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Horn J, Höhn P, Strotmann J, Majchrzak-Stiller B, Buchholz M, Uhl W, Herzog T. Next-generation microbiological testing in intraabdominal infections with PCR technology. Langenbecks Arch Surg 2024; 409:108. [PMID: 38570375 PMCID: PMC10990981 DOI: 10.1007/s00423-024-03298-9] [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: 11/13/2023] [Accepted: 03/22/2024] [Indexed: 04/05/2024]
Abstract
PURPOSE Intraabdominal infections (IAI) are increasing worldwide and are a major contributor to morbidity and mortality. Among IAI, the number of multi-drug resistant organisms (MDRO) is increasing globally. We tested the Unyvero A50® for intraabdominal infections, compared the detected microorganisms and antibiotic resistance, and compared the results with those of routine microbiology. METHODS We prospectively compared samples obtained from surgical patients using PCR-based Unyvero IAI cartridges against routine microbiology for the detection of microorganisms. Additionally, we identified clinical parameters that correlated with the microbiological findings. Data were analyzed using the t-test and Mann-Whitney U test. RESULTS Sixty-two samples were analyzed. The PCR system identified more microorganisms, mostly Bacteroides species, Escherichia coli, and Enterococcus spp. For bacterial resistance, the PCR system results were fully concordant with those of routine microbiology, resulting in a sensitivity, specificity, and positive and negative predictive value (PPV, NPV) of 100%. The sensitivity, specificity, PPV, and NPV for the detection of microorganisms were 74%, 58%, 60%, and 72%, respectively. CRP levels were significantly higher in patients with detectable microorganisms. We identified more microorganisms and bacterial resistance in hospital-acquired intra-abdominal infections by using the PCR system. DISCUSSION IAI warrants early identification of the microorganisms involved and their resistance to allow for adequate antibiotic therapy. PCR systems enable physicians to rapidly adjust their antibiotic treatment. Conventional microbiological culture and testing remain essential for determining the minimal growth inhibition concentrations for antibiotic therapy.
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Affiliation(s)
- Julian Horn
- Department of General and Visceral Surgery, St. Josef-Hospital Bochum, Ruhr University Bochum, Gudrunstraße 56, 44791, Bochum, Germany.
| | - Philipp Höhn
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital Bochum, Ruhr University Bochum, Gudrunstraße 56, 44791, Bochum, Germany
| | - Johanna Strotmann
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital Bochum, Ruhr University Bochum, Gudrunstraße 56, 44791, Bochum, Germany
| | - Britta Majchrzak-Stiller
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital Bochum, Ruhr University Bochum, Gudrunstraße 56, 44791, Bochum, Germany
| | - Marie Buchholz
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital Bochum, Ruhr University Bochum, Gudrunstraße 56, 44791, Bochum, Germany
| | - Waldemar Uhl
- Department of General and Visceral Surgery, St. Josef-Hospital Bochum, Ruhr University Bochum, Gudrunstraße 56, 44791, Bochum, Germany
| | - Torsten Herzog
- Department of General Surgery and Visceral Surgery, Klinikum Vest, Ruhr University Bochum, Recklinghausen, Germany
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Gambichler T, Harnischfeger F, Skrygan M, Majchrzak-Stiller B, Buchholz M, Müller T, Braumann C. In Vitro Experiments on the Effects of GP-2250 on BRAF-Mutated Melanoma Cell Lines and Benign Melanocytes. Int J Mol Sci 2023; 24:15336. [PMID: 37895015 PMCID: PMC10607550 DOI: 10.3390/ijms242015336] [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: 09/05/2023] [Revised: 10/15/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Enhanced glycolysis (Warburg effect) driven by the BRAF oncogene, dysregulated GAPDH expression, and activation of the PI3K/AKT/mTOR signaling pathway may significantly contribute to the resistance-targeted therapy of BRAF-mutated melanomas. Therefore, we aimed to study for the first time the anti-tumor activity of the GAPDH inhibitor GP-2250 in BRAF-mutated melanoma cell lines and benign melanocytes. We employed three melanoma cell lines and one primary melanocyte cell line (Ma-Mel-61a, Ma-Mel-86a, SH-4 and ATCC-PCS-200-013, respectively), which were exposed to different GP-2250 doses. GP-2250's effects on cell proliferation and viability were evaluated by means of the BrdU and MTT assays, respectively. The RealTime-Glo Annexin V Apoptosis and Necrosis Assay was performed for the evaluation of apoptosis and necrosis induction. RT-PCR and western blotting were implemented for the determination of AKT and STAT3 gene and protein expression analyses, respectively. The melanoma cell lines showed a dose-dependent response to GP-2250 during BrDU and MTT testing. The RealTime-Glo Annexin V assay revealed the heterogenous impact of