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https://www.readbyqxmd.com/read/27913688/left-ventricle-transcriptomic-analysis-reveals-connective-tissue-accumulation-associates-with-initial-age-dependent-decline-in-v%C3%AC-o2peak-from-its-lifetime-apex
#1
Gregory N Ruegsegger, Ryan G Toedebusch, Joshua F Braselton, Thomas E Childs, Frank W Booth
Peak oxygen consumption (V̇O2peak) strongly predicts morbidity and mortality better than other established risk factors, yet mechanisms associated with its age-associated decline are unknown. Our lab has shown that V̇O2peak first begins to decrease at the same age of 19-20 weeks old in both sedentary and wheel-running, female Wistar rats (Toedebusch et al., Physiol Genomics. 48:101-15, 2016). Here, we employed a total systemic approach using unsupervised interrogation of mRNA with RNA-sequencing. The purpose of our study was to analyze transcriptomic profiles from both sedentary (SED) and wheel-running (RUN) conditions as a strategy to identify pathways in the left ventricle that may contribute to the initial reductions in V̇O2peak occurring between 19 and 27 weeks of age...
December 2, 2016: Physiological Genomics
https://www.readbyqxmd.com/read/27904780/low-expression-of-rbms3-and-sfrp1-are-associated-with-poor-prognosis-in-patients-with-gastric-cancer
#2
Tao Zhang, Youliang Wu, Zheng Fang, Qiang Yan, Shangxin Zhang, Ruochuan Sun, Junaid Khaliq, Yongxiang Li
RNA binding motif, single stranded interacting protein 3 (RBMS3) has been reported as a tumor suppressor gene (TSG) in some squamous carcinoma. However, its expression levels and clinical significance in gastric cancer (GC) remains unclear. Secreted frizzled-related protein 1 (SFRP1) plays a role of tumor suppressor in many cancers by inhibiting Wnt/β-catenin pathway. Nevertheless, its expression levels and clinical significance in GC are in dispute. In this study, quantitative real-time PCR and Western Blot were used to measure the mRNA and protein level of RBMS3 and SFRP1 in 23 fresh GC and corresponding normal tissues...
2016: American Journal of Cancer Research
https://www.readbyqxmd.com/read/27896617/comprehensive-dna-methylation-and-mutation-analyses-reveal-a-methylation-signature-in-colorectal-sessile-serrated-adenomas
#3
Árpád V Patai, Barbara Kinga Barták, Bálint Péterfia, Tamás Micsik, Réka Horváth, Csaba Sumánszki, Zoltán Péter, Árpád Patai, Gábor Valcz, Alexandra Kalmár, Kinga Tóth, Tibor Krenács, Zsolt Tulassay, Béla Molnár
Colorectal sessile serrated adenomas (SSA) are hypothesized to be precursor lesions of an alternative, serrated pathway of colorectal cancer, abundant in genes with aberrant promoter DNA hypermethylation. In our present pilot study, we explored DNA methylation profiles and examined selected gene mutations in SSA. Biopsy samples from patients undergoing screening colonoscopy were obtained during endoscopic examination. After DNA isolation and quality analysis, SSAs (n = 4) and healthy controls (n = 5) were chosen for further analysis...
November 29, 2016: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/27891190/cell-free-dna-promoter-hypermethylation-in-plasma-as-a-diagnostic-marker-for-pancreatic-adenocarcinoma
#4
Stine Dam Henriksen, Poul Henning Madsen, Anders Christian Larsen, Martin Berg Johansen, Asbjørn Mohr Drewes, Inge Søkilde Pedersen, Henrik Krarup, Ole Thorlacius-Ussing
BACKGROUND: Pancreatic cancer has a 5-year survival rate of only 5-7%. Difficulties in detecting pancreatic cancer at early stages results in the high mortality and substantiates the need for additional diagnostic tools. Surgery is the only curative treatment and unfortunately only possible in localized tumours. A diagnostic biomarker for pancreatic cancer will have a major impact on patient survival by facilitating early detection and the possibility for curative treatment. DNA promoter hypermethylation is a mechanism of early carcinogenesis, which can cause inactivation of tumour suppressor genes...
