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https://www.readbyqxmd.com/read/29353456/in-vivo-transient-and-partial-cell-reprogramming-to-pluripotency-as-a-therapeutic-tool-for-neurodegenerative-diseases
#1
REVIEW
S Tamanini, G P Comi, S Corti
In theory, human diseases in which a specific cell type degenerates, such as neurodegenerative diseases, can be therapeutically addressed by replacement of the lost cells. The classical strategy for cell replacement is exogenous cell transplantation, but now, cell replacement can also be achieved with in situ reprogramming. Indeed, many of these disorders are age-dependent, and "rejuvenating" strategies based on cell epigenetic modifications are a possible approach to counteract disease progression. In this context, transient and/or partial reprogramming of adult somatic cells towards pluripotency can be a promising tool for neuroregeneration...
January 20, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29353423/polymerase-chain-reaction-based-detection-of-myc-transduction-in-feline-leukemia-virus-infected-cats
#2
Ryosuke Sumi, Ariko Miyake, Taiji Endo, Yoshiharu Ohsato, Minh Ha Ngo, Kazuo Nishigaki
Feline lymphomas are associated with the transduction and activation of cellular proto-oncogenes, such as c-myc, by feline leukemia virus (FeLV). We describe a polymerase chain reaction assay for detection of myc transduction usable in clinical diagnosis. The assay targets c-myc exons 2 and 3, which together result in a FeLV-specific fusion gene following c-myc transduction. When this assay was conducted on FeLV-infected feline tissues submitted for clinical diagnosis of tumors, myc transduction was detected in 14% of T-cell lymphoma/leukemias...
January 20, 2018: Archives of Virology
https://www.readbyqxmd.com/read/29353209/mir-182-promotes-prostate-cancer-progression-through-activating-wnt-%C3%AE-catenin-signal-pathway
#3
Dawei Wang, Guoliang Lu, Yuan Shao, Da Xu
Although prostate cancer can be surgical excised and effectively treated by androgen-deprivation therapy, radiotherapy, or chemotherapy, management of patients with advanced or drug-resistance prostate cancer stills remains a big trouble. Accumulated evidence indicated that miR-182 and Wnt/β-catenin function as tumor oncogene in the progression of a variety of tumors. However, little is known about how miR-182 regulates β-catenin signal molecular and impacts on the tumorigenesis of human prostate cancer. In this study, employing the analyses of qRT-PCR, we found that prostate cancer tissues expressed much more miR-182 than non-cancer tissues did...
January 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29353207/geraniin-promotes-osteoblast-proliferation-and-differentiation-via-the-activation-of-wnt-%C3%AE-catenin-pathway
#4
Kejia Li, Xiaochao Zhang, Bo He, Renhua Yang, Yue Zhang, Zhiqiang Shen, Peng Chen, Wei Du
Geraniin is an ellagitannin isolated from Phyllanthus amarus and has a wide range of bioactivities. Our previous study demonstrated that geraniin could alleviate osteoporosis by accelerating bone formation, but the mechanism remains unclear. This study aimed to elucidate the molecular mechanisms by which geraniin promotes osteoblast proliferation and differentiation in vitro. Primary rat bone marrow-derived mesenchymal stem cells were separated and divided into sham operated (Sham) group, Sham treated with geraniin (Sham + GE) group, ovariectomized (OVX) group, OVX treated with geraniin (OVX + GE) group, OVX treated with osteogenic medium (OVX + OM) group, OVX treated with Wnt inhibitor (OVX + WI) group, and OVX treated with Wnt inhibitor and geraniin (OVX + W I + GE) group...
