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Lizzadro L, Spieß O, Collisi W, Stadler M, Schinzer D. Extending the Structure-Activity Relationship of Disorazole C 1 : Exchanging the Oxazole Ring by Thiazole and Influence of Chiral Centers within the Disorazole Core on Cytotoxicity. Chembiochem 2022; 23:e202200458. [PMID: 35998215 PMCID: PMC9826379 DOI: 10.1002/cbic.202200458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/22/2022] [Indexed: 01/11/2023]
Abstract
The synthesis of novel disorazole C1 analogues is described and their biological activity as cytotoxic compounds is reported. Based on our convergent entry to the disorazole core we present a flexible and robust strategy to construct a variety of interesting new analogues. In particular, two regions of the molecules were examined for structural modification: 1. Replacement of the heterocyclic moiety by an exchange of the oxazole ring by a thiazole; and 2. Evaluation of the influence of the absolute configuration of the chiral centers of the molecule. Predicated on our flexible strategy we were able to construct all analogues in an efficient way and could perform an exciting SAR (structure-activity-relationship) study to obtain insight in the cytotoxic activity influenced by the chiral centers of the disorazole core.
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Affiliation(s)
- Luca Lizzadro
- Chemisches InstitutOtto-von-Guericke-UniversitätUniversitätsplatz 239106MagdeburgGermany
| | - Oliver Spieß
- Chemisches InstitutOtto-von-Guericke-UniversitätUniversitätsplatz 239106MagdeburgGermany
| | - Wera Collisi
- Helmholtz-Zentrum für Infektionsforschung GmbHInhoffenstraβe 738124BraunschweigGermany
| | - Marc Stadler
- Helmholtz-Zentrum für Infektionsforschung GmbHInhoffenstraβe 738124BraunschweigGermany
| | - Dieter Schinzer
- Chemisches InstitutOtto-von-Guericke-UniversitätUniversitätsplatz 239106MagdeburgGermany
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2
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Libouban MAA, de Roos JADM, Uitdehaag JCM, Willemsen-Seegers N, Mainardi S, Dylus J, de Man J, Tops B, Meijerink JPP, Storchová Z, Buijsman RC, Medema RH, Zaman GJR. Stable aneuploid tumors cells are more sensitive to TTK inhibition than chromosomally unstable cell lines. Oncotarget 2018; 8:38309-38325. [PMID: 28415765 PMCID: PMC5503534 DOI: 10.18632/oncotarget.16213] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/03/2017] [Indexed: 01/26/2023] Open
Abstract
Inhibition of the spindle assembly checkpoint kinase TTK causes chromosome mis-segregation and tumor cell death. However, high levels of TTK correlate with chromosomal instability (CIN), which can lead to aneuploidy. We show that treatment of tumor cells with the selective small molecule TTK inhibitor NTRC 0066-0 overrides the mitotic checkpoint, irrespective of cell line sensitivity. In stable aneuploid cells NTRC 0066-0 induced acute CIN, whereas in cells with high levels of pre-existing CIN there was only a small additional fraction of cells mis-segregating their chromosomes. In proliferation assays stable aneuploid cells were more sensitive than cell lines with pre-existing CIN. Tetraploids are thought to be an intermediate between diploid and unstable aneuploid cells. TTK inhibitors had the same potency on post-tetraploid and parental diploid cells, which is remarkable because the post-tetraploids are more resistant to mitotic drugs. Finally, we confirm that the reference compound reversine is a TTK inhibitor and like NTRC 0066-0, inhibits the proliferation of patient-derived colorectal cancer organoids. In contrast, treatment with TTK inhibitor did not reduce the viability of non-proliferating T cell acute lymphoblastic leukemia cells samples. Consequently, TTK inhibitor therapy is expected to spare non-dividing cells, and may be used to target stable aneuploid tumors.
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Affiliation(s)
- Marion A A Libouban
- Netherlands Translational Research Center B.V., Oss, The Netherlands.,Netherlands Cancer Institute, Amsterdam, The Netherlands
| | | | | | | | - Sara Mainardi
- Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Jelle Dylus
- Netherlands Translational Research Center B.V., Oss, The Netherlands
| | - Jos de Man
- Netherlands Translational Research Center B.V., Oss, The Netherlands
| | - Bastiaan Tops
- Department of Pathology, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | | | - Rogier C Buijsman
- Netherlands Translational Research Center B.V., Oss, The Netherlands
| | - René H Medema
- Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Guido J R Zaman
- Netherlands Translational Research Center B.V., Oss, The Netherlands
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3
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Wu S, Guo Z, Hopkins CD, Wei N, Chu E, Wipf P, Schmitz JC. Bis-cyclopropane analog of disorazole C1 is a microtubule-destabilizing agent active in ABCB1-overexpressing human colon cancer cells. Oncotarget 2016; 6:40866-79. [PMID: 26506423 PMCID: PMC4747374 DOI: 10.18632/oncotarget.5885] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 09/28/2015] [Indexed: 11/25/2022] Open
Abstract
The novel, chemically stabilized disorazole analog, (−)-CP2-disorazole C1 (1) displayed potent anti-proliferative activity against a broad-spectrum of human colorectal cancer cells. HCT15 and H630R1 cell lines expressing high basal levels of the ABCB1 protein, known to cause multi-drug resistance, were also sensitive to growth inhibition by 1 but were resistant to both vincristine and docetaxel, two commonly used microtubule inhibitors. Compound 1 exhibited strong inhibition of tubulin polymerization at a level comparable to vincristine. In addition, treatment with 1 resulted in decreased protein levels of β-tubulin but not α-tubulin. An analysis of cellular proteins known to interact with microtubules showed that 1 caused decreased expression of c-Myc, APC, Rb, and additional key cellular signaling pathways in CRC cells. Treatment with compound 1 also resulted in G2/M cell cycle arrest and induction of apoptosis, but not senescence. Furthermore, endothelial spheroid sprouting assays demonstrated that 1 suppressed angiogenesis and can, therefore, potentially prevent cancer cells from spreading and metastasizing. Taken together, these findings suggest that the microtubule disruptor 1 may be a potential drug candidate for the treatment of mCRC.
