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Journal of Experimental & Clinical Cancer Research: CR

Li-Min Xu, Lei Chen, Feng Li, Run Zhang, Zong-Yang Li, Fan-Fan Chen, Xiao-Dan Jiang
BACKGROUND: Gliomas are the most common type of primary brain tumour in the central nervous system of adults. The long non-coding RNA (lncRNA) HOXA transcript at the distal tip (HOTTIP) is transcribed from the 5' tip of the HOXA locus. HOTTIP has recently been shown to be dysregulated and play an important role in the progression of several cancers. However, little is known about whether and how HOTTIP regulates glioma development. METHODS: In this study, we assayed the expression of HOTTIP in glioma tissue samples and glioma cell lines using real-time polymerase chain reaction and defined the biological functions of HOTTIP using the CCK-8 assay, flow cytometry, terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL assay) and tumour formation assay in a nude mouse model...
October 12, 2016: Journal of Experimental & Clinical Cancer Research: CR
Baochang Qi, Tiecheng Yu, Chengxue Wang, Tiejun Wang, Jihang Yao, Xiaomeng Zhang, Pengfei Deng, Yongning Xia, Wolfgang G Junger, Dahui Sun
BACKGROUND: Osteosarcoma is the most prevalent primary malignant bone tumor, but treatment is difficult and prognosis remains poor. Recently, large-dose chemotherapy has been shown to improve outcome but this approach can cause many side effects. Minimizing the dose of chemotherapeutic drugs and optimizing their curative effects is a current goal in the management of osteosarcoma patients. METHODS: In our study, trypan blue dye exclusion assay was performed to investigate the optimal conditions for the sensitization of osteosarcoma U2OS cells...
October 3, 2016: Journal of Experimental & Clinical Cancer Research: CR
Shou-Hua Wang, Fei Ma, Zhao-Hui Tang, Xiao-Cai Wu, Qiang Cai, Ming-Di Zhang, Ming-Zhe Weng, Di Zhou, Jian-Dong Wang, Zhi-Wei Quan
BACKGROUND: Long non-coding RNA (lncRNA) H19 has been reported to involve in many kinds of human cancers and functions as an oncogene. Our previous study found that H19 was over-expressed in gallbladder cancer (GBC) and was shown to promote tumor development in GBC. However, the competing endogenous RNA (ceRNA) regulatory network involving H19 in GBC progression has not been fully elucidated. We aim to detect the role of H19 as a ceRNA in GBC. METHODS AND RESULTS: In this study, the expression of H19 and miR-342-3p were analyzed in 35 GBC tissues and matched normal tissues by using quantitative polymerase chain reaction (qRT-PCR)...
October 3, 2016: Journal of Experimental & Clinical Cancer Research: CR
Chengcheng Yang, Huangzhen Wang, Boxiang Zhang, Yimeng Chen, Yamin Zhang, Xin Sun, Guodong Xiao, Kejun Nan, Hong Ren, Sida Qin
BACKGROUND: LCL161, a novel Smac mimetic, is known to have anti-tumor activity and improve chemosensitivity in various cancers. However, the function and mechanisms of the combination of LCL161 and paclitaxel in non-small cell lung cancer (NSCLC) remain unknown. METHODS: Cellular inhibitor of apoptotic protein 1 and 2 (cIAP1&2) expression in NSCLC tissues and adjacent non-tumor tissues were assessed by immunohistochemistry. The correlations between cIAP1&2 expression and clinicopathological characteristics, prognosis were analyzed...
September 30, 2016: Journal of Experimental & Clinical Cancer Research: CR
Zhen Qu, Junhua Wu, Junyi Wu, Dongjun Luo, Chunping Jiang, Yitao Ding
BACKGROUND: Exosomes are carriers of intercellular information and regulate the tumor microenvironment. They play an important role in drug resistance by transporting RNA molecules and proteins. However, their effects on sorafenib resistance in hepatocellular carcinoma (HCC) are not completely understood. METHODS: Exosomes were isolated from two invasive hepatoma cell lines (MHCC-97 L and MHCC-97H), and their roles in regulating sorafenib resistance in liver cancer cells as well as the underlying molecular mechanisms were determined...
