1
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Rodewald M, Rautiainen JM, Görls H, Oilunkaniemi R, Weigand W, Laitinen RS. Formation, Characterization, and Bonding of cis- and trans-[PtCl 2{Te(CH 2) 6} 2], cis-trans-[Pt 3Cl 6{Te(CH 2) 6} 4], and cis- trans-[Pt 4Cl 8{Te(CH 2) 6} 4]: Experimental and DFT Study. Molecules 2023; 28:7551. [PMID: 38005273 PMCID: PMC10673514 DOI: 10.3390/molecules28227551] [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: 10/16/2023] [Revised: 11/04/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023] Open
Abstract
[PtCl2{Te(CH2)6}2] (1) was synthesized from the cyclic telluroether Te(CH2)6 and cis-[PtCl2(NCPh)2] in dichloromethane at room temperature under the exclusion of light. The crystal structure determination showed that in the solid state, 1 crystallizes as yellow plate-like crystals of the cis-isomer 1cis and the orange-red interwoven needles of 1trans. The crystals could be separated under the microscope. NMR experiments showed that upon dissolution of the crystals of 1cis in CDCl3, it isomerizes and forms a dynamic equilibrium with the trans-isomer 1trans that becomes the predominant species. Small amounts of cis-trans-[Pt3Cl6{Te(CH2)6}4] (2) and cis-trans-[Pt4Cl8{Te(CH2)6}4] (3) were also formed and structurally characterized. Both compounds show rare bridging telluroether ligands and two different platinum coordination environments, one exhibiting a cis-Cl/cis-Te(CH2)6 arrangement and the other a trans-Cl/trans-Te(CH2)6 arrangement. Complex 2 has an open structure with two terminal and two bridging telluroether ligands, whereas complex 3 has a cyclic structure with four Te(CH2)6 bridging ligands. The bonding and formation of the complexes have been discussed through the use of DFT calculations combined with QTAIM analysis. The recrystallization of the mixture of the 1:1 reaction from d6-DMSO afforded [PtCl2{S(O)(CD3)2}{Te(CH2)6}] (4) that could also be characterized both structurally and spectroscopically.
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Affiliation(s)
- Marko Rodewald
- Institute for Inorganic and Analytical Chemistry, Friedrich Schiller University of Jena, Humboldt Str. 8, 07743 Jena, Germany; (M.R.); (H.G.)
| | - J. Mikko Rautiainen
- Department of Chemistry and Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland;
| | - Helmar Görls
- Institute for Inorganic and Analytical Chemistry, Friedrich Schiller University of Jena, Humboldt Str. 8, 07743 Jena, Germany; (M.R.); (H.G.)
| | - Raija Oilunkaniemi
- Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland;
| | - Wolfgang Weigand
- Institute for Inorganic and Analytical Chemistry, Friedrich Schiller University of Jena, Humboldt Str. 8, 07743 Jena, Germany; (M.R.); (H.G.)
| | - Risto S. Laitinen
- Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland;
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2
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Niestrawska JA, Rodewald M, Schultz C, Quansah E, Meyer-Zedler T, Schmitt M, Popp J, Tomasec I, Ondruschka B, Hammer N. Morpho-mechanical mapping of human dura mater microstructure. Acta Biomater 2023; 170:86-96. [PMID: 37598794 DOI: 10.1016/j.actbio.2023.08.024] [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: 05/31/2023] [Revised: 07/20/2023] [Accepted: 08/11/2023] [Indexed: 08/22/2023]
Abstract
The human dura mater is known to impact vastly traumatic brain injury mechanopathology. In spite of this involvement, dura mater is typically neglected in computational and physical human head models. The lack of location-dependent microstructural and related mechanical data of dura mater may be considered a rationale behind this simplification. The anisotropic nature of dura mater under various loading conditions so far remains unelucidated. Furthermore, principal collagen fiber orientation is yet to be quantified for a morpho-mechanically-informed material model on the dura mater. This study aims to assess how location-dependent mechanical anisotropy is linked to principal collagen fiber orientation. Uniaxial extension tests were performed in a heated tissue bath for 60 samples from six individuals and correlated to the three-dimensional collagen structure in four individuals using second-harmonic generation (SHG) imaging. Failure stress and stretch at failure, elastic modulus, and a microstructurally motivated material model were integrated to examine local differences in dura mater morpho-mechanics. The quantitative observation of collagen fiber orientation and dispersion confirmed that collagen is highly aligned in the human dura mater and that both fiber orientation and dispersion differ depending on the location investigated. This observation provides a possible explanation for the previously observed isotropic mechanical behavior, as the main collagen fiber direction is not oriented along the anterior-posterior or medial-lateral direction at most of the mapped locations. Additionally, these site-dependent structural properties have implications for the mechanical load response and therefore potentially for the regional functions dura mater has to fulfill. The here chosen non-symmetrical fiber dispersion material model fits the data well and provides a comprehensive parameter base for further studies and future finite element models. STATEMENT OF SIGNIFICANCE: The human dura mater greatly affects traumatic brain injury mechanisms, but it is often ignored in computational and physical head models. This is because there is a lack of detailed microstructural and mechanical data specific to the dura mater. Its anisotropic nature and collagen fiber orientation have not been fully understood, hindering the development of an accurate material model. Hence, this study combines morphological data on collagen fiber orientation and dispersion at multiple locations of human cranial dura mater, and links microstructure to location-specific load-displacement behavior. It provides microstructurally informed mechanical information towards realistic head models for predicting location-dependent tissue behavior and failure for assessing brain injury and graft material development.
