Snail在TGF-β1诱导胃癌细胞MGC-803上皮间质转化中的作用

目的 探讨Snail在TGF-β1诱导人胃癌细胞MGC-803上皮细胞向间质细胞转化过程中的表达及其作用。方法 TGF-β1处理人胃癌细胞MGC-803不同时间(0 h,3 h,6 h,24 h,48 h,72 h),倒置显微镜观察细胞形态的变化,Western blot方法检测Snail蛋白及E-cadherin,Vimentin蛋白的表达情况,Transwell实验检测细胞侵袭能力的变化。结果 (1)随着TGF-β1作用时间的延长,MGC-803细胞形态发生变化,伪足不同程度的增多;(2)在外源性TGF-β1作用下,胃癌细胞MGC-803均不同程度地表达Snail和E-cadherin,Snail从0 h到6 h表达量增强,到6 h时达到最高。E-cadherin蛋白从0 h到6 h表达逐渐增高,6 h时最高,后续变化不明显。Vimentin蛋白6 h表达量最低,此后逐渐升高,72 h时表达量最高;(3)Transwell小室实验显示6 h时,细胞开始穿过ECM膜,随着时间的延长,穿过的细胞逐渐增多,72 h最多。结论 在TGF-β1诱导人胃癌细胞MGC-803细胞EMT的过程中,Snail蛋白起到重要作用,启动Vimentin转录表达。     

沉默PD-L1基因表达抑制胃癌细胞黏附、迁移、侵袭及上皮间质转化

目的:初步探讨程序性死亡受体配体（programmed death-ligand 1,PD-L1）对胃癌细胞SGC7901侵袭、迁移的影响及PD-L1表达对上皮间质转化（epithelial-mesenchymal transition,EMT）的影响。方法:采用siRNA干扰技术,下调SGC7901细胞株中PD-L1的表达,采用RT-PCR法及Western blot法验证PD-L1的沉默,并将后续实验分为空白对照组、空载体组（siRNA-NC组）及PD-L1沉默组（siRNA-PD-L1组）。采用RT-PCR法及Western blot法分别对各组细胞EMT相关指标（E-cadherin、Vimentin、Snail）的mRNA和蛋白表达情况进行检测。利用MTT实验比较各组细胞的黏附能力,Transwell小室实验比较各组细胞的迁移能力及侵袭能力。结果:下调PD-L1表达后,siRNA-PD-L1组Vimentin及Snail 两项指标的mRNA和蛋白表达量,细胞的黏附能力、迁移能力及侵袭能力均低于空白对照组和siRNA-NC组,E-cadherin mRNA和蛋白表达量高于其他两组,差异均具有统计学意义（P＜0.001）,而空白对照组和siRNA-NC组之间上述指标的差异无统计学意义。结论:PD-L1的表达影响胃癌细胞黏附、迁移、侵袭等生物学行为,促进胃癌细胞的上皮间质转化,与胃癌的预后可能存在相关性。     

miR-325-3p靶向CLDN1基因调控胃癌上皮间质转化和侵袭转移

目的 探讨miR-325-3p靶向CLDN1基因对胃癌上皮间质转化和侵袭转移的影响.方法 选取人胃黏膜上皮细胞株GES-1以及人胃癌细胞株HGC27、SGC-7901、MKN-45和MGC-803,并检测细胞中miR-325-3p和CLDN1的表达.双荧光素酶报告实验验证miR-325-3p和CLDN1的靶向关系,干预...     

