1
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Haakonsen DL, Heider M, Ingersoll AJ, Vodehnal K, Witus SR, Uenaka T, Wernig M, Rapé M. Stress response silencing by an E3 ligase mutated in neurodegeneration. Nature 2024; 626:874-880. [PMID: 38297121 PMCID: PMC10881396 DOI: 10.1038/s41586-023-06985-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 12/15/2023] [Indexed: 02/02/2024]
Abstract
Stress response pathways detect and alleviate adverse conditions to safeguard cell and tissue homeostasis, yet their prolonged activation induces apoptosis and disrupts organismal health1-3. How stress responses are turned off at the right time and place remains poorly understood. Here we report a ubiquitin-dependent mechanism that silences the cellular response to mitochondrial protein import stress. Crucial to this process is the silencing factor of the integrated stress response (SIFI), a large E3 ligase complex mutated in ataxia and in early-onset dementia that degrades both unimported mitochondrial precursors and stress response components. By recognizing bifunctional substrate motifs that equally encode protein localization and stability, the SIFI complex turns off a general stress response after a specific stress event has been resolved. Pharmacological stress response silencing sustains cell survival even if stress resolution failed, which underscores the importance of signal termination and provides a roadmap for treating neurodegenerative diseases caused by mitochondrial import defects.
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Affiliation(s)
- Diane L Haakonsen
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, USA
- Howard Hughes Medical Institute, University of California at Berkeley, Berkeley, CA, USA
| | - Michael Heider
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, USA
| | - Andrew J Ingersoll
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, USA
| | - Kayla Vodehnal
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Samuel R Witus
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, USA
- Howard Hughes Medical Institute, University of California at Berkeley, Berkeley, CA, USA
| | - Takeshi Uenaka
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Marius Wernig
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Michael Rapé
- Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA, USA.
- Howard Hughes Medical Institute, University of California at Berkeley, Berkeley, CA, USA.
- California Institute for Quantitative Biosciences (QB3), University of California at Berkeley, Berkeley, CA, USA.
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2
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Heider M, Stegherr H, Nordsieck R, Hähner J. Assessing Model Requirements for Explainable AI: A Template and Exemplary Case Study. Artif Life 2023; 29:468-486. [PMID: 37610755 DOI: 10.1162/artl_a_00414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
In sociotechnical settings, human operators are increasingly assisted by decision support systems. By employing such systems, important properties of sociotechnical systems, such as self-adaptation and self-optimization, are expected to improve further. To be accepted by and engage efficiently with operators, decision support systems need to be able to provide explanations regarding the reasoning behind specific decisions. In this article, we propose the use of learning classifier systems (LCSs), a family of rule-based machine learning methods, to facilitate and highlight techniques to improve transparent decision-making. Furthermore, we present a novel approach to assessing application-specific explainability needs for the design of LCS models. For this, we propose an application-independent template of seven questions. We demonstrate the approach's use in an interview-based case study for a manufacturing scenario. We find that the answers received do yield useful insights for a well-designed LCS model and requirements for stakeholders to engage actively with an intelligent agent.