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Affiliation(s)
- Justyna Anna Niestrawska
- Division of Macroscopic and Clinical Anatomy Gottfried Schatz Research Center, Medical University of Graz, Austria.
| | - Marko Rodewald
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Jena Germany; Institute of Physical Chemistry (IPC) and Abbe Center of Photonics (ACP), Friedrich Schiller University Jena, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Jena, Germany
| | - Constanze Schultz
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Jena Germany
| | - Elsie Quansah
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Jena Germany; Institute of Physical Chemistry (IPC) and Abbe Center of Photonics (ACP), Friedrich Schiller University Jena, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Jena, Germany
| | - Tobias Meyer-Zedler
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Jena Germany
| | - Michael Schmitt
- Institute of Physical Chemistry (IPC) and Abbe Center of Photonics (ACP), Friedrich Schiller University Jena, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Jena, Germany
| | - Jürgen Popp
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Jena Germany; Institute of Physical Chemistry (IPC) and Abbe Center of Photonics (ACP), Friedrich Schiller University Jena, Member of the Leibniz Centre for Photonics in Infection Research (LPI), Jena, Germany
| | - Igor Tomasec
- Division of Macroscopic and Clinical Anatomy Gottfried Schatz Research Center, Medical University of Graz, Austria
| | - Benjamin Ondruschka
- Institute of Legal Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Niels Hammer
- Division of Macroscopic and Clinical Anatomy Gottfried Schatz Research Center, Medical University of Graz, Austria; Department of Orthopaedic and Trauma Surgery University of Leipzig, Leipzig, Germany; Fraunhofer IWU, Dresden, Germany
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3
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Bae H, Rodewald M, Meyer-Zedler T, Bocklitz TW, Matz G, Messerschmidt B, Press AT, Bauer M, Guntinas-Lichius O, Stallmach A, Schmitt M, Popp J. Feasibility studies of multimodal nonlinear endoscopy using multicore fiber bundles for remote scanning from tissue sections to bulk organs. Sci Rep 2023; 13:13779. [PMID: 37612362 PMCID: PMC10447453 DOI: 10.1038/s41598-023-40944-6] [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: 06/08/2023] [Accepted: 08/18/2023] [Indexed: 08/25/2023] Open
Abstract
Here, we report on the development and application of a compact multi-core fiber optical probe for multimodal non-linear imaging, combining the label-free modalities of Coherent Anti-Stokes Raman Scattering, Second Harmonic Generation, and Two-Photon Excited Fluorescence. Probes of this multi-core fiber design avoid moving and voltage-carrying parts at the distal end, thus providing promising improved compatibility with clinical requirements over competing implementations. The performance characteristics of the probe are established using thin cryo-sections and artificial targets before the applicability to clinically relevant samples is evaluated using ex vivo bulk human and porcine intestine tissues. After image reconstruction to counteract the data's inherently pixelated nature, the recorded images show high image quality and morpho-chemical conformity on the tissue level compared to multimodal non-linear images obtained with a laser-scanning microscope using a standard microscope objective. Furthermore, a simple yet effective reconstruction procedure is presented and demonstrated to yield satisfactory results. Finally, a clear pathway for further developments to facilitate a translation of the multimodal fiber probe into real-world clinical evaluation and application is outlined.
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Affiliation(s)
- Hyeonsoo Bae
- Leibniz Institute of Photonic Technology (Leibniz IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), PO Box 100239, 07702, Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Center for Sepsis Control and Care (CSCC), Jena University Hospital, Erlanger Allee 101, 07747, Jena, Germany
| | - Marko Rodewald
- Leibniz Institute of Photonic Technology (Leibniz IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), PO Box 100239, 07702, Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Tobias Meyer-Zedler
- Leibniz Institute of Photonic Technology (Leibniz IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), PO Box 100239, 07702, Jena, Germany
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Thomas W Bocklitz
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Gregor Matz
- GRINTECH GmbH, Schillerstraße 1, 07745, Jena, Germany
| | | | - Adrian T Press
- Center for Sepsis Control and Care (CSCC), Jena University Hospital, Erlanger Allee 101, 07747, Jena, Germany
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany
- Medical Faculty, Friedrich-Schiller University Jena, Kastanienstr. 1, 07747, Jena, Germany
| | - Michael Bauer
- Center for Sepsis Control and Care (CSCC), Jena University Hospital, Erlanger Allee 101, 07747, Jena, Germany
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany
| | - Orlando Guntinas-Lichius
- Department of Otorhinolaryngology, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany
| | - Andreas Stallmach
- Department of Internal Medicine IV, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany
| | - Michael Schmitt
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Juergen Popp
- Leibniz Institute of Photonic Technology (Leibniz IPHT), Member of Leibniz Health Technologies, Member of the Leibniz Centre for Photonics in Infection Research (LPI), PO Box 100239, 07702, Jena, Germany.
