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https://www.readbyqxmd.com/read/29343958/preparation-of-anastrozole-loaded-peg-pla-nanoparticles-evaluation-of-apoptotic-response-of-breast-cancer-cell-lines
#1
Yusra A Alyafee, Manal Alaamery, Shahad Bawazeer, Mansour S Almutairi, Badr Alghamdi, Nawaf Alomran, Atia Sheereen, Maha Daghestani, Salam Massadeh
Purpose: Anastrozole (ANS) is an aromatase inhibitor that is widely used as a treatment for breast cancer in postmenopausal women. Despite the wide use of ANS, it is associated with serious side effects due to uncontrolled delivery. In addition, ANS exhibits low solubility and short plasma half-life. Nanotechnology-based drug delivery has the potential to enhance the efficacy of drugs and overcome undesirable side effects. In this study, we aimed to prepare novel ANS-loaded PLA-PEG-PLA nanoparticles (ANS-NPs) and to compare the apoptotic response of MCF-7 cell line to both ANS and ANS-loaded NPs...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29339359/genetic-variants-in-immune-related-pathways-and-breast-cancer-risk-in-african-american-women-in-the-amber-consortium
#2
Chi-Chen Hong, Lara E Sucheston-Campbell, Song Liu, Qiang Hu, Song Yao, Kathryn L Lunetta, Stephen A Haddad, Edward A Ruiz-Narváez, Jeannette T Bensen, Ting-Yuan David Cheng, Elisa V Bandera, Lynn A Rosenberg, Christopher A Haiman, Kelvin P Lee, Sharon S Evans, Scott I Abrams, Elizabeth A Repasky, Andrew F Olshan, Julie R Palmer, Christine B Ambrosone
BACKGROUND: Constitutional immunity shaped by exposure to endemic infectious diseases and parasitic worms in Sub-Saharan Africa may play a role in the etiology of breast cancer among African American (AA) women. METHODS: A total of 13,235 gene variants in 433 genes across 45 immune pathways were analyzed in the AMBER consortium among 3,663 breast cancer cases and 4,687 controls. Gene-based pathway analyses were conducted using the adaptive rank truncated product statistic for overall breast cancer risk, and risk by estrogen receptor (ER) status...
January 16, 2018: Cancer Epidemiology, Biomarkers & Prevention
https://www.readbyqxmd.com/read/29332294/detection-of-mapk3-6-phosphorylation-during-hypersensitive-response-hr-associated-programmed-cell-death-in-plants
#3
Qingyu Wu, David Jackson
Programmed cell death (PCD) is an essential component of development, biotic and abiotic responses. Hypersensitive response (HR)-associated cell death activated under pathogen attack is one of the most dramatic manifestations of PCD in plants. Signal transduction through mitogen-activated protein kinase (MAPK) cascades, a very conserved signaling pathway across eukaryotes, is a core mediator for HR-associated PCD. Therefore, monitoring MAPK activation enables the mechanisms underlying HR-associated PCD to be elucidated...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29332228/comparative-evaluation-of-the-aqueous-humor-proteome-of-primary-angle-closure-and-primary-open-angle-glaucomas-and-age-related-cataract-eyes
#4
Inderjeet Kaur, Jasbir Kaur, K Sooraj, Sandeep Goswami, Rohit Saxena, Virander Singh Chauhan, Ramanjit Sihota
PURPOSE: To analyze and compare the total proteome of aqueous humor (AH) from patients having primary angle closure glaucoma (PACG), primary open angle glaucoma (POAG) and age-related cataract. MATERIALS AND METHODOLOGY: Aqueous humor was collected from age-matched PACG, POAG and cataract patients who underwent surgery, and it was immediately stored at - 80 °C until analysis. From each sample, 25 µg of total protein was subjected to trypsin digestion and subsequently LC-MS/MS analysis was performed for the deep proteome analysis...
January 13, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29331044/journey-of-oocyte-from-metaphase-i-to-metaphase-ii-stage-in-mammals
#5
Alka Sharma, Meenakshi Tiwari, Anumegha Gupta, Ashutosh N Pandey, Pramod K Yadav, Shail K Chaube
In mammals, journey from metaphase-I (M-I) to metaphase-II (M-II) is important since oocyte extrude first polar body (PB-I) and gets converted into haploid gamete. The molecular and cellular changes associated with meiotic cell cycle progression from M-I to M-II stage and extrusion of PB-I remain ill understood. Several factors drive oocyte meiosis from M-I to M-II stage. The mitogen-activated protein kinase3/1 (MAPK3/1), signal molecules and Rho family GTPases act through various pathways to drive cell cycle progression from M-I to M-II stage...
