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https://www.readbyqxmd.com/read/29782850/histone-deacetylase-1-promotes-glioblastoma-cell-proliferation-and-invasion-via-activation-of-pi3k-akt-and-mek-erk-signaling-pathways
#1
Shun Li, Xiangrong Chen, Lifang Mao, Kashif Rafiq Zahid, Jun Wen, Liu Zhang, Maoying Zhang, Junwei Duan, Jie Duan, Xiaohong Yin, Yuanchuan Wang, Long Zhao, Xiaoping Tang, Xiangyu Wang, Guozheng Xu
Histone deacetylase 1 (HDAC1) plays a crucial role in cancer progression and development. This enzyme has been confirmed to be a key regulator of tumor biology functions, such as tumor cell proliferation, migration and invasion. However, HDAC1 expression in glioma remains controversial, and its specific function and molecular mechanism in glioblastoma is poorly understood. In this study, our findings demonstrated that protein and mRNA levels of HDAC1 were increased in glioma cell lines and glioma tissues compared to normal glial cell lines and non-neoplastic brain tissues, respectively...
May 18, 2018: Brain Research
https://www.readbyqxmd.com/read/29782008/de-novo-generation-of-somatic-stem-cells-by-yap-taz
#2
Tito Panciera, Luca Azzolin, Daniele Di Biagio, Antonio Totaro, Michelangelo Cordenonsi, Stefano Piccolo
Here we present protocols to isolate primary differentiated cells and turn them into stem/progenitor cells (SCs) of the same lineage by transient expression of the transcription factor YAP. With this method, luminal differentiated (LD) cells of the mouse mammary gland are converted into cells that exhibit molecular and functional properties of mammary SCs. YAP also turns fully differentiated pancreatic exocrine cells into pancreatic duct-like progenitors. Similarly, to endogenous, natural SCs, YAP-induced stem-like cells ("ySCs") can be eventually expanded as organoid cultures long term in vitro, without further need of ectopic YAP/TAZ, as ySCs are endowed with a heritable self-renewing SC-like state...
May 7, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781033/microarray-analysis-of-circular-rna-expression-profiles-associated-with-gemcitabine-resistance-in-pancreatic-cancer-cells
#3
Chao Xu, Yue Yu, Fei Ding
Pancreatic cancer (PC) is one of the most malignant tumors of the digestive system due to its rapid progression, metastasis and resistance to chemotherapy. Gemcitabine (GEM) chemotherapy is the first‑choice treatment for advanced PC. However, the effect of GEM‑based chemotherapy on PC is limited due to the development of chemoresistance, and the molecular mechanisms underlying this resistance have yet to be investigated. Circular RNAs (circRNAs), which can function as microRNA sponges, have been found to be involved in the development of several types of cancer...
May 17, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29780635/liquid-biopsy-for-lung-cancer-early-detection
#4
REVIEW
Mariacarmela Santarpia, Alessia Liguori, Alessandro D'Aveni, Niki Karachaliou, Maria Gonzalez-Cao, Maria Grazia Daffinà, Chiara Lazzari, Giuseppe Altavilla, Rafael Rosell
Molecularly targeted therapies and immune checkpoint inhibitors have markedly improved the therapeutic management of advanced lung cancer. However, it still remains the leading cause of cancer-related mortality worldwide, with disease stage at diagnosis representing the main prognostic factor. Detection of lung cancer at an earlier stage of disease, potentially susceptible of curative resection, can be critical to improve patients survival. Low-dose computed tomography (LDCT) screening of high-risk patients has been demonstrated to reduce mortality from lung cancer, but can be also associated with high false-positive rate, thus often resulting in unnecessary interventions for patients...
