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1	The histology of the sea pansies Renilla reniformis (Pallas) and Renilla kollikeri Pfeffer with a note on the fine structure of the latter species Lyke, Edward Bonsteel, January 1965 (has links) Thesis (Ph. D.)--University of Wisconsin--Madison, 1965. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Bibliography: leaves 141-149.
2	Développement d'un essai de complémentation protéique avec la Renilla luciférase et étude de la voie de biosynthèse des acides aminés aromatiques chez Saccharomyces cerevisiae Berger, Nathalie January 2005 (has links) Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal. Interaction protéine-protéine Renilla luciférase S. cerevisiae
3	Cysteinová tRNA reguluje proteosyntézu v lidských buněčných liniích / Cysteine tRNA regulates protein synthesis in human cell lines Kučerová, Michaela January 2021 (has links) A significant number of known human genetic diseases is associated with nonsense mutations leading to the introduction of a premature termination codon into the coding sequence. A termination codon can be read through by its near-cognate tRNA (tRNA with two anticodon nucleotides base-pairing with a stop codon); potentially generating C-terminally extended protein variants. In yeast, UGA stop codon was described to be read through by tRNA-Trp and tRNA-Cys. Similar was observed for tRNA-Trp in human HEK293T cell line. The aim of this thesis was to investigate if human tRNA-Cys can act as a near-cognate tRNA in human HEK293T cell line. There are two isoacceptors which constitute the tRNA-Cys family, with ACA and GCA anticodon. There are 1 and 23 isodecoders to the ACA and GCA anticodons, respectively. Here, altogether as many as nine tRNA-Cys isodecoders (distinct in their sequence and with varying levels of expression) were tested for their ability to increase UGA readthrough in HEK293T using p2luci and pSGDluc dual-luciferase reporter vectors. In both p2luci and pSGDluc, we observed that at least one tRNA-Cys isodecoder, tRNA-Cys-GCA-4-1, is capable of significantly elevating the UGA readthrough levels when overexpressed in HEK293T. This indicates that similarly to yeast, tRNA-Cys is capable of...
4	Synthèse d’analogues de la coelentérazine pour l’imagerie in vivo dynamique des signaux calciques - Synthèse d’analogues du (-)-EGCG comme inhibiteurs de Dyrk1a dans la thérapie symptomatique de la trisomie 21 / Synthesis of coelenterazine analogs for dynamic in vivo imaging of calcium signaling -Synthesis of (-)-EGCG analogs as Dyrk1a inhibitors in the symptomatic therapy of Down syndrome Gealageas, Ronan 01 December 2011 (has links) Au cours de cette thèse, deux sujets distincts ont été étudiés : d’une part la synthèse d’analogues de la coelentérazine, substrat de différentes luciférases, pour une application en imagerie in vivo, et d’autre part la synthèse d’analogues du (-)-EGCG, inhibiteur de la kinase Dyrk1a, impliquée notamment dans les troubles cognitifs rencontrés dans la trisomie 21.La problématique du premier sujet consistait à obtenir des analogues de la coelentérazine conservant leur activité sur deux luciférases, la luciférase Renilla et l’aequorine, tout en induisant un déplacement vers le rouge de la bioluminescence produite par ces enzymes. L’aequorine, sensible au calcium, représentait la cible biologique principale du projet.Sept analogues dont six originaux ont été obtenues par des méthodes de synthèse classiques, et leurs activités ont pu être testées sur les deux luciférases choisies, avec des résultats probants : malgré des émissions de lumière moins intenses que celles obtenues avec la coelentérazine native, plusieurs molécules ont entrainé un déplacement vers le rouge de la longueur d’onde d’émission de lumière par bioluminescence allant jusqu’à 27 nm pour l’aequorine et plus de 120 nm pour la luciférase Renilla.Le second sujet, de chimie médicinale classique, a principalement consisté à la synthèse d’analogues du gallate d’épigallocatéchine (EGCG) au squelette simplifié, et au sein desquels le cycle pyranique caractéristique des catéchines a été remplacé par un carbocycle. Plusieurs molécules ont pu être synthétisées, dont deux présentant le motif hexaphénol. Leur activité inhibitrice de Dyrk1a a pu être testée in vitro et l’une d’entre elle s’est déjà révélée plus active que l’EGCG. / During this thesis, two distinct projects were studied: on the one hand, the synthesis of coelenterazine analogs, substrate of several luciferases, in the purpose of using them for in vivo imaging, and on the other, the synthesis of (-)-EGCG analogs, inhibitor of the Dyrk1a kinase, which interests us for the role it plays in the mental retardation existing in the Down Syndrome