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Estudio de la función inmunológica de la fosfatasa alcalina no específica de tejido

Authors: Hernández Chirlaque, Cristina;

Estudio de la función inmunológica de la fosfatasa alcalina no específica de tejido

Abstract

Las fosfatasas alcalinas (APs, ortofosfórico monoéster fosfohidrolasa, EC 3.1.3.1) son una superfamilia de enzimas (glicoproteinas) ampliamente distribuidas, se encuentra desde en bacterias hasta en el hombre. Las fosfatasas alcalinas son enzimas homodiméricas que catalizan la hidrólisis grupos fosfato (R-OP) con la liberación de fosfato inorgánico (Pi) y un alcohol, azúcar, fenol…(R-OH) a pH alcalino. En el sitio catalítico contienen 3 iones metálicos, dos de Zn y uno de Mg, necesarios para la actividad enzimática. Aunque las principales caracteríasticas del mecanismo catalítico se conservan entre especies, cuando se comparan las APs de mamíferos y bacterias, se observa que las APs de mamíferos tienen mayor actividad específica, un mayor pH alcalino óptimo y una menor estabilidad al calor. Además, las APs de mamíferos se encuentran ancladas a la membrana y son inhibidas por L-amino ácidos y péptidos mediante un mecanismo acompetitivo. En esta Tesis Doctoral se propone caracterizar la implicación de la fosfatasa alcalina no específica de tejido en la actividad, diferenciación y proliferación de células del sistema inmunológico y más concretamente de linfocitos T. Se utilizarán para ello distintas herramientas incluyendo ratones heterocigotos para la expresión de TNAP e inhibidores específicos de AP. Además se estudiará la implicación en la respuesta inflamatoria de la TNAP expresada en linfocitos, utilizando un modelo de colitis por transferencia de linfocitos naïve de ratones heterocigotos para la TNAP a ratones Rag-1-/-, deficientes en linfocitos T y B maduros.

Tesis Univ. Granada. Programa Oficial de Doctorado en: Biomedicina

Country
Spain
Related Organizations
Keywords

3201, Citoquinas, Sistema inmunológico, Enfermedad inflamatoria intestinal, Farmacología, 616, Linfocitos, Fosfatasa alcalina, 616-097, Expresión génica

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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