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Affiliation(s)
| | | | | | - Jörg Hähner
- Universität Augsburg, Organic Computing Group
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3
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Paulmann C, Spallek R, Karpiuk O, Heider M, Schäffer I, Zecha J, Klaeger S, Walzik M, Öllinger R, Engleitner T, Wirth M, Keller U, Krönke J, Rudelius M, Kossatz S, Rad R, Kuster B, Bassermann F. The OTUD6B-LIN28B-MYC axis determines the proliferative state in multiple myeloma. EMBO J 2022; 41:e110871. [PMID: 36059274 PMCID: PMC9574752 DOI: 10.15252/embj.2022110871] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 07/27/2022] [Accepted: 08/01/2022] [Indexed: 11/13/2022] Open
Abstract
Deubiquitylases (DUBs) are therapeutically amenable components of the ubiquitin machinery that stabilize substrate proteins. Their inhibition can destabilize oncoproteins that may otherwise be undruggable. Here, we screened for DUB vulnerabilities in multiple myeloma, an incurable malignancy with dependency on the ubiquitin proteasome system and identified OTUD6B as an oncogene that drives the G1/S‐transition. LIN28B, a suppressor of microRNA biogenesis, is specified as a bona fide cell cycle‐specific substrate of OTUD6B. Stabilization of LIN28B drives MYC expression at G1/S, which in turn allows for rapid S‐phase entry. Silencing OTUD6B or LIN28B inhibits multiple myeloma outgrowth in vivo and high OTUD6B expression evolves in patients that progress to symptomatic multiple myeloma and results in an adverse outcome of the disease. Thus, we link proteolytic ubiquitylation with post‐transcriptional regulation and nominate OTUD6B as a potential mediator of the MGUS‐multiple myeloma transition, a central regulator of MYC, and an actionable vulnerability in multiple myeloma and other tumors with an activated OTUD6B‐LIN28B axis.
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Affiliation(s)
- Carmen Paulmann
- Department of Medicine III, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany
| | - Ria Spallek
- Department of Medicine III, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany
| | - Oleksandra Karpiuk
- Department of Medicine III, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany
| | - Michael Heider
- Department of Medicine III, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany
| | - Isabell Schäffer
- Department of Medicine III, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany
| | - Jana Zecha
- Chair of Proteomics and Bioanalytics, Technical University of Munich, Freising, Germany
| | - Susan Klaeger
- Chair of Proteomics and Bioanalytics, Technical University of Munich, Freising, Germany
| | - Michaela Walzik
- Department of Medicine III, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany
| | - Rupert Öllinger
- TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany.,Department of Medicine II, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,Institute of Molecular Oncology and Functional Genomics, Technical University of Munich, Munich, Germany
| | - Thomas Engleitner
- TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany.,Department of Medicine II, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,Institute of Molecular Oncology and Functional Genomics, Technical University of Munich, Munich, Germany
| | - Matthias Wirth
- Department of Hematology, Oncology and Cancer Immunology, Campus Benjamin Franklin Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Ulrich Keller
- Department of Hematology, Oncology and Cancer Immunology, Campus Benjamin Franklin Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Heidelberg, Germany.,Max-Delbrück-Center for Molecular Medicine, Berlin, Germany
| | - Jan Krönke
- Department of Hematology, Oncology and Cancer Immunology, Campus Benjamin Franklin Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Heidelberg, Germany
| | - Martina Rudelius
- Institute of Pathology, Ludwigs Maximilians University, Munich, Germany
| | - Susanne Kossatz
- TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany.,Department of Nuclear Medicine, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Roland Rad
- TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany.,Department of Medicine II, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,Institute of Molecular Oncology and Functional Genomics, Technical University of Munich, Munich, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Heidelberg, Germany
| | - Bernhard Kuster
- Chair of Proteomics and Bioanalytics, Technical University of Munich, Freising, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Heidelberg, Germany
| | - Florian Bassermann
- Department of Medicine III, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Heidelberg, Germany
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4
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Morath V, Heider M, Mittelhäuser M, Rolbieski H, Stroh J, Calais J, Eiber M, Bassermann F, Weber WA. Initial evaluation of [ 18F]-FACBC for PET imaging of multiple myeloma. EJNMMI Res 2022; 12:4. [PMID: 35099620 PMCID: PMC8804025 DOI: 10.1186/s13550-022-00876-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 12/24/2021] [Indexed: 11/17/2022] Open
Abstract
RATIONALE Multiple myeloma (MM) cells synthesize large amounts of paraproteins, making radiolabeled amino acids promising candidates for PET imaging of MM patients. METHODS We compare tumor uptake of the two amino acid analogs [18F]-fluoroethyltyrosine and [18F]-FACBC in a MM xenograft model and show the feasibility of PET imaging with [18F]-FACBC in a MM patient. RESULTS Preclinically [18F]-FACBC showed superior performance, mainly due to the uptake via the ASC-system. In a subsequent proof-of-concept investigation [18F]-FACBC PET was performed in a MM patient. It allowed identification of both lesions with and without CT correlate (SUVmean 8.0 or 7.9) based on higher uptake compared to normal bone marrow (SUVmean 5.7). Bone signal was elevated compared to non-MM patients, and, thus [18F]-FACBC potentially allows the assessment of bone marrow infiltration. CONCLUSION The FDA/EMA approved PET agent [18F]-FACBC is promising for imaging MM and should be further evaluated in prospective clinical studies.