April 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29779068/new-insights-into-the-inflamed-tumor-immune-microenvironment-of-gastric-cancer-with-lymphoid-stroma-from-morphology-and-digital-analysis-to-gene-expression
#5
Irene Gullo, Patrícia Oliveira, Maria Athelogou, Gilza Gonçalves, Marta L Pinto, Joana Carvalho, Ana Valente, Hugo Pinheiro, Sara Andrade, Gabriela M Almeida, Ralf Huss, Kakoli Das, Patrick Tan, José C Machado, Carla Oliveira, Fátima Carneiro
BACKGROUND: Gastric cancer with lymphoid stroma (GCLS) is characterized by prominent stromal infiltration of T-lymphocytes. The aim of this study was to investigate GCLS biology through analysis of clinicopathological features, EBV infection, microsatellite instability (MSI), immune gene-expression profiling and PD-L1 status in neoplastic cells and tumor immune microenvironment. METHODS: Twenty-four GCLSs were analyzed by RNA in situ hybridization for EBV (EBER), PCR/fragment analysis for MSI, immunohistochemistry (PD-L1, cytokeratin, CD3, CD8), co-immunofluorescence (CK/PD-L1, CD68/PD-L1), NanoString gene-expression assay for immune-related genes and PD-L1 copy number alterations...
May 19, 2018: Gastric Cancer
https://www.readbyqxmd.com/read/29777944/the-post-surgical-era-of-gbm-how-molecular-biology-has-impacted-on-our-clinical-management-a-review
#6
REVIEW
M Monticelli, P Zeppa, F Zenga, R Altieri, M Mammi, L Bertero, I Castellano, P Cassoni, A Melcarne, G La Rocca, G Sabatino, A Ducati, D Garbossa
Glioblastoma (GBM) is the most common glioma in adults, with incidence increasing by 3% per year. According to the World Health Organization Classification of Central Nervous System Tumors, GBM is considered a grade IV tumor due to its malignant behavior. The aim of this review is to summarize the main biological aspects of GBM. In particular, we focused our attention on those alterations which have been proven to have an impact on patients' outcome, mainly in terms of overall survival (OS), or on the tumor response to therapies...
May 16, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29777398/the-role-of-dna-methylation-in-renal-cell-carcinoma
#7
REVIEW
Brittany N Lasseigne, James D Brooks
Renal cell carcinoma (RCC) is the most common kidney cancer and includes several molecular and histological subtypes with different clinical characteristics. While survival rates are high if RCC is diagnosed when still confined to the kidney and treated definitively, there are no specific diagnostic screening tests available and symptoms are rare in early stages of the disease. Management of advanced RCC has changed significantly with the advent of targeted therapies, yet survival is usually increased by months due to acquired resistance to these therapies...
May 18, 2018: Molecular Diagnosis & Therapy
https://www.readbyqxmd.com/read/29776650/signaling-pathway-deregulation-and-molecular-alterations-across-pediatric-medulloblastomas
#8
REVIEW
B Lhermitte, A F Blandin, A Coca, E Guerin, A Durand, N Entz-Werlé
Medulloblastomas (MBs) account for 15% of brain tumors in children under the age of 15. To date, the overall 5-year survival rate for all children is only around 60%. Recent advances in cancer genomics have led to a fundamental change in medulloblastoma classification and is evolving along with the genomic discoveries, allowing to regularly reclassify this disease. The previous molecular classification defined 4 groups (WNT-activated MB, SHH-activated MB and the groups 3 and 4 characterized partially by NMYC and MYC driven MBs)...
May 15, 2018: Neuro-Chirurgie
https://www.readbyqxmd.com/read/29775690/molecular-subtyping-of-colorectal-cancer-recent-progress-new-challenges-and-emerging-opportunities
#9
REVIEW
Wei Wang, Raju Kandimalla, Hao Huang, Lina Zhu, Ying Li, Feng Gao, Ajay Goel, Xin Wang
Colorectal cancer (CRC) is one of the leading causes of cancer-related deaths worldwide. Similar to many other malignancies, CRC is a heterogeneous disease, making it a clinical challenge for optimization of treatment modalities in reducing the morbidity and mortality associated with this disease. A more precise understanding of the biological properties that distinguish patients with colorectal tumors, especially in terms of their clinical features, is a key requirement towards a more robust, targeted-drug design, and implementation of individualized therapies...