DJ-1 过表达通过PTEN/Akt 通路促进人胃癌MGC803 细胞的增殖、迁移、侵袭与上皮间质转化

目的：探讨DJ-1基因过表达对人胃癌MGC803细胞增殖、迁移、侵袭与上皮间质转化（EMT）的影响及其机制。方法：利用基因转染技术构建DJ-1基因过表达MGC803 细胞,实验分为MGC803、空载体和DJ-1过表达组。采用MTT、平板克隆形成、细胞划痕和Transwell 实验分别检测DJ-1过表达对MGC803 细胞增殖、克隆形成、迁移与侵袭的影响;qPCR和WB法检测DJ-1过表达对各组细胞DJ-1、PTEN、Akt、p-Akt、Snail、vimentin、E-cadherin、MMP-9与TIMP-3表达的影响,相差显微镜下观察MGC803细胞形态学的变化。裸鼠荷瘤实验检测DJ-1过表达对MGC803细胞移植瘤体内生长的影响。结果：成功构建DJ-1基因稳定过表达的MGC803 细胞。与MGC803 组和空载体组比较,DJ-1过表达组细胞的增殖能力与克隆形成数均显著增加（均P<0.05）,细胞迁移距离明显增加、划痕距离明显缩短（均P<0.05）,迁移与侵袭细胞数显著增多（均P<0.05）,DJ-1 mRNA与蛋白表达明显上调、 PTEN mRNA与蛋白表达下调（均P<0.05）,Akt 总蛋白各组比较无明显差异（均P>0.05）,p-Akt 蛋白表达明显上调（P<0.05）, Snail、vimentin 与MMP-9表达上调、E-cadherin 与TIMP-3表达下调（均P<0.05）。相差显微镜下见长梭形细胞数目增多,圆形与椭圆形细胞减少,异型性更为明显。荷瘤裸鼠体内实验结果表明,与MGC803 组相比较,DJ-1过表达组MGC803 细胞移植瘤生长速度明显加快、移植瘤质量显著增加（均P<0.05）。结论：DJ-1过表达可通过PTEN/Akt 通路在体内外抑制MGC803 细胞的增殖、迁移、侵袭与EMT。     

膜联蛋白A7低表达对胃癌MGC-803细胞增殖和凋亡的影响

目的:探讨RNA干扰技术靶向沉默膜联蛋白A7(anexin A7,ANXA7)的表达对人胃癌MGC-803细胞增殖和凋亡的影响。方法:实验分为3组,以靶向ANXA7的siRNA转染MGC-803细胞为siRNA干扰组,另设阴性siRNA对照和空白对照组。Western blotting检测转染后MGC-803细胞中ANXA7蛋白的表达,应用MTT、集落形成和流式细胞术检测ANXA7下调对MGC-803细胞增殖、凋亡的影响。结果:靶向ANXA7的siRNA转染后MGC-803细胞中ANXA7的表达较阴性对照和空白对照组细胞明显降低[(21.79±1.72)%vs(99.87±5.13)%、(93.45±4.89)%,均P<0.05]。下调ANXA7明显降低MGC-803细胞的增殖能力[(0.97±0.06)vs(1.21±0.07)、(1.25±0.08),均P<0.05]和集落形成能力[(183±21)vs(363±35)、(348±27)个,均P<0.05],细胞凋亡率无显著变化(P>0.05)。结论:ANXA7低表达可抑制胃癌细胞MGC-803增殖,而对细胞凋亡无明显影响。     

lncRNA MALAT1/miR-141-3p/ZEB1 分子轴调控胃癌SGC7901 细胞的侵袭、迁移及上皮间质转化

[摘要] 目的：探究lncRNA MALAT1/miR-141-3p/ZEB1 分子轴对胃癌（GC）SGC7901 细胞侵袭、迁移及上皮间质转化（EMT）的调控作用。方法：收集2014 年4 月至2017 年5 月武汉商职医院普外科手术切除的GC组织（非坏死部分）和配对癌旁组织（距肿瘤组织>5 cm）标本38 例,同时选取正常胃上皮细胞GES1 及GC细胞系SGC7901、HGC27、BGC823、MKN45 和MKN28。qPCR实验检测MALAT1、miR-141-3p 在GC组织和细胞系中的表达水平,CCK-8 和Transwell 实验检测敲降MALAT1 对SGC7901 细胞增殖、迁移和侵袭的影响,WB 实验检测ZEB1、E-cadherin、N-cadherin 和Vimentin 的表达情况。双荧光酶素报告基因验证MALAT1、miR-141-3p 和ZEB1 的靶向关系,CCK-8 和Transwell 实验检测MALAT1/miR-141-3p/ZEB1 分子轴对SGC7901 细胞生物学行为的影响。结果：MALAT1 在GC组织和细胞系中高表达（P<0.05 或P<0.01）。敲降MALAT1 显著抑制了SGC7901 细胞增殖、迁移、侵袭及EMT（P<0.05 或P<0.01）;MALAT1 与miR-141-3p、miR-141-3p 与ZEB1 均具有直接靶向关系;进一步研究表明,同时过表达miR-141-3p 和MALAT1 或ZEB1 能够逆转miR-141-3p 对SGC7901 细胞生物学行为的抑制作用。结论：MALAT1通过靶向下调miR-141-3p 对ZEB1 的抑制作用,进而促进SGC7901 细胞侵袭、迁移及EMT。     

