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https://www.readbyqxmd.com/read/28931237/histone-methyltransferase-set8-epigenetically-reprograms-host-immune-responses-to-assist-mycobacterial-survival
#1
Vikas Singh, Praveen Prakhar, R S Rajmani, Kasturi Mahadik, Salik Miskat Borbora, Kithiganahalli Narayanaswamy Balaji
NQO1 and TRXR1 are important host reductases implicated in the regulation of inflammation and apoptosis. Although the transcriptional machinery governing these processes have been extensively investigated, the associated epigenetic regulatory events remain unclear. Here, we report that SET8, a histone H4 lysine 20 monomethylase (H4K20me1), is highly induced during Mycobacterium tuberculosis infection that orchestrates immune evasion strategies through the induction of NQO1 and TRXR1 in vivo. SET8, along with FoxO3a, mediates an active NQO1-PGC1-α complex, which promotes the anti-inflammatory M2 macrophage phenotype, and assists TRXR1-regulated arrest of tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28931215/berberine-could-inhibit-thyroid-carcinoma-cells-by-inducing-mitochondrial-apoptosis-g0-g1-cell-cycle-arrest-and-suppressing-migration-via-pi3k-akt-and-mapk-signaling-pathways
#2
Liang Li, Xingchun Wang, Rampersad Sharvan, Jingyang Gao, Shen Qu
Berberine, an important natural isoquinoline alkaloid from traditional Chinese medicine, is reported to exhibit multiple pharmacological properties, including anti-microbial, anti-diabetes, anti-obesity, anti-inflammatory and anti-carcinogenic activities. Although studies have shown that a wide range of carcinoma cells could be inhibited by berberine, few studies involved thyroid carcinoma. We therefore examined the effect of berberine on papillary thyroid carcinoma (PTC, the most common subtype) and anaplastic thyroid carcinoma (ATC, the most malignant and aggressive subtype)...
September 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28930680/systematic-kinase-inhibitor-profiling-identifies-cdk9-as-a-synthetic-lethal-target-in-nut-midline-carcinoma
#3
Johannes Brägelmann, Marcel A Dammert, Felix Dietlein, Johannes M Heuckmann, Axel Choidas, Stefanie Böhm, André Richters, Debjit Basu, Verena Tischler, Carina Lorenz, Peter Habenberger, Zhizhou Fang, Sandra Ortiz-Cuaran, Frauke Leenders, Jan Eickhoff, Uwe Koch, Matthäus Getlik, Martin Termathe, Muhammad Sallouh, Zoltán Greff, Zoltán Varga, Hyatt Balke-Want, Christopher A French, Martin Peifer, H Christian Reinhardt, László Örfi, György Kéri, Sascha Ansén, Lukas C Heukamp, Reinhard Büttner, Daniel Rauh, Bert M Klebl, Roman K Thomas, Martin L Sos
Kinase inhibitors represent the backbone of targeted cancer therapy, yet only a limited number of oncogenic drivers are directly druggable. By interrogating the activity of 1,505 kinase inhibitors, we found that BRD4-NUT-rearranged NUT midline carcinoma (NMC) cells are specifically killed by CDK9 inhibition (CDK9i) and depend on CDK9 and Cyclin-T1 expression. We show that CDK9i leads to robust induction of apoptosis and of markers of DNA damage response in NMC cells. While both CDK9i and bromodomain inhibition over time result in reduced Myc protein expression, only bromodomain inhibition induces cell differentiation and a p21-induced cell-cycle arrest in these cells...
September 19, 2017: Cell Reports
https://www.readbyqxmd.com/read/28930190/oligonol-a-low-molecular-weight-polyphenol-derived-from-lychee-alleviates-muscle-loss-in-diabetes-by-suppressing-atrogin-1-and-murf1
#4
Hung-Wen Liu, Yen-Ju Chen, Yun-Ching Chang, Sue-Joan Chang
Stimulation of the ubiquitin-proteasome pathway-especially E3 ubiquitin ligases Atrogin-1 and MuRF1-is associated with muscle loss in diabetes. Elevated lipid metabolites impair myogenesis. Oligonol, a low molecular weight polyphenol derived from lychee, exhibited anti-diabetic and anti-obesity properties, suggesting it could be a proper supplement for attenuating muscle loss. Dietary (10 weeks) oligonol supplementation (20 or 200 mg/kg diet) on the skeletal muscle loss was investigated in diabetic db/db mice...
