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https://www.readbyqxmd.com/read/28454413/na7crcuw11o39-16h2o-induces-apoptosis-in-human-ovarian-cancer-skov3-cells-through-the-p38-signaling-pathway
#1
Hai-Ying Liu, Xiu-Li Pan, Jia-Nan Tian, Hui Sun, Qing Huan, Yu-Ling Huang, Jian-Qiao Liu
Ovarian carcinoma is a common malignant disease worldwide with a poor therapeutic response. The present study investigated the effects of Na7CrCuW11O39.16H2O (CrCuW11) on ovarian cancer cell growth and investigated the mechanisms underlying its actions. The effects of CrCuW11 on cell viability and apoptosis were measured by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, acridine orange/ethidium bromide staining and electron microscopy in human ovarian cancer SKOV3 cells. The expression of bcl-2-like protein 4 (Bax), B-cell lymphoma 2 (Bcl-2), cytochrome c, phosphorylated (p)-p38 and p38 was determined by western blot analysis...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454373/inhibition-of-cyfip2-promotes-gastric-cancer-cell-proliferation-and-chemoresistance-to-5-fluorouracil-through-activation-of-the-akt-signaling-pathway
#2
Shuhua Jiao, Nuo Li, Shuang Cai, Haimei Guo, Yanhui Wen
Gastric cancer is a common gastrointestinal malignancy that accounts for a notable proportion of cancer-associated mortalities worldwide. Cytoplasmic fragile X mental retardation 1-interacting protein 2 (CYFIP2) is a novel p53-mediated pro-apoptotic protein whose expression is decreased in gastric cancer. However, whether decreased expression of CYFIP2 contributes to gastric carcinogenesis remains unclear. In order to mimic in vivo gastric tumor CYFIP2 expression levels, the present study used short hairpin RNA targeting CYFIP2 mRNA to silence CYFIP2 expression in MGC803 and SGC7901 gastric cancer cells...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454371/synergistic-effects-of-a-novel-lipid-soluble-extract-from-pinellia-pedatisecta-schott-and-cisplatin-on-human-cervical-carcinoma-cell-lines-through-the-regulation-of-dna-damage-response-signaling-pathway
#3
Mingxing Zhang, Hongwei Zhang, Yi Yu, Haixia Huang, Guiling Li, Congjian Xu
Herbal medicines have been recognized as an attractive approach for cancer therapy with minimal side effects. The present study investigated the type of interaction between a novel lipid-soluble extract from Pinellia pedatisecta Schott (PE) and cisplatin (CDDP) on human cervical cancer SiHa and CaSki cell lines in vitro. The mechanism of this combination was studied using cell proliferation, invasion and apoptosis assays, and by analyzing cell cycle distribution and protein expression, with a focus on DNA damage response (DDR) activation...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454362/growth-of-tyrosine-kinase-inhibitor-resistant-philadelphia-positive-acute-lymphoblastic-leukemia-role-of-bone-marrow-stromal-cells
#4
Cheng Zhang, Xi Zhang, Shi-Jie Yang, Xing-Hua Chen
Human bone marrow stromal cells (hBMSCs) may contribute to the growth of tyrosine kinase inhibitor (TKI)-resistant chronic myelogenous leukemia (CML). However, there are certain differences in biology between CML and Philadelphia-positive acute lymphoblastic leukemia (Ph(+) ALL). Little is known about the role and mechanism of hBMSCs on the growth of TKI-resistant Ph(+) ALL. The current study co-cultured hBMSCs with the TKI-resistant SUP-B15. Next, the proliferation of SUP-B15 was detected using a Cell Counting Kit-8...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454357/expression-regulation-and-function-of-mir-495-in-healthy-and-tumor-tissues
#5
Hongli Chen, Xiaman Wang, Ju Bai, Aili He
MicroRNA-495 (miR-495) is a small non-coding RNA encoded by a gene located on chromosome 14 (14q32.31). Its expression is regulated by the transcription factors EF12 and EF47, in addition to promoter methylation status and the fusion oncoprotein mixed-lineage leukemia-AF9. Previous studies suggest that miR-495 is involved in various developmental, immunological and inflammatory processes in healthy tissue, and in the proliferation, invasion, metastasis and drug resistance of cancer cells. The role miR-495 serves in tumors is controversial...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454309/targeting-cd146-in-combination-with-vorinostat-for-the-treatment-of-ovarian-cancer-cells
#6
Xiaoli Ma, Jiandong Wang, Jia Liu, Qingqing Mo, Xiyun Yan, Ding Ma, Hua Duan
Drug resistance is the predominant cause of mortality in late-stage patients with ovarian cancer. Histone deacetylase inhibitors (HDACis) have emerged as a novel type of second line drug with high specificity for tumor cells, including ovarian cancer cells. However, HDACis usually exhibit relatively low potencies when used as a single agent. The majority of current clinical trials are combination strategies. These strategies are more empirical than mechanism-based applications. Previously, it was reported that the adhesion molecule cluster of differentiation 146 (CD146) is significantly induced in HDACi-treated tumor cells...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454303/expression-of-er%C3%AE-gene-in-breast-carcinoma-and-the-relevance-in-neoadjuvant-therapy
#7
Jing Chang, Jihong Liu, Huiying Li, Jing Li, Yanling Mu, Bin Feng
In the present study, we examined the expression of the estrogen receptor β (ERβ) gene in breast cancer and its relevance in neoadjuvant therapy. In total, 120 breast cancer patients who were hospitalized in the Departments of Breast Disease and Medical Oncology served as the subjects of this study. The subjects were diagnosed with breast cancer phase II to phase IIIA, as confirmed by aspiration biopsy and iconography. The patients were divided into two groups in a randomized control manner, with 60 patients in each group...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454291/thioridazine-has-potent-antitumor-effects-on-lung-cancer-stem-like-cells
#8
Jiani Shen, Buyun Ma, Xinmin Zhang, Xiaozhu Sun, Jiancui Han, Yigang Wang, Liang Chu, Haineng Xu, Yu Yang
Thioridazine (TDZ), originally an anti-psychotic drug, suppresses several types of cancer and has specificity for leukemia stem cells. The present study was performed to assess its effect on lung cancer stem-like cells, as its effect remains unknown. TDZ was utilized to treat lung cancer stem-like cells (A549 sphere cells) and its cytotoxic effect and mechanism were evaluated in vitro and in vivo. TDZ elicited cytotoxicity in A549 sphere cells and inhibited their proliferation in a dose-dependent pattern. A549 sphere cells treated with TDZ showed nuclear fragmentation, increased G0/G1 phase distribution, positive Annexin V staining, and a change in the expression of caspase family and cell cycle-associated proteins...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454283/targeting-of-growth-factors-in-the-treatment-of-hepatocellular-carcinoma-the-potentials-of-polysaccharides
#9
Xuan Wang, Jieyu Ding, Yuanyuan Feng, Lingling Weng, Guangqiang Zhao, Jianfeng Xiang, Minguang Zhang, Dongwei Xing
Hepatocellular carcinoma (HCC) has become a leading cause of cancer-associated mortality worldwide and is thus of great concern. Although various chemotherapeutic drugs are currently used for the treatment of HCC, severe side effects associated with these treatments have prompted interest in novel therapies, including the use of certain biological macromolecules such as polysaccharides. Several studies have shown that polysaccharides have anticancer and antiproliferative effects on HCC. Vascular endothelial growth factor, transforming growth factor β, epidermal growth factor and fibroblast growth factor may be effective targets for polysaccharides and may modulate tumor growth and immunity through increasing the expression levels of cytokines...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454276/microrna-134-reverses-multidrug-resistance-in-human-lung-adenocarcinoma-cells-by-targeting-foxm1
#10
Jipeng Li, Ying Chen, Mingwei Jin, Jianhua Wang, Shanfeng Li, Zhe Chen, Wanjun Yu
Multidrug resistance (MDR) is the primary barrier to the success of chemotherapy for lung adenocarcinoma. MicroRNA (miR)-134, which is downregulated in lung adenocarcinoma, influences cell proliferation, apoptosis and invasion of lung adenocarcinoma. However, the function of miR-134 in the MDR of lung adenocarcinoma remains unclear. In the present study, it was identified that miR-134 expression is significantly downregulated in A549/cisplatin MDR lung adenocarcinoma cells, as compared with A549 parental cells...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454274/role-of-endoplasmic-reticulum-stress-on-cisplatin-resistance-in-ovarian-carcinoma
#11
Jing Tian, Rong Liu, Quanxin Qu
