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. 2021 Sep 6;40(42):6093–6102. doi: 10.1038/s41388-021-02001-2

Fig. 4. Changes in ATAC-Seq experiment with single fusion proteins and co-expression of both fusion proteins.

Fig. 4

A Circos plots of ATAC-Seq experiments with inducible MLL-AF4, inducible AF4-MLL, or the combination of constitutive MLL-AF4 in combination with inducible AF4-MLL reveal that the combination of constitutive MLL-AF4 and 48 h AF4-MLL demonstrated again the long-term impact on chromatin of this particular combination. Inducible transgenes were expressed only for 48 h and analyzed on day 3 and day 28 (inducible transgenes shut down for 25 days). B Analysis of de novo genes and shut-down genes by the DAGE/ST module. Several thousand genes were found to be induced or completely repressed by the expression of the tested t(4;11) fusion proteins. These signatures obtained at the individual timepoints were traced during the 4 weeks of the experiment and displayed by different colors (day 0 signature = blue; day 3 signature = green; day 12 signature = red; day 28 signature is orange). These analyses revealed a clonal evolutionary process that could very likely have been triggered by the expression of AF4-MLL on days 1–3.