PSMA I&T is an effective inhibitor of prostate-specific membrane antigen (PSMA). PSMA I&T can be used for SPECT/CT imaging and radionuclide studies in triple-negative breast cancer and prostate cancer (PCa).
PSMA I&T has high specificity for PSMA-expressing PCa cells, xenografted PCa, and in vitro kidneys, with equilibrium binding constants Kd of 3.9 nM and 5.6 nM for LNCaP and LS174T-PSMA, respectively[1].
PSMA I&T (0.1-1 nM, intravenous injection, single dose) shows specific accumulation in mouse xenografts, kidneys, spleens, lungs, salivary glands, and adrenal glands[1].
References:
[1]. Chatalic KL, et al. Towards Personalized Treatment of Prostate Cancer: PSMA I&T, a Promising Prostate-Specific Membrane Antigen-Targeted Theranostic Agent. Theranostics. 2016 Apr 12;6(6):849-61.
[2]. Amelie Heesch, et al. The prostate-specific membrane antigen holds potential as a vascular target for endogenous radiotherapy with [177Lu]Lu-PSMA-I&T for triple-negative breast cancer. Breast Cancer Res. 2024 Feb 20;26(1):30.