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https://www.readbyqxmd.com/read/28535648/-effect-of-%C3%AE-40p53-isoform-on-enhancing-the-pro-apoptotic-function-of-p53-in-tumor-cells
#1
B S Wang, H W Zhao, L X Qiao, J Q Shan, Q S Hou, D X Chen, H L Guo
Objective: To investigate the effect of Δ40p53, an alternative spliced isoform of p53 lacking the N-ter minus, on the pro-apoptotic function of p53. Methods: The wild-type p53 was ectopically expressed in HCT116-p53(-/-) (endogenous Δ40p53 expression), HCT116-p53(+ /+) (wild-type p53) and H1299 (p53-null) cells by adenoviral delivery, while Δ40p53 plasmid were transfected into these cells to overexpress Δ40p53. The levels of Δ40p53 and p53 mRNA were detected by reverse transcription-polymerase chain reaction (RT-PCR) and quantitative PCR...
May 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28535644/-effect-of-neuroglobin-on-oxygen-glucose-deprivation-and-reoxygenation-induced-autophagy-in-a-human-neuroblastoma-cell-line
#2
S Y Deng, Y H Ai, H Gong, L Wu, C X Chen, Y M Wang, Z Y Liu, L Huang, Q Y Peng, L N Zhang
Objective: To investigate the effect of neuroglobin on oxygen-glucose deprivation and reoxygenation (OGD/R) induced autophagy in a human neuroblastoma cell line (SH-SY5Y). Methods: SH-SY5Y cells were transfected with plasmids (or vector) to establish a stable cell line of NGB overexpression (OE). After treated with OGD/R, cells were collected for the analyses of mRNA (Atg5, Atg7, BECN1 and FUNDC1) and protein levels of LC3. Furthermore, mitochondrial and cytosolic fractions were isolated for protein levels of PINK1 and Parkin...
May 23, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28535626/-expression-and-prognostic-significance-of-microenvironment-related-prognostic-factors-in-patients-with-classical-hodgkin-s-lymphoma
#3
T T Wang, S X Li, B Xia, H F Zhao, W Xu, H L Yang, X F Wang, Y Yu, B C Sun, Y Z Zhang
Objective: To observe the expression of three microenvironment related prognostic factors, i. e. programmed death 1 (PD-1), forkhead box protein 3(FOXP3) and colony-stimulating factor 1 receptor(CSF-1R) protein in classical Hodgkin's lymphoma (CHL) patients, and to explore the correlation between the protein expression and the prognosis of the patients. Methods: A total of 45 cases of CHL patients, who had been admitted to the Tianjin Medical University Cancer Institute and Hospital and Chinese PLA General Hospital from February 2005 to August 2010 were analyzed, including clinical features, prognostic factors, and treatment regimens...
May 16, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28535625/-expression-and-clinical-significance-of-ser10-phosphorylated-p27-kip1-protein-in-human-breast-carcinoma
#4
Z Q Guo, Q S Lü, Z Wang, L H Lu, N Lu, X W Wen, W X Wu, M Yao
Objective: To explore the expression and clinicopathological significance of Ser10 phosphorylated p27(kip1)(P-p27Ser10) protein in human breast carcinoma tissue. Methods: Tissue specimens were obtained from 111 cases with breast carcinoma from January 2004 to December 2005. And the expression of P-p27Ser10 protein for each specimen was detected by immunohistochemical (EnVision) analysis. Six representative paired samples of cancerous and paired adjacent normal tissues were collected and detected by Western blot...
May 16, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28535374/discovery-of-stromal-regulatory-networks-that-suppress-ras-sensitized-epithelial-cell-proliferation
#5
Huayang Liu, James A Dowdle, Safiya Khurshid, Nicholas J Sullivan, Nicholas Bertos, Komal Rambani, Markus Mair, Piotr Daniel, Esther Wheeler, Xing Tang, Kyle Toth, Michael Lause, Markus E Harrigan, Karl Eiring, Connor Sullivan, Matthew J Sullivan, Serena W Chang, Siddhant Srivastava, Joseph S Conway, Raleigh Kladney, Joseph McElroy, Sooin Bae, Yuanzhi Lu, Ali Tofigh, Sadiq M I Saleh, Soledad A Fernandez, Jeffrey D Parvin, Vincenzo Coppola, Erin R Macrae, Sarmila Majumder, Charles L Shapiro, Lisa D Yee, Bhuvaneswari Ramaswamy, Michael Hallett, Michael C Ostrowski, Morag Park, Helen M Chamberlin, Gustavo Leone
Mesodermal cells signal to neighboring epithelial cells to modulate their proliferation in both normal and disease states. We adapted a Caenorhabditis elegans organogenesis model to enable a genome-wide mesodermal-specific RNAi screen and discovered 39 factors in mesodermal cells that suppress the proliferation of adjacent Ras pathway-sensitized epithelial cells. These candidates encode components of protein complexes and signaling pathways that converge on the control of chromatin dynamics, cytoplasmic polyadenylation, and translation...
