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https://www.readbyqxmd.com/read/28549350/an-anti-cancer-wxxxe-containing-azurin-polypeptide-inhibits-rac1-dependent-stat3-and-erk-gsk-3%C3%AE-signaling-in-breast-cancer-cells
#1
Zhe Zhang, Zhiyong Luo, Wenpu Min, Lin Zhang, Yaqun Wu, Xiaopeng Hu
In our previous study, we characterized a mycoplasmal small GTPase-like polypeptide of 240 amino acids that possesses an N-terminal WVLGE sequence. The N-terminal WVLGE sequence promotes activation of Rac1 and subsequent host cancer cell proliferation. To investigate the function of the WxxxE motif in the interaction with Rac1 and host tumor progression, we synthesized a 35-amino acid WVLGE-containing polypeptide derived from a cell-penetrating peptide derived from the azurin protein. We verified that the WVLGE-containing polypeptide targeted MCF-7 cells rather than MCF-10A cells...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549347/the-roles-of-ing5-in-gliomas-a-good-marker-for-tumorigenesis-and-a-potential-target-for-gene-therapy
#2
Shuang Zhao, Zhi-Juan Zhao, Hao-Yu He, Ji-Cheng Wu, Xiao-Qing Ding, Lei Yang, Ning Jia, Zhi-Jie Li, Hua-Chuan Zheng
To elucidate the anti-tumor effects and molecular mechanisms of ING5 on glioma cells, we overexpressed it in U87 cells, and examined the phenotypes and their relevant molecules. It was found that ING5 overexpression suppressed proliferation, energy metabolism, migration, invasion, and induced G2/M arrest, apoptosis, dedifferentiation, senescence, mesenchymal- epithelial transition and chemoresistance to cisplatin, MG132, paclitaxel and SAHA in U87 cells. There appeared a lower expression of N-cadherin, Twist, Slug, Zeb1, Zeb2, Snail, Ac-H3, Ac-H4, Cdc2, Cdk4 and XIAP, but a higher expression of Claudin 1, Histones 3 and 4, p21, p53, Bax, β-catenin, PI3K, Akt, and p-Akt in ING5 transfectants...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549346/functional-heterogeneity-in-tumor-derived-human-pancreatic-stellate-cells-differential-expression-of-hgf-and-implications-for-mitogenic-signaling-and-migration-in-pancreatic-cancer-cells
#3
Vegard Tjomsland, Monica Aasrum, Thoralf Christoffersen, Ivar P Gladhaug
The pancreatic stellate cell (PSC) is the principal cell type of the desmoplastic stroma of pancreatic ductal adenocarcinoma (PDAC). PSCs interact with cancer cells and influence the progression of the disease through a complex network of signaling molecules including hepatocyte growth factor (HGF). Functional heterogeneity of PSCs within a tumor might conceivably influence tumor progression. We investigated PSC populations isolated from different human PDACs and examined the effects of PSC-conditioned medium on BxPC-3 and AsPC-1 pancreatic cancer cells...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549345/a-novel-synthetic-derivative-of-quercetin-8-trifluoromethyl-3-5-7-3-4-o-pentamethyl-quercetin-inhibits-bladder-cancer-growth-by-targeting-the-ampk-mtor-signaling-pathway
#4
Ting Tao, Caimei He, Jun Deng, Yanjun Huang, Qiongli Su, Mei Peng, Meiling Yi, Kwame Oteng Darko, Hui Zou, Xiaoping Yang
Quercetin is a naturally existing compound and shows attractive anticancer properties for a variety of solid tumors including glioma, bladder cancer, hepatocellular carcinoma, breast cancer, hematological malignancies and prostate carcinoma. However, these anticancer properties have not been clinically approved due to unclear mechanistic information and its low bioactivity. In our previous study, we elucidated that quercetin activates AMPK pathway which is the major mechanism for its unique anticancer effect in bladder cancer...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549344/metformin-increases-chemo-sensitivity-via-gene-downregulation-encoding-dna-replication-proteins-in-5-fu-resistant-colorectal-cancer-cells
#5
Sung-Hee Kim, Soon-Chan Kim, Ja-Lok Ku
Metformin is most widely prescribed for type 2 diabetes. Recently, evidences have shown that metformin has anticancer effects on pancreatic-, colorectal-, ovarian-, and other cancers. Because metformin has less adverse effects and is inexpensive, it could be a useful chemo-therapeutic agent with anticancer effects. In this study, we demonstrated metformin inhibited by cell proliferation, cell migration ability, clonogenic ability, and cancer stem cell population. Metformin also induced cell cycle arrest in parental-(SNU-C5), and 5-Fu resistant-colorectal cancer cell line (SNU-C5_5FuR)...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549343/hmgb1-mediated-autophagy-attenuates-gemcitabine-induced-apoptosis-in-bladder-cancer-cells-involving-jnk-and-erk-activation
