1
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Cano ME, Jara WE, Cagnoni AJ, Brizzio E, Strumia MC, Repetto E, Uhrig ML. The disulfide bond as a key motif for the construction of multivalent glycoclusters. NEW J CHEM 2022. [DOI: 10.1039/d2nj03071c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
S-Glycosylated dendrons having a thioacetate group in their focal points led to multivalent glycoclusters by spontaneous O2-oxidation of sulfides.
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Affiliation(s)
- María Emilia Cano
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
| | - Walter Emiliano Jara
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
| | - Alejandro J. Cagnoni
- Laboratorio de Glicómica Funcional y Molecular, Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas, C1428ADN Buenos Aires, Argentina
| | - Emmanuel Brizzio
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
| | - Miriam C. Strumia
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Química Orgánica. Av. Haya de la Torre esq. Av. Medina Allende, Córdoba, X5000HUA, Argentina
- CONICET, Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada (IPQA). Av. Velez Sárfield 1611, Córdoba, X5000HUA, Argentina
| | - Evangelina Repetto
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
| | - María Laura Uhrig
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
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2
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Yan W, Divandari M, Rosenboom JG, Ramakrishna SN, Trachsel L, Spencer ND, Morgese G, Benetti EM. Design and characterization of ultrastable, biopassive and lubricious cyclic poly(2-alkyl-2-oxazoline) brushes. Polym Chem 2018. [DOI: 10.1039/c7py02137b] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Bilayer films featuring cyclic, poly(2-alkyl-2-oxazoline) brush interfaces display excellent biopassivity, lubrication and long-term stability in chemically harsh aqueous environments.
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Affiliation(s)
- Wenqing Yan
- Laboratory for Surface Science and Technology
- Department of Materials
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - Mohammad Divandari
- Laboratory for Surface Science and Technology
- Department of Materials
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - Jan-Georg Rosenboom
- Institute for Chemical and Bioengineering
- Department of Chemistry and Applied Biosciences
- ETH Zürich
- 8093 Zürich
- Switzerland
| | | | - Lucca Trachsel
- Laboratory for Surface Science and Technology
- Department of Materials
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - Nicholas D. Spencer
- Laboratory for Surface Science and Technology
- Department of Materials
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - Giulia Morgese
- Laboratory for Surface Science and Technology
- Department of Materials
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - Edmondo M. Benetti
- Laboratory for Surface Science and Technology
- Department of Materials
- ETH Zürich
- 8093 Zürich
- Switzerland
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3
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Tipping WJ, Lee M, Serrels A, Brunton VG, Hulme AN. Imaging drug uptake by bioorthogonal stimulated Raman scattering microscopy. Chem Sci 2017; 8:5606-5615. [PMID: 30155229 PMCID: PMC6103005 DOI: 10.1039/c7sc01837a] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 05/15/2017] [Indexed: 12/15/2022] Open
Abstract
Stimulated Raman scattering (SRS) microscopy in tandem with bioorthogonal Raman labelling enables intracellular drug concentrations, distribution and therapeutic response to be measured in living cells.
Stimulated Raman scattering (SRS) microscopy in tandem with bioorthogonal Raman labelling strategies is set to revolutionise the direct visualisation of intracellular drug uptake. Rational evaluation of a series of Raman-active labels has allowed the identification of highly active labels which have minimal perturbation on the biological efficacy of the parent drug. Drug uptake has been correlated with markers of cellular composition and cell cycle status, and mapped across intracellular structures using dual-colour and multi-modal imaging. The minimal phototoxicity and low photobleaching associated with SRS microscopy has enabled real-time imaging in live cells. These studies demonstrate the potential for SRS microscopy in the drug development process.