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany.
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4
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Klemm P, Solomun JI, Rodewald M, Kuchenbrod MT, Hänsch VG, Richter F, Popp J, Hertweck C, Hoeppener S, Bonduelle C, Lecommandoux S, Traeger A, Schubert S. Efficient Gene Delivery of Tailored Amphiphilic Polypeptides by Polyplex Surfing. Biomacromolecules 2022; 23:4718-4733. [PMID: 36269943 DOI: 10.1021/acs.biomac.2c00919] [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: 11/30/2022]
Abstract
Within this study, an amphiphilic and potentially biodegradable polypeptide library based on poly[(4-aminobutyl)-l-glutamine-stat-hexyl-l-glutamine] [P(AB-l-Gln-stat-Hex-l-Gln)] was investigated for gene delivery. The influence of varying proportions of aliphatic and cationic side chains affecting the physicochemical properties of the polypeptides on transfection efficiency was investigated. A composition of 40 mol% Hex-l-Gln and 60 mol % AB-l-Gln (P3) was identified as best performer over polypeptides with higher proportions of protonatable monomers. Detailed studies of the transfection mechanism revealed the strongest interaction of P3 with cell membranes, promoting efficient endocytic cell uptake and high endosomal release. Spectrally, time-, and z-resolved fluorescence microscopy further revealed the crucial role of filopodia surfing in polyplex-cell interaction and particle internalization in lamellipodia regions, followed by rapid particle transport into cells. This study demonstrates the great potential of polypeptides for gene delivery. The amphiphilic character improves performance over cationic homopolypeptides, and the potential biodegradability is advantageous toward other synthetic polymeric delivery systems.
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Affiliation(s)
- Paul Klemm
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Jana I Solomun
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Marko Rodewald
- Leibniz Institute for Photonic Technology Jena, Member of Leibniz Health Technologies, Albert-Einstein-Strasse 9, 07745 Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Lessingstrasse 10, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Maren T Kuchenbrod
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Veit G Hänsch
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstrasse 11a, 07745 Jena, Germany
| | - Friederike Richter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Jürgen Popp
- Leibniz Institute for Photonic Technology Jena, Member of Leibniz Health Technologies, Albert-Einstein-Strasse 9, 07745 Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Lessingstrasse 10, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Christian Hertweck
- Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstrasse 11a, 07745 Jena, Germany
| | - Stephanie Hoeppener
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Colin Bonduelle
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, F-33600 Pessac, France
| | | | - Anja Traeger
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
| | - Stephanie Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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5
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Rodewald M, Bae H, Huschke S, Meyer-Zedler T, Schmitt M, Press AT, Schubert S, Bauer M, Popp J. In vivo coherent anti-Stokes Raman scattering microscopy reveals vitamin A distribution in the liver. J Biophotonics 2021; 14:e202100040. [PMID: 33720518 DOI: 10.1002/jbio.202100040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/10/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
Here we present a microscope setup for coherent anti-Stokes Raman scattering (CARS) imaging, devised to specifically address the challenges of in vivo experiments. We exemplify its capabilities by demonstrating how CARS microscopy can be used to identify vitamin A (VA) accumulations in the liver of a living mouse, marking the positions of hepatic stellate cells (HSCs). HSCs are the main source of extracellular matrix protein after hepatic injury and are therefore the main target of novel nanomedical strategies in the development of a treatment for liver fibrosis. Their role in the VA metabolism makes them an ideal target for a CARS-based approach as they store most of the body's VA, a class of compounds sharing a retinyl group as a structural motive, a moiety that is well known for its exceptionally high Raman cross section of the C═C stretching vibration of the conjugated backbone.
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Affiliation(s)
- Marko Rodewald
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Jena, Germany
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Jena, Germany
| | - Hyeonsoo Bae
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Jena, Germany
| | - Sophie Huschke
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Tobias Meyer-Zedler
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Jena, Germany
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Jena, Germany
| | - Michael Schmitt
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Jena, Germany
| | - Adrian Tibor Press
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
- Faculty of Medicine, Friedrich Schiller University, Jena, Germany
| | - Stephanie Schubert
- Institute of Pharmacy, Department of Pharmaceutical Technology and Biopharmacy, Friedrich Schiller University, Jena, Germany
| | - Michael Bauer
- Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Jena, Germany
- Center for Sepsis Control and Care, Jena University Hospital, Jena, Germany
| | - Juergen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University, Jena, Germany
- Leibniz Institute of Photonic Technology, Member of Leibniz Health Technologies, Jena, Germany
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6
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Klemm P, Huschke S, Rodewald M, Ehteshamzad N, Behnke M, Wang X, Cinar G, Nischang I, Hoeppener S, Weber C, Press AT, Höppener C, Meyer T, Deckert V, Schmitt M, Popp J, Bauer M, Schubert S. Characterization of a library of vitamin A-functionalized polymethacrylate-based nanoparticles for siRNA delivery. Polym Chem 2021. [DOI: 10.1039/d0py01626h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A 60-membered library of vitamin A-functionalized P(MMA-stat-DMAEMA)-b-PPEGMA block copolymers was synthesized by RAFT polymerization. From these, nanoparticles containing genetic material were formulated and fully characterized.
