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Marzinzik AL, Amstutz R, Bold G, Bourgier E, Cotesta S, Glickman JF, Götte M, Henry C, Lehmann S, Hartwieg JCD, Ofner S, Pellé X, Roddy TP, Rondeau JM, Stauffer F, Stout SJ, Widmer A, Zimmermann J, Zoller T, Jahnke W. Discovery of Novel Allosteric Non-Bisphosphonate Inhibitors of Farnesyl Pyrophosphate Synthase by Integrated Lead Finding. ChemMedChem 2015; 10:1884-91. [PMID: 26381451 DOI: 10.1002/cmdc.201500338] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Indexed: 12/27/2022]
Abstract
Farnesyl pyrophosphate synthase (FPPS) is an established target for the treatment of bone diseases, but also shows promise as an anticancer and anti-infective drug target. Currently available anti-FPPS drugs are active-site-directed bisphosphonate inhibitors, the peculiar pharmacological profile of which is inadequate for therapeutic indications beyond bone diseases. The recent discovery of an allosteric binding site has paved the way toward the development of novel non-bisphosphonate FPPS inhibitors with broader therapeutic potential, notably as immunomodulators in oncology. Herein we report the discovery, by an integrated lead finding approach, of two new chemical classes of allosteric FPPS inhibitors that belong to the salicylic acid and quinoline chemotypes. We present their synthesis, biochemical and cellular activities, structure-activity relationships, and provide X-ray structures of several representative FPPS complexes. These novel allosteric FPPS inhibitors are devoid of any affinity for bone mineral and could serve as leads to evaluate their potential in none-bone diseases.
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Santos-Carballal B, Aaldering LJ, Ritzefeld M, Pereira S, Sewald N, Moerschbacher BM, Götte M, Goycoolea FM. Physicochemical and biological characterization of chitosan-microRNA nanocomplexes for gene delivery to MCF-7 breast cancer cells. Sci Rep 2015; 5:13567. [PMID: 26324407 PMCID: PMC4555168 DOI: 10.1038/srep13567] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 07/30/2015] [Indexed: 11/09/2022] Open
Abstract
Cancer gene therapy requires the design of non-viral vectors that carry genetic material and selectively deliver it with minimal toxicity. Non-viral vectors based on cationic natural polymers can form electrostatic complexes with negatively-charged polynucleotides such as microRNAs (miRNAs). Here we investigated the physicochemical/biophysical properties of chitosan-hsa-miRNA-145 (CS-miRNA) nanocomplexes and the biological responses of MCF-7 breast cancer cells cultured in vitro. Self-assembled CS-miRNA nanocomplexes were produced with a range of (+/-) charge ratios (from 0.6 to 8) using chitosans with various degrees of acetylation and molecular weight. The Z-average particle diameter of the complexes was <200 nm. The surface charge increased with increasing amount of chitosan. We observed that chitosan induces the base-stacking of miRNA in a concentration dependent manner. Surface plasmon resonance spectroscopy shows that complexes formed by low degree of acetylation chitosans are highly stable, regardless of the molecular weight. We found no evidence that these complexes were cytotoxic towards MCF-7 cells. Furthermore, CS-miRNA nanocomplexes with degree of acetylation 12% and 29% were biologically active, showing successful downregulation of target mRNA expression in MCF-7 cells. Our data, therefore, shows that CS-miRNA complexes offer a promising non-viral platform for breast cancer gene therapy.
