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Artykuły w czasopismach na temat "ARN interférant"
Cochat, Pierre, Anne-Laure Sellier-Leclerc, Aurélia Bertholet-Thomas i Justine Bacchetta. "Traitement par ARN interférent : exemple de l’hyperoxalurie primitive". Néphrologie & Thérapeutique 17 (kwiecień 2021): S23—S26. http://dx.doi.org/10.1016/j.nephro.2020.02.002.
Pełny tekst źródłaDereure, O. "Petits ARN interférants : quel intérêt dans les génodermatoses ?" Annales de Dermatologie et de Vénéréologie 137, nr 10 (październik 2010): 665–66. http://dx.doi.org/10.1016/j.annder.2010.07.002.
Pełny tekst źródłaBitko, V., i W. Zhang. "ARN interférents par voie nasale contre virus respiratoires". Revue Française des Laboratoires 2005, nr 371 (marzec 2005): 16. http://dx.doi.org/10.1016/s0338-9898(05)80154-4.
Pełny tekst źródłaFattal, E. "Stratégies thérapeutiques pour l’application clinique des ARN interférents". Bulletin de l'Académie Nationale de Médecine 204, nr 9 (grudzień 2020): 1088–97. http://dx.doi.org/10.1016/j.banm.2020.06.013.
Pełny tekst źródłaPalliser, D., D. Chowdhury, O. Y. Wang, S. J. Lee, R. T. Bronson, D. M. Knipe i J. Lieberman. "Des ARN interférents pour un microbicide anti-HSV 2". Revue Francophone des Laboratoires 2006, nr 380 (marzec 2006): 16. http://dx.doi.org/10.1016/s1773-035x(06)80110-3.
Pełny tekst źródłaLemoine, Sandrine, i Marie Courbebaisse. "Petits ARN interférents : applications potentielles pour les néphrologues Small interfering RNA: potential applications for nephrologists". Néphrologie & Thérapeutique 18, nr 6 (grudzień 2022): 6S1–6S6. http://dx.doi.org/10.1016/s1769-7255(22)00646-0.
Pełny tekst źródłaPariente, Alexandre. "Traitement de la maladie hépatique due au déficit en α1-antitrypsine : un espoir grâce au fazirsiran, un ARN interférent". Hépato-Gastro & Oncologie Digestive 30, nr 1 (styczeń 2023): 112–15. http://dx.doi.org/10.1684/hpg.2023.2494.
Pełny tekst źródłaGrolleau, C., M. Battistella, Z. Eve, T. Poisot, T. Mahévas, M. Jachiet, A. Mékinian i in. "L’analyse transcriptomique en séquençage ARN révèle une inflammation commune médiée par les interférons dans le syndrome de VEXAS, le syndrome de Sweet et les myelodysplasia cutis". Annales de Dermatologie et de Vénéréologie - FMC 4, nr 8 (grudzień 2024): A245—A246. http://dx.doi.org/10.1016/j.fander.2024.09.221.
Pełny tekst źródła"ARN interférents contre rhumatisme". Revue Francophone des Laboratoires 2013, nr 451 (kwiecień 2013): 14. http://dx.doi.org/10.1016/s1773-035x(13)71970-1.
Pełny tekst źródłaBouvenot, G. "Les traitements par ARN interférents et par oligonucléotides antisens actuellement disponibles en France : une mise au point". Bulletin de l'Académie Nationale de Médecine, luty 2022. http://dx.doi.org/10.1016/j.banm.2022.02.005.
Pełny tekst źródłaRozprawy doktorskie na temat "ARN interférant"
Leite, Nascimento Thais. "Lipoplexes recouverts d’acide hyaluronique pour le ciblage d’ARN interférant à des cellules tumorales surexprimant le récepteur CD44". Thesis, Paris 11, 2015. http://www.theses.fr/2015PA114834/document.
Pełny tekst źródłaRecent progresses in the preclinical and clinical use of small interfering RNA (siRNA) have shown their potential as an inhibitor of protein synthesis in many diseases such as cancer. The administration of siRNA encounters a number of problems related to their rapid degradation in biological media, and their difficulty in penetrating targeted cells due to their hydrophilicity and negative charge. A key to improving the therapeutic efficacy of these molecules is based on the use of vectors. In this thesis, lipoplexes that can protect siRNA against degradation and facilitate their transport into target cells were developed and optimized. To do this, lipoplexes covered with HA were formulated for active vectorization of siRNA to tumor cells overexpressing the receptor CD44.In the first part of this thesis, the formation of lipoplexes was studied, and the parameters influencing their supramolecular organization. Insertion of HA within the liposome structure during vesicle formation resulted in the increase in liposome size as a function of HA concentration. Their complexation with siRNA has further increased the size of the particles obtained. The addition of siRNAs when forming lipoplexes caused a displacement of a portion of the HA-DOPE conjugate from the lipoplexes structure, as shown by capillary electrophoresis. The isothermal titration calorimetry and X-ray diffraction studies showed that a rearrangement of the lipid bilayers occur under the effect of electrostatic interactions with siRNAs, leading to the formation of oligolamellar vesicles, which was visually confirmed by cryo-microscopy. Finally, the proper positioning of the HA on the surface of the lipoplexes and its ability to specifically bind to the CD44 receptors has been demonstrated by the surface plasmon resonance technique.In the second part of this thesis, cellular uptake and intracellular localization of HA-lipoplexes were assessed by flow cytometry and fluorescence microscopy, and showed that lipoplexes modified by HA are internalized more rapidly than unmodified lipoplexes, and once in the cells, they are mainly localized within the endosomes. The ability of lipoplexes to transport intact siRNA molecules to the cytoplasm was confirmed by 81% of luciferase in vitro expression inhibition on the lung cancer cell line A549-luc. In vivo, treatment with HA-lipoplexes carrying anti-luciferase siRNA led to a statistically significant decrease in expression of luciferase, which was confirmed by reducing the mRNA expression of luciferase in lungs of animals treated with HA-lipoplexes. The analysis of the distribution of lipoplexes in the lungs showed that lipoplexes modified with HA are distributed more evenly in the lung tissue than unmodified lipoplexes.In the third part of this thesis, the movement of siRNA HA-lipoplexes in the mucus was studied to assess the feasibility of administering these particles directly to the lungs. Studies using the technique of "multiple particle tracking (MPT)" showed that the presence of HA combined with the addition of siRNA allowed the preparation of two lipoplexes formulations with efficient mucus-penetration, HA-lipoplexes and PEG/HA-lipoplexes.In conclusion, an efficient siRNA lipoplex system for inhibiting gene expression targeted TO the CD44 receptorS has been developed. The results confirm that the HA-lipoplexes are able to effectively release in vitro and in vivo the siRNA molecules in the cytoplasm of cells
Martins, Aline. "flam and co : mise en place d'une répression programmée des éléments transposables par la voie des piARNs dans le soma gonadique au cours du développement chez Drosophila melanogaster". Electronic Thesis or Diss., Université Clermont Auvergne (2021-...), 2024. http://theses.bu.uca.fr/nondiff/2024UCFA0081_MARTINS.pdf.
Pełny tekst źródłaOnly 2% of the human genome is coding; most of the rest is made up of repeated sequences, including transposable elements (TEs). Present in the genome of all sequenced organisms - and representing almost 45% of human DNA - TEs are nucleotide sequences capable of moving around the genome. This transposition phenomenon makes them strong internal mutagens, which is why organisms have developed different strategies to regulate their mobilisation.The piRNA pathway is a conserved mechanism in the reproductive tissue of metazoans for regulating the expression of TEs. PiRNA clusters are loci dedicated to the production of piRNAs, key players in the pathway to protect the germline genome from invasion by these TEs, potential sources of mutations and transmissible pathologies.In Drosophila, the piRNA pathway is also present in somatic cells bordering germ cells and supporting their development. Despite significant progress in understanding the role of small RNAs in heterochromatin formation and repression of TEs, the mechanisms by which these processes are set up during development and maintained through cell divisions, particularly in somatic cells, remain underexplored. Our study has shown that, unlike the germline piRNA clusters, whose identity is acquired by maternal deposition of small RNAs in the early embryonic stages, expression of the majority somatic cluster, flamenco, occurs later, when the somatic cells of the embryonic gonad meet the germline and differentiate. The accumulation of flamenco transcripts is not only necessary for the establishment of the somatic piRNA pathway, but also for its maintenance throughout the life of Drosophila; the slightest disruption of flamenco leads to a derepression of TEs correlated with female sterility. The study was also carried out in males, showing that flamenco plays a less drastic role in the repression of TEs in the testis
Angelova, Margarita. "CG7009 and CG5220 - novel tRNA methyltransferases linking tRNA biogenesis to the regulation of the sncRNA pathways". Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS224.
