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  • Title: STIM1 silencing inhibits the migration and invasion of A549 cells.
    Author: Wang Y, Wang H, Pan T, Li L, Li J, Yang H.
    Journal: Mol Med Rep; 2017 Sep; 16(3):3283-3289. PubMed ID: 28713917.
    Abstract:
    The present study aimed to explore the effects of stromal interaction molecule 1 (STIM1) knockdown on the migration, invasion and metastasis of A549 cells in vitro and in vivo. Western blotting and immunohistochemistry were used to detect protein expression levels. Wound healing and Transwell invasion assays were used to assess the migratory and invasive abilities of A549 cells transfected with STIM1‑specific short hairpin (sh)RNA (shSTIM1). In addition, a tail vein metastatic assay was performed. The results demonstrated that the frequency of STIM1 high‑expression was significantly increased in metastatic lung cancer tissues (72.2%) compared with in non‑metastatic lung cancer tissues (33.0%). STIM1 knockdown inhibited A549 cell migration and invasion in vitro and tumor metastasis in vivo. The protein expression levels of Snail1, Vimentin, matrix metalloproteinase (MMP) 2 and MMP9 were markedly decreased in A549‑shSTIM1 compared with in A549 cells transfected with control shRNA (shcon). In addition, the protein expression levels of E‑cadherin were markedly increased in A549‑shSTIM1 cells compared with in A549‑shcon cells. These results suggested that STIM1 knockdown may inhibit the migration and invasion of A549 cells in vitro, and metastasis in vivo.
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