柠檬酸合成酶对卵巢癌SKOV3细胞上皮间质转化的影响

目的:探讨柠檬酸合成酶（citrate synthase,CS）对上皮性卵巢癌（epithelial ovarian cancer,EOC）细胞SKOV3上皮间质转化（epithelial-mesenchymal transformation,EMT）及生物学行为的影响。方法:利用Lipofectamine 2000体外瞬时转染化学法合成的CS siRNA,通过实时荧光定量PCR（quantitative real-time PCR,qRT-PCR)和Western blot检测转染效率;Transwell实验检测转染前后SKOV3细胞侵袭和迁移能力的变化;Western blot检测转染前后上皮标记分子E-cadherin、间质标记分子Vimentin蛋白水平和Wnt通路关键分子β-catenin蛋白水平,实时荧光定量PCR检测转染前后EMT相关转录因子Slug、Snail和Twist的mRNA水平。结果:siRNA干扰序列显著降低SKOV3细胞中CS表达;CS低表达显著抑制SKOV3细胞的侵袭和迁移能力,促进上皮标记分子E-cadherin表达,抑制间质标记分子Vimentin表达,降低Wnt通路关键分子β-catenin表达;EMT相关转录因子Snail和Twist表达显著降低(P＜0.001,P＜0.01),Slug表达下降不显著(P＞0.05)。结论:CS低表达显著抑制卵巢癌SKOV3细胞EMT,其机制可能是通过降低Snail和Twist转录因子实现的,为卵巢癌的转移治疗提供初步的实验及理论基础。     

LSD1抑制剂抑制非小细胞肺癌A549细胞侵袭、迁移及上皮间质转化

目的:探究赖氨酸特异性组蛋白去甲基化酶1（lysine-specific demethylase 1,LSD1）抑制剂对非小细胞肺癌（non-small cell lung cancer,NSCLC）A549细胞侵袭、迁移及上皮间质转化的影响。方法:将体外培养的人非小细胞肺癌A549细胞分为对照组和LSD1抑制剂组,在细胞进入对数生长期时,向实验组细胞中分别加入不同浓度的LSD1抑制剂,培养24 h。CCK-8法用于细胞增殖检测,划痕实验用于细胞迁移检测,Transwell小室法用于细胞侵袭检测,裂解细胞提取总蛋白后通过蛋白质免疫印迹技术（Western blot,WB）检测A549细胞中上皮细胞标志物E型钙黏蛋白（E-cadherin）、间充质细胞标志物N型钙黏蛋白（N-cadherin）和波形蛋白（Vimentin）的表达水平。结果:与对照组相比,LSD1抑制剂组细胞增殖率、穿膜细胞数和划痕愈合率显著降低（P＜0.05）;LSD1抑制剂组相较于对照组,E-cadherin表达量升高,N-cadherin和Vimentin的表达量均降低（P＜0.05）。结论:LSD1抑制剂可抑制非小细胞肺癌A549细胞的侵袭、迁移及上皮间质转化。     

尼古丁诱导肺癌细胞上皮间质转化促进其侵袭转移

背景与目的我们的前期研究发现尼古丁能诱导肺癌细胞上皮间质转化。本研究的目的是探讨尼古丁诱导的上皮间质转化（epithelial-mesenchymal transition, EMT）与肺癌侵袭之间的关系。方法应用不同浓度尼古丁处理肺腺癌A549细胞,应用Real-time PCR和Western blot方法检测EMT相关分子标志物E-钙粘蛋白（E-cadherin）和波形蛋白（Vimentin）mRNA和蛋白表达水平,应用免疫荧光技术检测β-链蛋白（β-catenin）蛋白表达位置的变化,应用划痕实验和Transwell小室侵袭实验检测尼古丁对肺癌细胞迁移侵袭能力的影响。结果尼古丁明显下调肺癌细胞株A549 E-cadherin mRNA和蛋白水平表达（P<0.01, P<0.01）,并具有浓度和时间依赖性;尼古丁明显上调肺癌细胞株A549 Vimentin mRNA和蛋白水平表达（P<0.01, P<0.01）;尼古丁诱导肺癌细胞株A549细胞β-catenin蛋白发生核转移;划痕实验和侵袭实验观察到尼古丁处理的肺癌细胞株A549细胞的迁移和侵袭能力明显增强（P<0.01, P<0.01）。结论尼古丁能够诱导肺癌细胞发生EMT,并且促进肺癌细胞株A549细胞的体外侵袭潜能。     

miR-203 Inhibits the Invasion and EMT of Gastric Cancer Cells by Directly Targeting Annexin A4

