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Erber R, Kailayangiri S, Hübner H, Rübner M, Hartmann A, Häberle L, Meyer J, Mackensen A, Landgraf L, Schulz-Wendtland R, Beckmann MW, Fasching PA, Farwick N, Rössig C, Gaß P. Disialogangliosids GD2 beim Mammakarzinom und dessen Einfluss auf die Prognose. Geburtshilfe Frauenheilkd 2020. [DOI: 10.1055/s-0040-1713987] [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: 10/23/2022] Open
Affiliation(s)
- R Erber
- Institut für Pathologie, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - S Kailayangiri
- Universitätskinderklinik Münster, Pädiatische Hämatologie und Onkologie, Münster
| | - H Hübner
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - M Rübner
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - A Hartmann
- Institut für Pathologie, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - L Häberle
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
- Biostatische Einheit, Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - J Meyer
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
- Biostatische Einheit, Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - A Mackensen
- Medizinische Klinik 5, Hämatologie und Onkologie, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - L Landgraf
- Institut für Pathologie, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - R Schulz-Wendtland
- Institut für Diagnostische Radiologie, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - M W Beckmann
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
| | - P A Fasching
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
- Division of Hematology/Oncology, Department of Medicine, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, USA
| | - N Farwick
- Universitätskinderklinik Münster, Pädiatische Hämatologie und Onkologie, Münster
| | - C Rössig
- Universitätskinderklinik Münster, Pädiatische Hämatologie und Onkologie, Münster
| | - P Gaß
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich Alexander Universität Erlangen–Nürnberg, Erlangen
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Erber R, Hartmann A, Beckmann MW, Mackensen A, Kremer A, Reimann H, Hübner H, Hein A, Lux MP, Jud S, Häberle L, Gaß P, Volz B, Schulz-Wendtland R, Rübner M, Fasching PA. [TILGen study-immunological targets in patients with breast cancer : Influence of tumor-infiltrating lymphocytes]. Pathologe 2019; 39:236-240. [PMID: 30406831 DOI: 10.1007/s00292-018-0526-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND The interaction of our immune system with breast cancer (BC) cells prompted the investigation of tumor-infiltrating lymphocytes (TILs) and targeted, tumor antigen-specific immunotherapy. OBJECTIVES Correlation between TILs and pathological complete response (pCR) after neoadjuvant systemic therapy (NACT). Tumor-specific antigens (TSAs) in HER2+ and triple negative BC and establishment of TSA-specific therapies within the interdisciplinary TILGen study. METHODS Illustration of the TILGen study design. Assessment of TILs and correlation with pCR within this BC study. RESULTS pCR was achieved in 38.4% (56/146) and associated with estrogen receptor/progesterone receptor negative (ER-/PR-) and HER2+ tumors. Lymphocytic predominant BC (LPBC) was found in 16.4% (24/146), particularly in ER-/PR- (ER-: 27.3% vs. ER+: 9.9%, PR-: 22.3% vs. PR+: 8.2%), large, and poorly differentiated BC. TILs were significantly correlated with pCR in multivariate analysis. In LPBC, pCR was achieved in 66.7%, whereas it was 32.8% in non-LPBC. CONCLUSIONS First results confirm the influence of the human immune system on the response to NACT in HER2+ and triple negative BC. TSA-specific immunotherapy might improve the outcome in BC patients but there is an urgent need for comprehensive studies to further investigate this issue.
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Affiliation(s)
- R Erber
- Pathologisches Institut, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Krankenhausstraße 8-10, 91054, Erlangen, Deutschland.
| | - A Hartmann
- Pathologisches Institut, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Krankenhausstraße 8-10, 91054, Erlangen, Deutschland
| | - M W Beckmann
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - A Mackensen
- Medizinische Klinik 5, Hämatologie und Internistische Onkologie, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - A Kremer
- Medizinische Klinik 5, Hämatologie und Internistische Onkologie, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - H Reimann
- Medizinische Klinik 5, Hämatologie und Internistische Onkologie, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - H Hübner
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - A Hein
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - M P Lux
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - S Jud
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - L Häberle
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - P Gaß
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - B Volz
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - R Schulz-Wendtland
- Radiologisches Institut/Gynäkologische Radiologie, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - M Rübner
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
| | - P A Fasching
- Frauenklinik, Universitätsklinikum Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Deutschland
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Stolwijk JA, Skiba M, Kade C, Bernhardt G, Buschauer A, Hübner H, Gmeiner P, Wegener J. Increasing the throughput of label-free cell assays to study the activation of G-protein-coupled receptors by using a serial agonist exposure protocol. Integr Biol (Camb) 2019; 11:99-108. [PMID: 31083709 DOI: 10.1093/intbio/zyz010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 01/23/2019] [Revised: 03/12/2019] [Accepted: 05/03/2019] [Indexed: 12/25/2022]
Abstract
Label-free, holistic assays, monitoring, for example, the impedance of cells on electrodes, are gaining increasing popularity in the evaluation of G-protein-coupled receptor (GPCR) ligands. It is the strength of these approaches to provide the integrated cellular response non-invasively, highly automated and with a device-dependent time resolution down to several milliseconds. With an increasing number of samples to be studied in parallel, the available time resolution is, however, reduced and the cost for the disposable sensor arrays may become limiting. Inspired by protocols from organ pharmacology, we investigated a simple serial agonist addition assay that circumvents these limitations in impedance-based cellular assays. Using a serial addition of increasing concentrations of a GPCR agonist while continuously monitoring the sample's impedance, we were able to establish a full concentration-response curve for the endogenous agonist histamine on a single layer of U-373 MG cells endogenously expressing the histamine 1 receptor (H1R). This approach is validated with respect to conventional, parallel agonist addition protocols and studies using H1R antagonists such as mepyramine. Applicability of the serial agonist addition assay was shown for other GPCRs known for their signaling via one of the canonical G-protein pathways, Gq, Gi/0 or Gs as well. The serial agonist addition protocol has the potential to further strengthen the output of label-free analysis of GPCR activation.