May 15, 2018: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/29775627/acquisition-of-tumorigenic-potential-and-therapeutic-resistance-in-cd133-subpopulation-of-prostate-cancer-cells-exhibiting-stem-cell-like-characteristics
#10
Rajnee Kanwal, Sanjeev Shukla, Ethan Walker, Sanjay Gupta
The role of CD133 (Prominin-1) as a cancer stem cell marker may be useful for therapeutic approaches and prognostication in prostate cancer patients. We investigated the stem-cell-related function and biological features of a subpopulation of CD133+ cells isolated from established primary human prostate cancer cell lines. The CD133+ cells sorted from human prostate cancer 22Rv1 exhibited high clonogenic and tumorigenic capabilities, sphere forming capacity and serially reinitiated transplantable tumors in NOD-SCID mice...
May 15, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29774626/analysis-of-intra-tumor-heterogeneity-in-neurofibromatosis-type-1-plexiform-neurofibromas-and-neurofibromas-with-atypical-features-correlating-histological-and-genomic-findings
#11
Meritxell Carrió, Bernat Gel, Ernest Terribas, Adriana Carolina Zucchiatti, Teresa Moliné, Inma Rosas, Álex Teulé, Santiago Ramón Y Cajal, Juan Carlos López-Gutiérrez, Ignacio Blanco, Elisabeth Castellanos, Conxi Lázaro, Anat Stemmer-Rachamimov, Cleofé Romagosa, Eduard Serra
Plexiform neurofibromas (PNFs) are benign peripheral nerve sheath tumors involving large nerves present in 30-50% Neurofibromatosis type 1 (NF1) patients. Atypical neurofibromas (ANF) are distinct nodular lesions with atypical features on histology that arise from PNFs. The risk and timeline of malignant transformation in ANF is difficult to assess. A recent NIH workshop has stratified ANFs and separated a subgroup with multiple atypical features and higher risk of malignant transformation termed atypical neurofibromatous neoplasms with uncertain biological potential (ANNUBP)...
May 17, 2018: Human Mutation
https://www.readbyqxmd.com/read/29774098/establishment-of-primary-cell-culture-and-an-intracranial-xenograft-model-of-pediatric-ependymoma-a-prospect-for-therapy-development-and-understanding-of-tumor-biology
#12
Lorena Favaro Pavon, Tatiana Tais Sibov, Silvia Regina Caminada de Toledo, Daniela Mara de Oliveira, Francisco Romero Cabral, Jean Gabriel de Souza, Pamela Boufleur, Luciana C Marti, Jackeline Moraes Malheiros, Edgar Ferreira da Cruz, Fernando F Paiva, Suzana M F Malheiros, Manoel A de Paiva Neto, Alberto Tannús, Sérgio Mascarenhas de Oliveira, Nasjla Saba Silva, Andrea Maria Cappellano, Antonio Sérgio Petrilli, Ana Marisa Chudzinski-Tavassi, Sérgio Cavalheiro
Background: Ependymoma (EPN), the third most common pediatric brain tumor, is a central nervous system (CNS) malignancy originating from the walls of the ventricular system. Surgical resection followed by radiation therapy has been the primary treatment for most pediatric intracranial EPNs. Despite numerous studies into the prognostic value of histological classification, the extent of surgical resection and adjuvant radiotherapy, there have been relatively few studies into the molecular and cellular biology of EPNs...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29774079/long-non-coding-rnas-ac026904-1-and-uca1-a-one-two-punch-for-tgf-%C3%AE-induced-snai2-activation-and-epithelial-mesenchymal-transition-in-breast-cancer
#13
Guo-Yin Li, Wei Wang, Jian-Yong Sun, Bo Xin, Xiang Zhang, Ting Wang, Qian-Feng Zhang, Li-Bo Yao, Hua Han, Dai-Ming Fan, An-Gang Yang, Lin-Tao Jia, Lei Wang
Transforming growth factor-β (TGF-β) has received much attention as a major inducer of epithelial-mesenchymal transition (EMT) during cancer progression, mainly by activating a set of pleiotropic transcription factors including SNAI2/Slug. However, the involvement of long non-coding RNAs (lncRNAs) in TGF-β-induced Slug activation and EMT remains largely unknown. Methods: In this study, we used microarray analysis to compare lncRNA expression profiles between TGF-β treated and untreated breast cancer cells...
