[Duller-Finite]

Glp and G9a are ubiquitous as they are import epigenetic regulators (histone methyltransferases). Sounds difficult to work on, and hard to supplement if they play an important role in many cell types

[halukakin]

Yes, it turns out GLP is a very important protein. The second paper I cited above makes it sound it is pretty easy to supplement mice with GLP.