2016: Clinical Epigenetics
https://www.readbyqxmd.com/read/27835605/meta-analysis-of-dna-methylation-biomarkers-in-hepatocellular-carcinoma
#5
Cheng Zhang, Jinyun Li, Tao Huang, Shiwei Duan, Dongjun Dai, Danjie Jiang, Xinbing Sui, Da Li, Yidan Chen, Fei Ding, Changxin Huang, Gongying Chen, Kaifeng Wang
DNA methylation is an epigenetic mechanism in the pathogenesis of hepatocellular carcinoma (HCC). Here, we conducted a systematic meta-analysis to evaluate the contribution of DNA methylation to the risk of HCC. A total of 2109 publications were initially retrieved from PubMed, Web of Science, Cochrane Library, Embase, CNKI and Wanfang literature database. After a four-step filtration, we harvested 144 case-control articles in the meta-analysis. Our results revealed that 24 genes (carcinoma tissues vs adjacent tissues), 17 genes (carcinoma tissues vs normal tissues) and six genes (carcinoma serums vs normal serums) were significantly hypermethylated in HCC...
November 8, 2016: Oncotarget
https://www.readbyqxmd.com/read/27828711/wnt5a-deficiency-regulates-inflammatory-cytokine-secretion-polarization-and-apoptosis-in-mycobacterium-tuberculosis-infected-macrophages
#6
Deming Chen, Guobao Li, Xiangdong Fu, Pei Li, Jie Zhang, Lan Luo
Tuberculosis, an infectious disease caused by Mycobacterium tuberculosis (MTB), is one of the global public health catastrophes. Wnt signaling has recently been identified to exert immunoregulatory functions in a variety of inflammatory and infectious diseases, including tuberculosis. The opposite expression of Wnt5a in human and mice during MTB infection drives us to explore the roles and biological significances of reduced Wnt5a for MTB-treated mice. In our study, the reduction of WNT5A in MTB-treated mice lung tissues or MTB-infected mice bone marrow-derived macrophages (BM-Mø) was in a dose- and time-dependent manner...
November 9, 2016: DNA and Cell Biology
https://www.readbyqxmd.com/read/27786176/exploring-the-intrinsic-differences-among-breast-tumor-subtypes-defined-using-immunohistochemistry-markers-based-on-the-decision-tree
#7
Yang Li, Xu-Qing Tang, Zhonghu Bai, Xiaofeng Dai
Exploring the intrinsic differences among breast cancer subtypes is of crucial importance for precise diagnosis and therapeutic decision-making in diseases of high heterogeneity. The subtypes defined with several layers of information are related but not consistent, especially using immunohistochemistry markers and gene expression profiling. Here, we explored the intrinsic differences among the subtypes defined by the estrogen receptor, progesterone receptor and human epidermal growth factor receptor 2 based on the decision tree...
October 27, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27784346/-application-of-bisulfite-sequencing-pcr-in-detecting-the-abnormal-methylation-of-suppressor-gene-of-wnt-signaling-pathway-in-acute-promyelocytic-leukemia
#8
Jian-Guo Yan, Hai-Ying Fu, Jian-Zhen Shen, Hua-Rong Zhou, Yuan-Yuan Zhang, Jing-Long Huang, Cong-Jie Chen, Si-Han Huang
OBJECTIVE: To detect the abnormal methylation of the CPG island in the suppressor gene promoter region of the Wnt signaling pathway in cell strain NB4 of the acute promyelocytic leukemia by using the bisulfite sequcucing PCR(BSP), to screan the hyper-methylated suppressor gene of the Wnt signaling pathway and to evaluatc the potency of BSP in the methylation study. METHODS: The strain NB4 cells of the acute promyelocytic leukemia patients were used as the object, the mononuclear cells from 20 normal persons were used as the controls...