2018: Theranostics
https://www.readbyqxmd.com/read/29774077/long-noncoding-rna-mir503hg-a-prognostic-indicator-inhibits-tumor-metastasis-by-regulating-the-hnrnpa2b1-nf-%C3%AE%C2%BAb-pathway-in-hepatocellular-carcinoma
#14
Hui Wang, Linhui Liang, Qiongzhu Dong, Lin Huan, Jia He, Botai Li, Chen Yang, Haojie Jin, Lin Wei, Chengtao Yu, Fangyu Zhao, Jinjun Li, Ming Yao, Wenxin Qin, Lunxiu Qin, Xianghuo He
Long noncoding RNAs (lncRNAs) have been associated with hepatocellular carcinoma (HCC), but the underlying molecular mechanisms of their specific association with hepatocarcinogenesis have not been fully explored. Methods: miR503HG was identified by microarray and validated by real-time PCR. Survival analysis was evaluated using the Kaplan-Meier method and assessed using the log-rank test. In vitro and in vivo assays were preformed to explore the biological effects of miR503HG in HCC cells. The interaction of miR503HG with HNRNPA2B1 was identified by RNA pull-down and RNA immunoprecipitation...
2018: Theranostics
https://www.readbyqxmd.com/read/29773584/mechanisms-in-endocrinology-cell-cycle-regulation-in-adrenocortical-carcinoma
#15
Sofia Pereira, Mariana P Monteiro, Isabelle Bourdeau, Andre Lacroix, Duarte Pignatelli
Adrenocortical carcinomas are rather rare endocrine tumors that often have a poor prognosis. The reduced survival rate associated with these tumors is due to their aggressive biological behavior, combined with the scarcity of effective treatment options that are currently available. The recent identification of the genomic alterations present in ACC have provided further molecular mechanisms to develop consistent strategies for the diagnosis, prevention of progression and treatment of advanced ACCs. Taken together, molecular and genomic advances could be leading the way to develop personalized medicine in ACCs similarly to similar developments in lung or breast cancers...
May 17, 2018: European Journal of Endocrinology
https://www.readbyqxmd.com/read/29772699/synthesis-molecular-structure-anticancer-activity-and-qsar-study-of-n-aryl-heteroaryl-4-1-h-pyrrol-1-yl-benzenesulfonamide-derivatives
#16
Beata Żołnowska, Jarosław Sławiński, Zdzisław Brzozowski, Anna Kawiak, Mariusz Belka, Joanna Zielińska, Tomasz Bączek, Jarosław Chojnacki
A series of N -(aryl/heteroaryl)-4-(1 H -pyrrol-1-yl)benzenesulfonamides were synthesized from 4-amino- N -(aryl/heteroaryl)benzenesulfonamides and 2,5-dimethoxytetrahydrofuran. All the synthesized compounds were evaluated for their anticancer activity on HeLa, HCT-116, and MCF-7 human tumor cell lines. Compound 28 , bearing 8-quinolinyl moiety, exhibited the most potent anticancer activity against the HCT-116, MCF-7, and HeLa cell lines, with IC50 values of 3, 5, and 7 µM, respectively. The apoptotic potential of the most active compound ( 28 ) was analyzed through various assays: phosphatidylserine translocation, cell cycle distribution, and caspase activation...
