What question did this study set out to answer?

The research investigates the role of indole-related metabolites in suppressing the anti-tumor function of CD8+ T cells within the bone marrow of multiple myeloma patients.

December 8, 2025BloodOpen Access

Indole-related metabolites suppress the anti-tumor function of CD8+ T cells in the bone marrow microenvironment of multiple myeloma

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Authors

XJXiaoyun JinCapital Medical University

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Implication

Metabolomic profiling reveals indole-3-acetic acid and indole-3-propionic acid impair CD8+ T cells in multiple myeloma, highlighting a new mechanism of immune suppression.

Key Points

The research investigates the role of indole-related metabolites in suppressing the anti-tumor function of CD8+ T cells within the bone marrow of multiple myeloma patients.
Conducted metabolomic profiling of the bone marrow microenvironment from multiple myeloma patients.
Analyzed CD8+ T cell function and immune checkpoint expression using flow cytometry.
Evaluated the effects of indole derivatives on CAR T cell cytotoxicity in vitro.
Indole-3-acetic acid and indole-3-propionic acid significantly suppress CD8+ T cell activity in the bone marrow.
CD8+ T cells in multiple myeloma display an activated phenotype but impaired function with increased immune checkpoint expression.
Amino acid metabolism pathways are altered in multiple myeloma, contributing to immune evasion.

Cite This Study

Xiaoyun Jin (2025) studied this question.

synapsesocial.com/papers/69362f444fa91c937236d5f8 https://doi.org/10.1182/blood-2025-3933

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Implication

Metabolomic profiling reveals indole-3-acetic acid and indole-3-propionic acid impair CD8+ T cells in multiple myeloma, highlighting a new mechanism of immune suppression.

Indole-related metabolites suppress the anti-tumor function of CD8+ T cells in the bone marrow microenvironment of multiple myeloma

Discussion

Member takes

Implication

Key Points

Cite This Study

Indole-related metabolites suppress the anti-tumor function of CD8+ T cells in the bone marrow microenvironment of multiple myeloma

Discussion

Member takes

Implication

Key Points

Cite This Study

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