January 13, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29326975/identifying-the-substrate-proteins-of-u-box-e3s-e4b-and-chip-by-orthogonal-ubiquitin-transfer
#6
Karan Bhuripanyo, Yiyang Wang, Xianpeng Liu, Li Zhou, Ruochuan Liu, Duc Duong, Bo Zhao, Yingtao Bi, Han Zhou, Geng Chen, Nicholas T Seyfried, Walter J Chazin, Hiroaki Kiyokawa, Jun Yin
E3 ubiquitin (UB) ligases E4B and carboxyl terminus of Hsc70-interacting protein (CHIP) use a common U-box motif to transfer UB from E1 and E2 enzymes to their substrate proteins and regulate diverse cellular processes. To profile their ubiquitination targets in the cell, we used phage display to engineer E2-E4B and E2-CHIP pairs that were free of cross-reactivity with the native UB transfer cascades. We then used the engineered E2-E3 pairs to construct "orthogonal UB transfer (OUT)" cascades so that a mutant UB (xUB) could be exclusively used by the engineered E4B or CHIP to label their substrate proteins...
January 2018: Science Advances
https://www.readbyqxmd.com/read/29315347/long-term-ethanol-exposure-temporal-pattern-of-microrna-expression-and-associated-mrna-gene-networks-in-mouse-brain
#7
Elizabeth A Osterndorff-Kahanek, Gayatri R Tiwari, Marcelo F Lopez, Howard C Becker, R Adron Harris, R Dayne Mayfield
Long-term alcohol use can result in lasting changes in brain function, ultimately leading to alcohol dependence. These functional alterations arise from dysregulation of complex gene networks, and growing evidence implicates microRNAs as key regulators of these networks. We examined time- and brain region-dependent changes in microRNA expression after chronic intermittent ethanol (CIE) exposure in C57BL/6J mice. Animals were sacrificed at 0, 8, and 120h following the last exposure to four weekly cycles of CIE vapor and we measured microRNA expression in prefrontal cortex (PFC), nucleus accumbens (NAC), and amygdala (AMY)...
2018: PloS One
https://www.readbyqxmd.com/read/29313809/parp1-facilitates-ep300-recruitment-to-the-promoters-of-the-subset-of-rbl2-dependent-genes
#8
Agnieszka Robaszkiewicz, Ewelina Wiśnik, Zsolt Regdon, Kinga Chmielewska, László Virág
Differentiation of human monocytes is associated with proliferation arrest resulting from activation of the inter alia retinoblastoma protein family of gene repressors, which target gene promoters in an E2F-dependent manner. To investigate RBL2 contribution to defining monocyte phenotype and function, we used primer libraries. We identified genes encoding two surface receptors (CXCR1 and IL17RE) and two TLR signaling mediators (CD86 and NFKB2) that are repressed by the RBL2-E2F4-HDAC1-BRM complex. Surprisingly, PARP1 co-regulated 24 out of the 28 identified genes controlled by RBL2...
December 4, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29282071/analysis-of-the-main-active-ingredients-and-bioactivities-of-essential-oil-from-osmanthus-fragrans-var-thunbergii-using-a-complex-network-approach
#9
Le Wang, Nana Tan, Jiayao Hu, Huan Wang, Dongzhu Duan, Lin Ma, Jian Xiao, Xiaoling Wang
BACKGROUND: Osmanthus fragrans has been used as folk medicine for thousands of years. The extracts of Osmanthus fragrans flowers were reported to have various bioactivities including free radical scavenging, anti-inflammation, neuroprotection and antitumor effects. However, there is still lack of knowledge about its essential oil. METHODS: In this work, we analyzed the chemical composition of the essential oil from Osmanthus fragrans var. thunbergii by GC-MS. A complex network approach was applied to investigate the interrelationships between the ingredients, target proteins, and related pathways for the essential oil...
December 28, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/29229010/relative-importance-of-phosphatidylinositol-3-kinase-pi3k-akt-and-mitogen-activated-protein-kinase-mapk3-1-signaling-during-maturational-steroid-induced-meiotic-g2-m1-transition-in-zebrafish-oocytes
#10
Debabrata Das, Poulomi Nath, Soumojit Pal, Sudip Hajra, Pritha Ghosh, Sudipta Maitra
Participation and relative importance of phosphatidylinositol-3 kinase (PI3K) and mitogen-activated protein kinase (MAPK) signalling, either alone or in combination, have been investigated during 17α,20β-dihydroxy-4-pregnen-3-one (DHP)-induced meiotic G2-M1 transition in denuded zebrafish oocyte. Results demonstrate that concomitant with rapid phosphorylation (activation) of Akt (Ser473) and MAPK (ERK1/2) at as early as 15 min of incubation, DHP stimulation promotes enhanced an GVBD response and histone H1 kinase activation between 1 and 5 h in full-grown oocytes in vitro...