September 30, 2016: Journal of Experimental & Clinical Cancer Research: CR
Mohanad Aldarouish, Cailian Wang
Among several types of tumor, lung cancer is considered one of the most fatal and still the main cause of cancer-related deaths. Although chemotherapeutic agents can improve survival and quality of life compared with symptomatic treatment, cancers usually still progress after chemotherapy and are often aggravated by serious side effects. In the last few years there has been a growing interest in immunotherapy for lung cancer based on promising preliminary results in achieving meaningful and durable treatments responses with minimal manageable toxicity...
September 29, 2016: Journal of Experimental & Clinical Cancer Research: CR
Mihaela Ignat, Cherif Youssef Akladios, Véronique Lindner, Konstantin Khetchoumian, Marius Teletin, Didier Muttter, Pierre Marc Aprahamian, Jacques Marescaux
BACKGROUND: Genetically induced hepatocellular carcinoma (HCC) models are generally used to investigate carcinogenesis pathways, but very few attempts were made to valorize them for pharmacological testing. This study describes a micro-computed tomography (micro-CT) - based methodology for the diagnostic and lifelong follow-up of HCC in the hepatocyte-specific Trim24-null mouse line. Myo-inositol trispyrophosphate (ITPP) was tested as anti-cancer drug. METHODS: Partial hepatectomy was performed in 2 months-old Trim24-null mice, in order to accelerate the carcinogenesis process...
September 29, 2016: Journal of Experimental & Clinical Cancer Research: CR
Wenting Xu, Zhen Yang, Nonghua Lu
Exosomes are nanoscale extracellular membrane vesicles that are created by the fusion of an intracellular multivesicular body with the cell membrane. They are widely distributed in serum, urine, saliva and other biological fluids. As important transfer vectors for intercellular communication and genetic material, exosomes can stimulate target cells directly via receptor-mediated interactions or via the transfer of various bioactive molecules, such as cell membrane receptors, proteins, mRNAs and microRNAs, thus exerting their biological functions...
September 29, 2016: Journal of Experimental & Clinical Cancer Research: CR
Corina Buta, Eva Benabou, Marie Lequoy, Hélène Régnault, Dominique Wendum, Fatiha Merabtene, Hamza Chettouh, Lynda Aoudjehane, Filomena Conti, Yves Chrétien, Olivier Scatton, Olivier Rosmorduc, Françoise Praz, Laetitia Fartoux, Christèle Desbois-Mouthon
No abstract text is available yet for this article.
September 28, 2016: Journal of Experimental & Clinical Cancer Research: CR
Roberta Visconti, Rosa Della Monica, Domenico Grieco
Major currently used anticancer therapeutics either directly damage DNA or target and upset basic cell division mechanisms like DNA replication and chromosome segregation. These insults elicit activation of cell cycle checkpoints, safeguard mechanisms that cells implement to correctly complete cell cycle phases, repair damage or eventually commit suicide in case damage is unrepairable. Although cancer cells appear to be advantageously defective in some aspects of checkpoint physiology, recent acquisitions on the biochemical mechanisms of the various checkpoints are offering new therapeutic approaches against cancer...
September 27, 2016: Journal of Experimental & Clinical Cancer Research: CR
Run-Wei Yang, Ying-Yue Zeng, Wen-Ting Wei, Yan-Mei Cui, Hui-Ying Sun, Yue-Long Cai, Xin-Xin Nian, Yun-Teng Hu, Yu-Ping Quan, Sheng-Lu Jiang, Meng Wang, Ya-Li Zhao, Jun-Feng Qiu, Ming-Xuan Li, Jia-Huan Zhang, Mei-Rong He, Li Liang, Yan-Qing Ding, Wen-Ting Liao
BACKGROUND: Transducin-like enhancer of Split3 (TLE3) serves as a transcriptional corepressor during cell differentiation and shows multiple roles in different kinds of cancers. Recently, TLE3 together with many other genes involved in Wnt/β-catenin pathway were detected hyper-methylated in colorectal cancer (CRC). However, the potential role and the underlying mechanism of TLE3 in CRC progression remain scarce. METHODS: Gene expression profiles were analyzed in The Cancer Genome Atlas (TCGA) microarray dataset of 41 normal colorectal intestine tissues and 465 CRC tissues...
