Gosset Bone marrow hematopoietic progenitor cells Overview
Bone marrow hematopoietic progenitor cells are a diverse group of immature blood-forming cells residing in the bone marrow, responsible for the continuous regeneration of all blood cell types, including lymphoid and myeloid lineages. They include both long-term self-renewing hematopoietic stem cells (HSCs) and lineage-committed multipotent or oligopotent progenitors. These cells are essential for normal hematopoiesis, can be therapeutically harnessed in bone marrow transplantation, and are implicated in malignancies such as leukemia when their differentiation or self-renewal capacity is dysregulated. Their identification relies on specific cell surface antigens (e.g., CD34, c-Kit), and they are studied as targets for both regenerative medicine and chemotherapeutic strategies, but the population itself is not a receptor or discrete molecular entity.
Mechanism of Action
Biological Functions
Disease Associations
Safety Considerations
- Risk of graft-versus-host disease following transplantation
- Myelosuppression with chemotherapeutic targeting
- Clonal evolution and risk of malignant transformation (e.g., leukemia, MDS)
- Infection risk due to immune deficiency if depleted
Associated Biomarkers
| Biomarker |
|---|
| CD34 (used clinically to identify and isolate HSPCs for transplantation) |
| c-Kit (CD117) |
| Sca-1 |
| CD133 |