May 16, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29772433/lncrna-sox21-as1-is-associated-with-progression-of-hepatocellular-carcinoma-and-predicts-prognosis-through-epigenetically-silencing-p21
#17
Congxin Wei, Hong Wang, Fei Xu, Zeng Liu, Runde Jiang
Long non-coding RNAs (lncRNAs) have been widely reported in various cancers due to their special molecular mechanisms. LncRNA SOX21-AS1 has been discovered to be a tumor facilitator in several types of human cancers. However, the expression pattern, clinical value and biological effects in hepatocellular carcinoma (HCC) are still unknown. In this study, we detected the high expression level of SOX21-AS1 in tumor tissues and cell lines through performing qRT-PCR analysis. The prognostic value of SOX21-AS1 was identified...
May 14, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29772274/pharmacodynamic-and-pharmacokinetic-characteristics-of-ymr-65-a-tubulin-inhibitor-in-tumor-bearing-mice
#18
Ali Fan, Jiali Wei, Mengru Yang, Qing Zhang, Yaliang Zhang, Qingwang Liu, Ning Li, Di Zhao, Yang Lu, Junxiu Li, Jie Zhao, Shuhua Deng, Bingjie Zhang, Hailiang Zhu, Xijing Chen
YMR-65, 5-(5-bromo-1-methyl-1H-indol-3-yl)-3-(3-methoxyphenyl)-4, 5-dihydro-1H-pyrazole-1-carboxamide, is a potential tubulin inhibitor exhibiting good anticancer activity. In our study, we illustrated the biological activities in HepG2 cells and the pharmacodynamic and pharmacokinetic profiles were evaluated in murine H22 hepatoma-bearing mice. Molecular docking assay and colchicine competition assay indicated that YMR-65 could bind tightly to the colchicine binding site of tubulin. Further investigation demonstrated that YMR-65 arrested cells in the G2/M phase of cell cycle and induced apoptosis in HepG2 cells...
May 14, 2018: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29772170/supramolecularly-engineered-circular-bivalent-aptamer-for-enhanced-functional-protein-delivery
#19
Ying Jiang, Xiaoshu Pan, Jin Chang, Weijia Niu, Weijia Hou, Hailan Kuai, Zilong Zhao, Ji Liu, Ming Wang, Weihong Tan
Circular bivalent aptamers (cb-apt) comprise an emerging class of chemically engineered aptamers with substantially improved stability and molecular recognition ability. Its therapeutic application, however, is challenged by the lack of functional modules to control the interactions of cb-apt with therapeutics. We present the design of a β-cyclodextrin-modified cb-apt (cb-apt-βCD) and its supramolecular interaction with molecular therapeutics via host-guest chemistry for targeted intracellular delivery. The supramolecular ensemble exhibits high serum stability and enhanced intracellular delivery efficiency compared to a monomeric aptamer...
May 17, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29771442/microrna-222-contributed-to-cell-proliferation-invasion-and-migration-via-regulating-ywhag-in-osteosarcoma
#20
Y-W Chu, C-R Wang, F-B Weng, Z-J Yan, C Wang
OBJECTIVE: The aim of this study was to investigate the role of microRNA-222 (miR-222) in osteosarcoma (OS), and to further explore the potential molecular mechanism. PATIENTS AND METHODS: We measured the level of miR-222 in OS tissues and cell lines using quantitative Real-time polymerase chain reaction. Synthesized miR-222 mimics or inhibitors were obtained to up-regulate or down-regulate the expression of miR-222 in U2OS or Saos2 cells. Cell counting kit-8 (CCK8) and colony formation assay were employed to detect the ability of cell proliferation, and transwell assay was used to confirm the ability of cell invasion...
May 2018: European Review for Medical and Pharmacological Sciences
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