GP-2250 on apoptosis as well as necrosis. With respect to the melanoma cell lines Ma-Mel-86a and SH-4, the responses and dosages were comparable to those used for the MTT viability assay. Using the same dose range of GP-2250 administered to melanoma cells, however, we observed neither the noteworthy apoptosis nor necrosis of GP-2250-treated benign melanocytes. The gene expression profiles in the melanoma cell lines for AKT and STAT3 were heterogenous, whereby AKT as well as STAT3 gene expression were most effectively downregulated using the highest GP-2250 doses. Immunoblotting revealed that there was a time-dependent decrease in protein expression at the highest GP-2250 dose used, whereas a time- as well as dose-dependent AKT decrease was predominantly observed in Ma-Mel-61a. The STAT3 protein expression of Ma-Mel-86a and SH-4 was reduced in a time-dependent pattern at lower and moderate doses. STAT3 expression in Ma-Me-61a was barely altered by GP-2250. In conclusion, GP-2250 has anti-neoplastic effects in BRAF-mutated melanoma cell lines regarding tumor cell viability, proliferation, and apoptosis/necrosis. GP-2250 is able to downregulate the gene and protein expression of aberrant tumorigenic pathways in melanoma cell lines. Since GP-2250 is a GAPDH inhibitor, the substance may be a promising combination therapy for tumors presenting the Warburg effect, such as melanoma.
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Affiliation(s)
- Thilo Gambichler
- Skin Cancer Center Ruhr-University, Department of Dermatology, Venereology and Allergology, Ruhr-University Bochum, 44791 Bochum, Germany; (F.H.); (M.S.)
| | - Friederike Harnischfeger
- Skin Cancer Center Ruhr-University, Department of Dermatology, Venereology and Allergology, Ruhr-University Bochum, 44791 Bochum, Germany; (F.H.); (M.S.)
| | - Marina Skrygan
- Skin Cancer Center Ruhr-University, Department of Dermatology, Venereology and Allergology, Ruhr-University Bochum, 44791 Bochum, Germany; (F.H.); (M.S.)
| | - Britta Majchrzak-Stiller
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (B.M.-S.); (M.B.)
| | - Marie Buchholz
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (B.M.-S.); (M.B.)
| | | | - Chris Braumann
- Department of General, Visceral and Vascular Surgery, Evangelisches Klinikum Gelsenkirchen, Akademisches Lehrkrankenhaus der Universität Duisburg-Essen, 45878 Gelsenkirchen, Germany;
- Department of General, Visceral and Tumor Surgery, Evangelisches Klinikum Herne, Akademisches Lehrkrankenhaus der Ruhr-Universität Bochum, 44623 Herne, Germany
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Gambichler T, Majchrzak-Stiller B, Peters I, Becker JC, Strotmann J, Abu Rached N, Müller T, Uhl W, Buchholz M, Braumann C. The effect of GP-2250 on cultured virus-negative Merkel cell carcinoma cells: preliminary results. J Cancer Res Clin Oncol 2023; 149:10831-10840. [PMID: 37311987 PMCID: PMC10423113 DOI: 10.1007/s00432-023-04960-3] [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: 04/30/2023] [Accepted: 06/01/2023] [Indexed: 06/15/2023]
Abstract
BACKGROUND Even in the novel immunotherapy era, Merkel cell carcinoma (MCC) remains challenging in its treatment. Apart from Merkel cell polyomavirus (MCPyV) associated MCC, this cancer is linked in about 20% of cases to ultraviolet-induced mutational burden frequently causing aberrations in Notch and PI3K/AKT/mTOR signalling pathways. The recently developed agent GP-2250 is capable to inhibit growth of cells of different cancers, including pancreatic neuroendocrine tumors. The objective of the present study was to investigate the effects of GP-2250 on MCPyV-negative MCC cells. METHODS Methods We employed three cell lines (MCC13, MCC14.2, MCC26) which were exposed to different GP-2250doses. GP-2250's effects on cell viability, proliferation, and migration were evaluated by means of MTT, BrdU, and scratch assays, respectively. Flow cytometry was performed for the evaluation of apoptosis and necrosis. Western blotting was implemented for the determination of AKT, mTOR, STAT3, and Notch1 protein expression. RESULTS Cell viability, proliferation, and migration decreased with increasing GP-2250 doses. Flow cytometry revealed a dose response to GP-2250 in all three MCC cell lines. While the viable fraction decreased, the share of necrotic and in a smaller amount the apoptotic cells increased. Regarding Notch1, AKT, mTOR, and STAT3 expression a comparatively time- and dose-dependent decrease of protein expression in the MCC13 and MCC26 cell lines was observed. By contrast, Notch1, AKT, mTOR, and STAT3 expression in MCC14.2 was scarcely altered or even increased by the three dosages of GP-2250 applied. CONCLUSIONS The present study indicates GP-2250 having anti-neoplastic effects in MCPyV-negative tumor cells in regard to viability, proliferation, and migration. Moreover, the substance is capable of downregulating protein expression of aberrant tumorigenic pathways in MCPyV-negative MCC cells.