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Affiliation(s)
- Volker Morath
- Department of Nuclear Medicine, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, 81675, Munich, Germany
| | - Michael Heider
- Department of Medicine III, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, 81675, Munich, Germany
| | - Markus Mittelhäuser
- Department of Nuclear Medicine, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, 81675, Munich, Germany
| | - Hannes Rolbieski
- Department of Nuclear Medicine, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, 81675, Munich, Germany
| | - Jacob Stroh
- Department of Medicine III, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, 81675, Munich, Germany
| | - Jérémie Calais
- Ahmanson Translational Theranostics Division, Department of Molecular and Medical Pharmacology, University of California Los Angeles, Los Angeles, CA, USA
| | - Matthias Eiber
- Department of Nuclear Medicine, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, 81675, Munich, Germany
| | - Florian Bassermann
- Department of Medicine III, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, 81675, Munich, Germany
- TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, 81675, Munich, Germany
| | - Wolfgang A Weber
- Department of Nuclear Medicine, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, 81675, Munich, Germany.
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5
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Heider M, Nickel K, Högner M, Bassermann F. Multiple Myeloma: Molecular Pathogenesis and Disease Evolution. Oncol Res Treat 2021; 44:672-681. [PMID: 34749378 DOI: 10.1159/000520312] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [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: 07/30/2021] [Accepted: 10/12/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Multiple myeloma is the second most common hematologic malignancy, which to date remains incurable despite advances in treatment strategies including the use of novel substances such as proteasome inhibitors, immunomodulatory drugs, and monoclonal antibodies. SUMMARY The bone marrow-based disease is preceded by the 2 sequential premalignant conditions: monoclonal gammo-pathy of undetermined significance and smoldering myeloma. Plasma cell leukemia and extramedullary disease occur, when malignant clones lose their dependency on the bone marrow. Key genetic features of these plasma cell dyscrasias include chromosomal aberrations such as translocations and hyperdiploidy, which occur during error-prone physiologic processes in B-cell development. Next-generation sequencing studies have identified mutations in major oncogenic pathways and tumor suppressors, which contribute to the pathogenesis of multiple myeloma and have revealed insights into the clonal evolution of the disease, particularly along different lines of therapy. More recently, the importance of epigenetic alterations and the role of the bone marrow microenvironment, including immune and osteogenic cells, have become evident. Key Messages: We herein review the current knowledge of the pathogenesis of multiple myeloma, which is crucial for the development of novel targeted therapeutic strategies. These can contribute to the endeavor to make multiple myeloma a curable disease.