September 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28929687/-effects-of-%C3%AE-pinene-extracted-from-pine-needle-on-expression-of-mir-221-and-its-potential-target-genes-in-human-hepatocellular-carcinoma-cells
#5
Jie-Bo Yang, Ming Li, Jing-Jing Xie, Meng-Die Yang, Xin-Shuo Lu, Fang Wang, Wei-Qiang Chen
To investigate the anti-hepatoma mechanism of α-pinene, HepG2 cell was treated with α-pinene and the change of cell cycle was examined by flow cytometry. The expression of miR-221, which was related the regulation of G₂/M phase, was detected by quantitative Real-time PCR. Meanwhile, TargetScan and other online bioinformatics methods were used to analyze and predict the target genes of miR-221, then the expression level of related target genes were detected by quantitative Real-time PCR. The results showed that α-pinene inhibited the proliferation of HepG2 cells in dose-dependent manner...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28928993/what-drives-embryo-development-chromosomal-normality-or-mitochondria
#6
A Bayram, I Elkhatib, A Arnanz, A Linan, F Ruiz, B Lawrenz, H M Fatemi
OBJECTIVE: To report the arrest of euploid embryos with high mtDNA content. DESIGN: A report of 2 cases. SETTING: Private fertility clinic. PATIENTS: 2 patients, 45 and 40 years old undergoing IVF treatment. INTERVENTIONS: Mature oocytes were collected and vitrified from two ovarian stimulations. Postthaw, survived mature oocytes underwent fertilization by intracytoplasmic sperm injection (ICSI)...
2017: Case Reports in Genetics
https://www.readbyqxmd.com/read/28928921/an-unusual-cause-of-genu-valgum-and-persistent-instability
#7
Edward Holloway, Paul Sutton, Robert Cooper
We present the case of a professional adolescent footballer who attended our clinic with ongoing instability symptoms and valgus knee deformity after conservative management of an medial collateral ligament injury. The patient was found to have sustained a contra-coup Salter Harris Type V injury to his lateral distal femur physis resulting in premature growth arrest and deformity. Salter Harris Type V injuries are rare, and often not diagnosed until growth has arrest has occurred due to lack of identifiable features on initial plain radiographs...
August 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28928900/dihydroorotate-dehydrogenase-inhibitors-target-c-myc-and-arrest-melanoma-myeloma-and-lymphoma-cells-at-s-phase
#8
Mathura Subangari Dorasamy, Bhavesh Choudhary, Kavitha Nellore, Hosahalli Subramanya, Pooi-Fong Wong
Dihydroorotate dehydrogenase (DHODH) is a rate-limiting enzyme in the de novo biosynthesis pathway of pyrimidines. Inhibition of this enzyme impedes cancer cell proliferation but the exact mechanisms of action of these inhibitors in cancer cells are poorly understood. In this study, we showed that cancer cells, namely melanoma, myeloma and lymphoma overexpressed DHODH protein and treatment with A771726 and Brequinar sodium resulted in cell cycle arrest at S-phase. Transfection with DHODH shRNA depleted DHODH protein expression and impeded the proliferation of melanoma cells...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928875/microrna-216b-5p-functions-as-a-tumor-suppressive-rna-by-targeting-tpt1-in-pancreatic-cancer-cells
#9
Yu You, Jiaxin Tan, Yi Gong, Haisu Dai, Haowei Chen, Xuejun Xu, Aigang Yang, Yujun Zhang, Ping Bie
MicroRNAs (miRNAs) are increasingly recognized as being involved in pancreatic cancer progression by directly regulating the expression of their targets. In this study, we showed that miR-216b-5p expression was significantly decreased in pancreatic cancer tissues and cell lines. In addition, low miR-216b-5p expression was significantly associated with large tumor size and advanced TNM stage. Meanwhile, both Kaplan-Meier and multivariate survival analysis showed that decreased miR-216b-5p expression was associated with overall survival...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928866/ct-721-a-potent-bcr-abl-inhibitor-exhibits-excellent-in-vitro-and-in-vivo-efficacy-in-the-treatment-of-chronic-myeloid-leukemia
#10
Yinghui Sun, Na Zhao, Huan Wang, Qiong Wu, Yunqi Han, Qichao Liu, Mangang Wu, Yuliang Liu, Fansheng Kong, He Wang, Ying Sun, Deguang Sun, Lutao Jing, Guojing Tang, Yuandong Hu, Dengming Xiao, Hong Luo, Yongxin Han, Yong Peng