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Affiliation(s)
- J A Stolwijk
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Regensburg, Germany
| | - M Skiba
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Regensburg, Germany
| | - C Kade
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Regensburg, Germany
| | - G Bernhardt
- Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - A Buschauer
- Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - H Hübner
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg FAU, Erlangen, Germany
| | - P Gmeiner
- Department of Chemistry and Pharmacy, Friedrich-Alexander University Erlangen-Nürnberg FAU, Erlangen, Germany
| | - J Wegener
- Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Regensburg, Germany
- Fraunhofer Research Institution for Microsystems and Solid State Technologies EMFT, Munich, Germany
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Reimann H, Nguyen A, Hübner H, Erber R, Bausenwein J, Van der Meijden ED, Lux MP, Jud S, Griffioen M, Rauh C, Sanborn JZ, Benz SC, Rabizadeh S, Beckmann MW, Mackensen A, Rübner M, Fasching PA, Kremer AN. Abstract P2-09-04: Identification of a neoantigen targeted by tumor-infiltrating lymphocytes in a patient with Her2+ breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-09-04] [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
Abstract
Background: Recent studies have demonstrated that the number of tumor infiltrating lymphocytes (TILs) positively correlates with outcome and response to chemotherapy in patients with HER2+ and Triple-Negative Breast Cancer (TNBC). Furthermore, first studies of immune-checkpoint inhibitors showed promising results in those patients. However, the targets of those TILs remain unknown. Neoantigens, which arise in the process of tumorigenesis, appear as potential targets. They can elicit high avidity, tumor-specific T-cell responses. Thus, it is the aim of our study to ascertainif these TILs are directed against tumor-specific mutations.
Methods: TILs from breast cancer biopsies taken at the time point of diagnosis were expanded by unspecific stimulation. Additionally, we used the Gentle Macs Dissociator in combination with flow cytometry to investigate the number of TILs in the tumor tissue. Furthermore, we performed whole-genome sequencing of tumor tissue and as reference autologous blood cells to determine tumor-specific mutations. Mutations leading to a non-synonymous amino acid change were analyzed for RNA expression of the encoding gene as well as to determine potential neoantigens. Neoantigens were evaluated for their potential binding to the patient's specific HLA molecules. Peptides for potential neoantigens were synthesized, loaded onto autologous antigen presenting cells (APCs) and cocultured with TILs. All IFNγ producing T-cells were clonally expanded and retested for peptide specificity to identify neoantigen specific T-cell clones.
Results: Our flow cytometric analysis of the tumor biopsy for more than 300 patients showed higher frequencies of TILs in TNBC as compared to other types of breast cancer or patients without malignancy. Screening for neoantigen specific T-cells in one patient led to identification of three peptide-specific CD4+ T-cell clones isolated from HER2+ breast cancer tissue taken at the time point of diagnosis. All T-cell clones specifically recognized the same tumor-specific mutation and not the wildtype counterpart. Furthermore, we demonstrated that these T-cell clones also recognized the endogenously expressed mutated antigen. This verified the ability of processing and presentation of the respective protein. Interestingly, we could also isolate a T-cell clone recognizing the same neoantigen in the resected tumor tissue after neoadjuvant therapy. Based on CDR3 sequencing we could prove that the four T-cell clones represented individual clones. This confirms the polyclonal nature of the immune response. Moreover, we showed that the same neoepitope was presented in two different HLA restriction molecules of the patient with three of the clones recognizing it in HLA-DPB1*0401 and one in HLA-DPB1*0201. These results further underline the immunogenicity of this neoantigen.
Conclusion: In conclusion, our data demonstrate tumor-specificity of TILs in a patient with HER2+ breast cancer. Furthermore, we show the feasibility to identify individual cancer specific T-cell targets in breast cancer patients. These results may contribute to the development of targeted patient-specific immunotherapies in the future.
Citation Format: Reimann H, Nguyen A, Hübner H, Erber R, Bausenwein J, Van der Meijden ED, Lux MP, Jud S, Griffioen M, Rauh C, Sanborn JZ, Benz SC, Rabizadeh S, Beckmann MW, Mackensen A, Rübner M, Fasching PA, Kremer AN. Identification of a neoantigen targeted by tumor-infiltrating lymphocytes in a patient with Her2+ breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-09-04.
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Affiliation(s)
- H Reimann
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - A Nguyen
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - H Hübner
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - R Erber
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - J Bausenwein
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - ED Van der Meijden
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - MP Lux
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - S Jud
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - M Griffioen
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - C Rauh
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - JZ Sanborn
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - SC Benz
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - S Rabizadeh
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - MW Beckmann
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - A Mackensen
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - M Rübner
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - PA Fasching
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
| | - AN Kremer
- University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Santa Cruz, CA; University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg (FAU), Erlangen, Germany; NantOmics, LLC, Culver City, CA; Leiden University Medical Center, Leiden, The Netherlands
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Rübner M, Detsch R, Boccaccini AR, Strasser E, Steininger PA, Steigleder R, Wachter DL, Hübner H, Strissel P, Fasching PA, Beckmann MW, Strick R. Zell-Zell-Fusion von Monozyten zu Osteoclast-like Zellen und deren Inhibiton durch Chemo- und Immuntherapeutika. Geburtshilfe Frauenheilkd 2018. [DOI: 10.1055/s-0038-1671652] [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: 10/28/2022] Open
Affiliation(s)
- M Rübner
- Universitätsklinik Erlangen Frauenklinik, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Erlangen, Deutschland
| | - R Detsch
- Friedrich-Alexander Universität Erlangen-Nürnberg, Frauenklinik, Universitätsklinikum Erlangen, Lehrstuhl für Materialwissenschaften, Erlangen, Deutschland
| | - AR Boccaccini
- Friedrich-Alexander Universität Erlangen-Nürnberg, Frauenklinik, Universitätsklinikum Erlangen, Lehrstuhl für Materialwissenschaften, Erlangen, Deutschland
| | - E Strasser
- Universitätsklinik Erlangen, Transfusionsmedizin, Erlangen, Deutschland
| | - PA Steininger
- Universitätsklinik Erlangen, Virologie, Erlangen, Deutschland
| | - R Steigleder
- Universitätsklinik Erlangen, Erlangen, Deutschland
| | - DL Wachter
- Universitätsklinik Erlangen, Institut für Pathologie, Erlangen, Deutschland
| | - H Hübner
- Universitätsklinik Erlangen Frauenklinik, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Erlangen, Deutschland
| | - P Strissel
- Universitätsklinik Erlangen Frauenklinik, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Erlangen, Deutschland
| | - PA Fasching
- Universitätsklinik Erlangen Frauenklinik, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Erlangen, Deutschland
| | - MW Beckmann
- Universitätsklinik Erlangen Frauenklinik, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Erlangen, Deutschland
| | - R Strick
- Universitätsklinik Erlangen Frauenklinik, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Erlangen, Deutschland
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Abstract
This chapter describes selected assays for the evaluation of cellular viability and proliferation of cell cultures. The underlying principle of these assays is the measurement of a biochemical marker to evaluate the cell's metabolic activity. The formation of the omnipresent reducing agents NADH and NADPH is used as a marker for metabolic activity in the following assays. Using NADH and NADPH as electron sources, specific dyes are biochemically reduced which results in a color change that can be determined with basic photometrical methods. The assays selected for this chapter include MTT, WST, and resazurin. They are applicable for adherent or suspended cell lines, easy to perform, and comparably economical. Detailed protocols and notes for easier handling and avoiding pitfalls are enclosed to each assay.
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Affiliation(s)
- Konstantin Präbst
- Institute of Bioprocess Engineering, Friedrich-Alexander University Erlangen-Nürnberg, Paul-Gordan-Str. 3, 91052, Erlangen, Germany.
| | - Hannes Engelhardt
- Institute of Bioprocess Engineering, Friedrich-Alexander University Erlangen-Nürnberg, Paul-Gordan-Str. 3, 91052, Erlangen, Germany
| | - Stefan Ringgeler
- Institute of Bioprocess Engineering, Friedrich-Alexander University Erlangen-Nürnberg, Paul-Gordan-Str. 3, 91052, Erlangen, Germany
| | - Holger Hübner
- Institute of Bioprocess Engineering, Friedrich-Alexander University Erlangen-Nürnberg, Paul-Gordan-Str. 3, 91052, Erlangen, Germany
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7
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Abstract
Summary
Aim: Disturbances of the D4 receptor subtype have been implicated in the genesis of a broad range of psychiatric disorders. In order to assess the suitability of a radioiodinated analogue of the D4-selective ligand FAUC 113 for tracer studies in vivo, we investigated the in-vivo stability, biodistribution and brain-uptake of 7-131I-FAUC 113 in Sprague-Dawley rats. Methods: Radiolabelling was carried out with high radiochemical yield and specific activity. After intravenous injection, blood and tissue samples, taken at designated time intervals, were collected for analysis. Analyses of metabolites were performed by radiohplc and radio-tlc. For in-vivo evaluation, sagittal cryo-sections of the rat brain were investigated by in-vitro and exvivo autoradiography on a μ-Imager system. Results: 7-131I-FAUC 113 was rapidly cleared from blood. Highest uptake was observed in kidney (0.603±0.047% ID/g, n=4) and liver (0.357±0.070% ID/g, n=4) at 10 min p.i.; 7-131I-FAUC 113 displayed rapid uptake (0.21-0.26% ID/g) and fast clearance in various brain regions consistent with the determined logP-value of 2.36±0.15 (n=4). In-vivo stability of 7-131I-FAUC 113 was confirmed in the frontal cortex (>95%). Ex-vivo autoradiography revealed a frontal cortex-to-cerebellum ratio of 1.57±0.13 at 10 min p.i. (n=6). Coinjection with L-750667 could not suppress any putative specific binding of 7-131I-FAUC 113. In-vitro autoradiography using authentic 7-iodo-FAUC 113 or L-750667 failed to cause significant displacement of the radioligand. Conclusions: Radioiodinated FAUC 113 does not allow imaging of D4 receptors in the rat brain in vivo nor in vitro. Further work should aim at the development of selective dopamine D4 radioligands with improved tracer characteristics, such as receptor affinity and subtype selectivity, specific activity or blood-brainbarrier permeability.
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8
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Dakhil H, Do H, Hübner H, Wierschem A. Measuring the adhesion limit of fibronectin for fibroblasts with a narrow-gap rotational rheometer. Bioprocess Biosyst Eng 2017; 41:353-358. [DOI: 10.1007/s00449-017-1868-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 11/17/2017] [Indexed: 01/29/2023]
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9
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Krumbiegel P, Runge P, Hübner H, Mühlstätt M. Über Konkurrenzreaktionen unter Beteiligung zweier Aminogruppen. Z PHYS CHEM 2017. [DOI: 10.1515/zpch-1964-22723] [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]
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10
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Krumbiegel P, Hübner H. Über Konkurrenzreaktionen unter Beteiligung zweier Aminogruppen. Z PHYS CHEM 2017. [DOI: 10.1515/zpch-1964-22722] [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]
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11
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Schwerna P, Hübner H, Buchholz R. Quantification of oxygen production and respiration rates in mixotrophic cultivation of microalgae in nonstirred photobioreactors. Eng Life Sci 2016; 17:140-144. [PMID: 32624761 DOI: 10.1002/elsc.201600004] [Citation(s) in RCA: 6] [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] [Received: 01/11/2016] [Revised: 06/28/2016] [Accepted: 07/11/2016] [Indexed: 11/05/2022] Open
Abstract
Online monitoring and controlling of different cellular parameters are key issues in aerobic bioprocesses. Since mixotrophic cultivation, in which we observe a mixture of cellular respiration and oxygen production has gained more popularity, there is a need for an on-process quantification of these parameters. The presented and adapted double gassing-out method applied to a mixotrophic cultivation of Galdieria sulphuraria, will be a tool for monitoring and further optimization of algal fermentation in nonstirred photobioreactors (PBR). We measured the highest net specific oxygen production rate (opr net) as 5.73 · 10-3 molO2 g-1 h-1 at the lowest oxygen uptake rate (OUR) of 1.00 · 10-4 molO2 L-1 h-1. Due to higher cell densities, we also demonstrated the increasing shading effect by a decrease of opr net, reaching the lowest value of 1.25 10-5 molO2 g-1 h-1. Nevertheless, with this on process measurement, we can predict the relation between the zone in which oxygen is net produced to the area where cell respiration dominates in a PBR, which has a major impact to optimize cell growth along with the formation of different products of interest such as pigments.
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Affiliation(s)
- Philipp Schwerna
- Institute of Bioprocess Engineering Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Germany
| | - Holger Hübner
- Institute of Bioprocess Engineering Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Germany
| | - Rainer Buchholz
- Institute of Bioprocess Engineering Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Germany
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12
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Zambrano K, Jérôme V, Freitag R, Buchholz R, Jäck HM, Hübner H, Schuh W. Prolonged Ex vivo expansion and differentiation of naïve murine CD43−B splenocytes. Biotechnol Prog 2016; 32:978-89. [DOI: 10.1002/btpr.2265] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 03/10/2016] [Indexed: 02/06/2023]
Affiliation(s)
- Kenny Zambrano
- Institute of Bioprocess Engineering, Friedrich-Alexander-University Erlangen Nürnberg; Paul-Gordan-Straße 3 Erlangen D-91054 Germany
| | - Valérie Jérôme
- Chair for Process Biotechnology; University of Bayreuth; Universitätsstraße 30 Bayreuth D-95447 Germany
| | - Ruth Freitag
- Chair for Process Biotechnology; University of Bayreuth; Universitätsstraße 30 Bayreuth D-95447 Germany
| | - Rainer Buchholz
- Institute of Bioprocess Engineering, Friedrich-Alexander-University Erlangen Nürnberg; Paul-Gordan-Straße 3 Erlangen D-91054 Germany
| | - Hans-Martin Jäck
- Division Molecular Immunology, Dept. of Internal Medicine III; Nikolaus Fiebiger Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg; Glückstr. 6 Erlangen D-91054 Germany
| | - Holger Hübner
- Institute of Bioprocess Engineering, Friedrich-Alexander-University Erlangen Nürnberg; Paul-Gordan-Straße 3 Erlangen D-91054 Germany
| | - Wolfgang Schuh
- Division Molecular Immunology, Dept. of Internal Medicine III; Nikolaus Fiebiger Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg; Glückstr. 6 Erlangen D-91054 Germany
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13
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Dakhil H, Wierschem A, Gilbert D, Amtmann A, Hübner H, Buchholz R, Friedrich O. Viscoelastic Measurements of Cells in a Rotational Rheometer. CHEM-ING-TECH 2015. [DOI: 10.1002/cite.201550120] [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: 11/07/2022]
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14
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Werner M, Schmoldt D, Hilbrig F, Jérôme V, Raup A, Zambrano K, Hübner H, Buchholz R, Freitag R. High cell density cultivation of human leukemia T cells (Jurkat cells) in semipermeable polyelectrolyte microcapsules. Eng Life Sci 2015. [DOI: 10.1002/elsc.201400186] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Affiliation(s)
- Melanie Werner
- Chair for Process BiotechnologyUniversität Bayreuth, Bayreuth Germany
| | - Daria Schmoldt
- Chair for Process BiotechnologyUniversität Bayreuth, Bayreuth Germany
| | - Frank Hilbrig
