SD-91 as A Potent and Selective STAT3 Degrader Capable of Achieving Complete and Long-Lasting Tumor Regression.

ABSTRACT: Signal transducer and activator of transcription 3 (STAT3) is an attractive cancer therapeutic target. We report herein our extensive in vitro and in vivo evaluations of SD-91, the product of the hydrolysis of our previously reported STAT3 degrader SD-36. SD-91 binds to STAT3 protein with a high affinity and displays >300-fold selectivity over other STAT family protein members. SD-91 potently and effectively induces degradation of STAT3 protein and displays a high selectivity over other STAT members and >7000 non-STAT proteins in cells. A single administration of SD-91 selectively depletes STAT3 protein in tumor tissues with a persistent effect. SD-91 achieves complete and long-lasting tumor regression in the MOLM-16 xenograft model in mice even with weekly administration. He

SUBMITTER: Zhou H 

PROVIDER: S-EPMC8201759 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature