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Baocun Sun Yanrong Liu Qiang Gu Yanhui Zhang Xueming Zhao Na Che Yanjun Zheng Fang Liu Yong Wang Jie Meng 《Journal of cellular and molecular medicine》2016,20(9):1673-1685
To characterize the contributions of Dickkopf‐1 (DKK1) towards the induction of vasculogenic mimicry (VM) in non‐small cell lung cancer (NSCLC), we evaluated cohorts of primary tumours, performed in vitro functional studies and generated xenograft mouse models. Vasculogenic mimicry was observed in 28 of 205 NSCLC tumours, while DKK1 was detected in 133 cases. Notably, DKK1 was positively associated with VM. Statistical analysis showed that VM and DKK1 were both related to aggressive clinical course and thus were indicators of a poor prognosis. Moreover, expression of epithelial‐mesenchymal transition (EMT)‐related proteins (vimentin, Slug, and Twist), cancer stem‐like cell (CSC)‐related proteins (nestin and CD44), VM‐related proteins (MMP2, MMP9, and vascular endothelial‐cadherin), and β‐catenin‐nu were all elevated in VM‐positive and DKK1‐positive tumours, whereas the epithelial marker (E‐cadherin) was reduced in the VM‐positive and DKK1‐positive groups. Non‐small cell lung cancer cell lines with overexpressed or silenced DKK1 highlighted its role in the restoration of mesenchymal phenotypes and development of CSC characteristics. Moreover, DKK1 significantly promotes NSCLC tumour cells to migrate, invade and proliferate. In vivo animal studies demonstrated that DKK1 enhances the growth of transplanted human tumours cells, as well as increased VM formation, mesenthymal phenotypes and CSC properties. Our results suggest that DKK1 can promote VM formation via induction of the expression of EMT and CSC‐related proteins. As such, we feel that DKK1 may represent a novel target of NSCLC therapy. 相似文献
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Guodong Xiao Yuan Li Meng Wang Xiang Li Sida Qin Xin Sun Rui Liang Boxiang Zhang Ning Du Chongwen Xu Hong Ren Dapeng Liu 《Cell proliferation》2018,51(5)
Objectives
FBXW7 acts as a tumour suppressor by targeting at various oncoproteins for ubiquitin‐mediated degradation. However, the clinical significance and the involving regulatory mechanisms of FBXW7 manipulation of NSCLC regeneration and therapy response are not clear.Materials and Methods
Immunohistochemical staining and qRT‐PCR were applied to detect FBXW7 and Snai1 expression in 100 samples of NSCLC and matched tumour‐adjacent tissues. FBXW7 manipulation of cancer biological functions were studied by using MTT assay, immunoblotting, flow cytometry, transwells, wound healing assay, and sphere‐formation assays. Immunofluorescence and co‐immunoprecipitation were used to analyse the possible interaction between Snai1 and FBXW7.Results
We detected the decreased FBXW7 expression in majority of the NSCLC tissues, and lower FBXW7 level was correlated with advanced TNM stage. Furthermore, those patients with decreased FBXW7 expression tend to have both poorer 5‐year survival outcomes, and shorter disease‐free survival, comparing to those with higher FBXW7 levels. Functionally, we found that FBXW7 enforcement suppressed NSCLC progression by inducing cell growth arrest, increasing chemo‐sensitivity and inhibiting Epithelial‐mesenchymal Transition (EMT) progress. Results further showed that FBXW7 could interact with Snai1 directly to degrade its expression through ubiquitylating alternation in NSCLC, which could be partially abrogated by restoring Snai1 expression.Conclusions
FBXW7 conduction of tumour suppression was partly through degrading Snai1 directly for ubiquitylating regulation in NSCLC4.
