Thio-2 Inhibits Key Signaling Pathways Required for the Development and Progression of Castration-resistant Prostate Cancer.
Date
2024-06-04ICR Author
Author
Neeb, A
Figueiredo, I
Bogdan, D
Cato, L
Stober, J
Jiménez-Vacas, JM
Gourain, V
Lee, II
Seeger, R
Muhle-Goll, C
Gurel, B
Welti, J
Nava Rodrigues, D
Rekowski, J
Qiu, X
Jiang, Y
Di Micco, P
Mateos, B
Bielskutė, S
Riisnaes, R
Ferreira, A
Miranda, S
Crespo, M
Buroni, L
Ning, J
Carreira, S
Bräse, S
Jung, N
Gräßle, S
Swain, A
Salvatella, X
Plymate, SR
Al-Lazikani, B
Long, HW
Yuan, W
Brown, M
Cato, ACB
de Bono, JS
Sharp, A
Type
Journal Article
Metadata
Show full item recordAbstract
Therapies that abrogate persistent androgen receptor (AR) signaling in castration-resistant prostate cancer (CRPC) remain an unmet clinical need. The N-terminal domain of the AR that drives transcriptional activity in CRPC remains a challenging therapeutic target. Herein we demonstrate that BCL-2-associated athanogene-1 (BAG-1) mRNA is highly expressed and associates with signaling pathways, including AR signaling, that are implicated in the development and progression of CRPC. In addition, interrogation of geometric and physiochemical properties of the BAG domain of BAG-1 isoforms identifies it to be a tractable but challenging drug target. Furthermore, through BAG-1 isoform mouse knockout studies, we confirm that BAG-1 isoforms regulate hormone physiology and that therapies targeting the BAG domain will be associated with limited "on-target" toxicity. Importantly, the postulated inhibitor of BAG-1 isoforms, Thio-2, suppressed AR signaling and other important pathways implicated in the development and progression of CRPC to reduce the growth of treatment-resistant prostate cancer cell lines and patient-derived models. However, the mechanism by which Thio-2 elicits the observed phenotype needs further elucidation as the genomic abrogation of BAG-1 isoforms was unable to recapitulate the Thio-2-mediated phenotype. Overall, these data support the interrogation of related compounds with improved drug-like properties as a novel therapeutic approach in CRPC, and further highlight the clinical potential of treatments that block persistent AR signaling which are currently undergoing clinical evaluation in CRPC.
Collections
Subject
Male
Prostatic Neoplasms, Castration-Resistant
Humans
Animals
Mice
Signal Transduction
Disease Progression
Receptors, Androgen
Cell Line, Tumor
DNA-Binding Proteins
Transcription Factors
Cell Proliferation
Xenograft Model Antitumor Assays
Gene Expression Regulation, Neoplastic
Research team
Cancer Biomarkers
Development & Cancer
Computational Biology
PrCa Targeted Therapy
Translational Therapeutic
Language
eng
Date accepted
2024-02-22
License start date
2024-06-04
Citation
Molecular Cancer Therapeutics, 2024, 23 (6), pp. 791 - 808
Publisher
AMER ASSOC CANCER RESEARCH