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Ren W, Deng Y, Ward JD, Vairin R, Bai R, Wanniarachchi HI, Hamal KB, Tankoano PE, Tamminga CS, Bueno LMA, Hamel E, Mason RP, Trawick ML, Pinney KG. Synthesis and biological evaluation of structurally diverse 6-aryl-3-aroyl-indole analogues as inhibitors of tubulin polymerization. Eur J Med Chem 2024; 263:115794. [PMID: 37984295 PMCID: PMC11019941 DOI: 10.1016/j.ejmech.2023.115794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 08/31/2023] [Accepted: 09/04/2023] [Indexed: 11/22/2023]
Abstract
The synthesis and evaluation of small-molecule inhibitors of tubulin polymerization remains a promising approach for the development of new therapeutic agents for cancer treatment. The natural products colchicine and combretastatin A-4 (CA4) inspired significant drug discovery campaigns targeting the colchicine site located on the beta-subunit of the tubulin heterodimer, but so far these efforts have not yielded an approved drug for cancer treatment in human patients. Interest in the colchicine site was enhanced by the discovery that a subset of colchicine site agents demonstrated dual functionality as both potent antiproliferative agents and effective vascular disrupting agents (VDAs). Our previous studies led to the discovery and development of a 2-aryl-3-aroyl-indole analogue (OXi8006) that inhibited tubulin polymerization and demonstrated low nM IC50 values against a variety of human cancer cell lines. A water-soluble phosphate prodrug salt (OXi8007), synthesized from OXi8006, displayed promising vascular disrupting activity in mouse models of cancer. To further extend structure-activity relationship correlations, a series of 6-aryl-3-aroyl-indole analogues was synthesized and evaluated for their inhibition of tubulin polymerization and cytotoxicity against human cancer cell lines. Several structurally diverse molecules in this small library were strong inhibitors of tubulin polymerization and of MCF-7 and MDA-MB-231 human breast cancer cells. One of the most promising analogues (KGP591) caused significant G2/M arrest of MDA-MB-231 cells, disrupted microtubule structure and cell morphology in MDA-MB-231 cells, and demonstrated significant inhibition of MDA-MB-231 cell migration in a wound healing (scratch) assay. A phosphate prodrug salt, KGP618, synthesized from its parent phenolic precursor, KGP591, demonstrated significant reduction in bioluminescence signal when evaluated in vivo against an orthotopic model of kidney cancer (RENCA-luc) in BALB/c mice, indicative of VDA efficacy. The most active compounds from this series offer promise as anticancer therapeutic agents.
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Affiliation(s)
- Wen Ren
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX, 76798-7348, United States.
| | - Yuling Deng
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX, 76798-7348, United States.
| | - Jacob D Ward
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX, 76798-7348, United States.
| | - Rebecca Vairin
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX, 76798-7348, United States.
| | - Ruoli Bai
- Molecular Pharmacology Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health, Frederick, MD, 21702, United States.
| | - Hashini I Wanniarachchi
- Department of Radiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-9058, United States.
| | - Khagendra B Hamal
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX, 76798-7348, United States.
| | - Pouguiniseli E Tankoano
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX, 76798-7348, United States.
| | - Caleb S Tamminga
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX, 76798-7348, United States.
| | - Lorena M A Bueno
- Department of Radiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-9058, United States.
| | - Ernest Hamel
- Molecular Pharmacology Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health, Frederick, MD, 21702, United States.
| | - Ralph P Mason
- Department of Radiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390-9058, United States.
| | - Mary Lynn Trawick
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX, 76798-7348, United States.
| | - Kevin G Pinney
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX, 76798-7348, United States.