Endoplasmic reticulum (ER) is an essential site of cellular homeostasis regulation. ER stress (ERS) may induce autophagy in tumor cells that escape from apoptosis. The present study examined the effects and mechanism of ERS on cisplatin (DDP) sensitivity in ovarian carcinoma. SKOV3 tumor cells treated with Saquinavir were subjected to western blot and reverse transcription-quantitative polymerase chain reaction analysis to determine protein and messenger RNA (mRNA) expression levels of mechanistic target of rapamycin (mTOR) and Beclin 1...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454260/k9-c4h4fn2o2-2nd-pw11o39-2%C3%A2-25h2o-induces-apoptosis-in-human-lung-cancer-a549-cells
#12
Rong-Yao Xia, Ran-Ran Zhang, Zhe Jiang, Ya-Jiao Sun, Jing Liu, Fu-Hui Chen
Lung cancer is the leading cause of cancer-associated mortality worldwide. The present study investigated the effects of K9(C4H4FN2O2)2Nd(PW11O39)2·25H2O (FNdPW), a chemically synthesized polyoxometalate that contains rare earth elements, on lung cancer growth, and explored the mechanism underlying its actions. The effects of FNdPW on the cell viability and apoptosis of human lung cancer A549 cells were measured using MTT assay, acridine orange/ethidium bromide staining and electron microscopy. The expression of apoptosis-related proteins, including B-cell lymphoma (Bcl)-2-associated death promoter (Bad), phosphorylated (p)-Bad, X-linked inhibitor of apoptosis (XIAP), apoptosis-inducing factor (AIF), Bcl-2-associated X protein (Bax) and Bcl-2, was determined by western blotting...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454214/genome-wide-analysis-of-gynecologic-cancer-the-cancer-genome-atlas-in-ovarian-and-endometrial-cancer
#13
Moito Iijima, Kouji Banno, Ryuichiro Okawa, Megumi Yanokura, Miho Iida, Takashi Takeda, Haruko Kunitomi-Irie, Masataka Adachi, Kanako Nakamura, Kiyoko Umene, Yuya Nogami, Kenta Masuda, Eiichiro Tominaga, Daisuke Aoki
Cancer typically develops due to genetic abnormalities, but a single gene abnormality cannot completely account for the onset of cancer. The Cancer Genome Atlas (CGA) project was conducted for the cross-sectional genome-wide analysis of numerous genetic abnormalities in various types of cancer. This approach has facilitated the identification of novel AT-rich interaction domain 1A gene mutations in ovarian clear cell carcinoma, frequent tumor protein 53 (TP53) gene mutations in high-grade ovarian serous carcinoma, and Kirsten rat sarcoma and B-rapidly accelerated fibrosarcoma proto-oncogene, serine/threonine kinase gene mutations in low-grade ovarian serous carcinoma...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454119/anti-proliferative-and-anti-secretory-effects-of-everolimus-on-human-pancreatic-neuroendocrine-tumors-primary-cultures-is-there-any-benefit-from-combination-with-somatostatin-analogs
#14
Amira Mohamed, David Romano, Alexandru Saveanu, Catherine Roche, Manuela Albertelli, Federica Barbieri, Thierry Brue, Patricia Niccoli, Jean-Robert Delpero, Stephane Garcia, Diego Ferone, Tullio Florio, Vincent Moutardier, Flora Poizat, Anne Barlier, Corinne Gerard
Therapeutic management of gastroenteropancreatic neuroendocrine tumors (GEP-NETs) is challenging. The mammalian target of rapamycin (mTOR) inhibitor everolimus recently obtained approval from the Food and Drug Administration for the treatment of patients with advanced pancreatic neuroendocrine tumors (pNETs). Despite its promising antitumor efficacy observed in cell lines, clinical benefit for patients is unsatisfactory. The limited therapeutic potential of everolimus in cancer cells has been attributed to Akt activation due to feedback loops relief following mTOR inhibition...
April 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28454100/a-mathematical-theory-of-the-transcription-repression-tr-therapy-of-cancer-whether-and-how-it-may-work
#15
Yuxin Chen, Haijun Wen, Chung-I Wu
Transcription repression (TR) therapy of cancer has been widely discussed. Here, TR refers to global repression of transcription rather than specific targeting of cancer-causing genes such as MYC. TR drugs inhibit transcription by binding to the transcribed DNA or to RNA polymerase; for example, actinomycin D has been extensively used in research and therapy to shut down transcription globally [1-7]. As proliferating cells demand a high rate of transcription, restricting transcript production could be effective in slowing down cell proliferation...
