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https://www.readbyqxmd.com/read/28805231/the-histone-methyltransferase-mixed-lineage-leukemia-mll-3-may-play-a-potential-role-on-clinical-dilated-cardiomyopathy
#1
Ding-Sheng Jiang, Xin Yi, Rui Li, Yun-Shu Su, Jing Wang, Min-Lai Chen, Li-Gang Liu, Min Hu, Cai Cheng, Ping Zheng, Xue-Hai Zhu, Xiang Wei
Histone modifications play a critical role in the pathological processes of dilated cardiomyopathy (DCM). While the role and expression pattern of histone methyltransferases (HMTs), especially mixed lineage leukemia (MLL) families on DCM are unclear. To this end, twelve normal and fifteen DCM heart samples were included in the present study. A murine cardiac remodelling model was induced by transverse aortic constriction (TAC). Real-time PCR was performed to detect the expression levels of MLL families in the mouse and human left ventricles...
August 9, 2017: Molecular Medicine
https://www.readbyqxmd.com/read/28803237/atf3-dependent-regulation-of-egr1-in-vitro-and-in-vivo
#2
Ilona Schoen, Sabine Koitzsch
BACKGROUND/AIMS: Activating transcription factor 3 (ATF3) and early growth response protein 1 (EGR1) are reported to interact, but their use as prognostic factors in cancer is discussed controversially. METHODS: We measured ATF3 and EGR1 gene expression changes in human mini-organ cultures (MOCs) of healthy nasal epithelia, UM-SCC-22B, and FADUDD cells after acid reflux exposure. Next, ATF3 and EGR1 gene expression was analysed in tumour tissues and related to the median expression of autologous reference tissue samples...
August 12, 2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/28799539/srsf1-promotes-vascular-smooth-muscle-cell-proliferation-through-a-%C3%AE-133p53-egr1-klf5-pathway
#3
Ning Xie, Min Chen, Rilei Dai, Yan Zhang, Hanqing Zhao, Zhiming Song, Lufeng Zhang, Zhenyan Li, Yuanqing Feng, Hua Gao, Li Wang, Ting Zhang, Rui-Ping Xiao, Jianxin Wu, Chun-Mei Cao
Though vascular smooth muscle cell (VSMC) proliferation underlies all cardiovascular hyperplastic disorders, our understanding of the molecular mechanisms responsible for this cellular process is still incomplete. Here we report that SRSF1 (serine/arginine-rich splicing factor 1), an essential splicing factor, promotes VSMC proliferation and injury-induced neointima formation. Vascular injury in vivo and proliferative stimuli in vitro stimulate SRSF1 expression. Mice lacking SRSF1 specifically in SMCs develop less intimal thickening after wire injury...
August 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/28771625/inhibition-of-dipeptidyl-peptidase-4-ameliorates-cardiac-ischemia-and-systolic-dysfunction-by-up-regulating-the-fgf-2-egr-1-pathway
#4
Masayoshi Suda, Ippei Shimizu, Yohko Yoshida, Yuka Hayashi, Ryutaro Ikegami, Goro Katsuumi, Takayuki Wakasugi, Yutaka Yoshida, Shujiro Okuda, Tomoyoshi Soga, Tohru Minamino
Dipeptidyl peptidase 4 inhibitors are used worldwide in the management of diabetes, but their role in the prevention or treatment of cardiovascular disorders has yet to be defined. We found that linagliptin, a DPP-4 inhibitor, suppressed capillary rarefaction in the hearts of mice with dietary obesity. Metabolomic analysis performed with capillary electrophoresis/mass spectrometry (LC-MS/MS) showed that linagliptin promoted favorable metabolic remodeling in cardiac tissue, which was characterized by high levels of citrulline and creatine...