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Ren W, Vairin R, Ward JD, Francis R, VanNatta J, Bai R, Tankoano PE, Deng Y, Hamel E, Trawick ML, Pinney KG. Structure Guided Design, Synthesis, and Biological Evaluation of Oxetane-Containing Indole Analogues. Bioorg Med Chem 2023; 92:117400. [PMID: 37556912 PMCID: PMC10848874 DOI: 10.1016/j.bmc.2023.117400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 06/28/2023] [Accepted: 06/29/2023] [Indexed: 08/11/2023]
Abstract
The oxetane functional group offers a variety of potential advantages when incorporated within appropriate therapeutic agents as a ketone surrogate. OXi8006, a 2-aryl-3-aroyl-indole analogue, functions as a small-molecule inhibitor of tubulin polymerization that has a dual mechanism of action as both an antiproliferative agent and a tumor-selective vascular disrupting agent. Replacement of the bridging ketone moiety in OXi8006 with an oxetane functional group has expanded structure activity relationship (SAR) knowledge and provided insights regarding oxetane incorporation within this class of molecules. A new synthetic method using an oxetane-containing tertiary alcohol subjected to Lewis acid catalyzed conditions led to successful Friedel-Crafts alkylation and yielded fourteen new oxetane-containing indole-based molecules. This synthetic approach represents the first method to successfully install an oxetane ring at the 3-position of a 2-aryl-indole system. Several analogues showed potent cytotoxicity (micromolar GI50 values) against human breast cancer cell lines (MCF-7 and MDA-MB-231) and a pancreatic cancer cell line (PANC-1), although they proved to be ineffective as inhibitors of tubulin polymerization. Molecular docking studies comparing colchicine with the OXi8006-oxetane analogue 5m provided a rationale for the differential interaction of these molecules with the colchicine site on the tubulin heterodimer.
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Affiliation(s)
- Wen Ren
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX 76798-7348, United States
| | - Rebecca Vairin
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX 76798-7348, United States
| | - Jacob D Ward
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX 76798-7348, United States
| | - Ricardo Francis
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX 76798-7348, United States
| | - Jenny VanNatta
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX 76798-7348, United States
| | - Ruoli Bai
- Molecular Pharmacology Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health, Frederick, MD 21702, United States
| | - Pouguiniseli E Tankoano
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX 76798-7348, United States
| | - Yuling Deng
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX 76798-7348, United States
| | - Ernest Hamel
- Molecular Pharmacology Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health, Frederick, MD 21702, United States
| | - Mary Lynn Trawick
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX 76798-7348, United States
| | - Kevin G Pinney
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place, No. 97348, Waco, TX 76798-7348, United States.
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Guo Y, Wang H, Gerberich JL, Odutola SO, Charlton-Sevcik AK, Li M, Tanpure RP, Tidmore JK, Trawick ML, Pinney KG, Mason RP, Liu L. Imaging-Guided Evaluation of the Novel Small-Molecule Benzosuberene Tubulin-Binding Agent KGP265 as a Potential Therapeutic Agent for Cancer Treatment. Cancers (Basel) 2021; 13:cancers13194769. [PMID: 34638255 PMCID: PMC8507561 DOI: 10.3390/cancers13194769] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/10/2021] [Accepted: 09/17/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Vascular-disrupting agents promise significant therapeutic efficacy against solid tumors by selectively damaging tumor-associated vasculature. Dynamic BLI and oxygen-enhanced multispectral optoacoustic tomography (OE-MSOT) were used to compare vascular shutdown following administration of KGP265. BLI signal and vascular oxygenation response (ΔsO2) to a gas breathing challenge were both significantly reduced within 2 h indicating vascular disruption, which continued over 24 h. Twice-weekly doses of KGP265 caused a significant growth delay in MDA-MB-231 human breast tumor xenografts and 4T1 syngeneic breast tumors growing orthotopically in mice. Abstract The selective disruption of tumor-associated vasculature represents an attractive therapeutic approach. We have undertaken the first in vivo evaluation of KGP265, a water-soluble prodrug of a benzosuberene-based tubulin-binding agent, and found promising vascular-disrupting activity in three distinct tumor types. Dose escalation in orthotopic MDA-MB-231-luc breast tumor xenografts in mice indicated that higher doses produced more effective vascular shutdown, as revealed by dynamic bioluminescence imaging (BLI). In syngeneic orthotopic 4T1-luc breast and RENCA-luc kidney tumors, dynamic BLI and oxygen enhanced multispectral optoacoustic tomography (OE-MSOT) were used to compare vascular shutdown following the administration of KGP265 (7.5 mg/kg). The BLI signal and vascular oxygenation response (ΔsO2) to a gas breathing challenge were both significantly reduced within 2 h, indicating vascular disruption, which continued over 24 h. A correlative histology confirmed increased necrosis and hemorrhage. Twice-weekly doses of KGP265 caused significant growth delay in both MDA-MB-231 and 4T1 breast tumors, with no obvious systemic toxicity. A combination with carboplatin produced significantly greater tumor growth delay than carboplatin alone, though significant carboplatin-associated toxicity was observed (whole-body weight loss). KGP265 was found to be effective at low concentrations, generating long-term vascular shutdown and tumor growth delay, thus providing strong rationale for further development, particularly in combination therapies.
