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https://www.readbyqxmd.com/read/29344185/downregulation-of-mir-30a-is-associated-with-proliferation-and-invasion-via-targeting-mef2d-in-cervical-cancer
#1
Jing Zhao, Bo Li, Chuqiang Shu, Yun Ma, Yingping Gong
Accumulating studies have revealed that microRNAs serve crucial roles in cancer development and progression. MicroRNA-30a (miR-30a) has been implicated in various cancer types. However, the role of miR-30a in cervical cancer remains unclear. In the current study, a reverse transcription-quantitative polymerase chain reaction (RT-qPCR) assay revealed that miR-30a was significantly downregulated in cervical cancer tissues compared with adjacent normal tissues, and in the cervical cancer cell lines HeLa, SiHa and Ca-Ski compared with GH329 normal cervical epithelial cells...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343462/a-tailored-web-based-advice-tool-for-skiers-and-snowboarders-protocol-for-a-randomized-controlled-trial
#2
Ellen Kemler, Vincent Gouttebarge
BACKGROUND: Being active in sports has many positive health effects. The direct effects of engaging in regular physical activity are particularly apparent in the prevention of several chronic diseases, including cardiovascular disease, diabetes, cancer, hypertension, obesity, depression, and osteoporosis. Besides the beneficial health effects of being active, sports participation is unfortunately also associated with a risk of injuries. In the case of many sports injuries (eg, winter sports) preventive measures are not compulsory, which means that a behavioral change in sports participants is necessary to increase the use of effective measures, and subsequently prevent or reduce injuries in sports...
January 17, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29303970/cytotoxic-effects-and-anti-angiogenesis-potential-of-pistachio-pistacia-vera-l-hulls-against-mcf-7-human-breast-cancer-cells
#3
Maryam Seifaddinipour, Reyhaneh Farghadani, Farideh Namvar, Jamaludin Mohamad, Habsah Abdul Kadir
Pistachio (Pistacia vera L.) hulls (PVLH) represents a significant by-product of industrial pistachio processing that contains high amounta of phenolic and flavonoid compounds known to act as antioxidants. The current study was designed to evaluate the anti-tumor and anti-angiogenic potentials of PVLH extracts. The cytotoxic effects of hexane, ethyl acetate, methanol, and water PVLH extracts toward human colon cancer (HT-29 and HCT-116), breast adenocarcinoma (MCF-7), lung adenocarcinoma (H23), liver hepatocellular carcinoma (HepG2), cervical cancer (Ca Ski), and normal fibroblast (BJ-5ta) cells were assessed using a MTT cell viability assay...
January 5, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29296202/cell-death-and-restoration-of-trail-sensitivity-by-ciglitazone-in-resistant-cervical-cancer-cells
#4
Marie-Laure Plissonnier, Sylvie Fauconnet, Hugues Bittard, Christiane Mougin, Jean Rommelaere, Isabelle Lascombe
Known activators of the Peroxisome Proliferator-Activated Receptor γ (PPARγ), thiazolidinediones (TZD) induce apoptosis in a variety of cancer cells through dependent and/or independent mechanisms of the receptor. We tested a panel of TZD (Rosiglitazone, Pioglitazone, Ciglitazone) to shed light on their potential therapeutic effects on three cervical cancer cell lines (HeLa, Ca Ski, C-33 A). In these cells, only ciglitazone triggered apoptosis through PPARγ-independent mechanisms and in particular via both extrinsic and intrinsic pathways in Ca Ski cells containing Human PapillomaVirus (HPV) type 16...
December 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/29227283/sharpin-mediated-regulation-of-protein-arginine-methyltransferase-5-controls-melanoma-growth
#5
Hironari Tamiya, Hyungsoo Kim, Oleksiy Klymenko, Heejung Kim, Yongmei Feng, Tongwu Zhang, Ji Yun Han, Ayako Murao, Scott J Snipas, Lucia Jilaveanu, Kevin Brown, Harriet Kluger, Hao Zhang, Kazuhiro Iwai, Ze'ev A Ronai
SHARPIN, an adaptor for the linear ubiquitin chain assembly complex (LUBAC), plays important roles in NF-κB signaling and inflammation. Here, we have demonstrated a LUBAC-independent role for SHARPIN in regulating melanoma growth. We observed that SHARPIN interacted with PRMT5, a type II protein arginine methyltransferase, and increased its multiprotein complex and methyltransferase activity. Activated PRMT5 controlled the expression of the transcription factors SOX10 and MITF by SHARPIN-dependent arginine dimethylation and inhibition of the transcriptional corepressor SKI...
