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https://www.readbyqxmd.com/read/29149911/the-analysis-of-novel-microrna-mimic-sequences-in-cancer-cells-reveals-lack-of-specificity-in-stem-loop-rt-qpcr-based-microrna-detection
#1
Patrick Winata, Marissa Williams, Eileen McGowan, Najah Nassif, Nico van Zandwijk, Glen Reid
OBJECTIVE: MicroRNAs are frequently downregulated in cancer, and restoring expression has tumour suppressive activity in tumour cells. Our recent phase I clinical trial investigated microRNA-based therapy in patients with malignant pleural mesothelioma. Treatment with TargomiRs, microRNA mimics with novel sequence packaged in EGFR antibody-targeted bacterial minicells, revealed clear signs of clinical activity. In order to detect delivery of microRNA mimics to tumour cells in future clinical trials, we tested hydrolysis probe-based assays specific for the sequence of the novel mimics in transfected mesothelioma cell lines using RT-qPCR...
November 17, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29141252/musashi1-promotes-non-small-cell-lung-carcinoma-malignancy-and-chemoresistance-via-activating-the-akt-signaling-pathway
#2
Yaoguo Lang, Xianglong Kong, Changjun He, Fengjiao Wang, Benkun Liu, Shibo Zhang, Jinfeng Ning, Kaibin Zhu, Shidong Xu
BACKGROUND/AIMS: Lung cancer is one of the leading causes for cancer mortality. The poor therapeutic outcome of non-small cell lung carcinoma (NSCLC) is mainly due to late diagnosis and chemoresistance. In this study, we investigated the role of Musashi1 (MSI1) in NSCLC malignancy and chemoresistance. METHODS: Colony formation, MTT, glucose uptake and lactate production assays were employed to study lung cancer cell malignancy and chemoresistance. RT-PCR and Western blotting were performed to detect mRNA and protein expressions of genes...
November 15, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29137348/reverse-phase-protein-array-rppa-combined-with-computational-analysis-to-unravel-relevant-prognostic-factors-in-non-small-cell-lung-cancer-nsclc-a-pilot-study
#3
Vienna Ludovini, Rita Chiari, Lorenzo Tomassoni, Chiara Antonini, Elisa Baldelli, Sara Baglivo, Annamaria Siggillino, Francesca Romana Tofanetti, Guido Bellezza, K Alex Hodge, Emanuel Petricoin, Mariaelena Pierobon, Lucio Crinò, Fortunato Bianconi
In this work high throughput technology and computational analysis were used to study two stage IV lung adenocarcinoma patients treated with standard chemotherapy with markedly different survival (128 months vs 6 months, respectively) and whose tumor samples exhibit a dissimilar protein activation pattern of the signal transduction. Tumor samples of the two patients were subjected to Reverse Phase Protein Microarray (RPPA) analysis to explore the expression/activation levels of 51 signaling proteins. We selected the most divergent proteins based on the ratio of their RPPA values in the two patients with short (s-OS) and long (l-OS) overall survival (OS) and tested them against a EGFR-IGF1R mathematical model...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29132432/ac-93253-iodide-a-novel-src-inhibitor-suppresses-nsclc-progression-by-modulating-multiple-src-related-signaling-pathways
#4
Yi-Hua Lai, Sih-Yin Lin, Yu-Shan Wu, Huei-Wen Chen, Jeremy J W Chen
BACKGROUND: The tyrosine kinase Src is involved in the progression of many cancers. Moreover, inhibiting Src activity has been shown to obstruct several signaling pathways regulated by the EGFR. Thus, Src is a valuable target molecule in drug development. The purpose of this study was to identify compounds that directly or indirectly modulate Src to suppress lung cancer cell growth and motility and to investigate the molecular mechanisms underlying the effects of these compounds. METHODS: Human non-small cell lung cancer (NSCLC) cell lines (PC9, PC9/gef, A549, and H1975) with different EGFR statuses were tested by cytotoxicity and proliferation assays after AC-93253 iodide treatment...
November 13, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/29128955/right-brodmann-area-18-predicts-tremor-arrest-after-vim-radiosurgery-a-voxel-based-morphometry-study
#5
Constantin Tuleasca, Tatiana Witjas, Dimitri Van de Ville, Elena Najdenovska, Antoine Verger, Nadine Girard, Jerome Champoudry, Jean-Philippe Thiran, Meritxell Bach Cuadra, Marc Levivier, Eric Guedj, Jean Régis
INTRODUCTION: Drug-resistant essential tremor (ET) can benefit from open standard stereotactic procedures, such as deep-brain stimulation or radiofrequency thalamotomy. Non-surgical candidates can be offered either high-focused ultrasound (HIFU) or radiosurgery (RS). All procedures aim to target the same thalamic site, the ventro-intermediate nucleus (e.g., Vim). The mechanisms by which tremor stops after Vim RS or HIFU remain unknown. We used voxel-based morphometry (VBM) on pretherapeutic neuroimaging data and assessed which anatomical site would best correlate with tremor arrest 1 year after Vim RS...
