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Related Concept Videos

Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
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Related Experiment Video

Updated: Mar 14, 2026

Murine Lymphocyte Labeling by 64Cu-Antibody Receptor Targeting for In Vivo Cell Trafficking by PET/CT
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Copper-64 labeled liposomes for imaging bone marrow.

Sang-Gyu Lee1, Kishore Gangangari2, Teja Muralidhar Kalidindi3

  • 1Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY; Molecular Pharmacology and Chemistry Program, Memorial Sloan Kettering Cancer Center, New York, NY.

Nuclear Medicine and Biology
|October 4, 2016
PubMed
Summary
This summary is machine-generated.

Researchers developed novel copper-64 labeled liposomes for bone marrow imaging. These liposomes show high accumulation in bone marrow, offering an efficient PET imaging agent for this tissue.

Keywords:
Bone marrowCopper-64DOTA-Bn-DSPELiposomePet

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Area of Science:

  • Nuclear medicine
  • Nanotechnology
  • Biomedical imaging

Background:

  • Bone marrow is a critical tissue composed of various cell types.
  • Current positron emission tomography (PET) agents like [18F]-FLT image marrow proliferation but not the entire compartment.
  • There is a need for specific particle-based PET imaging agents for bone marrow.

Purpose of the Study:

  • To develop and evaluate a novel copper-64 labeled liposomal formulation as a PET imaging agent for bone marrow.
  • To assess the targeting efficiency and accumulation of these liposomes in bone marrow.

Main Methods:

  • Optimized liposomal formulations with specific lipid compositions (succinyl PE, DSPC, cholesterol, mPEG-DSPE) and sizes (90nm, 140nm) were prepared.
  • Liposomes were doped with DOTA-Bn-DSPE for stable copper-64 (64Cu) incorporation.
  • PET imaging and biodistribution studies were conducted in mice.

Main Results:

  • 90nm 64Cu-labeled liposomes showed high bone marrow accumulation (15.18±3.69%ID/g at 24h).
  • Compared to Doxil-like liposomes, the 90nm particles demonstrated significantly higher uptake in bone marrow (14.22±8.07%ID/g vs. 2.23±1.00%ID/g).
  • Tumor uptake was low for both formulations, indicating bone marrow specificity.

Conclusions:

  • The developed 64Cu-labeled liposomes effectively target bone marrow.
  • These novel liposomes demonstrate high efficiency and specificity, serving as promising PET imaging agents for bone marrow visualization.