1
|
Paloschi V, Pauli J, Winski G, Wu Z, Li Z, Botti L, Meucci S, Conti P, Rogowitz F, Glukha N, Hummel N, Busch A, Chernogubova E, Jin H, Sachs N, Eckstein HH, Dueck A, Boon RA, Bausch AR, Maegdefessel L. Utilization of an Artery-on-a-Chip to Unravel Novel Regulators and Therapeutic Targets in Vascular Diseases. Adv Healthc Mater 2024; 13:e2302907. [PMID: 37797407 DOI: 10.1002/adhm.202302907] [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: 08/31/2023] [Revised: 09/18/2023] [Indexed: 10/07/2023]
Abstract
In this study, organ-on-chip technology is used to develop an in vitro model of medium-to-large size arteries, the artery-on-a-chip (AoC), with the objective to recapitulate the structure of the arterial wall and the relevant hemodynamic forces affecting luminal cells. AoCs exposed either to in vivo-like shear stress values or kept in static conditions are assessed to generate a panel of novel genes modulated by shear stress. Considering the crucial role played by shear stress alterations in carotid arteries affected by atherosclerosis (CAD) and abdominal aortic aneurysms (AAA) disease development/progression, a patient cohort of hemodynamically relevant specimens is utilized, consisting of diseased and non-diseased (internal control) vessel regions from the same patient. Genes activated by shear stress follow the same expression pattern in non-diseased segments of human vessels. Single cell RNA sequencing (scRNA-seq) enables to discriminate the unique cell subpopulations between non-diseased and diseased vessel portions, revealing an enrichment of flow activated genes in structural cells originating from non-diseased specimens. Furthermore, the AoC served as a platform for drug-testing. It reproduced the effects of a therapeutic agent (lenvatinib) previously used in preclinical AAA studies, therefore extending the understanding of its therapeutic effect through a multicellular structure.
Collapse
Affiliation(s)
- Valentina Paloschi
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- German Center for Cardiovascular Research DZHK, Partner Site Munich Heart Alliance, 80336, Berlin, Germany
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- German Center for Cardiovascular Research DZHK, Partner Site Munich Heart Alliance, 80336, Berlin, Germany
| | - Greg Winski
- Department of Medicine, Cardiovascular Unit, Karolinska Institute, 171 77, Stockholm, Sweden
| | - Zhiyuan Wu
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- Department of Vascular Surgery, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing, 10073, P. R. China
| | - Zhaolong Li
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Lorenzo Botti
- Department of Engineering and Applied Sciences, University of Bergamo, Bergamo, 24129, Italy
| | - Sandro Meucci
- Micronit Microtechnologies, Enschede, 15 7521, The Netherlands
| | - Pierangelo Conti
- Department of Engineering and Applied Sciences, University of Bergamo, Bergamo, 24129, Italy
| | | | - Nadiya Glukha
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Nora Hummel
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Albert Busch
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- Division of Vascular and Endovascular Surgery, Department for Visceral, Thoracic and Vascular Surgery, Medical Faculty Carl Gustav Carus and University Hospital, Technical University Dresden, 01069, Dresden, Germany
| | - Ekaterina Chernogubova
- Department of Medicine, Cardiovascular Unit, Karolinska Institute, 171 77, Stockholm, Sweden
| | - Hong Jin
- Department of Medicine, Cardiovascular Unit, Karolinska Institute, 171 77, Stockholm, Sweden
| | - Nadja Sachs
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Hans-Henning Eckstein
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
| | - Anne Dueck
- German Center for Cardiovascular Research DZHK, Partner Site Munich Heart Alliance, 80336, Berlin, Germany
- Institute of Pharmacology and Toxicology, Technical University of Munich, 80333, Munich, Germany
| | - Reinier A Boon
- Department of Physiology, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, VU University Medical Center, Amsterdam, 1081 HV, The Netherlands
- Institute of Cardiovascular Regeneration, Center of Molecular Medicine, Goethe-University, 60323, Frankfurt, Germany
- German Center for Cardiovascular Research DZHK, Partner Site Frankfurt Rhine-Main, 10785, Berlin, Germany
| | - Andreas R Bausch
- Department of Cellular Biophysics, Technical University of Munich, 80333, Munich, Germany
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Technical University of Munich, 80333, Munich, Germany
- German Center for Cardiovascular Research DZHK, Partner Site Munich Heart Alliance, 80336, Berlin, Germany
- Department of Medicine, Cardiovascular Unit, Karolinska Institute, 171 77, Stockholm, Sweden
| |
Collapse
|
2
|
Fidler TP, Dunbar A, Kim E, Hardaway B, Pauli J, Xue C, Abramowicz S, Xiao T, O’Connor K, Sachs N, Wang N, Maegdefessel L, Levine R, Reilly M, Tall AR. Suppression of IL-1β promotes beneficial accumulation of fibroblast-like cells in atherosclerotic plaques in clonal hematopoiesis. Nat Cardiovasc Res 2024; 3:60-75. [PMID: 38362011 PMCID: PMC10868728 DOI: 10.1038/s44161-023-00405-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 11/30/2023] [Indexed: 02/17/2024]
Abstract
Clonal hematopoiesis (CH) is an independent risk factor for atherosclerotic cardiovascular disease. Murine models of CH suggest a central role of inflammasomes and IL-1β in accelerated atherosclerosis and plaque destabilization. Here we show using single-cell RNA sequencing in human carotid plaques that inflammasome components are enriched in macrophages, while the receptor for IL-1β is enriched in fibroblasts and smooth muscle cells (SMCs). To address the role of inflammatory crosstalk in features of plaque destabilization, we conducted SMC fate mapping in Ldlr-/- mice modeling Jak2VF or Tet2 CH treated with IL-1β antibodies. Unexpectedly, this treatment minimally affected SMC differentiation, leading instead to a prominent expansion of fibroblast-like cells. Depletion of fibroblasts from mice treated with IL-1β antibody resulted in thinner fibrous caps. Conversely, genetic inactivation of Jak2VF during plaque regression promoted fibroblast accumulation and fibrous cap thickening. Our studies suggest that suppression of inflammasomes promotes plaque stabilization by recruiting fibroblast-like cells to the fibrous cap.
Collapse
Affiliation(s)
- Trevor P. Fidler
- Division of Molecular Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
- Cardiovascular Research Institute, University of California San Francisco, San Francisco, CA, USA
- Department of Physiology, University of San Francisco, San Francisco, CA, USA
| | - Andrew Dunbar
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Eunyoung Kim
- Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Brian Hardaway
- Division of Molecular Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Jessica Pauli
- Department of Vascular and Endovascular Surgery, Technical University Munich, Munich, Germany
- German Center for Cardiovascular Research (DZHK), Munich, Germany
| | - Chenyi Xue
- Department of Vascular and Endovascular Surgery, Technical University Munich, Munich, Germany
| | - Sandra Abramowicz
- Division of Molecular Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Tong Xiao
- Division of Molecular Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Kavi O’Connor
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Nadja Sachs
- Department of Vascular and Endovascular Surgery, Technical University Munich, Munich, Germany
- German Center for Cardiovascular Research (DZHK), Munich, Germany
| | - Nan Wang
- Division of Molecular Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Lars Maegdefessel
- Department of Vascular and Endovascular Surgery, Technical University Munich, Munich, Germany
- German Center for Cardiovascular Research (DZHK), Munich, Germany
- Department of Medicine, Karolinska Institute, Stockholm, Sweden
| | - Ross Levine
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Muredach Reilly
- Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
- Irving Institute for Clinical and Translational Research, Columbia University Irving Medical Center, New York, NY, USA
| | - Alan R. Tall
- Division of Molecular Medicine, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| |
Collapse
|
3
|
Fasolo F, Winski G, Li Z, Wu Z, Winter H, Ritzer J, Glukha N, Roy J, Hultgren R, Pauli J, Busch A, Sachs N, Knappich C, Eckstein HH, Boon RA, Paloschi V, Maegdefessel L. The circular RNA Ataxia Telangiectasia Mutated regulates oxidative stress in smooth muscle cells in expanding abdominal aortic aneurysms. Mol Ther Nucleic Acids 2023; 33:848-865. [PMID: 37680984 PMCID: PMC10481153 DOI: 10.1016/j.omtn.2023.08.017] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 08/14/2023] [Indexed: 09/09/2023]
Abstract
An abdominal aortic aneurysm (AAA) is a pathological widening of the aortic wall characterized by loss of smooth muscle cells (SMCs), extracellular matrix degradation, and local inflammation. This condition is often asymptomatic until rupture occurs, leading to high morbidity and mortality rates. Diagnosis is mostly accidental and the only currently available treatment option remains surgical intervention. Circular RNAs (circRNAs) represent a novel class of regulatory non-coding RNAs that originate from backsplicing. Their highly stable loop structure, combined with a remarkable enrichment in body fluids, make circRNAs promising disease biomarkers. We investigated the contribution of circRNAs to AAA pathogenesis and their potential application to improve AAA diagnostics. Gene expression analysis revealed the presence of deregulated circular transcripts stemming from AAA-relevant gene loci. Among these, the circRNA to the Ataxia Telangiectasia Mutated gene (cATM) was upregulated in human AAA specimens, in AAA-derived SMCs, and serum samples collected from aneurysm patients. In primary aortic SMCs, cATM increased upon angiotensin II and doxorubicin stimulation, while its silencing triggered apoptosis. Higher cATM levels made AAA-derived SMCs less vulnerable to oxidative stress, compared with control SMCs. These data suggest that cATM contributes to elicit an adaptive oxidative-stress response in SMCs and provides a reliable AAA disease signature.
