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Gibault F, Bailly F, Corvaisier M, Coevoet M, Huet G, Melnyk P, Cotelle P. Molecular Features of the YAP Inhibitor Verteporfin: Synthesis of Hexasubstituted Dipyrrins as Potential Inhibitors of YAP/TAZ, the Downstream Effectors of the Hippo Pathway. ChemMedChem 2017; 12:954-961. [PMID: 28334506 DOI: 10.1002/cmdc.201700063] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/17/2017] [Indexed: 12/22/2022]
Abstract
Porphyrin derivatives, in particular verteporfin (VP), a photosensitizer initially designed for cancer therapy, have been identified as inhibitors of the YAP-TEAD interaction and transcriptional activity. Herein we report the efficient convergent synthesis of the dipyrrin half of protoporphyrin IX dimethyl ester (PPIX-DME), in which the sensitive vinyl group was created at the final stage by a dehydroiodination reaction. Two other dipyrrin derivatives were synthesized, including dipyrrin 19 [(Z)-2-((3,5-dimethyl-4-vinyl-2H-pyrrol-2-ylidene)methyl)-3,5-dimethyl-4-vinyl-1H-pyrrole], containing two vinyl groups. We found that VP and dipyrrin 19 showed significant inhibitory effects on TEAD transcriptional activity in MDA-MB-231 human breast cancer cells, whereas other compounds did not show significant changes. In addition, we observed a marked decrease in both YAP and TAZ levels following VP treatment, whereas dipyrrin 19 treatment primarily decreased the levels of YAP and receptor kinase AXL, a downstream target of YAP. Together, our data suggest that, due to their chemical structures, porphyrin- and dipyrrin-related derivatives can directly target YAP and/or TAZ proteins and inhibit TEAD transcriptional activity.
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Affiliation(s)
- Floriane Gibault
- Department of Onco and NeuroChemistry, University of Lille, INSERM UMR-S 1172, Jean-Pierre Aubert Research Center, 3, rue du professeur Laguesse, BP 83, 59006, Lille Cedex, France
| | - Fabrice Bailly
- Department of Onco and NeuroChemistry, University of Lille, INSERM UMR-S 1172, Jean-Pierre Aubert Research Center, 3, rue du professeur Laguesse, BP 83, 59006, Lille Cedex, France
| | - Matthieu Corvaisier
- Department of Mucins, Epithelial Differentiation and Carcinogenesis, University of Lille, INSERM UMR-S 1172, Jean-Pierre Aubert Research Center, Bâtiment Biserte, 1, place de Verdun, 59045, Lille Cedex, France
| | - Mathilde Coevoet
- Department of Onco and NeuroChemistry, University of Lille, INSERM UMR-S 1172, Jean-Pierre Aubert Research Center, 3, rue du professeur Laguesse, BP 83, 59006, Lille Cedex, France
| | - Guillemette Huet
- Department of Mucins, Epithelial Differentiation and Carcinogenesis, University of Lille, INSERM UMR-S 1172, Jean-Pierre Aubert Research Center, Bâtiment Biserte, 1, place de Verdun, 59045, Lille Cedex, France
| | - Patricia Melnyk
- Department of Onco and NeuroChemistry, University of Lille, INSERM UMR-S 1172, Jean-Pierre Aubert Research Center, 3, rue du professeur Laguesse, BP 83, 59006, Lille Cedex, France
| | - Philippe Cotelle
- Department of Onco and NeuroChemistry, University of Lille, INSERM UMR-S 1172, Jean-Pierre Aubert Research Center, 3, rue du professeur Laguesse, BP 83, 59006, Lille Cedex, France
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Melanson JA, Smithen DA, Cameron TS, Thompson A. Microwave-assisted reduction of F-BODIPYs and dipyrrins to generate dipyrromethanes. CAN J CHEM 2014. [DOI: 10.1139/cjc-2013-0341] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The reduction of BODIPYs and dipyrrins to dipyrromethanes, via a reaction involving ethylene glycol and sodium methoxide, is reported. When benzyl alcohol is used in place of ethylene glycol, the addition of 2,4-dinitrophenylhydrazine to the reaction mixture after microwave irradiation results in the production of 1-benzylidene-2-(2,4-dinitrophenyl)hydrazone, indicating concomitant production of aldehyde alongside the dipyrromethane.
