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https://www.readbyqxmd.com/read/29625110/lncrna-tp73-as1-predicts-the-prognosis-of-bladder-cancer-patients-and-functions-as-a-suppressor-for-bladder-cancer-by-emt-pathway
#1
Zhiyong Tuo, Jianbin Zhang, Wei Xue
Long noncoding RNAs (lncRNAs) have been identified to have more and more important roles in tumorigenesis and may be novel biomarker for cancer therapy. LncRNA TP73-AS1 is a novel identified lncRNA that has been demonstrated to be increased in several cancers, however, its function in bladder cancer remains unknown. The aim of this work was to examine the expression and role of lncRNA TP73-AS1 in bladder cancer. The expression levels of lncRNA TP73-AS1 in bladder cancer tissues and cell lines were determined by quantitative real-time PCR (qRT-PCR), and its clinical significance was assessed by statistical analysis...
April 3, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29527164/microrna-455-3p-as-a-potential-biomarker-for-alzheimer-s-disease-an-update
#2
Subodh Kumar, P Hemachandra Reddy
A non-invasive and early-detectable peripheral biomarker is urgently needed for Alzheimer's disease (AD). The present study is a step forward to verify the biomarker properties of human microRNA-455-3p (Hsa-miR-455-3p) in AD patients. Our previous findings on mild cognitive impaired subjects, AD patients and AD cells and mouse models unveiled the miR-455-3p as a potential peripheral biomarker for AD. In the current study, we verified the differential expression of miR-455-3p in postmortem AD brains obtained from NIH NeuroBioBank, and fibroblasts and B-lymphocytes from both familial and sporadic AD patients from Coriell Cell Repository of National Institutes on Aging...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29506519/rnaseq-analysis-of-bronchial-epithelial-cells-to-identify-copd-associated-genes-and-snps
#3
Jiyoun Yeo, Diego A Morales, Tian Chen, Erin L Crawford, Xiaolu Zhang, Thomas M Blomquist, Albert M Levin, Pierre P Massion, Douglas A Arenberg, David E Midthun, Peter J Mazzone, Steven D Nathan, Ronald J Wainz, Patrick Nana-Sinkam, Paige F S Willey, Taylor J Arend, Karanbir Padda, Shuhao Qiu, Alexei Federov, Dawn-Alita R Hernandez, Jeffrey R Hammersley, Youngsook Yoon, Fadi Safi, Sadik A Khuder, James C Willey
BACKGROUND: There is a need for more powerful methods to identify low-effect SNPs that contribute to hereditary COPD pathogenesis. We hypothesized that SNPs contributing to COPD risk through cis-regulatory effects are enriched in genes comprised by bronchial epithelial cell (BEC) expression patterns associated with COPD. METHODS: To test this hypothesis, normal BEC specimens were obtained by bronchoscopy from 60 subjects: 30 subjects with COPD defined by spirometry (FEV1/FVC < 0...
March 5, 2018: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/29482641/transcription-factors-tp73-cebpd-pax6-and-spi1-rather-than-dna-methylation-regulate-chronic-transcriptomics-changes-after-experimental-traumatic-brain-injury
#4
Anssi Lipponen, Assam El-Osta, Antony Kaspi, Mark Ziemann, Ishant Khurana, Harikrishnan Kn, Vicente Navarro-Ferrandis, Noora Puhakka, Jussi Paananen, Asla Pitkänen
Traumatic brain injury (TBI) induces a wide variety of cellular and molecular changes that can continue for days to weeks to months, leading to functional impairments. Currently, there are no pharmacotherapies in clinical use that favorably modify the post-TBI outcome, due in part to limited understanding of the mechanisms of TBI-induced pathologies. Our system biology analysis tested the hypothesis that chronic transcriptomics changes induced by TBI are controlled by altered DNA-methylation in gene promoter areas or by transcription factors...
February 27, 2018: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/29479029/cytogenetic-genomic-and-epigenetic-characterization-of-the-hsc-3-tongue-cell-line-with-lymph-node-metastasis
#5
Ilda P Ribeiro, Joana M Rodrigues, Alexandra Mascarenhas, Nadezda Kosyakova, Francisco Caramelo, Thomas Liehr, Joana B Melo, Isabel M Carreira
Oral carcinoma develops from squamous epithelial cells by the acquisition of multiple (epi) genetic alterations that target different genes and molecular pathways. Herein, we performed a comprehensive genomic and epigenetic characterization of the HSC-3 cell line through karyotyping, multicolor fluorescence in situ hybridization, array comparative genomic hybridization, and methylation-specific multiplex ligation-dependent probe amplification. HSC-3 turned out to be a near-triploid cell line with a modal number of 61 chromosomes...
February 26, 2018: Journal of Oral Science
https://www.readbyqxmd.com/read/29474580/recently-evolved-tumor-suppressor-transcript-tp73-as1-functions-as-sponge-of-human-specific-mir-941
#6
Haiyang Hu, Jian-Mei Liu, Zhenyu Hu, Xi Jiang, Xiaode Yang, Jiangxia Li, Yao Zhang, Haijing Yu, Philipp Khaitovich
MicroRNA (miRNA) sponges are vital components of posttranscriptional gene regulation. Yet, only a limited number of miRNA sponges have been identified. Here, we show that the recently evolved non-coding tumor suppressor transcript, antisense RNA to TP73 gene (TP73-AS1), functions as a natural sponge of human-specific miRNA miR-941. We find unusually nine high-affinity miR-941 binding sites clustering within 1kb region on TP73-AS1, which forms miR-941 sponge region. This sponge region displays increased sequence constraint only in humans, and its formation can be traced to the tandem expansion of a 71-nt-long sequence containing a single miR-941 binding site in old world monkeys...
February 20, 2018: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29467540/identification-of-a-novel-microrna-mrna-regulatory-biomodule-in-human-prostate-cancer
#7
Yanqiong Zhang, Funeng Jiang, Huichan He, Jianheng Ye, Xia Mao, Qiuyan Guo, Shu-Lin Wu, Weide Zhong, Chin-Lee Wu, Na Lin
Our recent study identified a list of differentially expressed microRNAs (miRNAs) in human prostate cancer (PCa) tissues compared to adjacent benign prostate tissues. In the current study, to identify the crucial miRNA-mRNA regulatory biomodule involved into prostate carcinogenesis based on the previous miRNA expression profile in PCa, we proposed an integrated systematic approach which combined miRNA-mediated gene expression regulatory network analysis, experimental validations in vitro and in vivo, as well as clinical significance evaluation...
February 21, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29412778/the-long-noncoding-rna-tp73-as1-interacted-with-mir-124-to-modulate-glioma-growth-by-targeting-inhibitor-of-apoptosis-stimulating-protein-of-p53
#8
Shuai Xiao, Rensheng Wang, Xiangwei Wu, Wen Liu, Shanshan Ma
P73 antisense RNA 1T (non-protein coding), known as TP73-AS1 or PDAM, is a long noncoding RNA (lncRNA), which may regulate apoptosis by regulation of p53-dependent antiapoptotic genes. An abnormal change of TP73-AS1 expression was noticed in cancers. The effects of TP73-AS1 in brain glioma growth and the underlying mechanism remain unclear so far. In this study, the effect of TP73-AS1 in human brain glioma cell lines and clinical tumor samples was detected so as to reveal its role and function. In this study, TP73-AS1 was specifically upregulated in brain glioma cell lines and promoted glioma cell growth through targeting miR-124...
February 2018: DNA and Cell Biology
https://www.readbyqxmd.com/read/29405730/blockade-of-mir-663b-inhibits-cell-proliferation-and-induces-apoptosis-in-osteosarcoma-via-regulating-tp73-expression
#9
Y Shu, W Ye, Y L Gu, P Sun
OBJECTIVE: This study aimed to investigate the exact role of miR-663b in osteosarcoma (OS) progression and further explore the underlying molecular mechanisms. MATERIALS AND METHODS: The miR-663b expression in human OS cell lines was determined by qRT-PCR, and the results suggested that miR-663b was highly expressed in human OS cells. TargetScan was used to predict the potential targets of miR-663b, and the prediction was confirmed by dual-luciferase reporter assay...
2018: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29295500/decitabine-and-melphalan-fail-to-reactivate-p73-in-p53-deficient-myeloma-cells
#10
Pierre-Samuel Gillardin, Géraldine Descamps, Sophie Maiga, Benoit Tessoulin, Hanane Djamai, Benedetta Lucani, David Chiron, Philippe Moreau, Steven Le Gouill, Martine Amiot, Catherine Pellat-Deceunynck, Agnès Moreau-Aubry
(1) Background: TP53 deficiency remains a major adverse event in Multiple Myeloma (MM) despite therapeutic progresses. As it is not possible to target TP53 deficiency with pharmacological agents, we explored the possibility of activating another p53 family member, p73, which has not been well studied in myeloma. (2) Methods: Using human myeloma cell lines (HMCLs) with normal or abnormal TP53 status, we assessed TP73 methylation and expression. (3) Results: Using microarray data, we reported that TP73 is weakly expressed in 47 HMCLs and mostly in TP53 wild type ( TP53wt ) HMCLs ( p = 0...