December 11, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29207959/insulin-like-growth-factor-receptor-and-sphingosine-kinase-are-prognostic-and-therapeutic-targets-in-breast-cancer
#6
Aleksandra M Ochnik, Robert C Baxter
BACKGROUND: Targeting the type 1 insulin-like growth factor receptor (IGF1R) in breast cancer remains an ongoing clinical challenge. Oncogenic IGF1R-signaling occurs via activation of PI3K/AKT/MAPK downstream mediators which regulate cell proliferation and protein synthesis. To further understand IGF1R signaling we have investigated the involvement of the oncogenic IGF1R-related sphingosine kinase (SphK) pathway. METHODS: The prognostic (overall survival, OS) and therapeutic (anti-endocrine therapy) co-contribution of IGF1R and SphK1 were investigated using breast cancer patient samples (n = 236) for immunohistochemistry to measure total and phosphorylated IGF1R and SphK1...
December 5, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29200721/helichrysetin-induces-dna-damage-that-triggers-jnk-mediated-apoptosis-in-ca-ski-cells
#7
Ho Yen Fong, Sri Nurestri Abd Malek, Hui Shin Yee, Saiful Anuar Karsani
Background: Cervical cancer has become one of the most common cancers in women and currently available treatment options for cervical cancer are very limited. Naturally occurring chalcones and its derivatives have been studied extensively as a potential anticancer agent in different types of cancer and helichrysetin is naturally occurring chalcone that possess potent antiproliferative activity toward human cancer cells. Materials and Methods: Inhibitory activity of helichrysetin was evaluated at different concentrations...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29191063/changes-in-dna-methylation-induced-by-multi-walled-carbon-nanotube-exposure-in-the-workplace
#8
Manosij Ghosh, Deniz Öner, Katrien Poels, Ali M Tabish, Jelle Vlaanderen, Anjoeka Pronk, Eelco Kuijpers, Qing Lan, Roel Vermeulen, Bram Bekaert, Peter Hm Hoet, Lode Godderis
This study was designed to assess the epigenetic alterations in blood cells, induced by occupational exposure to multi-wall carbon nanotubes (MWCNT). The study population comprised of MWCNT-exposed workers (n=24) and unexposed controls (n=43) from the same workplace. We measured global DNA methylation/hydroxymethylation levels on the 5th cytosine residues using a validated liquid chromatography tandem-mass spectrometry (LC-MS/MS) method. Sequence-specific methylation of LINE1 retrotransposable element 1 (L1RE1) elements, and promoter regions of functionally important genes associated with epigenetic regulation [DNA methyltransferase-1 (DNMT1) and histone deacetylase 4 (HDAC4)], DNA damage/repair and cell cycle pathways [nuclear protein, coactivator of histone transcription/ATM serine/threonine kinase (NPAT/ATM)], and a potential transforming growth factor beta (TGF-β) repressor [SKI proto-oncogene (SKI)] were studied using bisulfite pyrosequencing...
November 30, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/29118270/upregulation-of-pir-gene-expression-induced-by-human-papillomavirus-e6-and-e7-in-epithelial-oral-and-cervical-cells
#9
Diego Carrillo, Juan P Muñoz, Hernán Huerta, Gabriel Leal, Alejandro Corvalán, Oscar León, Gloria M Calaf, Ulises Urzúa, Enrique Boccardo, Julio C Tapia, Francisco Aguayo
The hallmark of high-risk human papillomavirus (HR-HPV)-related carcinogenesis is E6 and E7 oncogene overexpression. The aim of this work was to characterize epithelial oral and cervical cancer cells that express HR-HPV E6 and E7 oncoproteins. Transcriptomic assay using DNA microarrays revealed that PIR gene expression was detected in oral cells in an HR-HPV E6/E7-dependent manner. In addition, PIR was overexpressed in HPV-positive SiHa and Ca Ski cells, whereas it was undetectable in HPV-negative C33A cells...
November 2017: Open Biology
https://www.readbyqxmd.com/read/29028945/sphingosine-kinase-1-expression-in-peritoneal-macrophages-is-required-for-colon-carcinogenesis
#10
Hideki Furuya, Paulette M Tamashiro, Yoshiko Shimizu, Kayoko Iino, Rafael Peres, Runpu Chen, Yijun Sun, Yusuf A Hannun, Lina M Obeid, Toshihiko Kawamori
Accumulating evidence suggests that the sphingosine kinase 1 (SphK1)/sphingosine 1-phosphate (S1P) pathway plays a pivotal role in colon carcinogenesis. Our previous studies indicate that the SphK1/S1P pathway mediates colon carcinogenesis at least by regulating COX-2 expression and prostaglandin E2 (PGE2) production. However, the mechanisms by which this pathway regulates colon carcinogenesis are still unclear. First, we show that SphK1 deficient mice significantly attenuated azoxymethane (AOM)-induced colon carcinogenesis as measured by colon tumor incidence, multiplicity, and volume...