October 2016: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/27776347/sirt1-suppresses-adipogenesis-by-activating-wnt-%C3%AE-catenin-signaling-in-vivo-and-in-vitro
#9
Yuanfei Zhou, Tingxing Song, Jie Peng, Zheng Zhou, Hongkui Wei, Rui Zhou, Siwen Jiang, Jian Peng
Sirtuin 1 (SIRT1) regulates adipocyte and osteoblast differentiation. However, the underlying mechanism should be investigated. This study revealed that SIRT1 acts as a crucial repressor of adipogenesis. RNA-interference-mediated SIRT1 knockdown or genetic ablation enhances adipogenic potential, whereas SIRT1 overexpression inhibits adipogenesis in mesenchymal stem cells (MSCs). SIRT1 also deacetylates the histones of sFRP1, sFRP2, and Dact1 promoters; inhibits the mRNA expression of sFRP1, sFRP2, and Dact1; activates Wnt signaling pathways; and suppresses adipogenesis...
October 20, 2016: Oncotarget
https://www.readbyqxmd.com/read/27739564/genetic-variants-in-the-3-untranslated-region-of-sfrp1-gene-and-risk-of-gastric-cancer-in-a-chinese-population
#10
Juan Wu, Junfeng Zhang, Qinhong Cao, Junqin Wang, Zhen Zhan, Zhong Li
BACKGROUND: Secreted frizzled-related protein 1 (sFRP1), a negative regulator of the Wnt signaling pathway, is frequently inactivated in human gastric cancer. Genetic variants in the 3' untranslated region (UTR) of the gene may influence the strength of miRNA binding and the regulation of mRNA transcription, affecting the individual's cancer risk. This study aims to investigate the impact of variants in the 3' UTR of sFRP1 on the gastric cancer susceptibility in a Chinese population. PATIENTS AND METHODS: The association between 2 sFRP1 gene variation loci (rs1127379 and rs10088390) with minor allele frequency more than 0...
October 10, 2016: International Journal of Biological Markers
https://www.readbyqxmd.com/read/27722841/integrated-analysis-of-gene-expression-and-methylation-profiles-of-48-candidate-genes-in-breast-cancer-patients
#11
Zibo Li, Jianfu Heng, Jinhua Yan, Xinwu Guo, Lili Tang, Ming Chen, Limin Peng, Yepeng Wu, Shouman Wang, Zhi Xiao, Zhongping Deng, Lizhong Dai, Jun Wang
PURPOSE: Gene-specific methylation and expression have shown biological and clinical importance for breast cancer diagnosis and prognosis. Integrated analysis of gene methylation and gene expression may identify genes associated with biology mechanism and clinical outcome of breast cancer and aid in clinical management. METHODS: Using high-throughput microfluidic quantitative PCR, we analyzed the expression profiles of 48 candidate genes in 96 Chinese breast cancer patients and investigated their correlation with gene methylation and associations with breast cancer clinical parameters...
November 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27719707/-expression-of-secreted-frizzled-related-protein-1-in-patient-with-oral-submucous-fibrosis
#12
F Y Lyu, H F Wang, C J Xu, Z Xu, D M Li, Y T Chi
Objective: To investigate the concentrations and clinical significance of secreted frizzled-related protein-1(SFRP1) insaliva and gingival crevicular fluid of patients with oral submucous fibrosis (OSF) as well as the expression of SFRP1 in patients' OSF buccal mucosa. Methods: Twenty OSF patients aged 20 to 40 years old were recruited and randomly divided into two experimental groups, of which were triamcinolone acetonide group and combined triamcinolone acetonide and salvia miltiorrhiza group, respectively...
