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https://www.readbyqxmd.com/read/28912645/anti-inflammatory-effect-of-glucagon-like-peptide-1-receptor-agonist-exendin-4-through-modulation-of-ib1-jip1-expression-and-jnk-signaling-in-stroke
#1
Soojin Kim, Jaewon Jeong, Hye-Seon Jung, Bokyung Kim, Ye-Eun Kim, Da-Sol Lim, So-Dam Kim, Yun Seon Song
Glucagon like peptide-1 (GLP-1) stimulates glucose-dependent insulin secretion. Dipeptidyl peptidase-4 (DPP-4) inhibitors, which block inactivation of GLP-1, are currently in clinical use for type 2 diabetes mellitus. Recently, GLP-1 has also been reported to have neuroprotective effects in cases of cerebral ischemia. We therefore investigated the neuroprotective effects of GLP-1 receptor (GLP-1R) agonist, exendin-4 (ex-4), after cerebral ischemia-reperfusion injury. Transient middle cerebral artery occlusion (tMCAO) was induced in rats by intracerebroventricular (i...
August 2017: Experimental Neurobiology
https://www.readbyqxmd.com/read/28911303/role-of-protein-kinases-and-their-inhibitors-in-radiation-response-of-tumor-cells
#2
Byeong Mo Kim, Wonsuck Yoon, Jung-Hyun Shim, Haiyoung Jung, Ji Hong Lim, Hyun-Jung Choi, MiRan Seo, Tae Ho Lee, Sang-Hyun Min
Phosphorylation, the addition of a phosphate group to a molecule, is an effective way of regulating the biological properties of that molecule. Protein phosphorylation is a post translational modification of proteins and affects cellular signaling transduction. Protein kinases induce phosphorylation by catalyzing the transfer of phosphate groups to serine, threonine, and tyrosine residues on protein substrates. Consistent with their roles in cancer, protein kinases have emerged as one of the most clinically useful target molecules in pharmacological cancer therapy...
June 7, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28902708/the-effects-of-mlc901-on-tau-phosphorylation
#3
Wei Thye Lee, Christopher Chen Li Hsian, Yun-An Lim
Tauopathies are neurodegenerative diseases that are characterized by the presence of hyperphosphorylated tau-containing neurofibrillary tangles (NFTs) in the brain and include Alzheimer's disease and frontotemporal dementia, which lack effective disease-modifying treatments. The presence of NFTs is known to correlate with cognition impairment, suggesting that targeting tau hyperphosphorylation may be therapeutically effective. MLC901 is a herbal formulation that is currently used in poststroke recovery and consists of nine herbal components...
September 11, 2017: Neuroreport
https://www.readbyqxmd.com/read/28900259/selective-tubular-activation-of-hypoxia-inducible-factor-2%C3%AE-has-dual-effects-on-renal-fibrosis
#4
Kyoung Hye Kong, Hyung Jung Oh, Beom Jin Lim, Minsuk Kim, Ki-Hwan Han, Youn-Hee Choi, Kihwan Kwon, Bo Young Nam, Kyoung Sook Park, Jung Tak Park, Seung Hyeok Han, Tae-Hyun Yoo, Shina Lee, Seung-Jung Kim, Duk-Hee Kang, Kyu Bok Choi, Vera Eremina, Susan E Quaggin, Dong-Ryeol Ryu, Shin-Wook Kang
Hypoxia-inducible factor (HIF) is a key transcriptional factor in the response to hypoxia. Although the effect of HIF activation in chronic kidney disease (CKD) has been widely evaluated, the results have been inconsistent until now. This study aimed to investigate the effects of HIF-2α activation on renal fibrosis according to the activation timing in inducible tubule-specific transgenic mice with non-diabetic CKD. HIF-2α activation in renal tubular cells upregulated mRNA and protein expressions of fibronectin and type 1 collagen associated with the activation of p38 mitogen-activated protein kinase...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28899515/the-water-extract-of-liuwei-dihuang-possesses-multi-protective-properties-on-neurons-and-muscle-tissue-against-deficiency-of-survival-motor-neuron-protein
#5
Yu-Ting Tseng, Yuh-Jyh Jong, Wei-Fang Liang, Fang-Rong Chang, Yi-Ching Lo
BACKGROUND: Deficiency of survival motor neuron (SMN) protein, which is encoded by the SMN1 and SMN2 genes, induces widespread splicing defects mainly in spinal motor neurons, and leads to spinal muscular atrophy (SMA). Currently, there is no effective treatment for SMA. Liuwei dihuang (LWDH), a traditional Chinese herbal formula, possesses multiple therapeutic benefits against various diseases via modulation of the nervous, immune and endocrine systems. Previously, we demonstrated water extract of LWDH (LWDH-WE) protects dopaminergic neurons and improves motor activity in models of Parkinson's disease...
