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https://www.readbyqxmd.com/read/29018329/cddo-and-atra-instigate-differentiation-of-imr32-human-neuroblastoma-cells
#1
Namrata Chaudhari, Priti Talwar, Christian Lefebvre D'hellencourt, Palaniyandi Ravanan
Neuroblastoma is the most common solid extra cranial tumor in infants. Improving the clinical outcome of children with aggressive tumors undergoing one of the multiple treatment options has been a major concern. Differentiating neuroblastoma cells holds promise in inducing tumor growth arrest and treating minimal residual disease. In this study, we investigated the effect of partial PPARγ agonist 2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oic acid (CDDO) on human neuroblastoma IMR32 cells. Our results demonstrate that treatment with low concentration of CDDO and particularly in combination with all trans retinoic acid (ATRA) induced neurite outgrowth, increased the percentage of more than two neurites bearing cells, and decreased viability in IMR32 cells...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28981455/a-unique-tgfb1-driven-genomic-program-links-astrocytosis-low-grade-inflammation-and-partial-demyelination-in-spinal-cord-periplaques-from-progressive-multiple-sclerosis-patients
#2
Serge Nataf, Marc Barritault, Laurent Pays
We previously reported that, in multiple sclerosis (MS) patients with a progressive form of the disease, spinal cord periplaques extend distance away from plaque borders and are characterized by the co-occurrence of partial demyelination, astrocytosis and low-grade inflammation. However, transcriptomic analyses did not allow providing a comprehensive view of molecular events in astrocytes vs. oligodendrocytes. Here, we re-assessed our transcriptomic data and performed co-expression analyses to characterize astrocyte vs...
October 5, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28906492/ndrg1-inhibition-sensitizes-osteosarcoma-cells-to-combretastatin-a-4-through-targeting-autophagy
#3
Hongsheng Wang, Wen Li, Jing Xu, Tao Zhang, Dongqing Zuo, Zifei Zhou, Binhui Lin, Gangyang Wang, Zhuoying Wang, Wei Sun, Mengxiong Sun, Shimin Chang, Zhengdong Cai, Yingqi Hua
Combretastatin A-4 (CA-4), a tubulin-depolymerizing agent, shows promising antitumor efficacy and has been under several clinical trials in solid tumors for 10 years. Autophagy has an important pro-survival role in cancer therapy, thus targeting autophagy may improve the efficacy of antitumor agents. N-myc downstream-regulated gene 1 (NDRG1) is a significant stress regulatory gene, which mediates cell survival and chemoresistance. Here we reported that CA-4 could induce cell-protective autophagy, and combination treatment of CA-4 and autophagy inhibitor chloroquine (CQ) exerted synergistic cytotoxic effect on human osteosarcoma (OS) cells...
September 14, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28902413/frequent-genes-in-rare-diseases-panel-based-next-generation-sequencing-to-disclose-causal-mutations-in-hereditary-neuropathies
#4
Maike F Dohrn, Nicola Glöckle, Lejla Mulahasanovic, Corina Heller, Julia Mohr, Christine Bauer, Erik Riesch, Andrea Becker, Florian Battke, Konstanze Hörtnagel, Thorsten Hornemann, Saranya Suriyanarayanan, Markus Blankenburg, Jörg B Schulz, Kristl G Claeys, Burkhard Gess, Istvan Katona, Andreas Ferbert, Debora Vittore, Alexander Grimm, Stefan Wolking, Ludger Schöls, Holger Lerche, G Christoph Korenke, Dirk Fischer, Bertold Schrank, Urania Kotzaeridou, Gerhard Kurlemann, Bianca Dräger, Anja Schirmacher, Peter Young, Beate Schlotter-Weigel, Saskia Biskup
Hereditary neuropathies comprise a wide variety of chronic diseases associated to more than 80 genes identified to date. We herein examined 612 index patients with either a Charcot-Marie-Tooth phenotype, hereditary sensory neuropathy, familial amyloid neuropathy, or small fiber neuropathy using a customized multigene panel based on the next generation sequencing (NGS) technique. In 121 cases (19.8%), we identified at least one putative pathogenic mutation. Out of these, 54.4% showed an autosomal dominant, 33...
