Read by QxMD icon Read

Methylation tumor

Cheuk-Ting Law, Lai Wei, Felice Ho-Ching Tsang, Cerise Yuen-Ki Chan, Iris Ming-Jing Xu, Robin Kit-Ho Lai, Daniel Wai-Hung Ho, Joyce Man-Fong Lee, Carmen Chak-Lui Wong, Irene Oi-Lin Ng, Chun-Ming Wong
Hepatocellular carcinoma (HCC) is the third lethal cancer worldwide. Increasing evidence showed that epigenetic alterations play an important role in human carcinogenesis. Deregulation of DNA methylation and histone modifications have recently been characterized in HCC, but the significance of chromatin remodeling in liver carcinogenesis remains to be explored. In this study, by systematically analyzing the expression of chromatin remodeling genes in human HCCs, we found that HELicase, Lymphoid-Specific (HELLS), a SWI2/SNF2 chromatin remodeling enzyme, was remarkably overexpressed in HCC...
December 5, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
Stefano Indraccolo, Giuseppe Lombardi, Matteo Fassan, Lorenza Pasqualini, Silvia Giunco, Raffaella Marcato, Alessandra Gasparini, Cinzia Candiotto, Silvia Nalio, Pasquale Fiduccia, Giuseppe Nicolò Fanelli, Ardi Pambuku, Alessandro Della Puppa, Domenico D'Avella, Laura Bonaldi, Marina P Gardiman, Roberta Bertorelle, Anita De Rossi, Vittorina Zagonel
PURPOSE: In-depth characterization of recurrent glioblastoma (rGBM) might contribute to a better understanding of the mechanisms behind tumor progression and enable rGBM treatment with targeted drugs. EXPERIMENTAL DESIGN: In this study, GBM samples were collected at diagnosis and recurrence from adult patients treated with Stupp protocol. Expression of mismatch repair (MMR) proteins was evaluated by IHC, followed by whole exome sequencing (WES) of tumor samples showing loss of MSH6 reactivity...
December 4, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
Kohei Fukuoka, Yonehiro Kanemura, Tomoko Shofuda, Shintaro Fukushima, Satoshi Yamashita, Daichi Narushima, Mamoru Kato, Mai Honda-Kitahara, Hitoshi Ichikawa, Takashi Kohno, Atsushi Sasaki, Junko Hirato, Takanori Hirose, Takashi Komori, Kaishi Satomi, Akihiko Yoshida, Kai Yamasaki, Yoshiko Nakano, Ai Takada, Taishi Nakamura, Hirokazu Takami, Yuko Matsushita, Tomonari Suzuki, Hideo Nakamura, Keishi Makino, Yukihiko Sonoda, Ryuta Saito, Teiji Tominaga, Yasuhiro Matsusaka, Keiichi Kobayashi, Motoo Nagane, Takuya Furuta, Mitsutoshi Nakada, Yoshitaka Narita, Yuichi Hirose, Shigeo Ohba, Akira Wada, Katsuyoshi Shimizu, Kazuhiko Kurozumi, Isao Date, Junya Fukai, Yousuke Miyairi, Naoki Kagawa, Atsufumi Kawamura, Makiko Yoshida, Namiko Nishida, Takafumi Wataya, Masayoshi Yamaoka, Naohiro Tsuyuguchi, Takehiro Uda, Mayu Takahashi, Yoshiteru Nakano, Takuya Akai, Shuichi Izumoto, Masahiro Nonaka, Kazuhisa Yoshifuji, Yoshinori Kodama, Masayuki Mano, Tatsuya Ozawa, Vijay Ramaswamy, Michael D Taylor, Toshikazu Ushijima, Soichiro Shibui, Mami Yamasaki, Hajime Arai, Hiroaki Sakamoto, Ryo Nishikawa, Koichi Ichimura
Extensive molecular analyses of ependymal tumors have revealed that supratentorial and posterior fossa ependymomas have distinct molecular profiles and are likely to be different diseases. The presence of C11orf95-RELA fusion genes in a subset of supratentorial ependymomas (ST-EPN) indicated the existence of molecular subgroups. However, the pathogenesis of RELA fusion-negative ependymomas remains elusive. To investigate the molecular pathogenesis of these tumors and validate the molecular classification of ependymal tumors, we conducted thorough molecular analyses of 113 locally diagnosed ependymal tumors from 107 patients in the Japan Pediatric Molecular Neuro-Oncology Group...