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7
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Rodewald M, Rautiainen JM, Niksch T, Görls H, Oilunkaniemi R, Weigand W, Laitinen RS. Front Cover: Chalcogen‐Bonding Interactions in Telluroether Heterocycles [Te(CH
2
)
m
]
n
(
n=
1–4;
m=
3–7) (Chem. Eur. J. 61/2020). Chemistry 2020. [DOI: 10.1002/chem.202003452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marko Rodewald
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldt Strasse 8 07743 Jena Germany
| | - J. Mikko Rautiainen
- Department of Chemistry, Nanoscience Center University of Jyväskylä P.O. Box 35 40014 Jyväskylä Finland
| | - Tobias Niksch
- Klinik für Nuklearmedizin Universitätsklinikum Jena Am Klinikum 1 07747 Jena Germany
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldt Strasse 8 07743 Jena Germany
| | - Raija Oilunkaniemi
- Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering University of Oulu P.O. Box 3000 90014 Oulu Finland
| | - Wolfgang Weigand
- Institut für Anorganische und Analytische Chemie Friedrich-Schiller-Universität Jena Humboldt Strasse 8 07743 Jena Germany
| | - Risto S. Laitinen
- Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering University of Oulu P.O. Box 3000 90014 Oulu Finland
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Rodewald M, Rautiainen JM, Niksch T, Görls H, Oilunkaniemi R, Weigand W, Laitinen RS. Chalcogen-Bonding Interactions in Telluroether Heterocycles [Te(CH 2 ) m ] n (n=1-4; m=3-7). Chemistry 2020; 26:13806-13818. [PMID: 32608024 PMCID: PMC7702089 DOI: 10.1002/chem.202002510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Indexed: 12/01/2022]
Abstract
The Te⋅⋅⋅Te secondary bonding interactions (SBIs) in solid cyclic telluroethers were explored by preparing and structurally characterizing a series of [Te(CH2 )m ]n (n=1-4; m=3-7) species. The SBIs in 1,7-Te2 (CH2 )10 , 1,8-Te2 (CH2 )12 , 1,5,9-Te3 (CH2 )9 , 1,8,15-Te3 (CH2 )18 , 1,7,13,19-Te4 (CH2 )20 , 1,8,15,22-Te4 (CH2 )24 and 1,9,17,25-Te4 (CH2 )28 lead to tubular packing of the molecules, as has been observed previously for related thio- and selenoether rings. The nature of the intermolecular interactions was explored by solid-state PBE0-D3/pob-TZVP calculations involving periodic boundary conditions. The molecular packing in 1,7,13,19-Te4 (CH2 )20 , 1,8,15,22-Te4 (CH2 )24 and 1,9,17,25-Te4 (CH2 )28 forms infinite shafts. The electron densities at bond critical points indicate a narrow range of Te⋅⋅⋅Te bond orders of 0.12-0.14. The formation of the shafts can be rationalized by frontier orbital overlap and charge transfer.
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Affiliation(s)
- Marko Rodewald
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldt Strasse 807743JenaGermany
| | - J. Mikko Rautiainen
- Department of Chemistry, Nanoscience CenterUniversity of JyväskyläP.O. Box 3540014JyväskyläFinland
| | - Tobias Niksch
- Klinik für NuklearmedizinUniversitätsklinikum JenaAm Klinikum 107747JenaGermany
| | - Helmar Görls
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldt Strasse 807743JenaGermany
| | - Raija Oilunkaniemi
- Laboratory of Inorganic Chemistry, Environmental and Chemical EngineeringUniversity of OuluP.O. Box 300090014OuluFinland
| | - Wolfgang Weigand
- Institut für Anorganische und Analytische ChemieFriedrich-Schiller-Universität JenaHumboldt Strasse 807743JenaGermany
| | - Risto S. Laitinen
- Laboratory of Inorganic Chemistry, Environmental and Chemical EngineeringUniversity of OuluP.O. Box 300090014OuluFinland
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9
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Rodewald M, Rautiainen JM, Niksch T, Görls H, Oilunkaniemi R, Weigand W, Laitinen RS. Chalcogen-Bonding Interactions in Telluroether Heterocycles [Te(CH 2 ) m ] n (n=1-4; m=3-7). Chemistry 2020; 26:13747. [PMID: 33029878 DOI: 10.1002/chem.202003453] [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: 11/06/2022]
Abstract
Invited for the cover of this issue are the groups of Risto Laitinen at University of Oulu and Wolfgang Weigand at Friedrich Schiller University Jena. The image depicts a picturesque view of the Te⋅⋅⋅Te close contacts forming infinite tubular shafts in 1,9,17,25-Te4 (CH2 )28 . The cover artwork was designed and created by Marko Rodewald. Read the full text of the article at 10.1002/chem.202002510.
