rechts der Isar; Technische Universität München; Munich Germany
| | - Peter JK Kuppen
- Department of Surgery; Leiden University Medical Center; Leiden The Netherlands
| | | | - Gregor Weirich
- Institute of Pathology; Technische Universität München; Munich Germany
| | | | - Rupert Langer
- Institute of Pathology; Technische Universität München; Munich Germany
| | - Michaela Aubele
- Institute of Pathology; Helmholtz Zentrum München; Neuherberg Germany
| | - Horst Zitzelsberger
- Research Unit Radiation Cytogenetics; Helmholtz Zentrum München; Neuherberg Germany
| | - Michaela Aichler
- Research Unit Analytical Pathology; Helmholtz Zentrum München; Neuherberg Germany
| | - Axel Walch
- Research Unit Analytical Pathology; Helmholtz Zentrum München; Neuherberg Germany
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50
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Aichler M, Motschmann M, Jütting U, Luber B, Becker K, Ott K, Lordick F, Langer R, Feith M, Siewert JR, Walch A. Epidermal growth factor receptor (EGFR) is an independent adverse prognostic factor in esophageal adenocarcinoma patients treated with cisplatin-based neoadjuvant chemotherapy. Oncotarget 2015; 5:6620-32. [PMID: 25216514 PMCID: PMC4196151 DOI: 10.18632/oncotarget.2268] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Neoadjuvant platin-based therapy is accepted as a standard therapy for advanced esophageal adenocarcinoma (EAC). Patients who respond have a better survival prognosis, but still a significant number of responder patients die from tumor recurrence. Molecular markers for prognosis in neoadjuvantly treated EAC patients have not been identified yet. We investigated the epidermal growth factor receptor (EGFR) in prognosis and chemotherapy resistance in these patients. Two EAC patient cohorts, either treated by neoadjuvant cisplatin-based chemotherapy followed by surgery (n=86) or by surgical resection (n=46) were analyzed for EGFR protein expression and gene copy number. Data were correlated with clinical and histopathological response, disease-free and overall survival. In case of EGFR overexpression, the prognosis for neoadjuvant chemotherapy responders was poor as in non-responders. Responders had a significantly better disease-free survival than non-responders only if EGFR expression level (p=0.0152) or copy number (p=0.0050) was low. Comparing neoadjuvantly treated patients and primary resection patients, tumors of non-responder patients more frequently exhibited EGFR overexpression, providing evidence that EGFR is a factor for indicating chemotherapy resistance. EGFR overexpression and gene copy number are independent adverse prognostic factors for neoadjuvant chemotherapy-treated EAC patients, particularly for responders. Furthermore, EGFR overexpression is involved in resistance to cisplatin-based neoadjuvant chemotherapy.
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Affiliation(s)
- Michaela Aichler
- Research Unit Analytical Pathology- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstraße 1, Neuherberg, Germany
| | - Martin Motschmann
- Research Unit Analytical Pathology- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstraße 1, Neuherberg, Germany
| | - Uta Jütting
- Institute of Computational Biology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstraße 1, Neuherberg, Germany
| | - Birgit Luber
- Institute of Pathology, Technische Universität München, Trogerstraße 18, München, Germany
| | - Karen Becker
- Institute of Pathology, Technische Universität München, Trogerstraße 18, München, Germany
| | - Katja Ott
- Department of Surgery, University Hospital of Heidelberg, Im Neuenheimer Feld 110, Heidelberg, Germany
| | - Florian Lordick
- University Cancer Center Leipzig, University Clinic Leipzig, Liebigstraße 20, Leipzig, Germany
| | - Rupert Langer
- Institute of Pathology, Technische Universität München, Trogerstraße 18, München, Germany
| | - Marcus Feith
- Department of Surgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Straße 22, München, Germany
| | - Jörg Rüdiger Siewert
- Directorate, University of Freiburg, Hugstetter Straße 55, 79106 Freiburg, Germany
| | - Axel Walch
- Research Unit Analytical Pathology- Institute of Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Ingolstaedter Landstraße 1, Neuherberg, Germany
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