Tetrac (Tetraiodothyroacetic acid), a derivative of L-thyroxine (T4), is a thyrointegrin receptor antagonist. Tetrac blocks the actions of T4 and 3,5,3'-triiodo-L-thyronine (T3) at the cell surface receptor for thyroid hormone on integrin αvβ3. Tetra has anti-angiogenic and anti-tumor activities[1][2].

Tetrac (0.01-1 μM; 2-6 d) induces anti-proliferation in HT-29 and HCT116 cells with different K-RAS status[3].Tetrac (0.1 μM; 30 min) inhibits activation of ERK1/2 in HT-29 and HCT116 cells[3].Tetrac (0.1 μM; 24 h) inhibits expression of CCND1 and c-Myc, but promotes expression of CASP2 and THBS1[3]. Cell Proliferation Assay[3] Cell Line: HT-29 and HCT116 cells

Tetrac (35 μg; p.o. for 40 days) inhibits tumor inoculation, growth and integrin expression in mice[4]. Animal Model: Wild-type male Balb/C mice aged 8 weeks are inoculated with 102B16F10 or B16LS9 cells[4]

67-30-1

C14H8I4O4

747.83

Tetrac

DMSO:100 mg/mL (133.72 mM)
Powder: -20°C for 3 years
In solvent: -80°C for 2 years