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Träfflista för sökning "WFRF:(Armando Natalia G.) srt2:(2015-2019)"

Search: WFRF:(Armando Natalia G.) > (2015-2019)

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  • Szalai, Alan M., et al. (author)
  • A fluorescence nanoscopy marker for corticotropin-releasing hormone type 1 receptor : computer design, synthesis, signaling effects, super-resolved fluorescence imaging, and in situ affinity constant in cells
  • 2018
  • In: Physical Chemistry, Chemical Physics - PCCP. - : Royal Society of Chemistry. - 1463-9076 .- 1463-9084. ; 10:46, s. 29212-29220
  • Journal article (peer-reviewed)abstract
    • Class B G protein-coupled receptors (GPCRs) are involved in a variety of human pathophysiological states. These groups of membrane receptors are less studied than class A GPCRs due to the lack of structural information, delayed small molecule drug discovery, and scarce fluorescence detection tools available. The class B corticotropin-releasing hormone type 1 receptor (CRHR1) is a key player in the stress response whose dysregulation is critically involved in stress-related disorders: psychiatric conditions (i.e. depression, anxiety, and addictions), neuroendocrinological alterations, and neurodegenerative diseases. Here, we present a strategy to label GPCRs with a small fluorescent antagonist that permits the observation of the receptor in live cells through stochastic optical reconstruction microscopy (STORM) with 23 nm resolution. The marker, an aza-BODIPY derivative, was designed based on computational docking studies, then synthesized, and finally tested in biological cells. Experiments on hippocampal neurons demonstrate antagonist effects in similar concentrations as the well-established antagonist CP-376395. A quantitative analysis of two color STORM images enabled the determination of the binding affinity of the new marker in the cellular environment.
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