Total NADP/NADPH, and individual NADP+ and NADPH levels were quantified via commercially available luminescent assay (Promega Corporation, Madison, WI, USA). Briefly, cells were seeded into a Corning™ 96-well White Microplate at a previously optimised 15,000 cells/well and treated as above. The assay was run as per the manufacture’s guidelines following the modified protocol for separate measurement of cellular NADP+ and NADPH with luminescence read at 30 and 60 min using an Infinite® M200 PRO Plate reader (Tecan, Männedorf, Germany). Data was recorded and analysed in Microsoft® Excel® (2013, v7) and normalised against total cellular protein following BCA protein assay on the same plate.
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