Activation of extracelluar signal-regulated kinase pathway inhibits cytotoxic effect of SW480 cell in response to 5-aminolevulinic acid-based photodynamic therapy
ZHENG Jianghua, et al. Activation of extracelluar signal-regulated kinase pathway inhibits cytotoxic effect of SW480 cell in response to 5-aminolevulinic acid-based photodynamic therapy[J]. Journal of Chongqing Medical University, 2006,(4):482-485.
ZHENG Jianghua, et al. Activation of extracelluar signal-regulated kinase pathway inhibits cytotoxic effect of SW480 cell in response to 5-aminolevulinic acid-based photodynamic therapy[J]. Journal of Chongqing Medical University, 2006,(4):482-485.DOI:
Objective: To investigate extracelluar signal-regulated kinase(ERK) pathway and cytotoxic effect after block of this pathway after 5-aminolevulinic acid(ALA)-based photodynamic therapy(PDT) on SW480 cell.Methods: SW480 was divided into control group
light group
ALA group
ALA-PDT group and PD98059 group.Western blot was used to detect the expression of protein products and phosphorylation protein products of MEK and ERK1/2.Optical density value and survival rate of each group were obtained at different time by MTT.Results: ERK pathway of SW480 cell was activated and block of this pathway increased cytotoxic effect of SW480 cell after ALA-PDT.Conclusions: Activation of ERK pathway protects SW480 cell from ALA-PDT.Block of ERK pathway at different levels may become a new target
which will enhance cytotoxic effect of ALA-PDT on colon carcinoma.