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Affiliation(s)
- Yihang Guo
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (Y.G.); (H.W.); (J.L.G.); (M.L.)
- Department of Gastrointestinal Surgery, The Third XiangYa Hospital of Central South University, Changsha 410013, China
| | - Honghong Wang
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (Y.G.); (H.W.); (J.L.G.); (M.L.)
- Department of Medical Ultrasound, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jeni L. Gerberich
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (Y.G.); (H.W.); (J.L.G.); (M.L.)
| | - Samuel O. Odutola
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA; (S.O.O.); (A.K.C.-S.); (R.P.T.); (J.K.T.); (M.L.T.); (K.G.P.)
| | - Amanda K. Charlton-Sevcik
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA; (S.O.O.); (A.K.C.-S.); (R.P.T.); (J.K.T.); (M.L.T.); (K.G.P.)
| | - Maoping Li
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (Y.G.); (H.W.); (J.L.G.); (M.L.)
- Department of Ultrasound, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Rajendra P. Tanpure
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA; (S.O.O.); (A.K.C.-S.); (R.P.T.); (J.K.T.); (M.L.T.); (K.G.P.)
| | - Justin K. Tidmore
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA; (S.O.O.); (A.K.C.-S.); (R.P.T.); (J.K.T.); (M.L.T.); (K.G.P.)
| | - Mary Lynn Trawick
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA; (S.O.O.); (A.K.C.-S.); (R.P.T.); (J.K.T.); (M.L.T.); (K.G.P.)
| | - Kevin G. Pinney
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA; (S.O.O.); (A.K.C.-S.); (R.P.T.); (J.K.T.); (M.L.T.); (K.G.P.)
| | - Ralph P. Mason
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (Y.G.); (H.W.); (J.L.G.); (M.L.)
- Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Correspondence: (R.P.M.); (L.L.)
| | - Li Liu
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (Y.G.); (H.W.); (J.L.G.); (M.L.)
- Simmons Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
- Correspondence: (R.P.M.); (L.L.)
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Liu L, O’Kelly D, Schuetze R, Carlson G, Zhou H, Trawick ML, Pinney KG, Mason RP. Non-Invasive Evaluation of Acute Effects of Tubulin Binding Agents: A Review of Imaging Vascular Disruption in Tumors. Molecules 2021; 26:2551. [PMID: 33925707 PMCID: PMC8125421 DOI: 10.3390/molecules26092551] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 04/15/2021] [Accepted: 04/19/2021] [Indexed: 12/16/2022] Open
Abstract
Tumor vasculature proliferates rapidly, generally lacks pericyte coverage, and is uniquely fragile making it an attractive therapeutic target. A subset of small-molecule tubulin binding agents cause disaggregation of the endothelial cytoskeleton leading to enhanced vascular permeability generating increased interstitial pressure. The resulting vascular collapse and ischemia cause downstream hypoxia, ultimately leading to cell death and necrosis. Thus, local damage generates massive amplification and tumor destruction. The tumor vasculature is readily accessed and potentially a common target irrespective of disease site in the body. Development of a therapeutic approach and particularly next generation agents benefits from effective non-invasive assays. Imaging technologies offer varying degrees of sophistication and ease of implementation. This review considers technological strengths and weaknesses with examples from our own laboratory. Methods reveal vascular extent and patency, as well as insights into tissue viability, proliferation and necrosis. Spatiotemporal resolution ranges from cellular microscopy to single slice tomography and full three-dimensional views of whole tumors and measurements can be sufficiently rapid to reveal acute changes or long-term outcomes. Since imaging is non-invasive, each tumor may serve as its own control making investigations particularly efficient and rigorous. The concept of tumor vascular disruption was proposed over 30 years ago and it remains an active area of research.
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Affiliation(s)
- Li Liu
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (L.L.); (D.O.); (R.S.); (H.Z.)
| | - Devin O’Kelly
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (L.L.); (D.O.); (R.S.); (H.Z.)
| | - Regan Schuetze
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (L.L.); (D.O.); (R.S.); (H.Z.)
| | - Graham Carlson
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA; (G.C.); (M.L.T.); (K.G.P.)
| | - Heling Zhou
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (L.L.); (D.O.); (R.S.); (H.Z.)
| | - Mary Lynn Trawick
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA; (G.C.); (M.L.T.); (K.G.P.)
| | - Kevin G. Pinney
- Department of Chemistry and Biochemistry, Baylor University, Waco, TX 76798, USA; (G.C.); (M.L.T.); (K.G.P.)
| | - Ralph P. Mason
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; (L.L.); (D.O.); (R.S.); (H.Z.)
