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New BK virus episomal vector for complementary DNA expression in human cells.

M P Grossi1, A Caputo, P Rimessi

  • 1Institute of Microbiology, School of Medicine, University of Ferrara, Italy.

Archives of Virology
|January 1, 1988
PubMed
Summary

A novel pRP-c vector utilizing BK virus sequences enables efficient complementary DNA (cDNA) expression and amplification in human cells. This episomal vector shows superior performance compared to traditional integration vectors for gene expression studies.

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Area of Science:

  • Molecular Biology
  • Virology
  • Gene Expression

Background:

  • Development of efficient expression vectors is crucial for molecular biology research.
  • Existing integration vectors have limitations in human cell gene expression.
  • BK virus (BKV) offers unique properties for vector development.

Purpose of the Study:

  • To describe the properties of pRP-c, a new complementary DNA (cDNA) expression vector.
  • To evaluate the efficiency of pRP-c for gene expression in human cells.
  • To compare pRP-c with existing integration vectors.

Main Methods:

  • Constructed pRP-c vector incorporating BKV early region and replication origin.
  • Inserted bacterial genes (chloramphenicol acetyltransferase [CAT] and neomycin phosphotransferase [neo]) into pRP-c.

Related Experiment Videos

  • Expressed inserted genes in human cells via transient and stable assays.
  • Compared expression levels with pSV2CAT and pSV2neo integration vectors.

    • Main Results:

    • pRP-c replicates in human cells, facilitating cDNA amplification.
    • Modular design allows individual substitution of transcription signals.
    • Efficient expression of CAT and neo genes in human cells.
    • pRP-c demonstrated significantly higher expression efficiency than pSV2CAT and pSV2neo.

    Conclusions:

    • pRP-c is a highly efficient episomal expression vector for human cells.
    • The vector design offers flexibility for diverse gene expression applications.
    • pRP-c presents advantages over integration vectors for expressing viral and cellular cDNAs.