Immobilized carboxypeptidase G1 in methotrexate removal

Area of Science:

• Biochemistry
• Biotechnology
• Pharmacology

Background:

• Methotrexate (MTX) is a chemotherapy agent requiring careful dosage management.
• High doses of MTX can lead to severe toxicity.
• Efficient methods for MTX removal from blood are crucial for patient safety.

Purpose of the Study:

• To develop and evaluate an extracorporeal enzyme reactor for methotrexate removal.
• To assess the stability and performance of immobilized carboxypeptidase G1.
• To determine the potential of this system for clinical applications, particularly MTX rescue therapy.

Main Methods:

• Immobilization of carboxypeptidase G1 onto nylon tubes and hollow fibers.
• Investigation of enzyme reactor stability and parameters using single and multitubular arrangements.
• In vivo experiments in dogs to evaluate the extracorporeal shunt's efficacy.

Main Results:

• The immobilized carboxypeptidase G1 system demonstrated effective methotrexate clearance.
• Reactor parameters were optimized for potential clinical use.
• In vivo studies in dogs indicated the feasibility of using these shunts for MTX rescue.

Conclusions:

• Extracorporeal enzyme reactors with immobilized carboxypeptidase G1 are a viable option for methotrexate removal.
• The system shows significant potential for clinical application in high-dose MTX therapy rescue.
• Further development could lead to improved patient outcomes in chemotherapy.