Collapse
Affiliation(s)
- Francesca Fasolo
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
| | - Greg Winski
- Department of Medicine, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Zhaolong Li
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
| | - Zhiyan Wu
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
- Department of Vascular Surgery, Beijing Hospital, National Center of Gerontology and Institute of Geriatric Medicine, Chinese Academy of Medical Science, Beijing 100730, P.R. China
| | - Hanna Winter
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
| | - Julia Ritzer
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
| | - Nadiya Glukha
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
| | - Joy Roy
- Department of Molecular Medicine and Surgery, Karolinska Institutet, 17176 Stockholm, Sweden
- Department of Vascular Surgery, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Rebecka Hultgren
- Department of Molecular Medicine and Surgery, Karolinska Institutet, 17176 Stockholm, Sweden
- Department of Vascular Surgery, Karolinska University Hospital, 17176 Stockholm, Sweden
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
| | - Albert Busch
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery, Medical Faculty, Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, 01307 Dresden, Germany
| | - Nadja Sachs
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
| | - Christoph Knappich
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
| | - Hans-Henning Eckstein
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
| | - Reinier A. Boon
- German Center for Cardiovascular Research DZHK 10785 Berlin, Partner Site Frankfurt Rhine-Main, Frankfurt am Main, Germany
- Institute of Cardiovascular Regeneration, Goethe University, 60590 Frankfurt am Main, Germany
- Amsterdam UMC Location Vrije Universiteit Amsterdam, Physiology, 1081 Amsterdam, the Netherlands
- Amsterdam Cardiovascular Sciences, Microcirculation, 1081 Amsterdam, the Netherlands
| | - Valentina Paloschi
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
- Department of Medicine, Karolinska Institutet, 17177 Stockholm, Sweden
| |
Collapse
|
4
|
Pauli J, Reisenauer T, Winski G, Sachs N, Chernogubova E, Freytag H, Otto C, Reeps C, Eckstein HH, Scholz CJ, Maegdefessel L, Busch A. Apolipoprotein E (ApoE) Rescues the Contractile Smooth Muscle Cell Phenotype in Popliteal Artery Aneurysm Disease. Biomolecules 2023; 13:1074. [PMID: 37509110 PMCID: PMC10377618 DOI: 10.3390/biom13071074] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/22/2023] [Accepted: 06/28/2023] [Indexed: 07/30/2023] Open
Abstract
Popliteal artery aneurysm (PAA) is the most frequent peripheral aneurysm, primarily seen in male smokers with a prevalence below 1%. This exploratory study aims to shed light on cellular mechanisms involved in PAA progression. Sixteen human PAA and eight non-aneurysmatic popliteal artery samples, partially from the same patients, were analyzed by immunohistochemistry, fluorescence imaging, Affymetrix mRNA expression profiling, qPCR and OLink proteomics, and compared to atherosclerotic (n = 6) and abdominal aortic aneurysm (AAA) tissue (n = 19). Additionally, primary cell culture of PAA-derived vascular smooth muscle cells (VSMC) was established for modulation and growth analysis. Compared to non-aneurysmatic popliteal arteries, VSMCs lose the contractile phenotype and the cell proliferation rate increases significantly in PAA. Array analysis identified APOE higher expressed in PAA samples, co-localizing with VSMCs. APOE stimulation of primary human PAA VSMCs significantly reduced cell proliferation. Accordingly, contractile VSMC markers were significantly upregulated. A single case of osseous mechanically induced PAA with a non-diseased VSMC profile emphasizes these findings. Carefully concluded, PAA pathogenesis shows similar features to AAA, yet the mechanisms involved might differ. APOE is specifically higher expressed in PAA tissue and could be involved in VSMC phenotype rescue.
Collapse
Affiliation(s)
- Jessica Pauli
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
| | - Tessa Reisenauer
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
| | - Greg Winski
- Molecular Vascular Medicine Group, Center for Molecular Medicine, Karolinska Institute, 17177 Stockholm, Sweden
- Perioperative Medicine and Intensive Care, Karolinska University Hospital, 17177 Stockholm, Sweden
| | - Nadja Sachs
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
| | - Ekaterina Chernogubova
- Molecular Vascular Medicine Group, Center for Molecular Medicine, Karolinska Institute, 17177 Stockholm, Sweden
| | - Hannah Freytag
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
| | - Christoph Otto
- Department of General, Visceral, Transplantation, Vascular & Pediatric Surgery, University Hospital Würzburg, 97080 Würzburg, Germany
| | - Christian Reeps
- Division of Vascular and Endovascular Surgery, Department for Visceral, Thoracic and Vascular Surgery, Medical Faculty Carl Gustav Carus and University Hospital, Technische Universität Dresden, 01307 Dresden, Germany
| | - Hans-Henning Eckstein
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
| | | | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, 10785 Berlin, Germany
- Molecular Vascular Medicine Group, Center for Molecular Medicine, Karolinska Institute, 17177 Stockholm, Sweden
| | - Albert Busch
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, 81675 Munich, Germany
- Division of Vascular and Endovascular Surgery, Department for Visceral, Thoracic and Vascular Surgery, Medical Faculty Carl Gustav Carus and University Hospital, Technische Universität Dresden, 01307 Dresden, Germany
| |
Collapse
|
5
|
Bink DI, Pauli J, Maegdefessel L, Boon RA. Endothelial microRNAs and long noncoding RNAs in cardiovascular ageing. Atherosclerosis 2023; 374:99-106. [PMID: 37059656 DOI: 10.1016/j.atherosclerosis.2023.03.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/24/2023] [Accepted: 03/28/2023] [Indexed: 04/16/2023]
Abstract
Atherosclerosis and numerous other cardiovascular diseases develop in an age-dependent manner. The endothelial cells that line the vessel walls play an important role in the development of atherosclerosis. Non-coding RNA like microRNAs and long non-coding RNAs are known to play an important role in endothelial function and are implicated in the disease progression. Here, we summarize several microRNAs and long non-coding RNAs that are known to have an altered expression with endothelial aging and discuss their role in endothelial cell function and senescence. These processes contribute to aging-induced atherosclerosis development and by targeting the non-coding RNAs controlling endothelial cell function and senescence, atherosclerosis can potentially be attenuated.
Collapse
Affiliation(s)
- Diewertje I Bink
- Department of Physiology, Amsterdam University Medical Centers, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Microcirculation, Amsterdam, the Netherlands
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Munich, Germany; German Centre for Cardiovascular Research (DZHK), Partner site Munich Heart Alliance, Munich, Germany
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Munich, Germany; German Centre for Cardiovascular Research (DZHK), Partner site Munich Heart Alliance, Munich, Germany; Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Reinier A Boon
- Department of Physiology, Amsterdam University Medical Centers, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Microcirculation, Amsterdam, the Netherlands; Institute for Cardiovascular Regeneration, Centre for Molecular Medicine, Goethe University Frankfurt am Main, Frankfurt am Main, Germany; German Centre for Cardiovascular Research DZHK, Partner site Frankfurt Rhein/Main, Frankfurt Am Main, Germany.
