(IMAGE) Tokyo Medical and Dental University Caption Mst1 causes the transport of FoxO1 from the cell cytoplasm to the nucleus by phosphorylating it. This is shown by the colocalization of the green and the blue stain when Ad-Mst1 is added. Credit Department of Cardiovascular Medicine, TMDU Usage Restrictions None License Licensed content 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.