November 11, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29124305/dummy-surface-molecularly-imprinted-polymers-as-a-sorbent-of-micro-solid-phase-extraction-combined-with-dispersive-liquid-liquid-microextraction-for-determination-of-five-2-phenylpropionic-acid-nsaids-in-aquatic-environmental-samples
#6
Ping Guo, Xucan Yuan, Jingjing Zhang, Binjie Wang, Xiaoyang Sun, Xiaohui Chen, Longshan Zhao
A highly binding dummy template surface of molecularly imprinted polymers (MWNTs-MIPs) was synthesized on multi-walled carbon nanotubes surface using 2-phenylpropionic acid as dummy template, 4-vinylpyridine as the functional monomer, ethylene glycol dimethacrylate as the cross-linker, and DMF as porogen by precipitation polymerization method. MIPs were characterized by FT-IR spectroscopy, scanning electron microscope, thermo-gravimetric analysis, and nitrogen adsorption-desorption experiment. Adsorption and selectivity experiments of MIPs and non-imprinted polymers (NIPs) verified that the MIPs had a good selectivity and adsorption properties for five 2-phenylpropionic acid nonsteroidal anti-inflammatory drugs (NSAIDs)...
November 9, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29123632/management-of-post-endodontic-retreatment-pain-with-low-level-laser-therapy
#7
Mohammad Asnaashari, Hengameh Ashraf, Amir Houshang Daghayeghi, Seyed Masoud Mojahedi, Saranaz Azari-Marhabi
Introduction: Pharmacotherapy with analgesics and non-steroidal anti-inflammatory drugs has been traditionally used to relief post-operative pain of endodontic treatments. However, due to the side effects reported for these drugs, some efforts have been made to decrease the post-operative pain of the endodontic treatments through laser irradiation. The present study aimed to evaluate the effects of low level laser therapy (LLLT) on the reduction of pain after root canal retreatment. Methods: In this clinical trial, 61 patients requiring endodontic retreatments in posterior teeth were selected...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29123412/lncrna-meg3-enhances-cisplatin-sensitivity-in-non-small-cell-lung-cancer-by-regulating-mir-21-5p-sox7-axis
#8
Pei Wang, Dong Chen, Hongbing Ma, Yong Li
Background: Long noncoding RNAs (lncRNAs) have been revealed to play essential role in drug resistance of multiple cancers. LncRNA MEG3 was previously reported to be associated with cisplatin (DDP) resistance in non-small cell lung cancer (NSCLC) cells. However, the molecular mechanism of MEG3 affecting DDP resistance in NSCLC remains to be further illustrated. In this study, we attempted to discuss whether MEG3 also could function as a competing endogenous RNA to regulate DDP resistance in NSCLC...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29120604/molecular-determinants-for-substrate-interactions-with-the-glycine-transporter-glyt2
#9
Jane E Carland, Michael Thomas, Shannon N Mostyn, Nandhitha Subramanian, Megan Louise O'Mara, Renae M Ryan, Robert J Vandenberg
Transporters in the SLC6 family play key roles in regulating neurotransmission and are the targets for a wide range of therapeutics. Important insights into the transport mechanisms and the specificity of drug interactions of SLC6 transporters have been obtained from the crystal structures of a bacterial homolog of the family, LeuTAa, and more recently the Drosophila dopamine transporter and the human serotonin transporter. However, there is disputed evidence that the bacterial leucine transporter, LeuTAa, contains two substrate binding sites that work cooperatively in the mechanism of transport, with the binding of a second substrate being required for the release of the substrate from the primary site...
November 9, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29116073/-differential-expression-of-an-ensemble-of-the-key-genes-involved-in-cell-cycle-regulation-in-lung-cancer
#10
G S Krasnov, G A Puzanov, A V Kudryavtseva, A A Dmitriev, A D Beniaminov, T T Kondratieva, V N Senchenko
Targeted cancer therapy directed at individual targets is often accompanied by the rapid development of drug resistance. The development of a new generation of antitumor drugs involves the search for many targets simultaneously to block or, conversely, restore their activity. In this regard, simultaneous analysis of gene expression in a complex network of interactions, primarily cell cycle control elements, is relevant for the search of specific molecular markers for the differential diagnosis of adenocarcinoma (ADC) and squamous cell lung cancer (SCC), as well as new targets for therapy...