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Pino I, Urbanowitz AK, Richling AB, De Santis C, Schäfer SD, Kiesel L, Götte M. Funktionelle Analyse der mikroRNA miR-218 bei der Endometriose: Assoziation der Herabregulation von EGF-Rezeptor und Decorin mit reduziertem invasivem Wachstum. Geburtshilfe Frauenheilkd 2015. [DOI: 10.1055/s-0035-1560021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Götte M, Kesting S, Taraks S, Boos J. Rahmenbedingungen individualisierter stationärer Bewegungsförderung in der kinderonkologischen Akutversorgung. B&G BEWEGUNGSTHERAPIE UND GESUNDHEITSSPORT 2015. [DOI: 10.1055/s-0035-1550108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kumar AV, Katakam S, Kiesel L, Götte M. The heparan sulfate sulfotransferase HS2ST1 modulates breast cancer cell invasiveness via the EGFR and MAPK signaling pathways. Exp Clin Endocrinol Diabetes 2015. [DOI: 10.1055/s-0035-1547652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Pino I, Urbanowitz AK, Richling AB, Kiesel L, Götte M. Functional analysis of microrna miR-218 in endometriosis: Role of EGFR and the TGFbeta-binding proteoglycan decorin. Exp Clin Endocrinol Diabetes 2015. [DOI: 10.1055/s-0035-1547731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kumar AV, Gassar ES, Kiesel L, Yip G, Götte M. 3-O-sulfation of heparan sulfate modulates breast cancer cell invasiveness by enhancing signaling via the map kinase- and TCF4 (TCF7L2) pathways. Exp Clin Endocrinol Diabetes 2015. [DOI: 10.1055/s-0035-1547653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Schiffmann ML, Schäfer SD, Schüring AN, Kiesel L, Sauerland C, Götte M, Schmitz R. Importance of transvaginal ultrasound applying elastography for identifying deep infiltrating endometriosis - a feasibility study. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2014; 35:561-565. [PMID: 25014480 DOI: 10.1055/s-0034-1366747] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE To evaluate the presence of a lesion indicative of endometriosis with transvaginal elastography. MATERIALS AND METHODS Transvaginal ultrasound and clinical examination were carried out in 48 women with clinical symptoms indicative of endometriosis. In 31 cases strain values were measured at two regions of interest (ROIs) in the Douglas's cul-de-sac during a cycle of compression and decompression with a vaginal probe. RESULTS A significant difference was found for the ratio of the ROI measuring points in the Douglas' cul-de-sacs of women with a palpable nodule in examination compared to women without a palpable nodule (p = 0.002). CONCLUSION The ratio of strain values between two ROIs in the Douglas' s cul-de-sac is associated with the presence of an endometriotic lesion. In the future, these findings could allow for a more detailed pre-surgical evaluation and possibly serve as a novel diagnostic tool for predicting deep infiltrating endometriosis.
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Megens S, De Wit S, Bernatchez J, Dekeersmaeker N, Vinken L, Covens K, Theys K, Camacho RJ, Vandamme AM, Götte M, Van Laethem K. Characterization of amino acids Arg, Ser and Thr at position 70 within HIV-1 reverse transcriptase. Acta Clin Belg 2014; 69:348-57. [PMID: 25103592 DOI: 10.1179/2295333714y.0000000038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES The amino acid position 70 in HIV-1 reverse transcriptase (RT) plays an important role in nucleoside RT inhibitor (NRTI) resistance. K70R is part of the thymidine analog mutations, but also other amino acid changes have been associated with NRTI resistance, such as K70E and K70G. In this study, we investigated the in vivo selection of the HIV-1 RT mutations K70S and K70T and their in vitro effect on drug resistance and replication capacity. METHODS Recombinant viruses with RT mutations were generated to measure the in vitro drug susceptibility and replication capacity. Bayesian network analysis and three-dimensional modeling were performed to understand the selection and impact of the RT70 mutations. RESULTS K70S and K70T were found at a low frequency in RTI-experienced HIV-1 patients (0.10% and 0·20%). Baeyesian network learning identified no direct association with the in vivo exposure to any specific RTI. However, direct associations of K70S with mutations within the Q151M-complex and of K70T with K65R were observed. In vitro phenotypic testing revealed only minor effects of K70R/S/T as single mutations, associated with Q151M and within the context of the Q151M-complex. DISCUSSION These results suggest that the selection of K70S/T and their phenotypic impact are influenced by the presence of other mutations in RT. However, the low impact on in vitro phenotype here observed, alongside with the low in vivo prevalence, the exclusive direct association with known major RTI mutations and the unknown correlation with in vivo response, do not yet necessitate the inclusion of K70S/T in drug resistance interpretation systems.