May 22, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28535300/magnitude-and-allele-frequency-of-cry1f-resistance-in-field-populations-of-the-fall-armyworm-lepidoptera-noctuidae-in-brazil
#6
O F Santos-Amaya, C S Tavares, J V C Rodrigues, T C Souza, N Rodrigues-Silva, R N C Guedes, A P Alves, E J G Pereira
Bacillus thuringiensis (Bt) corn producing the Cry1F protein was the first highly efficacious Bt corn deployed against the fall armyworm Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in Brazil, but reduced efficacy of this technology against the fall armyworm has been reported in some regions of the country. Here, we surveyed Cry1F resistance allele frequency and susceptibility of eight S. frugiperda populations collected in 2013 from non-Bt fields in different regions of Brazil. In F1 screen experiments, the overall frequency of the Cry1F resistance alleles in Brazilian populations was estimated at 0...
May 23, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28535199/genotype-phenotype-correlation-in-patients-with-isovaleric-acidemia-comparative-structural-modelling-and-computational-analysis-of-novel-variants
#7
Osama K Zaki, George Priya Doss C, Salsabil A Ali, Ghadeer G Murad, Shaima A Elashi, Maryam Sa Ebnou, D Thirumal Kumar, Ola Khalifa, Radwa Gamal, Heba S A El Abd, Bilal N Nasr, Hatem Zayed
Isovaleric acidemia (IVA) is an autosomal recessive inborn error of leucine metabolism. It is caused by a deficiency in the mitochondrial isovaleryl-CoA dehydrogenase (IVD) enzyme. In this study, we investigated eight patients with IVA. The patients diagnoses were confirmed by urinary organic acid analysis and the blood C5-Carnitine value. A molecular genetic analysis of the IVD gene revealed nine different variants: five were missense variants (c.1193G>A; p. R398Q, c.1207T>A; p. Y403N, c.872C>T; p...
May 23, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28534590/generation-of-wheat-gluten-hydrolysates-with-dipeptidyl-peptidase-iv-dpp-iv-inhibitory-properties
#8
A B Nongonierma, M Hennemann, S Paolella, R J FitzGerald
Wheat gluten, a Pro-rich dietary protein, was investigated for its potential to produce dipeptidyl peptidase IV (DPP-IV) inhibitory peptides during enzymatic hydrolysis with Debitrase HYW20. Nine gluten hydrolysates (H1-H9) were generated using a 2 factor × 3 level design of experiments (DOE) including the incubation temperature (40, 50 and 60 °C) and the enzyme: substrate ratio (E : S, 0.5, 1.0 and 1.5% (w/w)). Their DPP-IV half maximal inhibitory concentration (IC50) ranged from 0.24 ± 0.02 (H9) to 0...
May 23, 2017: Food & Function
https://www.readbyqxmd.com/read/28534560/re-configurable-multi-mode-contained-electrospray-ionization-for-protein-folding-and-unfolding-on-the-millisecond-time-scale
#9
Colbert F Miller, Dmytro S Kulyk, Jongin W Kim, Abraham K Badu-Tawiah
A new reconfigurable contained-electrospray (ES) ion source is described that can be operated in three unique modes (Types I, II and III) and was applied to control the charge state of proteins for subsequent online characterization by mass spectrometry. Using this device, proteins prepared in 100% water were highly charged after exposure to hydrochloric acid vapor. For myoglobin, the shift to a higher charge state occurred faster than the heme cofactor could escape the unfolding protein. This effect reflected in the detection of highly charged holo-myoglobin intermediates (+26), which suggests the modification process occurred on a millisecond time scale (Type I mode)...