December 4, 2018: Acta Neuropathologica Communications
Ya-Ping Ye, Hong-Li Jiao, Shu-Yang Wang, Zhi-Yuan Xiao, Dan Zhang, Jun-Feng Qiu, Ling-Jie Zhang, Ya-Li Zhao, Ting-Ting Li, Li-Liang, Wen-Ting Liao, Yan-Qing Ding
BACKGROUND: Colorectal cancer (CRC) is one of the most common digestive malignant tumors, and DMTN is a transcriptionally differentially expressed gene that was identified using CRC mRNA sequencing data from The Cancer Genome Atlas (TCGA). Our preliminary work suggested that the expression of DMTN was downregulated in CRC, and the Rac1 signaling pathway was significantly enriched in CRC tissues with low DMTN expression. However, the specific functions and underlying molecular mechanisms of DMTN in the progression of CRC and the upstream factors regulating the downregulation of the gene remain unclear...
December 4, 2018: Journal of Experimental & Clinical Cancer Research: CR
Yi-Fang Lu, Jia-Rui Yu, Zhao Yang, Guan-Xia Zhu, Peng Gao, Huan Wang, Si-Yuan Chen, Jie Zhang, Mei-Yue Liu, Yi Niu, Xiao-Mei Wei, Wei Wang, Feng-Jin Ye, Li-Xin Zhang, Yue Zhao, Guo-Gui Sun
BACKGROUND: Esophageal cancer is a high incident cancer worldwide with poor survival and limited therapeutic options. Alterations of microRNAs are common in cancers, and many of these micro RNAs are potential therapeutic and diagnostic targets to treat these cancers. miR-10b-3p located in chromosome region 2q31.1, and its expression is frequently increased in esophageal squamous cell carcinoma (ESCC). However, the biological functions, clinical significance and therapeutic implications of miR-10b-3p in ESCC remain unclear...
December 4, 2018: Journal of Experimental & Clinical Cancer Research: CR
Yu-Chao Lin, Jui-Hsin Su, Shih-Chao Lin, Chia-Che Chang, Te-Chun Hsia, Yu-Tang Tung, Chi-Chien Lin
11-Dehydrosinulariolide, an active compound that is isolated from the cultured soft coral Sinularia flexibilis , has been suggested to show anti-tumor biological characteristics according to previous studies. However, its potential effect on small cell lung cancer (SCLC) remains unknown. The present study investigates the underlying mechanism for the treatment of SCLC in vitro and in vivo. Cell viability was examined using the methyl-thiazol-diphenyl-tetrazolium (MTT) assay. Flow cytometry was applied to evaluate cell cycle distribution and apoptosis...
November 30, 2018: Marine Drugs
Roee Birnbaum, Naama Yosha-Orpaz, Miri Yanoov-Sharav, Dvora Kidron, Hila Gur, Keren Yosovich, Tally Lerman-Sagie, Gustavo Malinger, Dorit Lev
Protein arginine methyltransferase 7 (PRMT7) is a member of a family of enzymes that catalyze the transfer of methyl groups from S-adenosyl-l-methionine to nitrogen atoms on arginine residues. Arginine methylation is involved in multiple biological processes, such as signal transduction, mRNA splicing, transcriptional control, DNA repair, and protein translocation. Currently, 10 patients have been described with mutations in PRMT7. The shared findings include: hypotonia, intellectual disability, short stature, brachydactyly, and mild dysmorphic features...
December 4, 2018: American Journal of Medical Genetics. Part A
Bostjan Matos, Emanuela Bostjancic, Alenka Matjasic, Mara Popovic, Damjan Glavac
Background Glioblastoma (GBM) is the most common and the most malignant glioma subtype. Among numerous genetic alterations, miRNAs contribute to pathogenesis of GBM and it is suggested that also to GBM recurrence and resistance to therapy. Based on publications, we have selected 11 miRNAs and analyzed their expression in GBM. We hypothesized that selected miRNAs are differentially expressed and involved in primary as well as in recurrent GBM, that show significant expressional differences when different treatment options are in question, and that are related to certain patients and tumor characteristics...