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Affiliation(s)
- Marko Rodewald
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldt Str. 8, 07743, Jena, Germany
| | - J Mikko Rautiainen
- Department of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box 35, 40014, Jyväskylä, Finland
| | - Tobias Niksch
- Klinik für Nuklearmedizin, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Germany
| | - Helmar Görls
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldt Str. 8, 07743, Jena, Germany
| | - Raija Oilunkaniemi
- Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland
| | - Wolfgang Weigand
- Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Humboldt Str. 8, 07743, Jena, Germany
| | - Risto S Laitinen
- Laboratory of Inorganic Chemistry, Environmental and Chemical Engineering, University of Oulu, P.O. Box 3000, 90014, Oulu, Finland
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Matuszyk E, Sierka E, Rodewald M, Bae H, Meyer T, Kus E, Chlopicki S, Schmitt M, Popp J, Baranska M. Differential response of liver sinusoidal endothelial cells and hepatocytes to oleic and palmitic acid revealed by Raman and CARS imaging. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165763. [PMID: 32169502 DOI: 10.1016/j.bbadis.2020.165763] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 02/21/2020] [Accepted: 03/06/2020] [Indexed: 02/08/2023]
Abstract
Excess circulating fatty acids contribute to endothelial dysfunction that subsequently aggravates the metabolic conditions such as fatty liver diseases. However, the exact mechanism of this event is not fully understood, and the investigation on the effect of a direct exposure to fatty acids together with their subsequent fate is of interest. In this work we employed a chemically specific and label-free techniques such as Raman and CARS microscopies, to investigate the process of lipid droplets (LDs) formation in endothelial cells and hepatocytes after exposure to oleic and palmitic acid. We aimed to observe the changes in the composition of LDs associated with metabolism and degradation of lipids. We were able to characterize the diversity in the formation of LDs in endothelium as compared to hepatocytes, as well as the differences in the formation of LDs and degradation manner with respect to the used fatty acid. Thus, for the first time the spectral characteristics of LDs formed in endothelial cells after incubation with oleic and palmitic acid is presented, including the time-dependent changes in their chemical composition.
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Affiliation(s)
- Ewelina Matuszyk
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland
| | - Ewa Sierka
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland
| | - Marko Rodewald
- Institute of Physical Chemistry (IPC), Abbe Center of Photonics (ACP), Friedrich-Schiller-University, Helmholtzweg 4, Jena, Germany
| | - Hyeonsoo Bae
- Institute of Physical Chemistry (IPC), Abbe Center of Photonics (ACP), Friedrich-Schiller-University, Helmholtzweg 4, Jena, Germany
| | - Tobias Meyer
- Institute of Physical Chemistry (IPC), Abbe Center of Photonics (ACP), Friedrich-Schiller-University, Helmholtzweg 4, Jena, Germany; Leibniz Institute of Photonic Technology, Member of Leibniz Health Technology, Albert-Einstein-Str. 9, Jena, Germany
| | - Edyta Kus
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland
| | - Stefan Chlopicki
- Jagiellonian University Medical College, Grzegorzecka 16, 31-531 Krakow, Poland; Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland
| | - Michael Schmitt
- Institute of Physical Chemistry (IPC), Abbe Center of Photonics (ACP), Friedrich-Schiller-University, Helmholtzweg 4, Jena, Germany
| | - Jürgen Popp
- Institute of Physical Chemistry (IPC), Abbe Center of Photonics (ACP), Friedrich-Schiller-University, Helmholtzweg 4, Jena, Germany; Leibniz Institute of Photonic Technology, Member of Leibniz Health Technology, Albert-Einstein-Str. 9, Jena, Germany.
| | - Malgorzata Baranska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland; Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland.
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Bocklitz T, Silge A, Bae H, Rodewald M, Legesse FB, Meyer T, Popp J. Non-invasive Imaging Techniques: From Histology to In Vivo Imaging : Chapter of Imaging in Oncology. Recent Results Cancer Res 2020; 216:795-812. [PMID: 32594407 DOI: 10.1007/978-3-030-42618-7_25] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this chapter, we will introduce and review molecular-sensitive imaging techniques, which close the gap between ex vivo and in vivo analysis. In detail, we will introduce spontaneous Raman spectral imaging, coherent anti-Stokes Raman scattering (CARS), stimulated Raman scattering (SRS), second-harmonic generation (SHG) and third-harmonic generation (THG), two-photon excited fluorescence (TPEF), and fluorescence lifetime imaging (FLIM). After reviewing these imaging techniques, we shortly introduce chemometric methods and machine learning techniques, which are needed to use these imaging techniques in diagnostic applications.
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Affiliation(s)
- Thomas Bocklitz
- University of Jena, IPC, Helmholtzweg 4, 07743, Jena, Germany.
| | - Anja Silge
- University of Jena, IPC, Helmholtzweg 4, 07743, Jena, Germany
| | - Hyeonsoo Bae
- University of Jena, IPC, Helmholtzweg 4, 07743, Jena, Germany
| | - Marko Rodewald
- University of Jena, IPC, Helmholtzweg 4, 07743, Jena, Germany
| | | | - Tobias Meyer
- University of Jena, IPC, Helmholtzweg 4, 07743, Jena, Germany
| | - Jürgen Popp
- University of Jena, IPC, Helmholtzweg 4, 07743, Jena, Germany.