October 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28886341/cdk10-mutations-in-humans-and-mice-cause-severe-growth-retardation-spine-malformations-and-developmental-delays
#6
Christian Windpassinger, Juliette Piard, Carine Bonnard, Majid Alfadhel, Shuhui Lim, Xavier Bisteau, Stéphane Blouin, Nur'Ain B Ali, Alvin Yu Jin Ng, Hao Lu, Sumanty Tohari, S Zakiah A Talib, Noémi van Hul, Matias J Caldez, Lionel Van Maldergem, Gökhan Yigit, Hülya Kayserili, Sameh A Youssef, Vincenzo Coppola, Alain de Bruin, Lino Tessarollo, Hyungwon Choi, Verena Rupp, Katharina Roetzer, Paul Roschger, Klaus Klaushofer, Janine Altmüller, Sudipto Roy, Byrappa Venkatesh, Rudolf Ganger, Franz Grill, Farid Ben Chehida, Bernd Wollnik, Umut Altunoglu, Ali Al Kaissi, Bruno Reversade, Philipp Kaldis
In five separate families, we identified nine individuals affected by a previously unidentified syndrome characterized by growth retardation, spine malformation, facial dysmorphisms, and developmental delays. Using homozygosity mapping, array CGH, and exome sequencing, we uncovered bi-allelic loss-of-function CDK10 mutations segregating with this disease. CDK10 is a protein kinase that partners with cyclin M to phosphorylate substrates such as ETS2 and PKN2 in order to modulate cellular growth. To validate and model the pathogenicity of these CDK10 germline mutations, we generated conditional-knockout mice...
September 7, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28885691/fibroblast-growth-factor-2-induces-proliferation-and-distribution-of-g2-m-phase-of-bovine-endometrial-cells-involving-activation-of-pi3k-akt-and-mapk-cell-signaling-and-prevention-of-effects-of-er-stress
#7
Whasun Lim, Hyocheol Bae, Fuller W Bazer, Gwonhwa Song
Fibroblast growth factor 2 (FGF2) is abundantly expressed in conceptuses and endometria during pregnancy in diverse animal models including domestic animals. However, its intracellular mechanism of action has not been reported for bovine endometrial cells. Therefore, the aim of this study was to identify functional roles of FGF2 in bovine endometrial (BEND) cell line which has served as a good model system for investigating regulation of signal transduction following treatment with interferon-tau (IFNT) in vitro...
September 8, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28871255/signaling-to-the-epigenome-new-insights-into-the-roles-of-nuclear-signaling-kinases-in-the-context-of-the-immune-system-and-cancer
#8
EDITORIAL
Pek Siew Lim, Kum Kum Khanna, Sudha Rao
No abstract text is available yet for this article.
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28869759/p75-neurotrophin-receptor-interacts-with-bace1-and-promotes-its-localization-in-endosomes-aggravating-amyloidogenesis
#9
Khalil Saadipour, Noralyn B Mañucat-Tan, Yoon Lim, Damien J Keating, Kevin S Smith, Jin-Hua Zhong, Hong Liao, Larisa Bobrovskaya, Yan-Jiang Wang, Moses V Chao, Xin-Fu Zhou
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by a progressive deposition of amyloid-beta (Aβ) and dysregulation of neurotrophic signaling, causing synaptic dysfunction, loss of memory, and cell death. The expression of p75 neurotrophin receptor is elevated in the brain of AD patients, suggesting its involvement in this disease. However, the exact mechanism of its action is not yet clear. Here, we show that p75 interacts with beta-site amyloid precursor protein cleaving enzyme-1 (BACE1), and this interaction is enhanced in the presence of Aβ...
September 4, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28865022/drebrin-in-alzheimer-s-disease
#10
Yuta Ishizuka, Kenji Hanamura
Alzheimer's disease (AD) is a neurodegenerative disorder accompanied by severe progressive memory and cognitive impairment. The brain of AD patients has an abundance of two abnormal structures, amyloid plaques (senile plaques) and neurofibrillary tangles. In addition, drebrin loss is another hallmark of AD brains, which is a common feature in the brain of both AD patients and AD mouse models. Strong evidence from human genetics and transgenic mouse models has indicated that amyloid β (Aβ) is part of the etiology and pathogenesis of AD...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28861770/economic-considerations-in-the-use-of-novel-targeted-therapies-for-lung-cancer-review-of-current-literature
#11
Hamzeh Albaba, Charles Lim, Natasha B Leighl
Lung cancer remains the leading cause of cancer-related death and economic burden worldwide. Despite the heavy toll of lung cancer, multiple new advances have improved patient outcomes, largely through precision medicine and targeted therapy. The associated rising economic burden however may impact the uptake of novel therapeutic agents in lung cancer, thereby limiting patient access. This article identifies and reviews economic evaluations of targeted agents in lung cancer in the era of precision medicine...
