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Molecular Cancer

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https://www.readbyqxmd.com/read/29212548/generation-of-stable-pdx-derived-cell-lines-using-conditional-reprogramming
#1
LETTER
Alexandra Borodovsky, Travis J McQuiston, Daniel Stetson, Ambar Ahmed, David Whitston, Jingwen Zhang, Michael Grondine, Deborah Lawson, Sharon S Challberg, Michael Zinda, Brian A Pollok, Brian A Dougherty, Celina M D'Cruz
Efforts to develop effective cancer therapeutics have been hindered by a lack of clinically predictive preclinical models which recapitulate this complex disease. Patient derived xenograft (PDX) models have emerged as valuable tools for translational research but have several practical limitations including lack of sustained growth in vitro. In this study, we utilized Conditional Reprogramming (CR) cell technology- a novel cell culture system facilitating the generation of stable cultures from patient biopsies- to establish PDX-derived cell lines which maintain the characteristics of the parental PDX tumor...
December 6, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29197379/factors-involved-in-cancer-metastasis-a-better-understanding-to-seed-and-soil-hypothesis
#2
REVIEW
Qiang Liu, Hongfei Zhang, Xiaoli Jiang, Caiyun Qian, Zhuoqi Liu, Daya Luo
Metastasis has intrigued researchers for more than 100 years. Despite the development of technologies and therapeutic strategies, metastasis is still the major cause of cancer-related death until today. The famous "seed and soil" hypothesis is widely cited and accepted, and it still provides significant instructions in cancer research until today. To our knowledge, there are few reviews that comprehensively and correlatively focus on both the seed and soil factors involved in cancer metastasis; moreover, despite the fact that increasingly underlying mechanisms and concepts have been defined recently, previous perspectives are appealing but may be limited...
December 2, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29187213/jmjd6-promotes-melanoma-carcinogenesis-through-regulation-of-the-alternative-splicing-of-pak1-a-key-mapk-signaling-component
#3
Xujun Liu, Wenzhe Si, Xinhua Liu, Lin He, Jie Ren, Ziran Yang, Jianguo Yang, Wanjin Li, Shumeng Liu, Fei Pei, Xiaohan Yang, Luyang Sun
BACKGROUND: Melanoma, originated from melanocytes located on the basal membrane of the epithelial tissue, is the most aggressive form of skin cancer that accounts for 75% of skin cancer-related death. Although it is believed that BRAF mutation and the mitogen-activated protein kinase (MAPK) pathway play critical roles in the pathogenesis of melanoma, how the MAPK signaling is regulated in melanoma carcinogenesis is still not fully understood. METHODS: We characterized JMJD6 expression in melanoma tissue array by immunohistochemistry analysis...
November 29, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29162158/long-noncoding-rna-malat1-regulates-autophagy-associated-chemoresistance-via-mir-23b-3p-sequestration-in-gastric-cancer
#4
Hu YiRen, Yu YingCong, You Sunwu, Li Keqin, Tong Xiaochun, Chen Senrui, Chen Ende, Lin XiZhou, Chen Yanfan
BACKGROUND: Chemoresistance has long been recognized as a major obstacle in cancer therapy. Clarifying the underlying mechanism of chemoresistance would result in novel strategies to improve patient's response to chemotherapeutics. METHODS: lncRNA expression levels in gastric cancer (GC) cells was detected by quantitative real-time PCR (qPCR). MALAT1 shRNAs and overexpression vector were transfected into GC cells to down-regulate or up-regulate MALAT1 expression...
November 21, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29149895/novel-insights-into-chromosomal-conformations-in-cancer
#5
REVIEW
Ruobing Jia, Peiwei Chai, He Zhang, Xianqun Fan
Exploring gene function is critical for understanding the complexity of life. DNA sequences and the three-dimensional organization of chromatin (chromosomal interactions) are considered enigmatic factors underlying gene function, and interactions between two distant fragments can regulate transactivation activity via mediator proteins. Thus, a series of chromosome conformation capture techniques have been developed, including chromosome conformation capture (3C), circular chromosome conformation capture (4C), chromosome conformation capture carbon copy (5C), and high-resolution chromosome conformation capture (Hi-C)...