- Chair for Process BiotechnologyUniversität Bayreuth, Bayreuth Germany
| | - Valérie Jérôme
- Chair for Process BiotechnologyUniversität Bayreuth, Bayreuth Germany
| | - Alexander Raup
- Institute of Bioprocess EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg, Erlangen Germany
| | - Kenny Zambrano
- Institute of Bioprocess EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg, Erlangen Germany
| | - Holger Hübner
- Institute of Bioprocess EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg, Erlangen Germany
| | - Rainer Buchholz
- Institute of Bioprocess EngineeringFriedrich‐Alexander‐Universität Erlangen‐Nürnberg, Erlangen Germany
| | - Ruth Freitag
- Chair for Process BiotechnologyUniversität Bayreuth, Bayreuth Germany
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15
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Schmoldt D, Werner M, Jérôme V, Freitag R, Hübner H, Buchholz R. Proliferation humaner primärer T-Lymphozyten in Polyelektrolytkapseln. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201450380] [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: 11/08/2022]
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16
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Kaiser P, Werner M, Jérôme V, Hübner H, Buchholz R, Freitag R. Cell retention by encapsulation for the cultivation of Jurkat cells in fixed and fluidized bed reactors. Biotechnol Bioeng 2014; 111:2571-9. [DOI: 10.1002/bit.25304] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 05/28/2014] [Accepted: 05/30/2014] [Indexed: 12/30/2022]
Affiliation(s)
- P. Kaiser
- Chair for Process Biotechnology; University of Bayreuth; 95447 Bayreuth Germany
| | - M. Werner
- Chair for Process Biotechnology; University of Bayreuth; 95447 Bayreuth Germany
| | - V. Jérôme
- Chair for Process Biotechnology; University of Bayreuth; 95447 Bayreuth Germany
| | - H. Hübner
- Institute of Bioprocess Engineering; Friedrich-Alexander University; Erlangen-Nürnberg Germany
| | - R. Buchholz
- Institute of Bioprocess Engineering; Friedrich-Alexander University; Erlangen-Nürnberg Germany
| | - R. Freitag
- Chair for Process Biotechnology; University of Bayreuth; 95447 Bayreuth Germany
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17
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Hübner H. [Lid reconstruction: functional and aesthetic aspects]. Klin Monbl Augenheilkd 2014; 231:17-27. [PMID: 24443131 DOI: 10.1055/s-0033-1360142] [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: 10/25/2022]
Abstract
There are numerous different procedures for eyelid reconstruction, one of them being the transfer of pedicled full eyelid flaps. With regard to the increasing demands of the patients the so-called sandwich techniques in most cases offer the chance to get the best functional and aesthetic result in a individual situation. Some of these techniques are presented here.
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Jantschak F, Brosda J, Franke RT, Fink H, Möller D, Hübner H, Gmeiner P, Pertz HH. Pharmacological profile of 2-bromoterguride at human dopamine D2, porcine serotonin 5-hydroxytryptamine 2A, and α2C-adrenergic receptors, and its antipsychotic-like effects in rats. J Pharmacol Exp Ther 2013; 347:57-68. [PMID: 23863695 DOI: 10.1124/jpet.113.205997] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Dopaminergic, serotonergic, and adrenergic receptors are targets for therapeutic actions in schizophrenia. Dopamine D2 receptor partial agonists such as aripiprazole represent a treatment option for patients with this severe disorder. The ineffectiveness of terguride, another D2 receptor partial agonist, in treating schizophrenia was recently attributed to its considerably high intrinsic activity at D2 receptors. In this study, we used functional assays for recombinant D2 receptors and native 5-hydroxytryptamine 2A (5-HT2A), α2C-adrenergic, and histamine H1 receptors to compare the pharmacological properties of terguride and three of its halogenated derivatives (2-chloro-, 2-bromo-, 2-iodoterguride) with those of aripiprazole. Subsequently, we studied the antidopaminergic effects of 2-bromoterguride using amphetamine-induced locomotion (AIL). Its influence on spontaneous behavior was tested in the open field. Extrapyramidal side effect (EPS) liability was evaluated by catalepsy test. In a guanosine 5'-O-(3-[(35)S]thio)triphosphate ([(35)S]GTPγS) binding assay, 2-chloro-, 2-bromo-, and 2-iodoterguride produced intrinsic activities at human D2short (hD2S) receptors that were half as high as the intrinsic activity for terguride; aripiprazole lacked agonist activity. 2-Bromoterguride and aripiprazole activated D2S receptor-mediated inhibition of cAMP accumulation to the same extent; intrinsic activity was half as high as that of terguride. All compounds tested behaved as antagonists at human D2long/Gαo (hD2L/Gαo) receptors. Compared with aripiprazole, terguride and its derivatives displayed higher affinity at porcine 5-HT2A receptors and α2C-adrenoceptors and lower affinity at H1 receptors. 2-Bromoterguride inhibited AIL and did not induce catalepsy in rats. Because of its in vitro and in vivo properties, 2-bromoterguride may be a strong candidate for the treatment of schizophrenia with a lower risk to induce EPS.
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Affiliation(s)
- F Jantschak
- Institute of Pharmacy, Free University of Berlin, Berlin, Germany (F.J., H.H.P.); Institute of Pharmacology and Toxicology, School of Veterinary Medicine, Free University of Berlin, Berlin, Germany (J.B., R.T.F., H.F.); and Department of Chemistry and Pharmacy, Emil Fischer Center, Friedrich Alexander University, Erlangen, Germany (D.M., H.H., P.G.)