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Affiliation(s)
- William J Tipping
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, David Brewster Road , Edinburgh , EH9 3FJ , UK . .,Edinburgh Cancer Research Centre , Institute of Genetics and Molecular Medicine , The University of Edinburgh , Crewe Road South , Edinburgh , EH4 2XR , UK .
| | - Martin Lee
- Edinburgh Cancer Research Centre , Institute of Genetics and Molecular Medicine , The University of Edinburgh , Crewe Road South , Edinburgh , EH4 2XR , UK .
| | - Alan Serrels
- Edinburgh Cancer Research Centre , Institute of Genetics and Molecular Medicine , The University of Edinburgh , Crewe Road South , Edinburgh , EH4 2XR , UK .
| | - Valerie G Brunton
- Edinburgh Cancer Research Centre , Institute of Genetics and Molecular Medicine , The University of Edinburgh , Crewe Road South , Edinburgh , EH4 2XR , UK .
| | - Alison N Hulme
- EaStCHEM School of Chemistry , The University of Edinburgh , Joseph Black Building, David Brewster Road , Edinburgh , EH9 3FJ , UK .
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4
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Trindade AF, Frade RFM, Maçôas EMS, Graça C, Rodrigues CAB, Martinho JMG, Afonso CAM. "Click and go": simple and fast folic acid conjugation. Org Biomol Chem 2014; 12:3181-90. [PMID: 24723199 DOI: 10.1039/c4ob00150h] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Folic acid targeting by functionalization of the terminal γ-carboxylic acid is one of the most important strategies to selectively deliver chemotherapeutics and dyes to cancer cells which overexpress folate receptors. However, conjugation of folic acid is limited by its unique solubility and by selectivity issues imposing the need for expensive preparative reverse-phase chromatographic purification to isolate γ-folate conjugates. Herein is provided a novel synthetic tool for the synthesis of new folic acid conjugates with excellent γ-purity based on strain-promoted alkyne-azide cycloadditions with a γ-folate-cyclooctyne conjugate 3. To demonstrate the potential of this methodology several new folate conjugates were synthesized with high γ-purity and without using any type of chromatographic purification by reacting conjugate 3 with several fluorescent probes, polymers and siliceous materials bearing azide. In addition, the cycloaddition reaction between conjugate 3 and an azido-derived fluorescent dye was successfully performed in cellular media leading to an increase of fluorescence in the cells which overexpress folate receptors (NCI-H460).
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Affiliation(s)
- Alexandre F Trindade
- CQFM, Centro de Química-Física Molecular, IN-Institute of Nanosciences and Nanotechnology, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
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5
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Structure determination of bis{(4Z)-1-(2-azidoethyl)-4-[(pyridin-2-yl)methylidene]-2-thiolatoimidazol-5(4H)-one}dicopper chloride from X-ray powder diffraction data. Russ Chem Bull 2014. [DOI: 10.1007/s11172-013-0090-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Ghosh B, Jones LH. Target validation using in-cell small molecule clickable imaging probes. MEDCHEMCOMM 2014. [DOI: 10.1039/c3md00277b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The application of click chemistry to the visualization of chemical probes in in-cell chemical biology experiments is reviewed and the influence this research has had on target validation and molecular mode of action studies is also highlighted.
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Affiliation(s)
| | - Lyn H. Jones
- Pfizer
- Chemical Biology Group
- BioTherapeutics Chemistry
- WorldWide Medicinal Chemistry
- Cambridge
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7
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Microbial transglutaminase displays broad acyl-acceptor substrate specificity. Appl Microbiol Biotechnol 2013; 98:219-30. [PMID: 23615739 DOI: 10.1007/s00253-013-4886-x] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 03/20/2013] [Accepted: 03/30/2013] [Indexed: 10/26/2022]
Abstract
The great importance of amide bonds in industrial synthesis has encouraged the search for efficient catalysts of amide bond formation. Microbial transglutaminase (MTG) is heavily utilized in crosslinking proteins in the food and textile industries, where the side chain of a glutamine reacts with the side chain of a lysine, forming a secondary amide bond. Long alkylamines carrying diverse chemical entities can substitute for lysine as acyl-acceptor substrates, to link molecules of interest onto peptides or proteins. Here, we explore short and chemically varied acyl-acceptor substrates, to better understand the nature of nonnatural substrates that are tolerated by MTG, with the aim of diversifying biocatalytic applications of MTG. We show, for the first time, that very short-chain alkyl-based amino acids such as glycine can serve as acceptor substrates. The esterified α-amino acids Thr, Ser, Cys, and Trp--but not Ile--also showed reactivity. Extending the search to nonnatural compounds, a ring near the amine group--particularly if aromatic--was beneficial for reactivity, although ring substituents reduced reactivity. Overall, amines attached to a less hindered carbon increased reactivity. Importantly, very small amines carrying either the electron-rich azide or the alkyne groups required for click chemistry were highly reactive as acyl-acceptor substrates, providing a robust route to minimally modified, "clickable" peptides. These results demonstrate that MTG is tolerant to a variety of chemically varied natural and nonnatural acyl-acceptor substrates, which broadens the scope for modification of Gln-containing peptides and proteins.
