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https://www.readbyqxmd.com/read/28549347/the-roles-of-ing5-in-gliomas-a-good-marker-for-tumorigenesis-and-a-potential-target-for-gene-therapy
#1
Shuang Zhao, Zhi-Juan Zhao, Hao-Yu He, Ji-Cheng Wu, Xiao-Qing Ding, Lei Yang, Ning Jia, Zhi-Jie Li, Hua-Chuan Zheng
To elucidate the anti-tumor effects and molecular mechanisms of ING5 on glioma cells, we overexpressed it in U87 cells, and examined the phenotypes and their relevant molecules. It was found that ING5 overexpression suppressed proliferation, energy metabolism, migration, invasion, and induced G2/M arrest, apoptosis, dedifferentiation, senescence, mesenchymal- epithelial transition and chemoresistance to cisplatin, MG132, paclitaxel and SAHA in U87 cells. There appeared a lower expression of N-cadherin, Twist, Slug, Zeb1, Zeb2, Snail, Ac-H3, Ac-H4, Cdc2, Cdk4 and XIAP, but a higher expression of Claudin 1, Histones 3 and 4, p21, p53, Bax, β-catenin, PI3K, Akt, and p-Akt in ING5 transfectants...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549344/metformin-increases-chemo-sensitivity-via-gene-downregulation-encoding-dna-replication-proteins-in-5-fu-resistant-colorectal-cancer-cells
#2
Sung-Hee Kim, Soon-Chan Kim, Ja-Lok Ku
Metformin is most widely prescribed for type 2 diabetes. Recently, evidences have shown that metformin has anticancer effects on pancreatic-, colorectal-, ovarian-, and other cancers. Because metformin has less adverse effects and is inexpensive, it could be a useful chemo-therapeutic agent with anticancer effects. In this study, we demonstrated metformin inhibited by cell proliferation, cell migration ability, clonogenic ability, and cancer stem cell population. Metformin also induced cell cycle arrest in parental-(SNU-C5), and 5-Fu resistant-colorectal cancer cell line (SNU-C5_5FuR)...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549325/graphene-oxide-in-the-water-environment-could-affect-tetracycline-antibiotic-resistance
#3
Mei-Ting Guo, Guo-Sheng Zhang
In recent years, the influence of new materials like nanoparticles in the water environment on biological substances has been widely studied. Antibiotic resistance genes (ARGs) represent a new type of pollutant in the environment. Graphene oxide (GO), as a nano material, because of its unique structure, may have an impact on antibiotic resistance bacteria (ARB) and ARGs; however the research in this area is rarely reported. Therefore, this study mainly investigated the effects of GO on bacterial antibiotic resistance...
May 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28548943/intra-tumour-molecular-heterogeneity-of-clear-cell-renal-cell-carcinoma-reveals-the-diversity-of-the-response-to-targeted-therapies-using-patient-derived-xenograft-models
#4
Baoan Hong, Yong Yang, Sheng Guo, Shayiremu Duoerkun, Xiaohu Deng, Dawei Chen, Shijun Yu, Wubin Qian, Qixiang Li, Qing Li, Kan Gong, Ning Zhang
Inter- and intra-tumour molecular heterogeneity is increasingly recognized in clear cell renal cell carcinoma (ccRCC). It may partially explain the diversity of responses to targeted therapies and the various clinical outcomes. In this study, a 56-year-old male ccRCC patient with multiple metastases received radical nephrectomy and resection of the metastatic tumour in chest wall. The surgical specimens were implanted into nude mice to establish patient-derived xenograft (PDX) models with KI2367 model derived from the primary tumour and KI2368 model from the metastastic tumour...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548931/succinate-an-initiator-in-tumorigenesis-and-progression
#5
REVIEW
Ting Zhao, Xianmin Mu, Qiang You
As an intermediate metabolite of the tricarboxylic acid cycle in mitochondria, succinate is widely investigated for its role in metabolism. In recent years, an increasing number of studies have concentrated on the unanticipated role of succinate outside metabolism, acting as, for instance, an inflammatory signal or a carcinogenic initiator. Actually, succinate dehydrogenase gene mutations and abnormal succinate accumulation have been observed in a battery of hereditary and sporadic malignancies. In this review, we discuss the unexpected role of succinate and possible mechanisms that may contribute to its accumulation...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28548702/p16-loss-and-e2f-cell-cycle-deregulation-in-infant-posterior-fossa-ependymoma
#6
Seth C Lummus, Andrew M Donson, Katherine Gowan, Kenneth L Jones, Rajeev Vibhakar, Nicholas K Foreman, B K Kleinschmidt-DeMasters
BACKGROUND: Posterior fossa (PF) ependymomas (EPNs) in infants less than 1 year of age (iEPN-PF) have a poorer clinical outcome than EPNs in older children. While radiation therapy is the standard of care for the latter, it is withheld in infants to avoid neurotoxicity to immature brain. It is unknown whether the adverse outcome in iEPN-PFs is due to treatment differences or aggressive biology. We examined this question using molecular profiling. METHODS: Six anaplastic iEPN-PFs were subjected to transcriptomic analysis and FISH for p16 loss and gains of 1q, and compared with anaplastic PF EPNs from older children...