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Affiliation(s)
- Jennifer A. Melanson
- Department of Chemistry, Dalhousie University, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
| | - Deborah A. Smithen
- Department of Chemistry, Dalhousie University, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
| | - T. Stanley Cameron
- Department of Chemistry, Dalhousie University, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
| | - Alison Thompson
- Department of Chemistry, Dalhousie University, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
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McDonagh AF, Boiadjiev SE, Lightner DA. Slipping Past UGT1A1 and Multidrug Resistance-Associated Protein 2 in the Liver: Effects of Steric Compression and Hydrogen Bonding on the Hepatobiliary Elimination of Synthetic Bilirubins. Drug Metab Dispos 2008; 36:930-6. [DOI: 10.1124/dmd.107.019778] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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MacLean PD, Drake EC, Ross L, Barclay C. Bilirubin as an antioxidant in micelles and lipid bilayers: its contribution to the total antioxidant capacity of human blood plasma. Free Radic Biol Med 2007; 43:600-9. [PMID: 17640570 DOI: 10.1016/j.freeradbiomed.2007.05.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2007] [Revised: 05/11/2007] [Accepted: 05/12/2007] [Indexed: 10/23/2022]
Abstract
The antioxidant capacities, antioxidant activities, k(inh), and stoichiometric factors, n, of water-soluble derivatives of bilirubin (BR), BR-human serum albumin (BR-HSA), and BR-ditaurate disodium conjugate (BRC) were determined in aqueous/lipid dispersions of sodium dodecyl sulfate (SDS) micelles/methyl linoleate and in bilayers of dilinoleoylphosphatidylcholine (DLPC) during initiation by water-soluble azo-bis-amidinopropane dihydrochloride (ABAP). The inhibition rate constants for BRC and BR-HSA were similar in micelles (k(inh) approximately 1.3 x 10(4) M(-1) s(-1)), where n approximately 2, whereas the k(inh) for BR-HSA dropped by (1/2) in bilayers. The dimethyl ester of bilirubin (BRDE) gave a k(inh) only one-tenth that of the vitamin E analog, pentamethylhydroxychroman (PMHC) in SDS micelles/methyl linoleate when initiated by lipid-soluble azo-bis-2,4-dimethylvaleronitrile (DMVN). Biliverdin hydrochloride (BVHCl) was NOT an effective peroxyl radical-trapping agent in the micellar phase during initiation by ABAP or DMVN containing methyl linoleate but it inhibited oxygen uptake in the aqueous phase. Both BRC and BR-HSA extended the total radical antioxidant parameter (TRAP) of human blood plasma and their contribution to TRAP was in the range of 5-10% of the natural TRAP of blood plasma, depending on the BR content determined in the blood plasma.
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Affiliation(s)
- Patricia D MacLean
- Department of Chemistry, Mount Allison University, 63C York Street, Sackville, New Brunswick, Canada E4L 1G8
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Lintuluoto JM, Nakayama K, Setsune JI. Direct determination of absolute configuration of carboxylic acids by cyclooctapyrrole. Chem Commun (Camb) 2006:3492-4. [PMID: 16921422 DOI: 10.1039/b606228h] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Octaphyrin O1 has been found to be an effective sensor for the direct determination of absolute configuration of a variety of carboxylic acids at mM concentrations at room temperature based on CD exciton chirality method.
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Affiliation(s)
- Juha M Lintuluoto
- Department of Chemistry, Graduate School of Science and Technology, Kobe University, 1-1 Rokkodaimachi, Nada-ku, 657-8501, Kobe, Japan.
