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Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells
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Roles of megakaryocytes and platelets in myeloproliferative neoplasms

Molly Brakhane1, Abigail Ajanel2, Joshua I Siner1

  • 1Department of Medicine, Division of Hematology.

Current Opinion in Hematology
|June 17, 2026
PubMed
Abstract

Insights

Myeloproliferative neoplasms (MPNs) involve abnormal megakaryocytes and platelets, leading to bleeding and clotting. Understanding these cells is key to developing targeted therapies for better patient outcomes.

Area of Science:

  • Hematology
  • Oncology
  • Molecular Biology

Background:

  • Myeloproliferative neoplasms (MPNs) are a group of clonal hematopoietic stem cell disorders.
  • Megakaryocytes and platelets play critical roles in hemostasis and thrombosis.
  • Dysfunctional megakaryocytes and platelets contribute to the morbidity and mortality associated with MPNs.

Purpose of the Study:

  • To review the role of megakaryocytes and platelets in MPNs.
  • To examine how megakaryocytes influence disease progression and hemostasis.
  • To discuss emerging therapies targeting megakaryocytes and platelets in MPNs.

Main Methods:

  • Literature review of studies on megakaryocyte and platelet biology in MPNs.
  • Analysis of current therapeutic strategies and their impact on megakaryocytes and platelets.
  • Examination of transcriptomic profiling data for MPN platelets.

Main Results:

  • MPN megakaryocytes are hyperproliferative and promote niche dysregulation through cytokine secretion.
  • MPN platelets exhibit preactivation and functional exhaustion, linked to mitochondrial issues.
  • Platelet transcriptomics reveal disease-specific gene expression and a thrombo-inflammatory profile.

Conclusions:

  • Thrombotic and hemorrhagic complications are major issues in MPNs, with unclear underlying mechanisms.
  • Current treatments inadequately address platelet dysfunction; targeted therapies show promise.
  • Further research into megakaryocyte and platelet biology is crucial for developing precise MPN treatments.
Keywords:
megakaryopoiesismyeloproliferative neoplasmsplatelet function

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