May 26, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28548675/inducible-bcl-2-gene-rna-interference-mediated-by-aptamer-integrated-hdv-ribozyme-switch
#7
Yuanyuan Zhang, Jine Wang, Hui Cheng, Na Sun, Min Liu, Zhengyan Wu, Renjun Pei
The regulation of RNA interference (RNAi) could be a powerful method for the study of temporal and dose dependent effects of gene expression. In this study, we designed the hepatitis delta virus (HDV) ribozyme with an embedded theophylline aptamer as the sensor domain and the pri-miRNA of endogenous gene Bcl-2 as the effector domain to engineer an RNAi-regulatory device in MCF-7 cells. The system allowed us to control gene expression by adding theophylline into the culture media in a dose dependent fashion...
May 26, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/28548657/the-endobacterium-of-an-arbuscular-mycorrhizal-fungus-modulates-the-expression-of-its-toxin-antitoxin-systems-during-the-life-cycle-of-its-host
#8
Alessandra Salvioli di Fossalunga, Justine Lipuma, Francesco Venice, Laurence Dupont, Paola Bonfante
Arbuscular mycorrhizal fungi (AMF) are widespread root symbionts that perform important ecological services, such as improving plant nutrient and water acquisition. Some AMF from the Gigasporaceae family host a population of endobacteria, Candidatus Glomeribacter gigasporarum (Cagg). The analysis of the Cagg genome identified six putative toxin-antitoxin modules (TAs), consisting of pairs of stable toxins and unstable antitoxins that affect diverse physiological functions. Sequence analysis suggested that these TA modules were acquired by horizontal transfer...
May 26, 2017: ISME Journal
https://www.readbyqxmd.com/read/28548246/comparison-of-three-different-types-of-scaffolds-preseeded-with-human-bone-marrow-mononuclear-cells-on-the-bone-healing-in-a-femoral-critical-size-defect-model-of-the-athymic-rat
#9
Maren Janko, Julian Sahm, Alexander Schaible, Jan C Brune, Marlene Bellen, Katrin Schröder, Caroline Seebach, Ingo Marzi, Dirk Henrich
Large bone defects often pose major difficulties in orthopedic surgery. The application of long term cultured stem cells combined with a scaffold lead to a significant improvement of bone healing in recent experiments but is strongly restricted by EU-law. Bone marrow mononuclear cells (BMC), however, can be isolated and transplanted within few hours and have been proven effective in experimental models of bone healing. The effectivity of the BMC supported therapy might be influenced by the type of scaffold...
May 26, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28548218/gene-therapy-for-atrial-fibrillation-in-heart-failure
#10
R Arora
Atrial fibrillation (AF) is the most common arrhythmia and a major cause of morbidity and mortality in an aging population. Unfortunately, current treatments for AF are suboptimal, in large part because the molecular mechanisms underlying AF are not well understood. Recent advances in our understanding of the AF disease state have led to the preclinical development of gene-based therapies that are targeted to key molecular mechanisms involved in the genesis and maintenance of AF.
