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https://www.readbyqxmd.com/read/28732362/acute-atorvastatin-treatment-restores-the-cardioprotective-effects-of-ischemic-postconditioning-in-hyperlipidemic-rats
#1
Tao Sun, Hong-Ju Zhang, Chayakrit Krittanawong, Su Wang, Ying Tao, Zhao Li, Qiancheng Yin, Donghua Zhang, Qian Wang, Ji Huang, Jingmei Zhang, Zhizhong Li, Yutong Cheng
BACKGROUND: Ischemic Postconditioning (IPC) reduces ischemia/reperfusion (I/R) injury under normal conditions. HMG-CoA reductase inhibitors (statins), which inhibit the synthesis of mevalonate, can interfere with the cardioprotective effect of IPC. However, the beneficial role of IPC in hyperlipidemic patients, post-acute administration of statins remains unknown. This study was to determine if acute administration of atorvastatin affect the infarct size-limiting effect of IPC in hyperlipidemic rats...
July 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28732359/resveratrol-inhibits-age-dependent-spontaneous-tumorigenesis-by-sirt1-mediated-post-translational-modulations-in-the-annual-fish-nothobranchius-guentheri
#2
Tingting Liu, Long Ma, Zhaodi Zheng, Fenglin Li, Shan Liu, Yingbo Xie, Guorong Li
Resveratrol, SIRT1 activator, inhibits carcinogenesis predominantly performed in transgenic animal models, orthotopic cancers of nude mice or different cancer cell lines, but its effects during process of spontaneous tumors using vertebrate models remain untested. Spontaneous liver neoplasm is an age-related disease and is inhibited by resveratrol in the annual fish Nothobranchius guentheri, which indicates that the fish can act as an excellent model to study spontaneous tumorigenesis. Totally, 175 fish were fed with resveratrol and another 175 fish for controls...
July 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28732357/profiling-cancer-related-gene-mutations-in-oral-squamous-cell-carcinoma-from-japanese-patients-by-targeted-amplicon-sequencing
#3
Takafumi Nakagaki, Miyuki Tamura, Kenta Kobashi, Ryota Koyama, Hisayo Fukushima, Tomoko Ohashi, Masashi Idogawa, Kazuhiro Ogi, Hiroyoshi Hiratsuka, Takashi Tokino, Yasushi Sasaki
Somatic mutation analysis is a standard practice in the study of human cancers to identify mutations that cause therapeutic sensitization and resistance. We performed comprehensive genomic analyses that used PCR target enrichment and next-generation sequencing on Ion Proton semiconductor sequencers. Forty-seven oral squamous cell carcinoma (OSCC) samples and their corresponding noncancerous tissues were used for multiplex PCR amplification to obtain targeted coverage of the entire coding regions of 409 cancer-related genes (covered regions: 95...
July 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28731278/knockdown-of-long-non-coding-rna-meg3-protects-h9c2-cells-from-hypoxia-induced-injury-by-targeting-microrna-183
#4
Licheng Gong, Haiming Xu, Hong Chang, Yaliang Tong, Tao Zhang, Gongliang Guo
Acute myocardial infarction (AMI) occurs when blood supply to the heart is diminished (ischemia) for long time, and ischemia is primarily caused due to hypoxia. This study evaluated the effects of long non-coding RNA maternally expressed gene 3 (MEG3) on hypoxic rat cardiomyocyte-drived H9c2 cells. Hypoxic injury was confirmed by alterations of cell viability, migration, invasion, apoptosis and hypoxia-inducible factor 1α (HIF-1α) expression. MEG3 level in hypoxic cells and effects of its knockdown on hypoxic cells were assessed...
July 21, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28731223/neferine-modulates-igf-1r-nrf2-signaling-in-doxorubicin-treated-h9c2-cardiomyoblasts
#5
Lohanathan Bharathi Priya, Rathinasamy Baskaran, Chih-Yang Huang, Viswanadha Vijaya Padma
Doxorubicin (DOX) induced cardiotoxicity is a major problem during chemotherapy of cancers. DOX-mediated suppression of type 1 IGF receptor (IGF-1R) signaling leads to cardiac dysfunction. Neferine, a bisbezylisoquinoline alkaloid from the seed embryos of Nelumbo nucifera Gaertn possesses a distinct range of pharmacological properties. Herewith, the present study attempts to elucidate the protective role of neferine against DOX induced toxicity in H9c2 rat cardiomyoblast cell line model. DOX-treated H9c2 cells significantly increased mitochondrial superoxide generation, depleted cellular antioxidant status, suppressed the activation of IGF-1R signaling via PI3K/Akt/mTOR and induced autophagy by the activation of ULK1, Beclin1, Atg7 and LC3B...
