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Updated: Jul 5, 2026
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Transient Expression and Cellular Localization of Recombinant Proteins in Cultured Insect Cells
Published on: April 20, 2017
[Expression of human CYP2E1 in insect cells using bac-to-bac expression system]
1Department of Pharmaceutical Analysis and Drug Metabolism, College of Pharmaceutical Science, Zhejiang University, Hangzhou 310058, China.
Summary
Recombinant human CYP2E1 was successfully produced using a bac-to-bac expression system. The enzyme's activity, measured with chlorzoxazone, aligns with previous findings, confirming its functional expression.
Area of Science:
- Biochemistry
- Molecular Biology
- Enzymology
Background:
- Cytochrome P450 2E1 (CYP2E1) is a crucial enzyme in drug metabolism and xenobiotic detoxification.
- Efficient production of active recombinant CYP2E1 is essential for detailed mechanistic studies and drug development.
Purpose of the Study:
- To obtain active recombinant human CYP2E1 using a bac-to-bac expression system.
- To characterize the enzymatic activity of the expressed CYP2E1 using a specific substrate.
Main Methods:
- Human CYP2E1 cDNA was amplified via RT-PCR and cloned into a pFastBac vector.
- A recombinant baculovirus expressing human CYP2E1 was generated in Sf9 insect cells using the bac-to-bac system.
- Enzyme activity was assessed using chlorzoxazone as a probe substrate.
Main Results:
- The kinetic parameters for recombinant CYP2E1 with chlorzoxazone were determined.
- Km was found to be (72.4 +/- 8.7) micromol/L and Vmax was (2.41 +/- 0.10) micromol/min/g protein.
Conclusions:
- Active recombinant human CYP2E1 was successfully obtained through the bac-to-bac expression system.
- The characterized activity of the recombinant CYP2E1 is comparable to previously reported values, validating the expression system.