May 23, 2017: Analyst
https://www.readbyqxmd.com/read/28534518/cdk20-interacts-with-keap1-to-activate-nrf2-and-promotes-radiochemoresistance-in-lung-cancer-cells
#10
Q Wang, J Ma, Y Lu, S Zhang, J Huang, J Chen, J-X Bei, K Yang, G Wu, K Huang, J Chen, S Xu
Radiochemoresistance is considered the main cause of local recurrence and distant metastasis in lung cancer. However, the underlying mechanisms of radiochemoresistance remain to be uncovered. In this study, we determine the functions of cell cycle-related kinase (CDK20) in radiochemoresistance. CDK20 is a newly identified protein kinase, which plays critical roles in cell growth and proliferation in several types of cancer. Using tandem affinity purification technology, we provide evidences that CDK20 binds to the ubiquitin ligase Kelch-like ECH-associated protein 1 (KEAP1), which targets transcriptional factor nuclear factor erythroid-2-related factor 2 (NRF2) for degradation...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28534516/transcriptional-and-posttranscriptional-regulation-of-hoxa13-by-lncrna-hottip-facilitates-tumorigenesis-and-metastasis-in-esophageal-squamous-carcinoma-cells
#11
C Lin, Y Wang, Y Wang, S Zhang, L Yu, C Guo, H Xu
The long non-coding RNA, HOTTIP, has an important role in tumorigenesis. It is known that HOTTIP regulates HOX gene family; however, its regulatory mechanism in esophageal squamous cell carcinoma (ESCC) remains elusive. In this study, we investigated the role of HOTTIP in ESCC and observed that HOTTIP/HOXA13 was upregulated in ESCC and promoted cell proliferation and metastasis in vivo and in vitro. Interestingly, harboring a miR-30b-binding site, HOTTIP as a molecular sponge mainly regulated miR-30b level in the nucleus and modulated the repression of HOXA13 mediated by miR-30b in the cytoplasm, resulting in the positive HOTTIP/HOXA13 correlation...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28534513/protein-disulfide-isomerase-a4-acts-as-a-novel-regulator-of-cancer-growth-through-the-procaspase-pathway
#12
T-F Kuo, T-Y Chen, S-T Jiang, K-W Chen, Y-M Chiang, Y-J Hsu, Y-J Liu, H-M Chen, K K Yokoyama, K-C Tsai, H-H Yeh, Y-R Chen, M-T Yang, C-Y Yang, W-C Yang
Protein disulfide isomerase a4 (PDIA4) is implicated in the growth and death of tumor cells; however, its molecular mechanism and therapeutic potential in cancer are unclear. Here, we found that PDIA4 expression was upregulated in a variety of tumor cell lines and human lung adenocarcinoma tissues. Knockdown and overexpression of PDIA4 in tumor cells showed that PDIA4 facilitated cell growth via the reduction of caspases 3 and 7 activity. Consistently, Lewis lung carcinoma cells overexpressing PDIA4 grew faster than did parental cells in tumor-bearing mice, as shown by a reduced survival rate, increased tumor size and metastasis, and decreased cell death and caspases 3 and 7 activity...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28534512/a-viral-microrna-downregulates-metastasis-suppressor-cd82-and-induces-cell-invasion-and-angiogenesis-by-activating-the-c-met-signaling
#13
W Li, M Hu, C Wang, H Lu, F Chen, J Xu, Y Shang, F Wang, J Qin, Q Yan, B J Krueger, R Renne, S-J Gao, C Lu
Kaposi's sarcoma (KS) as the most common AIDS-associated malignancy is etiologically caused by KS-associated herpesvirus (KSHV). KS is a highly disseminated and vascularized tumor. KSHV encodes 12 pre-microRNAs that yield 25 mature microRNAs (miRNAs), but their roles in KSHV-induced tumor metastasis and angiogenesis remain largely unclear. KSHV-encoded miR-K12-6 (miR-K6) can generate two mature miRNAs, miR-K6-5p and miR-K6-3p. Recently, we have shown that miR-K6-3p induced cell migration and angiogenesis via directly targeting SH3 domain binding glutamate-rich protein (SH3BGR)...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28534506/lsd1-demethylates-hif1%C3%AE-to-inhibit-hydroxylation-and-ubiquitin-mediated-degradation-in-tumor-angiogenesis
#14
J-Y Lee, J-H Park, H-J Choi, H-Y Won, H-S Joo, D-H Shin, M K Park, B Han, K P Kim, T J Lee, C M Croce, G Kong
Lysine-specific demethylase 1 (LSD1), which has been considered as a potential therapeutic target in human cancer, has been known to regulate many biological functions through its non-histone substrates. Although LSD1-induced hypoxia-inducible factor alpha (HIF1α) demethylation has recently been proposed, the effect of LSD1 on the relationship between HIF1α post-translational modifications (PTMs) and HIF1α-induced tumor angiogenesis remains to be elucidated. Here, we identify a new methylation site of the HIF1α protein antagonized by LSD1 and the interplay between HIF1α protein methylation and other PTMs in regulating tumor angiogenesis...