December 23, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29258490/cytotoxic-antioxidative-genotoxic-and-antigenotoxic-effects-of-horchata-beverage-of-south-ecuador
#11
Natalia Bailon-Moscoso, Fani Tinitana, Ruth Martínez-Espinosa, Andrea Jaramillo-Velez, Alejandra Palacio-Arpi, Jessica Aguilar-Hernandez, Juan Carlos Romero-Benavides
BACKGROUND: "Horchata" is an herbal mixture infusion consumed in Southern Ecuador; 66% of its plants are anti-inflammatory medicinal plant, and 51% are analgesics. Anti-inflammatory substances can prevent carcinogenesis mediated by cytotoxic effects and can prevent DNA damage. The aim of this study was to evaluate the cytotoxicity and apoptotic/antigenotoxic effects of horchata as well as its mechanism. METHODS: Nine different varieties of horchata were prepared in the traditional way and then freeze-dried...
December 19, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29230693/clinical-implications-of-the-deregulated-tp73-isoforms-expression-in-cancer
#12
REVIEW
N Rodríguez, A Peláez, R Barderas, G Domínguez
TP73 is a member of the TP53 family whose expression has been observed altered in most human cancers and associated with the prognosis. TP73 translates into a complex number of isoforms with both oncogenic and tumour-suppressor functions and presents a complex cross-talk with other members of the family (TP53 and TP63). In this revision, we focus on the evidence that may support TP73 variants as prognostic markers in cancer. Nowadays, most publications in this topic highlight the association between overexpression of the oncogenic variants and failure to respond to chemotherapy and/or shorter survival...
December 11, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/29193903/genetic-susceptibility-to-thalidomide-embryopathy-in-humans-study-of-candidate-development-genes
#13
Julia do Amaral Gomes, Thayne Woycinck Kowalski, Lucas Rosa Fraga, Luciana Tovo-Rodrigues, Maria Teresa Vieira Sanseverino, Lavínia Schuler-Faccini, Fernanda Sales Luiz Vianna
Thalidomide is a drug used worldwide for several indications, but the molecular mechanisms of its teratogenic property are not fully understood. Studies in animal models suggest the oxidative stress, the inhibition of angiogenesis, and the binding to E3-ubiquitin ligase complex as mechanisms by which thalidomide can change the expression of genes important to embryonic development. In this study, seven polymorphisms in genes related to development (FGF8, FGF10, BMP4, SHH, TP53, TP63, and TP73) were analyzed in people with thalidomide embryopathy (TE) and compared to people without malformations...
November 28, 2017: Birth Defects Research
https://www.readbyqxmd.com/read/29024157/regulation-of-nonylphenol-induced-reproductive-toxicity-in-mouse-spermatogonia-cells-by-mir-361-3p
#14
Liyan Tang, Bo Zhao, Hui Zhang, Qiao Du, Jiang Zhu, Zhijiang Zhao, Ce Chen, Cheng Luo, Qiyuan Kang, Wenbing Yuan, Shaohua Bian, Hang Bi, Huimin Sun, Yingyi Li
Nonylphenol (NP) is an environmental chemical that affects apoptosis and male infertility. In our study, we found that a high concentration of NP could down-regulate the expression of microRNA-361-3p (miR-361-3p) in the murine GC-1 spermatogonia cell line and in vivo in murine spermatogonia. Additionally, one direct target of this miR, the 3' untranslated region of Killin (Klln) mRNA, was identified. Klln encodes a transcription factor that directly regulates the expression of Tp73 (transcriptionally active p73), whose encoded protein can up-regulate the expression of Puma (P53 upregulated modulator of apoptosis)...
October 12, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28978663/distinct-tp73-dapk2-atg5-pathway-involvement-in-ato-mediated-cell-death-versus-atra-mediated-autophagy-responses-in-apl
#15
Magali Humbert, Elena A Federzoni, Mario P Tschan
We have previously demonstrated that the death-associated protein kinase 2 (DAPK2) expression is significantly reduced in acute myeloid leukemia (AML), particularly in acute promyelocytic leukemia (APL) blast cells. In this study, we aimed at further understanding DAPK2 function and regulation during arsenic trioxide (ATO) cytotoxic or all-trans retinoic acid (ATRA) differentiation therapy in APL cells. We found that the p53 family member transactivation domain-p73 isoform (TAp73) binds to and activates the DAPK2 promoter, whereas the dominant-negative ΔNp73 isoform inhibits DAPK2 transcription...