September 13, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28867478/hemidesmosomal-linker-proteins-regulate-cell-motility-invasion-and-tumorigenicity-in-oral-squamous-cell-carcinoma-derived-cells
#5
Pratik Rajeev Chaudhari, Silvania Emlit Charles, Zinia Charlotte D'Souza, Milind Murlidhar Vaidya
BPAG1e and Plectin are hemidesmosomal linker proteins which anchor intermediate filament proteins to the cell surface through β4 integrin. Recent reports indicate that these proteins play a role in various cellular processes apart from their known anchoring function. However, the available literature is inconsistent. Further, the previous study from our laboratory suggested that Keratin8/18 pair promotes cell motility and tumor progression by deregulating β4 integrin signaling in oral squamous cell carcinoma (OSCC) derived cells...
August 31, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28865129/effects-of-long-term-hypoxia-in-human-chondrosarcoma-cells
#6
J Piltti, J Bygdell, C J Qu, M J Lammi
The cell-based therapies could be potential methods to treat damaged cartilage tissues. Instead of native hyaline cartilage, the current therapies generate mainly weaker fibrocartilage-type of repair tissue. A correct microenvironment influences the cellular phenotype, and together with external factors it can be used, e.g., to aid the differentiation of mesenchymal stem cells to defined types of differentiated adult cells. In this study, we investigated the effect of long-term exposure to 5% low oxygen atmosphere on human chondrosarcoma HCS-2/8 cells...
September 2, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28861610/inhibitors-of-the-proteasome-stimulate-the-epithelial-sodium-channel-enac-through-sgk1-and-mimic-the-effect-of-aldosterone
#7
Morag K Mansley, Christoph Korbmacher, Marko Bertog
The epithelial sodium channel (ENaC) marks the tightly regulated, rate-limiting step of sodium re-absorption in the aldosterone-sensitive distal nephron (ASDN). Stimulation of ENaC activity by aldosterone involves the serum and glucocorticoid-induced kinase 1 (SGK1) and is mediated via complex mechanisms including inhibition of channel retrieval. Retrieved channels may be recycled or degraded, e.g. by the proteasomal pathway. The aim of the present study was to investigate whether inhibitors of the proteasome affect ENaC activity and surface expression, and to explore a possible involvement of SGK1...
August 31, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28803608/identification-of-simvastatin-regulated-targets-associated-with-jnk-activation-in-du145-human-prostate-cancer-cell-death-signaling
#8
Eun Joo Jung, Ky Hyun Chung, Choong Won Kim
The results of this study show that c-Jun N-terminal kinase (JNK) activation was associated with the enhancement of docetaxel-induced cytotoxicity by simvastatin in DU145 human prostate cancer cells. To better understand the basic molecular mechanisms, we investigated simvastatin-regulated targets during simvastatin-induced cell death in DU145 cells using two-dimensional (2D) proteomic analysis. Thus, vimentin, Ras-related protein Rab-1B (RAB1B), cytoplasmic hydroxymethylglutaryl-CoA synthase (cHMGCS), thioredoxin domain-containing protein 5 (TXNDC5), heterogeneous nuclear ribonucleoprotein K (hnRNP K), N-myc downstream-regulated gene 1 (NDRG1), and isopentenyl-diphosphate Delta-isomerase 1 (IDI1) protein spots were identified as simvastatin-regulated targets involved in DU145 cell death signaling pathways...
September 2017: BMB Reports
https://www.readbyqxmd.com/read/28776325/identification-and-functional-characterization-of-two-missense-mutations-in-ndrg1-associated-with-charcot-marie-tooth-disease-type-4d
#9
Li-Xi Li, Gong-Lu Liu, Zhi-Jun Liu, Cong Lu, Zhi-Ying Wu
Charcot-Marie-Tooth disease type 4D (CMT4D) is an autosomal-recessive demyelinating form of CMT characterized by a severe distal motor and sensory neuropathy. NDRG1 is the causative gene for CMT4D. To date, only four mutations in NDRG1 -c.442C>T (p.Arg148*), c.739delC (p.His247Thrfs*74), c.538-1G>A, and duplication of exons 6-8-have been described in CMT4D patients. Here, using targeted next-generation sequencing examination, we identified for the first time two homozygous missense variants in NDRG1, c...
