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https://www.readbyqxmd.com/read/28212593/micrornas-and-endometriosis-distinguishing-drivers-from-passengers-in-disease-pathogenesis
#1
Warren B Nothnick
Endometriosis is a disease common in women of reproductive age, characterized by pelvic pain and infertility. Despite its prevalence, the factors and mechanisms which contribute to the development and survival of ectopic lesions remain uncertain. MicroRNAs (miRNAs) are small RNA molecules that regulate posttranscriptional gene regulation which have been proposed to contribute to the pathogenesis of many diseases including that of endometriosis. This review summarizes the results of initial studies describing differentially expressed miRNAs between endometriotic lesion tissue and eutopic endometrium...
February 17, 2017: Seminars in Reproductive Medicine
https://www.readbyqxmd.com/read/28212592/novel-insights-into-gonadotropin-releasing-hormone-action-in-the-pituitary-gonadotrope
#2
Jessica L Brown, Mark Roberson
The hypothalamic-pituitary-gonadal axis controls reproduction via a series of hormones regulating gonadal function through interconnected feedback loops. Secretion of hypothalamic-derived gonadotropin-releasing hormone (GnRH) integrates inputs from higher brain centers to coordinate the activity of the pituitary gonadotrope and the biosynthesis and secretion of the gonadotropins which ultimately regulate gonadal function. Failure of GnRH to serve as the central integrator of this system has been associated with hypogonadotropic-hypogonadism and clinical infertility, while pharmacological application of GnRH analogs and gonadotropins have important implications of the treatment of such infertility...
February 17, 2017: Seminars in Reproductive Medicine
https://www.readbyqxmd.com/read/28212586/effects-of-resistance-band-exercise-on-vascular-activity-and-fitness-in-older-adults
#3
Mark F Smith, Mistrelle Ellmore, Geoff Middleton, Paul M Murgatroyd, Thomas I Gee
This study investigated the effects of a low to moderately intense resistance-band exercise intervention on cutaneous microvascular function in an older population. 18 sedentary healthy participants (age: 58±5) were assessed for their upper and lower-limb endothelial cutaneous vascular conductance using laser Doppler fluximetry with endothelial-dependent (80 μl acetylcholine chloride), and -independent vasodilation (80 μl sodium nitroprusside). In addition, participants underwent a range of functional assessments (cardiopulmonary fitness, strength, flexibility), and completed a perceived quality of life questionnaire...
February 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28212584/hyaluronic-acid-serum-albumin-conjugate-based-nanoparticles-for-targeted-cancer-therapy
#4
Ravit Edelman, Yehuda G Assaraf, Inna Levitzky, Tal Shahar, Yoav D Livney
Multiple carcinomas including breast, ovarian, colon, lung and stomach cancer, overexpress the hyaluronic acid (HA) receptor, CD44. Overexpression of CD44 contributes to key cancer processes including tumor invasion, metastasis, recurrence, and chemoresistance. Herein, we devised novel targeted nanoparticles (NPs) for delivery of anticancer chemotherapeutics, comprised of self-assembling Maillard reaction-based conjugates of HA and bovine serum albumin (BSA). HA served as the hydrophilic block, and as the ligand for actively targeting cancer cells overexpressing CD44...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212583/role-of-topk-in-lipopolysaccharide-induced-breast-cancer-cell-migration-and-invasion
#5
Min-Ah Seol, Jung-Hwan Park, Ji Heun Jeong, Jungmook Lyu, Seung Yun Han, Sang-Muk Oh
Inflammation has been known to be linked to invasion or metastasis of breast cancer, which has poor prognosis, although the regulatory mechanism remains to be undiscovered. Here we show that T-LAK cell-originated protein kinase (TOPK) mediates pro-inflammatory endotoxin lipopolysaccharide (LPS)-induced breast cancer cell migration and invasion. The mRNA or protein level of TOPK, toll- like receptor4 (TLR4), interleukin (IL)-6, vascular endothelial growth factor (VEGF) or matrix metalloproteinase9 (MMP9) genes related to TLR4 signaling or tumor progression was induced by LPS treatment in MCF7 breast cancer cells, but the induction was abolished by stable knocking down of TOPK in MCF7 cells...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212573/dynamic-variations-in-epithelial-to-mesenchymal-transition-emt-atm-and-slfn11-govern-response-to-parp-inhibitors-and-cisplatin-in-small-cell-lung-cancer