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Affiliation(s)
- Michael Heider
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany
| | - Katharina Nickel
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Marion Högner
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Florian Bassermann
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany
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6
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Heider M, Grass S, Dill V, Rämisch S, Winter C, Verbeek M, Götze KS, Bassermann F, Jilg S. Cyclophosphamide plus etoposide is a safe and effective mobilization regimen in patients with multiple myeloma. Transfus Apher Sci 2021; 60:103197. [PMID: 34175195 DOI: 10.1016/j.transci.2021.103197] [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: 03/21/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 11/29/2022]
Abstract
High-dose chemotherapy followed by autologous stem cell transplantation is a major component in the treatment of patients with multiple myeloma. As a prerequisite, the successful collection of a sufficient number of viable peripheral blood hematopoietic CD34+ cells is critical. A common standard protocol for mobilization is currently not defined and critically discussed especially in German-speaking Europe. In times of the Covid-19 pandemic, safe and effective strategies have to be chosen to minimize hospitalization times and severe courses. In this single-center retrospective analysis, safety and efficacy of cyclophosphamide plus etoposide (CE) and growth-factor support (n = 33) was compared to cyclophosphamide mono treatment and growth-factor support (n = 49) in 82 patients with multiple myeloma at first diagnosis. CE was superior to cyclophosphamide mono with a significantly higher number of collected CD34+ cells (15.46 × 106 CD34+ cells/kg vs. 9.92 × 106 CD34+ cells/kg), significantly faster engraftment of granulocytes after stem cell transplantation (day 10.5 vs. day 11.6), shorter duration of the inpatient stay (17.47 days vs. 19.16 days) and significantly less transfusions (8.82 % vs. 30.61 % patients receiving transfusions). The safety profile was comparable in both groups and in line with published data. We conclude that CE is a safe and highly effective mobilization protocol in patients with multiple myeloma at first diagnosis and appears to be superior to the commonly used cyclophosphamide mono regimen.
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Affiliation(s)
- Michael Heider
- Medical Department III for Hematology and Oncology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Germany; Center for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar, Technical University of Munich, Germany
| | - Sandra Grass
- Medical Department III for Hematology and Oncology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Germany
| | - Veronika Dill
- Medical Department III for Hematology and Oncology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Germany
| | - Stephanie Rämisch
- Medical Department III for Hematology and Oncology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Germany
| | - Christof Winter
- Institute of Clinical Chemistry and Pathobiochemistry, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Mareike Verbeek
- Medical Department III for Hematology and Oncology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Germany
| | - Katharina S Götze
- Medical Department III for Hematology and Oncology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Germany; Deutsches Konsortium für Translationale Krebsforschung (DKTK), 69120 Heidelberg, Germany
| | - Florian Bassermann
- Medical Department III for Hematology and Oncology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Germany; Center for Translational Cancer Research (TranslaTUM), Klinikum rechts der Isar, Technical University of Munich, Germany; Deutsches Konsortium für Translationale Krebsforschung (DKTK), 69120 Heidelberg, Germany.
| | - Stefanie Jilg
- Medical Department III for Hematology and Oncology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Germany.
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7
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Heider M, Eichner R, Stroh J, Morath V, Kuisl A, Zecha J, Lawatscheck J, Baek K, Garz AK, Rudelius M, Deuschle FC, Keller U, Lemeer S, Verbeek M, Götze KS, Skerra A, Weber WA, Buchner J, Schulman BA, Kuster B, Fernández-Sáiz V, Bassermann F. The IMiD target CRBN determines HSP90 activity toward transmembrane proteins essential in multiple myeloma. Mol Cell 2021; 81:1170-1186.e10. [PMID: 33571422 PMCID: PMC7980223 DOI: 10.1016/j.molcel.2020.12.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 11/28/2020] [Accepted: 12/30/2020] [Indexed: 12/23/2022]
Abstract
