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A facile method to clickable sensing polymeric nanoparticles (2009)
Journal Article
Welser, K., Perera, M. D., Aylott, J. W., & Chan, W. C. (2009). A facile method to clickable sensing polymeric nanoparticles. Chemical Communications, 6601-6603. https://doi.org/10.1039/b914358k

Clickable biocompatible nanoparticles were prepared in a one-pot process by microemulsion polymerization using acrylamide, N,N′-methylene bisacrylamide and either N-(11-azido-3,6,9-trioxaundecanyl)acrylamide or N-propargylacrylamide, which were then... Read More about A facile method to clickable sensing polymeric nanoparticles.

Facile synthesis of responsive nanoparticles with reversible, tunable and rapid thermal transitions from biocompatible constituents (2009)
Journal Article
Abulateefeh, S. R., Saeed, A. O., Aylott, J. W., Chan, W. C., Garnett, M. C., Saunders, B. R., & Alexander, C. (2009). Facile synthesis of responsive nanoparticles with reversible, tunable and rapid thermal transitions from biocompatible constituents. Chemical Communications, 6068-6070. https://doi.org/10.1039/b911986h

Responsive polymeric nanoparticles composed of hybrid block co-polymers were prepared from biocompatible components that displayed rapid, tunable and multiply reversible transitions in response to change of temperature. © 2009 The Royal Society of Ch... Read More about Facile synthesis of responsive nanoparticles with reversible, tunable and rapid thermal transitions from biocompatible constituents.

Protease responsive nanoprobes with tethered fluorogenic peptidyl 3-arylcoumarin substrates (2008)
Journal Article
Welser, K., Grilj, J., Vauthey, E., Aylott, J. W., & Chan, W. C. (2009). Protease responsive nanoprobes with tethered fluorogenic peptidyl 3-arylcoumarin substrates. Chemical Communications, 671-673. https://doi.org/10.1039/b816637d

Protease responsive nanosensors were obtained by the attachment of unique green fluorescent bifunctional 3-arylcoumarin-derived fluorogenic substrates to poly(acrylamide-co-N-(3-aminopropyl)methacrylamide) nanoparticles, in which proteolysis results... Read More about Protease responsive nanoprobes with tethered fluorogenic peptidyl 3-arylcoumarin substrates.

A macroporous polymer-supported cyclic anhydride for efficient sequestration of amines (2008)
Journal Article
Sanna, M., White, P. D., & Chan, W. C. (2008). A macroporous polymer-supported cyclic anhydride for efficient sequestration of amines. Tetrahedron Letters, 49(42), 6160-6162. https://doi.org/10.1016/j.tetlet.2008.08.038

The efficient removal of primary and secondary amines from organic solutions using a macroporous polymer-supported anhydride is described. The sequestering of primary amines by the anhydride via polymer-bound amide formation is completed within 2-4 h... Read More about A macroporous polymer-supported cyclic anhydride for efficient sequestration of amines.

Differential Recognition of Staphylococcus aureus Quorum-Sensing Signals Depends on Both Extracellular Loops 1 and 2 of the Transmembrane Sensor AgrC (2008)
Journal Article
Jensen, R. O., Winzer, K., Clarke, S. R., Chan, W. C., & Williams, P. (2008). Differential Recognition of Staphylococcus aureus Quorum-Sensing Signals Depends on Both Extracellular Loops 1 and 2 of the Transmembrane Sensor AgrC. Journal of Molecular Biology, 381(2), 300-309. https://doi.org/10.1016/j.jmb.2008.06.018

Virulence in Staphylococcus aureus is regulated via agr-dependent quorum sensing in which an autoinducing peptide (AIP) activates AgrC, a histidine protein kinase. AIPs are usually thiolactones containing seven to nine amino acid residues in which th... Read More about Differential Recognition of Staphylococcus aureus Quorum-Sensing Signals Depends on Both Extracellular Loops 1 and 2 of the Transmembrane Sensor AgrC.

Targeting of polyamidoamine-DNA nanoparticles using the Staudinger ligation: Attachment of an RGD motif either before or after complexation (2008)
Journal Article
Parkhouse, S. M., Garnett, M. C., & Chan, W. C. (2008). Targeting of polyamidoamine-DNA nanoparticles using the Staudinger ligation: Attachment of an RGD motif either before or after complexation. Bioorganic and Medicinal Chemistry, 16(13), 6641-6650. https://doi.org/10.1016/j.bmc.2008.05.023

Two new methods for the modular synthesis of targeted gene delivery systems are reported. The PEGylated polyamidoamine DMEDA-PEG-DMEDA-(MBA-DMEDA)n+1-PEG-DMEDA 3 was sequentially modified to contain an integrin-binding peptide ligand via the Stauding... Read More about Targeting of polyamidoamine-DNA nanoparticles using the Staudinger ligation: Attachment of an RGD motif either before or after complexation.

