- Norbornene probes for the study of cysteine oxidation
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Cysteine residues on proteins can react with cellular oxidants such as hydrogen peroxide. While this process is important for scavenging excess reactive oxygen species, the products of this oxidation may also mediate cell signalling. To understand the role of cysteine oxidation in biology, selective probes are required to detect and quantify its occurrence. Cysteine oxidation products such as sulfenic acids are sometimes unstable and therefore short-lived. If such cysteine derivatives are to be analysed, rapid reaction with the probe is required. Here we introduce norbornene derivatives as probes for cysteine oxidation, and demonstrate their ability to trap sulfenic acids. The synthesis of norbornene derivatives containing alkyne or biotin affinity tags are also reported to facilitate the use of these probes in chemical biology and proteomics.
- Alcock, Lisa J.,Farrell, Kyle D.,Akol, Mawey T.,Jones, Gregory H.,Tierney, Matthew M.,Kramer, Holger B.,Pukala, Tara L.,Bernardes, Gon?alo J.L.,Perkins, Michael V.,Chalker, Justin M.
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supporting information
p. 1220 - 1228
(2017/11/27)
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- Antiaging Cosmetic Delivery Systems
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The present invention provides a comprehensive solution to the problems associated with natural topical aging via the incorporation of: (i) An Extra-cellular antioxidant or Free-radical neutralizing composition, and (ii) An Intra-cellular antioxidant or Free-radical neutralizing composition, and (iii) An Anti-inflammatory composition, and (iv) A collagen or fibrin boosting composition. It is preferred to also have the above incorporated in a suitable carrier base or topical delivery system for skin, nail, and hair beneficial applications.
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Page/Page column 6
(2008/06/13)
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- Hair Care and Nail Care Compositions Based on Ion-Pair Delivery System for Gender and Ethnic Selective Applications
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This invention relates to a novel ion-pair delivery system useful for gender and ethnic background selective hair care and nail care applications in which an electron donor composition and an electron acceptor composition, or a proton donor composition and a proton acceptor composition, or an anionic and a cationic composition, are combined synergistically. The bioavailability, deposition, functional performance, and consumer aesthetics of the compositions thus combined in such ion-pairs are enhanced synergistically. Hair care compositions, such as shampoo, conditioner, hair lotion, hair oil, hair gel, hair sheen, hair rinse, hair balm, hair wax, hair spray, and such, and nail care compositions, such as nail enamel, nail creams, nail serums, nail lacquers, nail spray, and nail polish, and such, can thus be obtained with synergistically enhanced performance.
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