Many studies have shown that downregulated miR-203 level is in a variety of cancers including gastric cancer (GC). However, the precise molecule mechanisms of miR-203 in GC have not been well clarified. In the current study, we investigated the biological functions and molecular mechanisms of miR-203 in GC cell lines. We found that miR-203 is downregulated in GC tissues and cell lines. Moreover, the low level of miR-203 was associated with increased expression of annexin A4 in GC tissues and cell lines. The invasion and EMT of GC cells were suppressed by overexpression of miR-203. However, downregulation of miR-203 promoted invasion and EMT of GC cells. Bioinformatics analysis predicted that annexin A4 was a potential target gene of miR-203. Next, luciferase reporter assay confirmed that miR-203 could directly target annexin A4. Consistent with the effect of miR-203, downregulation of annexin A4 by siRNA inhibited the invasion and EMT of GC cells. Introduction of annexin A4 in GC cells partially blocked the effects of miR-203 mimic. Introduction of miR-203 directly targeted annexin A4 to inhibit the invasion and EMT of GC cells. Overall, reactivation of the miR-203/annexin A4 axis may represent a new strategy for overcoming metastasis of GC.     

miR-205对胃癌细胞侵袭迁移的调控作用及其潜在机制

目的 探讨miR-205对胃癌HGC27细胞侵袭、迁移的作用及其机制。方法 实时荧光定量PCR法测定4种不同胃癌细胞（AGS、MKN74、HGC27、SGC7901）中miR-205的表达情况。体外培养的HGC27细胞通过转染miR-205 mimic上调细胞中miR-205的表达,划痕实验和Transwell实验观察其侵袭和迁移能力;Western blot检测上皮间质转化（epithelial-mesenchymal transition, EMT）进程及相关信号通路的活性。结果 miR-205在4种胃癌细胞中均呈低表达（均P<0.05）。过表达miR-205后,HGC27细胞的迁移率由（54.7±4.1）%降低至（34.1±4.5）% （P=0.005）;细胞的侵袭率由（52.8±6.3）%降低至（32.2±4.9）%（P=0.001）。此外,过表达miR-205之后,胃癌细胞中上皮细胞标志物E-cadherin、β-catenin蛋白表达显著上升（P=0.002, P=0.003）,而间质细胞标志物N-cadherin、vimentin的蛋白表达显著下降（P=0.005, P=0.004）,Notch和snail的蛋白表达水平也显著降低（P=0.002, P=0.003）。结论 miR-205在胃癌细胞中低表达,且与胃癌细胞的侵袭和迁移密切相关;其分子机制可能与抑制EMT及Notch/snail信号通路有关。     

Emodin Inhibits Colon Cancer Cell Invasion and Migration by Suppressing Epithelial–Mesenchymal Transition via the Wnt/b-Catenin Pathway

Colon cancer (CC) is the third most common cancer worldwide. Emodin is an anthraquinone-active substance that has the ability to affect tumor progression. Our study aims to explore the effects and the relevant mechanism of emodin on the invasion and migration of CC in vitro and in vivo. In our study, we found that emodin inhibited the invasion and migration abilities of RKO cells and decreased the expression of matrix metalloproteinase-7 (MMP-7), MMP-9, and vascular endothelial growth factor (VEGF) in a dose-dependent manner. Further research suggested that emodin inhibited EMT by increasing the mRNA level of E-cadherin and decreasing the expression of N-cadherin, Snail, and b-catenin. Emodin also significantly inhibited the activation of the Wnt/b-catenin signaling pathway by downregulating the expression of related downstream target genes, including TCF4, cyclin D1, and c-Myc. A Wnt/b-catenin signaling pathway agonist abolished the effect of emodin on EMT and cell mobility, suggesting that emodin exerted its regulating role through the Wnt/b-catenin pathway. The CC xenograft model was established to study the antitumor efficiency of emodin in vivo. The in vivo study further demonstrated that emodin (40 mg/kg) suppressed tumor growth by inhibiting EMT via the Wnt/b-catenin signaling pathway in vivo. Taken together, we suggest that emodin inhibits the invasion and migration of CC cells in vitro and in vivo by blocking EMT, which is related with the inhibition of the Wnt/b-catenin signaling pathway     

STEAP1 Inhibits Breast Cancer Metastasis and Is Associated With Epithelial–Mesenchymal Transition Procession

Purpose

Six-transmembrane epithelial antigen of prostate 1 (STEAP1) is a cell surface antigen overexpressed in multiple cancers and is associated with malignancy and disease prognosis. The aims of this study were to evaluate STEAP1 expression in breast cancer and to determine the mechanisms involved.