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Affiliation(s)
- Thilo Gambichler
- Skin Cancer Center Ruhr-University, Department of Dermatology, Venereology and Allergology, Ruhr-University Bochum, Bochum, Germany
| | - Britta Majchrzak-Stiller
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
| | - Ilka Peters
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
| | - Jürgen C. Becker
- Translational Skin Cancer Research, German Cancer Consortium (DKTK) Partner Site Essen/Düsseldorf, Department of Dermatology, University Duisburg-Essen, Essen, Germany
- Deutsches Krebsforschungszentrum (DKFZ), Heidelberg, Germany
| | - Johanna Strotmann
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
| | - Nessr Abu Rached
- Skin Cancer Center Ruhr-University, Department of Dermatology, Venereology and Allergology, Ruhr-University Bochum, Bochum, Germany
| | | | - Waldemar Uhl
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
| | - Marie Buchholz
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
| | - Chris Braumann
- Department of General and Visceral Surgery, Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany
- Department of General, Visceral and Vascular Surgery, Evangelische Kliniken Gelsenkirchen, Akademisches Lehrkrankenhaus der Universität Duisburg-Essen, 45878 Gelsenkirchen, Germany
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Majchrzak-Stiller B, Buchholz M, Peters I, Waschestjuk D, Strotmann J, Höhn P, Hahn S, Braumann C, Uhl W, Müller T, Möhler H. GP-2250, a novel anticancer agent, inhibits the energy metabolism, activates AMP-Kinase and impairs the NF-kB pathway in pancreatic cancer cells. J Cell Mol Med 2023. [PMID: 37390227 DOI: 10.1111/jcmm.17825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 06/14/2023] [Accepted: 06/16/2023] [Indexed: 07/02/2023] Open
Abstract
GP-2250, a novel anticancer agent, severely limits the energy metabolism, as demonstrated by the inhibition of hexokinase 2 and glyceraldehyde-3-phosphate dehydrogenase and a decrease of ATP. Rescue experiments with supplementary pyruvate or oxaloacetate demonstrated that a TCA cycle deficit largely contributed to cytotoxicity. Activation of the energy-deficit sensor, AMP-dependent protein kinase, was associated with increased phosphorylation of acetyl-CoA carboxylase and Raptor, pointing to a possible deficit in the synthesis of fatty acids and proteins as essential cell components. Binding of p65 to DNA was dose-dependently reduced in nuclear lysates. A transcriptional deficit of NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) was substantiated by the downregulation of cyclin D1 and of the anti-apoptotic Bcl2, in line with reduction in tumour cell proliferation and induction of apoptosis, respectively. The upregulation of p53 concomitant with an excess of ROS supported apoptosis. Thus, the anticancer activity of GP-2250 is a result of disruption of energy metabolism and inhibition of tumour promotion by NF-κB.
