» Articles » PMID: 32314873

Prostate Cancer Cell-intrinsic Interferon Signaling Regulates Dormancy and Metastatic Outgrowth in Bone

Abstract

The latency associated with bone metastasis emergence in castrate-resistant prostate cancer is attributed to dormancy, a state in which cancer cells persist prior to overt lesion formation. Using single-cell transcriptomics and ex vivo profiling, we have uncovered the critical role of tumor-intrinsic immune signaling in the retention of cancer cell dormancy. We demonstrate that loss of tumor-intrinsic type I IFN occurs in proliferating prostate cancer cells in bone. This loss suppresses tumor immunogenicity and therapeutic response and promotes bone cell activation to drive cancer progression. Restoration of tumor-intrinsic IFN signaling by HDAC inhibition increased tumor cell visibility, promoted long-term antitumor immunity, and blocked cancer growth in bone. Key findings were validated in patients, including loss of tumor-intrinsic IFN signaling and immunogenicity in bone metastases compared to primary tumors. Data herein provide a rationale as to why current immunotherapeutics fail in bone-metastatic prostate cancer, and provide a new therapeutic strategy to overcome the inefficacy of immune-based therapies in solid cancers.

Citing Articles

Towards understanding cancer dormancy over strategic hitching up mechanisms to technologies.

Yang S, Seo J, Choi J, Kim S, Kuk Y, Park K Mol Cancer. 2025; 24(1):47.

PMID: 39953555 PMC: 11829473. DOI: 10.1186/s12943-025-02250-9.


Elucidating the power of arginine restriction: taming type I interferon response in breast cancer via selective autophagy.

Lamsal A, Andersen S, Johansson I, Desgarnier M, Wolowczyk C, Engedal N Cell Commun Signal. 2024; 22(1):481.

PMID: 39380098 PMC: 11462705. DOI: 10.1186/s12964-024-01858-6.


The complexity of immune evasion mechanisms throughout the metastatic cascade.

Haynes N, Chadwick T, Parker B Nat Immunol. 2024; 25(10):1793-1808.

PMID: 39285252 DOI: 10.1038/s41590-024-01960-4.


Bone niches in the regulation of tumour cell dormancy.

Smith J, Chai R J Bone Oncol. 2024; 47:100621.

PMID: 39157742 PMC: 11326946. DOI: 10.1016/j.jbo.2024.100621.


Grainyhead-like-2, an epithelial master programmer, promotes interferon induction and suppresses breast cancer recurrence.

MacFawn I, Farris J, Pifer P, Margaryan N, Akhter H, Wang L Mol Immunol. 2024; 170:156-169.

PMID: 38692097 PMC: 11106721. DOI: 10.1016/j.molimm.2024.04.012.


References
1.
Sawant A, Deshane J, Jules J, Lee C, Harris B, Feng X . Myeloid-derived suppressor cells function as novel osteoclast progenitors enhancing bone loss in breast cancer. Cancer Res. 2012; 73(2):672-82. PMC: 3548966. DOI: 10.1158/0008-5472.CAN-12-2202. View

2.
Hong M, Sapre N, Phal P, Macintyre G, Chin X, Pedersen J . Percutaneous image-guided biopsy of prostate cancer metastases yields samples suitable for genomics and personalised oncology. Clin Exp Metastasis. 2013; 31(2):159-67. DOI: 10.1007/s10585-013-9617-2. View

3.
Hong M, Macintyre G, Wedge D, Van Loo P, Patel K, Lunke S . Tracking the origins and drivers of subclonal metastatic expansion in prostate cancer. Nat Commun. 2015; 6:6605. PMC: 4396364. DOI: 10.1038/ncomms7605. View

4.
Anders S, Pyl P, Huber W . HTSeq--a Python framework to work with high-throughput sequencing data. Bioinformatics. 2014; 31(2):166-9. PMC: 4287950. DOI: 10.1093/bioinformatics/btu638. View

5.
Jacquelot N, Roberti M, Enot D, Rusakiewicz S, Ternes N, Jegou S . Predictors of responses to immune checkpoint blockade in advanced melanoma. Nat Commun. 2017; 8(1):592. PMC: 5605517. DOI: 10.1038/s41467-017-00608-2. View