#6
C Allison Stewart, Pan Tong, Robert J Cardnell, Triparna Sen, Lerong Li, Carl M Gay, Fatemah Masrorpour, You Fan, Rasha O Bara, Ying Feng, Yuanbin Ru, Junya Fujimoto, Samrat T Kundu, Leonard E Post, Karen Yu, Yuqiao Shen, Bonnie S Glisson, Ignatio Wistuba, John V Heymach, Don L Gibbons, Jing Wang, Lauren Averett Byers
Small cell lung cancer (SCLC) is one of the most aggressive forms of cancer, with a 5-year survival <7%. A major barrier to progress is the absence of predictive biomarkers for chemotherapy and novel targeted agents such as PARP inhibitors. Using a high-throughput, integrated proteomic, transcriptomic, and genomic analysis of SCLC patient-derived xenografts (PDXs) and profiled cell lines, we identified biomarkers of drug sensitivity and determined their prevalence in patient tumors. In contrast to breast and ovarian cancer, PARP inhibitor response was not associated with mutations in homologous recombination (HR) genes (e...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212570/altered-amygdala-and-hippocampus-effective-connectivity-in-mild-cognitive-impairment-patients-with-depression-a-resting-state-functional-mr-imaging-study-with-granger-causality-analysis
#7
Li Juan Zheng, Gui Fen Yang, Xin Yuan Zhang, Yun Fei Wang, Ya Liu, Gang Zheng, Guang Ming Lu, Long Jiang Zhang, Ying Han
Neuroimaging studies have demonstrated that the major depression disorder would increase the risk of dementia in the older with amnestic cognitive impairment. We used granger causality analysis algorithm to explore the amygdala- and hippocampus-based directional connectivity patterns in 12 patients with major depression disorder and amnestic cognitive impairment (mean age: 69.5 ± 10.3 years), 13 amnestic cognitive impairment patients (mean age: 72.7 ± 8.5 years) and 14 healthy controls (mean age: 64.7 ± 7...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212569/mir-124-acts-as-a-tumor-suppressor-by-inhibiting-the-expression-of-sphingosine-kinase-1-and-its-downstream-signaling-in-head-and-neck-squamous-cell-carcinoma
#8
Yuan Zhao, Zhiqiang Ling, Yubin Hao, Xiaowu Pang, Xianlin Han, Joseph A Califano, Liang Shan, Xinbin Gu
By analyzing the expression profile of microRNAs in head and neck squamous cell carcinomas (HNSCC), we found that the expression level of miR-124 was 4.59-fold lower in tumors than in normal tissues. To understand its functions, we generated a miR-124-expressing subline (JHU-22miR124) and a mock vector-transfected subline (JHU-22vec) by transfecting the mimic of miR-124 into JHU-22 cancer cells. Restored expression of miR-124 in JHU-22miR124 cells led to reduced cell proliferation, delayed colony formation, and decreased tumor growth, indicating a tumor-suppressive effect of miR-124...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212567/ribosomal-dna-status-inferred-from-dna-cloud-assays-and-mass-spectrometry-identification-of-agarose-squeezed-proteins-interacting-with-chromatin-aspic-ms
#9
Kamil Krol, Justyna Jendrysek, Janusz Debski, Marek Skoneczny, Anna Kurlandzka, Joanna Kaminska, Michal Dadlez, Adrianna Skoneczna
Ribosomal RNA-encoding genes (rDNA) are the most abundant genes in eukaryotic genomes. To meet the high demand for rRNA, rDNA genes are present in multiple tandem repeats clustered on a single or several chromosomes and are vastly transcribed. To facilitate intensive transcription and prevent rDNA destabilization, the rDNA-encoding portion of the chromosome is confined in the nucleolus. However, the rDNA region is susceptible to recombination and DNA damage, accumulating mutations, rearrangements and atypical DNA structures...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212566/genetic-characterization-of-polish-ccrcc-patients-somatic-mutation-analysis-of-pbrm1-bap1-and-kdmc5-genomic-snp-array-analysis-in-tumor-biopsy-and-preliminary-results-of-chromosome-aberrations-analysis-in-plasma-cell-free-dna
#10
Katarzyna Kluzek, Malgorzata I Srebniak, Weronika Majer, Agnieszka Ida, Tomasz Milecki, Kinga Huminska, Robert M van der Helm, Adrian Silesian, Tomasz M Wrzesinski, Jacek Wojciechowicz, Berna H Beverloo, Zbigniew Kwias, Hans A R Bluyssen, Joanna Wesoly
BACKGROUND: Mutation analysis and cytogenetic testing in clear cell renal cell carcinoma (ccRCC) is not yet implemented in a routine diagnostics of ccRCC. MATERIAL AND METHODS: We characterized the chromosomal alterations in 83 ccRCC tumors from Polish patients using whole genome SNP genotyping assay. Moreover, the utility of next generation sequencing of cell free DNA (cfDNA) in patients plasma as a potential tool for non-invasive cytogenetic analysis was tested...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212564/s100a7-promotes-the-migration-invasion-and-metastasis-of-human-cervical-cancer-cells-through-epithelial-mesenchymal-transition