January 17, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29351801/high-expression-of-tmem40-is-associated-with-the-malignant-behavior-and-tumorigenesis-in-bladder-cancer
#5
Zhen-Fei Zhang, Han-Rong Zhang, Qing-Yan Zhang, Shu-Yu Lai, Yu-Zhen Feng, Yi Zhou, Si-Rong Zheng, Rong Shi, Jue-Yu Zhou
BACKGROUND: Bladder cancer (BCa) is one of the most common cancers in the urinary system among the world. Previous studies suggested that TMEM40 expression level was significantly associated with clinicopathological parameters including histological grade, clinical stage and pT status of bladder cancer. However, the molecular mechanism of TMEM40 in BCa remains poorly understood. METHODS: Real-time quantitative RT-PCR (qRT-PCR) and western blot (WB) were used to examine the expression levels of TMEM40 in BCa tissues, paired non-cancer tissues and cell lines...
January 19, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29346508/oroxylin-a%C3%AF-a-natural-compound-mitigates-the-negative-effects-of-tnf%C3%AE-treated-acute-myelogenous-leukemia-cells
#6
Hui Li, Na Lu, Xiaoxuan Yu, Xiao Liu, Po Hu, Yu Zhu, Le Shen, Jingyan Xu, Zhiyu Li, Qinglong Guo, Hui Hui
Tumor necrosis factor alpha (TNFα) is a complicated cytokine which is involved in proliferation and differentiation of acute myelogenous leukemia (AML) cells through a poorly understood mechanism. Mechanistic studies indicate that TNFα induced binding of PI3K subunit p85α to N-terminal truncated nuclear receptor RXRα (tRXRα) proteins, and activated AKT. The activated PI3K/AKT pathway negatively regulated differentiation of AML cells through the up-regulation of c-Myc. In addition, TNFα also induced activation of nuclear factor κB (NF-κB), a nuclear transcription factor which was shown to promote cell proliferation...
January 13, 2018: Carcinogenesis
https://www.readbyqxmd.com/read/29346117/the-deubiquitinase-usp9x-regulates-fbw7-stability-and-suppresses-colorectal-cancer
#7
Omar M Khan, Joana Carvalho, Bradley Spencer-Dene, Richard Mitter, David Frith, Ambrosius P Snijders, Stephen A Wood, Axel Behrens
The tumor suppressor FBW7 targets oncoproteins such as c-MYC for ubiquitylation and is mutated in several human cancers. We noted that in a significant percentage of colon cancers, FBW7 protein is undetectable despite the presence of FBW7 mRNA. To understand the molecular mechanism of FBW7 regulation in these cancers, we employed proteomics and identified the deubiquitinase USP9X as an FBW7 interactor. USP9X antagonised FBW7 ubiquitylation, and Usp9x deletion caused Fbw7 destabilization. Mice lacking Usp9x in the gut showed reduced secretory cell differentiation and increased progenitor proliferation, phenocopying Fbw7 loss...
January 18, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29344579/prognostic-significance-of-cytogenetic-heterogeneity-in-patients-with-newly-diagnosed-multiple-myeloma
#8
Maximilian Merz, Anna Jauch, Thomas Hielscher, Tilmann Bochtler, Stefan Olaf Schönland, Anja Seckinger, Dirk Hose, Uta Bertsch, Kai Neben, Marc Steffen Raab, Jens Hillengass, Hans Salwender, Igor Wolfgang Blau, Hans-Walter Lindemann, Ingo G H Schmidt-Wolf, Christof Scheid, Mathias Haenel, Katja C Weisel, Hartmut Goldschmidt
We investigated subclonal cytogenetic aberrations (CA) detected by interphase fluorescence in situ hybridization (iFISH) in patients with newly diagnosed multiple myeloma (MM) enrolled in the Haemato Oncology Foundation for Adults in the Netherlands (HOVON)-65/German-Speaking MM Group (GMMG)-HD4 phase 3 trial. Patients were either treated with 3 cycles of vincristine, Adriamycin, and dexamethasone or bortezomib, Adriamycin, and dexamethasone and then thalidomide or bortezomib maintenance after tandem autologous transplantation...
