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Related Concept Videos

Brain Imaging01:14

Brain Imaging

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
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Related Experiment Video

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Positron Emission Tomography Using 64-Copper as a Tracer for the Study of Copper-Related Disorders
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Imaging Copper Levels during Life in the Brain and beyond Using a Fluorescent Copper Sensor with Multimodal Capacity.

Liam D Adair1,2, Benjamin G Trist3,4, Marcus E Graziotto1

  • 1School of Chemistry, The University of Sydney, Sydney, NSW 2006, Australia.

Chemical & Biomedical Imaging
|October 31, 2025
PubMed
Summary

Researchers developed a novel fluorescent sensor, F-NpCu1, to measure copper levels in living cells and tissues. This tool shows promise for diagnosing and treating neurological disorders linked to copper imbalance.

Keywords:
braincopperin vivo imagingintravital microscopyneurologicalsensor

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Area of Science:

  • Neuroscience
  • Biochemistry
  • Medical Imaging

Background:

  • Copper is vital for central nervous system (CNS) development and function.
  • Imbalances in copper levels are linked to severe neurological disorders.
  • Current methods for measuring in vivo copper are limited, hindering diagnosis and treatment monitoring.

Purpose of the Study:

  • To develop and characterize a novel fluorescent sensor for in vivo copper measurement.
  • To assess the sensor's utility in diagnosing copper imbalance disorders and monitoring treatments.
  • To pave the way for clinical application in humans, including CNS imaging.

Main Methods:

  • Synthesis and characterization of a fluorine-labeled naphthalimide copper sensor (F-NpCu1).
  • Evaluation of sensor selectivity, stability, and toxicity in biological systems.
  • Demonstration of F-NpCu1's ability to detect copper in living cells, tissue sections, and mouse brains using fluorescence microscopy.
  • Assessment of blood-brain barrier permeability and application in tracking copper changes during therapy in vivo.

Main Results:

  • F-NpCu1 is a stable, selective fluorescent sensor for copper.
  • The sensor is nontoxic and effective in visualizing copper in various biological samples.
  • F-NpCu1 penetrates the blood-brain barrier and detects therapeutic changes in brain copper levels in mice.
  • Copper binding induces covalent linkage between the sensor and cellular proteins.

Conclusions:

  • F-NpCu1 is a promising tool for in vivo copper measurement, particularly in the CNS.
  • The sensor's properties support its potential as a diagnostic and monitoring agent for copper-related neurological disorders.
  • Further development, including radiolabeling for PET imaging, is underway for clinical translation.