September 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/29115578/characterization-of-prostate-cancer-cell-progression-in-zebrafish-xenograft-model
#11
Wei Xu, Brittany A Foster, Mackenzie Richards, Kenneth R Bondioli, Girish Shah, Christopher C Green
Early diagnosis of prostate cancer (PCa) is critical for the application of efficient treatment to PCa patients. However, the majority of PCas remains indolent from several months to several years before malignancy. Current diagnosis methods have limitations in their reliability and are inefficient in time cost. Thus, an efficient in vivo PCa cell xenograft model is highly desired for diagnostic studies in PCas. In the present study we present a standardized procedure to create a PCa cell xenograft model using zebrafish (Danio rerio) as the host...
November 6, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29115423/apoptosis-in-human-liver-carcinoma-caused-by-gold-nanoparticles-in-combination-with-carvedilol-is-mediated-via-modulation-of-mapk-akt-mtor-pathway-and-egfr-faad-proteins
#12
Raimundo F De Araújo, Jonas B Pessoa, Luis J Cruz, Alan B Chan, Emílio De Castro Miguel, Rômulo S Cavalcante, Gerly Anne C Brito, Heloiza Fernada O Silva, Luiz H S Gasparotto, Paulo M M Guedes, Aurigena A Araújo
In cancers, apoptosis signaling pathways and cell survival and growth pathways responsible for resistance to conventional treatments, such as Pi3K/Akt/mTOR and mitogen-activated protein kinase (MAPK) become dysregulated. Recently, alternative treatments to promote tumor cell death have become important. The present study reports on the antitumor and cytoprotective action of gold nanoparticles (GNPs) and carvedilol in combination and in isolated application. Apoptosis was analyzed by FITC/propidium iodide staining flow cytometry; caspase-3, caspase-8, Bcl-2 and MAPK/ERK activity by immunofluorescence microscopy; gene expression of proteins related to cell death as Akt, mTOR, EGFR, MDR1, survivin, FADD and Apaf, by the real-time PCR; and western blot analysis for MAPK/ERK, Akt and mTOR...
October 27, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/29113313/whole-exome-analysis-in-osteosarcoma-to-identify-a-personalized-therapy
#13
Caterina Chiappetta, Massimiliano Mancini, Francesca Lessi, Paolo Aretini, Veronica De Gregorio, Chiara Puggioni, Raffaella Carletti, Vincenzo Petrozza, Prospero Civita, Sara Franceschi, Antonio G Naccarato, Carlo Della Rocca, Chiara M Mazzanti, Claudio Di Cristofano
Osteosarcoma is the most common pediatric primary non-hematopoietic bone tumor. Survival of these young patients is related to the response to chemotherapy and development of metastases. Despite many advances in cancer research, chemotherapy regimens for osteosarcoma are still based on non-selective cytotoxic drugs. It is essential to investigate new specific molecular therapies for osteosarcoma to increase the survival rate of these patients. We performed exomic sequence analyses of 8 diagnostic biopsies of patients with conventional high grade osteosarcoma to advance our understanding of their genetic underpinnings and to correlate the genetic alteration with the clinical and pathological features of each patient to identify a personalized therapy...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29113252/microrna-25-contributes-to-cisplatin-resistance-in-gastric-cancer-cells-by-inhibiting-forkhead-box-o3a
#14
Jingbo He, Huixiong Qi, Fang Chen, Chuanhua Cao
Gastric cancer (GC) is a common type of malignancy worldwide, and chemotherapeutic resistance accounts for the majority of the failures in clinical treatment. MicroRNAs (miRs) are a class of small non-coding RNAs, which serve essential roles in GC. The present study aimed to investigate the potential role of miR-25 in the cisplatin sensitivity of GC cells. The expression level of miR-25 was significantly upregulated in the cisplatin-resistant GC cell line SGC-7901/DDP compared with the SGC-7901 parental cell line...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29111708/group-additivity-in-ligand-binding-affinity-an-alternative-approach-to-ligand-efficiency
#15
Charles H Reynolds, Ryan C Reynolds
Group additivity is a concept that has been successfully applied to a variety of thermochemical and kinetic properties. This includes drug discovery, where functional group additivity is often assumed in ligand binding. Ligand efficiency can be recast as a special case of group additivity where ΔG/HA is the group equivalent (HA is the number of non-hydrogen atoms in a ligand). Analysis of a large data set of protein-ligand binding affinities (Ki) for diverse targets shows that in general ligand binding is distinctly nonlinear...