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Chepelev LL, Beshara CS, MacLean PD, Hatfield GL, Rand AA, Thompson A, Wright JS, Barclay LRC. Polypyrroles as Antioxidants: Kinetic Studies on Reactions of Bilirubin and Biliverdin Dimethyl Esters and Synthetic Model Compounds with Peroxyl Radicals in Solution. Chemical Calculations on Selected Typical Structures. J Org Chem 2005; 71:22-30. [PMID: 16388613 DOI: 10.1021/jo051359e] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Rate constants for hydrogen-atom transfer (HAT) from bilirubin dimethyl ester (BRDE) and biliverdin dimethyl ester (BVDE) to peroxyl radicals during inhibited autoxidation of styrene initiated by azo-bisisobutyronitrile (AIBN) were k(inh)(BRDE) = 22.5 x 10(4) and k(inh)(BVDE) = 10.2 x 10(4) M(-1) s(-1), and the stoichiometric factors (n) were 2.0 and 2.7, respectively. A synthetic tetrapyrrole (bis(dipyrromethene)) containing the alpha-central (2,2') CH2 linkage gave k(inh) = 39.9 x 10(4) M(-1) s(-1) and n = 2.3, whereas the beta-linked (3,3') isomer was not an active antioxidant. Several dipyrrinones were synthesized as mimics of the two outer heterocyclic rings of bilirubin and biliverdin. The dipyrrinones containing N-H groups in each ring were active antioxidants, whereas those lacking two such "free" N-H groups, such as N-CH3 dipyrrinones and dipyrromethenes, did not exhibit antioxidant activity. Overall, the relative k(inh) values compared to those of phenolic antioxidants, 2,6-di-tert-butyl-4-methoxyphenol (DBHA) and 2,6-di-tert-butyl-4-methylphenol (BHT), were 2,2'-bis(dipyrromethene) > BRDE > DBHA > dipyrrinones > BVDE > BHT. This general trend in antioxidant activities was also observed for the inhibited autoxidation of cumene initiated by AIBN. Chemical calculations of the N-H bond dissociation enthalpies (BDEs) of the typical structures support a HAT mechanism from N-H groups to trap peroxyl radicals. Intramolecular hydrogen bonding of intermediate nitrogen radicals has a major influence on the antioxidant activities of all compounds studied. Indeed, chemical calculations showed that the initial nitrogen radical from a dipyrrinone is stabilized by 9.0 kcal/mol because of H-bonding between the N-H remaining on one ring and the ground-state pyrrolyl radical of the adjacent ring in the natural zusammen structure. The calculated minimum structure of bilirubin shows strong intramolecular H-bonding of the N-H groups with carbonyl groups resulting in the known "ridge-tile" structure which is not an active HAT antioxidant. The calculated minimum structure of biliverdin is planar. BRDE is readily converted into BVDE by reaction with the electron-deficient DPPH* radical under argon in chlorobenzene. An electron-transfer mechanism is proposed for the initiating step in this reaction, and this is supported by the relatively low ionizing potential of a model dipyrrole representing the two central rings of bilirubin.
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Affiliation(s)
- Leonid L Chepelev
- Department of Chemistry, Carleton University, Ottawa, Ontario, Canada K1S 5B6
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Boiadjiev SE, Lightner DA. Exciton chirality in trans-1,2-diamidocyclohexanes: fluorescent chromophores. Chirality 2005; 17:316-22. [PMID: 15856434 DOI: 10.1002/chir.20170] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
N,N'-Carbonyl-bridged dipyrrinones constitute a new class of highly fluorescent chromophores suitable for investigations of stereochemistry and absolute configuration. Xanthoglow (N,N'-carbonylxanthobilirubic acid) diamides of trans-1,2-diaminocyclohexane are strongly fluorescent (phiF=0.37, lambdaem=500 nm, lambdaex=419 nm in CHCl3) but exhibit only weak exciton circular dichroism (CD). In contrast, the diamide of (1R,2R)-diaminocyclohexane from the xanthoglow analogue whose propionic acid has been replaced by benzoic acid (N,N'-carbonyl-8-(4-carboxyphenyl)-3-ethyl-2,7,9-trimethyl-(10H)-dipyrrin-1-one) exhibits even stronger fluorescence (phiF=0.62, lambdaem=495 nm, lambdaex=422 nm in CHCl3) and UV-visible absorption (epsilon=41,600 dm3.mol-1.cm-1 at 424 nm) in organic solvents. Its exciton CD (Deltaepsilon=-13 dm3.mol-1.cm-1, lambda=432 nm; Deltaepsilon=+2 dm3.mol-1.cm-1, lambda=382 nm) correlates with the exciton chirality rule.
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Affiliation(s)
- Stefan E Boiadjiev
- Chemistry Department, University of Nevada, Reno, Nevada 89557-0020, USA
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