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8
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Itoh H, Inoue M. Structural permutation of potent cytotoxin, polytheonamide B: discovery of cytotoxic Peptide with altered activity. ACS Med Chem Lett 2013; 4:52-6. [PMID: 24900563 DOI: 10.1021/ml300264c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Accepted: 11/01/2012] [Indexed: 01/05/2023] Open
Abstract
Polytheonamide B (1) is an ion-channel forming natural peptide with a d,l-alternating 48 amino acid sequence, which is an exceedingly potent cytotoxin. We recently designed and synthesized a simplified dansylated polytheonamide mimic 2, in which six amino acid residues were modified from 1, and demonstrated that 2 emulated the functions of 1. Here we report a comprehensive structure-activity relationship study of substructures of 2. A unified synthetic strategy was developed for highly automated syntheses of 13 peptide sequences of 27 to 39 amino acid residues, and the artificial 37-mer peptide 6 was discovered to be significantly more toxic than the other 12 compounds toward P388 mouse leukemia cells (IC50 = 3.7 nM). Ion exchange activity experiments of 6 using the liposome and P388 cells both demonstrated that 6 did not possess ion-channel activity, strongly suggesting that 6 exerted its potent cytoxicity through a distinct mode of action from 1 and 2.
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Affiliation(s)
- Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033,
Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033,
Japan
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9
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Itoh H, Matsuoka S, Kreir M, Inoue M. Design, Synthesis and Functional Analysis of Dansylated Polytheonamide Mimic: An Artificial Peptide Ion Channel. J Am Chem Soc 2012; 134:14011-8. [DOI: 10.1021/ja303831a] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Hiroaki Itoh
- Graduate School of Pharmaceutical
Sciences, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shigeru Matsuoka
- Graduate School of Pharmaceutical
Sciences, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
| | - Mohamed Kreir
- Nanion Technologies GmbH, Gabrielenstrasse 9, D-80636 Munich, Germany
| | - Masayuki Inoue
- Graduate School of Pharmaceutical
Sciences, The University of Tokyo, Hongo,
Bunkyo-ku, Tokyo 113-0033, Japan
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10
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Long TR, Faisal S, Maity PK, Rolfe A, Kurtz R, Klimberg SV, Najjar MR, Basha FZ, Hanson PR. "Click"-capture, ring-opening metathesis polymerization (ROMP), release: facile triazolation utilizing ROMP-derived oligomeric phosphates. Org Lett 2011; 13:2038-41. [PMID: 21434675 PMCID: PMC3098766 DOI: 10.1021/ol200430c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Soluble, high-load ring-opening metathesis polymerization (ROMP)-derived oligomeric triazole phosphates (OTP) are reported for application as efficient triazolating reagents of nucleophilic species. Utilizing a "Click"-capture, ROMP, release protocol, the efficient and purification-free, direct triazolation of N-, O-, and S-nucleophilic species was successfully achieved. A variety of OTP derivatives were rapidly synthesized as free-flowing solids on a multigram scale from commercially available materials.
