... knockdown of all Shc isoforms strongly reduced Decma-induced Erk phosphorylation Moreover, expression of silent mutants of Shc isoforms showed that only p46Shc and p52Shc rescued the effect of the ... University of Basel, Switzerland) and details will be published elsewhere Plasmids and siRNAs Construction of expression vectors for HA-tagged fulllength mouse p46shc, p52shc, and p66shc and the ... collagen gel, and showed that disruption of cell–cell adhesion induced Erk signaling downstream of E-cadherin This Erk activation was Src- and Shc-dependent and resulted in enhanced expression of the...
Ngày tải lên: 19/02/2014, 05:20
... functional replacement of kaiBCp [15], and now Nakahira and coworkers [16] report the functional replacement of both kaiAp and kaiBCp Both studies found that expression of the Kai proteins needs ... condensation and coiling of DNA [19] It is well known that changes in the local supercoiling status of DNA can affect the transcriptional rate of genes [20], and our findings concerning the behavior of ... [15] and the lab of Susan Golden [21], in addition to the study of Nakahira and coworkers [16], are consistent with this hypothesis, namely that the condensation or supercoiling status of the...
Ngày tải lên: 09/08/2014, 20:20
Báo cáo khoa học: Control of mammalian gene expression by amino acids, especially glutamine potx
... existence of a large variety of target genes involved in major functions in the organism [15,82,83] Tables and and Fig illustrate both the diversity of the studies into the effect of glutamine and ... Decreased DNA binding and p65 protein level Decreased nuclear p50 and p65 levels and phosphorylated STAT1 and STAT5 Decreased IKKb and decreased p65 binding Increased IjBa expression and decreased p65 ... role of glutamine has been extensively studied both in vivo and in vitro, and data obtained on the regulation of cytokine production by the amino acid led to demonstration of the involvement of...
Ngày tải lên: 07/03/2014, 00:20
Báo cáo khoa học: Dynamic association of MLL1, H3K4 trimethylation with chromatin and Hox gene expression during the cell cycle ppt
... levels of MLLs and H3K4 trimethylation are not affected, they are modulated at the promoters of specific genes over different phases of the cell cycle 1630 Results and Discussion Dynamics of MLL1 and ... profiles of MLL1, CGBP, Ash2 and Rbbp5, together with cyclins E and B, as a function of the cell cycle Western blot analysis of the whole-cell extract and histones from different stages of the ... involvement of p53 and p21 MLL1 and H3K4 methylation are critical for Hox gene regulation during the cell cycle In order to understand the molecular mechanism of the differential regulation of Hox...
Ngày tải lên: 23/03/2014, 06:20
báo cáo hóa học:" Progressive obesity leads to altered ovarian gene expression in the Lethal Yellow mouse: a microarray study" pptx
... current study However, Figure expression of selected Time RT-PCR and black Ovarian mice analyzed by Realgenes in 90- and 180-day LY Ovarian expression of selected genes in 90- and 180day LY and black ... cortisol and cortisone are the major active and inactive forms, respectively Glucocorticoids are important in the pathogenesis of obesity and insulin resistance, and expression and activity of 11beta-hydroxysteroid ... cytology, and absence of large follicles and corpora lutea on ovarian histology (unpublished data) Late estrus/metestrus mice were given Antide (10 μg/g BW, i.p.) on the morning of day of treatment, and...
Ngày tải lên: 20/06/2014, 07:20
Báo cáo sinh học: " Coordinated gene expression by post-transcriptional regulons in African trypanosomes" potx
... biological replicates, and careful monitoring of the time course of parasite differentiation) The level of co-regulation of some T brucei genes was striking and several clusters of coordinated gene ... epimastigote and metacyclic forms within the insect The three recent BMC Genomics papers by Kabani and colleagues [1], Jensen and colleagues [2], and Queiroz and colleagues [3] have taken advantage of ... RNA-binding proteins were often found in the clusters of co-regulated genes and, as suggested in [3], some of these proteins might regulate the expression of genes that are part of the regulon In contrast...
Ngày tải lên: 06/08/2014, 19:21
Báo cáo khoa học: "Effects of Benzo[a]pyrene, 2-Bromopropane, Phenol and 2,3,7,8-Tetrachlorodibenzo-p-Dioxin on Proinflammatory Cytokines Gene Expression by Mice Spleen Cells" doc
... polymerase, 6㎕ of 25mM MgCl2, 8l of 10×PCR buffer, 1㎕ of each primer (100pmoles) PCR conditions were: 30 cycles of 30 s at 94℃, 30 s at 60℃ and 90 s at 72℃ for β-actin, IL-1β and TNF α, 25cycles of 30 ... major growth factor of T cells, is mainly produced by CD4+T cells, and the quantity of IL-2 synthesized by activated T cells is an important determinant of the magnitude of immune responses [9] ... pollutants in the presence of anti-CD3 The present investigation shows that exposure of murine splenocytes to 10-9M of TCDD induces IFNγ and TNFα gene expression, and suppresses IL-1 expression...