The complex architecture of transmembrane proteins requires quality control (QC) of folding, membrane positioning, and trafficking as prerequisites for cellular homeostasis and intercellular communication. However, it has remained unclear whether transmembrane protein-specific QC hubs exist. Here we identify cereblon (CRBN), the target of immunomodulatory drugs (IMiDs), as a co-chaperone that specifically determines chaperone activity of HSP90 toward transmembrane proteins by means of counteracting AHA1. This function is abrogated by IMiDs, which disrupt the interaction of CRBN with HSP90. Among the multiple transmembrane protein clients of CRBN-AHA1-HSP90 revealed by cell surface proteomics, we identify the amino acid transporter LAT1/CD98hc as a determinant of IMiD activity in multiple myeloma (MM) and present an Anticalin-based CD98hc radiopharmaceutical for MM radio-theranostics. These data establish the CRBN-AHA1-HSP90 axis in the biogenesis of transmembrane proteins, link IMiD activity to tumor metabolism, and nominate CD98hc and LAT1 as attractive diagnostic and therapeutic targets in MM. CRBN functions as a transmembrane protein-specific co-chaperone of HSP90 Disruption of CRBN-HSP90 interaction determines the anti-tumor activity of IMiDs The CD98hc/LAT1 complex is a central target of IMiDs in multiple myeloma CD98hc-Anticalin is a theranostic tool in multiple myeloma
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Affiliation(s)
- Michael Heider
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, 81675 Munich, Germany
| | - Ruth Eichner
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, 81675 Munich, Germany
| | - Jacob Stroh
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, 81675 Munich, Germany
| | - Volker Morath
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany
| | - Anna Kuisl
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, 81675 Munich, Germany
| | - Jana Zecha
- Department of Proteomics and Bioanalytics, Technical University of Munich, 85354 Freising, Germany; German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Jannis Lawatscheck
- Center for Integrated Protein Science at the Department of Chemistry, Technical University of Munich, 85748 Garching, Germany
| | - Kheewoong Baek
- Department of Molecular Machines and Signaling, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Anne-Kathrin Garz
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany
| | - Martina Rudelius
- Institute of Pathology, Ludwig-Maximilians University, 80337 Munich, Germany
| | | | - Ulrich Keller
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; Department of Hematology, Oncology and Tumor Immunology (Campus Benjamin Franklin), Charité - Universitätsmedizin Berlin, 12200 Berlin, Germany
| | - Simone Lemeer
- Department of Proteomics and Bioanalytics, Technical University of Munich, 85354 Freising, Germany
| | - Mareike Verbeek
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany
| | - Katharina S Götze
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Arne Skerra
- Lehrstuhl für Biologische Chemie, Technical University of Munich, 85354 Freising, Germany
| | - Wolfgang A Weber
- Department of Nuclear Medicine, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Johannes Buchner
- Center for Integrated Protein Science at the Department of Chemistry, Technical University of Munich, 85748 Garching, Germany
| | - Brenda A Schulman
- Department of Molecular Machines and Signaling, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany
| | - Bernhard Kuster
- Department of Proteomics and Bioanalytics, Technical University of Munich, 85354 Freising, Germany; German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Vanesa Fernández-Sáiz
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, 81675 Munich, Germany.
| | - Florian Bassermann
- Department of Medicine III, Klinikum rechts der Isar, Technical University of Munich, 81675 Munich, Germany; TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, 81675 Munich, Germany; German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany.
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8
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Müller-Thomas C, Heider M, Piontek G, Schlensog M, Bassermann F, Kirchner T, Germing U, Götze KS, Rudelius M. Prognostic value of indoleamine 2,3 dioxygenase in patients with higher-risk myelodysplastic syndromes treated with azacytidine. Br J Haematol 2020; 190:361-370. [PMID: 32350858 DOI: 10.1111/bjh.16652] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 02/27/2020] [Accepted: 03/18/2020] [Indexed: 12/19/2022]
Abstract
Hypomethylating agents (HMAs) are widely used in patients with higher-risk myelodysplastic syndromes (MDS) not eligible for stem cell transplantation; however, the response rate is <50%. Reliable predictors of response are still missing, and it is a major challenge to develop new treatment strategies. One current approach is the combination of azacytidine (AZA) with checkpoint inhibitors; however, the potential benefit of targeting the immunomodulator indoleamine-2,3-dioxygenase (IDO-1) has not yet been evaluated. We observed moderate to strong IDO-1 expression in 37% of patients with high-risk MDS. IDO-1 positivity was predictive of treatment failure and shorter overall survival. Moreover, IDO-1 positivity correlated inversely with the number of infiltrating CD8+ T cells, and IDO-1+ patients failed to show an increase in CD8+ T cells under AZA treatment. In vitro experiments confirmed tryptophan catabolism and depletion of CD8+ T cells in IDO-1+ MDS, suggesting that IDO-1 expression induces an immunosuppressive microenvironment in MDS, thereby leading to treatment failure under AZA treatment. In conclusion, IDO-1 is expressed in more than one-third of patients with higher-risk MDS, and is predictive of treatment failure and shorter overall survival. Therefore, IDO-1 is emerging as a promising predictor and therapeutic target, especially for combination therapies with HMAs or checkpoint inhibitors.