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Rodewald M, Bartels J, Harder J. 646 Characterization of platelets-derived compounds that induce antimicrobial peptides in human keratinocytes. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.651] [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: 11/30/2022]
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Maduro M, Genze F, Winkler E, Wittig R, Isachenko V, Janni W, Hancke K, Rodewald M. Follicle proliferation in cryopreserved human ovarian xenotransplants. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Rodewald M, Barth T, Gundelach T, Widschwendter P, Janni W, Hancke K. Case-Report: Seltene Histologie eines Uterusmyom: genitales extrakardiales Rhabdomyom. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Bauer E, Rodewald M, Stuck D, Gundelach T, Friedl TWP, Janni W, Hancke K. Evaluation der Lebensqualität von Patientinnen mit Endometriose anhand des Endometriosis Health Profile Questionaire (EHP-30) und Korrelation mit dem operativen Befund anhand der ASRM und Enzian Klassifikation. Geburtshilfe Frauenheilkd 2015. [DOI: 10.1055/s-0035-1558380] [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: 10/23/2022] Open
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Rodewald M, Gundelach T, Degregorio N, Janni W, Hancke K. Controlled ovarian hyperstimulation and artificial reproduction with following intrauterine gravity after bilateral serous ovarian borderline tumour – Case report. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388018] [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] Open
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Rodewald M, Herr D, Duncan WC, Fraser HM, Hack G, Konrad R, Gagsteiger F, Kreienberg R, Wulff C. Molecular mechanisms of ovarian hyperstimulation syndrome: paracrine reduction of endothelial claudin 5 by hCG in vitro is associated with increased endothelial permeability. Hum Reprod 2009; 24:1191-9. [PMID: 19168871 DOI: 10.1093/humrep/den479] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Ovarian hyperstimulation syndrome (OHSS) is a potentially life-threatening complication of ovarian stimulation associated with severe vascular hyperpermeability. Primary co-cultures of human luteinized granulosa cells (LGCs) and human umbilical vein endothelial cells (HUVECs) were used as a model of steroidgenic/endothelial cell interaction in OHSS. METHODS hCG and the vascular endothelial growth factor (VEGF) inhibitor, Flt-1Fc, were added to co-cultures of LGCs and HUVECs separated by a micropore membrane. Endothelial permeability to labeled bovine serum albumin was measured and the expression of the endothelial cell-specific adhesion protein claudin 5 was investigated using immunocytochemistry and western blotting. RESULTS The addition of hCG increased HUVEC permeability in the presence of LGCs (P < 0.05). hCG increased VEGF concentrations in both chambers of the co-culture system (P < 0.05). The increased permeability in the presence of LGCs and hCG was inhibited when VEGF was blocked by Flt-1Fc (P < 0.05). Endothelial membrane claudin 5 protein was reduced in the presence of hCG and LGCs, as measured by immunocytochemistry (P < 0.05) and western blotting (P < 0.05) and this reduction was inhibited by Flt-1Fc. hCG had no direct effects on endothelial cell claudin 5. CONCLUSIONS For OHSS, this novel paradigm suggests that hCG can increase endothelial permeability by up-regulating VEGF in LGCs which causes reduction in endothelial claudin 5 expression.
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Affiliation(s)
- M Rodewald
- Department of Obstetrics and Gynecology, University of Ulm, Prittwitzstrasse 43, 89075 Ulm, Germany
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Rodewald M, Herr D, Fraser HM, Hack G, Kreienberg R, Wulff C. Regulation of tight junction proteins occludin and claudin 5 in the primate ovary during the ovulatory cycle and after inhibition of vascular endothelial growth factor. Mol Hum Reprod 2008; 13:781-9. [PMID: 18006538 DOI: 10.1093/molehr/gam066] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Ovarian follicular and corpus luteum development, including angiogenesis, are characterized by cell-cell rearrangements that may require dynamic changes in cell-cell adhesion. The present study investigates the expression of tight junction proteins occludin and claudin 5 during follicular and luteal development in the primate ovary and after inhibition of vascular endothelial growth factor (VEGF) by VEGF trap treatment. Occludin was localized to the plasma membrane of granulosa cells. During follicular development occludin staining decreased significantly (P < 0.05) and disappeared completely by the ovulatory stage. After inhibition of VEGF, occludin staining was significantly (P < 0.05) higher in the granulosa of secondary and tertiary follicles compared with controls. Claudin 5 was exclusively localized to the theca vasculature. A significant (P < 0.05) increase in staining was detected from the pre-antral to the antral and ovulatory stage. However, dual staining with CD31 revealed that within the theca endothelium the amount of claudin 5 remained constant during follicular development. Treatment with VEGF trap throughout the follicular phase revealed a lack of claudin 5 staining in the theca interna but no difference was observed in the remaining theca externa vasculature. In the corpus luteum, claudin 5 was also localized in the vasculature. Treatment with VEGF trap in the mid-luteal phase resulted in a significant increase in staining (P < 0.05). These results led us to hypothesize that tight junctions are involved in regulation of follicular growth, antrum transition and follicular angiogenesis which is compromised by VEGF inhibition. VEGF may influence luteal vascular permeability by regulation of the endothelial specific tight junction protein claudin 5.
