Hematopoietic progenitor cell collection.

Area of Science:

• Hematology
• Cell Biology
• Transplantation Medicine

Background:

• Hematopoietic progenitor cells (HPCs) reside in the bone marrow.
• Mobilization of HPCs into peripheral blood is induced by cytokines (G-CSF, GM-CSF, IL-3), CXCR4 antagonists (Plerixafor), or chemotherapy recovery.
• HPCs are found in the peripheral blood mononuclear cell fraction.

Purpose of the Study:

• To describe the principles and methods of apheresis for collecting mobilized HPCs.
• To detail the management of patients undergoing apheresis.
• To review the operation of the COBE Spectra apheresis system.

Main Methods:

• Apheresis separates blood components based on buoyant density.
• Modern apheresis processes large blood volumes (≥24 L) over 4-5 hours.
• Efficiently removes >70% of CD34+ cell progenitors.

Main Results:

• Apheresis is an effective method for collecting mobilized HPCs.
• The procedure requires careful management of venous access, anticoagulation (citrate), and hemodynamic status.
• The COBE Spectra system's setup and operation are detailed.

Conclusions:

• Apheresis is a critical procedure for obtaining HPCs for transplantation.
• Effective patient management and system operation are essential for successful apheresis.
• Understanding and managing apheresis-related toxicities (hypocalcemia, allergic, vasovagal reactions) is crucial.