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Affiliation(s)
- Catharina Müller-Thomas
- Department of Medicine I, Hematology and Oncology, München Klinik Schwabing, Munich, Germany.,Department of Medicine III, Hematology and Oncology, Technische Universität München, Munich, Germany
| | - Michael Heider
- Department of Medicine III, Hematology and Oncology, Technische Universität München, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany
| | - Guido Piontek
- Institute of Pathology, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Martin Schlensog
- Institute of Pathology, Heinrich-Heine University, Duesseldorf, Germany
| | - Florian Bassermann
- Department of Medicine III, Hematology and Oncology, Technische Universität München, Munich, Germany.,TranslaTUM, Center for Translational Cancer Research, Technical University of Munich, Munich, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Heidelberg, Germany
| | - Thomas Kirchner
- Institute of Pathology, Ludwig-Maximilians-Universität München, Munich, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Heidelberg, Germany
| | - Ulrich Germing
- Department of Hematology, Oncology and Clinical Immunology, Heinrich-Heine University, Duesseldorf, Germany
| | - Katharina S Götze
- Department of Medicine III, Hematology and Oncology, Technische Universität München, Munich, Germany.,Deutsches Konsortium für Translationale Krebsforschung (DKTK), Heidelberg, Germany
| | - Martina Rudelius
- Institute of Pathology, Ludwig-Maximilians-Universität München, Munich, Germany
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9
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Abstract
A 46-years old male patient suffered for several years from painful swelling of the distal soft tissues of the great toes associated with onychodystrophy. Mycological studies were negative. By means of radiological and scintigrafic examination and because of the typical clinical signs, the diagnosis of psoriatic onycho-pachydermo-periostitis of the great toes was established. The syndrome which is highly evocative of rheumatoid psoriasis was first described by Fournié and co-workers in 1989. Oral retinoids were helpful in diminishing both pain and soft tissue swelling of the great toes.
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Affiliation(s)
- A Ziemer
- Hautklinik und Immunologisches Zentrum, Städtisches Klinikum Dessau
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10
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Heider M, Schliebs R, Rossner S, Bigl V. Basal forebrain cholinergic immunolesion by 192IgG-saporin: evidence for a presynaptic location of subpopulations of alpha 2- and beta-adrenergic as well as 5-HT2A receptors on cortical cholinergic terminals. Neurochem Res 1997; 22:957-66. [PMID: 9239751 DOI: 10.1023/a:1022418708293] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
To study whether the changes in cortical noradrenergic and serotonergic mechanisms observed in patients with Alzheimer's disease are the consequence of reduced cortical cholinergic activity, a novel colinergic immunotoxin (conjugate of the monoclonal antibody 192IgG against the lower affinity nerve growth factor receptor with the cytotoxic protein saporin, 192IgG-saporin) was used to produce a specific and selective loss of cholinergic cells in rat basal forebrain nuclei. To correlate the responses to cholinergic immunolesion in cholinoceptive cortical target regions with cholinergic hypoactivity, quantitative receptor autoradiography to measure adrenoceptors and 5-hydroxytryptamine (5-HT) receptor subtypes, and histochemistry to estimate acetylcholinesterase activity, were performed in adjacent brain sections. alpha 1-adrenoceptor and 5-HT1A receptor binding were not affected by cholinergic immunolesion in any of the cortical and hippocampal regions studied. However, cholinergic immunolesion resulted in significantly reduced alpha 2- and beta-adrenoceptor as well as 5-HT2A receptor binding in a number of cortical and hippocampal regions displaying a reduced activity of acetylcholinesterase, already detectable seven days after a single injection of 192IgG-saporin and persisting up to three months post lesion without any significant recovery. The data suggest that at least a subpopulation of alpha 2- and beta-adrenoceptor as well 5-HT2A receptor subtype is present on cortical and hippocampal cholinergic terminals originating in the basal forebrain. The lesion-induced receptor changes suggest that the alterations in cortical 5-HT2 receptor binding observed in patients with Alzheimer's disease might be secondary to cholinergic deficits.