July 21, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28731194/smurf1-promotes-the-proliferation-migration-and-invasion-of-gastric-cancer-cells
#6
Youmao Tao, Caixia Sun, Tao Zhang, Yan Song
Smad ubiquitin regulatory factor 1 (SMURF1), a well-known E3 ubiquitin ligase, targets substrate proteins for ubiquitination and proteasomal degradation. Accumulating studies have shown that SMURF1 acts as an oncogenic factor in human malignancies. However, the clinical significance of SMURF1 and its role in gastric cancer (GC) remain unclear. The expression of SMURF1 was detected in 68 cases of GC and corresponding tumor-adjacent specimens. Our results revealed that SMURF1 was prominently overexpressed in GC specimens compared to corresponding tumor-adjacent tissues...
July 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28731179/clinical-significance-of-mir-138-in-patients-with-malignant-melanoma-through-targeting-of-pdk1-in-the-pi3k-akt-autophagy-signaling-pathway
#7
Fanjun Meng, Yuxia Zhang, Xing Li, Juan Wang, Zhiyu Wang
The present study investigated the clinical significance of miR-138 in patients with malignant melanoma (MM), which has previously been associated with tumor growth. In patients with MM, we found that the expression of miR-138 was significantly downregulated when compared with healthy control subjects. Overexpression of miR-138 in the human melanoma cell line A2058 inhibited cell proliferation and induced cell apoptosis, and increased caspase-3 and Bax protein expression when compared with a negative control group...
July 19, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28731148/molecular-genetics-and-targeted-therapy-of-wnt-related-human-diseases-review
#8
Masuko Katoh, Masaru Katoh
Canonical WNT signaling through Frizzled and LRP5/6 receptors is transduced to the WNT/β-catenin and WNT/stabilization of proteins (STOP) signaling cascades to regulate cell fate and proliferation, whereas non-canonical WNT signaling through Frizzled or ROR receptors is transduced to the WNT/planar cell polarity (PCP), WNT/G protein-coupled receptor (GPCR) and WNT/receptor tyrosine kinase (RTK) signaling cascades to regulate cytoskeletal dynamics and directional cell movement. WNT/β-catenin signaling cascade crosstalks with RTK/SRK and GPCR-cAMP-PKA signaling cascades to regulate β-catenin phosphorylation and β-catenin-dependent transcription...
July 19, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28731147/beclin-1-overexpression-inhibits-chondrocyte-apoptosis-and-downregulates-extracellular-matrix-metabolism-in-osteoarthritis
#9
Bin Song, Hong Song, Weiguo Wang, Hongru Wang, Hanyuan Peng, Jing Cui, Rong Wang, Hua Huang, Wei Wang, Lili Wang
In the present study, the expression of Beclin 1 in osteoarthritis (OA) cartilage tissue was investigated, and also its role in proliferation, apoptosis and expression of matrix metalloproteinases (MMPs) in chondrocytes obtained from patients with OA. Beclin 1 expression in cartilage tissue from OA patients, and in the age- and sex-matched controls, was detected by immunohistochemistry, semi-quantitative polymerase chain reaction and western blotting. Chondrocytes were divided into control and Beclin 1-overexpressed groups...
July 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28730764/mtor-deregulation-in-oral-cavity-squamous-cell-carcinoma
#10
Nicholas S Mastronikolis, Evangelos Tsiambas, Theodoros A Papadas, Panagiotis P Fotiades, Athanasios T Papadas, Stylianos N Mastronikolis, Ioannis Kastanioudakis, Vasileios Ragos
Signal transduction pathways consist of a variety of inter- and intra-cellular molecules. They act as supporting mechanisms for cell survival and homeostasis. Among them, the phosphatidylinositol 3-kinase (PI3K)/tumor suppressor phosphatase and tensin homologue deleted on chromosome ten (PTEN)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) pathway plays a crucial role in regulating normal cell growth based on growth factor receptors (GFRs) interaction, including epidermal GFR (type II-HER2) and insulin GFR (IGF)...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28729464/mir-15a-5p-levels-correlate-with-poor-ovarian-response-in-human-follicular-fluid
#11
Kaiyue Zhang, Wanxia Zhong, Wei-Ping Li, Zijiang Chen, Cong Zhang
Poor ovarian response is a significant problem encountered during in vitro fertilization and embryo transfer procedures. Many infertile women may suffer from poor ovarian response and its incidence tends to be increasing in young patients nowadays. It is a major cause of maternal infertility because it is associated with low pregnancy and live birth rates. However, the cause of poor ovarian response is not clear. In this study, we extracted microRNAs from human follicular fluid and performed miRNA sequencing to investigate a potential posttranscriptional mechanism underlying poor ovarian response...
