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December 8, 2025BloodOpen Access

Title: Hacs1 is a myeloma immunosuppressor driving pro-tumorigenic myelopoiesis and myeloid cell differentiation through MS4A3/IL3/GM-CSF signaling

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Authors

RQRui QuDXDong XuXLXiaoyuan Liu

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Overview

Observational analysis shows Hacs1 regulates T cell activity and myeloid derived suppressor cells in multiple myeloma mice, suggesting its role in treatment resistance.

Key Points

  • Hacs1 deficiency enhances myelopoiesis, shown by increased T cell dysfunction and myeloid derived suppressor cells.
  • Key evidence includes upregulated PD-L1 expression associated with Hacs1-/- bone marrow in multiple myeloma models.
  • Assessment using Hacs1-/- mouse model demonstrates its regulatory role in T cell responses and myeloid cell differentiation.
  • Findings point to Hacs1 as a crucial factor in creating an immunosuppressive environment in multiple myeloma.

Cite This Study

Qu et al. (2025) studied this question.

synapsesocial.com/papers/69362f3d4fa91c937236d50ahttps://doi.org/10.1182/blood-2025-7480
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  4. 4HMGA1 chromatin regulators drive transcriptional networks involved in megakaryocyte expansion, fibrosis, and sensitivity to interferon signaling in JAK2-V617F MPN2025
  5. 5AML blasts and monocytic myeloid-derived suppressor cells (M-MDSC) inhibit human mucosal-associated invariant t (MAIT) cells activation.2025