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CuSO4/sodium ascorbate catalysed synthesis of benzosuberone and 1,2,3-triazole conjugates: Design, synthesis and in vitro anti-proliferative activity. JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2019.05.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Niu H, Strecker TE, Gerberich JL, Campbell JW, Saha D, Mondal D, Hamel E, Chaplin DJ, Mason RP, Trawick ML, Pinney KG. Structure Guided Design, Synthesis, and Biological Evaluation of Novel Benzosuberene Analogues as Inhibitors of Tubulin Polymerization. J Med Chem 2019; 62:5594-5615. [PMID: 31059248 DOI: 10.1021/acs.jmedchem.9b00551] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A promising design paradigm for small-molecule inhibitors of tubulin polymerization that bind to the colchicine site draws structural inspiration from the natural products colchicine and combretastatin A-4 (CA4). Our previous studies with benzocycloalkenyl and heteroaromatic ring systems yielded promising inhibitors with dihydronaphthalene and benzosuberene analogues featuring phenolic (KGP03 and KGP18) and aniline (KGP05 and KGP156) congeners emerging as lead agents. These molecules demonstrated dual mechanism of action, functioning both as potent vascular disrupting agents (VDAs) and as highly cytotoxic anticancer agents. A further series of analogues was designed to extend functional group diversity and investigate regioisomeric tolerance. Ten new molecules were effective inhibitors of tubulin polymerization (IC50 < 5 μM) with seven of these exhibiting highly potent activity comparable to CA4, KGP18, and KGP03. For one of the most effective agents, dose-dependent vascular shutdown was demonstrated using dynamic bioluminescence imaging in a human prostate tumor xenograft growing in a rat.
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Affiliation(s)
- Haichan Niu
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place, No. 97348 , Waco , Texas 76798-7348 , United States
| | - Tracy E Strecker
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place, No. 97348 , Waco , Texas 76798-7348 , United States
| | - Jeni L Gerberich
- Department of Radiology , The University of Texas Southwestern Medical Center , 5323 Harry Hines Boulevard , Dallas , Texas 75390-9058 , United States
| | - James W Campbell
- Department of Radiology , The University of Texas Southwestern Medical Center , 5323 Harry Hines Boulevard , Dallas , Texas 75390-9058 , United States
| | - Debabrata Saha
- Department of Radiology Oncology, Division of Molecular Radiation Biology , The University of Texas Southwestern Medical Center , 2201 Inwood Road , Dallas , Texas 75390-9187 , United States
| | - Deboprosad Mondal
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place, No. 97348 , Waco , Texas 76798-7348 , United States
| | - Ernest Hamel
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis , National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health , Frederick , Maryland 21702 , United States
| | - David J Chaplin
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place, No. 97348 , Waco , Texas 76798-7348 , United States.,Mateon Therapeutics, Inc. , 701 Gateway Boulevard, Suite 210 , South San Francisco , California 94080 , United States
| | - Ralph P Mason
- Department of Radiology , The University of Texas Southwestern Medical Center , 5323 Harry Hines Boulevard , Dallas , Texas 75390-9058 , United States
| | - Mary Lynn Trawick
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place, No. 97348 , Waco , Texas 76798-7348 , United States
| | - Kevin G Pinney
- Department of Chemistry and Biochemistry , Baylor University , One Bear Place, No. 97348 , Waco , Texas 76798-7348 , United States
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Mondal D, Niu H, Pinney KG. Efficient Synthetic Methodology for the Construction of Dihydronaphthalene and Benzosuberene Molecular Frameworks. Tetrahedron Lett 2018; 60:397-401. [PMID: 31061544 DOI: 10.1016/j.tetlet.2018.12.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Benzosuberene analogues (1 and 2) and dihydronaphthalene analogues (3 and 4) function as potent inhibitors of tubulin polymerization, demonstrate pronounced cytotoxicity (low nM to pM range) against human cancer cell lines, and are promising vascular disrupting agents (VDAs). As such, these compounds represent lead anticancer agents with potential translatability towards the clinic. Methodology previously established by us (and others) facilitated synthetic access to a variety of structural and functional group modifications necessary to explore structure activity relationship considerations directed towards the development of these (and related) molecules as potential therapeutic agents. During the course of these studies it became apparent that the availability of synthetic methodology to facilitate direct conversion of the phenolic-based compounds to their corresponding aniline congeners would be beneficial. Accordingly, modified synthetic routes toward these target phenols (benzosuberene 1 and dihydronaphthalene 3) were developed in order to improve scalability and overall yield [45-57% (1) and 32% (3)]. Moreover, benzosuberene-based phenolic analogue 1 and separately dihydronaphthalene-based phenolic analogue 3 were successfully converted into their corresponding aniline analogues 2 and 4 in good yield (>60% over three steps) using a palladium catalyzed amination reaction.
