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Hematopoietic stem cell (HSC) (HSC)
- Target
- HSC
- Molecular classification
- Other (stem cell); not a receptor, enzyme, transporter, etc.
01
Overview
Hematopoietic stem cells (HSCs) are clonogenic progenitor cells capable of self-renewal and multilineage differentiation that reconstitute blood cell populations following transplantation. In HSCT, engraftment describes the process by which donor-derived HSCs home to the recipient's bone marrow niches, proliferate, and restore hematopoiesis. Success depends on the number and quality of transplanted HSCs, supportive marrow microenvironment, and immunological factors[1][3][6]. Engraftment can be accompanied by complications such as graft failure and engraftment syndrome, both reflecting immune dysregulation or insufficient HSC activity[2].
- Other names
- Hematopoietic precursor cellblood stem cellbone marrow stem cell
02
Mechanism of action
Cell replacement: transplanted HSCs reconstitute hematopoiesis Niche engraftment: HSCs home to bone marrow and proliferate Immunomodulation: immune reconstitution post-transplant
03
Biological functions
HematopoiesisCell differentiationCell proliferationEngraftment/colony formationImmune reconstitution
04
Disease associations
Cancer (leukemias, lymphomas: used in HSCT)Immunodeficiency (e.g., severe combined immunodeficiency)Bone marrow failure syndromesOther congenital hematologic disorders
05
Safety considerations
Graft failureEngraftment syndrome (immune complications)Graft-versus-host disease (GVHD)Infection riskCytopenias during delayed engraftment
06
Interacting drugs
G-CSF (granulocyte colony-stimulating factor; used for mobilization)
3 more in the full profile.
07
Biomarkers
CD34 (cell surface marker for HSCs)Engraftment monitoring: absolute neutrophil/platelet countsMolecular chimerism assays
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