| |
Collapse
|
6
|
Zhang W, Zhao J, Deng L, Ishimwe N, Pauli J, Wu W, Shan S, Kempf W, Ballantyne MD, Kim D, Lyu Q, Bennett M, Rodor J, Turner AW, Lu YW, Gao P, Choi M, Warthi G, Kim HW, Barroso MM, Bryant WB, Miller CL, Weintraub NL, Maegdefessel L, Miano JM, Baker AH, Long X. INKILN is a Novel Long Noncoding RNA Promoting Vascular Smooth Muscle Inflammation via Scaffolding MKL1 and USP10. Circulation 2023. [PMID: 37199168 DOI: 10.1161/circulationaha.123.063760] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
BACKGROUND Activation of vascular smooth muscle cell (VSMC) inflammation is vital to initiate vascular disease. The role of human-specific long noncoding RNAs in VSMC inflammation is poorly understood. METHODS Bulk RNA sequencing in differentiated human VSMCs revealed a novel human-specific long noncoding RNA called inflammatory MKL1 (megakaryoblastic leukemia 1) interacting long noncoding RNA (INKILN). INKILN expression was assessed in multiple in vitro and ex vivo models of VSMC phenotypic modulation as well as human atherosclerosis and abdominal aortic aneurysm. The transcriptional regulation of INKILN was verified through luciferase reporter and chromatin immunoprecipitation assays. Loss-of-function and gain-of-function studies and multiple RNA-protein and protein-protein interaction assays were used to uncover a mechanistic role of INKILN in the VSMC proinflammatory gene program. Bacterial artificial chromosome transgenic mice were used to study INKILN expression and function in ligation injury-induced neointimal formation. RESULTS INKILN expression is downregulated in contractile VSMCs and induced in human atherosclerosis and abdominal aortic aneurysm. INKILN is transcriptionally activated by the p65 pathway, partially through a predicted NF-κB (nuclear factor kappa B) site within its proximal promoter. INKILN activates proinflammatory gene expression in cultured human VSMCs and ex vivo cultured vessels. INKILN physically interacts with and stabilizes MKL1, a key activator of VSMC inflammation through the p65/NF-κB pathway. INKILN depletion blocks interleukin-1β-induced nuclear localization of both p65 and MKL1. Knockdown of INKILN abolishes the physical interaction between p65 and MKL1 and the luciferase activity of an NF-κB reporter. Furthermore, INKILN knockdown enhances MKL1 ubiquitination through reduced physical interaction with the deubiquitinating enzyme USP10 (ubiquitin-specific peptidase 10). INKILN is induced in injured carotid arteries and exacerbates ligation injury-induced neointimal formation in bacterial artificial chromosome transgenic mice. CONCLUSIONS These findings elucidate an important pathway of VSMC inflammation involving an INKILN/MKL1/USP10 regulatory axis. Human bacterial artificial chromosome transgenic mice offer a novel and physiologically relevant approach for investigating human-specific long noncoding RNAs under vascular disease conditions.
Collapse
Affiliation(s)
- Wei Zhang
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Jinjing Zhao
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
- Department of Molecular and Cellular Physiology, Albany Medical College, NY (J.Z., W.W., Y.W.L., P.G., M.C., M.M.B., X.L.)
| | - Lin Deng
- Centre for Cardiovascular Science, University of Edinburgh, Scotland (L.D., M.D.B., M.B., J.R., A.H.B.)
| | - Nestor Ishimwe
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (J.P., W.K., L.M.)
| | - Wen Wu
- Department of Molecular and Cellular Physiology, Albany Medical College, NY (J.Z., W.W., Y.W.L., P.G., M.C., M.M.B., X.L.)
| | - Shengshuai Shan
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Wolfgang Kempf
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (J.P., W.K., L.M.)
| | - Margaret D Ballantyne
- Centre for Cardiovascular Science, University of Edinburgh, Scotland (L.D., M.D.B., M.B., J.R., A.H.B.)
| | - David Kim
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Qing Lyu
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Matthew Bennett
- Centre for Cardiovascular Science, University of Edinburgh, Scotland (L.D., M.D.B., M.B., J.R., A.H.B.)
| | - Julie Rodor
- Centre for Cardiovascular Science, University of Edinburgh, Scotland (L.D., M.D.B., M.B., J.R., A.H.B.)
| | - Adam W Turner
- Centre for Cardiovascular Science, University of Edinburgh, Scotland (L.D., M.D.B., M.B., J.R., A.H.B.)
- Center for Public Health Genomics, University of Virginia, Charlottesville. (A.W.T., C.L.M.)
| | - Yao Wei Lu
- Department of Molecular and Cellular Physiology, Albany Medical College, NY (J.Z., W.W., Y.W.L., P.G., M.C., M.M.B., X.L.)
| | - Ping Gao
- Department of Molecular and Cellular Physiology, Albany Medical College, NY (J.Z., W.W., Y.W.L., P.G., M.C., M.M.B., X.L.)
| | - Mihyun Choi
- Department of Molecular and Cellular Physiology, Albany Medical College, NY (J.Z., W.W., Y.W.L., P.G., M.C., M.M.B., X.L.)
| | - Ganesh Warthi
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Ha Won Kim
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Margarida M Barroso
- Department of Molecular and Cellular Physiology, Albany Medical College, NY (J.Z., W.W., Y.W.L., P.G., M.C., M.M.B., X.L.)
| | - William B Bryant
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Clint L Miller
- Center for Public Health Genomics, University of Virginia, Charlottesville. (A.W.T., C.L.M.)
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville. (C.L.M.)
| | - Neal L Weintraub
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (J.P., W.K., L.M.)
- German Center for Cardiovascular Research (DZHK, partner site Munich), Germany (L.M.)
- Department of Medicine, Karolinska Institute, Stockholm, Sweden (L.M.)
| | - Joseph M Miano
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
| | - Andrew H Baker
- Centre for Cardiovascular Science, University of Edinburgh, Scotland (L.D., M.D.B., M.B., J.R., A.H.B.)
| | - Xiaochun Long
- Vascular Biology Center, Medical College of Georgia at Augusta University (W.Z., N.I., S.S., D.K., Q.L., G.W., H.W.K., W.B.B., N.L.W., J.M.M., X.L.)
- Department of Molecular and Cellular Physiology, Albany Medical College, NY (J.Z., W.W., Y.W.L., P.G., M.C., M.M.B., X.L.)
| |
Collapse
|
7
|
Zhang W, Zhao J, Deng L, Ishimwe N, Pauli J, Wu W, Shan S, Kempf W, Ballantyne MD, Kim D, Lyu Q, Bennett M, Rodor J, Turner AW, Lu YW, Gao P, Choi M, Warthi G, Kim HW, Barroso MM, Bryant WB, Miller CL, Weintraub NL, Maegdefessel L, Miano JM, Baker AH, Long X. INKILN is a novel long noncoding RNA promoting vascular smooth muscle inflammation via scaffolding MKL1 and USP10. bioRxiv 2023:2023.01.07.522948. [PMID: 36711681 PMCID: PMC9881896 DOI: 10.1101/2023.01.07.522948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Background Activation of vascular smooth muscle cells (VSMCs) inflammation is vital to initiate vascular disease. However, the role of human-specific long noncoding RNAs (lncRNAs) in VSMC inflammation is poorly understood. Methods Bulk RNA-seq in differentiated human VSMCs revealed a novel human-specific lncRNA called IN flammatory M K L1 I nteracting L ong N oncoding RNA ( INKILN ). INKILN expression was assessed in multiple in vitro and ex vivo models of VSMC phenotypic modulation and human atherosclerosis and abdominal aortic aneurysm (AAA) samples. The transcriptional regulation of INKILN was determined through luciferase reporter system and chromatin immunoprecipitation assay. Both loss- and gain-of-function approaches and multiple RNA-protein and protein-protein interaction assays were utilized to uncover the role of INKILN in VSMC proinflammatory gene program and underlying mechanisms. Bacterial Artificial Chromosome (BAC) transgenic (Tg) mice were utilized to study INKLIN expression and function in ligation injury-induced neointimal formation. Results INKILN expression is downregulated in contractile VSMCs and induced by human atherosclerosis and abdominal aortic aneurysm. INKILN is transcriptionally activated by the p65 pathway, partially through a predicted NF-κB site within its proximal promoter. INKILN activates the proinflammatory gene expression in cultured human VSMCs and ex vivo cultured vessels. Mechanistically, INKILN physically interacts with and stabilizes MKL1, a key activator of VSMC inflammation through the p65/NF-κB pathway. INKILN depletion blocks ILIβ-induced nuclear localization of both p65 and MKL1. Knockdown of INKILN abolishes the physical interaction between p65 and MKL1, and the luciferase activity of an NF-κB reporter. Further, INKILN knockdown enhances MKL1 ubiquitination, likely through the reduced physical interaction with the deubiquitinating enzyme, USP10. INKILN is induced in injured carotid arteries and exacerbates ligation injury-induced neointimal formation in BAC Tg mice. Conclusions These findings elucidate an important pathway of VSMC inflammation involving an INKILN /MKL1/USP10 regulatory axis. Human BAC Tg mice offer a novel and physiologically relevant approach for investigating human-specific lncRNAs under vascular disease conditions.
Collapse
|
8
|
Pauli J, Wu Z, Yokota C, Winski G, Paloschi V, Dueck A, Engelhardt S, Eckstein HH, Reilly M, Maegdefessel L. Single-cell and spatially resolved transcriptome analysis reveals cellular heterogeneities and novel regulators of atherosclerotic plaque destabilization. Atherosclerosis 2022. [DOI: 10.1016/j.atherosclerosis.2022.06.322] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
9
|
Pauli J, Wu Z, Yokota C, Winski G, Paloschi V, Dueck A, Engelhardt S, Eckstein HH, Reilly MP, Maegdefessel L. Abstract 216: Single-cell And Spatially Resolved Transcriptome Analysis Reveals Cellular Heterogeneities And Novel Regulators Of Atherosclerotic Plaque Destabilization. Arterioscler Thromb Vasc Biol 2022. [DOI: 10.1161/atvb.42.suppl_1.216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Background:
Cardiovascular diseases, including atherosclerosis, are the major cause of death in western societies, still molecular mechanisms of plaque destabilization remain unclear. Long non-coding RNAs (lncRNAs) are one example of novel molecular modulators, as their expression is highly cell-type specific.
