A sphingolipid-derived paclitaxel nanovesicle enhances efficacy of combination therapies in triple-negative breast cancer and pancreatic cancer.

ABSTRACT: Taxol and Abraxane, the US Food and Drug Administration-approved paclitaxel (PTX) formulations, have revealed hypersensitivity due to excipients and mediocre efficacy due to insufficient tumor penetration, respectively. Here we developed a sphingolipid-derived PTX nanovesicle (paclitaxome) via covalently conjugating PTX to sphingomyelin, which improved pharmacokinetics and enhanced efficacy in metastatic triple-negative breast cancer and pancreatic cancer female mice and reduced myelosuppression. To bolster tumor penetration and reduce phagocytosis, we engineered a cationization-enabled transcytosis machinery by installing an ultra-pH-sensitive azepane (AZE) probe into paclitaxome and masked nanovesicle surface with a CD47 'self' peptide (CD47p). The resulting CD47p/AZE-paclitaxome synchro

SUBMITTER: Wang Z 

PROVIDER: S-EPMC12559008 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature