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. 2012 Feb 17;7(2):e30590. doi: 10.1371/journal.pone.0030590

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Subramaniam et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) real-time reverse transcription-PCR analysis of total RNA from TE-7 cells following 30 µM of curcumin treatment for 24 h showed reduction in the expression of Presenilin 1 and Nicastrin mRNA (*p<0.05). (B) lysates from curcumin treatment caused significant reduction in the expression of γ-secretase complex proteins Presenilin 1 and 2, Nicastrin, APH1 and Pen2 protein levels in TE-7 cells. (C) TE-7 cells treated with 30 µM of curcumin for 24 h were subjected to immuno-fluorescent staining using anti-Presenilin 1 and anti-Nicastrin antibodies. Curcumin treatment resulted in lower levels of Presenilin 1 and Nicastrin expression in TE-7cells.