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MESH Headings
- 8-Hydroxy-2-(di-n-propylamino)tetralin/metabolism
- Acetylcholinesterase/metabolism
- Animals
- Antibodies, Monoclonal/pharmacology
- Autoradiography
- Cerebral Cortex/enzymology
- Cerebral Cortex/metabolism
- Cholinergic Fibers/drug effects
- Cholinergic Fibers/metabolism
- Dihydroalprenolol/metabolism
- Immunotoxins/pharmacology
- Isotope Labeling
- Ketanserin/metabolism
- Male
- N-Glycosyl Hydrolases
- Prazosin/metabolism
- Presynaptic Terminals/drug effects
- Presynaptic Terminals/metabolism
- Prosencephalon/drug effects
- Prosencephalon/immunology
- Prosencephalon/metabolism
- Radioligand Assay
- Rats
- Rats, Wistar
- Receptor, Serotonin, 5-HT2A
- Receptors, Adrenergic, alpha/drug effects
- Receptors, Adrenergic, alpha/metabolism
- Receptors, Adrenergic, alpha-1/metabolism
- Receptors, Adrenergic, alpha-2/metabolism
- Receptors, Adrenergic, beta/drug effects
- Receptors, Adrenergic, beta/metabolism
- Receptors, Presynaptic/drug effects
- Receptors, Presynaptic/metabolism
- Receptors, Serotonin/drug effects
- Receptors, Serotonin/metabolism
- Receptors, Serotonin, 5-HT1
- Ribosome Inactivating Proteins, Type 1
- Saporins
- Tritium
- Yohimbine/metabolism
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Affiliation(s)
- M Heider
- Paul Flechsig Institute for Brain Research, University Leipzig, Germany
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11
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Fischer H, Schwechheimer K, Heider M, Bernhardt S, Zang KD. Establishment and characterization of a human glioblastoma cell line with a stable karyotype and nullisomy 13. Cancer Genet Cytogenet 1985; 17:257-68. [PMID: 2988753 DOI: 10.1016/0165-4608(85)90017-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A permanent cell line (HeRo) with a stable karyotype (80-84,XXYY) and with defined numerical and structural chromosome aberrations was established from a human glioblastoma, a highly malignant brain tumor. Transformation of these cells with SV40 led to a second permanent cell line (HeRo-SV) with a reduced, but also stable, karyotype (72-74,XXYY). The morphological appearance of the glioblastoma line was similar to the main component of the original tumor tissue. The transformed cells differed from their counterparts in accelerated growth, enhanced growth in soft agar, reduced growth conditions, expression of SV40 T antigen, and altered epitheloid morphology. Both cell lines have been grown in continuous culture for more than 2 years. The stability of both the biologic properties and the karyotypic changes induced by SV40 is quite remarkable. Both lines show a nullisomy 13.
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Early L, Heider M. Set up a media exchange. Health Care Educ 1977; 6:17-9. [PMID: 10306250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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13
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Heider M. Bed and bored: hospital patients and professionals alike would benefit from an educational resource group. Biomed Commun 1977; 5:24, 26-9. [PMID: 10314813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Farr WC, Heider M. Medical education workshops. A study of their influence on teaching behavior of medical college faculty. Ohio State Med J 1974; 70:102-5. [PMID: 4811439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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