November 26, 2018: Radiology and Oncology
Chihua Wu, Youlin Tuo
AIM: To explore the prognostic value of synaptonemal complex protein-2 (SYCP2) in different subtypes of breast cancer. Patients & materials: In silico bioinformatic analysis was conducted using large databases. RESULTS: SYCP2 was only significantly upregulated in luminal B tumors compared with the adjacent normal tissues. SYCP2 expression was an independent indicator of shorter overall survival in luminal A patients (hazard ratio: 2.269; 95% CI: 1.059-4.862; p = 0...
December 4, 2018: Future Oncology
Javad Charostad, Akram Astani, Hossein Goudarzi, Ebrahim Faghihloo
Human tumor viruses are either casually linked or contribute in the development of human cancers. Viruses can stimulate oncogenesis through affecting diverse biological pathways in human cells. Growing data have demonstrated frequent involvement of one of the most characteristic parts of cellular epigenetic machinery, DNA methylation, in the oncogenesis. DNA methylation of cellular genes is catalyzed by DNA methyltransferases (DNMTs) as a key effector enzyme in this process. Dysregulation of DNMTs can cause aberrant gene methylation in promoter of cancer-related genes including tumor suppressor genes, resulting in gene silencing...
December 3, 2018: Reviews in Medical Virology
Abdolamir Allameh, Abdolkarim Moazeni-Roodi, Iraj Harirchi, Mehrdad Ravanshad, Maziar Motiee-Langroudi, Ata Garajei, Azin Hamidavi, Seyed Alireza Mesbah-Namin
The aim of this study was to investigate the relationship between p16 methylation and its expression in oral squamous cell carcinoma (OSCC). Also the contribution of clinicopathological factors, HPV infection and smoking in p16 expression and promoter methylation has been investigated. In this study 67 consecutive OSCC patients and 59 normal individuals were enrolled. All patients were candidates for surgery of oral cavity and fresh tumor biopsies were collected and processed for DNA and RNA extraction. Normal gingival tissues were collected from individuals referred to dentistry clinic and considered as controls...
December 3, 2018: Pathology Oncology Research: POR
Marco Papale, Elisabetta Ferretti, Giuseppe Battaglia, Diana Bellavia, Antonello Mai, Marco Tafani
During the past decades, several discoveries have established the role of epigenetic modifications and cellular microenvironment in tumor growth and progression. One of the main representatives concerning epigenetic modification is the polycomb group (PcG). It is composed of different highly conserved epigenetic effector proteins preserving, through several post-translational modifications of histones, the silenced state of the genes implicated in a wide range of central biological events such as development, stem cell formation, and tumor progression...
2018: Frontiers in Pediatrics
Yuan He, Li-Yue Sun, Jing Wang, Rui Gong, Qiong Shao, Zi-Chen Zhang, Zu-Lu Ye, Hai-Yun Wang, Rui-Hua Xu, Jian-Yong Shao
Objective: To investigate methylation of the adenomatosis polyposis coli homologue (APC2) promoter and its correlation with prognostic implications in Chinese colorectal cancer (CRC). Methods: The mRNA expression of APC2 in colorectal tissues was evaluated using the database of The Cancer Genome Atlas (TCGA). Methylation analysis of APC2 in tumor ( n = 66) and corresponding adjacent formalin-fixed and paraffin-embedded (FFPE) tissues ( n = 44) was performed by Sequenom EpiTYPER® and verified by cloning-based bisulfite sequencing analysis...
2018: Disease Markers
Dao-Jiang Li, Zhi-Cai Feng, Xiao-Rong Li, Gui Hu
AIM: To investigate whether promoter methylation is responsible for the silencing of formin 2 ( FMN2 ) in colorectal cancer (CRC) and to analyze the association between FMN2 methylation and CRC. METHODS: We first identified the expression levels and methylation levels of FMN2 in large-scale human CRC expression datasets, including GEO and TCGA, and analyzed the relationship between the expression and methylation levels. Then, the methylation levels in four CpG regions adjacent to the FMN2 promoter were assessed by MethylTarget™ assays in CRC cells and in paired colorectal tumor samples and adjacent nontumor tissue samples...