May 22, 2017: Oncogene
https://www.readbyqxmd.com/read/28534504/crystal-structure-of-the-receptor-binding-domain-of-the-spike-glycoprotein-of-human-betacoronavirus-hku1
#15
Xiuyuan Ou, Hongxin Guan, Bo Qin, Zhixia Mu, Justyna A Wojdyla, Meitian Wang, Samuel R Dominguez, Zhaohui Qian, Sheng Cui
Human coronavirus (CoV) HKU1 is a pathogen causing acute respiratory illnesses and so far little is known about its biology. HKU1 virus uses its S1 subunit C-terminal domain (CTD) and not the N-terminal domain like other lineage A β-CoVs to bind to its yet unknown human receptor. Here we present the crystal structure of HKU1 CTD at 1.9 Å resolution. The structure consists of three subdomains: core, insertion and subdomain-1 (SD-1). While the structure of the core and SD-1 subdomains of HKU1 are highly similar to those of other β-CoVs, the insertion subdomain adopts a novel fold, which is largely invisible in the cryo-EM structure of the HKU1 S trimer...
May 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28534439/hypolipidemic-and-hepatoprotective-activities-of-rosemary-and-thyme-in-gentamicin-treated-rats
#16
A M Hegazy, A S Abdel-Azeem, H M Zeidan, K S Ibrahim, Em El Sayed
Rosemary ( Rosmarinus officinalis; RM) and thyme ( Thymus vulgaris; TV) are used as remedies. We designed this work to investigate the preventive effect of aqueous extracts of RM or TV on the gentamicin (GM)-induced hepatotoxicity and abnormalities of lipid profile in rats. Both plant extracts exhibited an in vitro antioxidant activity as determined by the 1,1-diphenyl-2-picrylhydrazyl assay. Radical scavenging activity for TV extract was 48.7% and for RM extract was 25.6%. Polyphenolic determination by high-performance liquid chromatography for both extracts revealed that catechin, coumarin, cinnamic acid and rutin were detected in both extracts...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28534431/ameliorating-effect-of-anti-alzheimer-s-drugs-on-the-bidirectional-association-between-type-2-diabetes-mellitus-and-alzheimer-s-disease
#17
Amira S Ahmed, Rehab M Elgharabawy, Amal H Al-Najjar
Mild to severe forms of nervous system damage were exhibited by approximately 60-70% of diabetics. It is important to understand the association between type 2 diabetes mellitus and Alzheimer's disease. The aim of the present work is to understand the bidirectional association between type 2 diabetes and Alzheimer's disease pathogenesis, that was monitored by glycaemic status, lipid profile, amyloid beta 40 and 42 (Aβ40 and Aβ42), C-reactive protein, total creatine kinase, total lactate dehydrogenase, D-dimer and magnesium measurements, to assess the association between theses biochemical markers and each other, to estimate the possibility of utilizing the amyloid beta as biochemical marker of T2D in Alzheimer's patients, and to evaluate the effect of piracetam and memantine drugs on diabetes mellitus...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28534301/effects-of-acetyl-l-carnitine-in-diabetic-neuropathy-and-other-geriatric-disorders
#18
REVIEW
G Sergi, S Pizzato, F Piovesan, C Trevisan, N Veronese, E Manzato
A long history of diabetes mellitus and increasing age are associated with the onset of diabetic neuropathy, a painful and highly disabling complication with a prevalence peaking at 50% among elderly diabetic patients. Acetyl-L-carnitine (ALC) is a molecule derived from the acetylation of carnitine in the mitochondria that has an essential role in energy production. It has recently been proposed as a therapy to improve the symptoms of diabetic neuropathy. ALC is widely distributed in mammalian tissues, including the brain, blood-brain barrier, brain neurons, and astrocytes...
May 22, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28534260/pharmacogenetics-of-cannabinoids
#19
Szymon Hryhorowicz, Michal Walczak, Oliwia Zakerska-Banaszak, Ryszard Słomski, Marzena Skrzypczak-Zielińska
Although the application of medical marijuana and cannabinoid drugs is controversial, it is a part of modern-day medicine. The list of diseases in which cannabinoids are promoted as a treatment is constantly expanding. Cases of significant improvement in patients with a very poor prognosis of glioma or epilepsy have already been described. However, the occurrence of side effects is still difficult to estimate, and the current knowledge of the therapeutic effects of cannabinoids is still insufficient. In our opinion, the answers to many questions and concerns regarding the medical use of cannabis can be provided by pharmacogenetics...
May 22, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28534127/genetics-of-triglycerides-and-the-risk-of-atherosclerosis
#20
REVIEW
Jacqueline S Dron, Robert A Hegele
PURPOSE OF REVIEW: Plasma triglycerides are routinely measured with a lipid profile, and elevated plasma triglycerides are commonly encountered in the clinic. The confounded nature of this trait, which is correlated with numerous other metabolic perturbations, including depressed high-density lipoprotein cholesterol (HDL-C), has thwarted efforts to directly implicate triglycerides as causal in atherogenesis. Human genetic approaches involving large-scale populations and high-throughput genomic assessment under a Mendelian randomization framework have undertaken to sort out questions of causality...
July 2017: Current Atherosclerosis Reports
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