#11
Tian Tian, Xukun Li, Zhen Hua, Jianlin Ma, Xiaowei Wu, Zhihua Liu, Hongyan Chen, Zhumei Cui
S100A7 is an EF-hand calcium-binding protein that has been suggested to be implicated in cell proliferation, migration, invasion and tumor metastasis. However, its role in cervical cancer has not yet been fully clarified. The present study used immunohistochemistry analysis of S100A7 in clinical specimens of cervical cancer to show that S100A7 expression was significantly upregulated in cervical cancer tissues compared with normal cervical tissues and S100A7 expression in high grade cervical intraepithelial neoplasm (CIN) was significantly higher than cervical cancer...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212563/progression-of-motor-deficits-in-glioma-bearing-mice-impact-of-cnf1-therapy-at-symptomatic-stages
#12
Eleonora Vannini, Federica Maltese, Francesco Olimpico, Alessia Fabbri, Mario Costa, Matteo Caleo, Laura Baroncelli
Glioblastoma (GBM) is the most aggressive type of brain tumor. In this context, animal models represent excellent tools for the early detection and longitudinal mapping of neuronal dysfunction, that are critical in the preclinical validation of new therapeutic strategies. In a mouse glioma model, we developed sensitive behavioral readouts that allow early recognizing and following neurological symptoms. We injected GL261 cells into the primary motor cortex of syngenic mice and we used a battery of behavioral tests to longitudinally monitor the dysfunction induced by tumor growth...
February 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212550/plcb4-copy-gain-and-plc%C3%A3-4-overexpression-in-primary-gastrointestinal-stromal-tumors-integrative-characterization-of-a-lipid-catabolizing-enzyme-associated-with-worse-disease-free-survival
#13
Chien-Feng Li, Ting-Ting Liu, I-Chieh Chuang, Yen-Yang Chen, Fu-Min Fang, Ti-Chun Chan, Wan-Shan Li, Hsuan-Ying Huang
To explore the implications of lipid catabolism-associated genes in gastrointestinal stromal tumors, we reappraised transcriptomic and genomic datasets and identified copy-gained and differentially upregulated PLCB4 gene associated with tumor progression. On full sections, PLCB4 mRNA abundance and PLCß4 immunoexpression were validated in 70 cases. On tissue microarrays, PLCB4 gene copies and PLCß4 immunoexpression were both informative in 350 cases with KIT/PDGFRA/BRAF genotypes noted in 213. In GIST48 cell line, we stably silenced PLCB4 and YAP1 to characterize their functional effects and regulatory link...
February 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212545/snora74b-gene-silencing-inhibits-gallbladder-cancer-cells-by-inducing-phlpp-and-suppressing-akt-mtor-signaling
#14
Yiyu Qin, Li Meng, Yang Fu, Zhiwei Quan, Mingzhe Ma, Mingzhe Weng, Zhengdong Zhang, Cuixiang Gao, Xinghua Shi, Koulan Han
Small nucleolar RNAs (snoRNAs) have been implicated in the development of many cancers. We therefore examined the differential expression of snoRNAs between gallbladder cancer (GBC) tissues and matched adjacent non-tumor tissues using expression microarray analysis with confirmation by quantitative real-time PCR (qRT-PCR). Western blot analysis showed that SNORA74B levels were higher in GBC than non-tumor tissues. SNORA74B expression was positively associated with local invasion, advanced TNM stage, CA19-9 level, and Ki67 expression in patients with GBC, while it was negatively associated with expression of PHLPP, an endogenous Akt inhibitor...
February 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212538/sevoflurane-preconditioning-induced-endogenous-neurogenesis-against-ischemic-brain-injury-by-promoting-microglial-activation
#15
Li Li, Hexige Saiyin, Jingmo Xie, Lixiang Ma, Lei Xue, Wei Wang, Weimin Liang, Qiong Yu
Brain ischemia causes irreversible damage to functional neurons in cases of infarct. Promoting endogenous neurogenesis to replace necrotic neurons is a promising therapeutic strategy for ischemia patients. The neuroprotective role of sevoflurane preconditioning implies that it might also enhance endogenous neurogenesis and functional restoration in the infarct region. By using a transient middle cerebral artery occlusion (tMCAO) model, we discovered that endogenous neurogenesis was enhanced by sevoflurane preconditioning...
