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https://www.readbyqxmd.com/read/29148699/controlling-ligand-spacing-on-surface-polyproline-based-fluorous-microarray-as-a-tool-in-spatial-specificity-analysis-and-inhibitor-development-for-carbohydrate-protein-interactions
#1
Tse-Hsueh Lin, Cin-Hao Lin, Ying-Jie Liu, Chun Yi Huang, Yen-Cheng Lin, Sheng-Kai Wang
Multivalent carbohydrate-protein interactions are essential for many biological processes. Convenient characterization for multivalent binding property of proteins will aid the development of molecules to manipulate these processes. We exploited the polyproline helix II (PPII) structure as molecular scaffolds to adjust the distances between glycan ligand attachment sites at 9, 18, and 27 Å on a peptide scaffold. Optimized fluorous groups were also introduced to the peptide scaffold for immobilization to the microarray surface through fluorous interaction to control the orientation of the helical scaffolds...
November 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29147967/association-of-inflammatory-bowel-disease-with-arthritis-evidence-from-in-silico-gene-expression-patterns-and-network-topological-analysis
#2
Anukriti Verma, Pallavi Somvanshi, Shafiul Haque, Bhawna Rathi, Shivani Sharda
Inflammatory bowel disease (IBD) is an idiopathic prolonged ailment accountable for inflammatory conditions of the intestine. Moreover, arthritis is responsible for joints' stiffness and painful inflammation. IBD shows certain articular extra-intestinal manifestations associating IBD with arthritis. IBD associated arthritis is found to be linked with ankylosing spondylitis (AS). The present study insights for the potential and putative drug targets and biomarkers of IBD associated with arthritis using in silico approaches...
November 17, 2017: Interdisciplinary Sciences, Computational Life Sciences
https://www.readbyqxmd.com/read/29147618/programmed-cell-death-ligands-expression-in-phaeochromocytomas-and-paragangliomas-relationship-with-the-hypoxic-response-immune-evasion-and-malignant-behavior
#3
David J Pinato, James R Black, Sebastian Trousil, Roberto E Dina, Pritesh Trivedi, Francesco A Mauri, Rohini Sharma
The hypoxic response underlies the pathogenesis and malignant behavior of PCC/PGL. Regulation of PD-1 receptor-ligand signaling, a therapeutically actionable driver of the anti-tumor immune response, is a hypoxic-driven trait across malignancies. We evaluated the prognostic role of PD ligands in association with biomarkers of hypoxia and angiogenesis in patients with PCC/PGL. Tissue microarrays sections including consecutive cases diagnosed between 1983-2011 were stained for PD-L1 and 2, hypoxia inducible factor 1a (Hif-1a), Carbonic Anhydrase IX (CaIX), Vascular Endothelial Growth Factor-A (VEGF-A)...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29146387/dilemmas-in-genetic-counseling-for-low-penetrance-neuro-susceptibility-loci-detected-on-prenatal-chromosomal-microarray-analysis
#4
Dana Brabbing-Goldstein, Adi Reches, Ran Svirsky, Anat Bar-Shira, Yuval Yaron
BACKGROUND: Chromosomal microarray analysis is standard of care in fetuses with malformations, detecting clinically significant copy number variants in 5-7% of cases over conventional karyotyping. However, it also detects variants of uncertain significance in 1.6% - 4.2% of the cases, some of which are low-penetrance neuro-susceptibility loci. The interpretation of these variants in pregnancy is particularly challenging, because the significance is often unclear and the clinical implications may be difficult to predict...
November 13, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29146379/lt-adjuvant-modulates-epitope-specificity-and-improves-the-efficacy-of-murine-antibodies-elicited-by-sublingual-vaccination-with-the-n-terminal-domain-of-streptococcus-mutans-p1
#5
Milene Tavares Batista, Ewerton Lucena Ferreira, Gisela de Souza Pereira, Phillip Stafford, Denicar Lina Nascimento Fabris Maeda, Juliana Falcão Rodrigues, L Jeannine Brady, Stephen Albert Johnston, Luís Carlos de Souza Ferreira, Rita de Cássia Café Ferreira
In this study, we evaluated the immunogenicity, protective efficacy and peptide-based immune signatures of antibodies raised in mice after sublingual immunization with a recombinant form of the P1 (aka AgI/II, PAc) adhesin (P139-512) of Streptococcus mutans, a major etiological agent of dental caries. Sublingual administration of P139-512 in combination with the mucosal adjuvant LTK4R (a derivative of heat-labile LT toxin) induced strong and long-lasting systemic and mucosal immune responses. Incorporation of the adjuvant resulted in an enhancement of the anti-adhesive and anti-colonization activity against S...
