Radiolabeled iodine isotope

"Radiolabeled iodine isotope" most commonly refers to radioactive isotopes of iodine, such as Iodine-131 (I-131), used in nuclear medicine for diagnosis and treatment, primarily in thyroid disease (e.g., hyperthyroidism and thyroid cancer). I-131 is actively transported into thyroid cells via the sodium-iodide symporter, where its beta and gamma emissions can selectively destroy thyroid tissue or metastatic thyroid cancer due to the organ's natural iodine uptake [1][2][3][4][5][6][7]. "Radiolabeled iodine isotope" is not itself a receptor, enzyme, or typical therapeutic molecular target, but a radioactive molecule acting as a radiopharmaceutical agent or tracer.\n\n**Key clarifications:**\n- It is not a molecular target. It is a radiopharmaceutical agent, not a biological receptor, transporter, enzyme, or drug-binding macromolecule [2][3][4][7].\n- Best canonical form: For structured data, the canonical target should specify "Sodium-iodide symporter" for uptake, or "Thyroid tissue" as the physiological target, but not "radiolabeled iodine isotope" itself.\n- Common agents: Iodine-131 (I-131) is the radiolabeled iodine isotope most frequently used for therapy; Iodine-123 (I-123) and Iodine-125 (I-125) are used more for diagnosis or imaging [3][5][4].\n- If the query requires target information for a molecule that mediates the biological effects of radiolabeled iodine isotope, the preferred structured target would be "Sodium/iodide symporter (NIS)" or "Thyroid stimulating hormone receptor" in indirect contexts.\n\n**Summary:**\n"Radiolabeled iodine isotope" is not a canonical molecular target but a therapeutic/diagnostic agent. It is not appropriate as a biological target entry; instead, refer to the agent most often associated (e.g., Iodine-131), and list the appropriate protein or tissue it targets in biology (e.g., sodium-iodide symporter or thyroid gland). The query is best flagged as **is_incorrect: true** for use as a molecular target entry.

Other names

Iodine-131I-131Radioactive iodineRadioiodineSodium iodide I-131