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https://www.readbyqxmd.com/read/28324583/revisiting-cdk-inhibitors-for-treatment-of-glioblastoma-multiforme
#1
REVIEW
Dorota Lubanska, Lisa Porter
Despite extensive efforts and continual progress in research and medicine, outcomes for patients with high-grade glioma remain exceptionally poor. Over the past decade, research has revealed a great deal about the complex biology behind glioma development, and has brought to light some of the major barriers preventing successful treatment. Glioblastoma multiforme (GBM) (stage 4 astrocytoma) is a highly dynamic tumour and one of the most extreme examples of intratumoural heterogeneity, making targeting with specific therapeutics an inefficient and highly unpredictable goal...
March 21, 2017: Drugs in R&D
https://www.readbyqxmd.com/read/28323520/anti-proliferation-effect-of-guanosine-on-hct-116-cells-involves-mapk-and-ampk-pathways
#2
Wuen Yew Teoh, Norhanom Abdul Wahab, Kae Shin Sim
This study aims to investigate the mechanisms associated with the anti-proliferation effect of guanosine on human colon carcinoma HCT 116 cells. In this study, guanosine induced more drastic cell cycle arrest effect than cell death effect on HCT 116 cells. The cell cycle arrest effect of guanosine on HCT 116 cells appeared to be associated with the increased activation of mitogen-activated protein kinases (MAPK) such as ERK1/2, p38 and JNK. The decreased of AMP-activated protein kinase (AMPK) activation and cyclin D1 expression was also involved...
March 21, 2017: Nucleosides, Nucleotides & Nucleic Acids
https://www.readbyqxmd.com/read/28323497/potential-mechanisms-underlying-cdk5-related-osteosarcoma-progression
#3
Hang-Xing Bao, Qing Bi, Yong Han, Chen Zhao, Hai Zou
OBJECTIVES: Identification of new prognostic biomarkers and therapeutic targets is of crucial importance for patients with osteosarcoma. Cyclin-dependent kinase 5 (CDK5) is overexpressed in several tumor types. However, the exact role CDK5 plays in osteosarcoma is still unknown. METHODS: In this study, we explored the association between CDK5 expression and the prognosis of osteosarcoma patients using publicly available gene expression datasets. Potential molecular mechanisms underlying its pro-malignant role in cancer progression were also discussed...
March 21, 2017: Expert Opinion on Therapeutic Targets
https://www.readbyqxmd.com/read/28323486/enterolactone-induces-g1-phase-cell-cycle-arrest-in-nonsmall-cell-lung-cancer-cells-by-downregulating-cyclins-and-cyclin-dependent-kinases
#4
Shireen Chikara, Kaitlin Lindsey, Harsharan Dhillon, Sujan Mamidi, Jeffrey Kittilson, Melpo Christofidou-Solomidou, Katie M Reindl
Flaxseed is a rich source of the plant lignan secoisolariciresinol diglucoside (SDG), which is metabolized into mammalian lignans enterodiol (ED) and enterolactone (EL) in the digestive tract. The anticancer properties of these lignans have been demonstrated for various cancer types, but have not been studied for lung cancer. In this study, we investigated the anticancer effects of EL for several nonsmall cell lung cancer (NSCLC) cell lines of various genetic backgrounds. EL inhibited the growth of A549, H441, and H520 lung cancer cells in concentration- and time-dependent manners...
March 21, 2017: Nutrition and Cancer
https://www.readbyqxmd.com/read/28320094/lncrna-meg3-had-anti-cancer-effects-to-suppress-pancreatic-cancer-activity
#5
Lei Gu, Jiaqiang Zhang, Minmin Shi, Qian Zhan, Baiyong Shen, Chenghong Peng
AIM: The aim of this study was to explain the mechanism of lncRNA MEG 3 in pancreatic cancer. METHODS: We were collecting 30 pancreatic cancer patients, taking the sample from these patients. We measured the PI3K protein expressions from 30 patients by IHC and WB methods and MEG 3 expression by RT-PCR, and analyzed the relationship between PI3K protein expression and pancreatic cancer patients' clinical pathology and the correlation between lncRNA MEG 3 and PI3K...
March 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28319828/genistein-affects-proliferation-and-migration-of-bovine-oviductal-epithelial-cells
#6
Daniela C García, Pablo A Valdecantos, Dora C Miceli, Mariela Roldán-Olarte
Genistein is one of the most abundant isoflavones in soybean. This molecule induces cell cycle arrest and apoptosis in different normal and cancer cells. Genistein has been of considerable interest due to its adverse effects on bovine reproduction, altering estrous cycle, implantation and fetal development and producing subfertility or infertility. The objective of this work was to study the effects of genistein on the expression of selected genes involved in the regulation of cell cycle and apoptosis. Primary cultures of bovine oviductal epithelial cells (BOEC) were treated with different genistein concentrations (0...