November 2017: Human Mutation
https://www.readbyqxmd.com/read/28775290/ndrg1-promotes-adipocyte-differentiation-and-sustains-their-function
#10
Kai Cai, Rabih El-Merahbi, Mona Loeffler, Alexander E Mayer, Grzegorz Sumara
Adipocytes play a central role in maintaining metabolic homeostasis in the body. Differentiation of adipocyte precursor cells requires the transcriptional activity of peroxisome proliferator-activated receptor-γ (Pparγ) and CCAAT/enhancer binding proteins (C/Ebps). Transcriptional activity is regulated by signaling modules activated by a plethora of hormones and nutrients. Mechanistic target of rapamacin complexes (mTORC) 1 and 2 are central for the coordination of hormonal and nutritional inputs in cells and are essential for adipogenesis...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28775238/n-myc-downstream-regulated-gene-1-promotes-apoptosis-in-colorectal-cancer-via-up-regulating-death-receptor-4
#11
Xian Zhang, Bo Feng, Fan Zhu, Chaoran Yu, Jiaoyang Lu, Meng Pan, Zirui He, Xiongzhi Wangpu, Jing Sun, Xiao Yang
The aim of this study was to evaluate the clinical significance of N-myc downstream-regulated gene 1 (NDRG1) in colorectal cancer (CRC) patients and to explore the mechanisms governing the role of NDRG1 in apoptosis of CRC cells. In the current study, we found that NDRG1 was a prognostic marker of CRC patients. Moreover, NDRG1 expression negatively correlated to tumor size and clinical TNM stage, suggesting that NDRG1 might act as a tumor suppressor by inhibiting proliferation or inducing apoptosis in CRC. Consistently, substantial apoptosis was observed in vitro and in vivo in the presence of NDRG1...
July 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28701735/quantitative-proteomics-reveal-the-anti-tumour-mechanism-of-the-carbohydrate-recognition-domain-of-galectin-3-in-hepatocellular-carcinoma
#12
Mingchao Wang, Fang Tian, Wantao Ying, Xiaohong Qian
Hepatocellular carcinoma (HCC) is a serious threat to human health. The carbohydrate recognition domain of Galectin-3 (Gal3C) has been reported to be an anti-tumour molecule. In this study, we aim to explore effects of Gal3C in HCC and its possible molecular mechanism with quantitative proteomics approach. We found that rGal3C stimulation could inhibit cell viability, migration and invasion of HepG2. After rGal3C stimulating, 190 proteins were differentially expressed. Eighty up-regulated proteins located mainly in extracellular exosome and involved in cell adhesion and metabolism, and 110 down-regulated proteins located in mitochondria and extracellular exosome, and related to processes of metabolism and oxidation-reduction...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615452/interplay-of-the-iron-regulated-metastasis-suppressor-ndrg1-with-epidermal-growth-factor-receptor-egfr-and-oncogenic-signaling
#13
REVIEW
Sharleen V Menezes, Sumit Sahni, Zaklina Kovacevic, Des R Richardson
The iron-regulated metastasis suppressor N-myc downstream-regulated gene 1 (NDRG1) has been shown to inhibit numerous oncogenic signaling pathways in cancer cells. Recent findings have demonstrated that NDRG1 inhibits the ErbB family of receptors, which function as key inducers of carcinogenesis. NDRG1 attenuates ErbB signaling by inhibiting formation of epidermal growth factor receptor (EGFR)/human epidermal growth factor receptor 2 (HER2) and HER2/HER3 heterodimers and by down-regulating EGFR via a mechanism involving its degradation...
August 4, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28545025/oncogenic-mnk-signalling-regulates-the-metastasis-suppressor-ndrg1
#14
Shuye Tian, Xuemin Wang, Christopher G Proud
The protein N-myc down-regulated gene 1 (NDRG1) represses tumour metastasis. It is phosphorylated at several sites by serum and glucocorticoid-regulated kinase 1 (SGK1). Here we show that NDRG1 is also regulated by the oncogenic MAP kinase-interacting kinase (MNK) pathway, a target for cancer therapy.Inhibiting MNKs increases the expression of NDRG1 protein and mRNA in breast cancer cells. MNK inhibition also decreases the phosphorylation of NDRG1. Phosphorylation of NDRG1 is reduced in cells lacking MNK1, but not MNK2-knockout cells, indicating that NDRG1 phosphorylation is a specific target for MNK1...
July 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28537875/n-myc-downstream-regulated-gene-1-promotes-oxaliplatin-triggered-apoptosis-in-colorectal-cancer-cells-via-enhancing-the-ubiquitination-of-bcl-2
#15
Xiao Yang, Fan Zhu, Chaoran Yu, Jiaoyang Lu, Luyang Zhang, Yanfeng Lv, Jing Sun, Minhua Zheng
N-myc downstream-regulated gene1 (NDRG1) has been identified as a potent tumor suppressor gene. The molecular mechanisms of anti-tumor activity of NDRG1 involve its suppressive effects on a variety of tumorigenic signaling pathways. The purpose of this study was to investigate the role of NDRG1 in the apoptosis of colorectal cancer (CRC) cells. We first collected the clinical data of locally advanced rectal cancer (LARC) patients receiving oxaliplatin-based neoadjuvant chemotherapy in our medical center. Correlation analysis revealed that NDRG1 positively associated with the downstaging rates and prognosis of patients...