#6
Hubin Yin, Xiaoyu Yang, Wen Gu, Yan Liu, Xinyuan Li, Xiaolong Huang, Xin Zhu, Yong Tao, Xin Gou, Weiyang He
High-mobility group box 1 (HMGB1) has been found to mediate autophagy during chemotherapy in several cancers. However, whether HMGB1plays a role in autophagy and chemoresistance in bladder cancer is elusive. In this report, HMGB1 expression was found to be increased in 30 primary bladder cancer tissue specimens compared to their matched adjacent non-tumor tissues. While gemcitabine induced apoptotic cell death, it also induced HMGB1 expression and autophagy in bladder cancer T24 and BIU-87 cells. Suppressing HMGB1 expression with siRNA strongly potentiated gemcitabine-induced apoptosis...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549342/mgr1-antigen-37-kda-laminin-receptor-precursor-promotes-cellular-prion-protein-induced-multi-drug-resistance-of-gastric-cancer
#7
Guanhong Luo, Weijie Wang, Qiong Wu, Yuanyuan Lu, Tao Su, Nan Gu, Kai Li, Jingbo Wang, Rui Du, Xiaodi Zhao, Xiaohua Li, Rui Fan, Hongbo Zhang, Yongzhan Nie, Xinmin Zhou, Yongquan Shi, Jie Liang, Xin Wang, Daiming Fan
Cellular prion protein (PrPC), the infective agent of transmissible spongiform encephalopathies, is thought to be related to several cellular physiological and physiopathological processes. We have previously reported that PrPC participates in multi-drug-resistance of gastric cancer. As the salient ligand molecule of PrP for participating in internalization and propagation of the scrapie form of prion protein (PrPSc), 37 kDa laminin receptor precursor protein (37LRP) shared the same gene coding sequence of MGr1-Ag, another protein previously found to be involved in multi-drug-resistance of gastric cancer in our lab...
May 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28549333/endoplasmic-reticulum-er-stress-and-camp-pka-pathway-mediated-zn-induced-hepatic-lipolysis
#8
Yu-Feng Song, Christer Hogstrand, Chuan-Chuan Wei, Kun Wu, Ya-Xiong Pan, Zhi Luo
The present study was performed to determine the effect of Zn exposure influencing endoplasmic reticulum (ER) stress, explore the underlying molecular mechanism of Zn-induced hepatic lipolysis in a fish species of significance for aquaculture, yellow catfish Pelteobagrus fulvidraco. We found that waterborne Zn exposure evoked ER stress and unfolded protein response (UPR), and activated cAMP/PKA pathway, and up-regulated hepatic lipolysis. The increase in ER stress and lipolysis were associated with activation of cAMP/PKA signaling pathway...
May 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28549327/achievement-performance-and-characteristics-of-microbial-products-in-a-partial-nitrification-sequencing-batch-reactor-as-a-pretreatment-for-anaerobic-ammonium-oxidation
#9
Heng Dong, Keyi Zhang, Xiao Han, Bin Du, Qin Wei, Dong Wei
This study was carried out to evaluate achievement, performance and characteristics of microbial products in a partial nitrification sequencing batch reactor as a pretreatment for anaerobic ammonium oxidation (anammox). After 100 days long-term operation, the effluent NO2(-)-N/NH4(+)N ratio of the reactor was average at 1.3 and NO3(-)-N concentration was low by controlling low dissolved oxygen (DO) concentration, which was considered as the ideal influent for anammox. Specific oxygen uptake rate (SOUR) implied that (SOUR)NH4 and (SOUR)NO2 of ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) in sludge changed from 21...
May 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28549307/thymoquinone-protects-against-the-sepsis-induced-mortality-mesenteric-hypoperfusion-aortic-dysfunction-and-multiple-organ-damage-in-rats
#10
Erdem Kamil Ozer, Mustafa Tugrul Goktas, Aysun Toker, Sultan Pehlivan, Hulagu Bariskaner, Ceyhan Ugurluoglu, Alper Bektas Iskit
BACKGROUND: Thymoquinone (TQ) is a potent cytoprotective, antioxidant and anti-inflammatory agent. We aimed to investigate the possible protective effects of TQ on survival, mesenteric artery blood flow (MABF), vascular reactivity, oxidative and inflammatory injuries in a murine sepsis model induced by cecal ligation and puncture (CLP). METHODS: Wistar rats were divided into the following four groups: Sham, CLP, Sham+TQ and CLP+TQ. TQ (1mg/kg/day) or vehicle (dimethyl sulfoxide, 1mL/kg/day) was intraperitoneally injected for 3 days...
