Dissecting the immune suppressive human prostate tumor microenvironment via integrated single-cell and spatial...

Area of Science:

• Oncology
• Immunology
• Genomics

Background:

• Prostate cancer recurrence and metastasis are significant clinical challenges.
• The underlying mechanisms driving immune escape and tumor progression remain poorly understood.
• Effective treatment strategies for high-risk prostate cancer require a deeper insight into the tumor microenvironment.

Purpose of the Study:

• To comprehensively characterize the tumor microenvironment (TME) in localized prostate cancer.
• To compare the TME of prostate tumors with adjacent normal tissues and healthy controls.
• To identify key cellular and molecular components contributing to immune suppression and tumor progression.

Main Methods:

• Single-cell RNA sequencing (scRNA-seq) for gene expression analysis.
• High-resolution spatial transcriptomics to map cellular architecture.
• Ligand-receptor interaction analysis to infer cell-to-cell communication.

Main Results:

• Identified an immune-suppressive TME associated with suppressive myeloid cells and exhausted T-cells.
• Observed high stromal angiogenic activity within the tumor microenvironment.
• Revealed tumor context-dependent alterations in gene expression and cell-cell interactions.

Conclusions:

• The prostate tumor microenvironment exhibits distinct immune-suppressive characteristics.
• Stromal angiogenic activity and specific immune cell populations contribute to tumor progression.
• This study provides a detailed resource for understanding prostate cancer TME and cell interactions, aiding future therapeutic development.