Pełny tekst źródłaSmall non-coding RNA-mediated silencing is a widespread mechanism of genetic repression. Its deregulations have been linked to severe phenotypes and pathologies. The best-characterized small RNA silencing pathways are the small interfering RNA (siRNA), the microRNA (miRNA) and the piwi-interacting RNA (piRNA) pathways.In this PhD manuscript are characterized the molecular functions of CG7009 and CG5220: two 2’-O tRNA methyltransferases of Drosophila melanogaster which are conserved from yeast (Trm7) to human (FTSJ1). Mutations in their yeast ortholog Trm7 are linked to a severe growth defect phenotype and in their human ortholog, FTSJ1, to non-syndromic X-linked intellectual disability (NSXLID). Mutant flies have an ovarian size reduction phenotype, decreased resistance to DCV viral infection, and differential transposable element expression levels in somatic and germinal tissues. CG7009 is involved in both the miRNA Ago-2-dependent and in the siRNA pathways in the Drosophila melanogaster S2 cell line and in developing flies. CG5220, a paralog of CG7009, is involved in the miRNA Ago-2-dependent pathway in flies, similarly to CG7009. Furthermore, CG7009 and CG5220 have a role in the somatic piRNA pathway. Lack of 2’-O methylation (Nm) on tRNAPhe in CG7009 mutants triggers differential tRNA fragmentation profiles and tRNA fragments (tRFs) accumulation. tRFs are stable RNAs derived from the cleavage of mature tRNAs, that have been detected in bacteria, plants, yeast, flies and humans and linked to various functions. Recent research point to tRFs as a novel class of sncRNAs. Our results link the loss of Nm with tRFs accumulation and the regulation of the sncRNA pathways
Chèvre, Raphaël. "Étude du mécanisme d'action des copolymères à blocs amphiphiles pour le transfert de gène in vivo". Nantes, 2009. https://archive.bu.univ-nantes.fr/pollux/show/show?id=53397cdd-f222-4eb5-8820-49663ddd216f.
Pełny tekst źródłaAmphiphilic block copolymers have been developed recently for their efficient in vivo transfection activities in various tissues including skeletal muscle, heart and lung. However their mechanism of action remains unknown and better understanding of this mechanism represents a major goal for the future development of this new class of vectors. In this study, we particularly focused on Lutrol®, an FDA approved polymer, because of its high in vivo efficiency and remarkably low toxicity. As block copolymers does not allow the transfection of cultured cells in vitro, we suggested that the cell environment was strongly involved in their mechanism of action. In order to evaluate the mechanism of these polymers at the cellular level, we designed a model allowing us to observe the impact of Lutrol® on the different steps involved in the nucleic acids trafficking, from the transgene internalisation to its expression. Using several in vitro transfection strategies involving direct or indirect assemblies of Lutrol® / nucleic acids / cationic vectors, we attempted to elucidate which steps were influenced by lutrol, its role on nucleic acids and cells, but also the reasons of its in vitro transfection inability. Results presented in this report strongly suggest that Lutrol® improves transfection efficiency by a passive and inert physico-chemical mechanism, leading to the enhancement of cellular uptake through a direct delivery mechanism into the cell cytoplasm, and not via an endosomal pathway, strongly contrasting with cationic lipids internalisation pathway
Noy, Kodie. "ARN viraux et senseurs intracellulaires participant à la réponse immunitaire innée lors des infections par les arénavirus Mopeia et Lassa". Electronic Thesis or Diss., Lyon, École normale supérieure, 2024. http://www.theses.fr/2024ENSL0047.
Pełny tekst źródłaThe genus Mammarenavirus is comprised of several highly pathogenic viruses of global health concern. Lassa virus (LASV) in particular is responsible for thousands of cases annually in Western Africa. Ail Mammarenavirus possess an exoribonuclease (ExoN) domain in their nucleoproteins (NP). This domain dégradés double-stranded RNA (dsRNA) with high affinity and therefore has been proposed to prevent the récognition of viral dsRNA produced during the viral réplication, therefore preventing the activation of the interferon (IFN) response. While the importance of this ExoN activity in arénavirus virulence is well established, nothing is known about the dsRNA molécules that are targeted by NP for dégradation and the dsRNA sensors activated by these dsRNA molécules are yet to be described. In addition, important différences may exist in the control of the IFN response by pathogenic arenaviruses such as LASV or closely related but non-pathogenic viruses such as Mopeia virus (MOPV). I addressed these questions using reverse genetics Systems developed in our laboratory. We generated recombinant LASV and MOPV with abrogated ExoN domains that are no longer able to control the IFN response. I hypothesized that these LASVExoN and MOPVExoN viruses would no longer be capable of degrading dsRNA produced during viral réplication and therefore would be recognized by the host innate immune response. I présent here novel data in A549 cells using these MOPVExoN and LASVExoN mutants, demonstrating that the MAVS signaling pathway and particularly RIG-I is responsible for LASV and MOPV sensing, viral atténuation and IFN production. I was also able to purify RNA bound to RIG-I during the réplication of these viruses, which I showed were immunostimulatory even outside of an infectious context via transfection of synthetic RNA. I also demonstrated that blocking expression of antiviral proteins allowed these ExoN viruses to replicate in A549 cells and I identified two key antiviral proteins in our infection model in A549 cells. I présent these results in the hope that it will enrich our understanding of Mammarenavirus biology, and to bring to light notable différences that we can use to explain the différence in Mammarenavirus pathogenicity and immunogenicity
Stierlé, Vérène. "Reversion du phénotype de résistance multiple aux antitumoraux par les petits ARNs interférents". Paris 6, 2005. http://www.theses.fr/2005PA066612.