October 9, 2016: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/27704264/analysis-of-molecular-alterations-in-laterally-spreading-tumors-of-the-colorectum
#13
Tamotsu Sugai, Wataru Habano, Ryo Takagi, Hiroo Yamano, Makoto Eizuka, Noriyuki Arakawa, Yayoi Takahashi, Eiichiro Yamamoto, Keisuke Kawasaki, Syunichi Yanai, Kazuyuki Ishida, Hiromu Suzuki, Takayuki Matsumoto
BACKGROUND: Colorectal laterally spreading tumors (LSTs) are classified into LST-Gs and LST-NGs, according to macroscopic findings. In the present study, we determined the genetic and epigenetic alterations within colorectal LSTs and protruding adenomas. METHODS: A crypt isolation method was used to isolate DNA from tumors and normal glands of 73 macroscopically verified colorectal LSTs (histologically defined adenomas; 38 LST-Gs and 35 LST-NGs) and 36 protruding adenomas...
October 4, 2016: Journal of Gastroenterology
https://www.readbyqxmd.com/read/27668319/mir-339-and-especially-mir-766-reactivate-the-expression-of-tumor-suppressor-genes-in-colorectal-cancer-cell-lines-through-dna-methyltransferase-3b-gene-inhibition
#14
Ali Afgar, Pezhman Fard-Esfahani, Amirhosein Mehrtash, Kayhan Azadmanesh, Farnaz Khodarahmi, Mahdis Ghadir, Ladan Teimoori-Toolabi
It is observed that upregulation of DNMT3B enzyme in some cancers, including colon cancer, could lead to silencing of tumor suppressor genes. MiR-339 and miR-766 have been predicted to target 3'UTR of DNMT3B gene. Luciferase reporter assay validated that individual and co-transfection of miR-766 and miR-339 into the HEK293T cell reduced luciferase activity to 26% ± 0.41%, 43% ± 0.42 and 64% ± 0.52%, respectively, compared to the control (P < 0.05). Furthermore, transduction of miR-339 and miR-766 expressing viruses into colon cancer cell lines (SW480 and HCT116) decreased DNMT3B expression (1...
September 26, 2016: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/27659069/methylation-of-sfrp2-gene-as-a-promising-noninvasive-biomarker-using-feces-in-colorectal-cancer-diagnosis-a-systematic-meta-analysis
#15
Qihua Yang, Tao Huang, Guoliang Ye, Bojun Wang, Xinjun Zhang
Methylation of secreted frizzled-related protein genes (SFRP) associated with the Wnt signaling pathway has previously been reported. However, the diagnostic role of SFRP methylation in colorectal cancer (CRC) remains unclear. A systematic search was performed to identify eligible articles for analysis. The pooled OR showed that SFRP1, SFRP2, SFRP4 and SFRP5 methylation was significantly higher in CRC and benign mucosal lesions than in normal colonic mucosa. When CRC was compared to benign mucosal lesions, SFRP1 and SFRP2 methylation had a significantly higher OR, but methylated SFRP4 and SFRP5 had a similar OR...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27599467/the-expression-of-sfrp1-sfrp3-dvl1-and-dvl2-proteins-in-testicular-germ-cell-tumors
#16
Dora Fabijanovic, Iris Zunic, Tamara Nikuseva Martic, Faruk Skenderi, Ljiljana Serman, Semir Vranic
Germ cell tumors of the testis are a heterogeneous group of neoplasms that affect male adolescents and young adults. Wnt signaling pathway components have been shown to be actively involved in normal and malignant germ cell differentiation and progression. In this study, we aimed to explore the expression patterns of the secreted frizzled-related protein (SFRP) and Disheveled protein family (DVL) in a subset of testicular germ cell tumors. Eighty-five formalin-fixed, paraffin-embedded tissue samples of the primary germ cell tumors of the testis were stained against SFRP1, SFRP3, DVL1, and DVL2 proteins using immunohistochemistry...
