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https://www.readbyqxmd.com/read/28096467/mir-21-mediated-radioresistance-is-via-promoting-repair-of-dna-double-strand-breaks
#1
Baocheng Hu, Xiang Wang, Suofeng Hu, Xiaomin Ying, Ping Wang, Xiangming Zhang, Jian Wang, Hongyan Wang, Ya Wang
MiR-21 as an oncogene that over-expresses in most human tumors involves radioresistance; however, the mechanism remains unclear. Here, we demonstrate that miR-21-mediated radioresistance is through promoting repair of DNA double strand breaks, which includes to facilitate both non-homologous end-joining (NHEJ) and homologous recombination repair (HRR). The miR-21-promoted NHEJ is through targeting GSK3B (a novel target of miR-21) that affects the CRY2/PP5 pathway and in turn increases DNA-PKcs activity. The miR-21-promoted HRR is through targeting both GSK3B and CDC25A (a known target of miR-21), which neutralizes the effects of targeting GSK3B-induced CDC25A increase since GSK3B promotes degradation of both CDC25A and Cyclin D1, but CDC25A and Cyclin D1 have an opposite effect on HRR...
January 17, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28056994/hexokinase-2-drives-glycogen-accumulation-in-equine-endometrium-at-day-12-of-diestrus-and-pregnancy
#2
Sarah A Bramer, Alysson Macedo, Claudia Klein
BACKGROUND: Secretion of histotroph during the prolonged pre-implantation phase in mares is crucial to pregnancy maintenance, manifested as increased embryonic loss in mares with age-related endometrial degeneration. Glycogen content of uterine histotroph is higher during the progesterone-dominated phase of the estrous cycle in mares, but regulatory mechanisms are not well understood. METHODS: mRNA expression of glycogen-metabolizing enzymes (HK1, HK2, GSK3B, GYS1, PEPCK, PKM, PYGM) in endometrial samples were compared among mares in anestrus, estrus, and at Day 12 of diestrus and pregnancy...
January 5, 2017: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/28053206/gsk3b-mediated-phosphorylation-of-mcl1-regulates-axonal-autophagy-to-promote-wallerian-degeneration
#3
Shuji Wakatsuki, Shinji Tokunaga, Megumi Shibata, Toshiyuki Araki
Macroautophagy is a catabolic process, in which portions of cytoplasm or organelles are delivered to lysosomes for degradation. Emerging evidence has indicated a pathological connection between axonal degeneration and autophagy. However, the physiological function and induction mechanism of autophagy in axons remain elusive. We herein show that, through activation of BECLIN1, glycogen synthase kinase 3B (GSK3B)-mediated phosphorylation of BCL2 family member MCL1 induces axonal autophagy and axonal degeneration...
January 4, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/27997540/il-7-receptor-mutations-and-steroid-resistance-in-pediatric-t-cell-acute-lymphoblastic-leukemia-a-genome-sequencing-study
#4
Yunlei Li, Jessica G C A M Buijs-Gladdines, Kirsten Canté-Barrett, Andrew P Stubbs, Eric M Vroegindeweij, Willem K Smits, Ronald van Marion, Winand N M Dinjens, Martin Horstmann, Roland P Kuiper, Rogier C Buijsman, Guido J R Zaman, Peter J van der Spek, Rob Pieters, Jules P P Meijerink
BACKGROUND: Pediatric acute lymphoblastic leukemia (ALL) is the most common childhood cancer and the leading cause of cancer-related mortality in children. T cell ALL (T-ALL) represents about 15% of pediatric ALL cases and is considered a high-risk disease. T-ALL is often associated with resistance to treatment, including steroids, which are currently the cornerstone for treating ALL; moreover, initial steroid response strongly predicts survival and cure. However, the cellular mechanisms underlying steroid resistance in T-ALL patients are poorly understood...
December 2016: PLoS Medicine
https://www.readbyqxmd.com/read/27983596/estrogenic-endocrine-disrupting-chemicals-influencing-nrf1-regulated-gene-networks-in-the-development-of-complex-human-brain-diseases
#5
REVIEW
Mark Preciados, Changwon Yoo, Deodutta Roy
During the development of an individual from a single cell to prenatal stages to adolescence to adulthood and through the complete life span, humans are exposed to countless environmental and stochastic factors, including estrogenic endocrine disrupting chemicals. Brain cells and neural circuits are likely to be influenced by estrogenic endocrine disruptors (EEDs) because they strongly dependent on estrogens. In this review, we discuss both environmental, epidemiological, and experimental evidence on brain health with exposure to oral contraceptives, hormonal therapy, and EEDs such as bisphenol-A (BPA), polychlorinated biphenyls (PCBs), phthalates, and metalloestrogens, such as, arsenic, cadmium, and manganese...
December 13, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27978877/-detection-and-screen-of-pulmonary-metastasis-related-signature-genes-in-nasopharyngeal-carcinoma
#6
C Xu, H W Xiao, L H Zhang, P Wu, Y Fang, D W Li, W F Li, Z S Liao
Objective: To establish an animal model of pulmonary metastasis from nasopharyngeal carcinoma (NPC) and to investigate differential genes associated with pulmonary metastasis. Methods: CNE cell line was used to construct the stable metastasis CNE/Luc cell line which steadily expresses the fluorescent enzyme genes. The CNE/Luc cells were injected into immunodeficiency mice through tail vein, and with the in vivo imaging technology, the mice with pulmonary metastasis were filtered out. The pulmonary metastasis cells, were separated and injected into the tail vein of other nude mice to obtain the tissue-specificity metastasis cells confirmed by fluorescent imaging system...
December 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/27922623/molecular-mechanisms-underlying-the-positive-role-of-treadmill-training-in-locomotor-recovery-after-spinal-cord-injury
#7
Q Liu, B Zhang, C Liu, D Zhao
OBJECTIVES: This study aimed to investigate the molecular mechanisms underlying the positive role of treadmill training (TMT) in locomotor recovery. METHODS: GSE52763 microarray data were downloaded from GEO database, which was collected from the lumbar spinal cord samples of three groups of mice: mice subjected to contusive injury and killed 1 week after injury (I1), mice subjected to injury and killed 3 weeks after injury (I3), and mice subjected to injury and TMT beginning at week 1 and lasting until week 3 (T3)...
December 6, 2016: Spinal Cord
https://www.readbyqxmd.com/read/27853238/assessment-of-brain-reference-genes-for-rt-qpcr-studies-in-neurodegenerative-diseases
#8
Rasmus Rydbirk, Jonas Folke, Kristian Winge, Susana Aznar, Bente Pakkenberg, Tomasz Brudek
Evaluation of gene expression levels by reverse transcription quantitative real-time PCR (RT-qPCR) has for many years been the favourite approach for discovering disease-associated alterations. Normalization of results to stably expressed reference genes (RGs) is pivotal to obtain reliable results. This is especially important in relation to neurodegenerative diseases where disease-related structural changes may affect the most commonly used RGs. We analysed 15 candidate RGs in 98 brain samples from two brain regions from Alzheimer's disease (AD), Parkinson's disease (PD), Multiple System Atrophy, and Progressive Supranuclear Palsy patients...
November 17, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27772752/role-of-neurodevelopment-involved-genes-in-psychiatric-comorbidities-and-modulation-of-inflammatory-processes-in-alzheimer-s-disease
#9
Porcelli Stefano, Crisafulli Concetta, Donato Luigi, Calabrò Marco, Politis Antonis, Liappas Ioannis, Albani Diego, Atti Anna Rita, Salfi Raffaele, Raimondi Ilaria, Forloni Gianluigi, Papadimitriou George N, De Ronchi Diana, Serretti Alessandro
INTRODUCTION: With the increase of the population's average age, Alzheimer's disease (AD) is becoming one of the most disabling diseases worldwide. Recently, neurodevelopment processes have been involved in the AD etiopathogenesis. Genetic studies in this field could contribute to our knowledge and suggest new molecular targets for possible treatments. METHODS: Our primary aim was to investigate the associations among single nucleotide polymorphisms (SNPs) within neurodevelopment related genes (BDNF, ST8SIA2, C15orf32, NCAPG2, ESYT2, WDR60, LOC154822, VIPR2, GSK3B, NR1I2, ZNF804A, SP4) and AD...