April 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28454098/the-impact-of-receptor-recycling-on-the-exocytosis-of-%C3%AE-v%C3%AE-3-integrin-targeted-gold-nanoparticles
#16
Yanan Cui, Xiaoning Song, Suxin Li, Bing He, Lan Yuan, Wenbing Dai, Hua Zhang, Xueqing Wang, Bin Yang, Qiang Zhang
Among the diverse factors that may influence the therapeutic outcomes, the exocytosis of targeted drug delivery systems (TDDS) and its relationship with the corresponding receptor receive little attentions. In this study, cRGDfK modified gold nanoparticles (cRGDfK-PEG-AuNPs) were synthesized, and their cellular transportation including endocytosis and exocytosis, as well as the potential relations with αvβ3 integrin were carefully studied. The results showed that the enhanced and fast internalization of cRGDfK-PEG-AuNPs into U87 cells was associated with the high expression level of αvβ3 integrin...
April 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28454066/direct-measurement-of-igm-antigen-interaction-energy-on-individual-red-blood-cells
#17
Natasha Yeow, Rico F Tabor, Gil Garnier
Most blood grouping tests rely on the principle of red blood cells (RBCs) agglutination. Agglutination is triggered by the binding of specific blood grouping antibodies to the corresponding RBC surface antigen on multiple cells. The interaction energies between blood grouping antibodies and antigens have been poorly defined in immunohaematology. Here for the first time, we functionalized atomic force microscope (AFM) cantilevers with the IgM form of blood grouping antibodies to probe populations of individual RBCs of different groups under physiological conditions...
April 21, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28454045/canadian-harm-reduction-policies-a-comparative-content-analysis-of-provincial-and-territorial-documents-2000-2015
#18
REVIEW
T Cameron Wild, Bernie Pauly, Lynne Belle-Isle, Walter Cavalieri, Richard Elliott, Carol Strike, Kenneth Tupper, Andrew Hathaway, Colleen Dell, Donald MacPherson, Caitlin Sinclair, Kamagaju Karekezi, Benjamin Tan, Elaine Hyshka
BACKGROUND: Access to harm reduction interventions among substance users across Canada is highly variable, and largely within the policy jurisdiction of the provinces and territories. This study systematically described variation in policy frameworks guiding harm reduction services among Canadian provinces and territories as part of the first national multimethod case study of harm reduction policy. METHODS: Systematic and purposive searches identified publicly-accessible policy texts guiding planning and organization of one or more of seven targeted harm reduction services: needle distribution, naloxone, supervised injection/consumption, low-threshold opioid substitution (or maintenance) treatment, buprenorphine/naloxone (suboxone), drug checking, and safer inhalation kits...
April 25, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28453915/documenting-and-harnessing-the-biological-potential-of-molecules-in-distributed-drug-discovery-d3-virtual-catalogs
#19
Milata M Abraham, Ryan E Denton, Richard W Harper, William L Scott, Martin J O'Donnell, Jacob D Durrant
Virtual molecular catalogs have limited utility if member compounds are (1) difficult to synthesize or (2) unlikely to have biological activity. The Distributed Drug Discovery (D3) program addresses the synthesis challenge by providing scientists with a free virtual D3 catalog of 73,024 easy-to-synthesize N-acyl unnatural α-amino acids, their methyl esters, and primary amides. The remaining challenge is to document and exploit the bioactivity potential of these compounds. In the current work, a search process is described that retrospectively identifies all virtual D3 compounds classified as bioactive hits in PubChem-cataloged experimental assays...
April 28, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28453640/pioneering-topological-methods-for-network-based-drug-target-prediction-by-exploiting-a-brain-network-self-organization-theory
#20
Claudio Durán, Simone Daminelli, Josephine M Thomas, V Joachim Haupt, Michael Schroeder, Carlo Vittorio Cannistraci
The bipartite network representation of the drug-target interactions (DTIs) in a biosystem enhances understanding of the drugs' multifaceted action modes, suggests therapeutic switching for approved drugs and unveils possible side effects. As experimental testing of DTIs is costly and time-consuming, computational predictors are of great aid. Here, for the first time, state-of-the-art DTI supervised predictors custom-made in network biology were compared-using standard and innovative validation frameworks-with unsupervised pure topological-based models designed for general-purpose link prediction in bipartite networks...
April 26, 2017: Briefings in Bioinformatics
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