Novel therapeutic strategy targeting STMN1 using chlorambucil-conjugated pyrrole-imidazole polyamide in small cell lung cancer.

ABSTRACT: Small cell lung cancer (SCLC) is aggressive, with limited treatment progress for decades. Stathmin 1 (STMN1) is a cytoplasmic phosphorylated protein that is specific to cancerous tissues including SCLC and is associated with malignancy. Pyrrole-imidazole polyamide (PIP) compounds decrease gene expression by binding to specific DNA sites and disturbing RNA transcription. In this study, we synthesized a novel chlorambucil-conjugated PIP compound targeting both the STMN1 promoter and STMN1 DNA sequences (Chb-STMN1 PIP) to evaluate its therapeutic efficacy against SCLC. We examined the expression of STMN1 in surgically resected tissues and cell line database. Suppression of STMN1 by Chb-STMN1 PIP was analyzed using RT-PCR, WB, and CAGE-seq in vitro. The anti-tumor effects of Chb-STMN1 PIP were

SUBMITTER: Yoshikawa R 

PROVIDER: S-EPMC12765969 | biostudies-literature | 2026 Mar

REPOSITORIES: biostudies-literature