November 2016: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/27586466/evaluation-of-expression-of-the-wnt-signaling-components-in-canine-mammary-tumors-by-rt%C3%A2-profiler-pcr-array-and-immunochemistry
#17
Fang Yu, Roberta Rasotto, Hong Zhang, Shimin Pei, Bin Zhou, Xu Yang, Yipeng Jin, Di Zhang, Degui Lin
The Wnt signaling pathway and its key component β-catenin play critical roles in the development of diseases such as tumors in mammals. However, little is known about involvement of the Wnt/β-catenin signaling pathway in canine mammary tumors (CMTs). The present study detected the expression of 30 Wnt signaling pathway-related genes in CMTs, which are potentially useful for molecular diagnosis of CMTs and the development of new targeted therapies. Significant upregulation of DKK1, SFRP1, FZD3, β-catenin and LEF1 was detected in highly malignant CMTs compared to those in normal mammary gland tissues; while extremely significant upregulation of WNT5A was found in low malignant CMTs...
September 1, 2016: Journal of Veterinary Science
https://www.readbyqxmd.com/read/27570179/sfrp1-repression-in-prostate-cancer-is-triggered-by-two-different-epigenetic-mechanisms
#18
Pilar García-Tobilla, Susana R Solórzano, Iván Salido-Guadarrama, Vanessa González-Covarrubias, Gustavo Morales-Montor, Carlos E Díaz-Otañez, Mauricio Rodríguez-Dorantes
Worldwide, prostate cancer (PCa) is the second cause of death from malignant tumors among men. Establishment of aberrant epigenetic modifications, such as histone post-translational modifications (PTMs) and DNA methylation (DNAme) produce alterations of gene expression that are common in PCa. Genes of the SFRP family are tumor suppressor genes that are frequently silenced by DNA hypermethylation in many cancer types. The SFRP family is composed of 5 members (SFRP1-5) that modulate the WNT pathway, which is aberrantly activated in PCa...
November 30, 2016: Gene
https://www.readbyqxmd.com/read/27545991/-fibrous-nests-in-human-hepatocellular-carcinoma-express-a-wnt-induced-gene-signature-associated-with-poor-clinical-outcome
#19
Romain Désert, Sihem Mebarki, Mireille Desille, Marie Sicard, Elise Lavergne, Stéphanie Renaud, Damien Bergeat, Laurent Sulpice, Christine Perret, Bruno Turlin, Bruno Clément, Orlando Musso
Hepatocellular carcinoma (HCC) is the 3rd cause of cancer-related death worldwide. Most cases arise in a background of chronic inflammation, extracellular matrix (ECM) remodeling, severe fibrosis and stem/progenitor cell amplification. Although HCCs are soft cellular tumors, they may contain fibrous nests within the tumor mass. Thus, the aim of this study was to explore cancer cell phenotypes in fibrous nests. Combined anatomic pathology, tissue microarray and real-time PCR analyses revealed that HCCs (n=82) containing fibrous nests were poorly differentiated, expressed Wnt pathway components and target genes, as well as markers of stem/progenitor cells, such as CD44, LGR5 and SOX9...
August 18, 2016: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/27539752/the-inhibition-of-ezh2-ameliorates-osteoarthritis-development-through-the-wnt-%C3%AE-catenin-pathway
#20
Linwei Chen, Yaosen Wu, Yan Wu, Ye Wang, Liaojun Sun, Fangcai Li
The purpose of our study was to elucidate the role of the histone methyltransferase enhancer of zeste homologue 2 (EZH2) in the pathophysiology of osteoarthritis (OA) and to develop a strategy to modulate EZH2 activity for OA treatment. The expression of EZH2 in normal and OA human cartilage was compared by western blotting. The effect of EZH2 overexpression and inhibition on chondrocyte hypertrophy related gene expression was examined by real-time PCR, and histone methylation on the promoter of the Wnt inhibitor SFRP1 was analyzed using a chromatin immunoprecipitation (ChIP) PCR...
2016: Scientific Reports
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