November 13, 2017: Vaccine
https://www.readbyqxmd.com/read/29146111/microrna-expression-patterns-in-human-anterior-cingulate-and-motor-cortex-a-study-of-dementia-with-lewy-bodies-cases-and-controls
#6
Peter T Nelson, Wang-Xia Wang, Sarah A Janse, Katherine L Thompson
OVERVIEW: MicroRNAs (miRNAs) have been implicated in neurodegenerative diseases including Parkinson's disease and Alzheimer's disease (AD). Here, we evaluated the expression of miRNAs in anterior cingulate (AC; Brodmann area [BA] 24) and primary motor (MO; BA 4) cortical tissue from aged human brains in the University of Kentucky AD Center autopsy cohort, with a focus on dementia with Lewy bodies (DLB). METHODS: RNA was isolated from gray matter of brain samples with pathology-defined DLB, AD, AD+DLB, and low-pathology controls, with n=52 cases initially included (n=23 with DLB), all with low (<4hrs) postmortem intervals...
November 13, 2017: Brain Research
https://www.readbyqxmd.com/read/29145809/genome-wide-characterization-and-expression-profiling-of-pdi-family-gene-reveals-function-as-abiotic-and-biotic-stress-tolerance-in-chinese-cabbage-brassica-rapa-ssp-pekinensis
#7
Md Abdul Kayum, Jong-In Park, Ujjal Kumar Nath, Gopal Saha, Manosh Kumar Biswas, Hoy-Taek Kim, Ill-Sup Nou
BACKGROUND: Protein disulfide isomerase (PDI) and PDI-like proteins contain thioredoxin domains that catalyze protein disulfide bond, inhibit aggregation of misfolded proteins, and function in isomerization during protein folding in endoplasmic reticulum and responses during abiotic stresses.Chinese cabbage is widely recognized as an economically important, nutritious vegetable, but its yield is severely hampered by various biotic and abiotic stresses. Because of, it is prime need to identify those genes whose are responsible for biotic and abiotic stress tolerance...
November 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29145712/cartilage-microrna-dysregulation-during-the-onset-and-progression-of-mouse-osteoarthritis-is-independent-of-aggrecanolysis-and-overlaps-with-candidates-from-end-stage-human-disease
#8
Louise H W Kung, Varshini Ravi, Lynn Rowley, Constanza Angelucci, Amanda J Fosang, Katrina M Bell, Christopher B Little, John F Bateman
OBJECTIVE: To identify candidate microRNAs that potentially regulate the initiation and progression of osteoarthritis. METHODS: Osteoarthritis was induced in 10-12 week old male wild-type C57BL6 mice and in mice resistant to aggrecanase cleavage (Acan p.374ALGS→374NVYS) by destabilization of the medial meniscus (DMM). Osteoarthritis pathology was scored histologically. RNA from cartilage and subchondral bone were harvested in parallel by laser micro-dissection at 1 and 6 weeks post-surgery...
November 16, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29145521/characterization-of-rubella-specific-humoral-immunity-following-two-doses-of-mmr-vaccine-using-proteome-microarray-technology
#9
Iana H Haralambieva, Michael J Gibson, Richard B Kennedy, Inna G Ovsyannikova, Nathaniel D Warner, Diane E Grill, Gregory A Poland
INTRODUCTION//BACKGROUND: The lack of standardization of the currently used commercial anti-rubella IgG antibody assays leads to frequent misinterpretation of results for samples with low/equivocal antibody concentration. The use of alternative approaches in rubella serology could add new information leading to a fuller understanding of rubella protective immunity and neutralizing antibody response after vaccination. METHODS: We applied microarray technology to measure antibodies to all rubella virus proteins in 75 high and 75 low rubella virus-specific antibody responders after two MMR vaccine doses...
2017: PloS One
https://www.readbyqxmd.com/read/29145206/microrna-expression-profiling-of-pancreatic-cancer-cell-line-l3-6p1-following-b7-h4-knockdown
#10
Yun Qian, Limin Feng, Weigen Wu, Tianhao Weng, Chenyu Hu, Bo Hong, Frederick X C Wang, Lingwei Shen, Qi Wang, Xin Jin, Hangping Yao
BACKGROUND/AIMS: Co-stimulating molecule B7-H4 regulates T cell-mediated immune responses, participates in tumor immune escape, and promotes the proliferation and metastasis of pancreatic cancer cells. However, the specific mechanisms are unclear. MicroRNAs (miRNAs) participated in the pathogenesis and progression of cancer. METHODS: In this study, a microarray technique was used to screen B7-H4-related differentially expressed miRNAs in a pancreatic cancer cell line find those associated with pancreatic cancer...