July 18, 2017: Oncotarget
https://www.readbyqxmd.com/read/28521460/n-myc-downstream-regulated-gene-1-inhibits-the-proliferation-and-invasion-of-hepatocellular-carcinoma-cells-via-the-regulation-of-integrin-%C3%AE-3
#16
Yan Song, Guangping Wu, Mingyang Zhang, Qianqian Kong, Juan Du, Yabing Zheng, Longtao Yue, Lili Cao
N-myc downstream-regulated gene 1 (NDRG1) is a multifunctional protein associated with carcinogenesis and tumor progression. The function of NDRG1 in hepatocellular carcinoma (HCC) cells remains controversial. The present study investigated the role of NDRG1 in HCC as well as its molecular mechanism using a range of techniques, including western blot analysis, cellular proliferation test, wound healing assay and Transwell assay. In HCC, the levels of NDRG1 expression were highest in the cytoplasm, followed by the membrane, and were lowest in the nucleus...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28509555/differential-phosphoproteomic-analysis-of-recombinant-chinese-hamster-ovary-cells-following-temperature-shift
#17
Michael Henry, Martin Power, Prashant Kaushik, Orla Coleman, Martin Clynes, Paula Meleady
Phosphorylation is one of the most important post-translational modifications, playing a crucial role in regulating many cellular processes, including transcription, cytoskeletal rearrangement, cell proliferation, differentiation, apoptosis, and signal transduction. However, to date, little work has been carried out on the phosphoproteome in CHO cells. In this study we have carried out a large scale differential phosphoproteomic analysis of recombinant CHO cells following a reduction of culture temperature (temperature shift)...
June 6, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28506304/characterization-of-genetic-aberrations-in-a-single-case-of-metastatic-thymic-adenocarcinoma
#18
Yeonghun Lee, Sehhoon Park, Se-Hoon Lee, Hyunju Lee
BACKGROUND: Thymic adenocarcinoma is an extremely rare subtype of thymic epithelial tumors. Due to its rarity, there is currently no sequencing approach for thymic adenocarcinoma. METHODS: We performed whole exome and transcriptome sequencing on a case of thymic adenocarcinoma and performed subsequent validation using Sanger sequencing. RESULTS: The case of thymic adenocarcinoma showed aggressive behaviors with systemic bone metastases. We identified a high incidence of genetic aberrations, which included somatic mutations in RNASEL, PEG10, TNFSF15, TP53, TGFB2, and FAT1...
May 15, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28498432/time-%C3%A2-and-oxygen-dependent-expression-and-regulation-of-ndrg1-in-human-brain-cancer-cells
#19
Harun Muayad Said, Roghaiyeh Safari, Ghada Al-Kafaji, Ralf-Ingo Ernestus, Mario Löhr, Astrid Katzer, Michael Flentje, Carsten Hagemann
N-myc downstream-regulated gene 1 (NDRG1) is a tumor suppressor with the potential to suppress metastasis, invasion and migration of cancer cells. It is regulated under stress conditions such as starvation or hypoxia. NDRG1 regulation is both induced and controlled by HIF-1α-dependent and -independent pathways under hypoxic conditions. However, there are profound differences in the way NDRG1 expression is regulated by HIF-1α and other transcription factors. Therefore, we aimed to define the time-dependent pattern of NDRG1 mRNA and protein expression in human glioblastoma cell lines in extreme hypoxia and after re-oxygenation as well as under normoxic conditions...
May 3, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28464941/re-emergence-of-hereditary-polyneuropathy-in-scandinavian-alaskan-malamute-dogs-old-enemy-or-new-entity-a-case-series
#20
Karin Hultin Jäderlund, Cecilia Rohdin, Mette Berendt, Øyvind Stigen, Merete Fredholm, Arild Espenes, Inge Bjerkås, Lars Moe
A homozygous mutation has been identified in the N-myc downstream-regulated gene 1 (NDRG1) in recent cases of polyneuropathy in Alaskan malamute dogs from the Nordic countries and USA. The objective of the present study was to determine if cases diagnosed 30-40 years ago with polyneuropathy in the Alaskan malamute breed in Norway had the same hereditary disease as the recent cases. Fourteen historical cases and 12 recently diagnosed Alaskan malamute dogs with hereditary polyneuropathy, and their parents and littermates (n = 88) were included in this study (total n = 114)...
May 2, 2017: Acta Veterinaria Scandinavica
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