Molecular and Functional Platelet Abnormalities in Myeloproliferative Neoplasms

Area of Science:

• Hematology
• Oncology
• Molecular Biology

Background:

• Myeloproliferative neoplasms (MPNs) are stem cell disorders characterized by excessive myeloid proliferation due to JAK-STAT signaling mutations.
• MPNs present significant clinical challenges, including high rates of thrombosis, bleeding complications, and progression to advanced disease stages like acute myeloid leukemia.
• Platelets, beyond hemostasis, play roles in inflammation, immunity, and cancer, making them relevant to MPN pathophysiology.

Purpose of the Study:

• To review the role of circulating platelets as indicators of MPN pathophysiology.
• To summarize current knowledge on platelet function and molecular changes in MPNs.
• To highlight the potential of platelet-based biomarkers for diagnosing and managing MPNs.

Main Methods:

• Review of current literature on platelet function in MPNs.
• Analysis of platelet transcriptomics and proteomics data.
• Identification of platelet-associated molecular candidates.

Main Results:

• Platelets exhibit functional and molecular abnormalities in MPNs, reflecting disease pathophysiology.
• Platelet transcriptomics and proteomics can reveal MPN subtype-specific signatures.
• Emerging platelet-associated candidates show promise as biomarkers for disease status and clinical risk.

Conclusions:

• Circulating platelets provide a valuable window into MPN pathogenesis.
• Platelet-based biomarkers can potentially enhance diagnostic and prognostic strategies for MPNs.
• Understanding platelet abnormalities may lead to improved management of thrombosis and bleeding in MPN patients.