February 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212534/association-between-echocardiographic-structural-parameters-and-body-weight-in-wistar-rats
#16
Silvio A Oliveira-Junior, Paula F Martinez, William Y C Fan, Bruno T Nakatani, Luana U Pagan, Carlos R Padovani, Antonio C Cicogna, Marina P Okoshi, Katashi Okoshi
BACKGROUND: The association between echocardiographic structural parameters and body weight (BW) during rat development has been poorly addressed. We evaluated echocardiographic variables: left ventricular (LV) end-diastolic (LVDD) and end-systolic (LVSD) diameters, LV diastolic posterior wall thickness (PWT), left atrial diameter (LA), and aortic diameter (AO) in function of BW during development.Results/Materials and Methods: Male Wistar rats (n = 328, BW: 302-702 g) were retrospectively used to construct regression models and 95% confidence intervals relating to cardiac structural parameters and BW...
February 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212532/long-non-coding-rna-ptenp1-functions-as-a-cerna-to-modulate-pten-level-by-decoying-mir-106b-and-mir-93-in-gastric-cancer
#17
Rupeng Zhang, Yuenan Guo, Zhenchi Ma, Gang Ma, Qiang Xue, Fangxuan Li, Liren Liu
Recent studies have shown that competing endogenous RNAs (ceRNAs) play an important role in the regulation of gene expression, and participate in a wide range of biological processes, including carcinogenesis. Long non-coding RNA PTENP1, the pseudogene of PTEN tumor suppressor, has been reported to exert its tumor suppressive function via modulation of PTEN expression in many malignancies. However, whether a PTENP1~miRNA~PTEN ceRNA network exists and how it functions in gastric cancer (GC) remains elusive. In order to identify and characterize the PTENP1~miRNA~PTEN ceRNA network in GC, we first determined PTENP1 levels in clinical GC samples and found that PTENP1 and PTEN were concurrently downregulated in these samples...
February 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212530/transcriptome-analysis-reveals-non-identical-microrna-profiles-between-arterial-and-venous-plasma
#18
Wenjing Xu, Yuan Zhou, Guoheng Xu, Bin Geng, Qinghua Cui
Circulating microRNAs presented in venous plasma have been demonstrated as powerful biomarkers for the complex diseases like cancer. Nevertheless, those presented in arterial plasma remained largely unexplored. Here, using microarray technique, we compared microRNA expression profiles of the matched arterial and venous plasma samples from the same male rats. Though the microRNA profiles were largely similar, we identified 24 differentially expressed microRNAs, including 10 arterial highly expressed microRNAs and 14 venous highly expressed microRNAs...
February 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212528/the-crispr-cas9%C3%A2-system-efficiently-reverts-the-tumorigenic-ability-of-bcr-abl-in-vitro-and-in-a-xenograft-model-of-chronic-myeloid-leukemia
#19
Ignacio García-Tuñón, María Hernández-Sánchez, José Luis Ordoñez, Veronica Alonso-Pérez, Miguel Álamo-Quijada, Rocio Benito, Carmen Guerrero, Jesús María Hernández-Rivas, Manuel Sánchez-Martín
CRISPR/Cas9 technology was used to abrogate p210 oncoprotein expression in the Boff-p210 cell line, a pro-B line derived from interlukin-3-dependent Baf/3, that shows IL-3-independence arising from the constitutive expression of BCR-ABL p210. Using this approach, pools of Boff-p210-edited cells and single edited cell-derived clones were obtained and functionally studied in vitro. The loss of p210 expression in Boff-p210 cells resulted in the loss of ability to grow in the absence of IL-3, as the Baf/3 parental line, showing significantly increased apoptosis levels...
February 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28212525/ablation-of-ferroptosis-regulator-glutathione-peroxidase-4-in-forebrain-neurons-promotes-cognitive-impairment-and-neurodegeneration
#20
William Sealy Hambright, Rene Solano Fonseca, Liuji Chen, Ren Na, Qitao Ran
Synaptic loss and neuron death are the underlying cause of neurodegenerative diseases such as Alzheimer's disease (AD); however, the modalities of cell death in those diseases remain unclear. Ferroptosis, a newly identified oxidative cell death mechanism triggered by massive lipid peroxidation, is implicated in the degeneration of neurons populations such as spinal motor neurons and midbrain neurons. Here, we investigated whether neurons in forebrain regions (cerebral cortex and hippocampus) that are severely afflicted in AD patients might be vulnerable to ferroptosis...
February 1, 2017: Redox Biology
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