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Related Experiment Videos

High level expression of functionally active human lactoferrin in silkworm larvae.

Tao Liu1, Yao-Zhou Zhang, Xiang-Fu Wu

  • 1Institute of Biochemistry, College of Life Sciences, Zhejiang University, Hangzhou 310029, China.

Journal of Biotechnology
|July 5, 2005
PubMed
Summary

This study successfully produced functional recombinant human lactoferrin (rhLf) using a silkworm expression system. The rhLf demonstrated biological activity in a mouse model of colitis, highlighting the system

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Immunology

Background:

  • Recombinant human lactoferrin (rhLf) is a valuable therapeutic protein.
  • Efficient and scalable expression systems are needed for rhLf production.
  • The Bombyx mori baculovirus system offers potential for biopharmaceutical manufacturing.

Purpose of the Study:

  • To express and characterize functional rhLf using the Bombyx mori baculovirus expression system.
  • To evaluate the biological activity of the expressed rhLf in a preclinical model.

Main Methods:

  • Expression of rhLf in silkworm larvae using the recombinant baculovirus vBm-hLf.
  • Purification of rhLf from silkworm hemolymph.
  • Characterization of rhLf molecular mass.

Related Experiment Videos

  • In vivo bioassay in a dextran sodium sulfate (DSS)-induced colitis mouse model.

    • Main Results:

    • High-level expression and secretion of rhLf into silkworm hemolymph.
    • Purified rhLf concentration reached approximately 65 microg/ml.
    • Isolated rhLf had a molecular mass of approximately 78 kDa, potentially due to glycosylation or degradation.
    • rhLf exhibited biological activity in the DSS-induced colitis mouse model.

    Conclusions:

    • The Bombyx mori baculovirus expression system is effective for producing functional rhLf.
    • Silkworm expression system provides a viable platform for producing therapeutic proteins like rhLf.
    • Further studies can optimize glycosylation and minimize degradation for enhanced rhLf efficacy.