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Affiliation(s)
- Toby R. Long
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS, 66045 and The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, KS, 66047
| | - Saqib Faisal
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS, 66045 and The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, KS, 66047
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Science, University of Karachi, Karachi, Pakistan
| | - Pradip K. Maity
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS, 66045 and The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, KS, 66047
| | - Alan Rolfe
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS, 66045 and The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, KS, 66047
| | - Ryan Kurtz
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS, 66045 and The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, KS, 66047
| | - Sarra V. Klimberg
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS, 66045 and The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, KS, 66047
| | - Muhammad-Rabbie Najjar
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS, 66045 and The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, KS, 66047
| | - Fatima Z. Basha
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Science, University of Karachi, Karachi, Pakistan
| | - Paul R. Hanson
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS, 66045 and The University of Kansas Center for Chemical Methodologies and Library Development (KU-CMLD), 2034 Becker Drive, Delbert M. Shankel Structural Biology Center, Lawrence, KS, 66047
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11
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Cunningham CW, Mukhopadhyay A, Lushington GH, Blagg BSJ, Prisinzano TE, Krise JP. Uptake, distribution and diffusivity of reactive fluorophores in cells: implications toward target identification. Mol Pharm 2010; 7:1301-10. [PMID: 20557111 DOI: 10.1021/mp100089k] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There is much recent interest in the application of copper-free click chemistry to study a wide range of biological events in vivo and in vitro. Specifically, azide-conjugated fluorescent probes can be used to identify targets which have been modified with bioorthogonal reactive groups. For intracellular applications of this chemistry, the structural and physicochemical properties of the fluorescent azide become increasingly important. Ideal fluorophores should extensively accumulate within cells, have even intracellular distribution, and be free (unbound), allowing them to efficiently participate in bimolecular reactions. We report here on the synthesis and evaluation of a set of structurally diverse fluorescent probes to examine their potential usefulness in intracellular click reactions. Total cellular uptake and intracellular distribution profiles were comparatively assessed using both quantitative and qualitative approaches. The intracellular diffusion coefficients were measured using a fluorescence recovery after photobleaching (FRAP)-based method. Many reactive fluorophores exhibited suboptimal properties for intracellular reactions. BODIPY- and TAMRA-based azides had superior cellular accumulation, whereas TAMRA-based probes had the most uniform intracellular distribution and best cytosolic diffusivity. Collectively, these results provide an unbiased comparative evaluation regarding the suitability of azide-linked fluorophores for intracellular click reactions.
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Affiliation(s)
- Christopher W Cunningham
- Department of Medicinal Chemistry and Pharmaceutical Chemistry, Molecular Graphics and Modeling Laboratory, and Specialized Chemistry Center, University of Kansas, Lawrence, Kansas, USA
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12
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Morales-Sanfrutos J, Lopez-Jaramillo FJ, Hernandez-Mateo F, Santoyo-Gonzalez F. Vinyl Sulfone Bifunctional Tag Reagents for Single-Point Modification of Proteins. J Org Chem 2010; 75:4039-47. [DOI: 10.1021/jo100324p] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Julia Morales-Sanfrutos
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Francisco Javier Lopez-Jaramillo
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Fernando Hernandez-Mateo
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
| | - Francisco Santoyo-Gonzalez
- Departamento de Química Orgánica, Facultad de Ciencias, Instituto de Biotecnología, Universidad de Granada, 18071 Granada, Spain
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13
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Urankar D, Steinbücher M, Kosjek J, Košmrlj J. N-(Propargyl)diazenecarboxamides for ‘click’ conjugation and their 1,3-dipolar cycloadditions with azidoalkylamines in the presence of Cu(II). Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.02.042] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Wyatt EE, Galloway WRJD, Thomas GL, Welch M, Loiseleur O, Plowright AT, Spring DR. Identification of an anti-MRSA dihydrofolate reductase inhibitor from a diversity-oriented synthesis. Chem Commun (Camb) 2008:4962-4. [PMID: 18931753 DOI: 10.1039/b812901k] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The screening of a diversity-oriented synthesis library followed by structure-activity relationship investigations have led to the discovery of an anti-MRSA agent which operates as an inhibitor of Staphylococcus aureus dihydrofolate reductase.
