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Updated: Aug 5, 2025

Ex Vivo Expansion of Hematopoietic Stem Cells from Human Umbilical Cord Blood-derived CD34+ Cells Using Valproic Acid

Ex Vivo Expansion of Hematopoietic Stem Cells from Human Umbilical Cord Blood-derived CD34+ Cells Using Valproic Acid

Published on: April 11, 2019

In Vitro Human Haematopoietic Stem Cell Expansion and Differentiation.

Yavor K Bozhilov¹, Ian Hsu¹, Elizabeth J Brown¹

¹MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford OX3 9DS, UK.

|March 29, 2023

Summary

This summary is machine-generated.

Hematopoiesis, the process of blood cell formation, relies on hematopoietic stem cells (HSCs). This review explores in vitro culture methods for HSC expansion and differentiation, crucial for research and clinical applications.

Keywords:

B cell T cell differentiation erythrocyte expansion haematopoiesis haematopoietic stem cells in vitro megakaryocyte monocyte neutrophil self-renewal

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Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells

Published on: November 1, 2017

Area of Science:

Hematology
Stem Cell Biology
Cellular Biology

Background:

The hematopoietic system generates diverse blood and immune cells, including erythrocytes, megakaryocytes, and lymphocytes.
Self-renewing hematopoietic stem cells (HSCs) and progenitor cells continuously replenish mature blood cell populations, maintaining homeostasis.
This vital process, known as hematopoiesis, is primarily regulated within the bone marrow.

Purpose of the Study:

To review in vitro culture protocols for human HSC expansion and differentiation.
To summarize key factors influencing HSC behavior in culture.
To highlight the utility of in vitro systems for studying human hematopoiesis and developing cell-based therapies.

Main Methods:

Review of established in vitro culture systems for hematopoietic stem and progenitor cells.
Analysis of methods utilizing recombinant cytokines, co-culture systems, and small molecules.
Discussion of protocols for both HSC expansion and lineage-specific differentiation.

Main Results:

In vitro culture systems provide tractable models for studying human hematopoiesis.
Various protocols exist for expanding HSCs and directing their differentiation into specific lineages.
These systems are instrumental in advancing cell therapy and transfusion medicine.

Conclusions:

In vitro culture techniques are essential for understanding human hematopoiesis and its regulation.
Optimized protocols are critical for successful HSC expansion and differentiation.
These advancements hold significant promise for transplantation and transfusion medicine applications.