Xu Han Tong Sun Jia Hong Rongrong Wei Yingzi Dong Di Huang Jie Chen Xiyun Ren Haibo Zhou Wenjing Tian Yunhe Jia 《Journal of cellular biochemistry》2019,120(10):17723-17730
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Hippo信号通路是调控器官大小和肿瘤发生发展的关键通路,近年来受到广泛的关注。TAZ/YAP作为哺乳动物中Hippo信号通路两个核心下游效应分子,通过Hippo信号通路依赖性和非依赖性的机制受到细胞内外信号的严密调控。除了参与正常乳腺组织发育,Hippo信号通路还在人乳腺癌细胞的增殖、分化、凋亡、迁移、侵袭、上皮-间质转化和干性维持等多个过程中起着关键性作用。本文总结了Hippo信号通路的调控机制和调节信号,阐述了Hippo信号通路异常在乳腺癌发生发展中的作用,并讨论了其在乳腺癌中作为治疗靶点的临床策略。 相似文献
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Yue‐Ming He Yu‐Sha Xiao Lei Wei Jia‐Qiang Zhang Cheng‐Hong Peng 《Journal of cellular biochemistry》2018,119(7):5308-5323
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Chunhua Xu Qi Yuan Huidi Hu Wei Wang Qian Zhang Li Li Jiwang Wang Rusong Yang 《Journal of cellular and molecular medicine》2020,24(17):9705-9711
Cripto‐1 (CR‐1) is related to the biological behaviour and prognosis of carcinomas. The purpose of this study was to investigate the significance of CR‐1 expression in surgically resected stage I non‐small cell lung cancer (NSCLC). One hundred and forty‐eight patients with completely resected stage I NSCLC and available clinical follow‐up data were assessed. The protein expression of CR‐1 in the tumours was detected by immunohistochemistry. CR‐1 was highly expressed in 64 of 148 tumours. Among patients with high CR‐1 expression, progression‐free survival and overall survival rate were significantly lower than those of patients with low CR‐1 levels (P = .013 and P = .019, respectively). The incidence of distant metastasis in patients with high CR‐1 expression was significantly higher than that of in patients with low CR‐1 expression (57.13% vs 21.43%, P = .001). The results of the multivariate analysis confirmed that a high CR‐1 was a significant factor for poor prognosis. In conclusion, CR‐1 could be a useful prognostic factor in patients with stage I NSCLC, likely as an indicator of the metastatic propensity of the tumour. 相似文献
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Yongping Zhou Ting Shan Wenzhou Ding Zhiyuan Hua Yijun Shen Zhihua Lu Bo Chen Tu Dai 《Journal of cellular physiology》2018,233(8):5805-5814
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肠道是人体最重要的消化器官之一,急慢性肠炎、肠道肿瘤等肠道疾病严重威胁着人类的健康,因此对肠道生理及病理机制的研究具有重要的科学意义及临床价值。Hippo信号通路在细胞增殖与分化、组织损伤再生、肿瘤发生和发展过程中起重要作用,参与肠道中众多生理及病理进程的调控。本文结合近年来肠道相关Hippo信号通路的研究进展,对该领域的前沿信息进行概括总结,重点阐述了Hippo信号在肠稳态、再生与癌变过程中的作用,并在此基础上展望了肠道中Hippo信号通路研究的前景及潜在的临床价值。 相似文献
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Tse‐Hung Huang Alexander T. H. Wu Tai‐Shan Cheng Kuan‐Ting Lin Chia‐Jou Lai Hao‐Wen Hsieh Peter Mu‐Hsin Chang Cheng‐Wen Wu Chi‐Ying F. Huang Kuan‐Yu Chen 《Journal of cellular and molecular medicine》2019,23(12):8184-8195