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19
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Werner M, Biss K, Jérôme V, Hilbrig F, Freitag R, Zambrano K, Hübner H, Buchholz R, Mahou R, Wandrey C. Use of the mitochondria toxicity assay for quantifying the viable cell density of microencapsulated jurkat cells. Biotechnol Prog 2013; 29:986-93. [PMID: 23636962 DOI: 10.1002/btpr.1734] [Citation(s) in RCA: 9] [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] [Received: 11/14/2012] [Revised: 02/28/2013] [Indexed: 01/19/2023]
Abstract
The mitochondria toxicity assay (MTT assay) is an established method for monitoring cell viability based on mitochondrial activity. Here the MTT assay is proposed for the in situ quantification of the living cell density of microencapsulated Jurkat cells. Three systems were used to encapsulate the cells, namely a membrane consisting of an interpenetrating polyelectrolyte network of sodium cellulose sulphate/poly(diallyldimethylammonium chloride) (NaCS/PDADMAC), a calcium alginate hydrogel covered with poly(L-lysine) (Ca-alg-PLL), and a novel calcium alginate-poly(ethylene glycol) hybrid material (Ca-alg-PEG). MTT results were correlated to data obtained by the trypan blue exclusion assay after release of the cells from the NaCS/PDADMAC and Ca-alg-PLL capsules, while a resazurin-based assay was used for comparison in case of the Ca-alg-PEG material. Analysis by MTT assay allows quick and reliable determination of viable cell densities of encapsulated cells independent of the capsule material. The assay is highly reproducible with inter-assay relative standard deviations below 10%.
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Affiliation(s)
- M Werner
- Chair for Process Biotechnology, University of Bayreuth, Bayreuth, Germany
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20
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Freitag R, Werner M, Jérôme V, Zambrano K, Hübner H, Buchholz R. Einfluss einer Verkapselung und der so gegebenen Mikroumgebung auf die Proliferation humaner primärer T-Lymphozyten. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201250503] [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: 11/11/2022]
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21
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Dragu A, Taeger CD, Buchholz R, Sommerfeld B, Hübner H, Birkholz T, Kleinmann JA, Münch F, Horch RE, Präbst K. Online oxygen measurements in ex vivo perfused muscle tissue in a porcine model using dynamic quenching methods. Arch Orthop Trauma Surg 2012; 132:655-61. [PMID: 22246464 DOI: 10.1007/s00402-011-1458-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Indexed: 02/09/2023]
Abstract
INTRODUCTION Transplantation of autologous free tissue flaps is the best applicable technique for treating large and complex tissue defects and still has one major failure criterion. Tissue--and in particular muscle tissue--is strongly sensitive to ischemia, thus after a critical period of oxygen depletion the risk of a partial or total flap loss is high. MATERIALS AND METHODS For that reason a miniaturized ex vivo perfusion system has been developed, that supplies the tissue during operational delays. The purpose of this study was to determine the oxygenation levels during such a perfusion using different perfusates and therefore to objectify if a complementary oxygenation unit is required to improve perfusion quality. The oxygen levels of the tissue, as well of the perfusate, were measured by using minimal invasive optical oxygen sensors that are based on dynamic quenching. The ex vivo perfused tissue was the porcine rectus abdominis muscle. RESULTS Results show, that during perfusion with heparinized crystalloid fluid (Jonosteril) and heparinized autologous whole blood, additional oxygenation of the perfusion reactor led to different ex vivo oxygen tissue saturations, which can be detected by dynamic quenching. CONCLUSION Dynamic quenching methods are a promising and valuable technique to perform online oxygen measurements in ex vivo perfused muscle tissue in a porcine model.
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Affiliation(s)
- Adrian Dragu
- Department of Plastic and Hand Surgery, Friedrich-Alexander-University of Erlangen-Nürnberg, University Hospital, Krankenhausstrasse 12, 91054 Erlangen, Germany.
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Abstract
Simple congenital ptosis is the most common form, characterised by fatty dystrophy and fibrosis of the levator muscle, which leads to a restricted elevation in upgaze and a lid lag in downgaze. In the complicated form additional changes will be found: fibrosis of extraocular muscles, synkinesia or anomalies of the lids. Moreover, congenital ptosis is relatively often associated with refractive errors and/or disturbance of the binocular vision. Therefore a careful examination is necessary. Therapeutic management includes first prevention of amblyopia either by occlusion or by early surgical intervention. The choice of operation depends on the grade of ptosis, the actual levator function and the presence of lid anomalies as well.
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Höfling SB, Maschauer S, Hübner H, Gmeiner P, Wester HJ, Prante O, Heinrich MR. Synthesis, biological evaluation and radiolabelling by 18F-fluoroarylation of a dopamine D3-selective ligand as prospective imaging probe for PET. Bioorg Med Chem Lett 2010; 20:6933-7. [PMID: 21030255 DOI: 10.1016/j.bmcl.2010.09.142] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 09/27/2010] [Accepted: 09/28/2010] [Indexed: 12/28/2022]
Abstract
Radical (18)F-fluoroarylation with fluorine-18-labelled arenediazonium chlorides has been successfully applied to the radiochemical synthesis of the dopamine D(3)-selective ligand SH 317 ([(18)F]8). SH 317 has been evaluated as a new PET ligand candidate by in vivo experiments.
