Proposed working model (IMAGE) University of Maryland Caption Proposed working model. Progerin accumulation induces stress, leading to attenuation of Ang2 expression and secretion and its downstream effector. Ang2-induced activation of Tie2 receptor activates AKT signaling pathways, which improves HGPS ECs NO production, angiogenesis, survival, migration, and secretome. Credit Image courtesy of Sahar Vakili/UMD. Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA 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.