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Academic literature on the topic 'Ovocytes – Croissance – Aspect moléculaire'
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Journal articles on the topic "Ovocytes – Croissance – Aspect moléculaire"
Benhamou, N., and K. Picard. "La résistance induite : une nouvelle stratégie de défense des plantes contre les agents pathogènes." Article de synthèse 80, no. 3 (April 12, 2005): 137–68. http://dx.doi.org/10.7202/706189ar.
Full textDissertations / Theses on the topic "Ovocytes – Croissance – Aspect moléculaire"
Crozet, Flora. "Somatic cells enhance the oocyte developmental potential through cytoplasmic protrusions." Electronic Thesis or Diss., Sorbonne université, 2021. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2021SORUS166.pdf.
Full textIn female mammals, somatic cells surrounding the oocyte, termed granulosa cells, coordinate the critical stages of post-partum oocyte development, i.e. oocyte growth and meiotic maturation, by dialoguing with the oocyte. This dialogue is primarily mediated by cell-cell contact carried out by granulosa cell protrusions termed transzonal projections (TZPs). TZPs are analogous to filopodia in their snake-like shape, but also in their structural composition. TZPs are located in the zona pellucida, the extracellular matrix surrounding the oocyte, and their extremities establish cellular junctions with the oocyte membrane, i.e. gap and adherens junctions. In my thesis, I investigated the role of TZP-mediated interaction between granulosa cells and the oocyte in oocyte development. By generating a total knockout of Myosin-X, a molecular motor contained in TZPs and participating in filopodia formation, we obtained mouse mutant oocytes with a reduced TZP density at the end of oocyte growth. This reduction does not impede the oocyte from reaching a canonical size. However, it impairs zona pellucida integrity, oocyte-matrix adhesion, and the oocyte transcriptome at the end of oocyte growth, with a subset of transcripts mostly up-deregulated. Importantly, TZP-deprived oocytes tend to cease their development at metaphase of the first meiotic division, despite a well-assembled division spindle and properly aligned chromosomes. We propose that somatic cells modulate the synthesis or stability of a subset of oocyte transcripts through their cellular protrusions. This modulation enhances the oocyte capacity to end meiotic maturation, and by extension, the chances of producing an embryo
Vallée, Maud. "Identification de gènes spécifiques à l'ovocyte conservés au cours de l'évolution." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24138/24138.pdf.
Full textDelaunay, Rudy. "Croissance moléculaire dans des agrégats d’hydrocarbures aromatiques polycycliques induite par des collisions avec des ions." Caen, 2016. https://tel.archives-ouvertes.fr/tel-01640994.
Full textCloutier, Marc. "Études des mécanismes biomoléculaires de la croissance pulmonaire induite par l'occlusion trachéale : importance du sentier Rho/ROCK." Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/27854/27854.pdf.
Full textBereterbide, Agnès. "Caractérisation génétique et moléculaire des anomalies du développement floral chez une lignée alloplasmique mâle-stérile de tabac." Bordeaux 2, 2001. http://www.theses.fr/2001BOR28833.
Full textThe alloplasmic tobacco line (Nta(rep) combines the nucleus of Nicotiana tabacum with the cytoplasm of Nicotiana repanda. This line exhibits a male-sterile phenotype and a defect in male reproductive organ (stamens) development. The stamens are feminised and some of them are fused to the female reproductive organ (carpel) indicating a perturbation of the boundary between whorls 3 and 4 corresponding to the stamens and the carpel, respectively. Cytological analyses showed that floral anomalies in the Nta(rep)S line are due to an impairment of the floral meristem. To verify that the cadastral-type anomalies are linked to a misregulation of the NtSUP gene, homolog to the Arabidopsis SUPERMAN (SUP) we have tried to complement this defect by ectopic expression of Arabidopsis SUPERMAN gene. SUP over-expression in the fertile line led us to precise the SUP functions. SUP controls negatively cell proliferation but also cell expansion and differentiation. In the Nta(rep)S line, SUP over-expression had restored (i) the boundary between whorls 3 and 4 (ii) stamen development and (iii) the male fertility. As the male sterility is maternally inherited, a NtSUP misregulation by methylation process appeared to be an interesting way to investigate. A fragment of the NtSUP gene has been cloned and used as a probe to show that this gene is down-regulated by methylation in the Nta(rep)S line. To confirm these results, we analysed the effect of a hypomethylating treatment in the Nta(rep)S line. This treatment had for consequence a reactivation of the NtSUP expression and a partial restoration of the floral phenotype
Daniel, Laurent. "Rôle des molécules d'adhésion et des glycoconjugués dans le processus cancéreux." Aix-Marseille 2, 2001. http://theses.univ-amu.fr.lama.univ-amu.fr/2001AIX20685.pdf.
