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Structure and Function of Platelets

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RNA-seq Analysis of Transcriptomes in Thrombin-treated and Control Human Pulmonary Microvascular Endothelial Cells

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RNA Sequencing Indicates Distinct Platelet Transcriptomic Changes in Immune Thrombocytopenia.

Julia-Annabell Georgi¹, Marita Hartwig¹, Ulrike Anne Friedrich²

¹Medical Department 1, University Hospital Carl Gustav Carus, Dresden University of Technology, Dresden, Germany.

Journal of Thrombosis and Haemostasis : JTH

|July 4, 2026

Summary

Platelet transcriptomics in immune thrombocytopenia (ITP) reveal unique activation pathways and altered metabolism. These findings highlight disease-specific changes in platelet biology, offering new insights into ITP pathogenesis.

Keywords:

Immune thrombocytopenia RNA sequencing platelet activation platelet transcriptome

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Published on: November 29, 2024

Area of Science:

Hematology
Molecular Biology
Genomics

Background:

Platelet-intrinsic alterations in immune thrombocytopenia (ITP) are not fully understood.
Platelets, despite lacking a nucleus, possess a functional transcriptome.
Transcriptomic profiling offers a window into disease-associated platelet changes.

Purpose of the Study:

Investigate platelet-intrinsic transcriptomic alterations in ITP.
Determine if these transcriptomic changes are specific to ITP compared to other thrombocytopenias.

Main Methods:

Performed total RNA sequencing on purified platelets.
Included patients with active ITP, chemotherapy-induced thrombocytopenia, ITP in remission, and healthy controls.

Main Results:

Active ITP platelets showed increased RNA content, indicating younger platelets.
Transcriptomic analysis revealed upregulated platelet activation pathways (integrin, calcium signaling) and downregulated mitochondrial genes.
Elevated RNA content was observed in both active ITP and chemotherapy-induced thrombocytopenia, but activation signatures were unique to active ITP.
Platelets in ITP remission showed partial normalization of the transcriptional profile.

Conclusions:

Distinct platelet transcriptomic changes in ITP include upregulated activation pathways and reduced mitochondrial gene expression.
This profile suggests an activation-primed, metabolically altered platelet state in ITP.
These findings may reflect fundamental changes in platelet biology specific to ITP.