March 24, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28549290/anti-inflammatory-potential-of-hentriacontane-in-lps-stimulated-raw-264-7-cells-and-mice-model
#11
Vidushi Khajuria, Shilpa Gupta, Neha Sharma, Ashok Kumar, Nazir A Lone, Mowkshi Khullar, Prabhu Dutt, Parduman Raj Sharma, Asha Bhagat, Zabeer Ahmed
Hentriacontane, has various pharmacological effects including anti-inflammatory, antitumor and antimicrobial activities. Its anti-inflammatory potential has been demonstrated in peritoneal macrophages. However detailed studies on other models elucidating the mechanistic description of the mode of action has not been done. Hence, the aim of the present study is to evaluate the anti-inflammatory potential of hentriacontane both in-vivo (Balb/c mice) and in-vitro (RAW 264.7 cells). Cytokine inhibition of both pro-inflammatory (TNF-α, IL-6, MCP-1 and IL-1β) and anti-inflammatory (IL-10) cytokines was studied in RAW 264...
May 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28549260/identification-of-oral-cavity-biofilm-forming-bacteria-and-determination-of-their-growth-inhibition-by-acacia-arabica-tamarix-aphylla-l-and-melia-azedarach-l-medicinal-plants
#12
Muhammad Khalid, Danial Hassani, Muhammad Bilal, Zahid Ali Butt, Muhammad Hamayun, Ayaz Ahmad, Danfeng Huang, Anwar Hussain
OBJECTIVE: Biofilms are complex, multi-species bacterial communities that colonize the oral cavity in the form of plaque and are known to cause dental caries and periodontal disease. Present study demonstrated the potential of three selected medicinal plants against isolated and identified dental biofilm forming strains. METHODS: Pathogenic bacteria from dental biofilms were isolated, cultured, identified by phylogenetic analysis using PCR-based 16S ribosomal RNA (or 16S rRNA) nucleotide sequences and were analyzed for their biofilm forming capability...
May 18, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28549259/purinergic-2x7-receptor-activation-regulates-wnt-signaling-in-human-mandibular-derived-osteoblasts
#13
Pimrumpai Rochanakit Sindhavajiva, Panunn Sastravaha, Mansuang Arksornnukit, Prasit Pavasant
OBJECTIVE: Purinergic 2X7 receptor (P2X7R) activation modulates in vitro mineralization by primary rat and human osteoblasts. However, the detailed mechanism of how P2X7R activation affects primary human osteoblasts remains unclear. The aim of this study was to investigate the effect of P2X7R activation on human mandibular-derived osteoblast (hMOB) differentiation. DESIGN: Primary human osteoblasts were obtained from non-pathologic mandibular bone from healthy patients...
May 18, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28549244/ll-37-induced-human-mast-cell-activation-through-g-protein-coupled-receptor-mrgx2
#14
Yangyang Yu, Yuanyuan Zhang, Yarui Zhang, Yihong Lai, Wenwen Chen, Zhangang Xiao, Wei Zhang, Meiling Jin, Bo Yu
Human LL-37 is an important class of cationic antimicrobial peptide (CAP) that is known to stimulate mast cell activation. While many studies have been conducted on LL-37, to date little is known about the functional receptors for LL-37-induced human mast cell activation, in particular in terms of the release of de novo synthesized mediators. Thus, the aim of the present study is to identify the functional receptors for LL-37-induced human mast cell activation in terms of the degranulation and release of de novo synthesized mediators and investigate the downstream signalling pathways involved in mast cell activation...
May 23, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28549227/too-much-or-just-enough-of-a-good-thing-vascular-endothelial-growth-factor-inhibition-in-renal-cell-carcinoma
#15
Lauren C Harshman
No abstract text is available yet for this article.
