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https://www.readbyqxmd.com/read/28634044/mir-218-suppresses-gastric-cancer-cell-cycle-progression-through-the-cdk6-cyclin-d1-e2f1-axis-in-a-feedback-loop
#1
Min Deng, Chao Zeng, Xihong Lu, Xiusheng He, Ruixin Zhang, Qinwei Qiu, Guopei Zheng, Xiaoting Jia, Hao Liu, Zhimin He
Studies in several cancers have suggested that miR-218 has anti-tumor activities, but its function is yet to be elucidated. In this study, we investigated the regulation and function of miR-218 (miR-218-5p) in the cell cycle progression of gastric cancer (GC). We found that miR-218 could suppress proliferation of gastric cancer cells, induce cell cycle arrest at the G1 phase and inhibit tumor growth and metastasis in vivo. We also demonstrated that miR-218 specifically targeted the 3'-UTR regions of CDK6 and cyclin D1 and inhibited the expression of these molecules, which in turn repressesed the pRb/E2F1 signaling pathway...
June 17, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28631573/effects-of-mir-1236-3p-and-mir-370-5p-on-activation-of-p21-in-various-tumors-and-its-inhibition-on-the-growth-of-lung-cancer-cells
#2
Chuanchang Li, Qiangqiang Ge, Jiaxuan Liu, Qingsong Zhang, Chenghe Wang, Kai Cui, Zhong Chen
The mechanism of dsRNA-induced gene activation (RNAa) is being gradually unveiled. The plentiful evidence that it existed in mammalian species other than human demonstrated that dsRNA-mediated RNAa is a conservative phenomenon. Simultaneously, accumulating evidence suggested that microRNAs could activate gene expression by targeting promoter. Nevertheless, it is ambiguous whether microRNA-induced gene activation in different human cells is a common phenomenon. The study we performed verified that miR-1236-3p (miR-1236) and miR-370-5p can activate p21 expression in bladder cancer (BCa) T24, EJ cells, and non-small-cell lung carcinoma A549 cells, while in hepatocellular HepG2 cells both microRNAs cannot effectively induce the expression of P21(WAF1/CIP1) (p21)...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28629825/ict1-predicts-a-poor-survival-and-correlated-with-cell-proliferation-in-diffuse-large-b-cell-lymphoma
#3
Wenjun Xie, Meijuan Wu, Tianhong Fu, Xiaohong Li, Zhaoming Wang, Yongxian Hu, Liyan Zhu, Gu Zhang
Immature colon carcinoma transcript-1 (ICT1) is a crucial member of the large mitoribosomal subunit in mitochondrial ribosome, which has been shown to be closely related to tumorigenesis. Its expression and function in human diffuse large B-cell lymphoma (DLBCL), however, remained elusive. In this study, analysis of public available Oncomine database suggested that the expression levels of ICT1 mRNA was significantly upregulated in DLBCL tissues. Consistently, we described ICT1 was remarkably upregulated in fresh DLBCL samples compared with the corresponding normal tissues using quantitative reverse-transcription polymerase chain reaction (qRT-PCR) and Western blotting...
June 16, 2017: Gene
https://www.readbyqxmd.com/read/28628119/differential-expression-of-mir16-in-glioblastoma-and-glioblastoma-stem-cells-their-correlation-with-proliferation-differentiation-metastasis-and-prognosis
#4
R Tian, J Wang, H Yan, J Wu, Q Xu, X Zhan, Z Gui, M Ding, J He
The function of miR16 in multiforme glioblastoma multiforme (GBM) and its stem cells (GSCs) remains elusive. To this end, we investigated the patterns of miR16 expression in these cells and their correlation with malignant behaviors and clinical outcomes. The levels of miR16 and its targeted genes in tumor tissue of GBM and GBM SGH44, U87, U251 cells as well as their stem cell counterparts were measured by qRT-PCR or western blot or immunohistochemistry. Luciferase reporter assay was used to confirm the binding of miR16 to 3'-UTR of its target genes...
June 19, 2017: Oncogene
https://www.readbyqxmd.com/read/28626035/cyclin-d3-cdk6-has-a-metabolic-prosurvival-role-in-t-all
#5
(no author information available yet)
Cyclin D3-CDK6 inhibits the glycolytic enzymes PFK1 and PKM2 to prevent T-ALL cell apoptosis.
