Related Experiment Video
Updated: Feb 14, 2026
07:16
Isolation of Cancer Stem Cells From Human Prostate Cancer Samples
Published on: March 14, 2014
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Prostate Cancer: Dissecting Novel Immunosuppressive Mechanisms Through Context-Specific Transcriptomic Programs and
Pedro Reyes Martinez1,2,3, Erick Sierra Diaz2, Fabiola Solorzano Ibarra4
1Doctorado en Ciencias Biomédicas, Departamento de Fisiología, Centro Universitario de Ciencias de la Salud (CUCS), Universidad de Guadalajara, Guadalajara 44350, Mexico.
International Journal of Molecular Sciences
|February 13, 2026
Summary
Prostate cancer immunotherapy resistance stems from distinct immune programs in circulation versus tumors. This study reveals circulating inflammation and tumor immune quiescence, suggesting new myeloid and RNA-based treatment strategies.
Area of Science:
- Immunology
- Oncology
- Molecular Biology
Background:
- Prostate cancer is largely resistant to immunotherapy.
- Immune landscapes differ significantly between tumor microenvironments and patient circulation.
- Understanding these context-specific immune programs is crucial for developing effective cancer therapies.
Purpose of the Study:
- To characterize context-specific immunoregulation in prostate cancer by integrating multi-omics data.
- To identify key molecular players and pathways driving immune differences between blood and tumor samples.
- To explore the role of long non-coding RNAs (lncRNAs) in prostate cancer immune evasion.
Main Methods:
- Bulk RNA sequencing of patient peripheral mononuclear cells (PBMCs), primary prostate tissue, and recurrent tumors.
- Multiparameter flow cytometry and unsupervised UMAP/T-REX mapping.
- De novo discovery and structural modeling of long non-coding RNAs (lncRNAs).
Main Results:
- Patient PBMCs exhibit a pro-inflammatory profile with neutrophil-like myeloid-derived suppressor cells (MDSCs).
- Prostate tumors show suppressed chemokines and innate immunity but upregulated cancer-associated lncRNAs.
- Recurrent tumors display epithelial-mesenchymal transition and metabolic changes with distinct lncRNA signatures, while non-recurrent tumors maintain epithelial and stress-response networks.
Conclusions:
- Circulating inflammatory rewiring in prostate cancer is linked to immune suppressor cell expansion.
- Tumor immune quiescence is associated with non-coding RNA regulatory programs.
- Integrated myeloid- and RNA-directed strategies offer promising avenues for future cancer research and therapy.
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