January 9, 2018: Blood Advances
https://www.readbyqxmd.com/read/29344091/the-correlation-between-gain-of-chromosome-8q-and-survival-in-patients-with-clear-and-papillary-renal-cell-carcinoma
#9
Reza Mehrazin, Essel Dulaimi, Robert G Uzzo, Karthik Devarjan, Jianming Pei, Marc C Smaldone, Alexander Kutikov, Joseph R Testa, Tahseen Al-Saleem
Background: The proto-oncogene c-MYC, located on chromosome 8q, can be upregulated through gain of 8q, causing alteration in biology of renal cell carcinoma (RCC). The aim of this study was to evaluate the prevalence of c-MYC through chromosome 8q gain and to correlate findings with cancer-specific mortality (CSM), and overall survival (OS). Methods: Cytogenetic analysis by conventional or Chromosomal Genomic Microarray Analysis (CMA) was performed on 414 renal tumors...
January 2018: Therapeutic Advances in Urology
https://www.readbyqxmd.com/read/29343958/preparation-of-anastrozole-loaded-peg-pla-nanoparticles-evaluation-of-apoptotic-response-of-breast-cancer-cell-lines
#10
Yusra A Alyafee, Manal Alaamery, Shahad Bawazeer, Mansour S Almutairi, Badr Alghamdi, Nawaf Alomran, Atia Sheereen, Maha Daghestani, Salam Massadeh
Purpose: Anastrozole (ANS) is an aromatase inhibitor that is widely used as a treatment for breast cancer in postmenopausal women. Despite the wide use of ANS, it is associated with serious side effects due to uncontrolled delivery. In addition, ANS exhibits low solubility and short plasma half-life. Nanotechnology-based drug delivery has the potential to enhance the efficacy of drugs and overcome undesirable side effects. In this study, we aimed to prepare novel ANS-loaded PLA-PEG-PLA nanoparticles (ANS-NPs) and to compare the apoptotic response of MCF-7 cell line to both ANS and ANS-loaded NPs...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29343723/pharmacological-targeting-of-bet-proteins-attenuates-radiation-induced-lung-fibrosis
#11
Jian Wang, Fangzheng Zhou, Zhenyu Li, Hong Mei, Ye Wang, Hong Ma, Liangliang Shi, Ai Huang, Tao Zhang, Zhenyu Lin, Gang Wu
Radiation-induced lung injury has restricted radiotherapy for thoracic cancer. The purpose of this study was to investigate the radioprotective effects of bromodomain and extra terminal (BET) inhibitor JQ1 in a murine model of pulmonary damage. Chest computed tomography (CT) was performed in a rat model after 20 Gy radiation of the right thorax. And histological evaluation and protein expressions of irradiated tissue were analyzed to confirm the potential anti-fibrosis effect of JQ1 and its underlying mechanisms...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343578/a-new-quinoline-brd4-inhibitor-targets-a-distinct-latent-hiv-1-reservoir-for-re-activation-from-other-shock-drugs
#12
Erik Abner, Mateusz Stoszko, Lei Zeng, Heng-Chang Chen, Andrea Izquierdo-Bouldstridge, Tsuyoshi Konuma, Eduard Zorita, Elisa Fanunza, Qiang Zhang, Tokameh Mahmoudi, Ming-Ming Zhou, Guillaume J Filion, Albert Jordan
Upon HIV-1 infection, a reservoir of latently infected resting T cells prevents the eradication of the virus from patients. To achieve complete depletion, the existing virus-suppressing antiretroviral therapy must be combined with drugs that reactivate the dormant viruses. We previously described a novel chemical scaffold compound, MMQO (8-methoxy-6-methylquinolin-4-ol) that is able to reactivate viral transcription in several models of HIV latency including J-Lat cells through an unknown mechanism. MMQO potentiates the activity of known latency-reversing agents (LRAs) or 'shock' drugs such as PKC agonists or HDAC inhibitors...