June 16, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28621315/research-on-mirna-195-and-target-gene-cdk6-in-oral-verrucous-carcinoma
#6
Z Deng, Y Wang, X Fang, F Yan, H Pan, L Gu, C Xie, Y Li, Y Hu, Y Cao, Z Tang
Oral verrucous carcinoma (OVC) is a verrucous variant of oral cavity squamous carcinoma (OSCC). The expression of miRNA from OVC and OSCC including their matched normal oral mucosa tissues was profiled through the Affymetrix GeneChip miRNA Arrays. TargetScan and miRanda databases were used to predict the target gene of miRNA-195. The quantitative real-time PCR was applied to validate the expression of miRNA-195. The expression of CDK6 was investigated by the quantitative real-time PCR and immunohistochemistry...
June 16, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28611654/age-related-gene-expression-in-the-frontal-cortex-suggests-synaptic-function-changes-in-specific-inhibitory-neuron-subtypes
#7
Leon French, TianZhou Ma, Hyunjung Oh, George C Tseng, Etienne Sibille
Genome-wide expression profiling of the human brain has revealed genes that are differentially expressed across the lifespan. Characterizing these genes adds to our understanding of both normal functions and pathological conditions. Additionally, the specific cell-types that contribute to the motor, sensory and cognitive declines during aging are unclear. Here we test if age-related genes show higher expression in specific neural cell types. Our study leverages data from two sources of murine single-cell expression data and two sources of age-associations from large gene expression studies of postmortem human brain...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28607489/the-metabolic-function-of-cyclin-d3-cdk6-kinase-in-cancer-cell-survival
#8
Haizhen Wang, Brandon N Nicolay, Joel M Chick, Xueliang Gao, Yan Geng, Hong Ren, Hui Gao, Guizhi Yang, Juliet A Williams, Jan M Suski, Mark A Keibler, Ewa Sicinska, Ulrike Gerdemann, W Nicholas Haining, Thomas M Roberts, Kornelia Polyak, Steven P Gygi, Nicholas J Dyson, Piotr Sicinski
D-type cyclins (D1, D2 and D3) and their associated cyclin-dependent kinases (CDK4 and CDK6) are components of the core cell cycle machinery that drives cell proliferation. Inhibitors of CDK4 and CDK6 are currently being tested in clinical trials for patients with several cancer types, with promising results. Here, using human cancer cells and patient-derived xenografts in mice, we show that the cyclin D3-CDK6 kinase phosphorylates and inhibits the catalytic activity of two key enzymes in the glycolytic pathway, 6-phosphofructokinase and pyruvate kinase M2...
June 15, 2017: Nature
https://www.readbyqxmd.com/read/28603669/combining-multi-dimensional-data-to-identify-key-genes-and-pathways-in-gastric-cancer
#9
Wu Ren, Wei Li, Daguang Wang, Shuofeng Hu, Jian Suo, Xiaomin Ying
Gastric cancer is an aggressive cancer that is often diagnosed late. Early detection and treatment require a better understanding of the molecular pathology of the disease. The present study combined data on gene expression and regulatory levels (microRNA, methylation, copy number) with the aim of identifying key genes and pathways for gastric cancer. Data used in this study was retrieved from The Cancer Genomic Atlas. Differential analyses between gastric cancer and normal tissues were carried out using Limma...
2017: PeerJ
https://www.readbyqxmd.com/read/28587405/mirna-186-inhibits-prostate-cancer-cell-proliferation-and-tumor-growth-by-targeting-yy1-and-cdk6
#10
Shu Lu, Ming-Shan Wang, Pei-Jie Chen, Qiang Ren, Peiming Bai
microRNAs (miRNAs) are known to be important in tumor initiation and progression. Recent studies have demonstrated that miR-186 is critical in several types of cancer, including human non-small cell lung cancer, bladder cancer and pancreatic ductal adenocarcinoma. However, the functions of miR-186 in prostate cancer (PCa) are still unclear. In the present study, downregulation of miR-186 in PCa cells was detected when compared with the normal prostate cell line. When miR-186 overexpressed in PCa cells, cell proliferation in vitro was evidently inhibited as shown using cell counting kit-8 assays and cell-cycle analysis, and tumor growth in vivo was decreased as shown by tumor growth assays in nude mice...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28586006/butein-inhibits-nf-%C3%AE%C2%BAb-ap-1-and-akt-activation-in-adult-t-cell-leukemia-lymphoma
#11
Chie Ishikawa, Masachika Senba, Naoki Mori
Human T-cell leukemia virus type 1 (HTLV-1) is the causative agent of adult T-cell leukemia/lymphoma (ATLL) but there is no effective treatment for HTLV-1-associated diseases. Herein, we determined the effect of butein, a bioactive plant polyphenol, on cell growth, apoptosis and signaling pathways in HTLV-1-infected T-cell lines and on tumor growth in SCID mice. Treatment with butein caused a decrease in viability of HTLV-1-infected T-cell lines. T cells cultured with butein showed obvious apoptosis morphology, and cleavage of poly(ADP-ribose) polymerase with activation of caspase-3, -8 and -9...