Cancer stem cells (CSCs) play an important role in cancer treatment resistance and disease progression. Identifying an effective anti‐CSC agent may lead to improved disease control. We used CSC‐associated gene signatures to identify drug candidates that may inhibit CSC growth by reversing the CSC gene signature. Thiostrepton, a natural cyclic oligopeptide antibiotic, was the top‐ranked candidate. In non–small‐cell lung cancer (NSCLC) cells, thiostrepton inhibited CSC growth in vitro and reduced protein expression of cancer stemness markers, including CD133, Nanog and Oct4A. In addition, metastasis‐associated Src tyrosine kinase signalling, cell migration and epithelial‐to‐mesenchymal transition (EMT) were all inhibited by thiostrepton. Mechanistically, thiostrepton treatment led to elevated levels of tumour suppressor miR‐98. Thiostrepton combined with gemcitabine synergistically suppressed NSCLC cell growth and induced apoptosis. The inhibition of NSCLC tumours and CSC growth by thiostrepton was also demonstrated in vivo. Our findings indicate that thiostrepton, an established drug identified in silico, is an inhibitor of CSC growth and a potential enhancer of chemotherapy in NSCLC. 相似文献
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Shoujie Feng Li Zhang Xiucheng Liu Guangbin Li Biao Zhang Ziwen Wang Hao Zhang Haitao Ma 《Journal of cellular and molecular medicine》2020,24(14):7789-7801
AMP‐activated protein kinase (AMPK) serves as a “supermetabolic regulator” that helps maintain cellular energy homeostasis. However, the role of AMPK in glucose metabolism reprogramming in lung cancer remains unclear. Here, our study shows that low AMPK expression correlates with metastasis and clinicopathologic parameters of non–small‐cell lung cancer. Low AMPK significantly enhances the Warburg effect in HBE and A549 cells, which in turn induces the expression of mesenchymal markers and enhances their invasion and migration. At the mechanistic level, low AMPK up‐regulates HK2 expression and glycolysis levels through HDAC4 and HDAC5. Collectively, our findings demonstrate that low AMPK‐induced metabolism can promote epithelial‐mesenchymal transition progression in normal bronchial epithelial cells and lung cancer cells, and increase the risk for tumour metastasis. 相似文献
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Lan Hong Yifeng Wang Wangsheng Chen Shuying Yang 《Journal of cellular biochemistry》2018,119(9):7431-7440
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《中国生物化学与分子生物学报》2021,37(10):1336-1344
肌动蛋白样6A(actin-like 6A,ACTL6A),又被称为BAF53A,是组成染色质重构复合体SWI/SNF亚基之一,在细胞干性维持中发挥关键作用。近期研究发现,ACTL6A在肿瘤发生发展中起重要作用,但ACTL6A在顺铂耐药中的功能尚不明确。本文探讨了ACTL6A在肺腺癌细胞干性维持及顺铂耐药中的生物学功能和分子机制。首先,通过TCGA、GEO和GEPIA数据库分析发现,ACTL6A在肺腺癌组织及顺铂耐药细胞中高表达(P＜0.05),且其高表达与肺腺癌患者的不良预后正相关。细胞生物学结果显示,敲低ACTL6A表达显著增强A549细胞对顺铂的敏感性(P＜0.01),降低肿瘤干细胞成球数量(P＜0.01),抑制细胞迁移(P＜0.01),促进细胞凋亡(P＜0.001)。蛋白质免疫印迹结果显示,敲低ACTL6A可使上皮标志物E-钙黏着蛋白(E-cadherin)表达增加,间质标志物N-钙黏着蛋白(N-cadherin)、波形蛋白(vimentin)和Twist表达水平降低,逆转细胞发生上皮间质转化。同时,敲低ACTL6A后肿瘤干细胞标志物ALDH3A1、ALDH4A1、SOX2、OCT4和Nanog表达水平降低。进一步对Hippo/YAP信号通路相关蛋白质进行分析,结果表明,敲低ACTL6A表达后,Hippo信号通路中的beta-TRCP、YAP表达降低,但YAP磷酸化(s127和s397)表达增加,导致YAP进入细胞核减少,不能诱导相关基因表达。综上所述,ACTL6A抑制Hippo信号通路激活,维持肿瘤干细胞干性,促进A549细胞发生顺铂耐药。 相似文献
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《中国生物化学与分子生物学报》2021,37(10):1336-1344