Molecular mechanism of target recognition by subtilin, a class I lanthionine antibiotic (2008)
Journal Article
Parisot, J., Carey, S., Breukink, E., Chan, W. C., Narbad, A., & Bonev, B. (2008). Molecular mechanism of target recognition by subtilin, a class I lanthionine antibiotic. Antimicrobial Agents and Chemotherapy, 52(2), 612-618. https://doi.org/10.1128/AAC.00836-07

The increasing resistance of human pathogens to conventional antibiotics presents a growing threat to the chemotherapeutic management of infectious diseases. The lanthionine antibiotics, still unused as therapeutic agents, have recently attracted sig... Read More about Molecular mechanism of target recognition by subtilin, a class I lanthionine antibiotic.

Look who's talking: Communication and quorum sensing in the bacterial world (2007)
Journal Article
Williams, P., Winzer, K., Chan, W. C., & Cámara, M. (2007). Look who's talking: Communication and quorum sensing in the bacterial world. Philosophical Transactions B: Biological Sciences, 362(1483), 1119-1134. https://doi.org/10.1098/rstb.2007.2039

For many years bacteria were considered primarily as autonomous unicellular organisms with little capacity for collective behaviour. However, we now appreciate that bacterial cells are in fact, highly communicative. The generic term 'quorum sensing'... Read More about Look who's talking: Communication and quorum sensing in the bacterial world.

Antigenicity of chimeric and cyclic synthetic peptides based on nonstructural proteins of GBV-C/HGV (2005)
Journal Article
Pérez, T., Ercilla, G., Chan, W. C., & Haro, I. (2006). Antigenicity of chimeric and cyclic synthetic peptides based on nonstructural proteins of GBV-C/HGV. Journal of Peptide Science, 12(4), 267-278. https://doi.org/10.1002/psc.719

In this work, new putative epitopes located in nonstructural proteins of GBV-C/HGV were synthesized using solid-phase chemistry for their use in immunoassays. The antigens were obtained in linear, chimeric and cyclic forms with the main aim of improv... Read More about Antigenicity of chimeric and cyclic synthetic peptides based on nonstructural proteins of GBV-C/HGV.

Discovery of antagonist peptides against bacterial helicase-primase interaction in B. stearothermophilus by reverse yeast three-hybrid (2005)
Journal Article
Gardiner, L., Coyle, B. J., Chan, W. C., & Soultanas, P. (2005). Discovery of antagonist peptides against bacterial helicase-primase interaction in B. stearothermophilus by reverse yeast three-hybrid. Cell Chemistry Biology, 12(5), 595-604. https://doi.org/10.1016/j.chembiol.2005.04.007

Developing small-molecule antagonists against protein-protein interactions will provide powerful tools for mechanistic/functional studies and the discovery of new antibacterials. We have developed a reverse yeast three-hybrid approach that allows hig... Read More about Discovery of antagonist peptides against bacterial helicase-primase interaction in B. stearothermophilus by reverse yeast three-hybrid.

Modulation of pRb/E2F functions in the regulation of cell cycle and in cancer (2005)
Journal Article
Seville, L. L., Shah, N., Westwell, A. D., & Chan, W. C. (2005). Modulation of pRb/E2F functions in the regulation of cell cycle and in cancer. Current Cancer Drug Targets, 5(3), 159-170. https://doi.org/10.2174/1568009053765816

Cell proliferation is regulated by the cell cycle, and in order to divide the cell must enter a mitotic state. Prior to mitosis the cell is required to pass through a number of checkpoints, including the critical G1/S restriction point governed by th... Read More about Modulation of pRb/E2F functions in the regulation of cell cycle and in cancer.

Expedient synthesis of a novel class of pseudoaromatic amino acids: Tetrahydroindazol-3-yl- and tetrahydrobenzisoxazol-3-ylalanine derivatives (2003)
Journal Article
Middleton, R. J., Mellor, S. L., Chhabra, S. R., Bycroft, B. W., & Chan, W. C. (2004). Expedient synthesis of a novel class of pseudoaromatic amino acids: Tetrahydroindazol-3-yl- and tetrahydrobenzisoxazol-3-ylalanine derivatives. Tetrahedron Letters, 45(6), 1237-1242. https://doi.org/10.1016/j.tetlet.2003.11.133

A concise synthesis of novel homochiral aromatic amino acid surrogates comprising a tetrahydroindazole or a benzisoxazole system was developed via the acylation of a cyclic 1,3-diketone by the side-chain carboxyl functionality of either Boc-Asp-OtBu... Read More about Expedient synthesis of a novel class of pseudoaromatic amino acids: Tetrahydroindazol-3-yl- and tetrahydrobenzisoxazol-3-ylalanine derivatives.