December 12, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/29207054/use-of-methylation-profiling-to-identify-significant-differentially-methylated-genes-in-bone-marrow-mesenchymal-stromal-cells-from-acute-myeloid-leukemia
#11
Jing Huang, Zhi Liu, Yufan Sun, Qi Zhong, Li Xu, Ruimin Ou, Cheng Li, Rui Chen, Mengdong Yao, Qing Zhang, Shuang Liu
The present study aimed to characterize the epigenetic architecture by studying the DNA methylation signature in bone marrow mesenchymal stem cells (BM‑MSCs) from patients with acute myeloid leukemia (AML). Microarray dataset GSE79695 was downloaded from the Gene Expression Omnibus database. Differentially methylated sites and differentially methylated CpG islands were identified in BM‑MSC samples from patients with AML compared with controls. MicroRNAs (miRs) encoding genes covering differentially methylated sites were found and the regulation network was constructed...
November 17, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29154080/changes-in-gene-expression-in-small-bowel-neuroendocrine-tumors-associated-with-progression-to-metastases
#12
Kendall J Keck, Patrick Breheny, Terry A Braun, Benjamin Darbro, Guiying Li, Joseph S Dillon, Andrew M Bellizzi, Thomas M O'Dorisio, James R Howe
BACKGROUND: Small bowel neuroendocrine tumors (SBNETs) present frequently with metastases, yet little is known about the molecular basis of this progression. This study sought to identify the serial differential expression of genes between normal small bowel, primary small bowel neuroendocrine tumors, and liver metastases. METHODS: RNA isolated from matched normal small bowel tissue, primary small bowel neuroendocrine tumors, and liver metastases in 12 patients was analyzed with whole transcriptome expression microarrays and RNA-Seq...
November 16, 2017: Surgery
https://www.readbyqxmd.com/read/29071030/diabetic-retinopathy-and-laser-therapy-in-rats-a-protein-protein-interaction-network-analysis
#13
Akram Safaei, Mostafa Rezaei Tavirani, Mona Zamanian Azodi, Alireza Lashay, Seyed Farzad Mohammadi, Mohamad Ghasemi Broumand, Ali Asghar Peyvandi, Farshad Okhovatian, Hassan Peyvandi, Mohammad Rostami Nejad
Introduction: Diabetic retinopathy (DR) is a serious microvascular complication of diabetes which can cause vision loss or blindness ultimately. Non enzymatic glycation of proteins leads to advanced glycation end products (AGEs) in DR. Since laser therapy is a well-established method, in this study, protein-protein interaction (PPI) network is applied for protein targets in DR disease in rats treated by laser. Methods: In this study, we focused on articles that investigated and compared the proteome profiles of DR rats with healthy control and also DR rats before and after laser therapy...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29049217/identification-of-novel-therapeutic-target-genes-and-pathway-in-pancreatic-cancer-by-integrative-analysis
#14
Bangli Hu, Cheng Shi, Hai-Xing Jiang, Shan-Yu Qin
BACKGROUND: Gene alterations are crucial to the molecular pathogenesis of pancreatic cancer. The present study was designed to identify the potential candidate genes in the pancreatic carcinogenesis. METHODS: Gene Expression Omnibus database (GEO) datasets of pancreatic cancer tissue were retrieval and the differentially expressed genes (DEGs) from individual microarray data were merged. Gene Ontology (GO) enrichment analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, protein-protein interaction (PPI) networks, and gene coexpression analysis were performed...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29045588/the-mycotoxin-metabolite-deepoxy-deoxynivalenol-increases-apoptosis-and-decreases-steroidogenesis-in-bovine-ovarian-theca-cells
#15
Hilda M Guerrero-Netro, Anthony Estienne, Younès Chorfi, Christopher A Price
The mycotoxin deoxynivalenol (DON) has been shown to inhibit ovarian granulosa cell function in cattle in vitro, but it is not known whether DON or its metabolite deepoxy-DON (DOM-1) affect theca cell function. The objectives of the present study were to determine the effects of DON and of DOM-1 on theca cell steroidogenesis and apoptosis, and to determine the main pathways through which they act. Bovine theca cells were cultured in a non-luteinizing serum-free culture system, and challenged with DON or DOM-1 for 4 d to measure steroidogenesis and apoptosis, for 1-8 h to measure immediate-early genes, and for 5-60 min to measure phosphorylation of intracellular signaling proteins...
