Spatial metabolic heterogeneity shapes CD8⁺ T cell function in cancer

Area of Science:

• Oncology
• Immunology
• Metabolomics

Background:

• Tumors are complex ecosystems with spatial metabolic heterogeneity.
• Metabolic niches influence immune cell function, T cell infiltration, and immunotherapy response.
• Spatial metabolic heterogeneity is linked to immune exclusion, T cell dysfunction, and treatment resistance.

Purpose of the Study:

• To review how metabolic zonation affects CD8+ T cell function in tumors.
• To highlight the role of spatial metabolomics in understanding tumor-immune interactions.
• To discuss therapeutic strategies targeting T cell metabolic fitness.

Main Methods:

• Spatial metabolomics, particularly mass spectrometry imaging.
• Integration with transcriptomic, proteomic, and imaging techniques.
• In situ mapping of metabolites within intact tumor tissues.

Main Results:

• Metabolic zonation significantly shapes CD8+ T cell function in primary and metastatic tumors.
• Localized metabolic programs are associated with T cell exhaustion, reduced motility, and altered immune cell composition.
• Spatial metabolomics provides insights into tumor metabolism and its impact on immune interactions.

Conclusions:

• Spatial metabolic heterogeneity is a critical factor in tumor immunology and immunotherapy outcomes.
• Targeting T cell metabolic fitness through modulation and engineering holds therapeutic potential.
• Spatial metabolomics offers promise for biomarker discovery in precision immunometabolic oncology.