Methods:
We utilized combined total (bulk) RNA and single cell (sc) RNA to study the transcriptome of advanced carotid artery lesions from patients undergoing carotid endarterectomy in our vascular surgery clinic. Additionally, we performed hybridization-based RNA
in situ
sequencing (HybRISS) to indicate where cluster-defining genes are located within the plaques.
Results:
In this current study, four sequencing datasets were investigated (total RNA from early vs. late lesions from the same individual patient and unstable vs. stable lesions from individual patients; two separate scRNA-seq datasets).16 lncRNAs were cross-referenced between all four datasets. All of these lncRNAs presented a cell-type specific expression pattern, with 11 lncRNAs being significantly enriched in different smooth muscle cell (SMC) clusters. We found all newly identified lncRNAs conserved in our scRNA-seq datasets of genetically mutated (
LDLR-/-
) Yucatan mini-pigs and the inducible carotid artery plaque rupture mice (
ApoE-/-
). The cluster-defining genes from the human scRNA-seq data were then located in human carotid artery tissue sections using the HybRISS method to unravel their distinct location within these plaques.
Discussion:
Taken together, our datasets, methods and different animal-models demonstrate that combining bulk with scRNA-seq data and spatially resolved sequencing methods are powerful tools to identify and characterize novel lncRNAs being expressed by a certain cell-type in the disease progression.
Collapse
Affiliation(s)
| | - Zhiyuan Wu
- Technical Univ Munich, 80802 Munich, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Reisenauer T, Pauli J, Paloschi V, Chernogubova E, Scholz C, Reeps C, Eckstein HH, Maegdefessel L, Busch A. Abstract 353: Phenotypic Switching Of Vascular Smooth Muscle Cells Is Regulated By ApoE And A Potential Therapeutic Target In Popliteal Aneurysms. Arterioscler Thromb Vasc Biol 2022. [DOI: 10.1161/atvb.42.suppl_1.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Introduction:
Popliteal artery aneurysm (PAA) is an individually highly fatal disease, causing ischemia and eventual major amputation, mainly in 50-70-year-old males. It is the most frequent peripheral artery aneurysm and correct treatment is challenging for clinicians, since both open and endovascular repair have only modest success rates, depending on the clinical presentation. In comparison to other aneurysm entities, little is known about its specific pathogenesis.
Material and Methods:
26 Human PAA and popliteal artery samples were analyzed by immunohistochemistry, mRNA and miRNA expression analysis and targeted proteomics (OLink platform) to identify key features of the disease and crucial pathways involved. Additionally, a primary cell culture of PAA specimen was established for in-vitro vascular smooth muscle cell (VSMC) modulation.
Results:
VSMCs lose their contractile phenotype along with significant inflammatory and proteolytic changes in the vessel wall architecture. Extensive tissue remodeling with high cell turnover rates (as indicated by Ki67+ cells) compared to non-diseased popliteal artery is a unique feature in comparison to AAA. This correlates with highly abundant co-expression of the apolipoproteins E and CI with Ki67 in VSMCs in double immune-fluorescent stains. Stimulation of VSMCs with external APOE or APOCI alters proliferation rates and significantly changes a subset of contractile markers proteins upon gene expression analysis. These findings are emphasized by a specific case of a solely mechanically induced PAA in a young male.
Conclusion:
Pathogenesis of PAA shows similar histologic features than AAA, yet differs in key pathways involved. Increased cell turnover in the aneurysm neck area suggests evaluation of alternative treatment strategies, i.e., targeting key processes of pathogenesis such as angiogenesis and cell turnover.
Collapse
|
11
|
Cunningham S, Pauli J. Fetal lung adenocarcinoma (low-grade) – A case report of local recurrence. Pathology 2022. [DOI: 10.1016/j.pathol.2021.12.130] [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: 11/25/2022]
|
12
|
Fasolo F, Jin H, Winski G, Chernogubova E, Pauli J, Winter H, Li DY, Glukha N, Bauer S, Metschl S, Wu Z, Koschinsky ML, Reilly M, Pelisek J, Kempf W, Eckstein HH, Soehnlein O, Matic L, Hedin U, Bäcklund A, Bergmark C, Paloschi V, Maegdefessel L. Long Noncoding RNA MIAT Controls Advanced Atherosclerotic Lesion Formation and Plaque Destabilization. Circulation 2021; 144:1567-1583. [PMID: 34647815 PMCID: PMC8570347 DOI: 10.1161/circulationaha.120.052023] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Supplemental Digital Content is available in the text. Long noncoding RNAs (lncRNAs) are important regulators of biological processes involved in vascular tissue homeostasis and disease development. The present study assessed the functional contribution of the lncRNA myocardial infarction-associated transcript (MIAT) to atherosclerosis and carotid artery disease.
Collapse
Affiliation(s)
- Francesca Fasolo
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | - Hong Jin
- Department of Medicine (H.J., G.W., E.C., A.B.), Karolinska Institutet, Stockholm, Sweden.,Department of Molecular Medicine and Surgery (H.J., L. Matic, U.H., C.B., L. Maegdefessel), Karolinska Institutet, Stockholm, Sweden
| | - Greg Winski
- Department of Medicine (H.J., G.W., E.C., A.B.), Karolinska Institutet, Stockholm, Sweden
| | - Ekaterina Chernogubova
- Department of Medicine (H.J., G.W., E.C., A.B.), Karolinska Institutet, Stockholm, Sweden
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | - Hanna Winter
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | - Daniel Y Li
- Department of Cardiology, Columbia University Medical Center, New York, NY (D.Y.L., M.R.)
| | - Nadiya Glukha
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | - Sabine Bauer
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | - Susanne Metschl
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | - Zhiyuan Wu
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | | | - Muredach Reilly
- Department of Cardiology, Columbia University Medical Center, New York, NY (D.Y.L., M.R.)
| | - Jaroslav Pelisek
- Department of Vascular Surgery, University Hospital Zurich, Switzerland (J. Pelisek)
| | - Wolfgang Kempf
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | - Hans-Henning Eckstein
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | - Oliver Soehnlein
- Department of Experimental Pathology, Westphalian Wilhelms University, Munster, Germany (O.S.).,Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden (O.S.).,Institute for Cardiovascular Prevention, Ludwig Maximilian University of Munich, Germany (O.S.)
| | - Ljubica Matic
- Department of Molecular Medicine and Surgery (H.J., L. Matic, U.H., C.B., L. Maegdefessel), Karolinska Institutet, Stockholm, Sweden
| | - Ulf Hedin
- Department of Molecular Medicine and Surgery (H.J., L. Matic, U.H., C.B., L. Maegdefessel), Karolinska Institutet, Stockholm, Sweden
| | - Alexandra Bäcklund
- Department of Medicine (H.J., G.W., E.C., A.B.), Karolinska Institutet, Stockholm, Sweden
| | - Claes Bergmark
- Department of Molecular Medicine and Surgery (H.J., L. Matic, U.H., C.B., L. Maegdefessel), Karolinska Institutet, Stockholm, Sweden
| | - Valentina Paloschi
- German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel)
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich, Germany (F.F., J. Pauli, H.W., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,German Center for Cardiovascular Research (DZHK), Berlin, Germany; partner site Munich Heart Alliance (F.F., J. Pauli, H.W., F.F., N.G., S.B., S.M., Z.W., W.K., H.-H.E., V.P., L. Maegdefessel).,Department of Molecular Medicine and Surgery (H.J., L. Matic, U.H., C.B., L. Maegdefessel), Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
13
|
Pauli J, Ramírez A, Crasselt C, Schmidt W, Resch-Genger U. Utilizing optical spectroscopy and 2',7'-difluorofluorescein to characterize the early stages of cement hydration. Methods Appl Fluoresc 2021; 10. [PMID: 34619671 DOI: 10.1088/2050-6120/ac2da0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 10/07/2021] [Indexed: 10/20/2022]
Abstract
The increasingly sophisticated nature of modern, more environmentally friendly cementitious binders requires a better understanding and control particularly of the complex, dynamic processes involved in the early phase of cement hydration. In-situ monitoring of properties of a constantly changing system over a defined period of time calls for simple, sensitive, fast, and preferably also non-invasive methods like optical spectroscopy. Here, we exploit the time-dependent changes in the absorbance and fluorescence features of the negatively charged optical probe 2',7'-difluorofluorescein (DFFL) for the study of the hydration processes in pastes of white cement (WC), cubic tricalcium aluminate (C3A), and tricalcium silicate (C3S), the main phases of cement, and in pastes of quartz (Q) over 24 h after addition of the dye solution. For comparison, also conventional techniques like isothermal heat flow calorimetry were applied. Based upon the time-dependent changes in the spectroscopic properties of DFFL, that seem to originate mainly from dye aggregation and dye-surface interactions and considerably vary between the different pastes, molecular pictures of the hydration processes in the cement pastes are derived. Our results clearly demonstrate the potential of optical spectroscopy, i.e., diffuse reflectance, steady state and time-resolved fluorometry in conjunction with suitable optical reporters, to probe specific hydration processes and to contribute to a better understanding of the early hydration processes of cement at the molecular scale.
Collapse
Affiliation(s)
- J Pauli
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstaetter Str. 11, D-12489 Berlin, Germany
| | - A Ramírez
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstaetter Str. 11, D-12489 Berlin, Germany.,Division Technology of Con-struc-ti-on Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, D-12205 Berlin, Germany
| | - C Crasselt
- Division Technology of Con-struc-ti-on Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, D-12205 Berlin, Germany
| | - W Schmidt
- Division Technology of Con-struc-ti-on Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, D-12205 Berlin, Germany
| | - U Resch-Genger
- Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstaetter Str. 11, D-12489 Berlin, Germany
| |
Collapse
|
14
|
Bischoff L, Pauli J, Paloschi V, Maegdefessel L. Abstract MP18: Mitochondrial Inducing Factor 1 Affects Stabilization Of Advanced Atherosclerotic Lesions In Carotid Artery Disease. Arterioscler Thromb Vasc Biol 2021. [DOI: 10.1161/atvb.41.suppl_1.mp18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Whereas cerebrovascular diseases, most and foremost ischemic events, being the second most deadliest disease as of today in the western world the process behind carotid artery plaque (CAP) vulnerability remains understood insufficiently. Through proteomic analysis of blood serum from patients treated for atherosclerotic lesions in carotid arteries we were able to determine proteins of potential relevance to CAP stability. One of the identified targets is mitochondrial apoptosis inducing factor 1 (AIFM1), which we found upregulated in serum profiles from patients with vulnerable atherosclerotic lesions. The study were conducted with human vascular tissue and blood samples from the 'Munich Vascular Biobank'. Proteomic profiling of serum was performed using the platform OLink (Uppsala, Sweden) taken from patients with either stable (n=53) or unstable (n=53) CAPs. Furthermore, gene expression of AIFM1 in stable (n=5) and unstable (n=3) CAPs was assessed via RT-qPCR .Via Immunostaining the regions showing higher expression of AIFM1 within the plaques (n=10) were determined and put in perspective with markers of cell types predominantly accumulated in those regions. In addition, blood monocyte-derived macrophages were stimulated with different factors and changes in expression of AIFM1 was assessed. With the proteomic sequencing of blood sera, higher levels of AIFM1 in patients with unstable versus stable CAP were determined. This trend was also seen assessing the gene expression of AIFM1 in the human vascular tissue. A significant enrichment of staining of AIFM1 positivity was observed in regions where apoptosis occured, such as the necrotic core and the shoulder regions of the advanced CAP. Furhtermore, AIFM1 enriched regions were identified as areas infiltrated by immune cells, especially macrophages. Monocytes of healthy donours showed an increased expression of AIFM1 when developed into macrophages. In conclusion AIFM1 was identified as a potential novel marker for advanced, unstable lesions in CAPs. Future studies (in vitro and in vivo) will reveal which role AIFM1 might play during processes that trigger CAP destabilization. Of further importance will be cell type expression patterns that we are also assessing in currently ongoing studies.
Collapse
|
15
|
Busch A, Pauli J, Winski G, Bleichert S, Chernogubova E, Metschl S, Winter H, Trenner M, Wiegering A, Otto C, Fischer J, Reiser J, Werner J, Roy J, Brostjan C, Knappich C, Eckstein HH, Paloschi V, Maegdefessel L. Lenvatinib halts aortic aneurysm growth by restoring smooth muscle cell contractility. JCI Insight 2021; 6:e140364. [PMID: 34185710 PMCID: PMC8410098 DOI: 10.1172/jci.insight.140364] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 06/24/2021] [Indexed: 11/17/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is a disease with high morbidity and mortality, especially when ruptured. The rationale of this study was to evaluate the repurposing of lenvatinib, a multi–tyrosine kinase inhibitor, in limiting experimental AAA growth targeting vascular smooth muscle cells (VSMCs) and angiogenesis. We applied systemic and local lenvatinib treatment to elastase-induced murine aortic aneurysms, and RNA profiling identified myosin heavy chain 11 (Myh11) as the most deregulated transcript. Daily oral treatment substantially reduced aneurysm formation in 2 independent mouse models. In addition, a large animal aneurysm model in hypercholesterolemic low-density lipoprotein receptor–knockout (LDLR–/–) Yucatan minipigs was applied to endovascularly deliver lenvatinib via drug-eluting balloons (DEBs). Here, a single local endovascular delivery blocked AAA progression successfully compared with a DEB-delivered control treatment. Reduced VSMC proliferation and a restored contractile phenotype were observed in animal tissues (murine and porcine), as well as AAA patient-derived cells. Apart from increasing MYH11 levels, lenvatinib reduced downstream ERK signaling. Hence, lenvatinib is a promising therapy to limit aortic aneurysm expansion upon local endovascular delivery. The tyrosine kinase inhibitor was able to positively affect pathways of key relevance to human AAA disease, even in a potentially new local delivery using DEBs.
Collapse
Affiliation(s)
- Albert Busch
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,German Center for Cardiovascular Research (DZHK), Berlin, Germany.,Division of Vascular and Endovascular Surgery, Department of Visceral, Thoracic and Vascular Surgery, Medical Faculty, Carl Gustav Carus and University Hospital Carl Gustav Carus Dresden, Technische Universität Dresden, Dresden, Germany
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,German Center for Cardiovascular Research (DZHK), Berlin, Germany
| | - Greg Winski
- Molecular Vascular Medicine Unit, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Sonja Bleichert
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna, Vienna General Hospital, Vienna, Austria
| | - Ekaterina Chernogubova
- Molecular Vascular Medicine Unit, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Susanne Metschl
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,German Center for Cardiovascular Research (DZHK), Berlin, Germany
| | - Hanna Winter
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,German Center for Cardiovascular Research (DZHK), Berlin, Germany
| | - Matthias Trenner
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Armin Wiegering
- Department of General, Visceral, Transplantation, Vascular & Pediatric Surgery (Department of Surgery I), University Hospital Würzburg, Würzburg, Germany
| | - Christoph Otto
- Department of General, Visceral, Transplantation, Vascular & Pediatric Surgery (Department of Surgery I), University Hospital Würzburg, Würzburg, Germany
| | - Johannes Fischer
- Centre of Preclinical Research, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Judith Reiser
- Centre of Preclinical Research, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Julia Werner
- Centre of Preclinical Research, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Joy Roy
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Christine Brostjan
- Division of Vascular Surgery, Department of General Surgery, Medical University of Vienna, Vienna General Hospital, Vienna, Austria
| | - Christoph Knappich
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Hans-Henning Eckstein
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Valentina Paloschi
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,German Center for Cardiovascular Research (DZHK), Berlin, Germany
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.,German Center for Cardiovascular Research (DZHK), Berlin, Germany.,Molecular Vascular Medicine Unit, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
16
|
Bauer S, Pauli J, Pelisek J. Optimized High Quality DNA Extraction from Formalin-Fixed Paraffin-Embedded Human Atherosclerotic Lesions. J Vis Exp 2021. [PMID: 33645556 DOI: 10.3791/61452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Formalin-fixed paraffin-embedded (FFPE) tissues represent a valuable source for molecular analyses and clinical genomic studies. These tissues are often poor in cells or difficult to process. Therefore, nucleic acids need to be carefully isolated. In recent years, various methods for DNA isolation have been established for tissues from many diseases, mostly cancer. Unfortunately, genomic DNA extracted from FFPE tissues is highly degraded due to the cross-linking between nucleic acid strands and proteins, as well as random breakings in sequence. Therefore, DNA quality from these samples is markedly reduced, making it a challenge for further molecular downstream analyses. Other problems with difficult tissues are, for example, the lack of cells in calcified human atherosclerotic lesions and fatty tissue, small skin biopsies, and consequently low availability of the desired nucleic acids as it is also the case in old or fixed tissues. In our laboratories, we have established a method for DNA extraction from formalin-fixed atherosclerotic lesions, using a semi-automated isolation system. We compared this method to other commercially available extraction protocols and focused on further downstream analyses. Purity and concentration of the DNA were measured by spectrometry and fluorometry. The degree of fragmentation and overall quality were assessed. The highest DNA quantity and quality was obtained with the modified blood DNA protocol for the automated extraction system, instead of the commercial FFPE protocol. With this step-by-step protocol, DNA yields from FFPE samples were in average four times higher and fewer specimens failed the extraction process, which is critical when dealing with small-vessel biopsies. Amplicon sizes from 200-800 bp could be detected by PCR. This study shows that although DNA obtained from our FFPE tissue is highly fragmented, it can still be used for successful amplification and sequencing of shorter products. In conclusion, in our hands, the automated technology appears to be the best system for DNA extraction, especially for small FFPE tissue specimen.
Collapse
Affiliation(s)
- Sabine Bauer
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich; partner site Munich Heart Alliance, Deutsches Zentrum für Herz-Kreislaufforschung (DZHK); Department of Experimental Cardiology, German Heart Centre, Technical University Munich;
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich; partner site Munich Heart Alliance, Deutsches Zentrum für Herz-Kreislaufforschung (DZHK)
| | - Jaroslav Pelisek
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technical University Munich; Department of Vascular Surgery, University Hospital Zurich
| |
Collapse
|
17
|
Kontos C, El Bounkari O, Krammer C, Sinitski D, Hille K, Zan C, Yan G, Wang S, Gao Y, Brandhofer M, Megens RTA, Hoffmann A, Pauli J, Asare Y, Gerra S, Bourilhon P, Leng L, Eckstein HH, Kempf WE, Pelisek J, Gokce O, Maegdefessel L, Bucala R, Dichgans M, Weber C, Kapurniotu A, Bernhagen J. Designed CXCR4 mimic acts as a soluble chemokine receptor that blocks atherogenic inflammation by agonist-specific targeting. Nat Commun 2020; 11:5981. [PMID: 33239628 PMCID: PMC7689490 DOI: 10.1038/s41467-020-19764-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 10/28/2020] [Indexed: 11/22/2022] Open
Abstract
Targeting a specific chemokine/receptor axis in atherosclerosis remains challenging. Soluble receptor-based strategies are not established for chemokine receptors due to their discontinuous architecture. Macrophage migration-inhibitory factor (MIF) is an atypical chemokine that promotes atherosclerosis through CXC-motif chemokine receptor-4 (CXCR4). However, CXCR4/CXCL12 interactions also mediate atheroprotection. Here, we show that constrained 31-residue-peptides ('msR4Ms') designed to mimic the CXCR4-binding site to MIF, selectively bind MIF with nanomolar affinity and block MIF/CXCR4 without affecting CXCL12/CXCR4. We identify msR4M-L1, which blocks MIF- but not CXCL12-elicited CXCR4 vascular cell activities. Its potency compares well with established MIF inhibitors, whereas msR4M-L1 does not interfere with cardioprotective MIF/CD74 signaling. In vivo-administered msR4M-L1 enriches in atherosclerotic plaques, blocks arterial leukocyte adhesion, and inhibits atherosclerosis and inflammation in hyperlipidemic Apoe-/- mice in vivo. Finally, msR4M-L1 binds to MIF in plaques from human carotid-endarterectomy specimens. Together, we establish an engineered GPCR-ectodomain-based mimicry principle that differentiates between disease-exacerbating and -protective pathways and chemokine-selectively interferes with atherosclerosis.
Collapse
MESH Headings
- Aged
- Animals
- Antigens, CD/metabolism
- Atherosclerosis/drug therapy
- Atherosclerosis/genetics
- Atherosclerosis/pathology
- Atherosclerosis/surgery
- Binding Sites
- Carotid Artery, Common/pathology
- Carotid Artery, Common/surgery
- Chemokine CXCL12/metabolism
- Crystallography, X-Ray
- Disease Models, Animal
- Drug Design
- Drug Evaluation, Preclinical
- Endarterectomy, Carotid
- Female
- Humans
- Intramolecular Oxidoreductases/antagonists & inhibitors
- Intramolecular Oxidoreductases/metabolism
- Macrophage Migration-Inhibitory Factors/antagonists & inhibitors
- Macrophage Migration-Inhibitory Factors/metabolism
- Male
- Mice
- Mice, Knockout, ApoE
- Middle Aged
- Peptide Fragments/pharmacology
- Peptide Fragments/therapeutic use
- Receptors, CXCR4/chemistry
- Receptors, CXCR4/metabolism
- Receptors, CXCR4/ultrastructure
- Sialyltransferases/metabolism
- Signal Transduction/drug effects
Collapse
Affiliation(s)
- Christos Kontos
- Division of Peptide Biochemistry, TUM School of Life Sciences, Technische Universität München (TUM), 85354, Freising, Germany
| | - Omar El Bounkari
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Christine Krammer
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Dzmitry Sinitski
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Kathleen Hille
- Division of Peptide Biochemistry, TUM School of Life Sciences, Technische Universität München (TUM), 85354, Freising, Germany
| | - Chunfang Zan
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Guangyao Yan
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Sijia Wang
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Ying Gao
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Markus Brandhofer
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Remco T A Megens
- Institute for Cardiovascular Prevention, Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 80336, Munich, Germany
| | - Adrian Hoffmann
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
- Department of Anaesthesiology, Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Jessica Pauli
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München (TUM), 81675, Munich, Germany
| | - Yaw Asare
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Simona Gerra
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Priscila Bourilhon
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
| | - Lin Leng
- Yale University School of Medicine, New Haven, CT, 06510, USA
| | - Hans-Henning Eckstein
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München (TUM), 81675, Munich, Germany
| | - Wolfgang E Kempf
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München (TUM), 81675, Munich, Germany
| | - Jaroslav Pelisek
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München (TUM), 81675, Munich, Germany
- Department of Vascular Surgery, University Hospital Zurich, 8091, Zurich, Switzerland
| | - Ozgun Gokce
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany
| | - Lars Maegdefessel
- Department for Vascular and Endovascular Surgery, Klinikum rechts der Isar, Technische Universität München (TUM), 81675, Munich, Germany
| | - Richard Bucala
- Yale University School of Medicine, New Haven, CT, 06510, USA
| | - Martin Dichgans
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany
| | - Christian Weber
- Institute for Cardiovascular Prevention, Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 80336, Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany
- Munich Heart Alliance, 80802, Munich, Germany
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, 6229, Maastricht, The Netherlands
| | - Aphrodite Kapurniotu
- Division of Peptide Biochemistry, TUM School of Life Sciences, Technische Universität München (TUM), 85354, Freising, Germany.
| | - Jürgen Bernhagen
- Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München, Ludwig-Maximilians-Universität (LMU) München, 81377, Munich, Germany.
- Munich Cluster for Systems Neurology (SyNergy), 81377, Munich, Germany.
- Munich Heart Alliance, 80802, Munich, Germany.
| |
Collapse
|
18
|
Pauli J, Tsantilas P, Kallmayer M, Maegdefessel L, Eckstein H, Pelisek J. Time-Dependent Biopathological Alternations In Carotid Atherosclerotic Plaques From Symptomatic Patients. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.831] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
19
|
Pelisek J, Hegenloh R, Bauer S, Metschl S, Pauli J, Glukha N, Busch A, Reutersberg B, Kallmayer M, Trenner M, Wendorff H, Tsantilas P, Schmid S, Knappich C, Schaeffer C, Stadlbauer T, Biro G, Wertern U, Meisner F, Stoklasa K, Menges AL, Radu O, Dallmann-Sieber S, Karlas A, Knipfer E, Reeps C, Zimmermann A, Maegdefessel L, Eckstein HH. Biobanking: Objectives, Requirements, and Future Challenges-Experiences from the Munich Vascular Biobank. J Clin Med 2019; 8:jcm8020251. [PMID: 30781475 PMCID: PMC6406278 DOI: 10.3390/jcm8020251] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 01/09/2019] [Revised: 02/01/2019] [Accepted: 02/12/2019] [Indexed: 12/13/2022] Open
Abstract
Collecting biological tissue samples in a biobank grants a unique opportunity to validate diagnostic and therapeutic strategies for translational and clinical research. In the present work, we provide our long-standing experience in establishing and maintaining a biobank of vascular tissue samples, including the evaluation of tissue quality, especially in formalin-fixed paraffin-embedded specimens (FFPE). Our Munich Vascular Biobank includes, thus far, vascular biomaterial from patients with high-grade carotid artery stenosis (n = 1567), peripheral arterial disease (n = 703), and abdominal aortic aneurysm (n = 481) from our Department of Vascular and Endovascular Surgery (January 2004–December 2018). Vascular tissue samples are continuously processed and characterized to assess tissue morphology, histological quality, cellular composition, inflammation, calcification, neovascularization, and the content of elastin and collagen fibers. Atherosclerotic plaques are further classified in accordance with the American Heart Association (AHA), and plaque stability is determined. In order to assess the quality of RNA from FFPE tissue samples over time (2009–2018), RNA integrity number (RIN) and the extent of RNA fragmentation were evaluated. Expression analysis was performed with two housekeeping genes—glyceraldehyde 3-phosphate dehydrogenase (GAPDH) and beta-actin (ACTB)—using TaqMan-based quantitative reverse-transcription polymerase chain reaction (qRT)-PCR. FFPE biospecimens demonstrated unaltered RNA stability over time for up to 10 years. Furthermore, we provide a protocol for processing tissue samples in our Munich Vascular Biobank. In this work, we demonstrate that biobanking is an important tool not only for scientific research but also for clinical usage and personalized medicine.