Emodin Inhibits Colon Cancer Cell Invasion and Migration by Suppressing Epithelial–Mesenchymal Transition via the Wnt/β-Catenin Pathway

Colon cancer (CC) is the third most common cancer worldwide. Emodin is an anthraquinone-active substance that has the ability to affect tumor progression. Our study aims to explore the effects and the relevant mechanism of emodin on the invasion and migration of CC in vitro and in vivo. In our study, we found that emodin inhibited the invasion and migration abilities of RKO cells and decreased the expression of matrix metalloproteinase-7 (MMP-7), MMP-9, and vascular endothelial growth factor (VEGF) in a dose-dependent manner. Further research suggested that emodin inhibited EMT by increasing the mRNA level of E-cadherin and decreasing the expression of N-cadherin, Snail, and b-catenin. Emodin also significantly inhibited the activation of the Wnt/b-catenin signaling pathway by downregulating the expression of related downstream target genes, including TCF4, cyclin D1, and c-Myc. A Wnt/b-catenin signaling pathway agonist abolished the effect of emodin on EMT and cell mobility, suggesting that emodin exerted its regulating role through the Wnt/b-catenin pathway. The CC xenograft model was established to study the antitumor efficiency of emodin in vivo. The in vivo study further demonstrated that emodin (40 mg/kg) suppressed tumor growth by inhibiting EMT via the Wnt/b-catenin signaling pathway in vivo. Taken together, we suggest that emodin inhibits the invasion and migration of CC cells in vitro and in vivo by blocking EMT, which is related with the inhibition of the Wnt/b-catenin signaling pathway.     

卵巢癌细胞上皮间质转化及侵袭转移过程中microRNA-9的调控作用

目的 探讨microRNA-9（miR-9）参与调控卵巢癌细胞EMT过程,以及影响卵巢癌细胞侵袭及转移的分子机制。方法 使用TargetScan及PicTar数据库,预测可能靶向E-cadherin 3’UTR区的miRNA,双荧光素酶报告体系进行验证;上调候选miR后,用qRT-PCR和Western blot检测E-cadherin的表达变化;细胞免疫荧光观察E-cadherin、β-Catenin和Vimentin的表达;划痕实验、Transwell实验,观察卵巢癌细胞运动和侵袭能力的改变。结果 TargetScan、PicTar预测发现miR-9是唯一可与CDH1结合的miRNA。双荧光素酶报告系统验证预测结果正确。在SKOV-3中上调miR-9后,E-cadherin的表达受到显著抑制;细胞形态向间质细胞样转变,发生EMT分子水平的特征性改变;体外实验表明,卵巢癌细胞的运动和侵袭能力得到明显促进。结论 miR-9可以通过靶向调控E-cadherin表达,促进卵巢癌细胞的EMT进程,对卵巢癌细胞的运动和侵袭能力产生重要影响。     

肺癌细胞中miR-96对其侵袭和迁移的影响

Abstract：Objective To investigate the expression of miR-96 in lung cancer tissues and demonstrate theregulative effects of miR-96 ASO on the invasion and migration of lung cancer cells in vitro. Methods Theexpression of miR-96 in 116 cases of lung cancer tissues and their adjacent tissues were detected by fl uorogenicquantitative PCR method. The effects of miR-96 ASO on the invasion and migration ability of lung cancercells were measured by transwell assay and wound healing assay. Invasion-related protein expression wasanalyzed by Western blot. Results In 116 cases of lung cancer, the expression of miR-96 in 63.80%(74/116)of lung cancer tissues was significantly higher than that in adjacent tissues(P<0.05). miR-96 expression inlung cancer cells in miR-96 ASO transfection group was significantly lower than that in MOCK and NCgroup(P<0.05). Transwell and wound healing assay results showed that the invasion and migration ability wasdecreased greatly after transfected with miR-96 ASO, furthermore, down -regulation of miR-96 resulted inobvious inactivation of MMP2 and MMP9(P<0.05). Conclusion miR-96 was up-regulated in human lungcancerous tissue. Reducing the expression of miR-96 can effectively inhibit the invasion and migration of lungcancer cells. miR-96 may become a new target for regulating the invasion and migration ability in lung cancer.     

