Deasy R.E.,University College Cork |
Moody T.S.,Almac |
Maguire A.R.,University College Cork
Tetrahedron Asymmetry | Year: 2013
Hydrolase-catalysed kinetic resolutions to provide enantioenriched α-substituted 3-aryl alkanoic acids are described. (S)-2-Methyl-3- phenylpropanoic acid (S)-1a was prepared in 96% ee by Pseudomonas fluorescens catalysed ester hydrolysis, while, Candida antarctica lipase B (immob) resolved the α-ethyl substituted 3-arylalkanoic acid (R)-1b in 82% ee. The influence of the position of the substituent relative to the ester site on the efficiency and enantioselectivity of the biotransformation is also explored; the same lipases were found to resolve both the α- and β-substituted alkanoic acids. Furthermore, the steric effect of substituents at the C2 stereogenic centre relative to that for their C3 substituted counterparts on the efficiency and stereoselectivity is discussed.
F1000Research | Year: 2012
Next-generation sequencing technologies are increasingly being applied in clinical settings, however the data are characterized by a range of platform-specific artifacts making downstream analysis problematic and error- prone. One major application of NGS is in the profiling of clinically relevant mutations whereby sequences are aligned to a reference genome and potential mutations assessed and scored. Accurate sequence alignment is pivotal in reliable assessment of potential mutations however selection of appropriate alignment tools is a non-trivial task complicated by the availability of multiple solutions each with its own performance characteristics. Using targeted analysis of BRCA1 as an example, we have simulated and mutated a test dataset based on Illumina sequencing technology. Our findings reveal key differences in the abilities of a range of common commercial and open source alignment tools to facilitate accurate downstream detection of a range of mutations. These observations will be of importance to anyone using NGS to profile mutations in clinical or basic research. © 2012 Oliver GR.
Baud D.,University College London |
Ladkau N.,University College London |
Moody T.S.,Almac |
Ward J.M.,University College London |
Hailes H.C.,University College London
Chemical Communications | Year: 2015
A new colorimetric method has been developed to screen transaminases using an inexpensive amine donor. The assay is sensitive, has a low level of background coloration, and can be used to identify and profile transaminase activities against aldehyde and ketone substrates in a high-throughput format. Significantly it is also amendable to solid phase colony screening. © The Royal Society of Chemistry.
Current radiopharmaceuticals | Year: 2013
Targeted alpha therapy (TAT) is an investigational procedure which utilises monoclonal antibodies (mAbs), peptide conjugates and/or other chemical compounds. These bio-vectors are able to transport a dose of alpha particles to destroy cancer cells. Radionuclide antibody-conjugates (RACs), labelled with beta emitters, have already been used in humans. More recently, TAT has been introduced to treat oncological diseases mainly leukaemia and lymphoma. Encouraging results have also been obtained in solid neoplasms with the administration of anti-tenascin. This chimeric antibody labelled with astatine-211 was delivered in patients with recurrent brain tumours into a surgically created cavity. Conversely, a clinical trial using a standard TAT approach to treat patients with metastatic melanoma, observed the shrinkage of the solid tumour mass. This response in melanoma may lead to an alternative mechanism for TAT, called tumour-antivascular- alpha-therapy (TAVAT), and forms the basis of a novel approach to the treatment of cancer disease states. In this paper, we will concentrate mainly on the application of TAT using antibodies. In particular, an investigation into the major general features connected with the use of alpha emitters in cancer therapy will be discussed. The prospective role of TAT with RACs will also be outlined briefly, especially focussing on the most important therapeutic strategies to date based on antibodies radiolabelled with beta emitters.
Wells A.S.,Charnwood Technical Consulting Ltd |
Wong J.W.,Pharmaceutical science Chemical R and D |
Michels P.C.,Circle Inc. |
Entwistle D.A.,Codexis Inc. |
And 10 more authors.
Organic Process Research and Development | Year: 2016
Biocatalysis is essentially the use of enzymes to perform chemical transformations on organic compounds and has been exploited for applications in various industries including food, fine chemicals, agrochemicals, and pharmaceuticals. Due to their selectivity and ability to operate under mild conditions, enzymes offer clear advantages for efficient sustainable manufacturing processes. Rapid development of enabling technologies including gene mining, molecular biology, biocatalyst evolution, and bioprocess engineering, has created opportunities to use biocatalysis more broadly for the manufacture of small molecule intermediates and APIs (active pharmaceutical ingredients). To facilitate the adoption of biocatalysis for API manufacture and address a perceived lack of regulatory clarity, several of the current authors published a science and risk based approach to ensuring patient safety and drug quality when using biocatalysis (Org. Process Res. Dev. 2012, 16, 1986-1993). Since this publication, consultation of multiple users and stakeholders in the biocatalysis community has expanded on key guidance and specific approaches, as well as providing real examples of regulatory review and approval in this article. Our ultimate goal as highlighted in this publication is to provide a clear path and knowledge base to enable a robust and sound science and risk-based approach for utilizing biocatalysis whenever appropriate for the manufacture of small molecule pharmaceuticals. © 2016 American Chemical Society.