Kinase inhibitors that target Bcr-Abl are highly effective in the treatment of chronic myeloid leukemia (CML). However, these inhibitors are often invalidated due to the drug resistance. Therefore, the discovery and development of novel Bcr-Abl inhibitors is required to overwhelm the drug resistance in the treatment of CML resistant to the currently used first-line Bcr-Abl inhibitors. Herein we have described a newly developed Bcr-Abl inhibitor CT-721, which displayed potent inhibitory effects on wild-type and T315I mutant Bcr-Abl...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928816/analysis-of-long-non-coding-rna-expression-profiles-in-clear-cell-renal-cell-carcinoma
#11
Fei Yan Yang, Yan Wang, Jian Guo Wu, Shao Li Song, Gang Huang, Wei Min Xi, Li Ling Tan, Jian Wang, Qing Cao
To investigate the expression patterns of long non-coding RNAs (lncRNAs) in clear cell renal cell carcinoma (ccRCC) and in metastatic renal cell carcinoma (RCC), the present study downloaded three human exon arrays available from the public Gene Expression Omnibus. The probes of the human exon arrays were re-annotated and the probes uniquely mapping to lncRNAs were retained at the gene level. Following the analysis of GSE53757 and GSE46699, which contained paired ccRCC cancer and normal adjacent tissue samples, 32 differentially expressed lncRNAs (adjusted P<0...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28928813/heat-shock-protein-70-downregulation-inhibits-proliferation-migration-and-tumorigenicity-in-hepatocellular-carcinoma-cells
#12
Ju Xiong, Xue-Mei Jiang, Shan-Shan Mao, Xiang-Nan Yu, Xiao-Xi Huang
The overexpression of heat shock protein 70 (HSP70), a major stress-inducible heat shock protein, has been identified to enhance the proliferation, survival, invasion and metastasis of diverse types of human cancer. However, its role in hepatocellular carcinoma (HCC) remains poorly understood. The present study demonstrated that HSP70 expression was higher in tested HCC cell lines, compared with the normal hepatocyte LO2, and the suppression of HSP70 significantly inhibited the proliferation of SMMC-7721 and Hep3B cells...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28928812/molecular-mechanisms-of-ampelopsin-from-ampelopsis-megalophylla-induces-apoptosis-in-hela-cells
#13
Peipei Cheng, Chun Gui, Jing Huang, Ye Xia, Yu Fang, Guozheng Da, Xiuqiao Zhang
Ampelopsin (AMP) is an active ingredient of flavonoid compounds that is extracted from Ampelopsis megalophylla Diels et Gilg. The present study aimed at investigating the antitumor activities of AMP and the possible underlying molecular mechanisms in HeLa cells. A total of three types of tumor cell were selected to screen antitumor activities for AMP using the MTT assay. Flow cytometry was used to analyze the cell apoptotic proportion and the cell cycle. Rhodamine 123 staining was used to determine changes in mitochondrial transmembrane potential...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28928575/referrral-systems-development-and-survey-of-perioperative-and-critical-care-referral-to-anesthetists
#14
P L Narendra, Harihar V Hegde, Maroof Ahmad Khan, Dayanand G Talikoti, Samson Nallamilli
INTRODUCTION: Anesthetists come in contact with more than two-third of hospital patients. Timely referral to anesthetists is vital in perioperative and remote site settings. Delayed referrals, improper referrals, and referrals at inappropriate levels can result in inadequate preparation, perioperative complications, and poor outcome. METHODS: The self administered paper survey to delegates attending anesthesia conferences. Questions were asked on how high-risk, emergency surgical cases remote site and critical care patients were referred to anesthetists and presence of rapid response teams...
July 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28928088/20-s-ginsenoside-rh2-suppresses-proliferation-and-migration-of-hepatocellular-carcinoma-cells-by-targeting-ezh2-to-regulate-cdkn2a-2b-gene-cluster-transcription
#15
Qi Li, Bai Li, Chengya Dong, Yajie Wang, Qi Li
20(S)-Ginsenoside Rh2 (20(S)-GRh2) exerts important pharmacological effects with regard to the control of human hepatocellular carcinoma (HCC). EZH2 is a potent histone methyltransferase of H3K27me(3), which has been determined as an oncogene in many malignancies. The CDKN2A-2B gene cluster encodes three important tumor suppressors, P14, P15 and P16. In this study, the anticancer effect and molecular mechanism of 20(S)-GRh2 on HCC was investigated. Treatment of HCC cells with 20(S)-GRh2 inhibited cell proliferation, migration and induced cell cycle arrest at the G0/G1 phase, and inhibited tumor growth in vivo...
