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- W4367678112 abstract "<div>Abstract<p>α-Fetoprotein (AFP) is expressed by stem-like and poor outcome hepatocellular cancer tumors and is a clinical tumor biomarker. AFP has been demonstrated to inhibit dendritic cell (DC) differentiation and maturation and to block oxidative phosphorylation. To identify the critical metabolic pathways leading to human DC functional suppression, here, we used two recently described single-cell profiling methods, scMEP (single-cell metabolic profiling) and SCENITH (single-cell energetic metabolism by profiling translation inhibition). Glycolytic capacity and glucose dependence of DCs were significantly increased by tumor-derived, but not normal cord blood–derived, AFP, leading to increased glucose uptake and lactate secretion. Key molecules in the electron transport chain in particular were regulated by tumor-derived AFP. These metabolic changes occurred at mRNA and protein levels, with negative impact on DC stimulatory capacity. Tumor-derived AFP bound significantly more polyunsaturated fatty acids (PUFA) than cord blood–derived AFP. PUFAs bound to AFP increased metabolic skewing and promoted DC functional suppression. PUFAs inhibited DC differentiation <i>in vitro</i>, and ω-6 PUFAs conferred potent immunoregulation when bound to tumor-derived AFP. Together, these findings provide mechanistic insights into how AFP antagonizes the innate immune response to limit antitumor immunity.</p>Significance:<p>α-Fetoprotein (AFP) is a secreted tumor protein and biomarker with impact on immunity. Fatty acid–bound AFP promotes immune suppression by skewing human dendritic cell metabolism toward glycolysis and reduced immune stimulation.</p></div>" @default.
- W4367678112 created "2023-05-03" @default.
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- W4367678112 date "2023-05-02" @default.
- W4367678112 modified "2023-10-14" @default.
- W4367678112 title "Data from Polyunsaturated Fatty Acid–Bound α-Fetoprotein Promotes Immune Suppression by Altering Human Dendritic Cell Metabolism" @default.
- W4367678112 doi "https://doi.org/10.1158/0008-5472.c.6626123" @default.
- W4367678112 hasPublicationYear "2023" @default.
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