November 16, 2017: Journal of Chemical Information and Modeling
https://www.readbyqxmd.com/read/29109795/the-use-of-pet-imaging-for-prognostic-integrin-%C3%AE-2%C3%AE-1-phenotyping-to-detect-non-small-cell-lung-cancer-and-monitor-drug-resistance-responses
#16
Chiun-Wei Huang, Wen-Chuan Hsieh, Shih-Ting Hsu, Yi-Wen Lin, Yi-Hsiu Chung, Wen-Chi Chang, Han Chiu, Yun Han Lin, Chung-Pu Wu, Tzu-Chen Yen, Feng-Ting Huang
PURPOSE: Growing evidence has demonstrated that aberrant expression of integrin α2β1 might contribute to the invasion, metastasis and drug resistance of non-small cell lung cancer (NSCLC). Thus, the integrin α2β1 targeting (68)Ga-DOTA-A2B1 tracer was validated in NSCLC in contrast to accumulation of the clinically used (18)F-FDG PET tracer to see if (68)Ga-DOTA-A2B1-PET imaging can offer a valuable and critical diagnostic imaging criterion for the identification of phenotypes of aggressive lung cancer...
2017: Theranostics
https://www.readbyqxmd.com/read/29109091/transcriptomic-profiling-of-mda-mb-231-cells-exposed-to-boswellia-serrata-and-3-o-acetyl-b-boswellic-acid-er-upr-mediated-programmed-cell-death
#17
REVIEW
Elizabeth A Mazzio, Charles A Lewis, Karam F A Soliman
BACKGROUND/AIM: Triple-negative breast cancer (TNBC) is characterized by the absence of hormone receptors (estrogen, progesterone and human epidermal growth factor receptor-2) and a relatively poor prognosis due to inefficacy of hormone receptor-based chemotherapies. It is imperative that we continue to explore natural products with potential to impede growth and metastasis of TNBC. In this study, we screened over 1,000 natural products for capacity to induce cell death in TNBC (MDA-MB -231) cells...
November 2017: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/29108281/frizzled-8-promotes-the-cell-proliferation-and-metastasis-of-renal-cell-carcinoma
#18
Qiwei Yang, Ye Wang, Xiuwu Pan, Jianqing Ye, Sishun Gan, Fajun Qu, Lu Chen, Chuanmin Chu, Yi Gao, Xingang Cui
Recent reports have shown a rapid rise in the incidence of renal cell carcinoma (RCC), and Wnt (Wingless-related integration site) signaling pathway is important in RCC. Frizzled 8 (FZD8) is a member of Frizzled (FZD) receptor family which could activate canonical or non-canonical Wnt/β-catenin pathways. Nevertheless, the role of FZD8 in RCC is poorly investigated. The immunohistochemical analysis showed high expression of FZD8 in RCC tissues compared with peri-tumor tissues. FZD8 knockdown decreased the ability of proliferation and metastasis of RCC cells...
October 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/29108005/identification-of-genes-and-critical-control-proteins-associated-with-inflammatory-breast-cancer-using-network-controllability
#19
Ryouji Wakai, Masayuki Ishitsuka, Toshihiko Kishimoto, Tomoshiro Ochiai, Jose C Nacher
One of the most aggressive forms of breast cancer is inflammatory breast cancer (IBC), whose lack of tumour mass also makes a prompt diagnosis difficult. Moreover, genomic differences between common breast cancers and IBC have not been completely assessed, thus substantially limiting the identification of biomarkers unique to IBC. Here, we developed a novel statistical analysis of gene expression profiles corresponding to microdissected IBC, non-IBC (nIBC) and normal samples that enabled us to identify a set of genes significantly associated with a specific disease state...
2017: PloS One
https://www.readbyqxmd.com/read/29107511/red-blood-cells-distribution-width-as-a-potential-prognostic-biomarker-in-patients-with-pulmonary-arterial-hypertension-and-chronic-thromboembolic-pulmonary-hypertension
#20
Anna Smukowska-Gorynia, Iga Tomaszewska, Katarzyna Malaczynska-Rajpold, Justyna Marcinkowska, Anna Komosa, Magdalena Janus, Anna Olasinska-Wisniewska, Sylwia Slawek, Aleksander Araszkiewicz, Stanislaw Jankiewicz, Tatiana Mularek-Kubzdela
BACKGROUND: Red blood cells distribution width (RDW) predicts survival in cardiovascular diseases. Little is known about the variability of RDW level over time among patients with pulmonary arterial hypertension (PAH) and chronic thromboembolic pulmonary hypertension (CTEPH). To our knowledge, RDW has never been analysed as a marker of response to specific treatment. MATERIALS AND METHODS: We retrospectively analysed 77 patients for: i) RDW measured during the last hospitalisation before death or during the last follow-up (RDWlast); ii) mean RDW from all hospitalisations during the entire follow-up of the patient (RDWmean); iii) maximum RDW of all hospitalisations of each patient (RDWmax)...
August 24, 2017: Heart, Lung & Circulation
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