January 17, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29343267/tipe2-suppresses-progression-and-tumorigenesis-of-esophageal-carcinoma-via-inhibition-of-the-wnt-%C3%AE-catenin-pathway
#13
Linan Zhu, Xudong Zhang, Xiaorui Fu, Zhaoming Li, Zhenchang Sun, Jingjing Wu, Xinhua Wang, Feng Wang, Xiangke Li, Songtao Niu, Mengjie Ding, Zhenzhen Yang, Wanqiu Yang, Meifeng Yin, Lei Zhang, Mingzhi Zhang
BACKGROUND: Esophageal carcinoma is the eighth prevalent malignancy and ranks the sixth in carcinoma-related death worldwide. Tumor necrosis factor-α-induced protein-8 like-2 (TIPE2) has been identified as a tumor suppressor in multiple carcinomas. However, its roles and molecular mechanisms underlying esophageal carcinoma progression are still undefined till now. METHODS: RT-qPCR assay was employed to detect the expression of TIPE2 mRNA. TIPE2 protein expression was measured by using western blot assay...
January 17, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29340064/antitumor-activity-of-resveratrol-against-human-osteosarcoma-cells-a-key-role-of-cx43-and-wnt-%C3%AE-catenin-signaling-pathway
#14
Da Xie, Gui-Zhou Zheng, Peng Xie, Qi-Hao Zhang, Fei-Xiang Lin, Bo Chang, Qin-Xiao Hu, Shi-Xin Du, Xue-Dong Li
Osteosarcoma is a high-grade bone sarcoma with strong invasive ability. However, treatment with traditional chemotherapeutic drugs is limited by low tolerability and side effects. Resveratrol has been reported previously to have selective antitumor effect on various tumor cells while little is known about its effects and underlying mechanism in osteosarcoma biology. In this study, we found that resveratrol inhibits proliferation and glycolysis, induces apoptosis and reduces the invasiveness of U2-OS cells in vitro...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29340049/pharmacological-treatment-with-inhibitors-of-nuclear-export-enhances-the-antitumor-activity-of-docetaxel-in-human-prostate-cancer
#15
Giovanni Luca Gravina, Andrea Mancini, Alessandro Colapietro, Francesco Marampon, Roberta Sferra, Simona Pompili, Leda Assunta Biordi, Roberto Iorio, Vincenzo Flati, Christian Argueta, Yosef Landesman, Michael Kauffman, Sharon Shacham, Claudio Festuccia
Background and aims: Docetaxel (DTX) modestly increases patient survival of metastatic castration-resistant prostate cancer (mCRPC) due to insurgence of pharmacological resistance. Deregulation of Chromosome Region Maintenance (CRM-1)/ exportin-1 (XPO-1)-mediated nuclear export may play a crucial role in this phenomenon. Material and methods: Here, we evaluated the effects of two Selective Inhibitor of Nuclear Export (SINE) compounds, selinexor (KPT-330) and KPT-251, in association with DTX by using 22rv1, PC3 and DU145 cell lines with their...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339775/anti-apoptotic-a1-is-not-essential-for-lymphoma-development-in-e%C3%A2%C2%B5-myc-mice-but-helps-sustain-transplanted-e%C3%A2%C2%B5-myc-tumour-cells
#16
Mark Mensink, Natasha S Anstee, Mikara Robati, Robyn L Schenk, Marco J Herold, Suzanne Cory, Cassandra J Vandenberg
The transcription factor c-MYC regulates a multiplicity of genes involved in cellular growth, proliferation, metabolism and DNA damage response and its overexpression is a hallmark of many tumours. Since MYC promotes apoptosis under conditions of stress, such as limited availability of nutrients or cytokines, MYC-driven cells are very much dependent on signals that inhibit cell death. Stress signals trigger apoptosis via the pathway regulated by opposing fractions of the BCL-2 protein family and previous genetic studies have shown that the development of B lymphoid tumours in Eµ-Myc mice is critically dependent on expression of pro-survival BCL-2 relatives MCL-1, BCL-W and, to a lesser extent, BCL-XL, but not BCL-2 itself, and that sustained growth of these lymphomas is dependent on MCL-1...