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Chelariu-Raicu A, Schüring AN, Kiesel L, Götte M. Die Rolle von Syndecan-4 in der Pathologie der Endometriose. Geburtshilfe Frauenheilkd 2014. [DOI: 10.1055/s-0034-1388244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Eggers J, Martino V, Reinbold R, Schäfer S, Kiesel L, Greve B, Götte M. microRNA miR-200b differentially affects proliferation, invasiveness and stemness of endometriotic cells by targeting the transcription factors KLF4, ZEB1 and ZEB2. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1371993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kohl A, Kemper B, Müller-Uthoff H, Eich HT, Kiesel L, Greve B, Götte M. siRNA-mediated inhibition of the stemness-related Musashi pathway affects LIF receptor expression and prometastatic motility of human MDA-MB-231 breast cancer cells. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Wischmann FJ, Pätzel M, Vijaya Kumar A, Braun T, Kemper B, Ernst I, Eich HT, Götte M, Greve B. Contribution of miR-218-dependent EGFR-signaling to the radiation response of breast cancer cells. Exp Clin Endocrinol Diabetes 2014. [DOI: 10.1055/s-0034-1372126] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Götte M, Kesting S, Albrecht C, Worth A, Bös K, Boos J. MOON-test - determination of motor performance in the pediatric oncology. KLINISCHE PADIATRIE 2013; 225:133-7. [PMID: 23599231 DOI: 10.1055/s-0033-1343411] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
BACKGROUND Pediatric cancer patients suffer from various negative consequences due to the disease, the medical therapy and the inactivity during the intensive treatment. Only few studies have systematically identified the adverse effects of cancer on motor performance in childhood. METHODS To determine the motor performance of pediatric cancer patients, a motor performance test was developed which is applicable for this specific patient group. Eight test items with reference values for healthy children were merged to the MOON-test (test for motor performance in the oncology). RESULTS MOON was tested for feasibility and acceptance in 33 patients aged 4-18 years. Feasibility was confirmed for children with different types of cancer (hematological malignancies and solid tumors) and with amputation, endoprosthesis, during aplasia as well as reduced general condition. Furthermore the patients showed a broad acceptance. CONCLUSION Based on the study findings, the use of MOON-test as a standardized motor performance diagnostic tool in clinical routine of oncological acute clinics as well as rehabilitation clinics can be recommended.·
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Schneider C, Kässens N, Greve B, Schüring AN, Kiesel L, Götte M. Targeting of Syndecan-1 by microRNA miR-10b modulates invasiveness of endometriotic cells via dysregulation of IL-6 secretion and MAPK signaling. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ibrahim SA, Hassan H, Greve B, Kelsch R, Kiesel L, Reinbold R, Götte M. Syndecan-1 (CD138) modulates breast cancer stem cell properties via regulation of IL-6-mediated STAT3 signaling. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kästingschäfer C, Schüring AN, Kiesel L, Gellersen B, Götte M. microRNA miR-142 - 3 p is a novel regulator of cell viability and proinflammatory signaling in endometrial stroma cells. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Vijaya Kumar A, Salem Gassar E, Spillmann D, Kiesel L, Yip GW, Götte M. Specific sulfation patterns in heparan sulfate promote a proinvasive phenotype of breast cancer cells via upregulation of Wnt and MAPK signaling. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Achmad N, Hubert M, Brüggemann K, Kiesel L, Greve B, Götte M. Pharmacological interference with the stemness-associated Notch-signaling pathway exerts an antiproliferative effect on the endometriotic 12Z cell line. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hassan H, Greve B, Kiesel L, Ibrahim SA, Götte M. Syndecan-1 modulates IL-6- and beta-integrin- dependent functions in breast cancer cell adhesion and migration. Exp Clin Endocrinol Diabetes 2013. [DOI: 10.1055/s-0033-1336639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Greve B, Sheikh-Mounessi F, Kemper B, Ernst I, Götte M, Eich HT. Survivin, a target to modulate the radiosensitivity of Ewing's sarcoma. Strahlenther Onkol 2012; 188:1038-47. [PMID: 23053158 DOI: 10.1007/s00066-012-0223-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Accepted: 08/06/2012] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND PURPOSE Radiotherapy constitutes an essential element in the multimodal therapy of Ewing's sarcoma. Compared to other sarcomas, Ewing tumors normally show a good response to radiotherapy. However, there are consistently tumors with a radioresistant phenotype, and the underlying mechanisms are not known in detail. Here we investigated the association between survivin protein expression and the radiosensitivity of Ewing's sarcoma in vitro. MATERIAL AND METHODS An siRNA-based knockdown approach was used to investigate the influence of survivin expression on cell proliferation, double-strand break (DSB) induction and repair, apoptosis and colony-forming ability in four Ewing's sarcoma cell lines with and without irradiation. RESULTS Survivin protein and mRNA were upregulated in all cell lines tested in a dose-dependent manner. As a result of survivin knockdown, STA-ET-1 cells showed reduced cell proliferation, an increased number of radiation-induced DSBs, and reduced repair. Apoptosis was increased by knockdown alone and increased further in combination with irradiation. Colony formation was significantly reduced by survivin knockdown in combination with irradiation. CONCLUSION Survivin is a radiation-inducible protein in Ewing's sarcoma and its down-regulation sensitizes cells toward irradiation. Survivin knockdown in combination with radiation inhibits cell proliferation, repair, and colony formation significantly and increases apoptosis more than each single treatment alone. This might open new perspectives in the radiation treatment of Ewing's sarcoma.
