Protein kinase Cε(PKCε)is a transforming oncogene and plays an important role in many cellular processing.In the present paper

we review the development of experimental researches on the acute-chronic pain transformation.Results indicated that prostaglandin E2(PGE2)/EP1 receptor-Gq-PKCε is an important signaling pathway to modulate chronic pain in peripheral dorsal root ganglion(DRG)neurons

and also plays a role in the later stage of hyperalgesia during transformation from acute to chronic pain.PKCεin DRG neurons induces mechanical and thermal hypersensitivity respectively by over expression of transient receptor potential vanilloid 1(TRPV1)and TRP ankyrin-1(TRPA1)

further mediating the transformation from acute to chronic pain.Whereas

PGE2-evoked activation of EP1-Gq-PKCεsignaling may be the key link in initiating the pain translation process through regulating downstream TRPA1 and TRPV1.Electroacupuncture(EA)has been used to effectively relieving various types of acute and chronic pain for decades

and can significantly inhibit the expression of PKCεand its upstream and downstream molecules.Therefore

it can be inferred that there exists a possibility of EA interventions in interfering the transformation from acute to chronic pain by regulating peripheral PKCε signaling pathway.