Search results for "forme"
showing 10 items of 1192 documents
Vérification des créances
2014
International audience; (Ordonnance n° 2014-326 du 12 mars 2014)
Beetwen Berlin and Moscow: Polish Western Thought in the Twenty-Year Interwar Period
2020
The article was submitted on 27.02.2020. This article is not primarily focused on presenting arguments and views held by Polish political groups with reference to the territorial shape of the Polish state after the First World War. Instead, its aim is to draw attention to actions taken by these groups towards the defence of Polish western lands. One of the key problems of Poland’s foreign policy after 1918 was the question of relations with its neighbours, chiefly Germany and Russia (and the Soviet Union). For many years, the most serious problem faced by post-Versailles Europe was that of the Germans striving to revise the legal order, to break their political isolation, and return to the …
Ausencias relevantes en la teoria del curriculum.
2020
Se señalan en el artículo algunas ausencias significativas sobre el modo en que la teoría se ha venido enfrentando al currículum, con especial énfasis sobre lo ocurrido en el contexto español. La historia política del currículum, la mirada desde estudios culturales, la producción de los regímenes de verdad en el currículum, la falta de problematización de las narrativas modernas que inspiran e impregnan la producción curricular o la oportunidad de considerar la ciudad como currículum son algunos de los aspectos que se comentan. Some significant absences are pointed out in the article about the way in which the theory has been confronting the curriculum, with special emphasis on what happene…
Benzo[a]pyrene represses DNA repair through altered E2F1/E2F4 function marking an early event in DNA damage-induced cellular senescence
2020
AbstractTranscriptional regulation of DNA repair is of outmost importance for the restoration of DNA integrity upon genotoxic stress. Here we report that the potent environmental carcinogen benzo[a]pyrene (B[a]P) activates a cellular DNA damage response resulting in transcriptional repression of mismatch repair (MMR) genes (MSH2, MSH6, EXO1) and of RAD51, the central homologous recombination repair (HR) component, ultimately leading to downregulation of MMR and HR. B[a]P-induced gene repression is caused by abrogated E2F1 signalling. This occurs through proteasomal degradation of E2F1 in G2-arrested cells and downregulation of E2F1 mRNA expression in G1-arrested cells. Repression of E2F1-me…
Transcriptional repression of Bmp2 by p21(Waf1/Cip1) links quiescence to neural stem cell maintenance.
2013
Relative quiescence and self renewal are defining features of adult stem cells, but their potential coordination remains unclear. Subependymal neural stem cells (NSCs) lacking cyclin-dependent kinase (CDK) inhibitor (CKI) 1a (p21) exhibit rapid expansion that is followed by their permanent loss later in life. Here we demonstrate that transcription of the gene encoding bone morphogenetic protein 2 (Bmp2) in NSCs is under the direct negative control of p21 through actions that are independent of CDK. Loss of p21 in NSCs results in increased levels of secreted BMP2, which induce premature terminal differentiation of multipotent NSCs into mature non-neurogenic astrocytes in an autocrine and/or …
Immunosurveillance of lung melanoma metastasis in EBI-3-deficient mice mediated by CD8+ T cells.
2008
Abstract EBV-induced gene 3 (EBI-3) codes for a soluble type I receptor homologous to the p40 subunit of IL-12 that is expressed by APCs following activation. In this study, we assessed the role of EBI-3 in a model of lung melanoma metastasis. Intravenous injection of the B16-F10 cell line resulted in a significant reduction of lung tumor metastasis in EBI-3−/− recipient mice compared with wild-type mice. The immunological finding accompanying this effect was the expansion of a newly described cell subset called IFN-γ producing killer dendritic cells associated with CD8+ T cell responses in the lung of EBI-3−/− mice including IFN-γ release and TNF-α-induced programmed tumor cell death. Depl…
Consequences of antigen self-presentation by tumor-specific cytotoxic T cells.
2000
Abstract CDS-positive cytotoxic T cells (CTL) recognize antigenic peptides in combination with major histocompatibility complex (MHC) class I molecules on the surface of syngeneic antigen presenting cells (APC). In the present paper we show that cells from tumor antigen-specific CTL clones present their cognate antigenic peptide to other CTL from the same clone. Inter-CTL peptide presentation resulted in activation of the cells of one CTL clone to MHC-unrestricted lysis of bystander cells. In contrast to the behaviour of this clone, another CTL clone did not lyse bystander cells after incubation with the cognate peptide, but was activated to self-destruction. The human herpes virus Epstein-…
A tyrosinase peptide presented by HLA-B35 is recognized on a human melanoma by autologous cytotoxic T lymphocytes
1999
We previously described different cytotoxic T lymphocyte (CTL) clones isolated from the blood lymphocytes of a melanoma patient after in vitro stimulation with autologous tumor cells. These CTL clones recognized at least 2 distinct antigens on the melanoma cells. Here, we show that one of them consists of a peptide derived from tyrosinase and presented by HLA-B35. The peptide is 9 amino acids long and has the sequence LPSSADVEF. It can be presented by the 2 major B35 allelic subtypes, B*3501 and B*3503. As HLA-B35 is one of the most frequent HLA-B specificities, being present in about 20% of Caucasian individuals, it may be a useful target for peptide-based immunotherapy of melanoma.
Utilidad de los informes estructurados basados en una plataforma web para el diagnóstico por imagen en patología mamaria
2015
El cáncer de mama es una enfermedad con un gran impacto sobre la salud poblacional. A pesar de los avances en esta enfermedad, la mortalidad sigue siendo elevada, por lo que es importante investigar en otros campos y herramientas como por ejemplo en el ámbito de la recogida de datos de forma estandarizada, para recoger información de forma estructurada, decisiones protocolizadas y más objetivas, mejorando esto el pronóstico de la enfermedad. Con respecto a las necesidades actuales referentes fundamentalmente a los sistemas de información, los desarrollos realizados en esta Tesis Doctoral combinan la aplicación de tecnologías y estándares de la información. La hipótesis de trabajo de esta te…
Poly(ADP-ribosyl)ation accelerates DNA repair in a pathway dependent on Cockayne syndrome B protein
2003
Activation of poly(ADP-ribose)polymerases 1 and 2 (PARP-1 and PARP-2) is one of the earliest responses of mammalian cells to DNA damage by numerous genotoxic agents. We have analysed the influence of PARP inhibition, either achieved by over-expression of the DNA binding domain of PARP-1 or by treatment with 3,4-dihydro-5-[4-(1-piperidinyl)butoxyl]-1(2H)-isoquinolinone, on the repair of single-strand breaks (SSB), pyrimidine dimers and oxidative base modifications sensitive to Fpg protein (mostly 8-hydroxyguanine) in mammalian cells at very low, non-cytotoxic levels of DNA damage. The data show that the repair rates of all three types of DNA damage are significantly lower in PARP-inhibited c…