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https://www.readbyqxmd.com/read/29156860/decreased-oxidative-stress-may-contribute-to-the-disease-process-in-placenta-accreta
#1
Efser Öztaş, Sibel Özler, Merve Ergin, Özcan Erel, Başak Gümüş Güler, Ali Turhan Çağlar, Aykan Yücel, Dilek Uygur, Nuri Danışman
Background/aim: The main aim of this study was to investigate serum total oxidant status (TOS), total antioxidant status (TAS), oxidative stress index (OSI), and arylesterase levels in pregnant women with placenta accreta and to compare those with age-matched healthy pregnant women. Materials and methods: A total of 27 pregnant women who had clinically and pathologically proven placenta accreta and 30 age- and BMI- matched healthy pregnant women were enrolled in this case control study. Maternal serum TOS, TAS, OSI, and arylesterase levels were evaluated using logistic regression analysis to determine if there was an association with abnormal placental invasion or not...
August 23, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29156849/interest-of-integrins-targeting-in-glioblastoma-according-to-tumor-heterogeneity-and-cancer-stem-cell-paradigm-an-update
#2
REVIEW
Laure Malric, Sylvie Monferran, Julia Gilhodes, Sabrina Boyrie, Perrine Dahan, Nicolas Skuli, Julie Sesen, Thomas Filleron, Aline Kowalski-Chauvel, Elizabeth Cohen-Jonathan Moyal, Christine Toulas, Anthony Lemarié
Glioblastomas are malignant brain tumors with dismal prognosis despite standard treatment with surgery and radio/chemotherapy. These tumors are defined by an important cellular heterogeneity and notably contain a particular subpopulation of Glioblastoma-initiating cells, which recapitulate the heterogeneity of the original Glioblastoma. In order to classify these heterogeneous tumors, genomic profiling has also been undertaken to classify these heterogeneous tumors into several subtypes. Current research focuses on developing therapies, which could take into account this cellular and genomic heterogeneity...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156822/circular-rna-expression-profiles-reveal-that-hsa_circ_0018289-is-up-regulated-in-cervical-cancer-and-promotes-the-tumorigenesis
#3
Ya-Li Gao, Ming-Yun Zhang, Bo Xu, Li-Jie Han, Shou-Feng Lan, Ju Chen, Yu-Jin Dong, Li-Li Cao
Circular RNAs (circRNAs) are a type of non-coding RNAs that have been identified as critical regulators in various diseases, especially in cancers. However, the expression profiles and functions of circRNAs in cervical cancer are still unclear. In present study, human circRNAs microarray were performed to screen the circRNAs expression in cervical cancer tissue. Microarray analysis revealed 45 significantly expressed circRNAs with 4 fold change. Among these up-regulated circRNAs, hsa_circ_0018289 was validated to be significantly up-regulated in 35 pairs of cervical cancer tissue compared with adjacent normal tissue and cell lines...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156810/psc-derived-galectin-1-inducing-epithelial-mesenchymal-transition-of-pancreatic-ductal-adenocarcinoma-cells-by-activating-the-nf-%C3%AE%C2%BAb-pathway
#4
Dong Tang, Jingqiu Zhang, Zhongxu Yuan, Hongpeng Zhang, Yang Chong, Yuqin Huang, Jie Wang, Qingquan Xiong, Sen Wang, Qi Wu, Ying Tian, Yongdie Lu, Xiao Ge, Wenjing Shen, Daorong Wang