September 23, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28890935/ski-178-a-multitargeted-inhibitor-of-sphingosine-kinase-and-microtubule-dynamics-demonstrating-therapeutic-efficacy-in-acute-myeloid-leukemia-models
#11
Jeremy A Hengst, Taryn E Dick, Arati Sharma, Kenichiro Doi, Shailaja Hegde, Su-Fern Tan, Laura M Geffert, Todd E Fox, Arun K Sharma, Dhimant Desai, Shantu Amin, Mark Kester, Thomas P Loughran, Robert F Paulson, David F Claxton, Hong-Gang Wang, Jong K Yun
AIM: To further characterize the selectivity, mechanism-of-action and therapeutic efficacy of the novel small molecule inhibitor, SKI-178. METHODS: Using the state-of-the-art Cellular Thermal Shift Assay (CETSA) technique to detect "direct target engagement" of proteins intact cells, in vitro and in vivo assays, pharmacological assays and multiple mouse models of acute myeloid leukemia (AML). RESULTS: Herein, we demonstrate that SKI-178 directly target engages both Sphingosine Kinase 1 and 2...
July 2017: Cancer Translational Medicine
https://www.readbyqxmd.com/read/28681918/microrna-137-is-negatively-associated-with-clinical-outcome-and-regulates-tumor-development-through-ezh2-in-cervical-cancer
#12
Huimin Zhang, Ting Yan, Zhijun Liu, Jun Wang, Yu Lu, Donglin Li, Wentong Liang
PURPOSE: We intend to evaluate the expression, clinical relevance and functional role of microRNA-137 (miR-137) in human cervical cancer (CC). METHODS: MiR-137 expressions were assessed by qPCR in CC cell lines and human CC tumors. The correlation between endogenous miR-137 expression and CC Patients' postoperative overall survival was examined statistically. CC cell lines, Ca-Ski and SiHa cells were transduced with lentivirus to ectopically upregulate endogenous miR-137 expressions...
July 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28627406/multi-omics-facilitated-variable-selection-in-cox-regression-model-for-cancer-prognosis-prediction
#13
Cong Liu, Xujun Wang, Georgi Z Genchev, Hui Lu
MOTIVATION: New developments in high-throughput genomic technologies have enabled the measurement of diverse types of omics biomarkers in a cost-efficient and clinically-feasible manner. Developing computational methods and tools for analysis and translation of such genomic data into clinically-relevant information is an ongoing and active area of investigation. For example, several studies have utilized an unsupervised learning framework to cluster patients by integrating omics data...
July 15, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28611495/antibacterial-anticancer-and-neuroprotective-activities-of-rare-actinobacteria-from-mangrove-forest-soils
#14
Adzzie-Shazleen Azman, Iekhsan Othman, Chee-Mun Fang, Kok-Gan Chan, Bey-Hing Goh, Learn-Han Lee
Mangrove is a complex ecosystem that contains diverse microbial communities, including rare actinobacteria with great potential to produce bioactive compounds. To date, bioactive compounds extracted from mangrove rare actinobacteria have demonstrated diverse biological activities. The discovery of three novel rare actinobacteria by polyphasic approach, namely Microbacterium mangrovi MUSC 115(T), Sinomonas humi MUSC 117(T) and Monashia flava MUSC 78(T) from mangrove soils at Tanjung Lumpur, Peninsular Malaysia have led to the screening on antibacterial, anticancer and neuroprotective activities...
June 2017: Indian Journal of Microbiology
https://www.readbyqxmd.com/read/28577497/microrna-505-predicts-prognosis-and-acts-as-tumor-inhibitor-in-cervical-carcinoma-with-inverse-association-with-fzd4
#15
Chunhua Ma, Baomei Xu, Sulaiya Husaiyin, Lin Wang, Kunduozi Wusainahong, Jin Ma, Kaichun Zhu, Mayinuer Niyazi
PURPOSE: We investigated the expression and mechanisms of microRNA-505 (miR-505) and its downstream target gene Frizzled-4 (FZD4) in cervical cancer. METHODS: miR-505 expression was evaluated by qRT-PCR in cervical cancer cell lines and human carcinomas. Cancer patients' clinicopathological factors and survival were analyzed based on their tumorous miR-505 levels. Ca-Ski and HeLa cells were transduced with lentivirus to upregulate or downregulate miR-505. Their impacts on cervical cancer were evaluated by in vitro proliferation, invasion and in vivo tumorigenicity assays, respectively...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28521287/5azadc-treatment-upregulates-mir-375-level-and-represses-hpv16-e6-expression
#16
Adrien Morel, Aurélie Baguet, Jérôme Perrard, Caroline Demeret, Elise Jacquin, David Guenat, Christiane Mougin, Jean-Luc Prétet
High-risk human papillomaviruses are the etiological agents of cervical cancer and HPV16 is the most oncogenic genotype. Immortalization and transformation of infected cells requires the overexpression of the two viral oncoproteins E6 and E7 following HPV DNA integration into the host cell genome. Integration often leads to the loss of the E2 open reading frame and the corresponding protein can no longer act as a transcriptional repressor on p97 promoter. Recently, it has been proposed that long control region methylation also contributes to the regulation of E6/E7 expression...
