Literatura académica sobre el tema "Développement embryonnaire de la drosophile"
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Artículos de revistas sobre el tema "Développement embryonnaire de la drosophile"
Edery, Patrick, Eudeline Alix, Françoise Clerget-Darpoux y Anne-Louise Leutenegger. "Développement embryonnaire précoce". médecine/sciences 28, n.º 2 (febrero de 2012): 130–33. http://dx.doi.org/10.1051/medsci/2012282004.
Texto completoHeberle-Bors, Erwin y Sarcco de Vries. "Le développement embryonnaire des végétaux". Biofutur 1997, n.º 172 (noviembre de 1997): 38–42. http://dx.doi.org/10.1016/s0294-3506(97)89043-6.
Texto completoPLACHOT, Michelle, Anne-Marie JUNCA, Jacqueline MANDELBAUM, J. COHEN y J. SALAT-BAROUX. "Les échecs du développement embryonnaire". Reproduction Nutrition Développement 28, n.º 6B (1988): 1781–90. http://dx.doi.org/10.1051/rnd:19881022.
Texto completoEVAIN-BRION, Danièle. "Facteurs de croissance et développement embryonnaire". Reproduction Nutrition Développement 28, n.º 6B (1988): 1681–86. http://dx.doi.org/10.1051/rnd:19881012.
Texto completoParinaud, J. "Facteurs paternels influençant le développement embryonnaire". Andrologie 7, n.º 2 (junio de 1997): 220–26. http://dx.doi.org/10.1007/bf03034935.
Texto completoGhysen, A. y C. Dambly-Chaudière. "Le développement des organes sensoriels chez la drosophile". médecine/sciences 11, n.º 2 (1995): 178. http://dx.doi.org/10.4267/10608/2184.
Texto completoDe Arcangelis, A. y E. Georges-Labouesse. "Intégrines, développement embryonnaire et maladies : avancées récentes." médecine/sciences 15, n.º 5 (1999): 721. http://dx.doi.org/10.4267/10608/1416.
Texto completoRenard, JP y Y. Heyman. "Développement embryonnaire et clonage chez les mammifères". CrossRef Listing Of Deleted DOIs 41, n.º 3-4 (1992): 381–87. http://dx.doi.org/10.1051/rnd:19920319.
Texto completoGicquel, P., M. C. Giacomelli, C. Karger y J. M. Clavert. "Développement embryonnaire et croissance normale du genou". Revue de Chirurgie Orthopédique et Réparatrice de l'Appareil Moteur 93, n.º 6 (octubre de 2007): 100–102. http://dx.doi.org/10.1016/s0035-1040(07)92716-6.
Texto completoRenard, JP y Y. Heyman. "Développement embryonnaire et clonage chez les mammifères". Annales de Zootechnie 41, n.º 3-4 (1992): 381–87. http://dx.doi.org/10.1051/animres:19920319.
Texto completoTesis sobre el tema "Développement embryonnaire de la drosophile"
Roumengous, Solange. "Reprogrammation cellulaire et morphogenèse épithéliale pendant le développement embryonnaire chez la drosophile". Thesis, Nice, 2015. http://www.theses.fr/2015NICE4113.
Texto completoTissue morphogenesis relies on patterned cell shape changes and movements taking place in specific morphogenetic domains. In segmented tissues, anterior and posterior compartments represent independent morphogenetic domains which are made of distinct lineages separated by boundaries. We previously reported on a rare event leading to the exchange of specific ‘Mixer Cells’ (MCs) between compartments of the ectoderm. During dorsal closure, MCs, which are of anterior origin, cross the boundary to integrate the adjacent posterior compartment through de novo expression of the posterior determinant Engrailed (En). This reprograming process is dependent on JNK signalling and is restricted to the central abdominal region. Here, we show that JNK signalling represses Polycomb (Pc) expression and that loss of Pc leads to an absence of MCs reprogramming. FISH-DNA coupled to immunostaining further shows that MCs fate transition is accompanied by a release of the en promoter from the repressing Pc bodies. Interestingly, our genetic data reveal that spatial control of MCs reprograming depends on the activity of the Hox genes abdominal-A (abdA) and Abdominal-B (AbdB). In their respective domains, abd-A promotes mixing while abd-B behaves as a strong repressor, thus restricting cell mixing to the central abdominal region. Together, these results provide new insights into the mechanisms of developmental reprogramming, showing that segment boundary plasticity relies on regional control of cell remodelling involving a gene regulatory network composed of JNK, en, Pc, and Hox activities
Supatto, Willy. "Imagerie multiphoton quantitative et ablation laser par impulsions femtosecondes pour l'étude de l'expression génétique mécano-sensible chez l'embryon de drosophile sauvage". Paris 7, 2005. http://www.theses.fr/2005PA077210.