November 15, 2016: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/27765105/-analysis-of-microrna-regulatory-network-in-cochlear-hair-cells-with-oxidative-stress-injury
#10
J Y Wang, Y Xia, C C Yang, Z Wang
Objective: To analysis the important genes and functions of cochlear hair cells with oxidative stress injury, by the construction of gene regulatory network which based on different miRNA in cochlear hair cells in vitro with oxidative stress injury, and to explore the molecular mechanisms of deafness based on oxidative stress injury. Method: The oxidative stress damage cochlear hair cell model was induced by 200 μmol/L t-BHP exposure in vitro. Small RNA deep sequencing analyzed the difference expression of miRNA and contructed gene regulatory network by 6 most significant difference miRNA...
October 7, 2016: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/27559607/protein-interaction-network-of-human-protein-kinase-d2-revealed-by-chemical-cross-linking-mass-spectrometry
#11
Björn Häupl, Christian H Ihling, Andrea Sinz
We investigated the interaction network of human PKD2 in the cytosol and in Golgi-enriched subcellular protein fractions by an affinity enrichment strategy combined with chemical cross-linking/mass spectrometry (MS). Analysis of the subproteomes revealed the presence of distinct proteins in the cytosolic and Golgi fractions. The covalent fixation of transient or weak interactors by chemical cross-linking allowed capturing interaction partners that might otherwise disappear during conventional pull-down experiments...
October 7, 2016: Journal of Proteome Research
https://www.readbyqxmd.com/read/27530212/de-regulation-of-diabetic-regulatory-genes-in-psoriasis-deciphering-the-unsolved-riddle
#12
Suad AlFadhli, Alaa A M Al-Zufairi, Rasheeba Nizam, Huda A AlSaffar, Nawaf Al-Mutairi
The purpose of our study was to identify the currently lacking molecular mechanism that accounts for the co-occurrence of two seemingly disparate diseases: psoriasis and type II diabetes. We aimed to investigate a panel of 84 genes related to the diabetic regulatory network in psoriasis (Ps), psoriasis type II diabetes (Ps-T2D), type II diabetes (T2D) and healthy control (HC). We hypothesize that such attempts would provide novel diagnostic markers and/or insights into pathogenesis of the disease. A quantitative Real Time-PCR Human Diabetes RT(2) Profiler PCR Array was chosen to explore the expression profile 84 diabetic genes in study subjects...
November 15, 2016: Gene
https://www.readbyqxmd.com/read/27484226/gtpbp2-is-a-positive-regulator-of-wnt-signaling-and-maintains-low-levels-of-the-wnt-negative-regulator-axin
#13
William Q Gillis, Arif Kirmizitas, Yasuno Iwasaki, Dong-Hyuk Ki, Jonathan M Wyrick, Gerald H Thomsen
BACKGROUND: Canonical Wnt signals, transduced by stabilized β-catenin, play similar roles across animals in maintaining stem cell pluripotency, regulating cell differentiation, and instructing normal embryonic development. Dysregulated Wnt/β-catenin signaling causes diseases and birth defects, and a variety of regulatory processes control this pathway to ensure its proper function and integration with other signaling systems. We previously identified GTP-binding protein 2 (Gtpbp2) as a novel regulator of BMP signaling, however further exploration revealed that Gtpbp2 can also affect Wnt signaling, which is a novel finding reported here...
2016: Cell Communication and Signaling: CCS
https://www.readbyqxmd.com/read/27470346/mir-769-promoted-cell-proliferation-in-human-melanoma-by-suppressing-gsk3b-expression
#14
Hai-Jiang Qiu, Xiao-He Lu, Sha-Sha Yang, Chen-Yin Weng, E-Keng Zhang, Fang-Chao Chen
MicroRNAs (miRNAs) are short, non-coding RNAs with post-transcriptional regulatory function, playing crucial roles in cancer development and progression of human melanoma. Previous studies have indicated that miR-769 was implicated in diverse biological processes. However, the underlying mechanism of miR-769 in human melanoma has not been intensively investigated. In this present study, we aimed to investigate the role of miR-769 and its target genes in human melanoma. We found that miR-769 expression was strongly increased in human melanoma cells and clinical tissues compared with their corresponding controls...
