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Stem Cell Replacement

Molecular classification: Cellular Therapy, Hematopoietic Progenitor, Multipotent Progenitor

Overview

Stem cell replacement, or stem cell transplantation, is a medical procedure used to replace damaged or destroyed stem cells with healthy stem cells. This is achieved through infusion of either donor (allogeneic or syngeneic) or patient's own (autologous) stem cells after high-dose chemotherapy or radiation. The transplanted stem cells engraft in the bone marrow or target tissue, proliferate, and differentiate to restore normal tissue function, primarily in the hematopoietic system. It's used to treat blood cancers, bone marrow failure syndromes, and sometimes for regenerative medicine.

Other names: Bone Marrow Transplant (BMT)Hematopoietic Stem Cell Transplantation (HSCT)Peripheral Blood Stem Cell Transplantation (PBSCT)High-dose therapy with stem cell rescueBlood Cell Transplantation (BCT)

Mechanism of action

Replacement of damaged or destroyed host stem cells with healthy donor or autologous stem cells, leading to reconstitution of the hematopoietic system or regeneration of target tissues.

Biological functions

Tissue regenerationHematopoiesisImmunomodulationCell differentiationCell engraftmentSelf-renewal

Disease associations

LeukemiaLymphomaBone marrow failure syndromesInherited metabolic disordersCancer

Safety considerations

Graft-versus-host disease (GVHD)Infection (bacterial, viral, fungal)Veno-occlusive disease (VOD)Graft failureRelapse of underlying diseaseSecondary malignanciesImmunosuppression-related complications

Interacting drugs

Chemotherapy agents (e.g., cyclophosphamide, busulfan)

2 more in the full profile.

Biomarkers

CD34+ cell count (for stem cell mobilization and engraftment)Minimal residual disease (MRD) in leukemiaDonor chimerism (proportion of donor cells in recipient)Complete Blood Count (CBC)Cytokine levels

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