May 26, 2017: Clinical Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28548125/next-generation-sequencing-based-molecular-characterization-of-primary-urinary-bladder-adenocarcinoma
#11
Somak Roy, Dinesh Pradhan, Wayne L Ernst, Stephanie Mercurio, Yana Najjar, Rahul Parikh, Anil V Parwani, Reetesh K Pai, Rajiv Dhir, Marina N Nikiforova
Primary bladder adenocarcinoma is a rare and aggressive tumor with poor clinical outcomes and no standard of care therapy. Molecular biology of this tumor is unknown due to the lack of comprehensive molecular profiling studies. The study aimed to identify genomic alterations of clinical and therapeutic significance using next-generation sequencing and compare genomic profile of primary bladder adenocarcinoma with that of high-grade urothelial carcinoma and colorectal adenocarcinoma. A cohort of 15 well-characterized primary bladder adenocarcinoma was subjected to targeted next-generation sequencing for the identification of mutations and copy-number changes in 51 cancer-related genes...
May 26, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28548108/drugging-the-pain-epigenome
#12
REVIEW
Ellen Niederberger, Eduard Resch, Michael J Parnham, Gerd Geisslinger
More than 20% of adults worldwide experience different types of chronic pain, which are frequently associated with several comorbidities and a decrease in quality of life. Several approved painkillers are available, but current analgesics are often hampered by insufficient efficacy and/or severe adverse effects. Consequently, novel strategies for safe, highly efficacious treatments are highly desirable, particularly for chronic pain. Epigenetic mechanisms such as DNA methylation, histone modifications and microRNAs (miRNAs) strongly affect the regulation of gene expression, potentially for long periods over years or even generations, and have been associated with pathophysiological pain...
May 26, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28548103/an-aavp-based-solid-phase-transducing-matrix-for-transgene-delivery-potential-for-translational-applications
#13
T L Smith, G R Souza, R L Sidman, W Arap, R Pasqualini
A hybrid vector of adeno-associated virus and phage (termed AAVP) has been introduced as a platform for systemic ligand-directed delivery of transgenes to tumors over the past decade. A series of studies have evaluated the AAVP platform for potential theranostic or purely therapeutic applications in several tumor models. Sufficient ligand-directed tumor targeting consistently resulted in specific molecular-genetic imaging and/or anti-tumor responses to 'suicide' transgene delivery. However, efforts to optimize transduction efficiency are still ongoing...
May 26, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28548042/new-insights-into-reovirus-evolution-implications-from-a-newly-characterized-mycoreovirus
#14
Lijiang Liu, Jiasen Cheng, Yanping Fu, Huiquan Liu, Daohong Jiang, Jiatao Xie
We performed molecular cloning and complete genome sequencing of a novel mycoreovirus, Sclerotinia sclerotiorumreovirus 1 (SsReV1), isolated from an isolate of the phytopathogenic fungus Sclerotinia sclerotiorum. SsReV1 has a genome of 28 055 bp and is composed of 11 double-stranded RNA segments. With a combination of unique molecular features, virion shape and composition, and phylogenetic analysis, SsReV1 is significantly distinct from all known reoviruses and defines a novel genus in the family Reoviridae...
May 26, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28547982/clinicopathological-study-of-5-cases-of-renal-cell-carcinoma-with-t-6-11-p21-q12
#15
Naoto Kuroda, Kenji Yorita, Naomi Sasaki, Akira Ishihara, Keiko Matsuura, Tsutomu Daa, Shintaro Mori, Aya Sasaki, Shuji Mikami, Kazuto Shigematsu, Yoji Nagashima
Renal cell carcinoma (RCC) with t(6;11)(p21;q12) has been incorporated into the recent WHO classification. We performed a clinicopathological study of 5 cases with such a tumor. The patients consisted of 4 males and 1 female. The age of patients ranged from 17 to 57 years with a mean age of 38.6 years. Tumor sizes ranged from 2.8 to 11 cm with a mean value of 6.5 cm. Despite immunotherapy and molecular-targeted therapy, one patient died of the disease 28 months after the surgery. Grossly, the cut surface of this tumor showed grayish white color in at least the focal area of all tumors...