MicroRNA 495 Inhibits Proliferation and Metastasis and Promotes Apoptosis by Targeting Twist1 in Gastric Cancer Cells

Recently, microRNAs (miRNAs) have been reported to participate in multiple biological processes. However, the effects of miR-495 on gastric cancer (GC) remain unclear. The purpose of this study was to explore the functions of miR-495 in GC cell proliferation, metastasis, and apoptosis. SGC-7901 and BGC-823 cell lines were transfected with miR-495 mimic, miR-495 inhibitor, and negative controls (mimic control and inhibitor control). The expressions of miR-495, cell viability, migration, apoptosis, and apoptosis-related factors were examined by qRT-PCR, trypan blue staining, Transwell, flow cytometry, and Western blot, respectively. Simultaneously, key factor expression levels of EMT were detected by qRT-PCR and Western blot. The direct target of miR-495 was confirmed by dual-luciferase assay. Additionally, sh-Twist1, pc-Twist1, and corresponding controls were transfected into SGC-7901 and BGC-823 cells, and the protein levels of EMTassociated factors were detected by Western blot. miR-495 was downregulated in GC cells. miR-495 expression level was effectively overexpressed or suppressed in SGC-7901 and BGC-823 cells. Overexpression of miR-495 significantly decreased cell viability and migration, increased apoptosis, and inhibited the EMT process. Suppression of miR-495 showed contrary results. Twist1 was clarified as a target gene of miR-495, and Twist1 silencing obviously reduced the promoting effect of miR-495 suppression on these biological processes. Twist1 silencing significantly blocked the EMT process in both SGC-7901 and BGC-823 cells. miR-495 inhibited proliferation and metastasis and promoted apoptosis by targeting Twist1 in GC cells. These data indicated that miR-495 might be a novel antitumor factor of GC and provide a new method for the treatment of GC.     

OLFM4 Inhibits Epithelial–Mesenchymal Transition and Metastatic Potential of Cervical Cancer Cells

OLFM4 has been shown to play an important role in tumor initiation and progression. This study aims to investigate the role of OLFM4 in metastatic cervical cancer and its underlying mechanism. Here we discover that OLFM4 expression is significantly reduced in metastatic cervical cancer. Accordingly, overexpression of OLFM4 inhibits epithelial–mesenchymal transition (EMT), migration, and invasion in human cervical cancer cells. To further explore its molecular mechanisms, we reveal that OLFM4 augmentation interferes with mTOR signaling pathway, and the suppressive effects of OLFM4 on cell migration and invasion are largely weakened by phosphatidic acid (PA)-induced mTOR signal activation, which implicates the potential role of the mTOR pathway in OLFM4-related cervical metastasis. In conclusion, our results confirm OLFM4 as a tumor suppressor that inhibits cervical cancer metastasis by regulating mTOR signal pathway.     

Propofol Inhibits Lung Cancer A549 Cell Growth and Epithelial–Mesenchymal Transition Process by Upregulation of MicroRNA-1284

Propofol has been widely used in lung cancer resections. Some studies have demonstrated that the effects of propofol might be mediated by microRNAs (miRNAs). This study aimed to investigate the effects and mechanisms of propofol on lung cancer cells by regulation of miR-1284. A549 cells were treated with different concentrations of propofol, while transfected with miR-1284 inhibitor, si-FOXM1, and their negative controls. Cell viability, migration, and invasion, and the expression of miR-1284, FOXM1, and epithelial–mesenchymal transition (EMT) factors were detected by CCK-8, Transwell, qRT-PCR, and Western blot assays, respectively. In addition, the regulatory and binding relationships among propofol, miR-1284, and FOXM1 were assessed, respectively. Results showed that propofol suppressed A549 cell viability, migration, and invasion, upregulated E-cadherin, and downregulated N-cadherin, vimentin, and Snail expressions. Moreover, propofol significantly promoted the expression of miR-1284. miR-1284 suppression abolished propofol-induced decreases of cell viability, migration, and invasion, and increased FOXM1 expression and the luciferase activity of FOXM1-wt. Further, miR-1284 negatively regulated FOXM1 expression. FOXM1 knockdown reduced cell viability, migration, and invasion by propofol treatment plus miR-1284 suppression. In conclusion, our study indicated that propofol could inhibit cell viability, migration, invasion, and the EMT process in lung cancer cells by regulation of miR-1284.