November 17, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29145193/huaier-extract-inhibits-breast-cancer-progression-through-a-lncrna-h19-mir-675-5p-pathway
#11
Jijun Wang, Xiaolong Wang, Tong Chen, Liyu Jiang, Qifeng Yang
BACKGROUND/AIMS: Increasing evidence indicates that Huaier extract has promising therapeutic effects against cancer. However, the mechanisms that underlie its anti-tumor effects remain unclear. In recent years, various studies have shown that long noncoding RNAs (lncRNAs) play a critical role in the regulation of cancer development and progression. Here, we explored the role of lncRNAs in Huaier-induced tumor suppression. METHODS: Microarray profiling was performed to identify the candidate lncRNAs affected by Huaier extract...
November 17, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29144959/induction-of-innervation-by-encapsulated-adipocytes-with-engineered-vitamin-a-metabolism
#12
Q Shen, R Yasmeen, J Marbourg, L Xu, J L Yu, P Fadda, A Flechtner, L J Lee, P G Popovich, O Ziouzenkova
Innervation is a fundamental basis for function and survival of tissues. In the peripheral tissues, degenerative diseases create a neurotoxic metabolic milieu that either causes neurodegeneration or fails to sustain regenerative growth and reinnervation of injured/diseased tissues. Encapsulation of cells producing neurotrophic factors can augment axon growth and neuron survival; however, sustained innervation in vivo requires a combination of factors promoting axon growth and guidance pathway that are released in a tissue-specific context...
October 28, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/29143985/silencing-of-col1a2-col6a3-and-thbs2-inhibits-gastric-cancer-cell-proliferation-migration-and-invasion-while-promoting-apoptosis-through-the-pi3k-akt-signaling-pathway
#13
Ran Ao, Lin Guan, Ying Wang, Jia-Ni Wang
This study explores the effect of COL1A2, COL6A3, and THBS2 gene silencing on proliferation, migration, invasion, and apoptosis of gastric cancer cells through the PI3K-Akt signaling pathway. The gastric cancer microarray expression data (GSE19826, GSE79973, and GSE65801) was analyzed. Gastric cancer tissues and corresponding adjacent normal tissues were extracted from patients. Positive expression rate of PI3K, Akt, and p-Akt was measured with immunohistochemistry. Two cell lines, BGC-823 and SGC-7901, were transfected and cells were grouped into blank, negative control, COL1A2-shRNA, COL6A3-shRNA, and THBS2-shRNA groups...
November 16, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29143172/identification-of-key-genes-and-construction-of-microrna-mrna-regulatory-networks-in-bladder-smooth-muscle-cell-response-to-mechanical-stimuli-using-microarray-expression-profiles-and-bioinformatics-analysis
#14
Liao Peng, De-Yi Luo
PURPOSE: To identify keys genes and elucidate miRNA-mRNA regulatory networks in Bladder smooth muscle cell (BSMC) response to mechanical stimuli. METHODS: Human BSMCs, seeded on a silicone membrane, were subjected to mechanical stretch or without stretch. Microarray was used to analyze the differential expression of mRNAs and miRNAs between human BSMCs under mechanical stretch and control static control group. Differentially expressed genes(DEGs) and miRNAs (DEMs) in these two groups were identified...
November 15, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/29142597/microrna-193a-3p-inhibits-cell-proliferation-in-prostate-cancer-by-targeting-cyclin-d1
#15
Yunfu Liu, Xin Xu, Xianglai Xu, Shiqi Li, Zhen Liang, Zhenghui Hu, Jian Wu, Yi Zhu, Xiaodong Jin, Xiao Wang, Yiwei Lin, Hong Chen, Yeqing Mao, Jindan Luo, Xiangyi Zheng, Liping Xie
MicroRNAs (miRNAs) are small non-coding RNAs that affect various biological processes by altering the expression of a target gene. An miRNA microarray analysis has previously revealed a significant decrease in miR-193a-3p levels in prostate cancer tissues compared with that in their benign prostate hyperplasia counterparts. However, the role of miR-193a-3p has yet to be elucidated. In the present study, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used to evaluate the expression levels of miR-193a-3p in two human prostate cancer cell lines...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29142193/pten-is-a-protein-phosphatase-that-targets-active-ptk6-and-inhibits-ptk6-oncogenic-signaling-in-prostate-cancer
#16
Darren J Wozniak, Andre Kajdacsy-Balla, Virgilia Macias, Susan Ball-Kell, Morgan L Zenner, Wenjun Bie, Angela L Tyner
PTEN activity is often lost in prostate cancer. We show that the tyrosine kinase PTK6 (BRK) is a PTEN substrate. Phosphorylation of PTK6 tyrosine 342 (PY342) promotes activation, while phosphorylation of tyrosine 447 (PY447) regulates auto-inhibition. Introduction of PTEN into a PTEN null prostate cancer cell line leads to dephosphorylation of PY342 but not PY447 and PTK6 inhibition. Conversely, PTEN knockdown promotes PTK6 activation in PTEN positive cells. Using a variety of PTEN mutant constructs, we show that protein phosphatase activity of PTEN targets PTK6, with efficiency similar to PTP1B, a phosphatase that directly dephosphorylates PTK6 Y342...
