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Related Experiment Video

Updated: Apr 23, 2026

Subcloning Plus Insertion SPI - A Novel Recombineering Method for the Rapid Construction of Gene Targeting Vectors
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Recombining overlapping BACs into single large BACs.

George Kotzamanis1, Athanassios Kotsinas

  • 1Department of Histology and Embryology, School of Medicine, University of Athens, 75 Mikras Asias Str., Athens, 11527, Greece, geokotz@med.uoa.gr.

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Summary

We developed a method to link multiple bacterial artificial chromosome (BAC) clones, enabling the study of large gene regions. This system facilitates gene functional analysis and potential gene therapy applications.

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Area of Science:

  • Molecular Biology
  • Genomics
  • Biotechnology

Background:

  • Bacterial artificial chromosome (BAC) clones are crucial for analyzing gene functions, especially regulatory elements.
  • Large genes often exceed the capacity of single BAC clones, hindering comprehensive analysis.
  • Existing methods lack efficient ways to combine multiple BACs for studying extensive genomic regions.

Purpose of the Study:

  • To present a novel, generalizable system for linking overlapping BAC clones into a single, larger construct.
  • To enable the analysis of entire large gene regions, including distant regulatory elements.
  • To create versatile BAC clones for gene expression studies and gene therapy.

Main Methods:

  • Utilizing homologous recombination in two distinct rounds.
  • Subcloning BAC inserts into specialized pBACLink vectors.
  • Combining multiple overlapping BACs sequentially using alternating pBACLink vectors.

Main Results:

  • A system for generating large-insert BAC clones by linking multiple smaller BACs.
  • Successfully created BACs encompassing extensive genomic regions previously unavailable in single clones.
  • Demonstrated the ability to combine any number of overlapping BACs in a contig.

Conclusions:

  • The developed system provides a robust solution for assembling large genomic regions within BACs.
  • These novel BAC constructs are valuable tools for in-depth gene functional analysis.
  • The technology holds promise for advancing gene expression studies and gene therapy applications.