November 17, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29137633/bi-directional-exosome-driven-intercommunication-between-the-hepatic-niche-and-cancer-cells
#6
Nikolina Dioufa, Amanda M Clark, Bo Ma, Colin H Beckwitt, Alan Wells
BACKGROUND: Our understanding of the multiple roles exosomes play during tumor progression is still very poor and the contribution of the normal tissue derived exosomes in distant seeding and tumor outgrowth has also not been widely appreciated. METHODS: Using our all-human liver microphysiological system (MPS) platform as a model to closely recapitulate the early metastatic events, we isolated exosomes from both tumor cells and liver microenvironment. RESULTS: We observed that while priming of the hepatic niche (HepN) with MDA-231 breast cancer derived exosomes facilitated seeding of the cancer cells in the liver, subsequent tumor outgrowth was diminished; this was consistent with increased entry into dormancy...
November 14, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29132362/knockdown-of-sox2ot-inhibits-the-malignant-biological-behaviors-of-glioblastoma-stem-cells-via-up-regulating-the-expression-of-mir-194-5p-and-mir-122
#7
Rui Su, Shuo Cao, Jun Ma, Yunhui Liu, Xiaobai Liu, Jian Zheng, Jiajia Chen, Libo Liu, Heng Cai, Zhen Li, Lini Zhao, Qianru He, Yixue Xue
BACKGROUND: Accumulating evidence has highlighted the potential role of long non-coding RNAs (lncRNAs) in the biological behaviors of glioblastoma stem cells (GSCs). Here, we elucidated the function and possible molecular mechanisms of the effect of lncRNA-SOX2OT on the biological behaviors of GSCs. RESULTS: Real-time PCR demonstrated that SOX2OT expression was up-regulated in glioma tissues and GSCs. Knockdown of SOX2OT inhibited the proliferation, migration and invasion of GSCs, and promoted GSCs apoptosis...
November 13, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29126425/hdac7-promotes-lung-tumorigenesis-by-inhibiting-stat3-activation
#8
Yubin Lei, Lingling Liu, Shujing Zhang, Shicheng Guo, Xiaoqing Li, Jiucun Wang, Bo Su, Yuchao Fang, Xiaofeng Chen, Hengning Ke, Wufan Tao
BACKGROUND: Lung cancer is the leading cause of cancer death worldwide. However, the molecular mechanisms underlying lung cancer development have not been fully understood. The functions of histone deacetylases (HDACs), a class of total eighteen proteins (HDAC1-11 and SIRT1-7 in mammals) that deacetylate histones and non-histone proteins, in cancers are largely unknown. METHODS: Hdac7 (+/-)/K-Ras mice and HDAC7-depleted human lung cancer cell lines were used as models for studying the function of Hdac7 gene in lung cancer...
November 10, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29121972/long-noncoding-rna-norad-a-novel-competing-endogenous-rna-enhances-the-hypoxia-induced-epithelial-mesenchymal-transition-to-promote-metastasis-in-pancreatic-cancer
#9
Hongzhe Li, Xinjing Wang, Chenlei Wen, Zhen Huo, Weishen Wang, Qian Zhan, Dongfeng Cheng, Hao Chen, Xiaxing Deng, Chenghong Peng, Baiyong Shen
BACKGROUND: Pancreatic cancer, one of the top two most fatal cancers, is characterized by a desmoplastic reaction that creates a dense microenvironment, promoting hypoxia and inducing the epithelial-to-mesenchymal transition (EMT) to facilitate invasion and metastasis. Recent evidence indicates that the long noncoding RNA NORAD may be a potential oncogenic gene and that this lncRNA is significantly upregulated during hypoxia. However, the overall biological role and clinical significance of NORAD remains largely unknown...
November 9, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29110659/validation-and-comparison-of-the-molecular-classifications-of-pancreatic-carcinomas
#10
LETTER
David J Birnbaum, Pascal Finetti, Daniel Birnbaum, Emilie Mamessier, François Bertucci
Four molecular classifications of pancreatic ductal adenocarcinoma (PDAC), biologically and clinically relevant and based on gene expression profiles, were established in the recent years, including the Collisson's, Moffitt's ("tumor" and "stroma" classifications), and Bailey's classifications. The aim of this study was to validate the prognostic value of the Moffitt's classifications and to compare the Collisson's, Moffitt's, and Bailey's classifications in a large series of samples. We collected clinical and gene expression data of PDAC samples from 15 public data sets, resulting in a total of 846 primary cancer samples, including 601 with survival annotation...