disease.The problematic of the first project consisted in obtaining coelenterazine analogs that would not only maintain their activity on two luciferases, the Renilla luciferase and aequorine, but they should also induce a red-shift of the bioluminescence produced by these enzymes. Because of its sensitivity to calcium, aequorine was the main biologic target of this project.Seven analogs, of which six had an original structure, were synthesized through usual synthetic methodologies and their activities on both aequorine and Renilla luciferase were tested in vitro, with interesting results: even if the intensities of light emission were weaker than those obtained with native coelenterazine, several molecules produced a red-shift of the emission wavelength of bioluminescence, up to 27nm for aequorine and more than 120nm for the Renilla luciferase. The second project, of classical medicinal chemistry, mainly consisted in the synthesis of epigallocatechin gallate analogs (EGCG) with a simplified backbone and in which the pyranic ring typical of catechins was replaced by a carbocycle. Several molecules were synthesized, two of them possessing the hexaphenol motif. Their inhibiting activity of Dyrk1a was tested in vitro and one already showed a better activity than natural EGCG. Chimie médicinale Coelentérazine EGCG Dyrk1a Aequorine Renilla Luciférase Bioluminescence Chimioluminescence Kinase Suzuki Déméthylation Mitsunobu Benzyne Cétoacétal Aminopyrazine Medicinal chemistry Coelenterazine EGCG Dyrk1a Aequorine Renilla Luciferase Bioluminescence Chemiluminescence Kinase Suzuki Demethylation Mitsunobu Benzyne Ketoacetal Aminopyrazine
5	Micro RNA-Mediated regulation of the full-length and truncated isoforms of human neurotrophic tyrosine kinase receptor type 3 (NTRK 3) Guidi, Mònica 13 January 2009 (has links) Neurotrophins and their receptors are key molecules in the development of thenervous system. Neurotrophin-3 binds preferentially to its high-affinity receptorNTRK3, which exists in two major isoforms in humans, the full-length kinaseactiveform (150 kDa) and a truncated non-catalytic form (50 kDa). The twovariants show different 3'UTR regions, indicating that they might be differentiallyregulated at the post-transcriptional level. In this work we explore howmicroRNAs take part in the regulation of full-length and truncated NTRK3,demonstrating that the two isoforms are targeted by different sets of microRNAs.We analyze the physiological consequences of the overexpression of some of theregulating microRNAs in human neuroblastoma cells. Finally, we providepreliminary evidence for a possible involvement of miR-124 - a microRNA with noputative target site in either NTRK3 isoform - in the control of the alternativespicing of NTRK3 through the downregulation of the splicing repressor PTBP1. / Las neurotrofinas y sus receptores constituyen una familia de factores crucialespara el desarrollo del sistema nervioso. La neurotrofina 3 ejerce su funciónprincipalmente a través de una unión de gran afinidad al receptor NTRK3, del cualse conocen dos isoformas principales, una larga de 150KDa con actividad de tipotirosina kinasa y una truncada de 50KDa sin dicha actividad. Estas dos isoformasno comparten la misma región 3'UTR, lo que sugiere la existencia de unaregulación postranscripcional diferente. En el presente trabajo se ha exploradocomo los microRNAs intervienen en la regulación de NTRK3, demostrando que lasdos isoformas son reguladas por diferentes miRNAs. Se han analizado lasconsecuencias fisiológicas de la sobrexpresión de dichos microRNAs utilizandocélulas de neuroblastoma. Finalmente, se ha estudiado la posible implicación delmicroRNA miR-124 en el control del splicing alternativo de NTRK3 a través de laregulación de represor de splicing PTBP1. RISC complex retinoic acid renilla luciferase real-time quantitative PCR PTBP1 pri-miRNA pre-miRNA post-transcriptional regulation piRNA PicTar pGL4.13 PCR P-body p75NTR overexpression NTRK3 NTRK2 NTRK1 non-coding RNAs NGF neurotrophin neurotrophic signaling neuronal differentiation neurodevelopment neuroblastoma nervous system mRNA miRNA target prediction miRNA profiling miRNA mimic miRNA microarray miRNA inhibitor miRanda microRNA microarray luciferase assay Ingenuity Pathway Analysis (IPA) heLa cells gene silencing gene regulation full-length isoform (FL-NTRK3) firefly luciferase ERK disease dicer cancer development BDNF argonaute alternative splicing 3'UTR RNAhybrid RT-PCR SH-SY5Y cells siRNA standard error synaptic plasticity target validation TargetScan transfection translational repression TrkA TrkB TrkC truncated isoform (TR-NTRK3) tyrosine kinase (TK) western blot 575 61

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