March 8, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28319570/microcystic-elongated-and-fragmented-pattern-invasion-in-ovarian-endometrioid-carcinoma-immunohistochemical-profile-and-prognostic-implications
#7
Allison Goldberg, Lauren Hand, Dan DeCotiis, Norman Rosenblum, Joanna Chan
Microcystic, elongated, and fragmented (MELF) pattern invasion is a poor prognostic indicator in uterine endometrioid carcinoma, but its existence, biology, and prognostic value have not been described in ovarian endometrioid carcinoma. We evaluated cases of ovarian endometrioid carcinoma without synchronous uterine endometrioid carcinoma for MELF and other histologic features. To evaluate tumor biology, we assessed an immunohistochemical profile, including MLH1, PMS2, MSH2, MSH6, β-catenin, e-cadherin, CK19, and cyclin D1...
March 17, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28319064/oct4-controls-mitotic-stability-and-inactivates-the-rb-tumor-suppressor-pathway-to-enhance-ovarian-cancer-aggressiveness
#8
E Comisso, M Scarola, M Rosso, S Piazza, S Marzinotto, Y Ciani, M Orsaria, L Mariuzzi, C Schneider, S Schoeftner, R Benetti
OCT4 (Octamer-binding transcription factor 4) is essential for embryonic stem cell self-renewal. Here we show that OCT4 increases the aggressiveness of high-grade serous ovarian cancer (HG-SOC) by inactivating the Retinoblastoma tumor suppressor pathway and enhancing mitotic stability in cancer cells. OCT4 drives the expression of Nuclear Inhibitor of Protein Phosphatase type 1 (NIPP1) and Cyclin F (CCNF) that together inhibit Protein Phosphatase 1 (PP1). This results in pRB hyper-phosphorylation, accelerated cell proliferation and increased in vitro tumorigenicity of ovarian cancer cells...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28319060/the-anti-diabetic-drug-exenatide-a-glucagon-like-peptide-1-receptor-agonist-counteracts-hepatocarcinogenesis-through-camp-pka-egfr-stat3-axis
#9
M Zhou, M T S Mok, H Sun, A W Chan, Y Huang, A S L Cheng, G Xu
Epidemiological studies have demonstrated a close association of type 2 diabetes and hepatocellular carcinoma (HCC). Exenatide (Ex-4), a potent diabetes drug targeting glucagon-like peptide-1 receptor (GLP-1R), is protective against non-alcoholic fatty liver disease (NAFLD). However, the Ex-4 function and GLP-1R status have yet been explored in HCC. Herein we investigated the effect of Ex-4 in diethylnitrosamine (DEN)-treated mice consuming control or high-fat high-carbohydrate diet. Administration of Ex-4 significantly improved obesity-induced hyperglycemia and hyperlipidemia and reduced HCC multiplicity in obese DEN-treated mice, in which suppressed proliferation and induced apoptosis were confined to tumor cells...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28318508/effects-of-novel-brominated-flame-retardant-tbph-and-its-metabolite-tbmehp-on-human-vascular-endothelial-cells-implication-for-human-health-risks
#10
Ping Xiang, Rong-Yan Liu, Hong-Jie Sun, Yun-Wen Yang, Xin-Yi Cui, Lena Q Ma
As a replacement for polybrominated diphenyl ethers, bis-(2-ethylhexyl) tetrabromophthalate (TBPH) is widely used as a novel flame retardant and has been detected in many environmental matrix including human blood. TBPH can be metabolized into mono-(2-ethyhexyl) tetrabromophthalate (TBMEHP) by carboxylesterase. However, their adverse effects on human vascular endothelium and their potential impacts on human cardiovascular disease are unknown. In this study, their adverse effects and associated molecular mechanisms on human vascular endothelial cells (HUVECs) were investigated...
March 16, 2017: Environmental Research
https://www.readbyqxmd.com/read/28318374/identification-and-characterization-of-the-bmcyclin-l1-bmcdk11a-b-complex-in-relation-to-cell-cycle-regulation
#11
Tai-Hang Liu, Yun-Fei Wu, Xiao-Long Dong, Cai-Xia Pan, Guo-Yu Du, Ji-Gui Yang, Wei Wang, Xi-Yan Bao, Peng Chen, Min-Hui Pan, Cheng Lu
Cyclin proteins are the key regulatory and activity partner of cyclin-dependent kinases (CDKs), which play pivotal regulatory roles in cell cycle progression. In the present study, we identified a Cyclin L1 and two CDK11 two CDK11 splice variants, CDK11A and CDK11B, from silkworm, Bombyx mori. We determined that both Cyclin L1 and CDK11A/B are nuclear proteins, and further investigations were conducted to elucidate their spatiofunctional features. Cyclin L1 forms a complex with CDK11A/B and were co-localized to the nucleus...
March 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28318165/-effects-of-rhoa-silencing-on-proliferation-of-tongue-squamous-cancer-cells
#12
Yan Guoxin, Fan Bing, Zou Ronghai, Zhang Jian, Sun Xiaofeng, Tong Lei, Wang Qimin, Han Jinhong, Lu Xufei, Wang Ying, Zhou Yuan, He Zongxuan, Liao Yixiang, Li Ning, Cao Lei, Chen Zhenggang
OBJECTIVE: This study investigated the effect of RhoA silencing through RNA interference on proliferation and growth of tongue cancer cells, as well as explored the possible mechanisms of this effect. METHODS: SSC-4 tongue cancer cells were cultured in vitro and then transfected with small interfering RNA to knock down RhoA expression. The tested cells were divided into three groups: experimental group (experimental group 1: transfected with RhoA-siRNA-1; experi-mental group 2: transfected with RhoA-siRNA-2), negative control group (transfected by random sequence NC-siRNA), and blank control group (transfected with Lipofectamine)...
December 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28317869/genetic-association-between-the-cyclin-dependent-kinase-inhibitor-gene-p27-kip1-polymorphism-rs34330-and-cancer-susceptibility-a-meta-analysis
#13
Xiao-Ke Cheng, Xue-Jun Wang, Xiao-Dong Li, Xue-Qun Ren
The p27 rs34330 (-79C/T) polymorphism has been widely studied for human cancer susceptibility. The current findings, however, still remained controversial. Therefore, we performed the meta-analysis to provide a more accurate result. Eligible studies were identified from PubMed database up to June 2015. The association of p27 rs34330 polymorphism and cancer susceptibility was estimated with odds ratios and corresponding 95% confidence intervals. The meta-analysis was performed with Stata 12. A total of ten studies with 11,214 cases and more than 8,776 controls were included in the meta-analysis (including breast, lung, thyroid, endometrial, and hepatocellular cancer)...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317244/juxtaglomerular-cell-tumor-clinical-and-immunohistochemical-features
#14
Fen Wang, Chuan Shi, Yunying Cui, Chunyan Li, Anli Tong
Juxtaglomerular cell tumor (JGCT) is a rare tumor, with approximately 100 cases reported in the literature. The authors respectively studied the clinical data of 11 patients diagnosed with JGCT in Peking Union Medical College Hospital from 2004 to 2014, and investigated the immunohistochemical profiles in 10 tumors. Nine of the 11 patients were diagnosed before the age of 40 years. Hypertension was present in all patients, while hypokalemia occurred in seven of 11 patients. Computed tomography detected JGCTs with a sensitivity of 100%...
March 20, 2017: Journal of Clinical Hypertension
https://www.readbyqxmd.com/read/28315691/mir-519-suppresses-nasopharyngeal-carcinoma-cell-proliferation-by-targeting-oncogene-urg4-urgcp
#15
Guodong Yu, Tian Zhang, Ying Jing, Qingmin Bao, Qiang Tang, Yu Zhang
Nasopharyngeal carcinoma (NPC) is one of the most common malignant tumor in Southeast Asia, its regulatory mechanism is still to be understood. miR-519 inhibits the progression of several tumors, including cervical cancer, ovarian cancer and gastric cancer. But its role in NPC hasn't been studied. In present study, we found miR-519 was downregulated in NPC cells, its overexpression inhibited NPC cell proliferation and arrested cell cycle at G0/G1 phase, while its knockdown promoted NPC cell proliferation and cell cycle progression...
