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Antigenicidad e inmunogenicidad de las proteínas de choque térmico

Authors: Requena, J. M.; Soto, M.; Quijada, L.; Alonso, C.;

Antigenicidad e inmunogenicidad de las proteínas de choque térmico

Abstract

Los organismos eucariotas y procariotas responden frente a estímulos potencialmente dañinos, tales como temperaturas elevadas, aumentando la síntesis de una familia de proteínas conocidas como proteínas de choque térmico (HSPs) o proteínas de estrés. Las HSPs se encuentran entre las proteínas más conservadas y abundantes presentes en la naturaleza. Estas proteínas han generado un mayor interés desde que fueron descritas como antígenos dominantes de microorganismos infecciosos. Se ha sugerido que el reconocimiento por el sistema inmune de las HSPs del patógeno sirve como una primera línea de defensa al tiempo que es la forma por la que se puede desencadenar un proceso auto inmune como consecuencia de la aparición de una reactividad cruzada con las HSPs propias. Como una consecuencia de su función chaperona, las HSPs se encuentran asociadas a un amplio espectro de péptidos derivados de las células de las que estas proteínas se aislan. Por ello, no resulta sorprendente que los complejos HSP-péptidos se comporten como antígenos específicos de tumores. Resulta destacable que la vacunación con estos complejos HSP-péptidos induce respuestas inmunes protectivas frente al tumor del que fueron aislados dichos complejos. Finalmente, datos recientes indican que las características antigénicas de las HSPs pueden ser explotadas para aumentar la respuesta inmune humoral y celular frente a proteínas de interés.

Prokaryotic and eukaryotic organisms respond to potentially damaging stimuli such as elevated temperature by increasing the synthesis of a family of proteins collectively known as heat shock proteins (HSPs) or stress proteins. HSPs are among the most highly conserved and abundant proteins found in nature. Much interest has been generated in HSPs since they were described as dominant antigens of infectious microorganisms. It has been suggested that this immune recognition of pathogen HSPs serves as a first line of defense as well as a means by which autoimmune cascades may develop due to the inappropriate cross reactivity with self-HSPs. As a consequence of their chaperone functions, HSPs are associated with a broad spectrum of peptides derived from the cells from which they are isolated. Hence, it is not surprising that HSP-peptide complexes have been described as tumor specific antigens. Remarkably, it has been demonstrated that vaccination with these HSP-peptide complexes elicit protective immune response against the tumor from which complexes were isolated. Finally, recent findings indicate that the antigenic properties of HSPs can be exploited to enhance the humoral and cellular immune response to proteins of interest.

Country
Spain
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Keywords

HSP90, Células tumorales, Antígenos, Respuesta inmune, HSP60, Proteínas de choque térmico, HSP70

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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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