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Updated: Aug 26, 2025

In Vivo Immunogenicity Screening of Tumor-Derived Extracellular Vesicles by Flow Cytometry of Splenic T Cells
Published on: September 23, 2021
Tumor Derived Extracellular Vesicles Modulate Gene Expression in T cells
Alejandro Pando1, Christoph Schorl2, Loren D Fast3
1Warren Alpert School of Medicine at Brown University and Division of Hematology/Oncology, Rhode Island Hospital, Providence, RI, United States; Center for Biomedical Engineering, Brown University, Providence, RI, United States.
Acute myeloid leukemia (AML) derived extracellular vesicles (EVs) alter gene expression in T cells, impacting immune regulation. CD8+ T cells showed significant changes in proliferation and differentiation pathways due to AML EVs.
Area of Science:
- Immunology
- Cell Biology
- Oncology
Background:
- Extracellular vesicles (EVs) are released by cells and carry various biomolecules.
- T cells are crucial for adaptive immunity and cancer immunotherapy.
- Tumor-derived EVs can influence host immune responses.
Purpose of the Study:
- To investigate how acute myeloid leukemia (AML)-derived EVs affect gene expression in different T cell populations.
- To understand the immunomodulatory impact of AML EVs on T cells.
Main Methods:
- Analysis of gene expression changes in CD8+, CD4+, and CD4+CD39+ T cells upon exposure to AML-derived EVs.
- Gene ontology analysis to identify affected pathways.
Main Results:
- AML-derived EVs significantly altered gene expression in all three T cell populations.
- Transcripts related to major immunoregulatory pathways were affected.
- CD8+ T cells exhibited more extensive modulation, with changes in proliferation and differentiation genes.
Conclusions:
- AML-derived EVs possess potent immunomodulatory capabilities.
- These EVs can significantly alter T cell function, particularly affecting CD8+ T cell proliferation and differentiation.
- Understanding these interactions is vital for developing novel AML immunotherapies.
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