Collapse
Affiliation(s)
- Jaroslav Pelisek
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, 80636 Munich, Germany.
| | - Renate Hegenloh
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Sabine Bauer
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Susanne Metschl
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Jessica Pauli
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Nadiya Glukha
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Albert Busch
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Benedikt Reutersberg
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Michael Kallmayer
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Matthias Trenner
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Heiko Wendorff
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Pavlos Tsantilas
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Sofie Schmid
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Christoph Knappich
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Christoph Schaeffer
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Thomas Stadlbauer
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Gabor Biro
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Uta Wertern
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Franz Meisner
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Kerstin Stoklasa
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Anna-Leonie Menges
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Oksana Radu
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Sabine Dallmann-Sieber
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Angelos Karlas
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Eva Knipfer
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Christian Reeps
- University Centre for Vascular Medicine and Department of Vascular Surgery, University Hospital Carl Gustav Carus, Dresden University of Technology, 01307 Dresden, Germany.
| | - Alexander Zimmermann
- Department of Vascular and Endovascular Surgery, Technische Universität München, 81675 Munich, Germany.
| | - Lars Maegdefessel
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, 80636 Munich, Germany.
| | - Hans-Henning Eckstein
- DZHK (German Centre for Cardiovascular Research), Munich Heart Alliance, 80636 Munich, Germany.
| |
Collapse
|
20
|
Pereira B, Lucas G, da Rocha A, Pauli J, Ropelle E, Cintra D, de Souza C, Bueno C, da Silva A. Eccentric Exercise Leads to Glial Activation but not Apoptosis in Mice Spinal Cords. Int J Sports Med 2015; 36:378-85. [DOI: 10.1055/s-0034-1395589] [Citation(s) in RCA: 26] [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: 10/24/2022]
Affiliation(s)
- B. Pereira
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - G. Lucas
- Laboratory of Pain Neurobiology, Department of Physiology, Ribeirão Preto School of Medicine, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - A. da Rocha
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, Brazil
| | - J. Pauli
- Sport Sciences Course, Faculty of Applied Sciences, State University of Campinas (UNICAMP), Campinas, Brazil
| | - E. Ropelle
- Sport Sciences Course, Faculty of Applied Sciences, State University of Campinas (UNICAMP), Limeira, Brazil
| | - D. Cintra
- Sport Sciences Course, Faculty of Applied Sciences, State University of Campinas (UNICAMP), Limeira, Brazil
| | - C. de Souza
- Exercise Biochemistry and Physiology Laboratory Postgraduate Program in Health Sciences, Health Sciences Unit, University of Southern Santa Catarina, Criciúma, Brazil
| | - C. Bueno
- Human Genome Research Center, USP, SP, Brazil
| | - A. da Silva
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo (USP), Ribeirão Preto, Brazil
| |
Collapse
|
21
|
Hülscher M, Pauli J, Onken U. Influence of protein concentration on mechanical cell damage and fluidoynamics in airlift reactors for mammalian cell culture. FOOD BIOTECHNOL 2009. [DOI: 10.1080/08905439009549732] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- M. Hülscher
- a Fachbereich Chemietechnik, Lehrstuhl für Technische Chemie B , Universität Dortmund , Postfach 50 05 00, Dortmund 50 , D‐4600 , F.R. Germany
| | - J. Pauli
- a Fachbereich Chemietechnik, Lehrstuhl für Technische Chemie B , Universität Dortmund , Postfach 50 05 00, Dortmund 50 , D‐4600 , F.R. Germany
| | - U. Onken
- a Fachbereich Chemietechnik, Lehrstuhl für Technische Chemie B , Universität Dortmund , Postfach 50 05 00, Dortmund 50 , D‐4600 , F.R. Germany
| |
Collapse
|
22
|
Bieberle T, Pauli J, Bolz A, Schaldach M. Charakterisierung der Herzfrequenzvariabilität durch ein nichtlineares Modell. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1995.40.s1.251] [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: 11/15/2022]
|
23
|
Lisy MR, Görmar A, Pauli J, Resch-Genger U, Kaiser WA, Hilger I. In vivo NIRF-Bildgebung von Carcinoembryonales Antigen exprimierenden Tumoren. ROFO-FORTSCHR RONTG 2007. [DOI: 10.1055/s-2007-977047] [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: 10/21/2022]
|
24
|
Raupach C, Pauli J, Mierke C, Fabry B. Correlated particle motion in an endothelial cell monolayer. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)85402-3] [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: 11/29/2022]
|
25
|
Koch T, Nguyen T, Pauli J, Mierke C, Butler J, Fredberg J, Fabry B. Force generated by the isolated smooth muscle cell in a three-dimensional collagen gel. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)83874-1] [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: 10/24/2022]
|
26
|
Mierke C, Kollmannsberger P, Pauli J, Fabry B. Increased cytoskeletal dynamics of invasive vs. non-invasive tumor cells. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)83849-2] [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: 10/24/2022]
|
27
|
van Rossum BJ, Castellani F, Rehbein K, Pauli J, Oschkinat H. Assignment of the nonexchanging protons of the alpha-spectrin SH3 domain by two- and three-dimensional 1H-13C solid-state magic-angle spinning NMR and comparison of solution and solid-state proton chemical shifts. Chembiochem 2001; 2:906-14. [PMID: 11948879 DOI: 10.1002/1439-7633(20011203)2:12<906::aid-cbic906>3.0.co;2-m] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [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: 11/09/2022]
Abstract
The assignment of nonexchanging protons of a small microcrystalline protein, the alpha-spectrin SH3 domain (7.2 kDa, 62 residues), was achieved by means of three-dimensional (3D) heteronuclear (1H-13C-13C) magic-angle spinning (MAS) NMR dipolar correlation spectroscopy. With the favorable combination of a high B(0)-field, a moderately high spinning frequency, and frequency-switched Lee-Goldburg irradiation applied during 1H evolution, a proton linewidth < or =0.5 ppm at 17.6 Tesla was achieved for the particular protein preparation used. A comparison of the solid-state 1H chemical shifts with the shifts found in solution shows a remarkable similarity, which reflects the identical protein structures in solution and in the solid. Significant differences between the MAS solid- and liquid-state 1H chemical shifts are only observed for residues that are located at the surface of the protein and that exhibit contacts between different SH3 molecules. In two cases, aromatic residues of neighboring SH3 molecules induce pronounced upfield ring-current shifts for protons in the contact area.
Collapse
Affiliation(s)
- B J van Rossum
- Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Strasse 10, 13125 Berlin, Germany.
| | | | | | | | | |
Collapse
|
28
|
Pauli J, Baldus M, van Rossum B, de Groot H, Oschkinat H. Backbone and side-chain 13C and 15N signal assignments of the alpha-spectrin SH3 domain by magic angle spinning solid-state NMR at 17.6 Tesla. Chembiochem 2001. [PMID: 11828455 DOI: 10.1002/1439-7633(20010401)2:4<272∷aid-cbic272>3.0.co;2-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2023]
Abstract
The backbone and side-chain 13C and 15N signals of a solid 62-residue (u-13C,15N)-labelled protein containing the alpha-spectrin SH3 domain were assigned by two-dimensional (2D) magic angle spinning (MAS) 15N-13C and 13C-13C dipolar correlation spectroscopy at 17.6 T. The side-chain signal sets of the individual amino acids were identified by 2D 13C-13C proton-driven spin diffusion and dipolar recoupling experiments. Correlations to the respective backbone nitrogen signals were established by 2D NCACX (CX=any carbon atom) experiments, which contain a proton-nitrogen and a nitrogen-carbon cross-polarisation step followed by a carbon-carbon homonuclear transfer unit. Interresidue correlations leading to sequence-specific assignments were obtained from 2D NCOCX experiments. The assignment is nearly complete for the SH3 domain residues 7-61, while the signals of the N- and C-terminal residues 1-6 and 62, respectively, outside the domain boundaries are not detected in our MAS spectra. The resolution observed in these spectra raises expectations that receptor-bound protein ligands and slightly larger proteins (up to 20 kDa) can be readily assigned in the near future by using three-dimensional versions of the applied or analogous techniques.