2017: PloS One
https://www.readbyqxmd.com/read/28763805/%C3%AE-1-integrin-deletion-from-the-lens-activates-cellular-stress-responses-leading-to-apoptosis-and-fibrosis
#5
Yichen Wang, Anne M Terrell, Brittany A Riggio, Deepti Anand, Salil A Lachke, Melinda K Duncan
Purpose: Previous research showed that the absence of β1-integrin from the mouse lens after embryonic day (E) 13.5 (β1MLR10) leads to the perinatal apoptosis of lens epithelial cells (LECs) resulting in severe microphthalmia. This study focuses on elucidating the molecular connections between β1-integrin deletion and this phenotype. Methods: RNA sequencing was performed to identify differentially regulated genes (DRGs) in β1MLR10 lenses at E15.5. By using bioinformatics analysis and literature searching, Egr1 (early growth response 1) was selected for further study...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28758926/emt-met-at-the-crossroad-of-stemness-regeneration-and-oncogenesis-the-ying-yang-equilibrium-recapitulated-in-cell-spheroids
#6
REVIEW
Elvira Forte, Isotta Chimenti, Paolo Rosa, Francesco Angelini, Francesca Pagano, Antonella Calogero, Alessandro Giacomello, Elisa Messina
The epithelial-to-mesenchymal transition (EMT) is an essential trans-differentiation process, which plays a critical role in embryonic development, wound healing, tissue regeneration, organ fibrosis, and cancer progression. It is the fundamental mechanism by which epithelial cells lose many of their characteristics while acquiring features typical of mesenchymal cells, such as migratory capacity and invasiveness. Depending on the contest, EMT is complemented and balanced by the reverse process, the mesenchymal-to-epithelial transition (MET)...
July 29, 2017: Cancers
https://www.readbyqxmd.com/read/28754123/post-mortem-molecular-profiling-of-three-psychiatric-disorders
#7
Ryne C Ramaker, Kevin M Bowling, Brittany N Lasseigne, Megan H Hagenauer, Andrew A Hardigan, Nicholas S Davis, Jason Gertz, Preston M Cartagena, David M Walsh, Marquis P Vawter, Edward G Jones, Alan F Schatzberg, Jack D Barchas, Stanley J Watson, Blynn G Bunney, Huda Akil, William E Bunney, Jun Z Li, Sara J Cooper, Richard M Myers
BACKGROUND: Psychiatric disorders are multigenic diseases with complex etiology that contribute significantly to human morbidity and mortality. Although clinically distinct, several disorders share many symptoms, suggesting common underlying molecular changes exist that may implicate important regulators of pathogenesis and provide new therapeutic targets. METHODS: We performed RNA sequencing on tissue from the anterior cingulate cortex, dorsolateral prefrontal cortex, and nucleus accumbens from three groups of 24 patients each diagnosed with schizophrenia, bipolar disorder, or major depressive disorder, and from 24 control subjects...
July 28, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28744016/anti-inflammatory-and-chondroprotective-effects-of-the-s-adenosylhomocysteine-hydrolase-inhibitor-3-deazaneplanocin-a-in-human-articular-chondrocytes
#8
Juliette Aury-Landas, Céline Bazille, Lyess Allas, Sara Bouhout, Christophe Chesneau, Sylvain Leclercq, Karim Boumédiene, Catherine Baugé
3-Deazaneplanocin A (DZNep) is an inhibitor of S-Adenosyl-L-Homocysteine Hydrolase (SAHH) known to inhibit EZH2, a histone methylase upregulated during osteoarthritis. In this study, we assessed its effects in human articular chondrocytes. Anti-inflammatory effects were assessed by Nitric Oxide (NO), Prostaglandin E2 (PGE2) and Metalloprotease (MMP) release in IL-1β-stimulated chondrocytes. MAPK and NFκB activation was analyzed by western blotting. Differentially expressed genes (DEG) regulated by DZNep were identified by whole-transcriptome microarray...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28733346/regulation-and-action-of-early-growth-response-1-in-bovine-granulosa-cells
#9
Peng Han, Hilda Guerrero-Netro, Anthony Estienne, Binyun Cao, Christopher Price
Fibroblast growth factors (FGF) modify cell proliferation and differentiation through receptor tyrosine kinases, which stimulate the expression of transcription factors including members of the early growth response (EGR) family. In ovarian granulosa cells, most FGFs activate typical response genes, although the role of EGR proteins has not been described. In the present study, we determined the regulation of EGR mRNA by FGFs and explored the role of EGR1 in the regulation of FGF response genes. Addition of FGF1, FGF2, FGF4 or FGF8b increased EGR1 and EGR3 mRNA levels, whereas FGF18 increased only EGR1 mRNA abundance...