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Affiliation(s)
- Britta Majchrzak-Stiller
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Marie Buchholz
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Ilka Peters
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Daniel Waschestjuk
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Johanna Strotmann
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Philipp Höhn
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - Stephan Hahn
- Department of Molecular Gastrointestinal Oncology, Ruhr-University Bochum, Bochum, Germany
| | - Chris Braumann
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
- Department of General, Visceral and Vascular Surgery, Evangelische Kliniken Gelsenkirchen, Akademisches Lehrkrankenhaus der Universität Duisburg-Essen, Gelsenkirchen, Germany
| | - Waldemar Uhl
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | | | - Hanns Möhler
- Institute of Pharmacology, University of Zurich and Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH), Zurich, Switzerland
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Majchrzak-Stiller B, Buchholz M, Peters I, Strotmann J, Möhrke J, Zelichowski L, Oehlke L, Quensel C, Fein D, Höhn P, Müller T, Uhl W, Braumann C. Oxathiazinane derivatives display both antineoplastic and antibacterial activity: a structure activity study. J Cancer Res Clin Oncol 2023:10.1007/s00432-023-04799-8. [PMID: 37171614 PMCID: PMC10374762 DOI: 10.1007/s00432-023-04799-8] [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: 02/17/2023] [Accepted: 04/15/2023] [Indexed: 05/13/2023]
Abstract
PURPOSE The Oxathiazinane substance class is characterized by a high diversity of chemical structures yet to be fully investigated. Our research group recently proved that the 1.4.5-oxathiazine-4.4-dioxide, known as substance GP-2250, possesses antineoplastic properties as shown on pancreatic carcinoma. This current study aims to gain insights into the structure and activity relationship of a series of different Oxathiazinanes regarding their antineoplastic activity and the potential correlation with antibacterial activity. We investigated the newly synthesized Oxathiazinane derivatives: 2255, 2256, 2287, 2289, 2293 and 2296 in comparison to GP-2250. METHODS The antineoplastic effect was evaluated in different cancer entities (breast, skin, pancreas and colon cancer cell lines) by viability, proliferation, and cell migration assays in vitro. Disc diffusion tests were performed on various bacteria strains to examine the antibacterial potential. Additionally, reactive oxygen species (ROS) assays were conducted to investigate mechanistic aspects. RESULTS The substances GP-2250, 2293, 2289 and 2296 not only showed antineoplastic activity in four different cancer entities but also antibacterial effects, as tested on multiple bacteria strains including MRSA (Methicillin-resistant Staphylococcus aureus). Furthermore, these substances also induced high ROS levels up to 110% in the treated cancer cell lines compared to untreated control cells. These results indicate a correlation between an antineoplastic capacity and antibacterial properties of these derivatives. Both activities appear to be ROS driven. The Oxathiazinane derivatives 2255, 2256 and 2287 lacked both, antineoplastic and antibacterial activity. CONCLUSION Thus, a comparable structure activity relationship became apparent for both the antineoplastic and antibacterial activity.
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Affiliation(s)
- B Majchrzak-Stiller
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany.
| | - M Buchholz
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - I Peters
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - J Strotmann
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - J Möhrke
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - L Zelichowski
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - L Oehlke
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - C Quensel
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - D Fein
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - P Höhn
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - T Müller
- Geistlich Pharma AG, Wolhusen, Switzerland
| | - W Uhl
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
| | - C Braumann
- Division of Molecular and Clinical Research, Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791, Bochum, Germany
- Department of General, Visceral and Vascular Surgery, Evangelische Kliniken Gelsenkirchen, Akademisches Lehrkrankenhaus der Universität Duisburg-Essen, Gelsenkirchen, Germany
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Buchholz M, Strotmann J, Majchrzak-Stiller B, Hahn S, Peters I, Horn J, Müller T, Höhn P, Uhl W, Braumann C. New Therapy Options for Neuroendocrine Carcinoma of the Pancreas—The Emergent Substance GP-2250 and Gemcitabine Prove to Be Highly Effective without the Development of Secondary Resistances In Vitro and In Vivo. Cancers (Basel) 2022; 14:cancers14112685. [PMID: 35681665 PMCID: PMC9179328 DOI: 10.3390/cancers14112685] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 05/20/2022] [Accepted: 05/25/2022] [Indexed: 11/22/2022] Open
Abstract
Simple Summary Neuroendocrine carcinoma of the pancreas is a highly aggressive form of neuroendocrine tumor associated with poor survival and increasing occurrence. GP-2250 is an emergent substance showing antineoplastic properties, especially in combination with Gemcitabine. This study was the first to evaluate the antineoplastic effects of GP-2250 on pancreatic neuroendocrine carcinoma. The combination of GP-2250 and Gemcitabine showed highly synergistic effects in a cell culture model, as well as in mice, without the development of secondary resistances. These findings form the basis for further clinical evaluation of a highly promising combination therapy. Abstract Neuroendocrine carcinoma of the pancreas (pNEC) is an aggressive form of neuroendocrine tumor characterized by a rising incidence without an increase in survival rates. GP-2250 is an oxathiazinane derivate possessing antineoplastic effects, especially in combination with Gemcitabine on the pancreatic adenocarcinoma. The cytotoxic effects of the monotherapy of GP-2250 (GP-2250mono) and Gemcitabine (Gemmono), as well as the combination therapy of both, were studied in vitro using an MTT-assay on the QGP-1 and BON-1 cell lines, along with in vivo studies on a murine xenograft model of QGP-1 and a patient-derived xenograft model (PDX) of Bo99. In vitro, Gemmono and GP-2250mono showed a dose-dependent cytotoxicity. The combination of GP-2250 and Gemcitabine exhibited highly synergistic effects. In vivo, the combination therapy obtained a partial response in QGP-1, while GP-2250mono and Gemmono showed progressive disease or stable disease, respectively. In Bo99 PDX, the combination therapy led to a partial response, while the monotherapy resulted in progressive disease. No development of secondary resistances was observed, as opposed to monotherapy. This study was the first to evaluate the effects of the emerging substance GP-2250 on pNEC. The substance showed synergism in combination with Gemcitabine. The combination therapy proved to be effective in vitro and in vivo, without the development of secondary resistances.