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Kümmel A, Selzer P, Siebert D, Schmidt I, Reinhardt J, Götte M, Ibig-Rehm Y, Parker CN, Gabriel D. Differentiation and visualization of diverse cellular phenotypic responses in primary high-content screening. ACTA ACUST UNITED AC 2012; 17:843-9. [PMID: 22396475 DOI: 10.1177/1087057112439324] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
High-throughput screening, based on subcellular imaging, has become a powerful tool in lead discovery. Through the generation of high-quality images, not only the specific target signal can be analyzed but also phenotypic changes of the whole cell are recorded. Yet analysis strategies for the exploration of high-content screening results, in a manner that is independent from predefined control phenotypes, are largely missing. The approach presented here is based on a well-established modeling technique, self-organizing maps (SOMs), which uses multiparametric results to group treatments that create similar morphological effects. This report describes a novel visualization of the SOM clustering by using an image of the cells from each node, with the most representative cell highlighted to deploy the phenotype described by each node. The approach has the potential to identify both expected hits and novel cellular phenotypes. Moreover, different chemotypes, which cause the same phenotypic effects, are identified, thus facilitating "scaffold hopping."
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Götte M. Stammzellen (SZ) und Regeneration des Endometriums – was wissen wir wirklich? Geburtshilfe Frauenheilkd 2011. [DOI: 10.1055/s-0031-1295384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
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Schüring AN, Braun J, Wüllner S, Kiesel L, Götte M. mRNA-expression of ERα, ERβ, and PR in clonal stem cell cultures obtained from human endometrial biopsies. ScientificWorldJournal 2011; 11:1762-9. [PMID: 22125434 PMCID: PMC3201690 DOI: 10.1100/2011/949823] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Accepted: 09/05/2011] [Indexed: 01/24/2023] Open
Abstract
Background. Proliferation and differentiation of the endometrium are regulated by estrogen and progesterone. The enormous regenerative capacity of the endometrium is thought to be based on the activity of adult stem cells. However, information on endocrine regulatory mechanisms in human endometrial stem cells is scarce. In the present study, we investigated the expression of ERα, ERβ, and PR in clonal cultures of human endometrial stem cells derived from transcervical biopsies. Methods. Endometrial tissue of 11 patients was obtained by transcervical biopsy. Stromal cell suspensions were plated at clonal density and incubated for 15 days. Expression of ERα, ERβ and PR was determined by qPCR prior to and after one cloning round, and normalized to 18 S rRNA expression. Results. Expression of ERα and ERβ was downregulated by 64% and 89%, respectively (P = 0.002 and P < 0.001). In contrast, PR was not significantly downregulated, due to a more heterogenous expression pattern. Conclusions. Culture of human endometrial stroma cells results in a downregulation of ERα and ERβ, while expression of PR remained unchanged in our patient collective. These results support the hypothesis that stem cells may not be subject to direct stimulation by sex steroids, but rather by paracrine mechanisms within the stem cell niche.
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Greve B, Willich N, Sheikh-Mounessi F, Van Dülmen A, Götte M. 2030 POSTER Knockdown of the Apoptosis Related Protein Survivin Leads to an Increased Radiosensitivity of Ewing Sarcoma in Vitro. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)70988-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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