In a lung tumor mouse model, MiNK-215 depleted FAP+ CAFs, enhanced antigen-specific T-cell infiltration, and promoted durable antitumor immunity without off-target toxicity. These findings were extended to human organoid models of treatment-refractory Microsatellite Stable Colorectal Cancer (MSS-CRC) liver metastases, establishing FAP-CAR-IL-15 iNKT cells as a promising strategy to overcome immunotherapy resistance in solid tumors.
Squaric acid derivatization synergistically elevates affinity, hydrophilicity, and intratumoral residence while preserving safety, establishing 68Ga/177Lu-FAP2286-SA as a clinically translatable, next-generation theranostic pair for FAP-positive malignancies.
SPECT/CT imaging revealed obvious uptake in tumors with high FAP expression (U87MG, HT-1080-FAP and HT-29) with a clean background, and no visualization was observed in the tumors of the blocking group (U87MG block, HT-1080-FAP block and HT-29 block) or the tumors with low FAP expression (HT-1080), indicating that the uptake of [99mTc]Tc-(tricine/TPPTS)-L in the tumors had high FAP specificity. Therefore, [99mTc]Tc-(tricine/TPPTS)-L is expected to become a potential tumor molecular probe for clinical application.
177Lu-FAP-2286 demonstrated good feasibility and safety in treating FAP-positive gastrointestinal tumors, resulting in disease stabilization in a subset of patients.