March 15, 2017: Life Sciences
https://www.readbyqxmd.com/read/28315333/triiodothyronine-promotes-the-proliferation-of-epicardial-progenitor-cells-through-the-mapk-erk-pathway
#16
Song-Bai Deng, Xiao-Dong Jing, Xiao-Ming Wei, Jian-Lin Du, Ya-Jie Liu, Qin Qin, Qiang She
Thyroid hormone has important functions in the development and physiological function of the heart. The aim of this study was to determine whether 3,5,3'-Triiodothyronine (T3) can promote the proliferation of epicardial progenitor cells (EPCs) and to investigate the potential underlying mechanism. Our results showed that T3 significantly promoted the proliferation of EPCs in a concentration- and time-dependent manner. The thyroid hormone nuclear receptor inhibitor bisphenol A (100 μmol/L) did not affect T3's ability to induce proliferation...
March 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28315328/tead4-yap-interaction-regulates-tumoral-growth-by-controlling-cell-cycle-arrest-at-the-g1-phase
#17
Shin Takeuchi, Atsushi Kasamatsu, Masanobu Yamatoji, Dai Nakashima, Yosuke Endo-Sakamoto, Nao Koide, Toshikazu Takahara, Toshihiro Shimizu, Manabu Iyoda, Katsunori Ogawara, Masashi Shiiba, Hideki Tanzawa, Katsuhiro Uzawa
TEA domain transcription factor 4 (TEAD4), which has critical functions in the process of embryonic development, is expressed in various cancers. However, the important role of TEAD4 in human oral squamous cell carcinomas (OSCCs) remain unclear. Here we investigated the TEAD4 expression level and the functional mechanism in OSCC using quantitative reverse transcriptase-polymerase chain reaction, Western blot analysis, and immunohistochemistry. Furthermore, TEAD4 knockdown model was used to evaluate cellular proliferation, cell-cycle analysis, and the interaction between TEAD4 and Yes-associated protein (YAP) which was reported to be a transcription coactivator of cellular proliferation...
March 14, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28315059/cdk-inhibitor-su9516-induces-tetraploid-blastocyst-formation-from-parthenogenetically-activated-porcine-embryos
#18
Qing Guo, Long Jin, Hai-Ying Zhu, Xiao-Chen Li, Yu-Chen Zhang, Xiao-Xu Xing, Guang-Lei Zhang, Mei-Fu Xuan, Qi-Rong Luo, Zhao-Bo Luo, Jun-Xia Wang, Jin-Dan Kang, Xi-Jun Yin
OBJECTIVE: To examine the effect of SU9516, a cyclin-dependent kinase inhibitor, on the induction of tetraploid blastocyst formation in porcine embryos by parthenogenetic activation. RESULTS: Karyotype analysis of blastocysts showed that in the SU9516-treatment group 56% were tetraploid, whereas in the cytochalasin B (CB) group 67% were diploid. The level of maturation-promoting factor (MPF) in stimulated embryos treated with 10 µM SU9516 for 4 h was lower than in embryos treated with CB group (103 vs...
March 17, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28315051/development-of-antibody-modified-chitosan-nanoparticles-for-the-targeted-delivery-of-sirna-across-the-blood-brain-barrier-as-a-strategy-for-inhibiting-hiv-replication-in-astrocytes
#19
Jijin Gu, Karam Al-Bayati, Emmanuel A Ho
RNA interference (RNAi)-mediated gene silencing offers a novel treatment and prevention strategy for human immunodeficiency virus (HIV) infection. HIV was found to infect and replicate in human brain cells and can cause neuroinfections and neurological deterioration. We designed dual-antibody-modified chitosan/small interfering RNA (siRNA) nanoparticles to deliver siRNA across the blood-brain barrier (BBB) targeting HIV-infected brain astrocytes as a strategy for inhibiting HIV replication. We hypothesized that transferrin antibody and bradykinin B2 antibody could specifically bind to the transferrin receptor (TfR) and bradykinin B2 receptor (B2R), respectively, and deliver siRNA across the BBB into astrocytes as potential targeting ligands...
March 17, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/28314740/dual-recognition-of-chromatin-and-microtubules-by-incenp-is-important-for-mitotic-progression
#20
Michael S Wheelock, David J Wynne, Boo Shan Tseng, Hironori Funabiki
The chromosomal passenger complex (CPC), composed of inner centromere protein (INCENP), Survivin, Borealin, and the kinase Aurora B, contributes to the activation of the mitotic checkpoint. The regulation of CPC function remains unclear. Here, we reveal that in addition to Survivin and Borealin, the single α-helix (SAH) domain of INCENP supports CPC localization to chromatin and the mitotic checkpoint. The INCENP SAH domain also mediates INCENP's microtubule binding, which is negatively regulated by Cyclin-dependent kinase-mediated phosphorylation of segments flanking the SAH domain...
March 17, 2017: Journal of Cell Biology
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