Texto completoThe development of an embryo involves a complex choreography of cell movements that are highly regulated both in time and space. These morphogenetic movements are controlled by cascades of gene expression. We are interested in the potential role of a mechanical feedback in this regulation process. More specifically, the expression of twist, a developmental gene involved in the control of morphogenesis, has been identified as mechano-sensitive during Drosophiia melanogaster gastrulation, The precise study of this process required to develop novel approaches that enabled us to visualize, quantify and modulate morphogenetic movements in vivo, in this thesis, we first demonstrate that non linear microscopies, such as two-photon excited fluorescence (2PEF) microscopy and third harmonie generation (THG) microscopy, are highly appropriate to image embryo development in 3D. These are analyzed by using particle image velocimetry (PiV) in order to quantify cell movements and deformations. In addition, a novel technique of laser surgery using femtosecond pulses is experimentally and biologically characterized and is used to modulate morphogenetic movements in a non-invasive way. Finally, this ail optical and non-genetic approach provide novel insight into the issue of twist mechano-sensitive expression in anterior pole cells. In particular, the correlation between gene expression and specific cell deformations is demonstrated In wild-type embryos
Kambris, Zakaria. "Fonctions transcriptionnelles des protéines HOX et rôles des molécules à domaine TIR au cours du développement embryonnaire de la drosophile". Université Louis Pasteur (Strasbourg) (1971-2008), 2002. http://www.theses.fr/2002STR13174.
Texto completoMariol, Marie-Christine. "Le développement embryonnaire chez Drosophila melanogaster : étude génétique et clonage d'un gène de polarité segmentale nécessaire au développement normal de l'embryon, le gène fused". Paris 6, 1987. http://www.theses.fr/1987PA066512.
Texto completoZhang, Yan. "Implementation of anti-apoptotic peptide aptamers in cell and "in vivo" models of Parkinson's disease". Thesis, Lyon, École normale supérieure, 2012. http://www.theses.fr/2012ENSL0788.
Texto completoParkinson’s disease is considered as the second most common neurodegenerative disease. Although the cause of the progressive cell loss of PD remains unclear to date, programmed cell death, inflammation and autophagy due to oxidative stress, gene mutations or protein aggregations within DA neuron have been suggested as potential causes. Peptide aptamers are small combinatorial proteins, with a variable loop inserted into a scaffold protein, human thioredoxin, hTRX. They are used to facilitate dissection of signaling networks by modulating specific protein interactions and functions. Two peptide aptamers were identified by functional selection which inhibit Bax-dependent cell death in mammalian models. One peptide aptamer (Apta-32) is binding two paralogues involved in endocytotic trafficking T32. The second peptide aptamer (Apta-34) is binding to a target "T34", a pro-apoptotic protein mediating apoptosis emanating from the nucleus. The work of my PhD thesis aimed to investigate the anti-apoptotic function of our two peptide aptamers in different PD models including cell model (in vitro), brain tissue slice and D. melanogaster (in vivo) ; in particular their impact on neuron survival after exposure to specific toxins. Two major toxins were applied in this work, 6-hydroxindopamine (6-OHDA) and Paraquat, a commonly used pesticide. Our observations indicated that Drosophila expressing Apta-32 in all neurons showed more resistance 48h after treatment with Paraquat, compared to drosophila expressing Apta-34 or TRX. Another study revealed a defect in phagocytosis of apoptotic bodies in drosophila embryo’s expressing Apta-32 in macrophage, suggesting Apta-32 could be involved in, and perhaps interfere with, the process of autophagy. This suggests that Apta-32 could protect against paraquat induced autophagy in neurons
Daulny, Anne. "Implication de la protéine DSP1 dans le contrôle génétique du développement embryonnaire précoce de Drosophila melanogaster". Orléans, 2003. http://www.theses.fr/2003ORLE2031.
