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Papel de parp-1 en procesos de muerte celular inducida por el tratamiento con el antineoplásico doxorrubicina

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TLDR
El objetivo del presente proyecto de tesis ha sido the determinacion of los efectos de the inhibicion of PARP, una proteina nuclear implicada en procesos de reconocimiento y reparacion of danos en el ADN.
Abstract
La ausencia de control de los mecanismos apoptoticos proporciona ventajas de supervivencia a las celulas tumorales (1). p53 juega un papel central en la regulacion del crecimiento y muerte celulares (2). En cancer de mama, las alteraciones de las vias apoptoticas incluyen la regulacion negativa de la via de receptores de muerte, mutaciones en p53 y sobre-expresion de BCL-2 (3-5). Estas deficiencias en p53 confieren resistencia a tratamientos quimioterapeuticos usados en clinica, como es el caso de Doxorubicina (DOXO), una potente antraciclina ampliamente usada en protocolos clinicos antineoplasicos (6,7). El objetivo del presente proyecto de tesis ha sido la determinacion de los efectos de la inhibicion de PARP, una proteina nuclear implicada en procesos de reconocimiento y reparacion de danos en el ADN (8,9), sobre la citotoxicidad de doxorubicina y el mecanismo por el cual el uso de inhibidores quimicos de PARP (4-amino 1,8-naftalimida, ANI) sensibiliza la muerte inducida por doxo.

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Quantification of late complications after radiation therapy

TL;DR: It appears worthwhile to try to identify, in follow-up examinations of patients after radiation therapy, what kind of processes might be involved in triggering subclinical residual injury to develop into a clinically manifest late effect.
References
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Targeting the DNA repair defect in BRCA mutant cells as a therapeutic strategy

TL;DR: BRCA1 or BRCA2 dysfunction unexpectedly and profoundly sensitizes cells to the inhibition of PARP enzymatic activity, resulting in chromosomal instability, cell cycle arrest and subsequent apoptosis, illustrating how different pathways cooperate to repair damage.
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Poly(adp-ribosyl)ation reactions in the regulation of nuclear functions

TL;DR: The total dependence of poly(ADP-ribose) synthesis on DNA strand breaks strongly suggests that this post-translational modification is involved in the metabolism of nucleic acids, and the presence of PARP in these multiprotein complexes clearly supports an important role for poly(ADE-ribosyl)ation reactions in DNA transactions.
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Amplified RNA synthesized from limited quantities of heterogeneous cDNA.

TL;DR: A method for producing amplified heterogeneous populations of RNA from limited quantities of cDNA and sequences for cyclophilin and guanine nucleotide-binding protein (G-protein) alpha subunits have been detected in aRNA derived from single cerebellar tissue sections.
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XRCC1 Is Specifically Associated with Poly(ADP-Ribose) Polymerase and Negatively Regulates Its Activity following DNA Damage

TL;DR: The results provide strong evidence that PARP is a member of a BER multiprotein complex involved in the detection of DNA interruptions and possibly in the recruitment of XRCC1 and its partners for efficient processing of these breaks in a coordinated manner.