Ngày tải lên: 07/08/2014, 15:20
Báo cáo khoa học: "Comparative evaluation of phenobarbital-induced CYP3A and CYP2H1 gene expression by quantitative RT-PCR in Bantam, Bantamized White Leghorn and White Leghorn chicks" ppsx
... ces 003 rof C 27 ta noisnetxe lanif dna ces 09 rof C 27 pmet noisnetxe ,ces 54 rof C 06 pmet gnilaenna ,ces 54 rof C 49 ta noitarutaned ,ces 06 rof C 49 ta noitarutaned laitini ,sgniwollof eht ... stibihni dica ciadiakO ]9[ )Mµ 001( niloksrofyxoedid ,1 dna )Mµ 001( niloksrof ,)Mµ 004( BP htiw srh 61 rof sllec amotapeh nekcihc gnitaert retfa dnuof osla saw 73A3PYC fo slevel tpircsnart fo ... oitar noisserpxe evitaler a tneserper R ,alumrof siht nI )fer E( =R )tegrat E( )lortnoC− elpmaS( fer PC∆ )lortnoC− elpmaS( tegrat PC∆ :alumrof gniwollof skcihc nrohgeL etihW )C( dna nrohgeL etihW...
Ngày tải lên: 07/08/2014, 18:21
Báo cáo toán học: "Iodine Alters Gene Expression in the MCF7 Breast Cancer Cell Line: Evidence for an Anti-Estrogen Effect of Iodine" doc
... improve our understanding of breast cancer physiology and potentially lead researchers toward the development of novel treatments or enhancements of current therapies In this study we provide the ... development and oncogenesis J Mammary Gland Biol Neoplasia 2004, 9:145-163 Bostner J, Ahnstrom Waltersson M, Fornander T, Skoog L, Nordenskjold B, Stal O Amplification of CCND1 and PAK1 as predictors of ... (CYP1A1, CYP1B1, and AKR1C1) demonstrated a significant increase in mRNA levels (Figures 2B and C) Discussion As the body of evidence builds, the importance of iodine on the maintenance of healthy...
Ngày tải lên: 08/08/2014, 17:20
Báo cáo y học: "Abnormalities of B cell phenotype, immunoglobulin gene expression and the emergence of autoimmunity in Sjögren’s syndrome" pdf
... hypothesis of homing and activation of specific B cells in the glands B cell malignancies and Sjögren’s syndrome In contrast to the focal sialadenitis of the minor (labial) salivary glands, the ... than other regions of the VH molecule Evidence of clonal expansions The major salivary glands are known to be the site of preferential B cell expansions and in some cases of lymphoproliferation ... cells Interaction of CD27 with its ligand on T cells, CD70, serves as a pathway of differentiation of B cells into plasma cells [73,75,76] Recently, homotypic interaction of CD27 and CD70 expressed...
Ngày tải lên: 09/08/2014, 01:21
Báo cáo y học: " Quantitative biomarker analysis of synovial gene expression by real-time PCR" potx
... MMP-1, and GAPDH using TaqMan chemistry and Q-PCR as described in Materials and methods Figure shows that the stimulated PBMC are a source of mRNA for the target genes of interest The expression of ... species capable of being a standard template to a family of relevant targets However, significant problems limit the use of plasmid DNA for PCR standards Plasmid is pure doublestranded DNA of fixed ... amount of RNA Variability of direct C(t) determination versus the standard curve method To evaluate the performance of real-time PCR quantification using both the raw C(t) measurement and the standard...
Ngày tải lên: 09/08/2014, 01:23
Báo cáo y học: "Tumor necrosis factor alpha and epidermal growth factor act additively to inhibit matrix gene expression by chondrocyte" pptx
... MSc candidate, participated in the design of the study, performed all the experiments and analysis, prepared the figures, and contributed to the writing of the manuscript SMB conceived of the study, ... study, apoptosis was not initiated by TNF-α and/ or EGF as there was no cleavage of PARP and no evidence of DNA fragmentation (TUNEL staining) TNFα and EGF separately had no effect on levels of ... [7,13,14] and amplify IL-1-mediated release of prostaglandin E2 from synovial cells [15] However, the combined effects of EGF and TNF-α have not been investigated previously The objective of the...
