Targeting RET Kinase in Neuroendocrine Prostate Cancer.
Animals
Carcinoma, Neuroendocrine
/ drug therapy
Cell Line, Tumor
Gene Expression Regulation, Neoplastic
/ drug effects
Gene Knockdown Techniques
Heterocyclic Compounds, 4 or More Rings
/ administration & dosage
Humans
Male
Mice
PC-3 Cells
Phosphorylation
Prostatic Neoplasms
/ drug therapy
Proteomics
/ methods
Proto-Oncogene Proteins c-ret
/ genetics
Receptors, Androgen
/ metabolism
Up-Regulation
/ drug effects
Xenograft Model Antitumor Assays
Journal
Molecular cancer research : MCR
ISSN: 1557-3125
Titre abrégé: Mol Cancer Res
Pays: United States
ID NLM: 101150042
Informations de publication
Date de publication:
08 2020
08 2020
Historique:
received:
23
12
2019
revised:
01
04
2020
accepted:
19
05
2020
pubmed:
29
5
2020
medline:
3
7
2021
entrez:
29
5
2020
Statut:
ppublish
Résumé
The increased treatment of metastatic castration-resistant prostate cancer (mCRPC) with second-generation antiandrogen therapies (ADT) has coincided with a greater incidence of lethal, aggressive variant prostate cancer (AVPC) tumors that have lost dependence on androgen receptor (AR) signaling. These AR-independent tumors may also transdifferentiate to express neuroendocrine lineage markers and are termed neuroendocrine prostate cancer (NEPC). Recent evidence suggests kinase signaling may be an important driver of NEPC. To identify targetable kinases in NEPC, we performed global phosphoproteomics comparing several AR-independent to AR-dependent prostate cancer cell lines and identified multiple altered signaling pathways, including enrichment of RET kinase activity in the AR-independent cell lines. Clinical NEPC patient samples and NEPC patient-derived xenografts displayed upregulated RET transcript and RET pathway activity. Genetic knockdown or pharmacologic inhibition of RET kinase in multiple mouse and human models of NEPC dramatically reduced tumor growth and decreased cell viability. Our results suggest that targeting RET in NEPC tumors with high RET expression could be an effective treatment option. Currently, there are limited treatment options for patients with aggressive neuroendocrine prostate cancer and none are curative. IMPLICATIONS: Identification of aberrantly expressed RET kinase as a driver of tumor growth in multiple models of NEPC provides a significant rationale for testing the clinical application of RET inhibitors in patients with AVPC.
Identifiants
pubmed: 32461304
pii: 1541-7786.MCR-19-1245
doi: 10.1158/1541-7786.MCR-19-1245
pmc: PMC7415621
mid: NIHMS1597949
doi:
Substances chimiques
AD80 compound
0
AR protein, human
0
Heterocyclic Compounds, 4 or More Rings
0
Receptors, Androgen
0
Proto-Oncogene Proteins c-ret
EC 2.7.10.1
RET protein, human
EC 2.7.10.1
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
1176-1188Subventions
Organisme : NCI NIH HHS
ID : P30 CA077598
Pays : United States
Organisme : NIGMS NIH HHS
ID : T32 GM135141
Pays : United States
Organisme : NCI NIH HHS
ID : K99 CA218731
Pays : United States
Organisme : NIGMS NIH HHS
ID : T32 GM008339
Pays : United States
Organisme : NCI NIH HHS
ID : R00 CA218731
Pays : United States
Organisme : NCI NIH HHS
ID : P01 CA163227
Pays : United States
Organisme : NCI NIH HHS
ID : P50 CA097186
Pays : United States
Organisme : NCATS NIH HHS
ID : UL1 TR002494
Pays : United States
Informations de copyright
©2020 American Association for Cancer Research.
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