November 6, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29078789/mir-92b-3p-acts-as-a-tumor-suppressor-by-targeting-gabra3-in-pancreatic-cancer
#11
Manmei Long, Ming Zhan, Sunwang Xu, Ruimeng Yang, Wei Chen, Shilei Zhang, Yongheng Shi, Qiao He, Man Mohan, Qiang Liu, Jian Wang
BACKGROUND: MicroRNAs (miRNAs) can act as oncogenes or tumor suppressors by controlling cell proliferation, differentiation, metastasis and apoptosis, and miRNA dysregulation is involved in the development of pancreatic cancer (PC). Our previous study demonstrated that Gabra3 plays critical roles in cancer progression. However, whether Gabra3 is regulated by miRNAs in PC remains unknown. METHODS: The expression levels of miR-92b-3p and Gabra3 were measured by quantitative PCR (qPCR), immunoblotting, in situ hybridization (ISH) and immunohistochemistry (IHC)...
October 27, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29070041/lncrna-rp11-436h11-5-functioning-as-a-competitive-endogenous-rna-upregulates-bcl-w-expression-by-sponging-mir-335-5p-and-promotes-proliferation-and-invasion-in-renal-cell-carcinoma
#12
Kefeng Wang, Wei Jin, Yan Song, Xiang Fei
BACKGROUND: Accumulating evidence indicates that long non-coding RNAs (lncRNAs) play a crucial role in tumorigenesis. Here, we report a novel lncRNA, RP11-436H11.5, that regulates renal cell carcinoma (RCC) cell proliferation and invasion by sponging miR-335-5p. METHODS: Expression of lncRNA RP11-436H11.5 was determined by a qRT-PCR assay in RCC tissues. RCC cell proliferation and invasion were measured by a cell proliferation assay and a transwell invasion assay...
October 25, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29061191/profiling-clinicopathological-correlation-and-functional-validation-of-specific-long-non-coding-rnas-for-hepatocellular-carcinoma
#13
LETTER
Jian Yao, Lingjiao Wu, Xiaohua Meng, Huanxia Yang, Shujun Ni, Qiangfeng Wang, Jiawei Zhou, Qiong Zhang, Kunkai Su, Li Shao, Qingyi Cao, Mingding Li, Fusheng Wu, Lanjuan Li
BACKGROUND: Hepatocellular carcinoma (HCC) is one of the most prevalent and aggressive malignancies worldwide. Studies seeking to advance the overall understanding of lncRNA profiling in HCC remain rare. METHODS: The transcriptomic profiling of 12 HCC tissues and paired adjacent normal tissues was determined using high-throughput RNA sequencing. Fifty differentially expressed mRNAs (DEGs) and lncRNAs (DELs) were validated in 21 paired HCC tissues via quantitative real-time PCR...
October 23, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29061150/dysregulated-long-noncoding-rnas-lncrnas-in-hepatocellular-carcinoma-implications-for-tumorigenesis-disease-progression-and-liver-cancer-stem-cells
#14
REVIEW
Xiaoqi Huo, Shuanglin Han, Guang Wu, Olivier Latchoumanin, Gang Zhou, Lionel Hebbard, Jacob George, Liang Qiao
Hepatocellular carcinoma (HCC) is one of the most common malignant tumours with a poor prognosis worldwide. While early stage tumours can be treated with curative approaches such as liver transplantation or surgical resection, these are only suitable for a minority of patients. Those with advanced stage disease are only suitable for supportive approaches and most are resistant to the conventional chemotherapy or radiotherapy. Liver cancer stem cells (LCSCs) are a small subset of cancer cells with unlimited differentiation ability and tumour forming potential...
October 23, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29041978/linc-ror-promotes-mapk-erk-signaling-and-confers-estrogen-independent-growth-of-breast-cancer
#15
Wan-Xin Peng, Jian-Guo Huang, Liu Yang, Ai-Hua Gong, Yin-Yuan Mo
BACKGROUND: The conversion from estrogen-dependent to estrogen-independent state of ER+ breast cancer cells is the key step to promote resistance to endocrine therapies. Although the crucial role of MAPK/ERK signaling pathway in estrogen-independent breast cancer cell growth is well established, the underlying mechanism is not fully understood. METHODS: In this study, we profiled lncRNA expression against a focused group of lncRNAs selected from lncRNA database...