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Affiliation(s)
- M Rodewald
- Department of Obstetrics and Gynecology, University of Ulm, Prittwitzstrasse 43, 89075 Ulm, Germany
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Herr D, Rodewald M, Fraser HM, Hack G, Konrad R, Kreienberg R, Wulff C. Regulation of endothelial proliferation by the renin–angiotensin system in human umbilical vein endothelial cells. Reproduction 2008; 136:125-30. [DOI: 10.1530/rep-07-0374] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study was performed in order to evaluate the role of angiotensin II in physiological angiogenesis. Human umbilical vein endothelial cells (HUVEC) were stained for angiotensin II type 1 receptor (AGTR1) immunocytochemically and for gene expression of renin–angiotensin system (RAS) components. The regulation of the angiogenesis-associated genes vascular endothelial growth factor (VEGF) and angiopoietins (ANGPT1andANGPT2) were studied using quantitative RT-PCR. Furthermore, we examined the effect of angiotensin II on the proliferation of HUVEC using Ki-67 as well as BrdU immunocytochemistry and investigated whether the administration of the AGTR1 blocker candesartan or the VEGF antagonist FLT1-Fc could suppress the observed angiotensin II-dependent proangiogenic effect. AGTR1 was expressed in HUVEC and the administration of angiotensin II significantly increased the gene expression ofVEGFand decreased the gene expression ofANGPT1. Since the expression ofANGPT2was not affected significantly the ratio of ANGPT1/ANGPT2 was decreased. In addition, a significantly increased endothelial cell proliferation was observed after stimulation with angiotensin II, which was suppressed by the simultaneous administration of candesartan or the VEGF antagonist FLT1-Fc. These results indicate the potential capacity of angiotensin II in influencing angiogenesis by the regulation of angiogenesis-associated genes via AGTR1. Since VEGF blockade opposed the effect of angiotensin II on cell proliferation, it is hypothesised that VEGF mediates the angiotensin II-dependent effect in concert with the changes in angiopoietin expression. This is the first report of the RAS on the regulation of angiogenesis-associated genes in physiology.
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Herr D, Rodewald M, Fraser HM, Hack G, Konrad R, Kreienberg R, Wulff C. Inhibition of angiogenic activity in endothelial cells by blockade of the Renin-Angiotensin-system. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.22026] [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: 11/20/2022] Open
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Herr D, Rodewald M, Fraser HM, Hack G, Konrad R, Kreienberg R, Wulff C. Potential role of Renin-Angiotensin-system for tumor angiogenesis in receptor negative breast cancer. Gynecol Oncol 2008; 109:418-25. [PMID: 18395779 DOI: 10.1016/j.ygyno.2008.02.019] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2007] [Revised: 02/04/2008] [Accepted: 02/19/2008] [Indexed: 01/24/2023]
Abstract
OBJECTIVE This study examined the potential role of Angiotensin II for the regulation of angiogenesis associated genes in receptor positive and negative human breast cancer. METHODS Expression of different Renin-Angiotensin system (RAS) components in human breast cancer tissue was investigated using immunofluorescence, and in a receptor positive (MCF-7) and receptor negative (MDA-MB 468) breast cancer cell line by performing immunocytochemistry and RT-PCR. Both cell lines were stimulated with Angiotensin II and Angiotensin II receptor type 1 (At(1)R) blocker Candesartan, and gene expression of vascular endothelial growth factor (VEGF), Angiopoietin 1 and 2 (Ang-1 and Ang-2), tissue inhibitor of matrix metalloproteinases 1 (TIMP-1), and hypoxia inducible transcription factor 2alpha (HIF-2alpha) were quantified by TaqMan-Real-Time PCR analysis. RESULTS RAS components, Angiotensinogen, Renin, Angiotensin I-converting enzyme (ACE), and At(1)R and At(2)R were expressed in hormone-receptor negative and positive human breast cancer tissue as well as in MDA-MB 468 and in MCF-7 human breast cancer cells. In addition, we found expression of VEGF, Ang-1, TIMP-1, and HIF-2alpha in both cell lines. However, only in receptor negative MDA-MB 468 cells, did Angiotensin II significantly increase gene expression of VEGF, HIF-2alpha, and TIMP-1. This effect was completely inhibited by Candesartan. CONCLUSION In conclusion, it is hypothesized that Angiotensin II may be involved in regulation of tumor angiogenesis especially in receptor negative breast cancer by regulation of angiogenesis associated genes via At(1)R. These findings are the first evidence for targeting tumor angiogenesis by inhibition of At(1)R in receptor negative human breast cancer cells and may lead to new therapeutical anticancer strategies based upon inhibition of At(1)R.
