TIP60 and/or CDK8 Regulate HIF1A (IMAGE) University of Colorado Anschutz Medical Campus Caption University of Colorado Cancer Center study shows how TIP60 and CDK8 cooperate to regulate HIF1A, allowing tumors to survive low-oxygen environments. Credit University of Colorado Cancer Center Usage Restrictions With attribution 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.