Texto completoPouille, Philippe-Alexandre. "Biomécanique de la gastrulation chez Drosophila Melanogaster". Paris 7, 2009. http://www.theses.fr/2009PA077048.
Texto completoEmbryogenesis involves genetic network, epigenetic differentiation and biochemical cascades, but also physical properties of the tissues, to shape a precise morphology at each step of the process. The animal model used is Drosophila Melanogaster] the morphogenetic event studied is the invagination of ventral mesoderm during gastrulation, which proceeds in two main steps: a slow phase of apical stochastic constrictions followed by a rapid phase of global apex contraction. The thesis analyses the biomechanical components of the early embryo and the dynamics of its gastrulation. An elementary structure is selected, a hydrodynamic model is constructed and the invagination simulated, providing a first result: one active process alone is sufficient to reproduce in details the phenotypic changes during invagination, except the first stochastic phase of constriction. The genetic network and biochemical pathways involved are analysed and the need of a mechanical feedback linking the stochastic constriction to global contraction is discussed; ahypothesis of the mechanical sensor is proposed and tested experimentally. New simulations implementing the genetic and biochemical control and the presumed feedback mechanism into the former biomechanical modelling illustrates the accuracy of the assumption: the global contraction of the ventral cell apices leading to invagination is induced by a positive feedback from the mechanical constrains accumulated during previous stochastic constriction
Schaerlinger, Bérénice. "Rôle de la sérotonine dans le développement embryonnaire précoce de Drosophila melanogaster : Etude d'un mutant ponctuel du récepteur 5-HT2Dro". Université Louis Pasteur (Strasbourg) (1971-2008), 2004. https://publication-theses.unistra.fr/public/theses_doctorat/2004/SCHAERLINGER_Berenice_2004.pdf.
Texto completoSerotonin, known as a neurotransmitter in the central nervous system, plays an important role during cell migration in sea urchin, mice as well. Previous studies have shown that serotonin and its 5-HT2Dro receptor are important during germband extension in drosophila. Indeed, 5-HT2Dro receptor is transiently expressed during early embryogenesis. Removal of the 5-HT2Dro locus in a deleted drosophila strain allows us to prove the essential role of serotonin and its receptor for correct cell intercalation during germband extension. This work underlined a new point mutant in the 5-HT2Dro receptor gene. The point mutation is located in the N-terminal domain and confers to the receptor a gain of function. Most of homozygote embryos for the isogenic strain containing point mutant in 5-HT2Dro gene (M51) die during germband extension. M51 embryos display a “ghost” cuticular phenotype accompanied by a gastrulation defect. Indeed, time lapse video experiment demonstrated that cell migration speed is 4 times higher in M51 embryos compared to wild type embryos. However, the presence of a second mutation at 67A2-67D13 locus, on the same chromosome than 5-HT2Dro gain of function mutation in the l(3R)4830b, seems to compensate M51 phenotype. L(3R)4830b embryos present a less severe gastrulation defect and die later during germband retraction. The late lethality of l(3R)4830b embryos allowed us to show a new role for serotonin in the late regulation of Wingless expression. Indeed, an “denticle missing in A4” phenotype observed in homozygote l(3R)4830b embryos is due to an ectopic expression of Wingless specifically in fourth abdominal segment. Thus, this work demonstrates the major role of serotonin and 5-HT2Dro receptor during germband extension. It also showed that serotonin is able to regulate Wingless expression during late stages of drosophila embryogenesis. The signalling pathway involved in that process remains to be elucidated
Merle, Mélody. "Un modèle d'Ising asymétrique pour la régulation génétique". Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS617.
