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Production of Recombinant PRMT Proteins using the Baculovirus Expression Vector System
Published on: July 17, 2021
Baculovirus expression system: an alternative for producing catalytically active human PTP-1B
Sindhuja Sundaram1, Prabhakar Tiwari, Shalini Saini
1Department of Molecular Technology, New Drug Discovery Research, Ranbaxy Research Laboratories, Gurgaon-122001, India. sudhir.sahdev@ranbaxy.com
Molekuliarnaia Biologiia
|July 9, 2010
Summary
Overexpressing Protein Tyrosine Phosphatase-1B (PTP-1B) causes cell toxicity. A novel baculovirus-insect cell system enhances PTP-1B expression and activity, offering a better alternative for drug discovery.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Protein tyrosine phosphatases (PTPs) are crucial in physiological processes.
- PTP overexpression, particularly PTP-1B, induces cytotoxicity and reduces cell clone viability in mammalian systems (CHO, HEK293).
Purpose of the Study:
- To develop an alternative expression system for PTP-1B to overcome cytotoxicity issues.
- To evaluate the efficacy of a recombinant baculovirus-insect cell system for PTP-1B production.
Main Methods:
- Utilized bacmid transposition technology to create recombinant PTP-1B baculovirus.
- Infected Spodoptera frugiperda (Sf9 and Sf21) insect cell lines with the recombinant baculovirus.
Main Results:
- The baculovirus-insect cell system demonstrated superior PTP-1B expression and significantly higher enzyme activity compared to mammalian cell lines.
- Enzyme activity was confirmed to be strongly inhibited by the specific inhibitor RK682.
- This system offers improved revival rates and reduced cytotoxicity.
Conclusions:
- The recombinant baculovirus-insect cell expression system provides a robust and efficient method for producing active PTP-1B.
- This system presents a significant advantage over traditional mammalian cell-based expression for PTP-1B.
- The system holds potential for large-scale enzyme production for novel drug discovery efforts.