August 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27458792/donor-graft-micrornas-a-newly-identified-player-in-the-development-of-new-onset-diabetes-after-liver-transplantation
#15
Q Ling, H Xie, J Li, J Liu, J Cao, F Yang, C Wang, Q Hu, X Xu, S Zheng
New-onset diabetes after liver transplantation (NODALT) is a frequent complication with an unfavorable outcome. We previously demonstrated a crucial link between donor graft genetics and the risk of NODALT. We selected 15 matched pairs of NODALT and non-NODALT liver recipients using propensity score matching analysis. The donor liver tissues were tested for the expression of 10 microRNAs (miRNAs) regulating human hepatic glucose homeostasis. The biological functions of potential target genes were predicted using gene ontology and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis...
January 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/27308616/atg2b-and-gskip-2-new-genes-predisposing-to-myeloid-malignancies
#16
Isabelle Plo, Christine Bellanné-Chantelot, William Vainchenker
We have recently identified a 700-kb tandem duplication at locus 14q32.13-q32.2 involving 2 genes, autophagy-related protein 2 homolog B (ATG2B) and GSK3B interacting protein (GSKIP), that increases the predisposition to myeloid malignancies. Here, we discuss the clinical relevance of these findings.
March 2016: Molecular & Cellular Oncology
https://www.readbyqxmd.com/read/27243824/computational-identification-of-novel-stage-specific-biomarkers-in-colorectal-cancer-progression
#17
Ashok Palaniappan, Karthick Ramar, Satish Ramalingam
It is well-known that the conversion of normal colon epithelium to adenoma and then to carcinoma stems from acquired molecular changes in the genome. The genetic basis of colorectal cancer has been elucidated to a certain extent, and much remains to be known about the identity of specific cancer genes that are associated with the advancement of colorectal cancer from one stage to the next. Here in this study we attempted to identify novel cancer genes that could underlie the stage-specific progression and metastasis of colorectal cancer...
2016: PloS One
https://www.readbyqxmd.com/read/27218273/wnt-signaling-genes-in-adipose-tissue-and-skeletal-muscle-of-humans-with-different-degrees-of-insulin-sensitivity
#18
Monika Karczewska-Kupczewska, Magdalena Stefanowicz, Natalia Matulewicz, Agnieszka Nikołajuk, Marek Strączkowski
CONTEXT: The β-catenin-dependent Wnt signaling plays a role in adipogenesis, myogenesis, and glucose homeostasis. OBJECTIVE: The aim of this study was to assess adipose tissue and skeletal muscle expression of Wnt/β-catenin signaling genes in a young healthy population according to insulin sensitivity and its regulation by hyperinsulinemia and free fatty acids. DESIGN: We examined 117 male volunteers. The participants were divided into subgroups of high-insulin sensitivity (IS) and low-IS on the basis of a 2-hour euglycemic clamp...
August 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27188753/identifying-micrornas-targeting-wnt-%C3%AE-catenin-pathway-in-end-stage-idiopathic-pulmonary-arterial-hypertension
#19
Danchen Wu, C Conover Talbot, Qun Liu, Zhi-Cheng Jing, Rachel L Damico, Rubin Tuder, Kathleen C Barnes, Paul M Hassoun, Li Gao
UNLABELLED: MicroRNAs (miRNAs) play important roles in the pathogenesis of pulmonary arterial hypertension (PAH). However, the pathways targeted by miRNAs in PAH have not been systematically investigated. We aim to identify dysregulated miRNAs for patients with idiopathic PAH (IPAH). miRNA profiling was performed on lung tissue total RNA from eight IPAH patients and eight control subjects. Real-time quantitative RT-PCR (qRT-PCR) was used for validation of miRNA and mRNA expression levels in 14 IPAH patients and 14 control subjects...
August 2016: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/27160071/uv-induced-foot-duplication-in-regenerating-hydra-is-mediated-by-metalloproteinases-and-modulation-of-the-wnt-pathway
#20
Lakshmi-Surekha Krishnapati, Rohini Londhe, Vaishali Deoli, Apurva Barve, Saroj Ghaskadbi, Surendra Ghaskadbi
We have shown earlier that irradiation with UV induces duplication of foot in regenerating middle pieces of hydra. The present study was undertaken to elucidate the underlying mechanism(s) leading to this curious phenomenon. UV irradiation induced duplicated foot in about 30% of regenerating middle pieces. Metalloproteinases are important in foot formation, while Wnt pathway genes are important in head formation in hydra. The effect of UV irradiation on expression of these genes was studied by in situ hybridization and q-PCR...
2016: International Journal of Developmental Biology
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