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Affiliation(s)
- S B Höfling
- Department für Chemie und Pharmazie, Pharmazeutische Chemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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Werner M, Lade T, Jérôme V, Hübner H, Buchholz R, Freitag R. Mikroumgebungsanalyse in Polyelektrolytkapseln für das Verständnis des Zellwachstums. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201050349] [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: 11/08/2022]
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25
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Skwarek M, Lade T, Werner M, Jérôme V, Zambrano K, Meier S, Hübner H, Buchholz R, Freitag R. Expandierte Proliferation von Jurkat-T-Zellen unter Zuhilfenahme spezieller Zellkulturtechniken. CHEM-ING-TECH 2010. [DOI: 10.1002/cite.201090007] [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: 11/08/2022]
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Affiliation(s)
- J. Heyer
- a Zentralinstitut für Mikrobiologie und Experimentelle Therapie der AdW der DDR , Jena
- b Zentralinstitut fü Isotopen- und Strahlenforschung der AdW der DDR , Leipzig
| | - H. Hübner
- a Zentralinstitut für Mikrobiologie und Experimentelle Therapie der AdW der DDR , Jena
- b Zentralinstitut fü Isotopen- und Strahlenforschung der AdW der DDR , Leipzig
| | - I. Maaβ
- a Zentralinstitut für Mikrobiologie und Experimentelle Therapie der AdW der DDR , Jena
- b Zentralinstitut fü Isotopen- und Strahlenforschung der AdW der DDR , Leipzig
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Hübner H. Wird der Ozonschild der Erde durch den zuchmeden Stickstoff-Düngemittelverbrauch zerstört ? — Ein Beitrag der Isotopenforschung. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/10256018108544572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- H. Hübner
- a Zentralinstitut für Isotopen- und Strahlenforschung der Akademic der Wissenschaften der DDR , 7030 Leipzig, Permoserstr. 15
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Affiliation(s)
- H. Hübner
- a Zentralinstitut für Isotopen- und Strahlenforschung Leipzig der Akademie der Wissenschaften der DDR
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Meier S, Hübner H, Buchholz R. Immobilisierte Expansion von (antigen-spezifischen) T-Zellen in einer Wirbelschicht. CHEM-ING-TECH 2006. [DOI: 10.1002/cite.200650391] [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: 11/08/2022]
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Prante O, Hocke C, Löber S, Hübner H, Gmeiner P, Kuwert T. Tissue distribution of radioiodinated FAUC113: assessment of a pyrazolo(1,5-a) pyridine based dopamine D4 receptor radioligand candidate. Nuklearmedizin 2006; 45:41-8. [PMID: 16493513 DOI: 10.1267/nukl06010041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
AIM Disturbances of the D4 receptor subtype have been implicated in the genesis of a broad range of psychiatric disorders. In order to assess the suitability of a radioiodinated analogue of the D4-selective ligand FAUC 113 for tracer studies in vivo, we investigated the in-vivo stability, biodistribution and brain-uptake of 7-(131)I-FAUC 113 in Sprague-Dawley rats. METHODS Radiolabelling was carried out with high radiochemical yield and specific activity. After intravenous injection, blood and tissue samples, taken at designated time intervals, were collected for analysis. Analyses of metabolites were performed by radio-hplc and radio-tlc. For in-vivo evaluation, sagittal cryo-sections of the rat brain were investigated by in-vitro and ex-vivo autoradiography on a mu-Imager system. RESULTS 7-(131)I-FAUC 113 was rapidly cleared from blood. Highest uptake was observed in kidney (0.603 +/- 0.047% ID/g, n = 4) and liver (0.357 +/- 0.070% ID/g, n = 4) at 10 min p.i.; 7-(131)I-FAUC 113 displayed rapid uptake (0.21-0.26% ID/g) and fast clearance in various brain regions consistent with the determined logP-value of 2.36 +/- 0.15 (n = 4). In-vivo stability of 7-(131)I-FAUC 113 was confirmed in the frontal cortex (>95%). Ex-vivo autoradiography revealed a frontal cortex-to-cerebellum ratio of 1.57 +/- 0.13 at 10 min p.i. (n = 6). Coinjection with L-750667 could not suppress any putative specific binding of 7-(131)I-FAUC 113. In-vitro autoradiography using authentic 7-iodo-FAUC 113 or L-750667 failed to cause significant displacement of the radioligand. CONCLUSIONS Radioiodinated FAUC 113 does not allow imaging of D4 receptors in the rat brain in vivo nor in vitro. Further work should aim at the development of selective dopamine D4 radioligands with improved tracer characteristics, such as receptor affinity and subtype selectivity, specific activity or blood-brain barrier permeability.
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Affiliation(s)
- O Prante
- Labor für Molekulare Bildgebung, Nuklearmedizinische Klinik, Friedrich-Alexander Universität Erlangen-Nürnberg, Schwabachanlage 6, 91054 Erlangen, Germany.
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Günther K, Hampel M, Höbold W, Hübner H, Just G, Müller-Hagen G, Pritzkow W, Rolle W, Wahren M, Winter H. Über den Mechanismus der Reaktion zwischen Alkansulfonylchloriden und Phenolaten. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/prac.19693110409] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Hofmann R, Hübner H, Just G, Krätzsch L, Litkowez AK, Pritzkow W, Rolle W, Wahren M. Über die Zersetzung organischer Hydroperoxide in Gegenwart von Basen. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/prac.19680370115] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
Starting from both isomers of enantiopure asparagine, heterocyclic bioisosteres of the preferential dopamine D3 receptor agonist (R)-7-OH-DPAT were investigated when SAR studies led to the 3-formyl substituted aminoindolizine (S)-1e (FAUC 54) displaying a K(i) value of 6.0 nM for the high affinity D3 binding site. In contrast, D3 affinity of the enantiomer (R)-1e was 300 fold lower.