July 21, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28716058/srf-modulates-seizure-occurrence-activity-induced-gene-transcription-and-hippocampal-circuit-reorganization-in-the-mouse-pilocarpine-epilepsy-model
#10
Pascal Lösing, Cristina Elena Niturad, Merle Harrer, Christopher Meyer Zu Reckendorf, Theresa Schatz, Daniela Sinske, Holger Lerche, Snezana Maljevic, Bernd Knöll
A hallmark of temporal lobe epilepsy (TLE) is hippocampal neuronal demise and aberrant mossy fiber sprouting. In addition, unrestrained neuronal activity in TLE patients induces gene expression including immediate early genes (IEGs) such as Fos and Egr1.We employed the mouse pilocarpine model to analyze the transcription factor (TF) serum response factor (SRF) in epileptogenesis, seizure induced histopathology and IEG induction. SRF is a neuronal activity regulated TF stimulating IEG expression as well as nerve fiber growth and guidance...
July 17, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28712132/impact-of-lipoprotein-apheresis-with-dextran-sulfate-adsorption-on-the-expression-of-genes-involved-in-cardiovascular-health-in-the-blood-of-patients-with-homozygous-familial-hypercholesterolemia
#11
Jean-Philippe Drouin-Chartier, André J Tremblay, Jean Bergeron, Nathalie Laflamme, Benoît Lamarche, Patrick Couture
Lipoprotein apheresis (LA) with dextran sulfate adsorption (DSA) is a reliable method to decrease LDL-cholesterol (C) concentrations in patients with homozygous familial hypercholesterolemia (HoFH). The objective of the present study was to investigate the impact of LA with DSA on the mRNA expression of genes associated with cardiovascular health in the whole blood of HoFH patients. Blood samples were collected before and after LA treatment with DSA in 9 HoFH patients. Microarray analyses were performed to measure the whole blood expression of >30 000 annotated genes pre- and post-LA...
July 16, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/28708500/reversible-meiotic-arrest-of-bovine-oocytes-by-egfr-inhibition-and-follicular-hemisections
#12
Paulo Roberto Antunes da Rosa, Matheus Pedrotti De Cesaro, Andressa Minussi Pereira Dau, Raj Duggavathi, Vilceu Bordignon, Paulo Bayard Dias Gonçalves
The objective of this study was to investigate the effects of inhibiting the epidermal growth factor receptor (EGFR) pathway on meiosis blockage and resumption, mRNA expression of genes involved in oocyte maturation and cumulus expansion, and embryo development. Bovine cumulus-oocyte complexes (COCs) were cultured for 15 h in the presence of the EGFR inhibitor (AG1478) and follicular hemisections (FHS). Most of the oocytes (89.3%) remained at the germinal vesicle (GV) stage when cultured in the presence of FHS and 5 μM AG1478...
May 23, 2017: Theriogenology
https://www.readbyqxmd.com/read/28706200/global-transcriptome-analysis-identifies-differentially-expressed-genes-related-to-lipid-metabolism-in-wagyu-and-holstein-cattle
#13
Wanlong Huang, Yuntao Guo, Weihua Du, Xiuxiu Zhang, Ai Li, Xiangyang Miao
Fat deposition of beef cattle varies between breeds. However, the regulation mechanism is still not elucidated completely at molecular level. In the present study, we comparatively analyzed transcriptome of subcutaneous adipose tissue between Wagyu and Holstein cattle with a significant difference in fat deposition to identify key genes associated with fat metabolism and adipogenesis by high-throughput RNA-seq technology. A total of 59,149,852 and 69,947,982 high quality reads were generated, respectively. With further analysis, 662 differentially expressed genes were identified...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28705996/different-gene-response-to-mechanical-loading-during-early-and-late-phases-of-rat-achilles-tendon-healing
#14
Malin Hammerman, Parmis Blomgran, Arie Dansac, Pernilla Eliasson, Per Aspenberg
Mechanical loading stimulates tendon healing both when applied in the inflammatory phase and in the early remodeling phase of the process, although not necessarily via the same mechanisms. We investigated the gene response to mechanical loading in these two phases of tendon healing. The right Achilles tendon in rats was transected and the hind limbs were unloaded by tail suspension. The rats were exposed to 5 minutes of treadmill running 3 or 14 days after tendon transection. Thereafter, they were re-suspended for 15 minutes or 3 hours until euthanasia...
July 13, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28701958/a-single-dose-of-lsd-does-not-alter-gene-expression-of-the-serotonin-2a-receptor-gene-htr2a-or-early-growth-response-genes-egr1-3-in-healthy-subjects
#15
Patrick C Dolder, Edna Grünblatt, Felix Müller, Stefan J Borgwardt, Matthias E Liechti
Rationale: Renewed interest has been seen in the use of lysergic acid diethylamide (LSD) in psychiatric research and practice. The repeated use of LSD leads to tolerance that is believed to result from serotonin (5-HT) 5-HT2A receptor downregulation. In rats, daily LSD administration for 4 days decreased frontal cortex 5-HT2A receptor binding. Additionally, a single dose of LSD acutely increased expression of the early growth response genes EGR1 and EGR2 in rat and mouse brains through 5-HT2A receptor stimulation...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28698407/ccctc-binding-factor-inhibits-breast-cancer-cell-proliferation-and-metastasis-via-inactivation-of-the-nuclear-factor-kappab-pathway
#16
Jie Wu, Peng-Chang Li, Jun-Yi Pang, Guo-You Liu, Xue-Min Xie, Jia-Yao Li, Yi-Cong Yin, Jian-Hua Han, Xiu-Zhi Guo, Ling Qiu
CCCTC-binding factor (CTCF) is an important epigenetic regulator implicated in multiple cellular processes, including growth, proliferation, differentiation, and apoptosis. Although CTCF deletion or mutation has been associated with human breast cancer, the role of CTCF in breast cancer is questionable. We investigated the biological functions of CTCF in breast cancer and the underlying mechanism. The results showed that CTCF expression in human breast cancer cells and tissues was significantly lower than that in normal breast cells and tissues...
July 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28680740/haploinsufficient-tumor-suppressor-genes
#17
Kazushi Inoue, Elizabeth A Fry
Haploinsufficiency of tumor suppressor genes (TSGs) indicates that the reduced levels of proteins in cells that lack one allele of the genomic locus results in the inability of the cell to execute normal cellular functions contributing to tumor development. Representative cases of haploinsufficient TSGs are p27(Kip1), p53, DMP1, NF1, and PTEN. Tumor development is significantly accelerated in both mice with homozygous and heterozygous gene deletion, with expression of the wild type allele in the latter. Newly characterized TSGs such as AML1, EGR1, TGFβR1/2, and SMAD4 have also shown haploid insufficiency for tumor suppression...
2017: Advances in Medicine and Biology
https://www.readbyqxmd.com/read/28662520/regulation-of-ap-1-by-mapk-signaling-in-metal-stressed-sea-anemone
#18
Maayan Agron, Vera Brekhman, David Morgenstern, Tamar Lotan
BACKGROUND/AIMS: AP-1 transcription factor plays a conserved role in the immediate response to stress. Activation of AP-1 members jun and fos is mediated by complex signaling cascades to control cell proliferation and survival. To understand the evolution of this broadly-shared pathway, we studied AP-1 regulation by MAPK signaling in a basal metazoan. METHODS: Metal- stressed cnidarian Nematostella vectensis anemones were tested with kinase inhibitors and analyzed for gene expression levels and protein phosphorylation...
June 27, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28659168/gene-expression-profiles-and-signaling-mechanisms-in-%C3%AE-2b-adrenoceptor-evoked-proliferation-of-vascular-smooth-muscle-cells
#19
Anna Huhtinen, Vesa Hongisto, Asta Laiho, Eliisa Löyttyniemi, Dirk Pijnenburg, Mika Scheinin
BACKGROUND: α2-adrenoceptors are important regulators of vascular tone and blood pressure. Regulation of cell proliferation is a less well investigated consequence of α2-adrenoceptor activation. We have previously shown that α2B-adrenoceptor activation stimulates proliferation of vascular smooth muscle cells (VSMCs). This may be important for blood vessel development and plasticity and for the pathology and therapeutics of cardiovascular disorders. The underlying cellular mechanisms have remained mostly unknown...
June 28, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28651004/a-human-endogenous-retrovirus-derived-gene-that-can-contribute-to-oncogenesis-by-activating-the-erk-pathway-and-inducing-migration-and-invasion
#20
Cécile Lemaître, Jhen Tsang, Caroline Bireau, Thierry Heidmann, Marie Dewannieux
Endogenous retroviruses are cellular genes of retroviral origin captured by their host during the course of evolution and represent around 8% of the human genome. Although most are defective and transcriptionally silenced, some are still able to generate retroviral-like particles and proteins. Among these, the HERV-K(HML2) family is remarkable since its members have amplified relatively recently and many of them still have full length coding genes. Furthermore, they are induced in cancers, especially in melanoma, breast cancer and germ cell tumours, where viral particles, as well as the envelope protein (Env), can be detected...
June 2017: PLoS Pathogens
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