June 2, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28584635/interactions-between-polymorphisms-in-the-3-untranslated-region-of-the-cyclin-dependent-kinase-6-gene-and-the-human-papillomavirus-infection-and-risk-of-cervical-precancerous-lesions
#12
Xingguang Ye, Lipeng Jing, Xingming Zhong, Di Xiao, Meiling Ou, Congcong Guo, Guang Yang, Chunxia Jing, Xiangcai Wei
The human papillomavirus (HPV) infection is essential for the development of cervical cancer and its precursor lesions. However, only certain persistently infected individuals develop cervical cancer. Cyclin-dependent kinase 6 (CDK6) is a critical regulatory cancer-associated gene in the cell cycle and in tumorigenesis. Single nucleotide polymorphisms (SNPs) in microRNA sites in the 3'-untranslated region (UTR) of target genes may result in target gene expression level changes and susceptibility to diseases, including cancer...
June 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28578693/cdk4-6-inhibitor-shr6390-exerts-potent-antitumor-activity-in-esophageal-squamous-cell-carcinoma-by-inhibiting-phosphorylated-rb-and-inducing-g1-cell-cycle-arrest
#13
Jiayuan Wang, Qingqing Li, Jiajia Yuan, Jingyuan Wang, Zuhua Chen, Zhentao Liu, Zhongwu Li, Yumei Lai, Jing Gao, Lin Shen
BACKGROUND: Cell cycle dysregulation is common in human malignancies, and CDK4/6 inhibitors targeting cell cycle have potential antitumor activity. SHR6390 is a novel small molecule inhibitor specifically targeting the CDK4/6 pathway. However, the role of SHR6390 in esophageal squamous cell carcinoma (ESCC) remains unknown, which will be investigated in our study. METHODS: Eca 109, Eca 9706, and KYSE-510 ESCC cell lines were chosen for further analysis. The effect of SHR6390 on cell viability, cell cycle and cell apoptosis, the status of kinases in Cyclin D1-CDK4/6-Rb pathway were determined by MTS assay, flow cytometry, and western blotting, respectively...
June 2, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28573225/emodin-downregulates-cell-proliferation-markers-during-dmba-induced-oral-carcinogenesis-in-golden-syrian-hamsters
#14
Asokan Manimaran, Rajamanickam Buddhan, Shanmugam Manoharan
BACKGROUND: Cell-cycle disruption is the major characteristic features of neoplastic transformation and the status of cell-cycle regulators can thus be utilized to assess the prognostic significance in patients with cancer. The PCNA, cyclin D1, CDK4, CDK6 and survivin expression in the buccal mucosa was utilized to evaluate the Emodin efficacy on abnormal cell proliferation during 7,12-dimethylbenz(a)anthracene (DMBA) induced oral carcinogenesis in golden Syrian hamsters. MATERIALS AND METHODS: Topical application of DMBA, three times a week for 14 weeks, on the hamsters' buccal pouches developed well differentiated squamous cell carcinoma...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28572861/genome-wide-dna-methylation-profiling-integrated-with-gene-expression-profiling-identifies-pax9-as-a-novel-prognostic-marker-in-chronic-lymphocytic-leukemia
#15
Lata Rani, Nitin Mathur, Ritu Gupta, Ajay Gogia, Gurvinder Kaur, Jaspreet Kaur Dhanjal, Durai Sundar, Lalit Kumar, Atul Sharma
BACKGROUND: In chronic lymphocytic leukemia (CLL), epigenomic and genomic studies have expanded the existing knowledge about the disease biology and led to the identification of potential biomarkers relevant for implementation of personalized medicine. In this study, an attempt has been made to examine and integrate the global DNA methylation changes with gene expression profile and their impact on clinical outcome in early stage CLL patients. RESULTS: The integration of DNA methylation profile (n = 14) with the gene expression profile (n = 21) revealed 142 genes as hypermethylated-downregulated and; 62 genes as hypomethylated-upregulated in early stage CLL patients compared to CD19+ B-cells from healthy individuals...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/28559972/foxq1-promotes-cancer-metastasis-by-pi3k-akt-signaling-regulation-in-colorectal-carcinoma
#16
Jia Yun Liu, Xiao Yu Wu, Guan Nan Wu, Fu-Kun Liu, Xue-Quan Yao
