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    •   RIUMA Principal
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    • Biología Molecular y Bioquímica - (BMB)
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    New findings on the cellular effects of newly synthetized histamine in mammalian cells

    • Autor
      Sanchez-Jimenez, Francisca MariaAutoridad Universidad de Málaga
    • Fecha
      2014
    • Palabras clave
      Histamina
    • Resumen
      Histamine (Hia) is the most multifunctional biogenic amine. It is synthetized by histidine decarboxylase (HDC) in a reduced set of mammalian cell types. Mast cells and histaminergic neurons store Hia in specialized organelles until the amine is extruded by exocytosis; however, other immune and cancer cells are able to produce but not store Hia. The intracellular effects of Hia are still not well characterized, in spite of the physiopathological relevance of the amine. Multiple functional relationships exist among Hia metabolism/signaling elements and those of other biogenic amines, including growth-related polyamines. In a previous work, we obtained the first insights for an inhibitory effect of newly synthetized Hia on the cell cycle of non-fully differentiated mammalian cells. In the present work, we describe progress on this line. HEK293 cells were transfected to express active and inactive versions of GFP-human HDC. Cells expressing GFP fusion proteins were sorted by flow cytometry and their relative levels of protein expression related to cell signaling were measured using an Antibody Microarray. Experimental results were analyzed in terms of protein-protein and functional interaction networks. Key facts were experimentally validated by different approaches. The analyses uncover cross-talk mechanisms among biogenic amine-related pathways and provide new clues on the molecular mechanisms underlying the regulatory effects of intracellular newly synthetized Hia on cell proliferation/survival, cell trafficking and protein turnover. This information is especially interesting for emergent and orphan immune and neuroinflammatory diseases.
    • URI
      http://hdl.handle.net/10630/7538
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    Abstract.pdf (247.7Kb)
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    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
     

     

    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA