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<p>The MAFB protein, a member of the MAF family of bZip transcription factors, plays a pivotal role in various biological processes, including cell differentiation, development, and homeostasis. Characterized by its selective expression in monocytes and macrophages, MAFB has been shown to play a crucial role during myeloid lineage differentiation, acting as a critical determinant in the transition from multipotent progenitors to fully differentiated monocytes. By modulating the expression of genes associated with immune activation and inflammation, MAFB plays a vital role in maintaining immune homeostasis and responding to pathogenic challenges. Dysregulation of MAFB expression or function has been implicated in several pathological conditions, including hematological malignancies and metabolic disorders. In particular, aberrant MAFB activity has been associated with the progression of diseases such as multiple myeloma and acute myeloid leukemia as well as other solid tumors, where it may contribute to the survival and proliferation of malignant cells, thereby promoting disease progression. MAFB and downstream targets of its transcriptional network are now being regarded as predictive biomarkers for certain types of tumors as well as being considered as potential therapeutic targets for cancer treatment. In this review, we summarize current knowledge on both physiological and pathological roles of MAFB and highlight the impact of its deregulation on hematological cancer initiation and progression.</p>

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MAFB: a key regulator of myeloid commitment involved in hematological diseases

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月12日

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  • Antonio Benedetto Ventura,
  • Tiziana Loconte,
  • Antonio Negri,
  • Luigi Viggiano,
  • Giuseppe Fiermonte,
  • Sabino Ciavarella,
  • Attilio Guarini,
  • Giacomo Volpe

摘要

The MAFB protein, a member of the MAF family of bZip transcription factors, plays a pivotal role in various biological processes, including cell differentiation, development, and homeostasis. Characterized by its selective expression in monocytes and macrophages, MAFB has been shown to play a crucial role during myeloid lineage differentiation, acting as a critical determinant in the transition from multipotent progenitors to fully differentiated monocytes. By modulating the expression of genes associated with immune activation and inflammation, MAFB plays a vital role in maintaining immune homeostasis and responding to pathogenic challenges. Dysregulation of MAFB expression or function has been implicated in several pathological conditions, including hematological malignancies and metabolic disorders. In particular, aberrant MAFB activity has been associated with the progression of diseases such as multiple myeloma and acute myeloid leukemia as well as other solid tumors, where it may contribute to the survival and proliferation of malignant cells, thereby promoting disease progression. MAFB and downstream targets of its transcriptional network are now being regarded as predictive biomarkers for certain types of tumors as well as being considered as potential therapeutic targets for cancer treatment. In this review, we summarize current knowledge on both physiological and pathological roles of MAFB and highlight the impact of its deregulation on hematological cancer initiation and progression.