Colorectal cancer is one of the major health problems, with invade surrounding tissues, and migrate to distant organs being the most critical concern, thus identified metastasis associated hallmarks and more efficacious treatment are urgently needed. It found that forkhead box q1 (FOXQ1) is aberrant expression in variety of human cancers and FOXQ1 is involved in oncogenic pathways. However, the role of FOXQ1 has been unexplored in colorectal cancer metastasis to date. Here, expression of FOXQ1 was higher in colorectal cancer tissue samples and cancer cell lines than in normal colorectal tissue and cell lines...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28558682/anti-proliferative-potential-of-glucosamine-in-renal-cancer-cells-via-inducing-cell-cycle-arrest-at-g0-g1-phase
#17
Long-Sheng Wang, Shao-Jun Chen, Jun-Feng Zhang, Meng-Nan Liu, Jun-Hua Zheng, Xu-Dong Yao
BACKGROUND: Renal cell carcinoma (RCC) is one of the most common types of cancer in urological system worldwide. Recently, the anticancer role of Glucosamine has been studied in many types of cancer. The aim of this study was to investigate the effects of Glucosamine on RCC. METHODS: The effects of Glucosamine on RCC cell proliferation and apoptosis were investigated by MTT assay and Annexin V-FITC Apoptosis assay, respectively in vitro. Cell cycle was detected by flow cytometry after treatment with Glucosamine...
May 30, 2017: BMC Urology
https://www.readbyqxmd.com/read/28550733/immune-regulation-mechanism-of-astragaloside-iv-on-raw264-7-cells-through-activating-the-nf-%C3%AE%C2%BAb-mapk-signaling-pathway
#18
Yu Li, Tingting Meng, Ning Hao, Huanqing Tao, Suping Zou, Manman Li, Pengfei Ming, Hongyan Ding, Jihong Dong, Shibin Feng, Jinchun Li, Xichun Wang, Jinjie Wu
The present study was designed to investigate the effects of Astragaloside IV (ASIV) on the immune functions of RAW264.7 cells. Compared with control group, the concentrations of interleukin 1β (IL-1β), tumor necrosis factor α (TNF-α) and nitric oxide (NO) were higher in the 100μg/mL ASIV-treatment group. The interleukin 6 (IL-6) concentration was significantly higher in the 50 and 100μg/mL ASIV-treatment groups. The relative mRNA expression levels of IL-1β, TNF-α and inducible nitric oxide synthase (iNOS) were significantly higher in the 50 and 100μg/mL ASIV-treatment groups...
May 24, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28537883/preclinical-characterization-of-abemaciclib-in-hormone-receptor-positive-breast-cancer
#19
Raquel Torres-Guzmán, Bruna Calsina, Ana Hermoso, Carmen Baquero, Beatriz Alvarez, Joaquín Amat, Ann M McNulty, Xueqian Gong, Karsten Boehnke, Jian Du, Alfonso de Dios, Richard P Beckmann, Sean Buchanan, María José Lallena
Abemaciclib is an ATP-competitive, reversible kinase inhibitor selective for CDK4 and CDK6 that has shown antitumor activity as a single agent in hormone receptor positive (HR+) metastatic breast cancer in clinical trials. Here, we examined the mechanistic effects of abemaciclib treatment using in vitro and in vivo breast cancer models. Treatment of estrogen receptor positive (ER+) breast cancer cells with abemaciclib alone led to a decrease in phosphorylation of Rb, arrest at G1, and a decrease in cell proliferation...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28537766/pirfenidone-induces-g1-arrest-in-human-tenon-s-fibroblasts-in-vitro-involving-akt-and-mapk-signaling-pathways
#20
Xiujuan Guo, Yangfan Yang, Liling Liu, Xiaoan Liu, Jiangang Xu, Kaili Wu, Minbin Yu
PURPOSE: To investigate the underlying mechanism by which pirfenidone blocks the transition from the G1 to S phase in primary human Tenon's fibroblasts. METHODS: Primary human Tenon's fibroblasts were characterized by immunocytofluorescence staining with vimentin, fibroblast surface protein, and cytokeratin. After treating Tenon's fibroblasts with pirfenidone under proliferation conditions (10% fetal bovine serum), cell proliferation was measured using a WST-1 assay...
June 2017: Journal of Ocular Pharmacology and Therapeutics
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