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Affiliation(s)
- Deboprosad Mondal
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place # 97348, Waco, Texas 76798-7438, United States
| | - Haichan Niu
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place # 97348, Waco, Texas 76798-7438, United States
| | - Kevin G Pinney
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place # 97348, Waco, Texas 76798-7438, United States
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Kasaboina S, Bollu R, Gomedhika PM, Ramineni V, Nagarapu L, Dumala N, Grover P, Nanubolu JB. A green protocol for one pot synthesis of benzosuberone tethered thiadiazolopyrimidine-6-carboxylates using PEG-400 as potent anti-proliferative agents. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.06.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Dhanaraj P, Devadas A, Muthiah I. A comparative meta-genomic analysis of HPV strains: A step towards the design, synthesis and characterization of noval quenazoline derivative for antiviral activity. Comput Biol Chem 2018; 73:213-220. [DOI: 10.1016/j.compbiolchem.2018.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 02/07/2018] [Accepted: 02/11/2018] [Indexed: 11/30/2022]
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Affiliation(s)
- Haider Behbehani
- Department of Chemistry, Faculty of Science, Kuwait University, Safat, Kuwait
| | - Kamal M. Dawood
- Department of Chemistry, Faculty of Science, Kuwait University, Safat, Kuwait
| | - Thoraya A. Farghaly
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
- Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, Makkah Almukkarramah, Saudi Arabia
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Design, synthesis, and biological evaluation of cyclic-indole derivatives as anti-tumor agents via the inhibition of tubulin polymerization. Eur J Med Chem 2017; 125:663-675. [DOI: 10.1016/j.ejmech.2016.09.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 08/26/2016] [Accepted: 09/18/2016] [Indexed: 12/16/2022]
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Devkota L, Lin CM, Strecker TE, Wang Y, Tidmore JK, Chen Z, Guddneppanavar R, Jelinek CJ, Lopez R, Liu L, Hamel E, Mason RP, Chaplin DJ, Trawick ML, Pinney KG. Design, synthesis, and biological evaluation of water-soluble amino acid prodrug conjugates derived from combretastatin, dihydronaphthalene, and benzosuberene-based parent vascular disrupting agents. Bioorg Med Chem 2016; 24:938-956. [PMID: 26852340 DOI: 10.1016/j.bmc.2016.01.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 12/27/2015] [Accepted: 01/05/2016] [Indexed: 01/21/2023]
Abstract
Targeting tumor vasculature represents an intriguing therapeutic strategy in the treatment of cancer. In an effort to discover new vascular disrupting agents with improved water solubility and potentially greater bioavailability, various amino acid prodrug conjugates (AAPCs) of potent amino combretastatin, amino dihydronaphthalene, and amino benzosuberene analogs were synthesized along with their corresponding water-soluble hydrochloride salts. These compounds were evaluated for their ability to inhibit tubulin polymerization and for their cytotoxicity against selected human cancer cell lines. The amino-based parent anticancer agents 7, 8, 32 (also referred to as KGP05) and 33 (also referred to as KGP156) demonstrated potent cytotoxicity (GI50=0.11-40nM) across all evaluated cell lines, and they were strong inhibitors of tubulin polymerization (IC50=0.62-1.5μM). The various prodrug conjugates and their corresponding salts were investigated for cleavage by the enzyme leucine aminopeptidase (LAP). Four of the glycine water-soluble AAPCs (16, 18, 44 and 45) showed quantitative cleavage by LAP, resulting in the release of the highly cytotoxic parent drug, whereas partial cleavage (<10-90%) was observed for other prodrugs (15, 17, 24, 38 and 39). Eight of the nineteen AAPCs (13-16, 42-45) showed significant cytotoxicity against selected human cancer cell lines. The previously reported CA1-diamine analog and its corresponding hydrochloride salt (8 and 10, respectively) caused extensive disruption (at a concentration of 1.0μM) of human umbilical vein endothelial cells growing in a two-dimensional tubular network on matrigel. In addition, compound 10 exhibited pronounced reduction in bioluminescence (greater than 95% compared to saline control) in a tumor bearing (MDA-MB-231-luc) SCID mouse model 2h post treatment (80mg/kg), with similar results observed upon treatment (15mg/kg) with the glycine amino-dihydronaphthalene AAPC (compound 44). Collectively, these results support the further pre-clinical development of the most active members of this structurally diverse collection of water-soluble prodrugs as promising anticancer agents functioning through a mechanism involving vascular disruption.