肌动蛋白样6A(actin-like 6A,ACTL6A),又被称为BAF53A,是组成染色质重构复合体SWI/SNF亚基之一,在细胞干性维持中发挥关键作用。近期研究发现,ACTL6A在肿瘤发生发展中起重要作用,但ACTL6A在顺铂耐药中的功能尚不明确。本文探讨了ACTL6A在肺腺癌细胞干性维持及顺铂耐药中的生物学功能和分子机制。首先,通过TCGA、GEO和GEPIA数据库分析发现,ACTL6A在肺腺癌组织及顺铂耐药细胞中高表达(P＜0.05),且其高表达与肺腺癌患者的不良预后正相关。细胞生物学结果显示,敲低ACTL6A表达显著增强A549细胞对顺铂的敏感性(P＜0.01),降低肿瘤干细胞成球数量(P＜0.01),抑制细胞迁移(P＜0.01),促进细胞凋亡(P＜0.001)。蛋白质免疫印迹结果显示,敲低ACTL6A可使上皮标志物E-钙黏着蛋白(E-cadherin)表达增加,间质标志物N-钙黏着蛋白(N-cadherin)、波形蛋白(vimentin)和Twist表达水平降低,逆转细胞发生上皮间质转化。同时,敲低ACTL6A后肿瘤干细胞标志物ALDH3A1、ALDH4A1、SOX2、OCT4和Nanog表达水平降低。进一步对Hippo/YAP信号通路相关蛋白质进行分析,结果表明,敲低ACTL6A表达后,Hippo信号通路中的beta-TRCP、YAP表达降低,但YAP磷酸化(s127和s397)表达增加,导致YAP进入细胞核减少,不能诱导相关基因表达。综上所述,ACTL6A抑制Hippo信号通路激活,维持肿瘤干细胞干性,促进A549细胞发生顺铂耐药。 相似文献
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Xiaowei Chen Yanfei Jia Yujie Zhang Dajie Zhou Haiji Sun Xiaoli Ma 《Journal of cellular and molecular medicine》2020,24(4):2497-2506
Recent studies have showed that α5 nicotinic acetylcholine receptor (α5‐nAChR) is closely associated with nicotine‐related lung cancer. Our previous studies also demonstrated that α5‐nAChR mediates nicotine‐induced lung carcinogenesis. However, the mechanism by which α5‐nAChR functions in lung carcinogenesis remains to be elucidated. Jab1/Csn5 is a key regulatory factor in smoking‐induced lung cancer. In this study, we explored the underlying mechanisms linking the α5‐nAChR‐Jab1/Csn5 axis with lung cancer epithelial‐mesenchymal transition (EMT) and metastasis, which may provide potential therapeutic targets for future lung cancer treatments. Our results demonstrated that the expression of α5‐nAChR was correlated with the expression of Jab1/Csn5 in lung cancer tissues and lung cancer cells. α5‐nAChR expression is associated with Jab1/Csn5 expression in lung tumour xenografts in mice. In vitro, the expression of α5‐nAChR mediated Stat3 and Jab1/Csn5 expression, significantly regulating the expression of the EMT markers, N‐cadherin and Vimentin. In addition, the down‐regulation of α5‐nAChR or/and Stat3 reduced Jab1/Csn5 expression, while the silencing of α5‐nAChR or Jab1/Csn5 inhibited the migration and invasion of NSCLC cells. Mechanistically, α5‐nAChR contributes to EMT and metastasis by regulating Stat3‐Jab1/Csn5 signalling in NSCLC, suggesting that α5‐nAChR may be a potential target in NSCLC diagnosis and immunotherapy. 相似文献
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多项研究发现CXCR4在各种类型的癌症中高表达,然而尚不清楚CXCR4在食管癌细胞生长和转移中的作用。本研究检测了CXCR4在食管癌组织和细胞系(TE-1)中的表达,并通过转染CXCR4-短发夹RNA(CXCR4-sh RNA)慢病毒来敲低TE-1细胞中CXCR4的表达。应用PI3K/AKT抑制剂LY294002(50μmol/L)处理TE-1细胞12 h来考察AKT信号在食管癌细胞生长和转移中的作用;应用蛋白质印迹分析检测AKT和Rho家族蛋白(RhoA,Rac-1和Cdc42)的表达;应用CCK-8实验检测细胞增殖;Transwell实验检测细胞侵袭;对雄性BALB/c-nu/nu裸鼠皮下注射转染CXCR4-shRNA的TE-1细胞建立肿瘤异种移植模型。研究显示,CXCR4在食管癌组织中的表达水平明显高于癌旁组织,并且与TNM分期和淋巴结转移有关。CXCR4在人食管鳞状细胞癌细胞系(TE-1)中的表达水平明显高于人正常食管上皮细胞系(human normal esophageal epithelial cell line,HEEC)。敲低CXCR4能抑制食管鳞状细胞癌细胞的增殖和侵袭能力,并抑制肿瘤异种移植裸鼠的肿瘤形成。敲低CXCR4抑制了AKT的磷酸化及RhoA、Rac-1和Cdc42的表达。此外,PI3K/AKT抑制剂LY294002处理显著降低了TE-1细胞中AKT的磷酸化,并降低了RhoA、Rac-1和Cdc42的表达。本研究表明,CXCR4在食管癌患者中上调,与不良预后相关。下调CXCR4的表达可在体内和体外抑制食管癌肿瘤的生长和转移。下调CXCR4可通过抑制AKT信号的激活来抑制Rho家族粘附/侵袭相关蛋白的表达,从而抑制肿瘤转移。 相似文献