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Affiliation(s)
- D Herr
- Department of Obstetrics and Gynecology, Ulm University Medical Center, Prittwitzstrasse 43, 89075 Ulm, Germany
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Rodewald M, Herr D, Schmitt W, Konrad R, Kreienberg R, Wulff C. Retroperitoneal vascular leakage in ovarian cancer is associated with increased VEGF. Gynecol Oncol 2007; 108:251-2. [PMID: 17919701 DOI: 10.1016/j.ygyno.2007.08.081] [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] [Received: 08/22/2007] [Accepted: 08/22/2007] [Indexed: 10/22/2022]
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Herr D, Rodewald M, Hack G, Konrad R, Kreienberg R, Wulff C. Angiotensin II type 1 receptor antagonist candesartan is an angiogenic inhibitor in MDA-MB 468 human breast cancer cells. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.14114] [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: 11/20/2022] Open
Abstract
14114 Background: The present study examined the effect of angiotensin II on the regulation of different angiogenesis associated genes in human breast cancer cells and attempted to determine whether administration of At1R blocker candesartan could suppress the angiotensin II dependent gene regulation. Methods: Angiotensin II dependent expression of vascular endothelial growth factor (VEGF), tissue inhibitor of matrix metalloproteinases 1 (TIMP-1), and hypoxia inducible transcription factor 2alpha (HIF-2alpha) as well as administration of angiotensin II and At1R blocker candesartan was analyzed in MDA-MB 468 human breast cancer cells using immunofluorescence and TaqMan-Real-Time PCR analysis. Results: VEGF, TIMP-1, HIF-2alpha and the At1R were expressed in MDA-MB 468 human breast cancer cells. Angiotensin II significantly increased gene expression of VEGF, TIMP-1, and HIF-2alpha in these cells. This effect was completely inhibited by candesartan. Conclusion: It is hypothesized that angiotensin II is involved in regulation of tumor angiogenesis in breast cancer by regulation of angiogenesis associated genes via At1R. These findings are the first evidence for targeting tumor angiogenesis by inhibition of At1R in human breast cancer cells and may lead to new therapeutical anticancer strategies proposing administration of candesartan. No significant financial relationships to disclose.
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Affiliation(s)
- D. Herr
- University Hospital Ulm, Ulm, Germany
| | | | - G. Hack
- University Hospital Ulm, Ulm, Germany
| | - R. Konrad
- University Hospital Ulm, Ulm, Germany
| | | | - C. Wulff
- University Hospital Ulm, Ulm, Germany
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Herr D, Rodewald M, Hack G, Konrad R, Kreienberg R, Wulff C. Regulation of VEGF, HIF-2α, and TIMP-1 in human breast cancer cells by angiotensin II and its receptor antagonist candesartan. Geburtshilfe Frauenheilkd 2007. [DOI: 10.1055/s-2007-983499] [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] Open
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Rodewald M, Herr D, Fraser HM, Konrad R, Kreienberg R, Wulff C. Occludin-Expression im Primatenovar während des normalen Zyklus und nach VEGF-Inhibition. Geburtshilfe Frauenheilkd 2007. [DOI: 10.1055/s-2007-983486] [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] Open
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Rodewald M, Herr D, Fraser HM, Hack G, Kreienberg R, Wulff C. Claudin 5 im Primatenovar und seine Rolle bei der Regulation der Angiogenese und Permeabilität. Geburtshilfe Frauenheilkd 2007. [DOI: 10.1055/s-2007-983485] [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] Open
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Waberski TD, Kreitschmann-Andermahr I, Kawohl W, Darvas F, Ryang Y, Rodewald M, Gobbelé R, Buchner H. Spatio-temporal source imaging reveals subcomponents of the human auditory mismatch negativity in the cingulum and right inferior temporal gyrus. Neurosci Lett 2001; 308:107-10. [PMID: 11457571 DOI: 10.1016/s0304-3940(01)01988-7] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.3] [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: 11/17/2022]
Abstract
We investigated the generators of the mismatch negativity by means of spatio-temporal source imaging on the basis of 64-channel electroencephalography data in order to study the time course and localization of proposed frontal sources. Results indicate that there are additional generators located both within the anterior cingulate gyrus and in the right inferior temporal gyrus, clearly separated from the supratemporal generators in space and time course. The cingulate generator is activated later than the temporal ones, which supports the hypothesis of a frontally located mechanism of involuntary switching of attention triggered by the temporal change detection system. Evidence for an additional right inferior temporal generator supports the hypothesis of right hemispheric dominance in early sound discrimination.
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Affiliation(s)
- T D Waberski
- Department of Neurology, University Hospital Aachen, Pauwelsstrasse 30, D-52057 Aachen, Germany.
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Schmahl WW, Wruck B, Brecht E, Wolf T, Andersen NH, Rodewald M, Miehe G, Fueß H. Oxygen content and tweed/twin transition of YBa 2Cu 3−xAl xO 6+ysingle crystals. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396084309] [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: 11/10/2022] Open
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Rodewald M. Structure analysis of CoSi 2/Si 1−xGe x/Si(001) interfaces. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396081159] [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: 11/10/2022] Open
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Steinborn T, Adrian H, Brecht E, Fuess H, Maul M, Miehe G, Petersen K, Rodewald M, Rao M, Schmahl WW, Traeholt C, Wiesner J, Wirth G, Zandbergen H, Zegenhagen J. Orientational Changes in the ab plane of YBA2Cu3O7−δ Films on Different Substrates. J Appl Crystallogr 1996. [DOI: 10.1107/s0021889895011289] [Citation(s) in RCA: 3] [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] Open
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Kukla GJ, Angell JK, Korshover J, Dronia H, Hoshiai M, Namias J, Rodewald M, Yamamoto R, Iwashima T. New data on climatic trends. Nature 1977. [DOI: 10.1038/270573a0] [Citation(s) in RCA: 64] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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