October 13, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29038245/mitochondrial-calcium-dysregulation-contributes-to-dendrite-degeneration-mediated-by-pd-lbd-associated-lrrk2-mutants
#16
Manish Verma, Jason Callio, P Anthony Otero, Israel Sekler, Zachary P Wills, Charleen T Chu
Mutations in leucine-rich repeat kinase 2 (LRRK2) contribute to development of late-onset familial Parkinson's disease (PD), with clinical features of motor and cognitive dysfunction indistinguishable from sporadic PD. Calcium dysregulation plays an important role in PD pathogenesis, but the mechanisms of neurodegeneration remain unclear. Recent reports indicate enhanced excitatory neurotransmission in cortical neurons expressing mutant LRRK2, which occurs prior to the well-characterized phenotype of dendritic shortening...
October 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29037916/pfaffia-paniculata-brazilian-ginseng-extract-modulates-mapk-and-mucin-pathways-in-intestinal-inflammation
#17
C A R A Costa, A E V Quaglio, L C Di Stasi
ETHNOPHARMACOLOGICAL RELEVANCE: Pfaffia paniculata is an endemic Brazilian plant traditionally used against fatigue, stress, inflammation and low immune system as well as with proven intestinal anti-inflammatory activity. AIM OF THE STUDY: To evaluate intestinal anti-inflammatory effects of P. paniculata on the mRNA abundance of Hsp70, Heparanase, Mapk1, Mapk3, Mapk6, Mapk9, Muc1, Muc2, Muc3, Muc4, and NF-κB, as well as the mucin content in colonic samples. MATERIAL AND METHODS: Intestinal inflammation was induced by TNBS and rats were divided into groups that received vehicle or 25, 50, 100, or 200mg/kg of P...
October 14, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29024947/human-trophoblast-derived-hydrogen-sulfide-stimulates-placental-artery-endothelial-cell-angiogenesis
#18
Dong-Bao Chen, Lin Feng, Jennifer K Hodges, Thomas J Lechuga, Honghai Zhang
Endogenous hydrogen sulfide (H2S), mainly synthesized by cystathionine β-synthase (CBS) and cystathionine γ-lyase (CTH), has been implicated in regulating placental angiogenesis; however, the underlying mechanisms are unknown. This study was to test a hypothesis that trophoblasts synthesize H2S to promote placental angiogenesis. Human choriocarcinoma-derived BeWo cells expressed both CBS and CTH proteins, while the first trimester villous trophoblast-originated HTR-8/SVneo cells expressed CTH protein only...
September 1, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28965845/the-immune-signaling-adaptor-lat-contributes-to-the-neuroanatomical-phenotype-of-16p11-2-bp2-bp3-cnvs
#19
Maria Nicla Loviglio, Thomas Arbogast, Aia Elise Jønch, Stephan C Collins, Konstantin Popadin, Camille S Bonnet, Giuliana Giannuzzi, Anne M Maillard, Sébastien Jacquemont, Binnaz Yalcin, Nicholas Katsanis, Christelle Golzio, Alexandre Reymond
Copy-number changes in 16p11.2 contribute significantly to neuropsychiatric traits. Besides the 600 kb BP4-BP5 CNV found in 0.5%-1% of individuals with autism spectrum disorders and schizophrenia and whose rearrangement causes reciprocal defects in head size and body weight, a second distal 220 kb BP2-BP3 CNV is likewise a potent driver of neuropsychiatric, anatomical, and metabolic pathologies. These two CNVs are engaged in complex reciprocal chromatin looping, intimating a functional relationship between genes in these regions that might be relevant to pathomechanism...
October 5, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/28939879/differential-expression-and-co-expression-gene-networks-reveal-candidate-biomarkers-of-boar-taint-in-non-castrated-pigs
#20
Markus Drag, Ruta Skinkyté-Juskiené, Duy N Do, Lisette J A Kogelman, Haja N Kadarmideen
Boar taint (BT) is an offensive odour or taste observed in pork from a proportion of non-castrated male pigs. Surgical castration is effective in avoiding BT, but animal welfare issues have created an incentive for alternatives such as genomic selection. In order to find candidate biomarkers, gene expression profiles were analysed from tissues of non-castrated pigs grouped by their genetic merit of BT. Differential expression analysis revealed substantial changes with log-transformed fold changes of liver and testis from -3...
September 22, 2017: Scientific Reports
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