Texto completoGene regulation is a major actor of embryonic development. The structure of an organism is predefined by spatio-temporal patterns of expression from precursors genes. Regulation processes involving multiple genes are often represented by Gene Regulation Networks (GRN). In this thesis I present a novel spatial model of GRN. This model is a variant of the Ising model and is designed to have a minimal number of parameters. Its parameters, inter-actions between genes and the corresponding range of interaction, have similar roles to those of a reaction-diffusion automata. This model is able to form complex patterns, such as Turing patterns, which has never been osbserved before in short-range Ising-like models. This model is applied to early stage segmentation of Drosophila, in particular to the regulation of the gene eve. A sampling method, the Wang-Landau algorithm, is applied to the model. It is used to identify, within the parameter space, sub-volumes of networks producing a given pattern. The comparison of results obtained from 1D or 3D data show the solutions spaces intersect but are not identical. Finally, this thesis question the view of gene regulation in terms of networks, and redefined a gene regulation code whose adaptor would be the gene domain, a sequence surrounding the gene locus along the genome
Perez, Romero Carmina Angelica. "Noise and robustness downstream of a morphogen gradient : Quantitative approach by imaging transcription dynamics in living embryos". Electronic Thesis or Diss., Sorbonne université, 2019. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2019SORUS306.pdf.
Texto completoDuring development, cell differentiation frequently occurs upon signaling from gradients of molecules, called morphogens. A simple paradigm to study morphogens is the Bicoid gradient, which determines antero-posterior patterning in fruit fly embryos. This transcription factor allows the rapid expression of its major target gene hunchback, in an anterior domain with a sharp boundary. Using the MS2 system to fluorescently tag RNA in living embryos, we were able to show that the ongoing transcription process at the hunchback promoter is bursty Surprisingly, it takes only 3 minutes, from the first hints of transcription at the anterior to reach steady state with the setting of the sharp expression border in the middle of the embryo. To better understand the role of transcription factors other than Bicoid in this process, I used a two-pronged strategy involving synthetic MS2 reporters combined with the analysis of the hunchback MS2 reporter in various mutant backgrounds. The synthetic reporter approach, indicate that Bicoid is able to activate transcription on its own when bound to the promoter but in a stochastic manner. The binding of Hunchback to the Bicoid-dependent promoter reduces this stochasticity while Caudal might act as a posterior repressor gradient. Altogether, this work provide a new light on the mechanisms insuring a precise transcriptional response downstream of Bicoid
Libros sobre el tema "Développement embryonnaire de la drosophile"
Humeau, Claude. L' essentiel sur la reproduction et le développement embryonnaire au p.c.e.m. Montpellier: Sauramps Medical, 1985.
Buscar texto completoCarlson, Bruce M. Human embryology & developmental biology. 2a ed. St. Louis: Mosby, 1999.
Buscar texto completoHuman embryology and developmental biology. 4a ed. Philadelphia: Mosby/Elsevier, 2009.
Buscar texto completoHuman Embryology and Developmental Biology: With STUDENT CONSULT Online Access. Elsevier - Health Sciences Division, 2013.
Buscar texto completoHuman Embryology and Developmental Biology. Elsevier - Health Sciences Division, 2018.
Buscar texto completo(Editor), Michael Chapman, J. G. Grudzinskas (Editor) y T. Chard (Editor), eds. The Embryo. Springer-Verlag Berlin and Heidelberg GmbH & Co. K, 1991.
Buscar texto completoCapítulos de libros sobre el tema "Développement embryonnaire de la drosophile"
"Développement embryonnaire humain". En Embryologie et Histologie Humaines, 1–18. Elsevier, 2016. http://dx.doi.org/10.1016/b978-2-294-73779-4.00001-9.
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