Galectin-1 has previously been shown to be strongly expressed in activated pancreatic stellate cells (PSCs) and promote the development and metastasis of pancreatic ductal adenocarcinoma (PDAC). However, the molecular mechanisms by which Galectin-1 promotes the malignant behavior of pancreatic cancer cells remain unclear. In this study, we examined the effects of Galectin-1 knockdown or overexpression in PSCs co-cultured with pancreatic cancer (PANC-1) cells. Immunohistochemical analysis showed expression of epithelial-mesenchymal transition (EMT) markers and MMP9 were positively associated with the expression of Galectin-1 in 66 human PDAC tissues...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156806/association-between-snps-in-microrna-machinery-genes-and-gastric-cancer-susceptibility-invasion-and-metastasis-in-chinese-han-population
#5
Xingbo Song, Huiyu Zhong, Qian Wu, Minjin Wang, Juan Zhou, Yi Zhou, Xiaojun Lu, Binwu Ying
Objective: The present study investigates the influence of genetic variants in miRNA machinery genes (DROSHA, DICER, AGO1, and GEMIN4) on gastric cancer in Chinese Han population, further revealing the genetic mechanisms of gastric cancer occurrence and development. Methods: Genotyping of single nucleotide polymorphisms (SNPs) was performed in 628 patients with GC and 502 frequency-matched (age and gender) controls by the high resolution melting (HRM) method. Results: The SNPs rs3742330 (DICER) and rs7813 (GEMIN4) were associated with susceptibility to gastric cancer (P = 0...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156792/liquid-biopsy-in-colon-cancer-comparison-of-different-circulating-dna-extraction-systems-following-absolute-quantification-of-kras-mutations-using-intplex-allele-specific-pcr
#6
Vera Kloten, Nadine Rüchel, Nadina Ortiz Brüchle, Janina Gasthaus, Nils Freudenmacher, Florian Steib, Jolein Mijnes, Julian Eschenbruch, Marcel Binnebösel, Ruth Knüchel, Edgar Dahl
Non-invasive molecular analysis of circulating tumor DNA (ctDNA) is a promising application in personalized cancer management, although there is still much to learn about the biological characteristics of ctDNA. The present study compared absolute amounts of KRAS mutated ctDNA and total circulating cell-free DNA (cfDNA) in colorectal cancer (CRC) patients (n=50) from various stages and healthy controls (n=8) by Intplex allele-specific and digital droplet PCR. In addition, the impact of two prominent extraction techniques (silica-based membrane vs...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156791/the-relationship-between-stromal-cell-derived-sparc-in-human-gastric-cancer-tissue-and-its-clinicopathologic-significance
#7
Yi Gao, Shui-Ping Yin, Xu-Shi Xie, Dan-Dan Xu, Wei-Dong Du
Background: We aimed to investigate the cellular source of secreted protein acidic and rich in cysteine (SPARC) in gastric cancer tissues and the relationship between SPARC expression and its prognostic significance. Methods: The expression of SPARC in 365 primary advanced gastric adenocarcinomas and 39 non-cancerous tissues was evaluated by immunohistochemical staining. Double-immunofluorescence staining was used to reveal the cellular source of SPARC in tumor tissues...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156782/trends-in-neoadjuvant-chemotherapy-use-and-oncological-outcomes-for-muscle-invasive-bladder-cancer-in-japan-a-multicenter-study
#8
Go Anan, Shingo Hatakeyama, Naoki Fujita, Hiromichi Iwamura, Toshikazu Tanaka, Hayato Yamamoto, Yuki Tobisawa, Tohru Yoneyama, Takahiro Yoneyama, Yasuhiro Hashimoto, Takuya Koie, Hiroyuki Ito, Kazuaki Yoshikawa, Toshiaki Kawaguchi, Makoto Sato, Chikara Ohyama
Objective: Despite benefits of neoadjuvant chemotherapy (NAC), the adoption of guideline recommendations for NAC use in patients with muscle-invasive bladder cancer (MIBC) has been slow. We aimed to evaluate temporal trends in NAC use and oncological outcomes in a representative cohort of patients with MIBC. Methods: We included 532 patients from 4 hospitals who underwent radical cystectomy (RC) for ≥ cT2 MIBC in 1996-2017. We retrospectively evaluated temporal changes in NAC use and progression-free and overall survival...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156781/toxoplasma-gondii-clp-family-protein-tgclpb1-plays-a-crucial-role-in-thermotolerance
#9
Shinuo Cao, Nali Du, Heming Chen, Yu Pang, Zhaoxia Zhang, Jun Zheng, Honglin Jia
Caseinolytic peptidase B (ClpB) plays a pivotal role in suppressing and reversing protein aggregation. Toxoplasma gondii is an intracellular parasitic protozoan that infects a wide variety of mammals and birds and therefore is exposed to a broad range of living condition. We screened ToxoDB (http://ToxoDB.org) and identified 10 putative T. gondii genes encoding members of the Clp superfamily of caseinolytic proteases and chaperones. Of these, we focused on characterizing the Class I ATP-dependent molecular chaperones TgClpB1, TgClpB2, and TgClpB3...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156778/worse-disease-free-tumor-specific-and-overall-survival-in-surgically-resected-lung-adenocarcinoma-patients-with-alk-rearrangement
#10
Qiongqiong Gao, Pupu Li, Xiangli Jiang, Zhongli Zhan, Qingna Yan, Bo Zhang, Chun Huang
Introduction: This study determined the prevalence of anaplastic lymphoma kinase (ALK) rearrangement, and identified the associations of ALK rearrangement with clinicopathologic characteristics and treatment outcomes in patients with surgically-resected stage I-III lung adenocarcinoma. Methods: A total of 534 surgically-resected lung adenocarcinoma patients were studied. The prevalence of ALK protein over-expression was determined by a fully-automated immunochemistry assay (with mouse monoclonal Ventana D5F3 antibody), and the associations of ALK rearrangement with clinicopathologic characteristics and treatment outcomes were analyzed...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156757/a-pten-col17a1-fusion-gene-and-its-novel-regulatory-role-in-collagen-xvii-expression-and-gbm-malignance
#11
Xiaoyan Yan, Chuanbao Zhang, Tingyu Liang, Fan Yang, Haoyuan Wang, Fan Wu, Wen Wang, Zheng Wang, Wen Cheng, Jiangnan Xu, Tao Jiang, Jing Chen, Yaozhong Ding
Collagen XVII expression has recently been demonstrated to be correlated with the tumor malignance. While Collagen XVII is known to be widely distributed in neurons of the human brain, its precise role in pathogenesis of glioblastoma multiforme (GBM) is unknown. In this study, we identified and characterized a new PTEN-COL17A1 fusion gene in GMB using transcriptome sequencing. Although fusion gene did not result in measurable fusion protein production, its presence is accompanied with high levels of COL17A1 expression, revealed a novel regulatory mechanism of Collagen XVII expression by PTEN-COL17A1 gene fusion...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156753/candidate-tumor-suppressor-znf154-suppresses-invasion-and-metastasis-in-npc-by-inhibiting-the-emt-via-wnt-%C3%AE-catenin-signalling
#12
Ying Hu, Min-Fang Qi, Qian-Lan Xu, Xiang-Yun Kong, Rui Cai, Qiu-Qiu Chen, Hua-Ying Tang, Wei Jiang
Background: Nasopharyngeal carcinoma (NPC) is especially prevalent in southeast Asia and southern China, but its molecular mechanisms remain poorly characterized. DNA methylation is associated with initiation and progression of tumors, including NPC. Through a genome-wide DNA methylation screening approach, we discovered ZNF154, but its methylation status and roles in NPC have not been investigated. Methods: The methylation status of ZNF154 in NPC was detected with Methylation specific-PCR (MSP) and Quantitative Sequenom MassARRAY...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156738/impact-of-mismatch-repair-deficiency-on-the-colorectal-cancer-immune-microenvironment
#13
Yingyi Zhang, Zhao Sun, Xinxin Mao, Huanwen Wu, Fei Luo, Xi Wu, Liangrui Zhou, Jing Qin, Lin Zhao, Chunmei Bai
Colorectal cancer patients respond inconsistently to immunotherapies, likely due to the immune microenvironments around their tumors. We analyzed the relationship between deficient mismatch repair (dMMR) and the colorectal cancer immune microenvironment to identify predictors of effective immunotherapy. Colorectal cancer patients (n=113) who had undergone surgical resection were divided into dMMR and proficient mismatch repair (pMMR) groups. The levels of immune checkpoint proteins, including programmed cell death 1 (PD-1), programmed cell death 1 ligand 1 (PD-L1), indoleamine 2,3 dioxygenase and CD8 were assessed immunohistochemically...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156735/telomerase-reverse-transcriptase-mediates-emt-through-nf-%C3%AE%C2%BAb-signaling-in-tongue-squamous-cell-carcinoma
#14
Yan Wu, Chunxiang Bian, Chunlin Zhen, Liu Liu, Zhenghong Lin, Muhammad Farrukh Nisar, Mei Wang, Jörg W Bartsch, Enyi Huang, Ping Ji, Li Yang, Yanhong Yu, Junfeng Yang, Xuemei Jiang, Julia Li Zhong
Locoregional lymph nodes metastasis in oral tongue squamous cell carcinoma represents one of important and common prognostic factors for poor clinical outcome. The human Telomerase Reverse Transcriptase (hTERT) is one of key players in cancer metastasis and stemness, but its exact function in tongue squamous cell carcinoma remains unknown. Here, we aim to understand the role of hTERT by utilizing the CRISPR/Cas9 gene editing system to deplete hTERT in the SCC-15 cell line. Functional comparison of SCC-15 control and knockout cells (hTERT(-/-)) showed that loss of hTERT suppressed cell proliferation and migration/invasion...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156726/adiponectin-receptor-agonists-inhibit-leptin-induced-pstat3-and-in-vivo-pancreatic-tumor-growth
#15
Fanuel Messaggio, Alisha M Mendonsa, Jason Castellanos, Nagaraj S Nagathihalli, Lee Gorden, Nipun B Merchant, Michael N VanSaun
Obesity is a significant risk factor for pancreatic cancer, harboring a chronic inflammatory condition characterized by dysregulation of the adipokines, leptin and adiponectin, that in turn alter oncogenic signaling pathways. We and others have shown that leptin promotes the proliferation and an invasive potential of pancreatic cancer cells through STAT3 mediated signaling. However, the role of adiponectin on the tumorigenicity of pancreatic cancer has not been elucidated. Adiponectin represents an important negative regulator of cytokines, which acts through two receptors, ADIPOR1 and ADIPOR2, to elicit pro-apoptotic, anti-inflammatory, and anti-angiogenic responses...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156724/lncrna-pvt1-and-its-splicing-variant-function-as-competing-endogenous-rna-to-regulate-clear-cell-renal-cell-carcinoma-progression
#16
Tao Yang, Hui Zhou, Peijun Liu, Libin Yan, Weimin Yao, Ke Chen, Jin Zeng, Heng Li, Junhui Hu, Hua Xu, Zhangqun Ye
Long non-coding RNAs (lncRNAs) exert critical regulatory roles in the development and progression of several cancers. Plasmacytoma variant translocation 1 (PVT1), an lncRNA, was shown to be upregulated in clear cell renal cell carcinoma (ccRCC) in our study, while Kaplan-Meier curve and Cox regression analysis showed that high expression of PVT1 was associated with poor overall survival (OS) and disease free survival (DFS) in ccRCC patients. In vitro experiments revealed that PVT1 promoted renal cancer cell proliferation, migration, and invasion, while in vivo studies confirmed its oncogenic roles in ccRCC...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156722/whole-exome-sequencing-reveals-novel-mutations-and-epigenetic-regulation-in-hypopharyngeal-carcinoma
