Proteomics,Multiomics

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Endogenous androgen receptor proteomic profiling reveals genomic subcomplex involved in prostate tumorigenesis


ABSTRACT: Androgen receptor (AR) is a key player in prostate cancer development and progression. Here we applied immunoprecipitation mass spectrometry of endogenous AR in LNCaP cells to identify components of the AR transcriptional complex. In total, 66 known and novel AR interactors were identified in the presence of synthetic androgen, most of which were critical for AR-driven prostate cancer cell proliferation. A subset of AR interactors required for LNCaP proliferation were profiled using chromatin immunoprecipitation assays followed by sequencing, identifying distinct genomic subcomplexes of AR interaction partners. Interestingly, three major subgroups of genomic subcomplexes were identified, where selective gain of function for AR genomic action in tumorigenesis was found, dictated by FOXA1 and HOXB13. In summary, by combining proteomic and genomic approaches we reveal subclasses of AR transcriptional complexes, differentiating normal AR behavior from the oncogenic state. In this process, the expression of AR interactors has key roles by reprogramming the AR cistrome and interactome in a genomic location-specific manner.

OTHER RELATED OMICS DATASETS IN: PRJNA371800

INSTRUMENT(S): LTQ Orbitrap

ORGANISM(S): Homo Sapiens (human)

TISSUE(S): Cell Culture

SUBMITTER: Liesbeth Hoekman  

LAB HEAD: A. F. Maarten Altelaar

PROVIDER: PXD008056 | Pride | 2017-10-27

REPOSITORIES: Pride

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Publications

Endogenous androgen receptor proteomic profiling reveals genomic subcomplex involved in prostate tumorigenesis.

Stelloo S S   Nevedomskaya E E   Kim Y Y   Hoekman L L   Bleijerveld O B OB   Mirza T T   Wessels L F A LFA   van Weerden W M WM   Altelaar A F M AFM   Bergman A M AM   Zwart W W  

Oncogene 20170918 3


Androgen receptor (AR) is a key player in prostate cancer development and progression. Here we applied immunoprecipitation mass spectrometry of endogenous AR in LNCaP cells to identify components of the AR transcriptional complex. In total, 66 known and novel AR interactors were identified in the presence of synthetic androgen, most of which were critical for AR-driven prostate cancer cell proliferation. A subset of AR interactors required for LNCaP proliferation were profiled using chromatin im  ...[more]

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