Drug intelligence / Profile preview

[68Ga]Ga-DOTA-(1P-PEG4)

Development stage
Preclinical
Lead developer
Peking University
Modality
Small Molecules, Antibody-Radionuclide Conjugates → Antibody Conjugates → Antibody-Based Therapeutics
Administration
Intravenous
01

Overview

[68Ga]Ga-DOTA-(1P-PEG4) is a radiopharmaceutical diagnostic probe designed for positron emission tomography (PET) imaging of prostate cancer. It consists of a prostate-specific membrane antigen (PSMA)-targeting monomeric ligand conjugated to a polyethylene glycol (PEG4) spacer and a DOTA (1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid) chelator, which is radiolabeled with the positron-emitting isotope Gallium-68. The probe specifically targets PSMA, a cell-surface protein that is highly overexpressed in prostate cancer cells. The inclusion of the PEG4 chain is intended to optimize the probe's pharmacokinetics by increasing hydrophilicity and potentially improving tumor-to-background ratios. In preclinical studies, this monomeric version serves as a structural baseline to evaluate the advantages of multivalent (dimeric) PSMA tracers in terms of tumor accumulation and renal clearance.

Other names
68Ga-DOTA-(1P-PEG4)Ga-68 DOTA-PEG4-PSMA monomerGa68 DOTA-PEG4-PSMA monomerGa 68 DOTA-PEG4-PSMA monomer
02

Targets

PSMA (Prostate-specific membrane antigen)

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