November 28, 2018: World Journal of Gastroenterology: WJG
Hee-Jin Kim, Tae-Wook Kang, Keeok Haam, Mirang Kim, Seon-Kyu Kim, Seon-Young Kim, Sang-Il Lee, Kyu-Sang Song, Hyun-Yong Jeong, Yong Sung Kim
DNA methylation is a regulatory mechanism in epigenetics that is frequently altered during human carcinogenesis. To detect critical methylation events associated with gastric cancer (GC), we compared three DNA methylomes from gastric mucosa (GM), intestinal metaplasia (IM), and gastric tumor (GT) cells that were microscopically dissected from an intestinal-type early gastric cancer (EGC) using methylated DNA binding domain sequencing (MBD-seq) and reduced representation bisulfite sequencing (RRBS) analysis...
December 3, 2018: Experimental & Molecular Medicine
Hidenori Hidaka, Ken Higashimoto, Saori Aoki, Hiroyuki Mishima, Chisa Hayashida, Toshiyuki Maeda, Yasuo Koga, Hitomi Yatsuki, Keiichiro Joh, Hirokazu Noshiro, Ryuichi Iwakiri, Atsushi Kawaguchi, Koh-Ichiro Yoshiura, Kazuma Fujimoto, Hidenobu Soejima
BACKGROUND: Imprinted genes are regulated by DNA methylation at imprinting-associated differentially methylated regions (iDMRs). Abnormal expression of imprinted genes is implicated in imprinting disorders and tumors. In colorectal cancer (CRC), methylation and imprinting status of the IGF2/H19 domain have been studied. However, no comprehensive methylation analysis of iDMRs in CRC has been reported. Furthermore, the relationship between iDMR methylation status and other methylation-related issues, such as CpG island methylator phenotype (CIMP) and long interspersed element-1 (LINE-1) methylation, remains unclear...
December 4, 2018: Clinical Epigenetics
Marcella La Noce, Francesca Paino, Luigi Mele, Gianpaolo Papaccio, Tarik Regad, Angela Lombardi, Federica Papaccio, Vincenzo Desiderio, Virginia Tirino
BACKGROUND: Cancer stem cells (CSCs) play a key role in cancer initiation, progression and chemoresistance. Epigenetic alterations have been identified as prominent factors that contribute to the CSCs phenotype. Here, we investigated the effects of the HDAC inhibitor valproic acid (VPA) and the demethylating agent, 5'azacytidine (DAC) on the stem phenotype of MG63 and Saos2 osteosarcoma cell lines. METHODS: Saos2 and MG63 cells were treated with DAC and VPA, alone and in combination...
December 3, 2018: Journal of Experimental & Clinical Cancer Research: CR
Keisuke Okuno, Yoshimitsu Akiyama, Shu Shimada, Masatoshi Nakagawa, Toshiro Tanioka, Mikito Inokuchi, Shoji Yamaoka, Kazuyuki Kojima, Shinji Tanaka
Histone modification plays important molecular roles in development and progression of cancers. Dysregulation of histone H3 arginine (R) methylation is still unknown in primary cancer, including gastric cancer (GC). Although PRMT6 contributes to asymmetric dimethylation at H3R2 (H3R2me2as) in cancer cells, its molecular functions are poorly understood in GC. In this study, we assessed H3R2me2as and PRMT6 expression levels in 133 primary GC tissues by immunohistochemistry. Increased H3R2me2as was found in 68 GC (51...
December 3, 2018: Carcinogenesis
S A Toms, C Y Kim, G Nicholas, Z Ram
BACKGROUND: Tumor treating fields (TTFields) is a non-invasive, antimitotic therapy. In the EF-14 phase 3 trial in newly diagnosed glioblastoma, TTFields plus temozolomide (TTFields/TMZ) improved progression free (PFS) and overall survival (OS) versus TMZ alone. Previous data indicate a ≥ 75% daily compliance improves outcomes. We analyzed compliance data from TTFields/TMZ patients in the EF-14 study to correlate TTFields compliance with PFS and OS and identify potential lower boundary for compliance with improved clinical outcomes...
December 1, 2018: Journal of Neuro-oncology
M El Bordiny, A Al-Ghandour, R A Abo Elwafa, O Fayed
BACKGROUND: Wilms tumor 1 (WT1) gene is overexpressed in numerous cancers, including acute myeloid leukemia (AML). The alternative WT1 gene (AWT1) is generated from alternative transcription start site in the WT1 first intron and encodes an N-terminal-truncated protein lacking the repressor domain. Although WT1 overexpression is a common feature in AML, the expression levels of the AWT1 and its underlying epigenetic alterations, as well as their clinical relevance in AML remain unknown...
November 30, 2018: Clinical & Translational Oncology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"