...before. But other enzymatic fusions, such as dCas9-TET, can, like the iron ball-and-chain that they resemble...there are a number of drawbacks to this approach:
TET proteins are not demethylases; they are dioxygenases...Szyf 2021, Charlton et al. 2020).
Most importantly, TET proteins affect transcription independent of their...2018, Kaas et al. 2013).
Figure 2: CRISPR TET-based epigenetic editing. In reality, editing your...demethylation can be achieved by dCas9 alone, without TET (or any demethylase) fusion. This may seem counterintuitive...demethylation without the confounds inherent to dCas9-TET, allowing one to study the causal relationship between...References
Charlton J, Jung EJ, Mattei AL et al. (2020) TETs compete with DNMT3 activity in pluripotent cells...