September 27, 2016: Journal of Experimental & Clinical Cancer Research: CR
Jian Gao, Camilla H Ulekleiv, Trond S Halstensen
BACKGROUND: Increased expression of epidermal growth factor receptor (EGFR) and its ligands is associated with poor prognosis and chemoresistance in many carcinoma types, but its role in head and neck squamous cell carcinoma (HNSCC) is unclear. Our aim was to clarify whether mRNA expression of EGFR-ligands was linked to prognosis and cisplatin resistance, and if so, which ligand was most important and how was the expression regulated. METHODS: To examine the prognostic effect of EGFR-ligand expression, we analyzed tumorous mRNA expression in 399 HNSCC patients...
September 26, 2016: Journal of Experimental & Clinical Cancer Research: CR
Guohe Song, Shifeng Xu, Hong Zhang, Yupeng Wang, Chao Xiao, Tao Jiang, Leilei Wu, Tao Zhang, Xing Sun, Lin Zhong, Chongzhi Zhou, Zhaowen Wang, Zhihai Peng, Jian Chen, Xiaoliang Wang
BACKGROUND: Tissue inhibitor matrix metalloproteinase 1 (TIMP1) plays a vital role in carcinogenesis, yet its precise functional roles and regulation remain unclear. In this study, we aim to investigate its biological function and clinical significance in human colon cancer. METHODS: We analyzed the expression of TIMP1 in both public database (Oncomine and TCGA) and 94 cases of primary colon cancer and matched normal colon tissue specimens. The underlying mechanisms of altered TIMP1 expression on cell tumorigenesis, proliferation, and metastasis were explored in vitro and in vivo...
September 20, 2016: Journal of Experimental & Clinical Cancer Research: CR
Zhirui Zhang, Hong-Mei Li, Can Zhou, Qixiang Li, Linyan Ma, Zixuan Zhang, Yiming Sun, Lirong Wang, Xudong Zhang, Bing Zhu, Young-Soo Hong, Cheng-Zhu Wu, Hao Liu
BACKGROUND: Hsp90 proteins are important therapeutic targets for many anti-cancer drugs in clinical trials. Geldanamycin (GA) was identified as the first natural inhibitor of Hsp90, increasing evidence suggests that GA was not a good choice for clinical trials. In this study, we investigated two new non-benzoquinone geldanamycin analogs of Hsp90 inhibitors, DHQ3 and 17-demethoxy-reblastatin (17-DR), to explore the molecular mechanisms of their anti-cancer activity in vivo and vitro. METHODS: MTT and colony formation assays were used to measure cell viability...
2016: Journal of Experimental & Clinical Cancer Research: CR
Nirmala Jagadish, Sumit Agarwal, Namita Gupta, Rukhsar Fatima, Sonika Devi, Vikash Kumar, Vaishali Suri, Rajive Kumar, Vitusha Suri, Trilok Chand Sadasukhi, Anju Gupta, Abdul S Ansari, Nirmal Kumar Lohiya, Anil Suri
BACKGROUND: Breast cancer is one of the leading cause of cancer-related deaths in women worldwide and increasing rapidly in developing countries. In the present study, we investigated the potential role and association of HSP70-2 with breast cancer. METHODS: HSP70-2 expression was examined in 154 tumor and 103 adjacent non-cancerous tissue (ANCT) specimens and breast cancer cell lines (MCF7, BT-474, SK-BR-3 and MDA-MB-231) by RT-PCR, quantitative-PCR, immunohistochemistry, Western blotting, flow cytometry and indirect immunofluorescence...