November 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/29142177/perinatal-exposure-to-tetrabromobisphenol-a-tbbpa-a-brominated-flame-retardant-exacerbated-the-pneumonia-in-respiratory-syncytial-virus-rsv-infected-offspring-mice
#17
Wataru Watanabe, Akihiko Hirose, Tomomi Takeshita, Seiko Hashiguchi, Kentaro Sakata, Katsuhiko Konno, Aki Miyauchi, Toshi Akashi, Hiroki Yoshida, Chihiro Sugita, Masahiko Kurokawa
To investigate the effects of perinatal exposure to tetrabromobisphenol A (TBBPA), a brominated flame retardant, on the immune system, a respiratory syncytial virus (RSV) infection mouse model was utilized. Female mice were exposed to TBBPA mixed with the diet from 10 days after conception to weaning on postnatal day 21. Offspring mice were infected intranasally with A2 strain of RSV. Although no general toxicological sign was observed, the pulmonary viral titers of offspring mice exposed to 0.1% TBBPA were significantly increased compared with the control on day 5 post-infection...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/29141989/analysis-of-copy-number-variants-on-chromosome-21-in-down-syndrome-associated-congenital-heart-defects
#18
Benjamin L Rambo-Martin, Jennifer G Mulle, David J Cutler, Lora J H Bean, Tracie C Rosser, Kenneth J Dooley, Clifford Cua, George Capone, Cheryl L Maslen, Roger H Reeves, Stephanie L Sherman, Michael E Zwick
One in five people with Down syndrome (DS) are born with an atrioventricular septal defect (AVSD), an incidence 2,000 times higher than in the euploid population. The genetic loci that contribute to this risk are poorly understood. In this study, we tested two hypotheses: 1) individuals with DS carrying chromosome 21 copy number variants (CNVs) that interrupt exons may be protected from AVSD, because these CNVs return AVSD susceptibility loci back to disomy, and 2) individuals with DS carrying chromosome 21 genes spanned by microduplications are at greater risk for AVSD because these microduplications boost the dosage of AVSD susceptibility loci beyond a tolerable threshold...
November 15, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29141854/a-p53-deficiency-gene-signature-predicts-recurrence-risk-of-patients-with-early-stage-lung-adenocarcinoma
#19
Yanding Zhao, Frederick S Varn, Guoshuai Cai, Feifei Xiao, Christopher I Amos, Chao Cheng
BACKGROUND: Lung cancer is associated with the highest mortality rate of all cancer types, and the most common histological subtype of lung cancer is adenocarcinoma. In order to apply more effective therapeutic treatment, molecular markers that are able to predict the recurrence risk of patients with adenocarcinoma are critically needed. Mutations in TP53 tumor suppressor gene have been found in approximately 50% of lung adenocarcinoma cases, but the presence of a TP53 mutation does not always associate with increased mortality...
November 15, 2017: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29141788/interleukin-1-receptor-antagonist-and-2-5-oligoadenylate-synthetase-like-molecules-as-novel-biomarkers-for-multiple-sclerosis-patients-in-bahrain
#20
Moudi Al-Nashmi, Safa Taha, Isa Alsharoqi, Moiz Bakhiet
BACKGROUND: Multiple sclerosis (MS) is a multi-factorial disease of the Central Nervous System (CNS) affecting young adults leading to significant disabilities over time. MS is now believed to be prevalent in Arabian Gulf area with high incidence due to environmental factors and unknown genetic variations. The objectives of this study was to detect up-regulated potential genes that might be involved in neuroinflammatory process in MS patients in Bahrain and to measure the protein levels of the expressed genes...
November 2017: Multiple Sclerosis and related Disorders
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