July 20, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28729453/pi3k-and-calcium-signaling-in-cardiovascular-disease
#12
REVIEW
Alessandra Ghigo, Muriel Laffargue, Mingchuan Li, Emilio Hirsch
Receptor signaling relays on intracellular events amplified by secondary and tertiary messenger molecules. In cardiomyocytes and smooth muscle cells, cyclic AMP (cAMP) and subsequent calcium (Ca(2+)) fluxes are the best characterized receptor-regulated signaling events. However, most of receptors able to modify contractility and other intracellular responses signal through a variety of other messengers, and whether these signaling events are interconnected has long remained unclear. For example, the PI3K (phosphoinositide 3-kinase) pathway connected to the production of the lipid second messenger PIP3/PtdIns(3,4,5)P3 (phosphatidylinositol (3,4,5)-trisphosphate) is potentially involved in metabolic regulation, activation of hypertrophy, and survival pathways...
July 21, 2017: Circulation Research
https://www.readbyqxmd.com/read/28728925/potential-anti-cancer-activity-of-7-o-pentyl-quercetin-efficient-membrane-targeted-kinase-inhibition-and-pro-oxidant-effect
#13
Nicola Sassi, Andrea Mattarei, Virginia Espina, Lance Liotta, Mario Zoratti, Cristina Paradisi, Lucia Biasutto
Quercetin is a redox-active plant-derived flavonoid with potential anticancer effects, stemming largely from its interaction with a number of proteins, and in particular from inhibition of pro-life kinases. To improve efficacy, we reasoned that a local increase in concentration of the compound at the level of cell membranes would result in a more efficient interaction with membrane-associated signaling kinases. We report here the synthesis of all five isomeric quercetin derivatives in which an n-pentyl group was linked via an ether bond to each hydroxyl of the flavonoid kernel...
July 17, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28728293/-curcumin-induces-apoptosis-and-protective-autophagy-in-human-gastric-cancer-cells-with-different-degree-of-differentiation
#14
W Li, Y Zhou, J Yang, H H Zhang, S L Zhao, T Zhang, J Huo, P Zheng
Objective: To investigate the effect of curcumin on the apoptosis and autophagy of human gastric cancer cells with different degree of differentiation. Methods: Gastric cancer cell lines BGC-823 and MKN-28 were treated with curcumin at different concentrations. The effect of curcumin on cell proliferation was measured by MTT assay. Apoptosis was assessed by flow cytometry. Autophagy status was analyzed by acridine orange staining. The expression levels of apoptotic and autophagy-related proteins were detected by Western blot...
July 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28728166/whole-genome-sequencing-revealed-novel-prognostic-biomarkers-and-promising-targets-for-therapy-of-ovarian-clear-cell-carcinoma
#15
Hiroaki Itamochi, Tetsuro Oishi, Nao Oumi, Satoshi Takeuchi, Kosuke Yoshihara, Mikio Mikami, Nobuo Yaegashi, Yasuhisa Terao, Kazuhiro Takehara, Kimio Ushijima, Hidemichi Watari, Daisuke Aoki, Tadashi Kimura, Toshiaki Nakamura, Yoshihito Yokoyama, Junzo Kigawa, Toru Sugiyama
BACKGROUND: Ovarian clear cell carcinoma (OCCC) is mostly resistant to standard chemotherapy that results in poor patient survival. To understand the genetic background of these tumours, we performed whole-genome sequencing of OCCC tumours. METHODS: Tumour tissue samples and matched blood samples were obtained from 55 Japanese women diagnosed with OCCC. Whole-genome sequencing was performed using the Illumina HiSeq platform according to standard protocols. RESULTS: Alterations to the switch/sucrose non-fermentable (SWI/SNF) subunit, the phosphatidylinositol-3-kinase (PI3K)/Akt signalling pathway, and the receptor tyrosine kinase (RTK)/Ras signalling pathway were found in 51%, 42%, and 29% of OCCC tumours, respectively...