2016: Journal of Experimental & Clinical Cancer Research: CR
Yuanmei Zhai, Jing Zhang, Hui Wang, Wei Lu, Sihong Liu, Yehua Yu, Wei Weng, Zhiyong Ding, Qi Zhu, Jun Shi
BACKGROUND: Chemo-resistance is still a major obstacle in efforts to overcome acute myeloid leukemia (AML). An emerging concept has proposed that interactions between the bone marrow (BM) microenvironment and leukemia cells reduce the sensitivity of the leukemia cells to chemotherapy. As an important element of the tumor microenvironment, the cancer-associated fibroblasts (CAFs) are considered to be activated modulators in the chemo-resistance of many solid tumors. But their contribution to AML has yet to be fully understood...
2016: Journal of Experimental & Clinical Cancer Research: CR
Cinzia Pisani, Annalisa Onori, Francesca Gabanella, Francesca Delle Monache, Antonella Borreca, Martine Ammassari-Teule, Maurizio Fanciulli, Maria Grazia Di Certo, Claudio Passananti, Nicoletta Corbi
BACKGROUND: We have previously shown that the eukaryotic elongation factor subunit 1B gamma (eEF1Bγ) interacts with the RNA polymerase II (pol II) alpha-like subunit "C" (POLR2C), alone or complexed, in the pol II enzyme. Moreover, we demonstrated that eEF1Bγ binds the promoter region and the 3' UTR mRNA of the vimentin gene. These events contribute to localize the vimentin transcript and consequentially its translation, promoting a proper mitochondrial network. METHODS: With the intent of identifying additional transcripts that complex with the eEF1Bγ protein, we performed a series of ribonucleoprotein immunoprecipitation (RIP) assays using a mitochondria-enriched heavy membrane (HM) fraction...
2016: Journal of Experimental & Clinical Cancer Research: CR
Huan-Lei Wu, Sen-Mao Li, Jia Hu, Xiao Yu, Hua Xu, Zhong Chen, Zhang-Qun Ye
BACKGROUND: The recently identified phenomenon of double-stranded RNA (dsRNA)-mediated gene activation (RNAa) has been studied extensively, as it is present in humans, mice, and Caenorhabditis elegans, suggesting that dsRNA-mediated RNAa is an evolutionarily conserved mechanism. Previous studies have shown that dsP21-322 can induce tumor suppressor gene p21 expression in several human cancer cells. Nonetheless, the role of dsRNAs in the activation of gene expression, including their target molecules and associated key factors, remains poorly understood...
2016: Journal of Experimental & Clinical Cancer Research: CR
Chandra Prakash Prasad, Shivendra Kumar Chaurasiya, William Guilmain, Tommy Andersson
BACKGROUND: WNT5A (-/-) mammary tissue has been shown to exhibit increased ductal elongation, suggesting elevated mammary cell migration. Increased epithelial cell migration/invasion has often but not always been linked to the epithelial-mesenchymal transition (EMT). In the current study, we investigated the loss of WNT5A in HB2 human mammary epithelial cells and hypothesized that this loss increased their invasion via the EMT. Based on these results, we postulated that suppression of breast cancer cell migration and invasion by WNT5A is due to EMT reversal...
2016: Journal of Experimental & Clinical Cancer Research: CR
Dong-Liang Chen, Huai-Qiang Ju, Yun-Xin Lu, Le-Zong Chen, Zhao-Lei Zeng, Dong-Sheng Zhang, Hui-Yan Luo, Feng Wang, Miao-Zhen Qiu, De-Shen Wang, Da-Zhi Xu, Zhi-Wei Zhou, Helene Pelicano, Peng Huang, Dan Xie, Feng-Hua Wang, Yu-Hong Li, Rui-Hua Xu
BACKGROUND: Long non-coding RNAs (lncRNAs) have emerged as critical regulators of tumor progression. However, the role and molecular mechanism of lncRNA XIST in gastric cancer is still unknown. METHODS: Real-time PCR analysis was performed to measure the expression levels of lncRNA XIST in gastric cancer tissues and cell lines, the correlation between lncRNA XIST expression and clinicopathological characteristics and prognosis was analyzed in gastric cancer patients...
2016: Journal of Experimental & Clinical Cancer Research: CR
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