Expression of human stem cell factor in the baculovirus expression system

Area of Science:

• Biotechnology
• Molecular Biology
• Insect Cell Culture

Background:

• Stem Cell Factor (SCF) is crucial for hematopoiesis and melanogenesis.
• Efficient production of recombinant SCF is essential for research and therapeutic applications.
• Baculovirus expression systems offer a robust platform for protein production in insect cells.

Purpose of the Study:

• To develop a method for expressing soluble, biologically active human Stem Cell Factor (SCF) in an insect system.
• To characterize the properties of the recombinant SCF protein.
• To evaluate the potential of the Bombyx Mori Nuclear Polyhedrosis Virus system for SCF production.

Main Methods:

• Isolation and cloning of a partial human SCF cDNA.
• Construction of a recombinant baculovirus vector (Bombyx Mori Nuclear Polyhedrosis Virus) expressing SCF under the polyhedrin promoter.
• Expression of recombinant SCF in Bombyx Mori cells and silkworm larvae.
• Analysis of SCF protein secretion and activity.

Main Results:

• Soluble, active human SCF was successfully expressed and secreted into the medium.
• The recombinant SCF protein exhibited comparable interaction with a monoclonal antibody to natural SCF.
• Synergistic biological activity of recombinant SCF with colony-stimulating factor was observed.

Conclusions:

• The Bombyx Mori baculovirus expression system is effective for producing biologically active, soluble human SCF.
• Recombinant SCF produced via this system shows functional similarity to the natural protein.
• This method provides a viable approach for large-scale production of functional SCF.