A cassette comprised of the Tag:V5 epitope plus the Tag:miGFPi RNAi-effector sequence has been inserted in frame at the C-terminal end of the open reading frame of the lola-PB isoform. The position of the cassette allows for specific knockdown of the lola-PB isoform using an RNAi reagent that targets EGFP.
Expression of Avic\GFPdsRNA.shRNA.Scer\UAS.1 under the control of Scer\GAL4wor.PA in lolaV5.miGFPi.PB homozygotes to knock-down only the lola-PB isoform using the miGFPi method (tagging a gene with a minimal GFP tag and then expressing RNAi against the tag) does not cause overproliferation of neural stem cells in the larval central brain. Similarly, expression of Avic\GFPdsRNA.shRNA.Scer\UAS.1 in lolaV5.miGFPi.all/lolaV5.miGFPi.PB larvae (=effectively knocking down lola-PB only) also does not cause neuroblast overproliferation but when both lola-PD and lola-PB isoforms are knocked-down simultaneously in lolaV5.miGFPi.all/lolaV5.miGFPi.PD,lolaHA.miGFPi.PD larvae, neuroblast overproliferation is observed.