Wilden, JD and Mavri-Damelin, D and Mani, A-R and Selden, C and Hodgson, HJF and Damelin, LH (2009) The Use of 3-Aminophthalimide as a Pro-Chemiluminescent Label in Chemiluminescence and Fluorescence-Based Cellular Assays. Bioconjugate Chemistry , 20 (2) , Article 10.1021/bc800361r. 10.1021/bc800361r.
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We present a labeling system for direct chemiluminescence-based cellular bioassays using the stable pro-chemiluminescent, luminol precursor, 3-aminophthalimide (API). API-coupled reporter molecules are detected chemiluminometrically after treatment with hydrazine, which converts the API label to luminol. API derivatives containing a variety of functional groups are readily synthesized, allowing for ease of coupling via the imide nitrogen to a host of reporter molecules. The fluorescent nature of APIs further allows for dual fluorescence and chemiluminescence studies. To highlight the utility of this label, we show that API-labeled insulin can be successfully utilized in cellular binding and transport assays and that an API-coupled mitochondrial probe (API−triphenylphosphonium+) can be used to both fluorescently and chemiluminometrically investigate mitochondrial function. We also assess the use of API as a polysaccharide and nucleic acid label, and we show that API-labeled palmitic acid undergoes cellular transport and lipid metabolism.
|Title:||The Use of 3-Aminophthalimide as a Pro-Chemiluminescent Label in Chemiluminescence and Fluorescence-Based Cellular Assays|
|Keywords:||Chemiluminescence, Luminol, API|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry|
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