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Affiliation(s)
- Laxman Devkota
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Chen-Ming Lin
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Tracy E Strecker
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Yifan Wang
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Justin K Tidmore
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Zhi Chen
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Rajsekhar Guddneppanavar
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Christopher J Jelinek
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Ramona Lopez
- Department of Radiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9058, United States
| | - Li Liu
- Department of Radiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9058, United States
| | - Ernest Hamel
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health, Frederick, MD 21702, United States
| | - Ralph P Mason
- Department of Radiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9058, United States
| | - David J Chaplin
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States.,OXiGENE Inc., 701 Gateway Boulevard, Suite 210, South San Francisco, California 94080, United States
| | - Mary Lynn Trawick
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Kevin G Pinney
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
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Herdman CA, Devkota L, Lin CM, Niu H, Strecker TE, Lopez R, Liu L, George CS, Tanpure RP, Hamel E, Chaplin DJ, Mason RP, Trawick ML, Pinney KG. Structural interrogation of benzosuberene-based inhibitors of tubulin polymerization. Bioorg Med Chem 2015; 23:7497-520. [PMID: 26775540 PMCID: PMC4828293 DOI: 10.1016/j.bmc.2015.10.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 10/01/2015] [Accepted: 10/10/2015] [Indexed: 11/16/2022]
Abstract
The discovery of 3-methoxy-9-(30,40,50-trimethoxyphenyl)-6,7-dihydro-5H-benzo[7]annulen-4-ol (a benzosuberene-based analogue referred to as KGP18) was originally inspired by the natural products colchicine and combretastatin A-4 (CA4). The relative structural simplicity and ease of synthesis of KGP18, coupled with its potent biological activity as an inhibitor of tubulin polymerization and its cytotoxicity (in vitro) against human cancer cell lines, has resulted in studies focused on new analogue design and synthesis. Our goal was to probe the relationship of structure to function in this class of anticancer agents. A series of twenty-two new benzosuberene-based analogues of KGP18 was designed and synthesized. These compounds vary in their methoxylation pattern and separately incorporate trifluoromethyl groups around the pendant aryl ring for the evaluation of the effect of functional group modifications on the fused six-membered aromatic ring. In addition, the 8,9-saturated congener of KGP18 has been synthesized to assess the necessity of unsaturation at the carbon atom bearing the pendant aryl ring. Six of the molecules from this benzosuberene-series of compounds were active (IC50 < 5 lM) as inhibitors of tubulin polymerization while four analogues were comparable (IC50 approximately 1 lM) in their tubulin inhibitory activity to CA4 and KGP18. The potency of a bis-trifluoromethyl analogue 74 and the unsaturated KGP18 derivative 73 as inhibitors of tubulin assembly along with their moderate cytotoxicity suggested the potential utility of these compounds as vascular disrupting agents (VDAs) to selectively target microvessels feeding tumors. Accordingly, water-soluble and DMSO-soluble phosphate prodrug salts of each were synthesized for preliminary in vivo studies to assess their potential efficacy as VDAs.
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Affiliation(s)
- Christine A. Herdman
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Laxman Devkota
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Chen-Ming Lin
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Haichan Niu
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Tracy E. Strecker
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Ramona Lopez
- Department of Radiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9058, United States
| | - Li Liu
- Department of Radiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9058, United States
| | - Clinton S. George
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Rajendra P. Tanpure
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Ernest Hamel
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, National Cancer Institute, Frederick National Laboratory for Cancer Research, National Institutes of Health, Frederick, MD 21702, United States
| | - David J. Chaplin
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
- OXiGENE Inc., 701 Gateway Boulevard, Suite 210, South San Francisco, California 94080, United States
| | - Ralph P. Mason
- Department of Radiology, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390-9058, United States
| | - Mary Lynn Trawick
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
| | - Kevin G. Pinney
- Department of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7348, United States
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