AIM:To explore the correlation between Twist-related protein(Twist)1,fibroblast growth factor receptor(FGFR)2 and gastric adenocarcinoma differentiation and progression.METHODS:We evaluated Twist1 and FGFR2 in 52 gast...AIM:To explore the correlation between Twist-related protein(Twist)1,fibroblast growth factor receptor(FGFR)2 and gastric adenocarcinoma differentiation and progression.METHODS:We evaluated Twist1 and FGFR2 in 52 gastric adenocarcinoma samples by immunohistochemistry and quantitative real time polymerase chain reaction,and analyzed the correlation between Twist1,FGFR2 and cancer differentiation.We also detected Twist1 and FGFR2 expression in gastric adenocarcinoma cell lines,and evaluated Twist1 influence on FGFR2 expression.In addition,we studied the role of FGFR2 in Twist1-promoted cancer progression,including proliferation,invasion and epithelial-mesenchymal transition(EMT).RESULTS:Twist1 and FGFR2 were detected in almost all the gastric adenocarcinoma samples.Twist1(P=0.0213)and FGFR2(P=0.0310)m RNA levels had a significant association with gastric adenocarcinoma differentiation.Moreover,Twist1 and FGFR2 expression in poorly differentiated cells(SNU-1 and SNU-16)was notably higher than in well-differentiated cells(MKN-7 and MKN-28).In poorly differentiated gastric adenocarcinomas,FGFR2 m RNA level was significantly positively correlated with Twist1 m RNA level(P=0.004).Twist1 was proved to promote FGFR2 by regulating Twist1 expression by knockdown and overexpression.Additionally,Twist1 could induce proliferation,invasion and EMT in gastric cancer;of these,FGFR2 was required for invasion and EMT,rather than proliferation.CONCLUSION:Twist1 and FGFR2 are highly associated with differentiation of gastric adenocarcinoma;Twist1 can facilitate invasion and EMT in gastric adenocarcinoma via promotion of FGFR2 expression.展开更多
Twist是编码碱性螺旋-环-螺旋(helix-loop-helix,HLH)DNA结构域的转录因子。Twist家族包括Twist1和Twist2两种基因,通常指Twist即为Twist1。尽管Twist1在癌发生及上皮-间质转化(epithelial to mesenchymal transition,EMT)中的作用...Twist是编码碱性螺旋-环-螺旋(helix-loop-helix,HLH)DNA结构域的转录因子。Twist家族包括Twist1和Twist2两种基因,通常指Twist即为Twist1。尽管Twist1在癌发生及上皮-间质转化(epithelial to mesenchymal transition,EMT)中的作用研究较多。展开更多
基金Supported by Medicine and Sanitation Development Project of Shandong Province,No.2014WS0323
文摘AIM:To explore the correlation between Twist-related protein(Twist)1,fibroblast growth factor receptor(FGFR)2 and gastric adenocarcinoma differentiation and progression.METHODS:We evaluated Twist1 and FGFR2 in 52 gastric adenocarcinoma samples by immunohistochemistry and quantitative real time polymerase chain reaction,and analyzed the correlation between Twist1,FGFR2 and cancer differentiation.We also detected Twist1 and FGFR2 expression in gastric adenocarcinoma cell lines,and evaluated Twist1 influence on FGFR2 expression.In addition,we studied the role of FGFR2 in Twist1-promoted cancer progression,including proliferation,invasion and epithelial-mesenchymal transition(EMT).RESULTS:Twist1 and FGFR2 were detected in almost all the gastric adenocarcinoma samples.Twist1(P=0.0213)and FGFR2(P=0.0310)m RNA levels had a significant association with gastric adenocarcinoma differentiation.Moreover,Twist1 and FGFR2 expression in poorly differentiated cells(SNU-1 and SNU-16)was notably higher than in well-differentiated cells(MKN-7 and MKN-28).In poorly differentiated gastric adenocarcinomas,FGFR2 m RNA level was significantly positively correlated with Twist1 m RNA level(P=0.004).Twist1 was proved to promote FGFR2 by regulating Twist1 expression by knockdown and overexpression.Additionally,Twist1 could induce proliferation,invasion and EMT in gastric cancer;of these,FGFR2 was required for invasion and EMT,rather than proliferation.CONCLUSION:Twist1 and FGFR2 are highly associated with differentiation of gastric adenocarcinoma;Twist1 can facilitate invasion and EMT in gastric adenocarcinoma via promotion of FGFR2 expression.
文摘目的探究FAK/Twist1信号通路在颅缝闭合过程中的作用。方法将10 d大鼠分为对照组(50只)和颅缝旋转组(50只),以大鼠人字缝中点为中心,直径约0.5 cm做一骨窗,将骨瓣在不损伤硬脑膜的情况下游离,对照组骨瓣原位复位,旋转组骨瓣旋转180°后复位,两组大鼠3周后进行实验。旷场试验测试行为学,测量两组体质量、头围、骨瓣面积、骨瓣厚度等生理学指标,显微镜及HE染色观察颅缝闭合情况,Western blot、Real time PCR、免疫组化染色测定骨瓣及骨瓣下硬脑膜FAK/Twist1通过表达情况。结果旋转组骨瓣厚度大于对照组,差异有统计学意义(P<0.01),头围、体质量、骨瓣面积、术区面积无明显差异;显微镜下及HE染色中结果显示:旋转组颅缝完全闭合,对照组颅缝保持正常形态;行为学试验结果显示,颅缝闭合后大鼠行动能力下降且出现抑郁倾向;Western blot、Real time PCR、免疫组化染色显示:旋转组FAK在颅骨和硬脑膜中表达量均高于对照组且差异有统计学意义(P<0.05),旋转组Twist1在硬脑膜中表达量低于对照组且差异有统计学意义(P<0.05),在颅骨中两组Twist1表达量相近,差异无统计学意义。结论颅缝旋转后可以导致颅缝早闭,并会出现行动能力下降等行为学异常,FAK/Twist1可能在颅缝闭合过程中发挥着重要作用。
文摘Twist是编码碱性螺旋-环-螺旋(helix-loop-helix,HLH)DNA结构域的转录因子。Twist家族包括Twist1和Twist2两种基因,通常指Twist即为Twist1。尽管Twist1在癌发生及上皮-间质转化(epithelial to mesenchymal transition,EMT)中的作用研究较多。