August 31, 2017: PharmacoEconomics
https://www.readbyqxmd.com/read/28858528/phospho-priming-confers-functionally-relevant-specificities-for-rad53-kinase-autophosphorylation
#12
Eric Sheng-Wen Chen, Jui-Hung Weng, Yu-Hou Chen, Shun-Chang Wang, Xiao-Xia Liu, Wei-Cheng Huang, Tsutomu Matsui, Yoshiaki Kawano, Jiahn-Haur Liao, Liang-Hin Lim, Yoshitaka Bessho, Kai-Fa Huang, Wen-Jin Wu, Ming-Daw Tsai
The vast majority of in vitro structural and functional studies of the activation mechanism of protein kinases use the kinase domain alone. Well-demonstrated effects of regulatory domains or allosteric factors are scarce for serine/threonine kinases. Here we use a site-specifically phosphorylated SCD1-FHA1-kinase three-domain construct of the serine/threonine kinase Rad53 to show the effect of phospho-priming, an in vivo regulatory mechanism, on the autophosphorylation intermediate and specificity. Unphosphorylated Rad53 is a flexible monomer in solution but is captured in an asymmetric enzyme:substrate complex in crystal with the two FHA domains separated from each other...
September 15, 2017: Biochemistry
https://www.readbyqxmd.com/read/28855340/cdk8-19-mediator-kinases-potentiate-induction-of-transcription-by-nf%C3%AE%C2%BAb
#13
Mengqian Chen, Jiaxin Liang, Hao Ji, Zhengguan Yang, Serena Altilia, Bing Hu, Adam Schronce, Martina S J McDermott, Gary P Schools, Chang-Uk Lim, David Oliver, Michael S Shtutman, Tao Lu, George R Stark, Donald C Porter, Eugenia V Broude, Igor B Roninson
The nuclear factor-κB (NFκB) family of transcription factors has been implicated in inflammatory disorders, viral infections, and cancer. Most of the drugs that inhibit NFκB show significant side effects, possibly due to sustained NFκB suppression. Drugs affecting induced, but not basal, NFκB activity may have the potential to provide therapeutic benefit without associated toxicity. NFκB activation by stress-inducible cell cycle inhibitor p21 was shown to be mediated by a p21-stimulated transcription-regulating kinase CDK8...
August 30, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28854981/rosiglitazone-increases-endothelial-cell-migration-and-vascular-permeability-through-akt-phosphorylation
#14
Yun Hyi Ku, Bong-Jun Cho, Min Joo Kim, Soo Lim, Young Joo Park, Hak C Jang, Sung Hee Choi
BACKGROUND: Thiazolidinediones (TZDs), peroxisome proliferator-activated receptor-γ (PPAR-γ) agonists, exhibit anti-inflammatory and antioxidant properties and inhibit endothelial inflammation and dysfunction, which is anti-atherogenic. However, fluid retention, which may lead to congestive heart failure and peripheral edema, is also a concern, which may result from endothelial cell leakage. In the current study, we examined the effects of PPAR-γ agonists on vascular endothelial cell migration and permeability in order to determine its underlying mechanisms...
August 30, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28852850/antimicrobial-mechanism-of-oleanolic-and-ursolic-acids-on-streptococcus-mutans-ua159
#15
Soon-Nang Park, Yun Kyong Lim, Mi-Hwa Choi, Eugene Cho, Iel Soo Bang, Jung Min Kim, Sug-Joon Ahn, Joong-Ki Kook
Triterpenoid saponin derivatives oleanolic acid (OA) and ursolic acid (UA), but not betulinic acid (BA), were previously found to have strong antimicrobial activity against Streptococcus mutans. OA and UA inhibited the transcription of genes related to peptidoglycan biosynthesis, thereby preventing bacterial growth. However, it is not clear whether this is the only pathway involved in the antimicrobial activity of these compounds against S. mutans. Therefore, we used quantitative real-time PCR (qPCR) and microarray analyses to examine the expression of genes related to essential metabolic pathways in S...