Side-chain-to-tail thiolactone peptide inhibitors of the staphylococcal quorum-sensing system (2003)
Journal Article
Scott, R. J., Lian, L. Y., Muharram, S. H., Cockayne, A., Wood, S. J., Bycroft, B. W., …Chan, W. C. (2003). Side-chain-to-tail thiolactone peptide inhibitors of the staphylococcal quorum-sensing system. Bioorganic and Medicinal Chemistry Letters, 13(15), 2449-2453. https://doi.org/10.1016/S0960-894X%2803%2900497-9

The expression of many staphylococcal virulence factors are regulated by the agr locus via a two-component signal transduction system (TCSTS), which is activated in response to a secreted autoinducer peptide (AIP). By exploiting the unique chemical a... Read More about Side-chain-to-tail thiolactone peptide inhibitors of the staphylococcal quorum-sensing system.

Liposome entrapment and immunogenic studies of a synthetic lipophilic multiple antigenic peptide bearing VP1 and VP3 domains of the hepatitis A virus: A robust method for vaccine design (2003)
Journal Article
Haro, I., Pérez, S., García, M., Chan, W. C., & Ercilla, G. (2003). Liposome entrapment and immunogenic studies of a synthetic lipophilic multiple antigenic peptide bearing VP1 and VP3 domains of the hepatitis A virus: A robust method for vaccine design. FEBS Letters, 540(1-3), 133-140. https://doi.org/10.1016/S0014-5793%2803%2900249-7

Multiple antigen peptides (MAP) have been demonstrated to be efficient immunological reagents for the induction of immune responses to a variety of infectious agents. Several peptide domains of the hepatitis A virus (HAV) capsid proteins, mainly VP1... Read More about Liposome entrapment and immunogenic studies of a synthetic lipophilic multiple antigenic peptide bearing VP1 and VP3 domains of the hepatitis A virus: A robust method for vaccine design.

Nasal immunization with homogenate and peptide antigens induces protective immunity against Trichinella spiralis (2002)
Journal Article
McGuire, C., Chan, W. C., & Wakelin, D. (2002). Nasal immunization with homogenate and peptide antigens induces protective immunity against Trichinella spiralis. Infection and Immunity, 70(12), 7149-7152. https://doi.org/10.1128/IAI.70.12.7149-7152.2002

Mice were successfully immunized against the intestinal nematode Trichinella spiralis by intranasal administration of a 30-mer peptide antigen with cholera toxin B. Immunized mice developed antigen-specific serum immunoglobulin G1, intestinal immunog... Read More about Nasal immunization with homogenate and peptide antigens induces protective immunity against Trichinella spiralis.

Peptide inhibitors of CDK2-cyclin A that target the cyclin recruitment-Site: Structural variants of the C-Terminal Phe (2002)
Journal Article
Atkinson, G. E., Cowan, A., McInnes, C., Zheleva, D. I., Fischer, P. M., & Chan, W. C. (2002). Peptide inhibitors of CDK2-cyclin A that target the cyclin recruitment-Site: Structural variants of the C-Terminal Phe. Bioorganic and Medicinal Chemistry Letters, 12(18), 2501-2505. https://doi.org/10.1016/S0960-894X%2802%2900508-5

A focused series of octapeptides based on the lead compound H-His-Ala-Lys-Arg-Arg-Leu-Ile-Phe-NH2 1, in which the C-terminal phenylalanine residue was replaced by α and/or β-modified variants, was synthesized using solid-phase chemistry. Both the L-t... Read More about Peptide inhibitors of CDK2-cyclin A that target the cyclin recruitment-Site: Structural variants of the C-Terminal Phe.

Homochiral 4-azalysine building blocks: Syntheses and applications in solid-phase chemistry (2002)
Journal Article
Chhabra, S. R., Mahajan, A., & Chan, W. C. (2002). Homochiral 4-azalysine building blocks: Syntheses and applications in solid-phase chemistry. Journal of Organic Chemistry, 67(12), 4017-4029. https://doi.org/10.1021/jo010456e

Anomalous amino acids not only play central roles as mimics of natural amino acids but also offer opportunities as unique building blocks for combinatorial chemistry. This paper describes the chiral syntheses and solid-phase applications of a versati... Read More about Homochiral 4-azalysine building blocks: Syntheses and applications in solid-phase chemistry.

Human defensin 5 is stored in precursor form in normal Paneth cells and is expressed by some villous epithelial cells and by metaplastic Paneth cells in the colon in inflammatory bowel disease (2001)
Journal Article
Cunliffe, R. N., Rose, F. R., Keyte, J., Abberley, L., Chan, W. C., & Mahida, Y. R. (2001). Human defensin 5 is stored in precursor form in normal Paneth cells and is expressed by some villous epithelial cells and by metaplastic Paneth cells in the colon in inflammatory bowel disease. Gut, 48(2), 176-185. https://doi.org/10.1136/gut.48.2.176

Background and aims - Intestinal epithelial cell derived antimicrobial peptides of the defensin family may play a major role in host defence against microorganisms. Our aims were to (i) isolate, characterise, and investigate the processing of human d... Read More about Human defensin 5 is stored in precursor form in normal Paneth cells and is expressed by some villous epithelial cells and by metaplastic Paneth cells in the colon in inflammatory bowel disease.