July 20, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28727815/polymorphisms-associated-with-everolimus-pharmacokinetics-toxicity-and-survival-in-metastatic-breast-cancer
#16
Tomas Pascual, María Apellániz-Ruiz, Cristina Pernaut, Cecilia Cueto-Felgueroso, Pablo Villalba, Carlos Álvarez, Luis Manso, Lucia Inglada-Pérez, Mercedes Robledo, Cristina Rodríguez-Antona, Eva Ciruelos
PURPOSE: Metastatic breast cancer (MBC) progressing after endocrine therapy frequently activates PI3K/AKT/mTOR pathway. The BOLERO-2 trial showed that everolimus-exemestane achieves increased progression free survival (PFS) compared with exemestane. However, there is great inter-patient variability in toxicity and response to exemestane-everolimus treatment. The objective of this study was to perform an exploratory study analyzing the implication of single nucleotide polymorphisms (SNPs) on outcomes from this treatment through a pharmacogenetic analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28725667/data-on-lipocalin-2-and-phosphatidylinositol-3-kinase-signaling-in-a-methionine-and-choline-deficient-model-of-non-alcoholic-steatohepatitis
#17
Anastasia Asimakopoulou, Erawan Borkham-Kamphorst, Eddy Van de Leur, Ralf Weiskirchen
The data presented in this brief report support the research article "Altered mitochondrial and peroxisomal integrity in lipocalin-2-deficient mice with hepatic steatosis" [1, doi: 10.1016/j.bbadis.2017.04.006]. We tested whether the absence of Lipocalin-2 (LCN2) could dysregulate the phosphatidylinositol 3-kinase/protein kinase B (PI3K-PKB) pathway and hepatic homeostasis in Non-Alcoholic-Steatohepatitis (NASH). The article highlights the role of LCN2 in hepatic homeostasis.
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28725489/bmp-2-induces-emt-and-breast-cancer-stemness-through-rb-and-cd44
#18
Peide Huang, Anan Chen, Weiyi He, Zhen Li, Guanglin Zhang, Zhong Liu, Ge Liu, Xueting Liu, Shuilian He, Gang Xiao, Feicheng Huang, Jan Stenvang, Nils Brünner, An Hong, Ju Wang
Bone morphogenetic protein 2 (BMP-2) has been reported to facilitate epithelial-to-mesenchymal transition (EMT) and bone metastasis in breast cancer xenograft models. To investigate the role of BMP-2 in the development of breast cancer stem cells (BCSCs), and to further elucidate the mechanisms underlying its influence on breast cancer metastasis, we conducted a comprehensive molecular study using breast cancer cell lines and clinical samples. Our results showed that downregulation of Rb by BMP-2 was associated with ubiquitin-mediated degradation activated by phosphorylation of Rb via the PI3K/AKT signal pathway...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28725482/systems-biology-driving-drug-development-from-design-to-the-clinical-testing-of-the-anti-erbb3-antibody-seribantumab-mm-121
#19
REVIEW
Birgit Schoeberl, Art Kudla, Kristina Masson, Ashish Kalra, Michael Curley, Gregory Finn, Emily Pace, Brian Harms, Jaeyeon Kim, Jeff Kearns, Aaron Fulgham, Olga Burenkova, Viara Grantcharova, Defne Yarar, Violette Paragas, Jonathan Fitzgerald, Marisa Wainszelbaum, Kip West, Sara Mathews, Rachel Nering, Bambang Adiwijaya, Gabriela Garcia, Bill Kubasek, Victor Moyo, Akos Czibere, Ulrik B Nielsen, Gavin MacBeath
The ErbB family of receptor tyrosine kinases comprises four members: epidermal growth factor receptor (EGFR/ErbB1), human EGFR 2 (HER2/ErbB2), ErbB3/HER3, and ErbB4/HER4. The first two members of this family, EGFR and HER2, have been implicated in tumorigenesis and cancer progression for several decades, and numerous drugs have now been approved that target these two proteins. Less attention, however, has been paid to the role of this family in mediating cancer cell survival and drug tolerance. To better understand the complex signal transduction network triggered by the ErbB receptor family, we built a computational model that quantitatively captures the dynamics of ErbB signaling...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28725277/sabcs-2016-systemic-therapy-for-metastatic-breast-cancer
#20
REVIEW
Simon Peter Gampenrieder, Gabriel Rinnerthaler, Richard Greil
At the 2016 San Antonio Breast Cancer Symposium, several interesting phase II and phase III studies investigating systemic therapies for metastatic breast cancer were presented. The PrEGOC 0102 trial demonstrated that the combination of fulvestrant plus everolimus is safe and effective and could be an alternative to exemestane plus everolimus for selected patients with hormone-receptor positive, HER2-negative disease. The pan-PI3K inhibitor buparlisib showed some activity in combination with fulvestrant after failure of everolimus in the BELLE-3 trial...
2017: Memo
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