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Affiliation(s)
- Shaoyu Wu
- Division of Hematology-Oncology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15232, USA.,Cancer Therapeutics Program, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, PA 15213, USA.,Department of Chemistry, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, China
| | - Zhijian Guo
- Department of Nephrology, NanFang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Chad D Hopkins
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Ning Wei
- Division of Hematology-Oncology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15232, USA.,Cancer Therapeutics Program, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Edward Chu
- Division of Hematology-Oncology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15232, USA.,Cancer Therapeutics Program, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Peter Wipf
- Cancer Therapeutics Program, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, PA 15213, USA.,Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - John C Schmitz
- Division of Hematology-Oncology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15232, USA.,Cancer Therapeutics Program, University of Pittsburgh Cancer Institute, University of Pittsburgh, Pittsburgh, PA 15213, USA
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4
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Genetic engineering and heterologous expression of the disorazol biosynthetic gene cluster via Red/ET recombineering. Sci Rep 2016; 6:21066. [PMID: 26875499 PMCID: PMC4753468 DOI: 10.1038/srep21066] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 01/18/2016] [Indexed: 11/08/2022] Open
Abstract
Disorazol, a macrocyclic polykitide produced by the myxobacterium Sorangium cellulosum So ce12 and it is reported to have potential cytotoxic activity towards several cancer cell lines, including multi-drug resistant cells. The disorazol biosynthetic gene cluster (dis) from Sorangium cellulosum (So ce12) was identified by transposon mutagenesis and cloned in a bacterial artificial chromosome (BAC) library. The 58-kb dis core gene cluster was reconstituted from BACs via Red/ET recombineering and expressed in Myxococcus xanthus DK1622. For the first time ever, a myxobacterial trans-AT polyketide synthase has been expressed heterologously in this study. Expression in M. xanthus allowed us to optimize the yield of several biosynthetic products using promoter engineering. The insertion of an artificial synthetic promoter upstream of the disD gene encoding a discrete acyl transferase (AT), together with an oxidoreductase (Or), resulted in 7-fold increase in disorazol production. The successful reconstitution and expression of the genetic sequences encoding for these promising cytotoxic compounds will allow combinatorial biosynthesis to generate novel disorazol derivatives for further bioactivity evaluation.
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Piekarska A, Kołodziejski D, Pilipczuk T, Bodnar M, Konieczka P, Kusznierewicz B, Hanschen FS, Schreiner M, Cyprys J, Groszewska M, Namieśnik J, Bartoszek A. The influence of selenium addition during germination ofBrassicaseeds on health-promoting potential of sprouts. Int J Food Sci Nutr 2014; 65:692-702. [DOI: 10.3109/09637486.2014.917148] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Abstract
The total synthesis of a bis-cyclopropane analog of the antimitotic natural product (-)-disorazole C(1) was accomplished in 23 steps and 1.1% overall yield. A vinyl cyclopropane cross-metathesis reaction generated a key (E)-alkene segment of the target molecule. IC(50) determinations of (-)-CP(2)-disorazole C(1) in human colon cancer cell lines indicated low nanomolar cytotoxic properties. Accordingly, this synthetic bioisostere represents the first biologically active disorazole analog not containing a conjugated diene or polyene substructure element.
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Affiliation(s)
- Chad D Hopkins
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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Payne CM, Crowley-Skillicorn C, Bernstein C, Holubec H, Bernstein H. Molecular and cellular pathways associated with chromosome 1p deletions during colon carcinogenesis. Clin Exp Gastroenterol 2011; 4:75-119. [PMID: 21753893 PMCID: PMC3132853 DOI: 10.2147/ceg.s17114] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Indexed: 11/23/2022] Open
Abstract
Chromosomal instability is a major pathway of sporadic colon carcinogenesis. Chromosome arm 1p appears to be one of the "hot spots" in the non-neoplastic mucosa that, when deleted, is associated with the initiation of carcinogenesis. Chromosome arm 1p contains genes associated with DNA repair, spindle checkpoint function, apoptosis, multiple microRNAs, the Wnt signaling pathway, tumor suppression, antioxidant activities, and defense against environmental toxins. Loss of 1p is dangerous since it would likely contribute to genomic instability leading to tumorigenesis. The 1p deletion-associated colon carcinogenesis pathways are reviewed at the molecular and cellular levels. Sporadic colon cancer is strongly linked to a high-fat/low-vegetable/low-micronutrient, Western-style diet. We also consider how selected dietary-related compounds (eg, excess hydrophobic bile acids, and low levels of folic acid, niacin, plant-derived antioxidants, and other modulatory compounds) might affect processes leading to chromosomal deletions, and to the molecular and cellular pathways specifically altered by chromosome 1p loss.
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Affiliation(s)
- Claire M Payne
- Department of Cell Biology and Anatomy, College of Medicine, University of Arizona Tucson, AZ, USA
| | | | - Carol Bernstein
- Department of Cell Biology and Anatomy, College of Medicine, University of Arizona Tucson, AZ, USA
| | - Hana Holubec
- Department of Cell Biology and Anatomy, College of Medicine, University of Arizona Tucson, AZ, USA
| | - Harris Bernstein
- Department of Cell Biology and Anatomy, College of Medicine, University of Arizona Tucson, AZ, USA
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