June 1, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28549219/design-synthesis-and-properties-of-a-potent-inhibitor-of-pseudomonas-aeruginosa-deacetylase-lpxc
#16
Grazia Piizzi, David T Parker, Yunshan Peng, Markus Rolf Dobler, Anup Patnaik, Som Wattanasin, Eugene Liu, Francois Lenoir, Jill Nunez, John Kerrigan, David McKenney, Colin S Osborne, Donghui Yu, Leanne Lanieri, Jade Bojkovic, JoAnne Dzink-Fox, Maria-Dawn Lilly, Elizabeth R Sprague, Yipin Lu, Hongming Wang, Srijan Ranjitkar, Bing Wang, Meir Glick, Lawrence G Hamann, Ruben Tommasi, Xia Yang, Charles R Dean
Over the past several decades the frequency of antibacterial resistance in hospitals, including multi-drug resistance (MDR) and its association with serious infectious diseases, has increased at alarming rates. Pseudomonas aeruginosa is a leading cause of nosocomial infections, and resistance to virtually all approved antibacterial agents is emerging in this pathogen. To address the need for new agents to treat MDR P. aeruginosa, we focused on inhibiting the first committed step in the biosynthesis of lipid A, the deacetylation of uridyldiphospho-3-O-(R-hydroxydecanoyl)-N-acetylglucosamine by the enzyme LpxC...
May 26, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28549218/exosite-2-directed-ligands-attenuate-protein-c-activation-by-the-thrombin-thrombomodulin-complex
#17
Kai Chen, Alan R Stafford, Chengliang Wu, Calvin Yeh, Paul Y Kim, James C Fredenburgh, Jeffrey I Weitz
Thrombin activity, inhibition, and localization are regulated by two exosites that flank the active site. Substrates, cofactors and inhibitors bind to exosite 1 to promote active site access, whereas exosite 2 interactions retain thrombin on cells, platelets, and proteins. The exosites also serve allosteric roles, whereby ligand binding alters thrombin activity. Previously, we showed that ligands that bind exosite 2 attenuate the exosite 1-mediated interaction of thrombin with fibrin, demonstrating allosteric connection between the exosites...
May 26, 2017: Biochemistry
https://www.readbyqxmd.com/read/28549199/effect-of-1-25-oh2d3-on-the-proliferation-of-human-mesangial-cells-and-their-expression-of-ki67
#18
D Zhao, C-J Zhang, R Yang, J-P Chen, L Ma, G Liu, X-P Yang
Previous studies have found that 1,25-dihydroxyvitamin D3 [1,25(OH)2D3 or VD3] exerts many biological effects, including the inhibition of cell proliferation and induction of apoptosis, but its mechanism of action remains unclear. The goal of our investigation was to explore the effects of 1,25(OH)2D3 on the proliferation of cultured human mesangial cells and their expression of Ki67 in vitro, and to establish its mechanism of action. Cultured human mesangial cells were randomly divided into the following four groups: normal control (N group; administered Dulbecco's modified Eagle's medium containing 5% fetal bovine serum), proliferation [epidermal growth factor (EGF) group; administered 10 μg/L EGF], VD3 intervention [administered 10(-8) M 1,25(OH)2D3], and proliferation and intervention [EGF+VD3 group; administered 10 μg/L EGF and 10(-8) M 1,25(OH)2D3]...
May 25, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28549184/coiled-coil-interactions-mediate-serine-integrase-directionality
#19
Kushol Gupta, Robert Sharp, Jimmy B Yuan, Huiguang Li, Gregory D Van Duyne
Serine integrases are bacteriophage enzymes that carry out site-specific integration and excision of their viral genomes. The integration reaction is highly directional; recombination between the phage attachment site attP and the host attachment site attB to form the hybrid sites attL and attR is essentially irreversible. In a recent model, extended coiled-coil (CC) domains in the integrase subunits are proposed to interact in a way that favors the attPxattB reaction but inhibits the attLxattR reaction. Here, we show for the Listeria innocua integrase (LI Int) system that the CC domain promotes self-interaction in isolated Int and when Int is bound to attachment sites...
May 26, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28549178/rhoa-rock-inhibition-improves-the-beneficial-effects-of-glucocorticoid-treatment-in-dystrophic-muscle-implications-for-stem-cell-depletion
#20
Xiaodong Mu, Ying Tang, Koji Takayama, Wanqun Chen, Aiping Lu, Bing Wang, Kurt Weiss, Johnny Huard
Glucocorticoid treatment represents a standard palliative treatment for Duchenne muscular dystrophy (DMD) patients, but various adverse effects have limited this treatment. In an effort to understand the mechanism(s) by which glucocorticoids impart their effects on the dystrophic muscle, and potentially reduce the adverse effects, we have studied the effect of prednisolone treatment in dystrophin/utrophin double knockout (dKO) mice, which exhibit a severe dystrophic phenotype due to rapid muscle stem cell depletion...
May 26, 2017: Human Molecular Genetics
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