#17
Ping Wu, Honglong Wu, Yaoyun Tang, Shi Luo, Xing Fang, Chubo Xie, Jian He, Suping Zhao, Xiaofeng Wang, Jiajia Xu, Xi Chen, Dongfang Li, Huanming Yang, Jian Wang
Hypopharyngeal cancer (HPC) frequently presents at an advanced stage, resulting in poor prognosis. Although combined surgical therapy and chemoradiotherapy have improved the survival for patients with HPC over the past 3 decades, the mortality rate in late-stage diagnosis of HPC is unsatisfactory. In this study, we performed whole-exome sequencing (WES) of 23 hypopharyngeal tumor and paired adjacent normal tissue to identify novel candidate driver genes associated with hypopharyngeal carcinoma. We identified several copy number variants (CNVs) and 15 somatic mutation genes that were associated with hypopharyngeal carcinoma...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156719/the-micrornas-mir-200b-3p-and-mir-429-5p-target-the-limk1-cfl1-pathway-to-inhibit-growth-and-motility-of-breast-cancer-cells
#18
Dengfeng Li, Hong Wang, Hongming Song, Hui Xu, Bingkun Zhao, Chenyang Wu, Jiashu Hu, Tianqi Wu, Dan Xie, Junyong Zhao, Qiang Shen, Lin Fang
Triple-negative breast cancer (TNBC) has the worst prognosis of all subtypes of breast cancer (BC), with limited options for conventional therapy and no targeted therapies. MicroRNAs (miRNAs) are small noncoding RNAs that negatively regulate gene expression. In this study, we aimed to determine whether two members of the miR-200 family, miR-200b-3p and miR-429-5p, are involved in BC cell proliferation and motility and to elucidate their target genes and pathways. We performed a meta-analysis that reveals down-regulated expression of miR-200b-3p and miR-429-5p in BC tissues and cell lines, consistent with a lower expression of miR-200b-3p and miR-429-5p in MDA-MB-231 and HCC1937 cells than in MCF-7 and MCF-10 cells...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156717/oligomer-procyanidins-f2-repress-hif-1%C3%AE-expression-in-human-u87-glioma-cells-by-inhibiting-the-egfr-akt-mtor-and-mapk-erk1-2-signaling-pathways-in-vitro-and-in-vivo
#19
Hong-Li Zheng, Li-Hui Wang, Bao-Shan Sun, Yi Li, Jing-Yu Yang, Chun-Fu Wu
Hypoxia-inducible factor-1 (HIF-1) is over-expressed in gliomas and has become one of the most compelling tumor targets. In this study, we found that oligomer procyanidins (F2) can suppress the expressions of HIF-1α and its target genes in U87 cells, and also down-regulate the EGFR/PI3K/AKT/mTOR and MAPK/ERK1/2 pathways in vitro and in vivo. Furthermore, hypoxia-induced formation of tubular structures by human umbilical vascular endothelial cells and the migration and invasion of U87 cells could be inhibited by F2 in a HIF-1 dependent manner...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156716/using-droplet-digital-pcr-to-analyze-mycn-and-alk-copy-number-in-plasma-from-patients-with-neuroblastoma
#20
Marco Lodrini, Annika Sprüssel, Kathy Astrahantseff, Daniela Tiburtius, Robert Konschak, Holger N Lode, Matthias Fischer, Ulrich Keilholz, Angelika Eggert, Hedwig E Deubzer
The invasive nature of surgical biopsies deters sequential application, and single biopsies often fail to reflect tumor dynamics, intratumor heterogeneity and drug sensitivities likely to change during tumor evolution and treatment. Implementing molecular characterization of cell-free neuroblastoma-derived DNA isolated from blood plasma could improve disease assessment for treatment selection and monitoring of patients with high-risk neuroblastoma. We established droplet digital PCR (ddPCR) protocols for MYCN and ALK copy number status in plasma from neuroblastoma patients...
October 17, 2017: Oncotarget
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