Expression of the MYB gene is stimulated by binding of the RUNX1-containing TAL1 complex to the MYB gene enhancer (Sanda et al. 2012, Mansour et al. 2014). MYB transcription factor encoded by the MYB gene can bind to the RUNX1-containing TAL1 complex at the MYB gene enhancer to further facilitate MYB gene expression, thus creating a positive feedback loop (Mansour et al. 2014). In addition, somatic mutations at the TAL1 gene enhancer enable binding of the TAL1 complex containing MYB, RUNX1 and MYB-associated histone acetyltransferase CBP (CREBBP) to the TAL1 gene enhancer, creating a super-enhancer, which further amplifies the positive feedback loop involved in the MYB gene regulation (Mansour et al. 2014).
Sanda, T, Lawton, LN, Barrasa, MI, Fan, ZP, Kohlhammer, H, Gutierrez, A, Ma, W, Tatarek, J, Ahn, Y, Kelliher, MA, Jamieson, CH, Staudt, LM, Young, RA, Look, AT
Mansour, MR, Abraham, BJ, Anders, L, Berezovskaya, A, Gutierrez, A, Durbin, AD, Etchin, J, Lawton, L, Sallan, SE, Silverman, LB, Loh, ML, Hunger, SP, Sanda, T, Young, RA, Look, AT
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