August 29, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28852829/pal-12-a-new-anti-aging-hexa-peptoid-inhibits-uvb-induced-photoaging-in-human-dermal-fibroblasts-and-3d-reconstructed-human-full-skin-model-keraskin-ft%C3%A2
#16
Daeun Song, Hyeonji Park, Su-Hyon Lee, Mi Jung Kim, Eun-Joo Kim, Kyung-Min Lim
Peptoids are a class of peptidomimetics whose pharmacological activities are widely investigated owing to their remarkable biological stability. However, the utilities of peptoids as cosmetic functional ingredients have not been fully explored. Here, we investigated anti-aging effects of PAL-12, a new hexa-peptoid, on UVB-induced photoaging in human dermal fibroblasts (HDFs) and a 3D reconstituted human full skin model, Keraskin-FT™. PAL-12 suppressed matrix metalloproteinase-1 (MMP-1) expression induced by UVB irradiation along with the attenuation of MMP-1 secretion as determined by ELISA assay...
August 29, 2017: Archives of Dermatological Research
https://www.readbyqxmd.com/read/28832962/rubiarbonone-c-inhibits-platelet-derived-growth-factor-induced-proliferation-and-migration-of-vascular-smooth-muscle-cells-through-the-fak-map-kinase-and-stat3-tyr-705-signaling-pathways
#17
Hyun-Soo Park, Khong Trong Quan, Joo-Hui Han, Sang-Hyuk Jung, Do-Hyung Lee, Eunji Jo, Tae-Wan Lim, Kyung-Sun Heo, Min Kyun Na, Chang-Seon Myung
BACKGROUND AND PURPOSE: The proliferation and migration of vascular smooth muscle cells (VSMCs) induced by platelet-derived growth factor (PDGF) are important steps in cardiovascular diseases, including neointimal lesion formation, myocardial infarction, and atherosclerosis. Here, we evaluated the rubiarbonone C-mediated signaling pathways that regulate PDGF-induced VSMC proliferation and migration. EXPERIMENTAL APPROACH: Cell proliferation and migration were measured in cells treated with rubiarbonone C followed by PDGF-BB treatment using the MTT assay, [(3) H]-thymidine incorporation, flow cytometry, and wound healing migration assay, matrix metalloproteinase (MMP) gelatin zymography, a fluorescence assay for F-actin...
August 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28830788/zearalenone-and-alpha-zearalenol-inhibit-the-synthesis-and-secretion-of-pig-follicle-stimulating-hormone-via-the-non-classical-estrogen-membrane-receptor-gpr30
#18
Jing He, Chao Wei, Yueqin Li, Ying Liu, Yue Wang, Jirong Pan, Jiali Liu, Yingjie Wu, Sheng Cui
Zearalenone (ZEA) is one of the most popular endocrine-disrupting chemicals and is mainly produced by fungi of the genus Fusarium. The excessive intake of ZEA severely disrupts human and animal fertility by affecting the reproductive axis. However, most studies on the effects of ZEA and its metabolite α-zearalenol (α-ZOL) on reproductive systems have focused on gonads. Few studies have investigated the endocrine-disrupting effects of ZEA and α-ZOL on pituitary gonadotropins, including follicle-stimulating hormone (FSH) and luteinizing hormone (LH)...
August 19, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28827170/modulation-of-aba-signaling-by-altering-vxg%C3%AE-l-motif-of-pp2cs-in-oryza-sativa
#19
Seungsu Han, Myung Ki Min, Su-Youn Lee, Chae Woo Lim, Nikita Bhatnagar, Yeongmok Lee, Donghyuk Shin, Ka Young Chung, Sung Chul Lee, Beom-Gi Kim, Sangho Lee
The abscisic acid (ABA) signaling pathway is regulated by clade A type 2C protein phosphatases (PP2CAs) in plants. In the presence of ABA, PP2Cs release stress/ABA-activated protein kinases by binding to ABA-bound receptors (PYL/RCARs) for activation. Although the wedging tryptophan in PP2Cs is critical in the interaction with PYL/RCARs in Arabidopsis and rice, it remains elusive as to how other interface regions are involved in the interaction. Here, we report the identification of a conserved region on PP2Cs, termed the VxGΦL motif, which modulates the interaction with PYL/RCARs through its second and fourth residues...
September 12, 2017: Molecular Plant
https://www.readbyqxmd.com/read/28826663/exercise-responsive-phosphoproteins-in-the-heart
#20
Hongbo Guo, Ruth Isserlin, Andrew Emili, Jatin G Burniston
Endurance exercise improves cardiac performance and affords protection against cardiovascular diseases but the signalling events that mediate these benefits are largely unexplored. Phosphorylation is a widely studied post-translational modification involved in intracellular signalling, and to discover novel phosphorylation events associated with exercise we have profiled the cardiac phosphoproteome response to a standardised exercise test to peak oxygen uptake (VO2peak). Male Wistar rats (346±18g) were assigned to 3 independent groups (n=6, in each) that were familiarised with running on a motorised treadmill within a metabolic chamber...
August 4, 2017: Journal of Molecular and Cellular Cardiology
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