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Affiliation(s)
- Marie Buchholz
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (J.S.); (B.M.-S.); (I.P.); (J.H.); (P.H.); (W.U.); (C.B.)
- Correspondence: ; Tel.: +49-234-509-6236
| | - Johanna Strotmann
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (J.S.); (B.M.-S.); (I.P.); (J.H.); (P.H.); (W.U.); (C.B.)
| | - Britta Majchrzak-Stiller
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (J.S.); (B.M.-S.); (I.P.); (J.H.); (P.H.); (W.U.); (C.B.)
| | - Stephan Hahn
- Department of Molecular Gastrointestinal Oncology, Ruhr-University Bochum, 44780 Bochum, Germany;
| | - Ilka Peters
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (J.S.); (B.M.-S.); (I.P.); (J.H.); (P.H.); (W.U.); (C.B.)
| | - Julian Horn
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (J.S.); (B.M.-S.); (I.P.); (J.H.); (P.H.); (W.U.); (C.B.)
| | | | - Philipp Höhn
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (J.S.); (B.M.-S.); (I.P.); (J.H.); (P.H.); (W.U.); (C.B.)
| | - Waldemar Uhl
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (J.S.); (B.M.-S.); (I.P.); (J.H.); (P.H.); (W.U.); (C.B.)
| | - Chris Braumann
- Department of General and Visceral Surgery, St. Josef-Hospital, Ruhr-University Bochum, 44791 Bochum, Germany; (J.S.); (B.M.-S.); (I.P.); (J.H.); (P.H.); (W.U.); (C.B.)
- Department of General, Visceral and Vascular Surgery, Evangelische Kliniken Gelsenkirchen, Akademisches Lehrkrankenhaus der Universität Duisburg-Essen, 45879 Gelsenkirchen, Germany
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Buchholz M, Majchrzak-Stiller B, Hahn S, Vangala D, Pfirrmann RW, Uhl W, Braumann C, Chromik AM. Innovative substance 2250 as a highly promising anti-neoplastic agent in malignant pancreatic carcinoma - in vitro and in vivo. BMC Cancer 2017; 17:216. [PMID: 28340556 PMCID: PMC5366103 DOI: 10.1186/s12885-017-3204-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 03/17/2017] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Former studies already revealed the anti-neoplastic properties of the anti-infective agent Taurolidine (TRD) against many tumor species in vitro and in vivo. Its anti-proliferative and cell death inducing capacity is largely due to its main derivative Taurultam (TRLT). In this study it could be demonstrated, that substance 2250 - a newly defined innovative structural analogue of TRLT - exhibits an anti-neoplastic effect on malignant pancreatic carcinoma in vitro and in vivo. METHODS The anti-neoplastic potential of substance 2250 as well as its mode of action was demonstrated in extensive in vitro analysis, followed by successful and effective in vivo testings, using xenograft models derived from established pancreatic cancer cell lines as well as patient derived tissue. RESULTS Our functional analysis regarding the role of oxidative stress (ROS) and caspase activated apoptosis showed, that ROS driven programmed cell death (PCD) is the major mechanisms induced by substance 2250 in pancreatic carcinoma. What is strongly relevant towards clinical practice is especially the observed inhibition of patient derived pancreatic cancer tumor growth in mice treated with this new substance in combination with its sharply higher metabolic stability. CONCLUSION These encouraging results provide new therapeutical opportunities in pancreatic cancer treatment and build the basis for further functional analysis as well as first clinical studies for this promising agent.
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Affiliation(s)
- M. Buchholz
- Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - B. Majchrzak-Stiller
- Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - S. Hahn
- Department of Molecular Gastrointestinal Oncology, Ruhr-University Bochum, Bochum, Germany
| | - D. Vangala
- Department of Molecular Gastrointestinal Oncology, Ruhr-University Bochum, Bochum, Germany
- Department of Internal Medicine, Knappschaftskrankenhaus, Ruhr-University Bochum, Bochum, Germany
| | | | - W. Uhl
- Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - C. Braumann
- Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
| | - A. M. Chromik
- Division of Molecular and Clinical Research, St. Josef-Hospital, Ruhr-University Bochum, Bochum, Germany
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