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Cancer Letters

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https://www.readbyqxmd.com/read/29458145/the-c-ebp%C3%AE-linc01133-axis-promotes-cell-proliferation-in-pancreatic-ductal-adenocarcinoma-through-upregulation-of-ccng1
#1
Chen-Song Huang, Junjun Chu, Xiao-Xu Zhu, Jian-Hui Li, Xi-Tai Huang, Jian-Peng Cai, Wei Zhao, Xiao-Yu Yin
Long non-coding RNAs (lncRNAs) are emerging as important regulators and prognostic markers of multiple cancers. Our aim was to determine functional involvement of lncRNAs in pancreatic ductal adenocarcinoma (PDAC). In this study, we report that LINC01133 expression is higher in PDAC tissues compared to adjacent non-cancerous tissues, and this overexpression is associated with poorer prognosis among the patients. In vitro, a knockdown of LINC01133 substantially decreased PDAC cell proliferation. Tumorigenicity of PDAC cells with the LINC01133 knockdown was significantly impaired in a xenograft model assay...
February 16, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29458144/disruption-of-peroxisome-function-leads-to-metabolic-stress-mtor-inhibition-and-lethality-in-liver-cancer-cells
#2
Mengjiao Cai, Xiao Sun, Wenchao Wang, Zhusheng Lian, Ping Wu, Suxia Han, Huan Chen, Pumin Zhang
Peroxisome houses a large number of enzymes involved in lipid and phytochemical oxidation as well as synthesis of bile acid and other specialized lipids. Peroxisome resident enzymes are imported into the organelle via a conserved cargo transport system composed of many peroxins, protein factors essential for the biogenesis of peroxisome. Among the peroxins, PEX5 plays a transporter role, and PEX2, 10, and 12 are thought to form a complex that functions as an E3 ubiquitin ligase to help recycle PEX5 in an ubiquitin modification-dependent process...
February 16, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29458143/suv39h2-promotes-colorectal-cancer-proliferation-and-metastasis-via-tri-methylation-of-the-slit1-promoter
#3
Wendi Shuai, Jiangxue Wu, Shuai Chen, Ranyi Liu, Zhihua Ye, Chunmei Kuang, Xiang Fu, Gaoyuan Wang, Yingchang Li, Qihua Peng, Wei Shi, Yizhuo Li, Qianghua Zhou, Wenlin Huang
Suppressor of variegation 3-9 homolog 2 (SUV39H2) is a member of the SUV39H subfamily of lysine methyltransferases. Its role in colorectal cancer (CRC) proliferation and metastasis has remained unexplored. Here, we determined that SUV39H2 was upregulated in CRC tissues compared with that in adjacent non-neoplastic tissues. Further statistical analysis revealed that high SUV39H2 expression was strongly associated with distant metastasis (P = 0.016) and TNM stage (P = 0.038) and predicted a shorter overall survival (OS; P = 0...
February 16, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29458142/insufficient-radiofrequency-ablation-promotes-proliferation-of-residual-hepatocellular-carcinoma-via-autophagy
#4
Zizhuo Zhao, Jiayi Wu, Xiaodi Liu, Ming Liang, Xinchuan Zhou, Shi Ouyang, Jiyi Yao, Jinquan Wang, Baoming Luo
Radiofrequency ablation (RFA) is considered to be a potentially curative therapy for hepatocellular carcinoma (HCC). However, insufficient RFA (IRFA) can promote rapid progression of the residual tumor. The mechanisms underlying IRFA-induced tumor promotion remain poorly understood. In the present study, we have established a subcutaneous xenograft mouse model and monitored the location and extent of IRFA by dual monitoring with ultrasonography and a thermal imager. For the first time, we provide evidence of the activation of autophagic pathways in mice exposed to IRFA...
February 16, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29458141/long-non-coding-rnas-within-the-tumour-microenvironment-and-their-role-in-tumour-stroma-cross-talk
#5
Filippo Del Vecchio, Gui Han Lee, Joamir Hawezi, Rahul Bhome, Sian Pugh, Emre Sayan, Gareth Thomas, Graham Packham, John Primrose, Martin Pichler, Alexander Mirnezami, George Calin, Marc Bullock
Long non-coding RNAs (lncRNAs) are a diverse class of RNA transcripts which have limited protein coding potential. They perform a variety of cellular functions in health, but have also been implicated during malignant transformation. A further theme in recent years is the critical role of the tumour microenvironment and the dynamic interactions between cancer and stromal cells in promoting invasion and disease progression. Whereas the contribution of deregulated lncRNAs within cancer cells has received considerable attention, their significance within the tumour microenvironment is less well understood...
February 16, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29454095/an-esophageal-adenocarcinoma-susceptibility-locus-at-9q22-also-confers-risk-to-esophageal-squamous-cell-carcinoma-by-regulating-the-function-of-barx1
#6
Caiwang Yan, Yong Ji, Tongtong Huang, Fei Yu, Yong Gao, Yayun Gu, Qi Qi, Jiangbo Du, Juncheng Dai, Hongxia Ma, Guangfu Jin
Genome wide association studies (GWAS) have identified a series of genetic variants associated with the risk of esophageal adenocarcinoma (EAC)/Barrett's esophagus (BE), which was different from those loci for esophageal squamous cell carcinoma (ESCC). It is important to evaluate whether these susceptibility loci for EAC/BE are also implicated in ESCC development. In the current study, we analyzed genetic variants at 3p13, 9q22, 16q24 and 19p13 in a case-control study including 2139 ESCC patients and 2463 cancer-free controls in a Chinese population, and further characterized the biological relevance of genetic variants by functional assays...
February 14, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29454094/synergistic-activity-of-bet-inhibitor-bi-894999-with-plk-inhibitor-volasertib-in-aml-in-vitro-and-in-vivo
#7
Ulrike Tontsch-Grunt, Dorothea Rudolph, Irene Waizenegger, Anke Baum, Daniel Gerlach, Harald Engelhardt, Melanie Wurm, Fabio Savarese, Norbert Schweifer, Norbert Kraut
Interactions between a new potent Bromodomain and extraterminal domain (BET) inhibitor BI 894999 and the polo-like kinase (PLK) inhibitor volasertib were studied in acute myeloid leukemia cell lines in vitro and in vivo. We provide data for the distinct mechanisms of action of these two compounds with a potential utility in AML based on gene expression, cell cycle profile and modulation of PD biomarkers such as MYC and HEXIM1. In contrast to BI 894999, volasertib treatment neither affects MYC nor HEXIM1 expression, but augments and prolongs the decrease of MYC expression caused by BI 894999 treatment...
February 14, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29454093/silencing-circular-rna-hsa_circ_0000977-suppresses-pancreatic-ductal-adenocarcinoma-progression-by-stimulating-mir-874-3p-and-inhibiting-plk1-expression
#8
Wen-Jie Huang, Yun-Chao Wang, Song-Song Liu, Jia-Li Yang, Shi-Xiang Guo, Li-Jiang Wang, Huai-Zhi Wang, Ying-Fang Fan
Circular RNAs (CircRNAs) are a novel type of endogenous noncoding RNAs that regulate target gene expression by interacting with microRNA (miRNA). Emerging evidence shows that dysregulation of circRNAs plays important roles in biological and pathological processes, including cancer development and progression. The functional role of circRNA in PDAC (pancreatic ductal adenocarcinoma) remains to be investigated. In this study, high throughput microarray assay revealed that hsa_circ_0000977 was aberrantly up-regulated in pancreatic cancer tissues; this was also validated by qRT-PCR...
February 14, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29452147/combination-of-kras-activation-and-pten-deletion-contributes-to-murine-hepatopancreatic-ductal-malignancy
#9
Yun-Kai Lin, Zheng Fang, Tian-Yi Jiang, Zheng-Hua Wan, Yu-Fei Pan, Yun-Han Ma, Yuan-Yuan Shi, Ye-Xiong Tan, Li-Wei Dong, Yong-Jie Zhang, Hong-Yang Wang
Kras mutations are among the most common genetic abnormalities in human neoplasms, including cholangiocarcinomas, pancreatic cancer and colon cancer. PTEN has previously been associated with cholangiocarcinoma development in murine models. Here, we have established novel mouse models of neoplasms by liver-specific and biliary-pancreatic Kras activation and PTEN deletion. By liver-specific disruption of PTEN and activation of Kras in mice caused rapid development of intrahepatic biliary epithelial proliferative lesions (Intrahepatic cholangiocarcinoma, ICC), which progress through dysplasia to invasive carcinoma...
February 13, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29452146/the-hippo-yap1-pathway-interacts-with-fgfr1-signaling-to-maintain-stemness-in-lung-cancer
#10
Tingting Lu, Ziming Li, Ying Yang, Wenxiang Ji, Yongfeng Yu, Xiaomin Niu, Qingyu Zeng, Weiliang Xia, Shun Lu
The Hippo pathway plays a critical role in organ size control, tissue homeostasis and tumor genesis through its key transcription regulator Yes-associated protein1 (YAP1), but the mechanism underlying its role in lung cancer is unclear. We hypothesized that YAP1 influences FGFR1 signaling to maintain cancer stem-like cell (CSC) properties in FGFR1-amplified lung cancer. In support of this, our data confirms that expression levels of YAP1 are positively associated with those of FGFR1 in clinical lung carcinoma samples as measured by real-time PCR, western blot, and immunohistochemistry (IHC) staining...
February 13, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29452145/rna-biology-featuring-the-special-issue-guest-editors-cancer-letters
#11
EDITORIAL
Girish C Shukla, Sanjay Gupta
No abstract text is available yet for this article.
February 13, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29452144/recent-progress-in-immune-metabolism
#12
EDITORIAL
Shuai Jiang
No abstract text is available yet for this article.
February 13, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29448000/bone-marrow-derived-fibrocytes-promote-stem-cell-like-properties-of-lung-cancer-cells
#13
Atsuro Saijo, Hisatsugu Goto, Mayuri Nakano, Atsushi Mitsuhashi, Yoshinori Aono, Masaki Hanibuchi, Hirohisa Ogawa, Hisanori Uehara, Kazuya Kondo, Yasuhiko Nishioka
Cancer stem cells (CSCs) represent a minor population that have clonal tumor initiation and self-renewal capacity and are responsible for tumor initiation, metastasis, and therapeutic resistance. CSCs reside in niches, which are composed of diverse types of stromal cells and extracellular matrix components. These stromal cells regulate CSC-like properties by providing secreted factors or by physical contact. Fibrocytes are differentiated from bone marrow-derived CD14 + monocytes and have features of both macrophages and fibroblasts...
February 12, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29432847/ascitic-fluid-from-advanced-ovarian-cancer-patients-compromises-the-activity-of-receptor-tyrosine-kinase-inhibitors-in-3d-cell-clusters-of-ovarian-cancer-cells
#14
Wafaa Hassan, Kenny Chitcholtan, Peter Sykes, Ashley Garrill
Ovarian cancer patients in the advanced stages of the disease show clinical ascites, which is associated with a poor prognosis. There is limited understanding of the effect of ascitic fluid on ovarian cancer cells and their response to anticancer drugs. We investigated the antitumour effects of EGFR/Her-2 (canertinib) and c-Met (PHA665752) inhibitors in a 3D cell model of three ovarian cancer lines. Single and combined inhibitor treatments affected cell growth of OVCAR-5 and SKOV-3 cell lines but not OV-90 cell line...
February 9, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29432846/nf-%C3%AE%C2%BAb-in-pancreatic-cancer-its-key-role-in-chemoresistance
#15
Quanxiao Li, Gang Yang, Mengyu Feng, Suli Zheng, Zhe Cao, Jiangdong Qiu, Lei You, Lianfang Zheng, Ya Hu, Taiping Zhang, Yupei Zhao
Pancreatic cancer is considered a lethal disease with a high mortality and an extremely low five-year survival rate. Chemotherapy plays a pivotal role in pancreatic cancer treatment both in an adjuvant setting after complete resection and in the case of unresectable metastatic disease. However, none of the available combination chemotherapy regimens has resulted in satisfactory survival outcomes. Recent studies have revealed that both constitutive and induced activation of nuclear factor kappa B (NF-κB) in pancreatic cancer cells are closely associated with cell proliferation, invasion, anti-apoptosis, inflammation, angiogenesis and chemotherapeutic resistance...
February 9, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29432845/adam9-mediates-the-interleukin-6-induced-epithelial-mesenchymal-transition-and-metastasis-through-ros-production-in-hepatoma-cells
#16
Yinying Dong, Zhifeng Wu, Mingyan He, Yuhan Chen, Yixing Chen, Xiaoyun Shen, Xiaomei Zhao, Li Zhang, Baoying Yuan, Zhaochong Zeng
Interleukin (IL)-6 has been implicated in the invasion and metastasis of hepatocellular carcinoma (HCC). However, the molecular events that mediate this process are poorly understood. Here, we showed that IL-6 promoted the epithelial-mesenchymal transition (EMT) in HCC cell lines, and upregulated a disintegrin and metalloprotease 9 (ADAM9) expression by activating the JNK signaling pathway. ADAM9 was upregulated in human HCCs which promoted HCC cell invasion and the EMT by interacting with NADPH oxidase 1 and inducing reactive oxygen species generation...
February 9, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29432844/pharmacogenomics-signature-a-novel-strategy-on-the-individual-differences-in-drug-response
#17
Chengxian Guo, Xinjian Lin, Jiye Yin, Xiaoxue Xie, Jingao Li, Xiangguang Meng, Jichu Wu, Lihua Huang, Zhijun Huang, Guoping Yang, Honghao Zhou, Xiang Chen
Patients exhibit a wide heterogeneity in their responses to a drug treatment due to variations in the molecular determinants underlying this heterogeneity. Pharmacogenomics approaches can be used to integrate information on drug responsiveness with alterations in molecular entities, often on a genome-wide scale. However, most of the studies involving pharmacogenomics of specific therapeutics are in their early stages and thus are not ready for clinical utilization. Genotyping studies tackle around a candidate gene approach using genes known to be important in the pharmacokinetics and pharmacodynamics of the administered drugs...
February 9, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29429755/corrigendum-to-mir-590-5p-a-density-sensitive-microrna-inhibits-tumorigenesis-by-targeting-yap1-in-colorectal-cancer-canc-lett-399-2017-53-63
#18
Chunlin Ou, Zhenqiang Sun, Xiayu Li, Xiaoling Li, Weiguo Ren, Zailong Qin, Xuemei Zhang, Weitang Yuan, Jia Wang, Wentao Yu, Shiwen Zhang, Qiu Peng, Qun Yan, Wei Xiong, Guiyuan Li, Jian Ma
No abstract text is available yet for this article.
February 8, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29428642/dual-inhibition-of-mtorc1-2-by-dcz0358-induces-cytotoxicity-in-multiple-myeloma-and-overcomes-the-protective-effect-of-the-bone-marrow-microenvironment
#19
Lu Gao, Bo Li, Guang Yang, Peng Liu, Xiucai Lan, Shuaikang Chang, Yi Tao, Zhijian Xu, Bingqian Xie, Xi Sun, Yingcong Wang, Liangning Hu, Dandan Yu, Yongsheng Xie, Wenxuan Bu, Xiaosong Wu, Weiliang Zhu, Jumei Shi
Interaction of multiple myeloma (MM) cells with the bone marrow (BM) microenvironment promotes the proliferation, survival and chemoresistance of MM. The mTOR pathway plays a key role in these undesirable BM microenvironment-mediated events. We synthesized a novel alkaloid compound, DCZ0358, that effectively inhibits mTOR signaling via dual mTORC1/2 inhibition and exhibits potent anti-MM activity in cultured and primary MM cells, as well as a MM xenograft model but has little effect on normal cells. Importantly, we show that this compound can block the BM stromal cell-mediated activation of mTOR/Akt signaling and antagonizes the protective effect of the BM microenvironment...
February 8, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29410248/tfcp2-tfcp2l1-ubp1-transcription-factors-in-cancer
#20
Grzegorz Kotarba, Ewa Krzywinska, Anna I Grabowska, Agnieszka Taracha, Tomasz Wilanowski
The TFCP2/Grainyhead family of transcription factors is divided into two distinct subfamilies, one of which includes the Grainyhead-like 1-3 (GRHL1-3) proteins and the other consists of TFCP2 (synonyms: CP2, LSF, LBP-1c), TFCP2L1 (synonyms: CRTR-1, LBP-9) and UBP1 (synonyms: LBP-1a, NF2d9). Transcription factors from the TFCP2/TFCP2L1/UBP1 subfamily are involved in various aspects of cancer development. TFCP2 is a pro-oncogenic factor in hepatocellular carcinoma, pancreatic cancer and breast cancer, may be important in cervical carcinogenesis and in colorectal cancer...
February 7, 2018: Cancer Letters
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