July 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28487767/inducement-of-apoptosis-by-cucurbitacin-e-a-tetracyclic-triterpenes-through-death-receptor-5-in-human-cervical-cancer-cell-lines
#17
Ya-Min Cheng, Ching-Ju Shen, Chi-Chang Chang, Cheng-Yang Chou, Ching-Chou Tsai, Yi-Chiang Hsu
Cervical cancer is the most common malignancy in women, for which conization or hysterectomy are the main therapy. Curcubitacin E (Cu E) is a natural compound-based drug which from the Guadi (climbing stem of Cucumic melo L). Previously shown to be an anti-tumor as well as a potent chemopreventive agent against several types of tumors. The present study, investigated anti-proliferation and apoptosis induced by Cu E in cervical cancer cell lines (HeLa and Ca Ski). The results indicate that the cytotoxicity is associated with accumulation in apoptosis but not necrosis...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28433634/dual-sphingosine-kinase-inhibitor-ski-ii-enhances-sensitivity-to-5-fluorouracil-in-hepatocellular-carcinoma-cells-via-suppression-of-osteopontin-and-fak-igf-1r-signalling
#18
Petra Grbčić, Ivana Tomljanović, Marko Klobučar, Sandra Kraljević Pavelić, Ksenija Lučin, Mirela Sedić
Hepatocellular carcinoma (HCC) represents the third leading cause of cancer-related deaths globally. Although 5-Fluorouracil (5-FU) is used as the first choice treatment for advanced HCC, it exerts poor efficacy and is associated with acquired and intrinsic resistance. Sphingosine kinases (Sphk) 1 and 2 play tumour-promoting roles in different cancer types including HCC and thus represent promising pharmacological targets. In the present study, we have investigated for the first time the anticancer efficacy and underlying molecular mechanisms of combined administration of 5-FU and dual Sphk1/Sphk2 inhibitor SKI-II (4-[[4-(4-chlorophenyl)-1,3-thiazol-2-yl]amino]phenol) in HepG2 hepatocellular carcinoma cells...
June 10, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28405684/sphk1-modulates-cell-migration-and-emt-related-marker-expression-by-regulating-the-expression-of-p-fak-in-colorectal-cancer-cells
#19
Chun-Yan Xu, Shi-Quan Liu, Meng-Bin Qin, Chun-Feng Zhuge, Lin Qin, Nan Qin, Ming-Yu Lai, Jie-An Huang
Sphingosine kinase 1 (SphK1) plays an important role in colorectal carcinoma metastasis. However, whether SphK1 modulates epithelial-mesenchymal transition (EMT)-related marker expression and the underlying mechanisms remain unclear. In this study, in order to clarify this issue, we used various colorectal cancer (CRC) cell lines, Caco2, HT29, RKO and HCT116. Each of the cell lines was divided into 3 groups as follows: the control group, SKI-Ⅱ (SphK1 inhibitor) group and PF-562271 [focal adhesion kinase (FAK) inhibitor] group...
May 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28398634/ski-regulates-smads-and-taz-signaling-to-suppress-lung-cancer-progression
#20
Mian Xie, Xiaojun Wu, Jinjun Zhang, Jiexia Zhang, Xiangxiang Li
Ski, the transforming protein of the avian Sloan-Kettering retrovirus, displays both pro- and anti-oncogenic activities in human cancer. The mechanisms underlying these conflicting observations have not been fully understood. Herein, we investigated the mechanism underlying the tumor suppressor activity of Ski. To investigate the effect of Ski re-activation on TGF-β and Hippo/TAZ pathway, we measured its effect on the endogenous Smad target genes (PAI-1 and P15(INK4B) ) and TAZ target gene CTGF. The results revealed that Ski exerted its inhibitory activity in TGF-β1/Smad signaling pathway...
October 2017: Molecular Carcinogenesis
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