2017: Polish Journal of Pathology: Official Journal of the Polish Society of Pathologists
https://www.readbyqxmd.com/read/28547571/clinical-presentations-and-molecular-studies-of-invasive-renal-epithelioid-angiomyolipoma
#16
Cheng-Keng Chuang, Hsin Chia Angela Lin, Han-Yu Tasi, Kun-Han Lee, Yuting Kao, Fukai Leo Chuang, Ying-Hsu Chang, Po-Hung Lin, Chung-Yi Liu, See-Tong Pang
PURPOSE: Epithelioid angiomyolipoma (EAML) is a rare variant of renal angiomyolipoma with malignant potential, and the cytogenetic and clinical behavior of EAML remains a challenging issue. METHODS: We retrospectively analyze the clinical courses of five EAML, the use of everolimus on metastatic EAML, and next-generation sequencing (NGS) and polymerase chain reaction (PCR) studies to investigate the gene mutation of TSC and the impact of PI3K/Akt/mTOR signaling pathway in metastatic EAML...
May 25, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28547526/rab21-a-novel-ps1-interactor-regulates-%C3%AE-secretase-activity-via-ps1-subcellular-distribution
#17
Zhenzhen Sun, Yujie Xie, Yintong Chen, Qinghu Yang, Zhenzhen Quan, Rongji Dai, Hong Qing
γ-Secretase has been a therapeutical target for its key role in cleaving APP to generate β-amyloid (Aβ), the primary constituents of senile plaques and a hallmark of Alzheimer's disease (AD) pathology. Recently, γ-secretase-associating proteins showed promising role in specifically modulating APP processing while sparing Notch signaling; however, the underlying mechanism is still unclear. A co-immunoprecipitation (Co-IP) coupled with mass spectrometry proteomic assay for Presenilin1 (PS1, the catalytic subunit of γ-secretase) was firstly conducted to find more γ-secretase-associating proteins...
May 25, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28546965/ribonuclease-from-bacillus-acts-as-an-antiviral-agent-against-negative-and-positive-sense-single-stranded-human-respiratory-rna-viruses
#18
Raihan Shah Mahmud, Christin Müller, Yulia Romanova, Ahmed Mostafa, Vera Ulyanova, Stephan Pleschka, Olga Ilinskaya
Bacillus pumilus ribonuclease (binase) was shown to be a promising antiviral agent in animal models and cell cultures. However, the mode of its antiviral action remains unknown. To assess the binase effect on intracellular viral RNA we have selected single stranded negative- and positive-sense RNA viruses, influenza virus, and rhinovirus, respectively, which annually cause respiratory illnesses and are characterized by high contagious nature, mutation rate, and antigen variability. We have shown that binase exerts an antiviral effect on both viruses at the same concentration, which does not alter the spectrum of A549 cellular proteins and expression of housekeeping genes...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28546758/distinct-implications-of-different-brca-mutations-efficacy-of-cytotoxic-chemotherapy-parp-inhibition-and-clinical-outcome-in-ovarian-cancer
#19
REVIEW
Robert L Hollis, Michael Churchman, Charlie Gourley
Approximately a fifth of ovarian carcinoma (OC) is associated with inherited germline mutations, most commonly in the DNA repair genes BRCA1 or BRCA2 (BRCA). BRCA1- and BRCA2-associated OCs have historically been described as a single subgroup of OC that displays a distinct set of characteristics termed the "BRCAness" phenotype. The hallmarks of this phenotype are superior clinical outcome and hypersensitivity to platinum-based chemotherapy and poly-(ADP-ribose) polymerase (PARP) inhibitors. However, growing evidence suggests that BRCA1- and BRCA2-associated OCs display distinct characteristics, most notably in long-term patient survival...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28546520/-omic-approach-in-non-smoker-female-with-lung-squamous-cell-carcinoma-pinpoints-to-germline-susceptibility-and-personalized-medicine
#20
Margherita Baldassarri, Chiara Fallerini, Francesco Cetta, Marco Ghisalberti, Cristiana Bellan, Simone Furini, Ottavia Spiga, Sergio Crispino, Giuseppe Gotti, Francesca Ariani, Piero Paladini, Alessandra Renieri, Elisa Frullanti
Purpose: Lung cancer is strongly associated to tobacco smoking. However, global statistics estimate that in females the proportion of lung cancer cases that is unrelated to tobacco smoking reaches fifty percent, making questionable the etiology of the disease. Materials and Methods: A never-smoker female with primary EGFR/KRAS/ALK-negative squamous cell carcinoma of the lung and their normal sibs were subjected to a novel integrative "omic" approach using a pedigree-based model for discovering genetic factors leading to cancer in the absence of well-known environmental trigger...
May 26, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
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