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Academic literature on the topic 'Cellules acineuses du pancréas – Cancer – Immunothérapie'
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Dissertations / Theses on the topic "Cellules acineuses du pancréas – Cancer – Immunothérapie"
Crescence, Lydie. "Propriétés thérapeutiques de l'anticorps monoclonal 16D10 sur les cellules tumorales pancréatiques humaines." Aix-Marseille 2, 2009. http://www.theses.fr/2009AIX20695.
Full textDelvaulx, Michel. "Antiport Na+/H+ des cellules acineuses pancréatiques : régulation par les peptides neuro-digestifs et rôle dans la prolifération cellulaire." Toulouse 3, 1990. http://www.theses.fr/1990TOU30009.
Full textMalicet, Cédric. "Contribution de p8 dans le cancer pancréatique." Aix-Marseille 2, 2005. http://theses.univ-amu.fr.lama.univ-amu.fr/2006AIX22026.pdf.
Full textThe main objective of our laboratory is to identify new molecules involved in the cellular stress response, especially during acute pancreatitis. We used DNA microarray analysis to identify the genes showing significant changes in their expression during acute pancreatitis. One of them was found of special interest because of its very early transcriptional induction in acinar cells during acute pancreatitis. We called it p8. In vivo several stress agents induce p8. Furthermore the fact that this gene could be also induced in vitro by several stress agents demonstrates its participation to a general stress response. For instance p8 is involved in cell-cycle regulation, by its ability to modulate some MAP kinase pathways (Article1) and by its role in p27Kip1 (Article2), and involved in apoptosis (Article3). P8 functions are modulated by its localization, nuclear or cytoplasmic, and by the different post-translational modifications which can modulate its half-life. In conclusion this work allowed characterisation of a gene involved in stress response, p8. This gene is overexpresed during a stress and controls several cellular mechanisms, which may explain its function in tumorigenesis
De, Vries Luc. "Etude de la régulation de l'ornithine décarboxylase par des peptides gastro-intestinaux et des facteurs de croissance dans les cellules pancréatiques AR4-2J." Toulouse 3, 1990. http://www.theses.fr/1990TOU30020.
Full textLaklai, Hanane. "Mécanismes anti-angiogéniques du récepteur de la somatostatine SST2, dans le cancer du pancréas : implication de la thrombospondine-1 et du TGF-beta." Toulouse 3, 2009. http://www.theses.fr/2009TOU30093.
Full textSomatostatin receptor sst2 behaves as a tumor suppressor when expressed and stimulated by its ligand somatostatin in pancreatic cancer cells. Re-introducing sst2 into the human pancreatic cancer cells results in a decrease of tumor progression and angiogenesis. However, the intracellular mechanisms responsible for sst2-dependent inhibition of tumor angiogenesis are unknown. We first showed that sst2 up-regulates the expression of the secreted angio-inhibitory factor thrombospondin-1 (TSP-1) in pancreatic cancer cells. The chick chorioallantoic membrane was used as an experimental in vivo model to demonstrate that TSP-1 is a critical effector of sst2 inhibitory role on neoangiogenesis and oncogenesis induced by pancreatic cancer cells. TSP-1 inhibited tumor cell-induced neoangiogenesis by inducing endothelial cell apoptosis and by directly sequestering the proangiogenic factor VEGF, and subsequently inactivating its angiogenic action on endothelial cells. Using human pancreatic tissue-microarrays, we have shown An up-regulation of both sst2 and TSP-1 tumor suppressors in precancerous lesions which may function as an early negative feedback to restrain pancreatic carcinogenesis. As an alternative mechanism underlying sst2 angio-inhibitory activity, we also showed that this receptor decreases the activation of the pro-angiogenic factor TGF-beta1 secreted by BxPC-3 cells. Sst2 blocks TGF-ß1 activation by down-regulating the expression of the matrix metalloproteinase-9 (MMP-9), a protease which cleaves and activates the secreted latent form of TGF-beta1 in an active form
Bertrand, Viviane. "Rôle du calcium dans les effets sécrétoire et prolifératif de la gastrine sur des cellules tumorales pancréatiques AR4-2J." Toulouse 3, 1994. http://www.theses.fr/1994TOU30053.
Full textDumartin, Laurent. "Identification de cibles diagnostiques et thérapeutiques potentielles pour l’adénocarcinome canalaire pancréatique dans un nouveau modèle chez l’embryon de poulet." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13739.
Full textPancreatic Ductal Adenocarcinoma (PDAC), the major form of pancreatic cancer, is one of the deadliest cancers because of its propensity for local invasion and vascular dissemination and the lack of early diagnostic strategy. We have developed a new in vivo invasion model, on the chick embryo chorioallantoic membrane, allowing the analyze of mechanisms governing interactions between pancreatic tumor cells and their host microenvironment. We showed in its model that the genes encoding netrin-1 and CXCL4L1/PF4v1 secreted proteins are up-regulated in tumor cells in the course of the invasion process and we confirmed these up-regulation was also observed in human patients. Our functional studies indicated that netrin-1 and CXCL4L1 may play regulator roles in tumor progression according to the following model: a) CXCL4L1 chimiokine may have an angiostatic activity on endothelial cells by a paracrine mechanism of action whereas b) netrin-1 may have a pro-tumoral activity by acting on both endothelial and tumor cells. These results allowed in one hand to validate our model by showing that selected up-regulated genes may be involved in PDAC progression in human patients. On the other hand, our work provided evidence that CXCL4L1 and netrin-1 constitute new potential therapeutic and/or diagnostic targets for pancreatic cancer