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Affiliation(s)
- Emma E Wyatt
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK
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15
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Graça Martins J, Cambeiro Barrulas P, Marques CS, Burke AJ. New Route to N‐Alkylated trans‐Pyrrolidine Diols from 2,2,3,3‐Tetramethoxybutane‐Protected Dimethyl Tartrate. SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910801916520] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- J. Graça Martins
- a Chemistry Department and Évora Chemistry Centre , University of Évora , Évora , Portugal
| | - P. Cambeiro Barrulas
- a Chemistry Department and Évora Chemistry Centre , University of Évora , Évora , Portugal
| | - Carolina S. Marques
- a Chemistry Department and Évora Chemistry Centre , University of Évora , Évora , Portugal
| | - Anthony J. Burke
- a Chemistry Department and Évora Chemistry Centre , University of Évora , Évora , Portugal
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16
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Inverarity IA, Viguier RFH, Cohen P, Hulme AN. Biotinylated anisomycin: a comparison of classical and "click" chemistry approaches. Bioconjug Chem 2007; 18:1593-603. [PMID: 17705414 DOI: 10.1021/bc070085u] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two approaches to the synthesis of biotinylated derivatives of the stress-activated protein kinase (SAPK) pathway activator anisomycin have been investigated. Attachment of the biotin moiety to the central core was achieved either through the use of a classical displacement reaction on alpha-halo carbonyl derivatives of biotin or through a copper(I)-catalyzed 1,3-dipolar Huisgen cycloaddition ("click") coupling of biotinylated azides to propargyl-marked analogues of anisomycin. In each case, the resultant N-linked molecular probes were found to be active in SAPK pathway immunoblot assays, while their O-linked counterparts were inactive. However, in sharp contrast to the classical coupling approach which results in low coupling yields, the aqueous "click" coupling process was found to deliver high yields of biotinylated probes, making it the conjugation method of choice. A survey of the available methods for the addition of a propargyl marker onto a range of chemical functionalities strongly suggests that this copper(I)-catalyzed 1,3-dipolar Huisgen cycloaddition approach to biotinylation may be generally applied.
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Affiliation(s)
- Iain A Inverarity
- The School of Chemistry, University of Edinburgh, Kings Buildings, West Mains Road, Edinburgh, EH9 3JJ, United Kingdom
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17
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Fuwa H, Takahashi Y, Konno Y, Watanabe N, Miyashita H, Sasaki M, Natsugari H, Kan T, Fukuyama T, Tomita T, Iwatsubo T. Divergent synthesis of multifunctional molecular probes to elucidate the enzyme specificity of dipeptidic gamma-secretase inhibitors. ACS Chem Biol 2007; 2:408-18. [PMID: 17530731 DOI: 10.1021/cb700073y] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Divergent synthesis of multifunctional molecular probes based on caprolactam-derived dipeptidic gamma-secretase inhibitors (GSIs), Compound E (CE) and LY411575 analogue (DBZ), was efficiently accomplished by means of Cu(I)-catalyzed azide/alkyne fusion reaction. Photoaffinity labeling experiments using these derivatives coupled to photoactivatable and biotin moieties provided direct evidence that the molecular targets of CE and DBZ are the N-terminal fragment of presenilin 1 within the gamma-secretase complex. Moreover, these photoprobes directly targeted signal peptide peptidase. These data suggest that the divergent synthesis of molecular probes has been successfully applied to characterize the interaction of GSIs with their molecular targets and define the structural requirements for inhibitor binding to intramembrane-cleaving proteases.
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Affiliation(s)
- Haruhiko Fuwa
- Laboratory of Biostructural Chemistry, Graduate School of Life Sciences, Tohoku University, Tsutsumidori-Amamiya, Aoba-ku, Sendai, Japan.
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