PKCβI is the key event preventing LSD1 from demethylating histone
H3 lysine 4 [75]. Because the mitochondrial biogenesis program is
under the control of a network of nuclear transcription factors and
coregulators, it is likely that PKCβ regulates mitochondrial function by
coordinating mitochondrial and nuclear events. Finally, activated
PKCβ has the potential to indirectly influence other signaling cascades,
including the PI3-kinase/Akt pathway, extracellular signal-regulated
kinase, and the p38 pathway, which can also affect nuclear events
[80–85]. PKCβ may play an integral role in energy homeostasis by translating
metabolic, nutritional, and environmental signals into changes in
gene expression. It is possible that alterations in PKCβ expression play a
central role in how the genome is regulated and how traits are passed
on or eliminated in response to environmental factors as a result of
epigenetic changes.