Full textQuillet, Renaud. "Définition moléculaire de l'origine des alteractions morphologiques liées à la dysfonction de Twist." Université Louis Pasteur (Strasbourg) (1971-2008), 2002. http://www.theses.fr/2002STR13182.
Full textMoulin, Julie-Alexandra. "Développement d'outils permettant l'évaluation quantitative de la maturité pulmonaire foetale à un temps gestationnel précis chez la souris." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24783/24783.pdf.
Full textGuillemette, Stéphanie. "La contribution de Mek2 dans le développement du placenta murin." Thesis, Université Laval, 2007. http://www.theses.ulaval.ca/2007/24208/24208.pdf.
Full textRoumanie, Olivier. "Mise en évidence et caractérisation des relations fonctionnelles entre la protéine RhoGAP Rgd1 et la protéine Vrp1 chez la levure Saccharomyces cerevisiae." Bordeaux 2, 2000. http://www.theses.fr/2000BOR28770.
Full textThe yeast Saccharomyces cerevisiae is the first eucaryote whose genome was fully sequenced. The analysis of its genomic sequence has led to the discovery of 6293 ORF, which might correspond to genes allowing yeast autonomous life. 70 % of these ORF correspond to potential new genes. The functional analysis of the ORF YBR260c was initiated. It showed that this ORF corresponded to a S. Cerevisiae gene, which was named RGD1 for Related GAP Domain. The Rgd1 protein acts in vitro as a GTPase Activating Protein (GAP) for the yeast Rho3 and Rho4 small G proteins. Using a genetic screen, a synthetic lethal interaction between RGD1 and VRO1 genes was discovered. The VRP1 gene encodes a protein named verproline, which is homologous to human WIP protein. The verproline is an actin and myosins interacting protein involved in polarized growth. Characterization of RGD1-VRP1 genetic interaction revealed the implication of the Rho3 and Rho4 proteins, two members of the Ras superfamily. The results obtained using mutant forms of Rho3p and Rho4p are in favour of Rho3p and Rho4p being the targets of Rgd1p RhoGAP activity in vivo. Genetic and functional analyses made it possible to enlighten cellular relationships between VRP1, RGD1, RHO3 or RHO4 and cytoskeleton-linked genes, in particular the yeast counterpart of human WASP gene, LAS17. These results allow us to present a biological model. A proteic complex, including Vr1p, would act in concert with a signalling pathway defined by the Rho3 and Rho4 proteins to participate in polarized cell growth. Rgd1p, via its GAP activity, would act as a negative regulator of the Rho3/Rho4 pathway
Books on the topic "Ovocytes – Croissance – Aspect moléculaire"
Savidge, R. A. Cell and Molecular Biology of Wood Formation (Experimental Biology Reviews). Garland Science, 2000.
Find full textFlorence, Haseltine, First Neal L, and Center for Population Research (National Institute of Child Health and Human Development), eds. Meiotic inhibition: Molecular control of meiosis : proceedings of a symposium held at the National Institutes of Health, Bethesda, Maryland, January 1987. New York: A.R. Liss, 1988.
Find full textTeaford, Mark F., Moya Meredith Smith, and Mark W. J. Ferguson. Development, Function and Evolution of Teeth. Cambridge University Press, 2000.
Find full text(Editor), Mark F. Teaford, Moya Meredith Smith (Editor), and Mark W. J. Ferguson (Editor), eds. Development, Function and Evolution of Teeth. Cambridge University Press, 2000.
Find full textTeaford, Mark F., Moya Meredith Smith, and Mark W. J. Ferguson. Development, Function and Evolution of Teeth. Cambridge University Press, 2000.
Find full textTeaford, Mark Franklyn, Moya Meredith Smith, and Mark W. J. Ferguson. Development, Function and Evolution of Teeth. Cambridge University Press, 2000.
Find full textTeaford, Mark F., Moya Meredith Smith, and Mark W. J. Ferguson. Development, Function and Evolution of Teeth. Cambridge University Press, 2004.
Find full textLoughna, P. T., and J. M. Pell. Molecular Physiology of Growth. Cambridge University Press, 2011.
Find full textT, Loughna P., and Pell J. M, eds. Molecular physiology of growth. Cambridge: Cambridge University Press, 1996.
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