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l-Buthionine Sulfoximine Detection and Quantification in Polyurea Dendrimer Nanoformulations

l-Buthionine Sulfoximine Detection and Quantification in Polyurea Dendrimer Nanoformulations

Pedro Mota, Rita F Pires, Jacinta Serpa, Vasco D B Bonifácio

Molecules. 2019 Aug 27;24(17):3111.

PMID: 31461931

Abstract:

l-Buthionine sulfoximine (l-BSO) is an adjuvant drug that is reported to increase the sensitivity of cancer cells to neoplastic agents. Dendrimers are exceptional drug delivery systems and l-BSO nanoformulations are envisaged as potential chemotherapeutics. The absorption of l-BSO at a low wavelength limits its detection by conventional analytical tools. A simple and sensitive method for l-BSO detection and quantification is now reported. In this study, l-BSO was encapsulated in a folate-targeted generation four polyurea dendrimer (PUREG4-FA2) and its release profile was followed for 24 h at pH 7.4 and 37 °C. The protocol uses in situ l-BSO derivatization, by the formation of a catechol-derived orto-quinone, followed by visible detection of the derivative at 503 nm. The structure of the studied l-BSO derivative was assessed by NMR spectroscopy.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP83730534	L-Buthionine-sulfoximine		83730-53-4	Price

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