Sleep-Deprived Cells Can't Clear Oxidants (IMAGE) Columbia University Irving Medical Center Caption Adequate vs. Poor Sleep. The researchers traced the absence of the antioxidant response in sleep-deprived cells to a cellular factor, NRF2, that becomes trapped in the cytoplasm. When damaging oxidants accumulate in cells, NRF2 usually moves into the nucleus (blue) to turn on the antioxidant response. After chronic sleep restriction (right image) the Cullin3 protein holds NRF2 (yellow) in the cytoplasm. Credit Columbia University Irving Medical Center Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.