IBIOBA - MPSP   22718
INSTITUTO DE INVESTIGACION EN BIOMEDICINA DE BUENOS AIRES - INSTITUTO PARTNER DE LA SOCIEDAD MAX PLANCK
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
CRH signals through a B-Raf-associated complex to induce a biphasic ERK1/2 activation in mouse hippocampal cells
Autor/es:
INDA, C.; BONFIGLIO, J.J.; MACCARRONE G.; TURCK, C. W.; HOLSBOER, F.; ARZT, E.; SILBERSTEIN, S.
Lugar:
Buenos Aires
Reunión:
Simposio; Workshop Fronteras en Biociencia, organizado por el Ministerio de Ciencia, Tecnología e Innovación Productiva de la República Argentina y la Sociedad Max Planck.; 2012
Institución organizadora:
, organizado por el Ministerio de Ciencia, Tecnología e Innovación Productiva de la República Argentina y la Sociedad Max Planck
Resumen:
Corticotropin-releasing hormone (CRH) plays a key role in the adjustment
of neuro-endocrine, autonomic, and behavioral adap-tations to stress. CRH is
the major driver of the hypothalamic-pituitary-adrenal axis, but it is also
widely distributed in extrahypo-thalamic circuits where it functions as
neuromodulator, coordinating many humoral and behavioral aspects of the stress
res-ponse. CRH exerts its actions by two G-protein-coupled receptors, CRH
receptor 1 (CRHR1) and CRH receptor 2 (CRHR2), with differential anatomical
distribution and ligand affinity. CRH is a high affinity ligand for CRHR1, and
the CRH/CRHR1 system dysfunction in limbic structures has been implicated in
behavioral alterations, cog-nitive impairments, and emotional respon-ses that
are typical of depression and anxiety disorders. The aim of our work is to
elucidate mole-cular mechanisms and cellular components involved in CRH
signaling which may have implications for the understanding of the
physiological function of the hormone in the central nervous system. Given that
the signaling pathways triggered by CRH depend on cellular context and that the
mechanisms involved in hippocampal neurons are not known, we carried out our
studies in the immortalized mouse hippo-campal cell line HT22, stably
transfected with murine receptor CRHR1 (HT22-CRHR1).