October 17, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29041935/a-long-non-coding-rna-hottip-expression-is-associated-with-disease-progression-and-predicts-outcome-in-small-cell-lung-cancer-patients
#16
Yanqin Sun, Yuanyuan Zhou, Yifeng Bai, Qiongyao Wang, Jiarong Bao, Yingshan Luo, Ying Guo, Linlang Guo
BACKGROUND: Despite progress in treatment of small cell lung cancer (SCLC), the biology of the tumor still remains poorly understood. Recently, we globally investigated the contributions of lncRNA in SCLC with a special focus on sponge regulatory network. Here we report lncRNA HOTTIP, which is specifically amplified in SCLC, is associated with SCLC proliferation and poor prognosis of patients. METHODS: RT-qPCR was used to investigate the expression of HOTTIP in SCLC tissues and cell lines...
October 17, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29041931/reprogramming-of-stromal-fibroblasts-by-snai2-contributes-to-tumor-desmoplasia-and-ovarian-cancer-progression
#17
Zongyuan Yang, Xin Yang, Sen Xu, Ping Jin, Xiaoting Li, Xiao Wei, Dan Liu, Kecheng Huang, Sixiang Long, Ya Wang, Chaoyang Sun, Gang Chen, Junbo Hu, Li Meng, Ding Ma, Qinglei Gao
BACKGROUND: Molecular profiling in ovarian cancer (OC) revealed that the desmoplasia subtype presented the poorest prognosis, highlighting the contribution of stromal fibroblasts in tumor progression. This study aimed to investigate the molecular characteristics of SNAI2 driving the transcriptional reprogramming of fibroblasts within tumors. METHODS: SNAI2 expression was evaluated in microdissected profiles of various cancers and in various molecular subtypes of OC...
October 17, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29037201/evaluation-on-the-diagnostic-and-prognostic-values-of-long-non-coding-rna-blacat1-in-common-types-of-human-cancer
#18
LETTER
Xiaoli Chen, Meiyu Dai, Hongzhen Zhu, Jinwan Li, Zhizhuo Huang, Xuexiang Liu, Yujie Huang, Jingfan Chen, Shengming Dai
A growing number of evidence has indicated that long non-coding RNAs (lncRNA) may have many functions in the development and progression of cancer, and cloud serve as good diagnostic and prognostic biomarkers in cancers. However, these studies often revealed the changes of lncRNAs within a specific cancer type. Here, we focused on BLACAT1 and provided a comprehensive pan-cancer analysis to evaluate the diagnostic and prognostic values of BLACAT1. The expression data of BLACAT1 were came from the quantitative real-time polymerase chain reaction (qRT-PCR) and The Cancer Genome Atlas (TCGA) database, respectively...
October 16, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29029605/monitoring-multiple-myeloma-by-idiotype-specific-peptide-binders-of-tumor-derived-exosomes
#19
Enrico Iaccino, Selena Mimmi, Vincenzo Dattilo, Fabiola Marino, Patrizio Candeloro, Antonio Di Loria, Danilo Marimpietri, Antonio Pisano, Francesco Albano, Eleonora Vecchio, Simona Ceglia, Gaetanina Golino, Antonio Lupia, Giuseppe Fiume, Ileana Quinto, Giuseppe Scala
Tumor-derived exosomes (TDEs) play a pivotal role in tumor establishment and progression, and are emerging biomarkers for tumor diagnosis in personalized medicine. To date, there is a lack of efficient technology platforms for exosome isolation and characterization. Multiple myeloma (MM) is an incurable B-cell malignancy due to the rapid development of drug-resistance. MM-released exosomes express the immunoglobulin B-cell receptor (Ig-BCR) of the tumor B-cells, which can be targeted by Idiotype-binding peptides (Id-peptides)...
October 13, 2017: Molecular Cancer
https://www.readbyqxmd.com/read/29025423/downregulation-of-nmi-promotes-tumor-growth-and-predicts-poor-prognosis-in-human-lung-adenocarcinomas
#20
Jingshu Wang, Kun Zou, Xu Feng, Miao Chen, Cong Li, Ranran Tang, Yang Xuan, Meihua Luo, Wangbing Chen, Huijuan Qiu, Ge Qin, Yixin Li, Changlin Zhang, Binyi Xiao, Lan Kang, Tiebang Kang, Wenlin Huang, Xinfa Yu, Xiaojun Wu, Wuguo Deng
BACKGROUND: N-myc (and STAT) interactor (NMI) plays vital roles in tumor growth, progression, and metastasis. In this study, we identified NMI as a potential tumor suppressor in lung cancer and explored its molecular mechanism involved in lung cancer progression. METHODS: Human lung cancer cell lines and a mouse xenograft model was used to study the effect of NMI on tumor growth. The expression of NMI, COX-2 and relevant signaling proteins were examined by Western blot...
October 12, 2017: Molecular Cancer
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