Pełny tekst źródłaLavergne, Thomas. "Nouvelle méthode de synthèse d'ARN et préparation de prodrogues de siARN modifiés par des groupements acyloxyméthyle en position 2' des ribonucléosides". Montpellier 2, 2009. http://www.theses.fr/2009MON20112.
Pełny tekst źródłaExpansion of RNA based technology has revived research for more powerful methodology for chemical RNA synthesis. Moreover, use of unmodified RNA as drug is restricted by poor cell permeation and low enzymatic stability in vivo. This work was related to these two challenges : find a new efficient strategy for chemical RNA synthesis and develop modified RNA in order to improve in vivo efficiency. Here, an original methodology for chemical RNA synthesis based on the protection of ribonucleosides 2'-hydroxyl by acetalester groups is presented. Thus, natural RNA heterosequences could be obtained with high purity and efficacy. This technology is currently under evaluation for commercial application. In a second part, we describe the synthesis of modified RNA bearing biolabile acetalester groups on nucleoside 2'-hydroxyl after full deprotection of other RNA functions. Synthesis and properties of this modified RNA, named pro-RNA in relation to their potential activity as siRNA prodrugs in RNA interference mechanism, are reported
Bégin-Lavallée, Valérie. "Inhibition fonctionnelle du récepteur CCR2 par une nouvelle approche d'interférence de l'ARN : application au domaine de la douleur". Mémoire, Université de Sherbrooke, 2012. http://hdl.handle.net/11143/6266.
Pełny tekst źródłaDrouet, Valérie. "Utilisation de petits ARN interférents pour le traitement de la maladie de Huntington". Paris 6, 2009. http://www.theses.fr/2009PA066407.
Pełny tekst źródłaBruniaux, Jonathan. "Développement de nanoparticules lipidiques pour la délivrance de courtes séquences d'ARN interférents". Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENV025/document.
Pełny tekst źródłaL'auteur n'a pas fourni de résumé en anglais
Książki na temat "ARN interférant"
1961-, Gaur Rajesh K., i Rossi John J, red. Regulation of gene expression by small RNAs. Boca Raton: Taylor & Francis, 2009.
Znajdź pełny tekst źródłaMarin, Latterich, red. RNAi. New York, NY: Taylor & Francis Group, 2008.
Znajdź pełny tekst źródłaEngelke, David R., i John J. Rossi. RNA Interference. Elsevier Science & Technology Books, 2005.
Znajdź pełny tekst źródłaJohnson, Paul H., i John J. Rossi. RNA Interference: Application to Drug Discovery and Challenges to Pharmaceutical Development. Wiley & Sons, Incorporated, John, 2011.
Znajdź pełny tekst źródłaMicroRNA Methods, Volume 427 (Methods in Enzymology) (Methods in Enzymology). Academic Press, 2007.
Znajdź pełny tekst źródłaRossi, John J., i Rajesh K. Gaur. Regulation of Gene Expression by Small RNAs. Taylor & Francis Group, 2009.
Znajdź pełny tekst źródłaRossi, John J., i Rajesh K. Gaur. Regulation of Gene Expression by Small RNAs. Taylor & Francis Group, 2017.
Znajdź pełny tekst źródłaRossi, John J., i Rajesh K. Gaur. Regulation of Gene Expression by Small RNAs. Taylor & Francis Group, 2009.
Znajdź pełny tekst źródłaRNAi: RNAi (Advanced Methods). Taylor & Francis, 2007.
Znajdź pełny tekst źródłaMapping of Nervous System Diseases Via MicroRNAs. Taylor & Francis Group, 2016.
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