January 16, 2018: Cell Death and Differentiation
https://www.readbyqxmd.com/read/29339537/stat3-pias3-levels-serve-as-early-signature-genes-in-the-development-of-high-grade-serous-carcinoma-from-the-fallopian-tube
#17
Uksha Saini, Adrian A Suarez, Shan Naidu, John J Wallbillich, Kristin Bixel, Ross Wanner, Jason Bice, Raleigh D Kladney, Jenny Lester, Beth Y Karlan, Paul J Goodfellow, David E Cohn, Karuppaiyah Selvendiran
The initial molecular events that lead to malignant transformation of the fimbria of the fallopian tube (FT) through high-grade serous ovarian carcinoma (HGSC) remain poorly understood. In this study, we report that increased expression of signal transducer and activator of transcription 3 (pSTAT3 Tyr705) and suppression or loss of protein inhibitor of activated STAT3 (PIAS3) in FT likely drive HGSC. We evaluated human tissues-benign normal FT, tubal peritoneal junction (TPJ), p53 signature fallopian tube tissue, tubal intraepithelial lesion in transition (TILT), serous tubal intraepithelial carcinoma (STIC) without ovarian cancer, and HGSC for expression of STAT3/PIAS3 (compared with their known TP53 signature) and their target proliferation genes...
January 16, 2018: Cancer Research
https://www.readbyqxmd.com/read/29339161/a-new-genetically-engineered-mouse-model-of-choroid-plexus-carcinoma
#18
Salsabiel El Nagar, Frederique Zindy, Charlotte Moens, Luc Martin, Damien Plassard, Martine F Roussel, Thomas Lamonerie, Nathalie Billon
Choroid plexus carcinomas (CPCs) are highly malignant brain tumours predominantly found in children and associated to poor prognosis. Improved therapy for these cancers would benefit from the generation of animal models. Here we have created a novel mouse CPC model by expressing a stabilised form of c-Myc (MycT58A) and inactivating Trp53 in the choroid plexus of newborn mice. This induced aberrant proliferation of choroid plexus epithelial cells, leading to aggressive tumour development and death within 150 days...
January 12, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29337428/ap4-positively-regulates-laptm4b-to-promote-hepatocellular-carcinoma-growth-and-metastasis-whilst-reducing-chemotherapy-sensitivity
#19
Yue Meng, Lu Wang, Jianjun Xu, Qingyun Zhang
Polymorphisms of the Lysosomal-Associated Protein Transmembrane-4 beta (LAPTM4B) gene are related to various forms of tumour susceptibility, which led us to hypothesize that some unique transcription factors targeting this polymorphism region may affect the biological function of LAPTM4B in tumour progression. In this study, we found that the transcription factor AP4 directly binds to the polymorphism region of the LAPTM4B gene promoter and induces its transcription. In addition, we demonstrated that AP4 promotes hepatocellular carcinoma cell proliferation and metastasis, and depresses chemotherapy sensitivity via LAPTM4B by activating the PI3K/AKT signalling pathway and caspase-dependent pathway...
January 16, 2018: Molecular Oncology
https://www.readbyqxmd.com/read/29337138/let-7-suppresses-b-cell-activation-through-restricting-the-availability-of-necessary-nutrients
#20
Shuai Jiang, Wei Yan, Shizhen Emily Wang, David Baltimore
The control of uptake and utilization of necessary extracellular nutrients-glucose and glutamine-is an important aspect of B cell activation. Let-7 is a family of microRNAs known to be involved in metabolic control. Here, we employed several engineered mouse models, including B cell-specific overexpression of Lin28a or the let-7a-1/let-7d/let-7f-1 cluster (let-7adf) and knockout of individual let-7 clusters to show that let-7adf specifically inhibits T cell-independent (TI) antigen-induced immunoglobulin (Ig)M antibody production...
January 10, 2018: Cell Metabolism
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