Collapse
Affiliation(s)
- J Pauli
- Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Strasse 10, 13125 Berlin, Germany
| | | | | | | | | |
Collapse
|
29
|
Pauli J, Baldus M, van Rossum B, de Groot H, Oschkinat H. Backbone and side-chain 13C and 15N signal assignments of the alpha-spectrin SH3 domain by magic angle spinning solid-state NMR at 17.6 Tesla. Chembiochem 2001; 2:272-81. [PMID: 11828455 DOI: 10.1002/1439-7633(20010401)2:4<272::aid-cbic272>3.0.co;2-2] [Citation(s) in RCA: 274] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The backbone and side-chain 13C and 15N signals of a solid 62-residue (u-13C,15N)-labelled protein containing the alpha-spectrin SH3 domain were assigned by two-dimensional (2D) magic angle spinning (MAS) 15N-13C and 13C-13C dipolar correlation spectroscopy at 17.6 T. The side-chain signal sets of the individual amino acids were identified by 2D 13C-13C proton-driven spin diffusion and dipolar recoupling experiments. Correlations to the respective backbone nitrogen signals were established by 2D NCACX (CX=any carbon atom) experiments, which contain a proton-nitrogen and a nitrogen-carbon cross-polarisation step followed by a carbon-carbon homonuclear transfer unit. Interresidue correlations leading to sequence-specific assignments were obtained from 2D NCOCX experiments. The assignment is nearly complete for the SH3 domain residues 7-61, while the signals of the N- and C-terminal residues 1-6 and 62, respectively, outside the domain boundaries are not detected in our MAS spectra. The resolution observed in these spectra raises expectations that receptor-bound protein ligands and slightly larger proteins (up to 20 kDa) can be readily assigned in the near future by using three-dimensional versions of the applied or analogous techniques.
Collapse
Affiliation(s)
- J Pauli
- Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Strasse 10, 13125 Berlin, Germany
| | | | | | | | | |
Collapse
|
30
|
Pauli J, van Rossum B, Förster H, de Groot HJ, Oschkinat H. Sample optimization and identification of signal patterns of amino acid side chains in 2D RFDR spectra of the alpha-spectrin SH3 domain. J Magn Reson 2000; 143:411-6. [PMID: 10729269 DOI: 10.1006/jmre.2000.2029] [Citation(s) in RCA: 91] [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] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Future structural investigations of proteins by solid-state CPMAS NMR will rely on uniformly labeled protein samples showing spectra with an excellent resolution. NMR samples of the solid alpha-spectrin SH3 domain were generated in four different ways, and their (13)C CPMAS spectra were compared. The spectrum of a [u-(13)C, (15)N]-labeled sample generated by precipitation shows very narrow (13)C signals and resolved scalar carbon-carbon couplings. Linewidths of 16-19 Hz were found for the three alanine C(beta )signals of a selectively labeled [70% 3-(13)C]alanine-enriched SH3 sample. The signal pattern of the isoleucine, of all prolines, valines, alanines, and serines, and of three of the four threonines were identified in 2D (13)C-(13)C RFDR spectra of the [u-(13)C, (15)N]-labeled SH3 sample. A comparison of the (13)C chemical shifts of the found signal patterns with the (13)C assignment obtained in solution shows an intriguing match.
Collapse
Affiliation(s)
- J Pauli
- Forschungsinstitut für Molekulare Pharmakologie, Alfred-Kowalke-Strasse 4, Berlin, D-10315, Germany
| | | | | | | | | |
Collapse
|
31
|
Abstract
Previous research has indicated that the developing brain is vulnerable to the effects of alcohol exposure. Most of this research has used an experimental design in which animals where chronically subjected to alcohol for a lengthy period of time during gestation and/or the preweaning period. Recent evidence has indicated that the morphology of the brain and the subsequent behaviour of the animal may also be susceptible to alcohol administered for a short duration during specified periods of development. Wistar rats were exposed to 7.5 g/kg body weight of ethanol administered as a 10% solution via an intragastric cannula over an 8 h period either on the 5th (PND5) or the 10th (PND10) postnatal day of age. Gastrostomy controls received a 5% sucrose solution substituted isocalorically for the ethanol. Another set of pups raised by their mother were used as 'suckle controls'. All surgical procedures were carried out under halothane vapour anaesthesia. After the artificial feeding regimes all pups were returned to lactating dams and weaned at 21 days of age. The spatial learning ability of these rats was tested in the Morris water maze when they were between 41-54 days of age. This task requires the rats to swim in a pool containing water made opaque and locate and climb onto a submerged platform. The time taken to accomplish this is known as the "escape latency." Each rat was subjected to 24 trials over three days and a further trial on each of days 4 and 11 of the test period. Statistical analysis of the escape latency data revealed that both the PND5 and PND10 ethanol treated groups had significant deficits in their spatial learning ability compared with the control groups. However, there was no significant difference in the degree of impairment between the PND5 and PND10 rats. It is concluded that even short periods of alcohol exposure during brain development can cause lasting impairment of spatial learning behaviour in rats.
Collapse
Affiliation(s)
- J Pauli
- Department of Anatomical Sciences, University of Queensland, St Lucia, Australia
| | | | | |
Collapse
|
32
|
Pauli J, Wilce P, Bedi KS. Acute exposure to alcohol during early postnatal life causes a deficit in the total number of cerebellar Purkinje cells in the rat. J Comp Neurol 1995; 360:506-12. [PMID: 8543655 DOI: 10.1002/cne.903600311] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.8] [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: 01/31/2023]
Abstract
Alcohol taken regularly over a lengthy period of time has been claimed to cause the loss of neurons in both the adult and developing brain. However, it remains uncertain whether acute, as opposed to chronic, exposure to alcohol at specified periods can also cause disruption in the neuronal population of the developing brain. This question was investigated by exposing Wistar rat pups to 7.5 g/kg body weight of ethanol administered as a 10% solution via an intragastric cannula over an 8 hour period either on the 5th (PND5) or the 10th (PND10) postnatal day of age. Gastrostomy controls received a 5% sucrose solution substituted isocalorically for the ethanol. Another set of pups raised by their mothers was used as "suckle controls." All surgical procedures were carried out under halothane vapour anaesthesia. After the artificial feeding regimes, all pups were returned to the lactating dams and weaned at 21 days of age. Between 52 and 54 days of age, the rats were anaesthetised with an intraperitoneal injection with Nembutal and killed by intracardiac perfusion with 3% glutaraldehyde in 0.1 M phosphate buffer. The relatively unbiased stereological procedure known as the "fractionator" method was used to estimate the total number of Purkinje cells in the cerebellum of each animal. The Purkinje cell nucleolus was used as the counting unit; it was assumed that each Purkinje cell contained only one nucleolus. PND10 ethanol-treated rats and gastrostomy and suckle controls had between about 210,000-232,000 Purkinje cells in the cerebellum. However, the PND5 ethanol-treated rats had only about 137,000 Purkinje cells.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- J Pauli
- Department of Anatomical Sciences, University of Queensland, St. Lucia, Australia
| | | | | |
Collapse
|
33
|
|
34
|
|
35
|
Hoebbel D, Ebert R, Pauli J, Kruschke D. �ber den Einflu� von Temperatur und Fremdionen auf Eigenschaften und Bau der Natriumwasserglasl�sungen. Z Anorg Allg Chem 1992. [DOI: 10.1002/zaac.19926140817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
36
|
Dimitrov A, Rüdiger S, Pauli J. Influence of an asymmetrical centre on the signal structure in the 19F-NMR spectra of F-cyclohexyl ethers and aminoethers. J Fluor Chem 1992. [DOI: 10.1016/s0022-1139(00)80737-x] [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: 10/18/2022]
|
37
|
Pauli J, Radeck W, Rüdiger S, Siegemund G. 2D-19F-NMR Investigations of chloro-fluoro-2-methyldioxanes. J Fluor Chem 1992. [DOI: 10.1016/s0022-1139(00)80838-6] [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: 10/17/2022]
|
38
|
Pauli J, Onken U, Sobolik V. Electrodiffusional direction-specific probe for measuring local velocity of aerated aqueous systems. J APPL ELECTROCHEM 1991. [DOI: 10.1007/bf01041449] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
39
|
|
40
|
Riesel L, Pauli J, Porzel A, Il'in EG. Imidodiphosphors�uretetraphenylester als Ligand in Fluorokomplexen 2. Fluorokomplexe des Phosphors. Z Anorg Allg Chem 1989. [DOI: 10.1002/zaac.19895710113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
41
|
Riesel L, Pauli J, Buslaev JA, Il'in EG, Ignatov ME. Imidodiphosphors�uretetraphenylester als Ligand in Fluorokomplexen. 1. Fluorokomplexe des Titans. Z Anorg Allg Chem 1988. [DOI: 10.1002/zaac.19885630120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
42
|
Pauli J, Riesel L, Ilyin E, Buslaev Y. Interaction of covalent fluorides and imidodiphosphoric acid tetraphenyl ester. J Fluor Chem 1985. [DOI: 10.1016/s0022-1139(00)83281-9] [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: 10/18/2022]
|
43
|
Pauli J, v. Platen H. Zonarbau in Baryten. Naturwissenschaften 1971. [DOI: 10.1007/bf00624740] [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: 11/29/2022]
|