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Malebari AM, Duffy Morales G, Twamley B, Fayne D, Khan MF, McLoughlin EC, O’Boyle NM, Zisterer DM, Meegan MJ. Synthesis, Characterisation and Mechanism of Action of Anticancer 3-Fluoroazetidin-2-ones. Pharmaceuticals (Basel) 2022; 15:ph15091044. [PMID: 36145265 PMCID: PMC9501633 DOI: 10.3390/ph15091044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
The stilbene combretastatin A-4 (CA-4) is a potent microtubule-disrupting agent interacting at the colchicine-binding site of tubulin. In the present work, the synthesis, characterisation and mechanism of action of a series of 3-fluoro and 3,3-difluoro substituted β-lactams as analogues of the tubulin-targeting agent CA-4 are described. The synthesis was achieved by a convenient microwave-assisted Reformatsky reaction and is the first report of 3-fluoro and 3,3-difluoro β-lactams as CA-4 analogues. The β-lactam compounds 3-fluoro-4-(3-hydroxy-4-methoxyphenyl)-1-(3,4,5-trimethoxy phenyl)azetidin-2-one 32 and 3-fluoro-4-(3-fluoro-4-methoxyphenyl)-1-(3,4,5-trimethoxyphenyl)azetidin-2-one) 33 exhibited potent activity in MCF-7 human breast cancer cells with IC50 values of 0.075 µM and 0.095 µM, respectively, and demonstrated low toxicity in non-cancerous cells. Compound 32 also demonstrated significant antiproliferative activity at nanomolar concentrations in the triple-negative breast cancer cell line Hs578T (IC50 0.033 μM), together with potency in the invasive isogenic subclone Hs578Ts(i)8 (IC50 = 0.065 μM), while 33 was also effective in MDA-MB-231 cells (IC50 0.620 μM). Mechanistic studies demonstrated that 33 inhibited tubulin polymerisation, induced apoptosis in MCF-7 cells, and induced a downregulation in the expression of anti-apoptotic Bcl2 and survivin with corresponding upregulation in the expression of pro-apoptotic Bax. In silico studies indicated the interaction of the compounds with the colchicine-binding site, demonstrating the potential for further developing novel cancer therapeutics as microtubule-targeting agents.
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Affiliation(s)
- Azizah M. Malebari
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Trinity Biomedical Sciences Institute, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, D02 R590 Dublin, Ireland
| | - Gabriela Duffy Morales
- Trinity Biomedical Sciences Institute, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, D02 R590 Dublin, Ireland
| | - Brendan Twamley
- School of Chemistry, Trinity College Dublin, Dublin 2, D02 PN40 Dublin, Ireland
| | - Darren Fayne
- Trinity Biomedical Sciences Institute, School of Biochemistry and Immunology, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, D02 R590 Dublin, Ireland
| | - Mohemmed Faraz Khan
- Trinity Biomedical Sciences Institute, School of Biochemistry and Immunology, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, D02 R590 Dublin, Ireland
| | - Eavan C. McLoughlin
- Trinity Biomedical Sciences Institute, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, D02 R590 Dublin, Ireland
| | - Niamh M. O’Boyle
- Trinity Biomedical Sciences Institute, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, D02 R590 Dublin, Ireland
| | - Daniela M. Zisterer
- Trinity Biomedical Sciences Institute, School of Biochemistry and Immunology, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, D02 R590 Dublin, Ireland
| | - Mary J. Meegan
- Trinity Biomedical Sciences Institute, School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, 152-160 Pearse Street, Dublin 2, D02 R590 Dublin, Ireland
- Correspondence:
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Belen’kii LI, Gazieva GA, Evdokimenkova YB, Soboleva NO. The literature of heterocyclic chemistry, Part XX, 2020. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Dohi T. Recent Topics in Organohalogen Reagents and Compounds. CURR ORG CHEM 2020. [DOI: 10.2174/138527282418201106141610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This Special Issue covers the hot topics on recent synthetic interest in halogen and related
chemistry as well as the unique characteristics of halogen compounds. The excellent reviews by the
experts and eminent researchers engaged in the recent advances, i.e., preparations, reactions, and
mechanistic studies of unique organohalogen compounds, halogen bond interaction as the catalysis,
and halogen-controlled unique reactions for synthesizing useful organic molecules, such as
pharmaceutical compounds and organic materials, are provided in this Special Issue.
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Affiliation(s)
- Toshifumi Dohi
- Graduate School of Pharmaceutical Sciences, Ritsumeikan University, 1-1-1 Nojihigahsi, Kusatsu, Shiga 525- 8577, Japan
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