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Review the dynamic differentiation of exhausted CD8+ T cells in the tumor immune microenvironment and evaluate combination immunotherapy approaches.

February 2, 2021Frontiers in ImmunologyOpen Access

Exhausted CD8+T Cells in the Tumor Immune Microenvironment: New Pathways to Therapy

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Review the dynamic differentiation of exhausted CD8+ T cells in the tumor immune microenvironment and evaluate combination immunotherapy approaches.
Synthesized recent findings on the biological transitions of CD8+ T cells from activation to progenitor and terminal exhaustion.
Evaluated mechanisms underlying tumor responsiveness and resistance to immune checkpoint inhibitor monotherapies.
Persistent antigenic stimulation progressively drives CD8+ T cells from a functional activated state into progenitor and terminally exhausted subsets with reduced antitumor capacity.
Clinical response to immune checkpoint inhibitors requires expanding progenitor exhausted T cells, whereas excessive tumor burden rapidly depletes this progenitor pool.
Overcoming monotherapy resistance necessitates combination strategies that reduce tumor load and enhance or replenish the progenitor T cell population.

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Implication

Review outlines stages of CD8+ T cell exhaustion in tumors, suggesting combination therapies targeting progenitor pools may overcome immunotherapy resistance.

Cite This Study

Jiang et al. (2021) studied this question.

synapsesocial.com/papers/69dc1d314ee46a2379b64f5f https://doi.org/10.3389/fimmu.2020.622509

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Implication

Review outlines stages of CD8+ T cell exhaustion in tumors, suggesting combination therapies targeting progenitor pools may overcome immunotherapy resistance.

Exhausted CD8+T Cells in the Tumor Immune Microenvironment: New Pathways to Therapy

Key Points

Discussion

Implication

Cite This Study

Exhausted CD8+T Cells in the Tumor Immune Microenvironment: New Pathways to Therapy

Key Points

Discussion

Implication

Cite This Study

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