ArticleBlood advances2026
Elevated lactate in AML bone marrow contributes to macrophage polarization via GPR81 signaling.
Article in Blood advances, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Mitochondria transfer via tunneling nanotubes drives macrophage immunosuppression and metabolic reprogramming in pediatric AML.Leukemia · 2026Article
- Lactate Signal: Modulator of Cellular Energy Production and Anabolism.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Review
- Review
- Integrative profiling of lactylation reveals prognostic biomarkers and an immunosuppressive niche in acute myeloid leukemia.Frontiers in immunology · 2026Article
- Metabolic reprogramming in tumor-associated cells of hematologic malignancies: mechanisms, crosstalk networks, and therapeutic implications in the tumor microenvironment.Frontiers in immunology · 2026Review
- Reframing small cell lung cancer: therapeutic lessons from hematologic malignancies.Frontiers in oncology · 2026Review
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
abstractInteractions between acute myeloid leukemia (AML) and the bone marrow microenvironment (BMME) are critical to leukemia progression and chemoresistance. In the solid tumor microenvironment, altered metabolite levels contribute to cancer progression. We performed a metabolomic analysis of bone marrow serum from patients with AML, revealing increased metabolites compared to age- and sex-matched controls. The most highly elevated metabolite in the AML BMME was lactate. Lactate signaling in solid tumors induces immunosuppressive tumor-associated macrophages and correlates with poor prognosis. This has not yet been studied in the leukemic BMME. Herein, we describe the role of lactate in the polarization of leukemia-associated macrophages (LAMs). Using a murine AML model of blast crisis chronic myelogenous leukemia, we characterize the suppressive phenotype of LAMs through surface markers, transcriptomics, and cytokine profiling. Mice genetically lacking GPR81, the extracellular lactate receptor, were then used to demonstrate GPR81 signaling as a mechanism of both the polarization of LAMs and the direct support of leukemia cells. Furthermore, elevated lactate diminished the function of hematopoietic progenitors and reduced stromal support for normal hematopoiesis. We report microenvironmental lactate as a mechanism of AML-induced immunosuppression and leukemic progression, thus identifying GPR81 signaling as an exciting and novel therapeutic target for treating this devastating disease.
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