Comparative proteomic and transcriptomic analysis of the impact of androgen stimulation and darolutamide inhibition on prostate cancer cells

ABSTRACT: Androgen receptor (AR) signaling is a major driver and therapy target in prostate cancer. Several inhibitors of AR function are approved for different stages of the disease and their impact on downstream gene transcription has been described. However, the ensuing effects of androgen and anti-androgens at the protein level are less well understood. Here, we focused on the AR inhibitor darolutamide which has recently been approved for non-metastatic castration-resistant prostate cancer. Here we determined the impact of darolutamide, a recently approved AR antagonist which significantly extends progression-free and overall survival in non-metastatic CRPC (31, 32), on the prostate cancer proteome. We first determined the direct binding between darolutamide and the AR in living prostate cancer cells in a label-free context using the cellular high throughput thermal shift assay (CETSA HT). We then generated comprehensive proteomic profiles of prostate cancer cells treated with androgen and darolutamide, and compared them with transcriptomic profiles. We found a generally high concordance between proteomic and transcriptomic data, both on the level of detected expressed genes and their protein products, as well as in terms of the corresponding biological programs. However there were cases where protein and gene expression levels were not regulated in parallel, suggesting an additional post-transcriptional regulation step controlling protein abundance to occur in several instances.

INSTRUMENT(S):

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Epithelial Cell, Cell Culture

DISEASE(S): Prostate Cancer

SUBMITTER: Stefan Maier  

LAB HEAD: Hannes Hahne

PROVIDER: PXD036962 | Pride | 2023-02-17

REPOSITORIES: Pride