The lariat RNA debranching enzyme DBR1 enhances HIF-1 signaling and chemoresistance at the expense of lariat RNA processing.
Severely hypoxic microenvironments that induce cell-cycle arrest and chemoresistance are frequently found within solid tumors. Since hypoxia-inducible factor 1 (HIF-1) serves as a central transcription factor for cellular adaptation to oxygen deprivation, identification of novel regulators of HIF-1 activity may provide...