NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

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carbon C 11 metformin
A radiopharmaceutical tracer containing the anti-diabetic agent metformin, a biguanide and hydrophilic organic cation, and labeled with carbon 11 (11C), used to measure metformin uptake by cancer cells using positron emission tomography (PET). Upon administration of carbon C 11 metformin, the metformin moiety targets and binds to cancer cells; in turn, the compound is taken up by cancer cells. Upon PET, metformin distribution into cancer cells can be visualized, which allows for a prediction of the anti-cancer efficacy of metformin, based on tumor cell uptake. Metformin transport, such as uptake into cancer cells, appears to be correlated with the expression of organic cation transporters (OCT) 1-3, multidrug and toxin extrusion (MATE) 1 and 2, and plasma membrane monoamine transporter (PMAT). OCTs, MATEs and PMAT play a key role in the distribution and excretion of organic cationic compounds. Check for active clinical trials using this agent. (NCI Thesaurus)

Synonym:[11C]-metformin
11C-metformin
carbon-11 metformin