By reported procedures,18 (link) protein extraction and Western blotting were performed. The subfamily of pERK is ERK1 (pT202/pY204)+ Erk2 (pT185/pY187) (cat. no ab5001, dilution, 1:10,000; Abcam, Cambridge, MA, USA), the subfamily of ERK is ERK1+ ERK2 (cat. no ab115799, dilution 1:1,000; Abcam). The subfamily of pMEK is MEK1 (pS298) (cat. no ab96379, dilution 1:3,500; Abcam), and the subfamily of pMEK is MEK1 (cat. no ab32091, dilution 1:5,000; Abcam). β-Actin was considered as the internal control. All results were conducted in triplicate.