Figure 7.
BIM mediates T-ALL regression following MYC inactivation in vivo. (a and c) One representative rag2:MYC-ER;rag2:EGFP double-transgenic, bim wild-type zebrafish, shown at the time of T-ALL onset (a) and 8 weeks after removal from 4HT (c). (b and d) One rag2:MYC-ER; rag2:EGFP double-transgenic zebrafish that harbored homozygous mutations of bim, shown at time of T-ALL onset (b) and 8 weeks after removal from 4-hydroxytamoxifen (d). (e) Quantitation of T-ALL persistence after downregulation of MYC by removal from 4-hydroxytamoxifen. P value was calculated using a Kruskal-Wallis test. (f) Proposed model to explain our findings.