A, Using the FRET-based mTORC1 activity reporter TORCAR with local inhibition of Akt using the genetically encoded Akt inhibitor, Akt-STOPS, it was found that nuclear Akt signaling regulates nuclear mTORC1 activation through the recruitment of the mTORC1 subunit Raptor.
B, The ERK reporter, ERK KTR, was used to reveal that apoptotic cells induce ERK activity waves in epithelial monolayers. Through optogenetic regulation of ERK activity using OptoFGFR, it was found that these pulses of ERK activity enhance cell survival.