Ngày tải lên: 09/08/2014, 06:22
Curcumin modulates dopaminergic receptor, CREB and phospholipase c gene expression in the cerebral cortex and cerebellum of streptozotocin induced diabetic rats potx
... and it reversed to near control value in insulin and curcumin treated diabetic rats (Figure and 4) Page of 11 Real Time-PCR Analysis of CREB in the cerebral cortex and cerebellum of control and ... binding of the radioligand on X-axis and bound/free on Y-axis using Sigma plot software (version 2.0, Jandel GmbH, Erkrath, Germany) The maximal binding is a measure of the total number of receptors ... amplification of CREB mRNA from the cerebral cortex of control and experimental rats Values are mean ± S.D of 4-6 separate experiments Each group consist of 6-8 rats Relative Quantification values and standard...
Ngày tải lên: 10/08/2014, 05:21
Báo cáo y học: "Regulation of chondrocyte gene expression by osteogenic protein-1" ppt
... analysis of the expression data we used a three step analytical strategy: (I) processing of raw intensity values and normalization of profiles, (II) examination of expression levels of gene categories ... expression of IL-6 and members of the IL-6 family of chemokines as well as their receptors and signaling mediators Furthermore, the tight association between these two classes of mediators (OP-1 and ... activity of IL-1b [16,17] and other catabolic mediators such as fragments of cartilage matrix, fibronectin and hyaluronan [17-20] Therefore, it was of interest to determine the effects of OP-1...
Ngày tải lên: 12/08/2014, 15:22
Retrovirology Commentary BioMed Central Open Access Inhibition of HIV-1 gene expression by pptx
... Ontario HIV Treatment Network and the Canadian Institutes of Health Research References The suggestion that Sam68ΔC can discriminate nef mRNA from that of tat and rev is of particular interest given ... unspliced, singly spliced and nef mRNAs to block their translation by preventing the binding of PABP1 (shown as a small blue circle) In contrast, PABP1 binds to tat and rev mRNAs, and translation is ... One hypothesis is based on the position of the different reading frames and the influence of translation on 3' UTR structure/RNP composition Both tat and rev mRNAs contain reading frames encoding...
Ngày tải lên: 12/08/2014, 23:20
Báo cáo y học: " Inhibition of HIV-1 gene expression by Ciclopirox and Deferiprone, drugs that prevent hypusination of eukaryotic initiation factor 5A" potx
... concentrations of CPX and DEF (Fig 1D, inset) We therefore characterized the action of CPX and DEF on eIF5A and HIV gene expression in 293T cells during the first 12 to 24 hr of drug treatment ... action of CPX and DEF is exerted at the level of the accumulation, splicing or nucleo-cytoplasmic distribution of HIV RNA, we transfected pNL4-3-LucE- into 293T cells and monitored spliced and unspliced ... Drug inhibition of this construct, which retains only ~1,967 nt of viral sequence, was also 50% (Fig 5) All of these constructs have two intact LTRs, derived from the 5' and 3' ends of the molecular...
Ngày tải lên: 12/08/2014, 23:22
Báo cáo y học: "Comment on and reply to "Analysis of variation of amplitudes in cell cycle gene expression" by Liu, Gaido and Wolfinger: On the analysis of gene expression during the normal, eukaryotic, cell cycle" docx
... which goes down to 2N and back to 4N and never repeats the 8N In between the start and the end there is no systematic variation of cells through G1, S and G2 In summary, the work of Whitfield et al ... wary of accepting the results of Whitfield et al as a synchrony experiment Summary The work of Liu, Gaido and Wolfinger [1] is a statistical analysis of a well-regarded paper [2] on the pattern of ... synchronized culture is one where the starting cells are all of the same genome content and cell size and thus reflect the properties of cells of a particular cell-cycle age while growing in unlimited...
Ngày tải lên: 13/08/2014, 23:20
Báo cáo y học: "Mouse maps of gene expression in the brain" pot
... within and between 12 known classes of forebrain neurons in mice Data such as these will be key to understanding the function and development of circuits in the brain and for genetic manipulation of ... standard published adult and developmental brain atlases for both mice and rats The GENSAT project goes farthest in describing the anatomy of gene expression and compares data from numbers of ... limitation to one age and one gender will no doubt be addressed in future efforts And, at this point, the annotation of the anatomical location of expression is only semi-automated and requires expert...
Ngày tải lên: 14/08/2014, 07:21
Báo cáo y học: "Cell-specific microarray profiling experiments reveal a comprehensive picture of gene expression in the C. elegans nervous system" ppsx
... plasma membrane and vesicular transporters for choline and acetylcholine (cho-1 and unc-17), GABA (snf-11 and unc-46, unc-47), dopamine (dat-1 and cat-1), and glutamate (glt-3 and eat-4) are included ... reference and experimental samples this approach should detect a significant fraction of known neuronal transcripts and thus provide an initial test of the specificity of this strategy Comparisons of ... this profile As shown in Table and Additional data file 17, all but one of the transgenic lines (24 of 25) derived from these promoter GFP fusions show expression in neurons (Figure 6) Of the...
Ngày tải lên: 14/08/2014, 07:22