September 16, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28928040/p-3f-a-microtubule-polymerization-inhibitor-enhances-p53-stability-through-the-change-in-localization-of-rps27a
#16
Huai Wang, Jiang Feng, Tong Zhou, Lijun Wei, Jianming Zhou
Previously, we demonstrated that P-3F, a podophyllum derivative, exhibits a 297-fold enhancement in antitumor activity than VP-16, used as anticancer agent in clinical. The purpose of our present study was to investigate the precise antitumor mechanism action of P-3F. It showed that P-3F inhibited microtubule polymerization in a concentration-dependent manner. The results were in overall agreement with modeling and docking studies performed on P-3F and tubulin. In addition, P-3F increased the levels of P53, this in turn prolonged P53 half-life...
September 16, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28927789/anticancer-efficacy-of-p-dodecylaminophenol-against-high-risk-and-refractory-neuroblastoma-cells-in-vitro-and-in-vivo
#17
Noriko Takahashi, Shunpei Koyama, Shinya Hasegawa, Masahiro Yamasaki, Masahiko Imai
Neuroblastoma is an aggressive and drug-resistant refractory cancer. The human high-risk neuroblastoma cell line, SK-N-AS (non-amplified N-myc) is derived from stromal cells and it is resistant to treatment with retinoic acid (1, RA), which is a chemotherapeutic agent used to induce neuronal cellular differentiation of neuroblastomas. We have developed p-dodecylaminophenol (3, p-DDAP), based on N-(4-hydroxyphenyl)retinamide (2, 4-HPR), a synthetic amide of 1, since 1 and 2 are associated with the side-effect of nyctalopia...
September 9, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28927755/protein-kinase-ck2-inhibition-suppresses-neointima-formation-via-a-proline-rich-homeodomain-dependent-mechanism
#18
K S Wadey, B A Brown, G B Sala-Newby, P-S Jayaraman, K Gaston, S J George
Neointimal hyperplasia is a product of VSMC replication and consequent accumulation within the blood vessel wall. In this study, we determined whether inhibition of protein kinase CK2 and the resultant stabilisation of proline-rich homeodomain (PRH) could suppress VSMC proliferation. Both silencing and pharmacological inhibition of CK2 with K66 antagonised replication of isolated VSMCs. SiRNA-induced knockdown as well as ectopic overexpression of proline-rich homeodomain indicated that PRH disrupts cell cycle progression...
September 16, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28927557/cacna1a-related-early-onset-encephalopathy-with-myoclonic-epilepsy-a-case-report
#19
Takuya Hayashida, Yoshiaki Saito, Atsushi Ishii, Hiroyuki Yamada, Ayako Itakura, Toshinori Minato, Tetsuhiro Fukuyama, Yoshihiro Maegaki, Shinichi Hirose
We report a one-year-old boy with early-onset myoclonic epilepsy, developmental arrest, and hyperekplexia during early infancy. He presented with refractory myoclonic/tonic seizures since birth. Electroencephalography revealed multifocal spikes, and rhythmic activities that occurred simultaneous with aggravation of myoclonus accompanied by tonic upper limb elevation. Brain magnetic resonance imaging revealed progressive cerebral atrophy with periventricular signal change and thin corpus callosum at one year of age...
September 16, 2017: Brain & Development
https://www.readbyqxmd.com/read/28927190/outcomes-differ-by-first-documented-rhythm-after-witnessed-out-of-hospital-cardiac-arrest-in-children-an-observational-study-with-prospective-nationwide-population-based-cohort-database-in-japan
#20
Masahiko Hara, Kenichi Hayashi, Tetsuhisa Kitamura
Aims: To evaluate and compare outcomes and impacts of delay of time to cardiopulmonary resuscitation (CPR) by type of first documented rhythm in paediatric patients with out-of-hospital cardiac arrest (OHCA). Methods and results: We enrolled 3968 paediatric (aged <18 years) OHCA patients whose events were witnessed between 2005 and 2012 from a prospective nationwide population-based cohort database in Japan. We assessed and compared their neurologically favourable 1-month survival according to first documented rhythm: pulseless ventricular tachycardia/ventricular fibrillation (pVT/VF), pulseless electrical activity (PEA), or asystole...
January 1, 2017: European Heart Journal. Quality of Care & Clinical Outcomes
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