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Affiliation(s)
- T Lehmann
- Department of Medicinal Chemistry, Emil Fischer Center, Friedrich-Alexander University, Schuhstrasse 19, D-91052 Erlangen, Germany
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Kaiser W, Hübner H. [Not Available]. Wiss Beitr Martin Luther Univ Halle Wittenberg 2001; 5-R80:3-321. [PMID: 11628974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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Einsiedel J, Hübner H, Gmeiner P. Benzamide bioisosteres incorporating dihydroheteroazole substructures: EPC synthesis and SAR leading to a selective dopamine D4 receptor partial agonist (FAUC 179). Bioorg Med Chem Lett 2001; 11:2533-6. [PMID: 11549463 DOI: 10.1016/s0960-894x(01)00484-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [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: 11/30/2022]
Abstract
Conformationally restricted benzamide bioisosteres were investigated when the chiral phenyldihydroimidazole derivative 4e (FAUC 179) showed strong and highly selective dopamine D4 receptor binding (K(i)high=0.95nM). Mitogenesis experiments indicated partial agonist properties (42%). EPC syntheses of the target compounds of type 4 were performed starting from alpha-amino acids.
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Affiliation(s)
- J Einsiedel
- Department of Medicinal Chemistry, Emil Fischer Center, Friedrich-Alexander University, Schuhstrasse 19, D-91052, Erlangen, Germany
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Prante O, Löber S, Hübner H, Gmeiner P, Kuwert T. Synthesis and in vitro evaluation of iodine labelled pyrazolo[1,5-a]pyridines as highly selective dopamine D4 receptor ligands. J Labelled Comp Radiopharm 2001. [DOI: 10.1002/jlcr.508] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Löber S, Hübner H, Utz W, Gmeiner P. Rationally based efficacy tuning of selective dopamine d4 receptor ligands leading to the complete antagonist 2-[4-(4-chlorophenyl)piperazin-1-ylmethyl]pyrazolo[1,5-a]pyridine (FAUC 213). J Med Chem 2001; 44:2691-4. [PMID: 11495580 DOI: 10.1021/jm015522j] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Structure dependent efficacy studies in the field of selective D4 ligands led to the 2-aminomethyl substituted azaindole 2 (FAUC 213) that displayed strong D4 binding, high subtype selectivity, and complete antagonist properties in ligand-induced mitogenesis experiments. According to our schematic molecular model, the intrinsic activity of the regioisomers investigated is controlled by the ability of the heterocyclic unit to interact with both elements of the D4 binding-site crevice, the aromatic microdomain in TM6, and a serine residue in TM5.
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Affiliation(s)
- S Löber
- Department of Medicinal Chemistry, Emil Fischer Center, Friedrich-Alexander University, Schuhstrasse 19, D-91052 Erlangen, Germany
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Orth B, Press UP, Hübner H, Pleyer U. [Transplantation of autologous oral mucosa in the treatment of a symblepharon in Wegener's disease--a case report]. Klin Monbl Augenheilkd 2001; 218:514-7. [PMID: 11512253 DOI: 10.1055/s-2001-16295] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND Wegener's disease, an immune vasculitis, is characterized by granulomata and vasculitis of small and large vessels. Ocular manifestations are observed in approximately half of all cases. PATIENT We report on a 58-year-old male with severe generalized Wegener's disease which was first diagnosed in 1986. The involvement of the central nervous system became clinically manifest by a stroke, of the kidneys by incipient renal insufficiency, and of the larynx by recurrent subglottic stenosis of the trachea. The first ocular involvement, a conjunctivitis, was observed in 1988. Despite systemic immuno-suppressive therapy, local conservative therapy and repeated surgical procedures, his vision decreased bilaterally from 60/60 to hand movement (OD) and light perception only (OS) during the following years because of a massive bilateral symblepharon. Transplantation of autologous oral mucosa to the conjunctiva led to a persistent increase of vision and a good cosmetic result. CONCLUSIONS We conclude that in patients with Wegener's disease, who have developed a symblepharon despite intensive therapy, the transplantation of oral mucosa can produce a sufficient functional and cosmetic result.
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Affiliation(s)
- B Orth
- Augenklinik Charité, Campus Virchow-Klinikum der Humboldt Universität zu Berlin, 13344 Berlin
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Abstract
A more detailed phytochemical analysis of extracts of the aerial parts of Spigelia anthelmia L. (Loganiaceae) yielded 20 structurally related new compounds besides spiganthine and ryanodine. Structure elucidation was achieved mainly by spectroscopic methods. The compounds were tested on their cardiac and on their insect antifeedant activities.
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Affiliation(s)
- H Hübner
- Department of Pharmaceutical Chemistry, University of Erlangen, Germany.
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Hübner H, Kraxner J, Gmeiner P. Cyanoindole derivatives as highly selective dopamine D(4) receptor partial agonists: solid-phase synthesis, binding assays, and functional experiments. J Med Chem 2000; 43:4563-9. [PMID: 11087581 DOI: 10.1021/jm0009989] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Traceless linking of diethoxymethyl (DEM)-protected 5- and 6-cyanoindoles and subsequent incorporation of phenylpiperazine derivatives led to the 2- and 3-piperazinylmethyl-substituted cyanoindoles 3a-m. Dopamine receptor binding studies on the final products 3a-m clearly indicated strong and selective recognition of the D(4) subtype which is known as a promising target for the treatment of neuropsychiatric disorders. The most interesting binding properties were observed for the 2-aminomethyl-5-cyanoindoles FAUC 299 (3f) and FAUC 316 (3j) (K(i) = 0.52 and 1.0 nM, respectively) when the fluoro derivative 3j proved extraordinary selectivity over D(1), D(2long), D(2short), and D(3) (>8600). To determine ligand efficacy, mitogenesis experiments were performed indicating partial agonist effects for the test compounds 3f,j (35% and 30%, when compared to the full agonist quinpirole).
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Affiliation(s)
- H Hübner
- Department of Medicinal Chemistry, Emil Fischer Center, Friedrich-Alexander University, Schuhstrasse 19, D-91052 Erlangen, Germany
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