Journal: Oncology Letters
Article Title: Overexpression of short TRPM8 variant α promotes cell migration and invasion, and decreases starvation-induced apoptosis in prostate cancer LNCaP cells
doi: 10.3892/ol.2015.3373
Figure Lengend Snippet: (A) Western blot analysis indicating that overexpression sM8α-His fusion protein reduced the expression of p-JNK and increased the expression of active MMP-2 (64 kDa) in LNCaP cells. GAPDH was used as the inner control. (B) sM8α-His fusion protein was significantly overexpressed in LNCaP-sM8α cells. (C) The expression of p-JNK protein was significantly reduced in LNCaP-sM8α cells compared with LNCaP and LNCaP-NC cells. However, there were no significant changes in the expression of (D) p-ERK1/2 and (F) p-p38 or (E) full-length TRPM8 protein. (G) MMP-2 was activated, as indicated by upregulation of 64-kDa MMP-2 and downregulation of 72-kDa MMP-2 in LNCaP-sM8α cells. (H) There were no remarkable differences in the expression of MMP-9 in LNCaP, LNCaP-NC and LNCaP-sM8α cells. *P<0.05. NC, negative control; sM8α, short transient receptor potential melastatin 8α; TRPM8, transient receptor potential melastatin 8; p-ERK, phosphorylated-extracellular signal-regulated kinase 1/2; p-JNK, phosphorylated-c-Jun N-terminal kinase; MMP, matrix metalloproteinase; GAPDH, glyceraldehyde phosphate dehydrogenase.
Article Snippet: Primary antibodies against human TRPM8 (rabbit polyclonal; catalog no. ACC-049; Alomone Labs, Jerusalem, Israel; 1:500 dilution), MMP-2 (rabbit monoclonal IgG; catalog no. 13132; Cell Signaling Technology, Inc., Danvers, MA, USA; 1:1,000 dilution), MMP-9 (rabbit monoclonal IgG; catalog no. 13667, Cell Signaling Technology, Inc.; 1:1,000 dilution), GAPDH (rabbit polyclonal IgG; catalog no. sc-25778, Santa Cruz Biotechnology, Inc., Dallas, TX, USA; 1:1000 dilution), MAPK family [rabbit anti-p38, ERK1/2 (p44/42) and JNK (catalog no. 9926), and phospho (p-)p38, p-ERK1/2 and p-JNK (catalog no. 9910); Cell Signaling Technology, Inc.] and His-tag (mouse monoclonal IgG2a; catalog no. D291-3, Medical & Biological Laboratories Co., Ltd., Nagoya, Japan) were applied overnight at 4°C.
Techniques: Western Blot, Over Expression, Expressing, Negative Control