Suppression of PARP1 enhances PTEN mRNA therapy in castration-resistant prostate cancer by glycolysis disruption.

ABSTRACT: Current treatments for prostate cancer (PC) inevitably lead to the development of resistance to androgen deprivation therapy, resulting in the emergence of castration-resistant prostate cancer (CRPC), which is currently considered incurable. In this study, we discovered that the loss of phosphatase and tensin homolog (PTEN) function, in combination with elevated poly(ADP-ribose) polymerase 1 (PARP1) expression, significantly shortens the survival of PC patients. Motivated by this finding, we developed an RNA-based therapeutic agent consisting of PARP1-targeting small interfering RNA (siRNA) (siPARP1) and PTEN-expressing mRNA (mPTEN), which were co-encapsulated in an ionizable lipid nanoparticle, named mPsiP@miLAND. Both siPARP1 and mPTEN were shown to individually attenuate tumor cell grow

SUBMITTER: Hu B 

PROVIDER: S-EPMC12905993 | biostudies-literature | 2026 Mar

REPOSITORIES: biostudies-literature