heptamethine carbocyanine dye-DOTA conjugate

Heptamethine carbocyanine dye-DOTA conjugates are a class of tumor-targeting agents that combine a near-infrared fluorescent (NIRF) heptamethine carbocyanine dye with the chelator DOTA (dodecane tetraacetic acid), often for radiolabeling with therapeutic or diagnostic radionuclides. These agents exploit the preferential accumulation of heptamethine dyes in malignant cells due to mechanisms such as organic anion transporting polypeptide (OATP)-mediated uptake and hypoxia-inducible factor 1α activity. The DOTA moiety enables stable chelation of radionuclides like lutetium-177 or gallium-68 for targeted radiotherapy or imaging. In preclinical models, these conjugates demonstrate high tumor specificity, prolonged retention at tumor sites, and effective inhibition of tumor growth with minimal toxicity to normal tissues. They are being developed primarily for cancer therapy and molecular imaging applications[1][2][5].

Other names

heptamethine cyanine dye-DOTA conjugateDOTA-heptamethine carbocyanine dye conjugate