Back to Search
Start Over
Production of active recombinant human aldehyde oxidase (AOX) in the baculovirus expression vector system (BEVS) and deployment in a pre-clinical fraction-of-control AOX compound exposure assay
- Source :
- Protein Expression and Purification. 177:105749
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Human aldehyde oxidase (AOX) has emerged as a key enzyme activity for consideration in modern drug discovery. The enzyme catalyzes the oxidation of a wide variety of compounds, most notably azaheterocyclics that often form the building blocks of small molecule therapeutics. Failure to consider and assess AOX drug exposure early in the drug development cycle can have catastrophic consequences for novel compounds entering the clinic. AOX is a complex molybdopterin-containing iron-sulfur flavoprotein comprised of two identical 150 kDa subunits that has proven difficult to produce in recombinant form, and a commercial source of the purified human enzyme is currently unavailable. Thus, the potential exposure of novel drug development candidates to human AOX metabolism is usually assessed by using extracts of pooled human liver cytosol as a source of the enzyme. This can complicate the assignment of AOX-specific compound exposure due to its low activity and the presence of contaminating enzymes that may have overlapping substrate specificities. Herein is described a two-step process for the isolation of recombinant human AOX dimers to near homogeneity following production in the baculovirus expression vector system (BEVS). The deployment of this BEVS-produced recombinant human AOX as a substitute for human liver extracts in a fraction-of-control AOX compound-exposure screening assay is described. The ability to generate this key enzyme activity readily in a purified recombinant form provides for a more accurate and convenient approach to the assessment of new compound exposure to bona fide AOX drug metabolism.
- Subjects :
- Iron-Sulfur Proteins
0106 biological sciences
Genetic Vectors
Coenzymes
Gene Expression
Flavoprotein
Spodoptera
01 natural sciences
Substrate Specificity
law.invention
03 medical and health sciences
law
010608 biotechnology
Metalloproteins
Sf9 Cells
Animals
Humans
Amino Acid Sequence
Cloning, Molecular
Aldehyde oxidase
030304 developmental biology
chemistry.chemical_classification
0303 health sciences
Flavoproteins
biology
Chemistry
Drug discovery
Pteridines
Recombinant Proteins
Enzyme assay
Aldehyde Oxidase
Kinetics
Protein Subunits
HEK293 Cells
Enzyme
Drug development
Biochemistry
Cinnamates
Recombinant DNA
biology.protein
Biological Assay
Protein Multimerization
Baculoviridae
Molybdenum Cofactors
Drug metabolism
Biotechnology
Subjects
Details
- ISSN :
- 10465928
- Volume :
- 177
- Database :
- OpenAIRE
- Journal :
- Protein Expression and Purification
- Accession number :
- edsair.doi.dedup.....f488fb214c087fd6e3f5d6c27bdcee91