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Updated: Dec 8, 2025
Immunophenotyping and Cell Sorting of Human MKs from Human Primary Sources or Differentiated In Vitro from Hematopoietic Progenitors
Published on: August 7, 2021
In vitro megakaryocyte culture from human bone marrow aspirates as a research and diagnostic tool
Kirill R Butov1,2, Elena Y Osipova1, Nikita B Mikhalkin2
1Oncology and Immunology, Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Moscow, Russia.
Abstract:
Megakaryocytes (MKs) are relatively rare in bone marrow, comprising <0.05% of the nucleated cells, which makes direct isolation from human bone marrow impractical. As such, in vitro expansion of primary MKs from patient samples offers exciting fundamental and clinical opportunities. As most of the developed ex vivo methods require a substantial volume of biomaterial, they are not widely performed on young patients. Here we propose a simple, robust, and adapted method of primary human MK culture from 1 mL of bone marrow aspirate. Our technique uses a small volume of bone marrow per culture, uses straightforward isolation methods, and generates approximately 6 × 105 mature MKs per culture. The relative high cell purity and yield achieved by this technique, combined with efficient use of low volumes of bone marrow, make this approach suitable for diagnostic and basic research of human megakaryopoiesis.
Insights
This study presents a new method for culturing megakaryocytes (MKs) from small bone marrow samples. The technique yields a high number of pure MKs, making it suitable for research and diagnostics, especially for pediatric patients.
Area of Science:
- Hematology
- Cell Biology
- Biotechnology
Background:
- Megakaryocytes (MKs) are crucial for platelet production but are rare in bone marrow, complicating direct isolation.
- Existing ex vivo culture methods often require large biomaterial volumes, limiting their use in pediatric patients.
Purpose of the Study:
- To develop a simple, robust, and adapted method for in vitro expansion of primary human MKs from a small volume (1 mL) of bone marrow aspirate.
- To enable fundamental and clinical research on human megakaryopoiesis, particularly for pediatric applications.
Main Methods:
- Culture of primary human MKs using a low volume (1 mL) of bone marrow aspirate.
- Employment of straightforward isolation techniques for cell enrichment.
- Optimization of culture conditions for efficient MK expansion.
Main Results:
- Generation of approximately 6 x 10^5 mature MKs per culture.
- Achieved high cell purity and yield from a minimal volume of bone marrow.
- Demonstrated the suitability of the method for small-volume samples.
Conclusions:
- The developed method provides a practical approach for human MK culture from limited bone marrow samples.
- This technique is advantageous for diagnostic and basic research, especially when biomaterial is scarce, such as in pediatric cases.
- Facilitates further studies into human megakaryopoiesis and related disorders.