December 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28978570/enhancer-profiling-identifies-critical-cancer-genes-and-characterizes-cell-identity-in-adult-t-cell-leukemia
#16
Regina Wan Ju Wong, Phuong Cao Thi Ngoc, Wei Zhong Leong, Alice Wei Yee Yam, Tinghu Zhang, Kaori Asamitsu, Shinsuke Iida, Takashi Okamoto, Ryuzo Ueda, Nathanael S Gray, Takashi Ishida, Takaomi Sanda
A number of studies have recently demonstrated that super-enhancers, which are large cluster of enhancers typically marked by a high level of acetylation of histone H3 lysine 27 and mediator bindings, are frequently associated with genes that control and define cell identity during normal development. Super-enhancers are also often enriched at cancer genes in various malignancies. The identification of such enhancers would pinpoint critical factors that directly contribute to pathogenesis. In this study, we performed enhancer profiling using primary leukemia samples from adult T-cell leukemia/lymphoma (ATL), which is a genetically heterogeneous intractable cancer...
November 23, 2017: Blood
https://www.readbyqxmd.com/read/28951630/identification-of-biomarkers-for-predicting-lymph-node-metastasis-of-stomach-cancer-using-clinical-dna-methylation-data
#17
Jun Wu, Yawen Xiao, Chao Xia, Fan Yang, Hua Li, Zhifeng Shao, Zongli Lin, Xiaodong Zhao
BACKGROUND: Lymph node (LN) metastasis was an independent risk factor for stomach cancer recurrence, and the presence of LN metastasis has great influence on the overall survival of stomach cancer patients. Thus, accurate prediction of the presence of lymph node metastasis can provide guarantee of credible prognosis evaluation of stomach cancer patients. Recently, increasing evidence demonstrated that the aberrant DNA methylation first appears before symptoms of the disease become clinically apparent...
2017: Disease Markers
https://www.readbyqxmd.com/read/28930610/rps6ka4-mir1237-and-aurkc-promoter-regions-are-differentially-methylated-in-wilms-tumor
#18
Hanna S Pereira, Sheila C Soares Lima, Paulo S de Faria, Leila Ca Cardoso, Hector N Seuanez
Wilms' tumor (WT) is the most frequent renal cancer in childhood, the occurrence of which is characterized by a relatively low frequency of associated mutations. While epigenetic alterations have been postulated to play a relevant role in the emergence of this tumor, the mechanisms involved in WT development remain largely unknown. In this study, the DNA methylation profile of WT was characterized with Beadchip array. Comparisons between WT with normal kidney identified 827 differentially methylated regions, most of which were attributable in hypermethylation in CpG islands...
January 1, 2018: Frontiers in Bioscience (Elite Edition)
https://www.readbyqxmd.com/read/28927526/putative-biomarkers-for-cervical-cancer-snvs-methylation-and-expression-profiles
#19
REVIEW
Maria de Fátima Senra Cardoso, Carlos Henrique Madeiros Castelletti, José Luiz de Lima-Filho, Danyelly Bruneska Gondim Martins, José António Couto Teixeira
Cervical cancer is primarily caused by Human papillomavirus (HPV) infection, but other factors such as smoking habits, co-infections and genetic background, can also contribute to its development. Although this cancer is avoidable, it is the fourth most frequent type of cancer in females worldwide and can only be treated with chemotherapy and radical surgery. There is a need for biomarkers that will enable early diagnosis and targeted therapy for this type of cancer. Therefore, a systems biology pipeline was applied in order to identify potential biomarkers for cervical cancer, which show significant reports in three molecular aspects: DNA sequence variants, DNA methylation pattern and alterations in mRNA/protein expression levels...
July 2017: Mutation Research
https://www.readbyqxmd.com/read/28915954/do-some-epithelial-ovarian-cancers-originate-from-a-fallopian-tube-ciliate-cell-lineage
#20
Jan Rohozinski, Conception Diaz-Arrastia, Creighton L Edwards
There is a general agreement that a large subpopulation of serous ovarian cancers arise from the fallopian tube mucosal epithelium. However, there is still some debate as to whether the cancers originate from a secretory or ciliate cell lineage. One well established method for determining the origin of a cell line is to document the expression of genes and proteins that are cell type specific. Lineage or tissue specific patterns of gene expression are evidence of direct decent from a given cell type within a tissue...
September 2017: Medical Hypotheses
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