alexa Trapping Enhancers by Transgenic Expression of BACs Engineered in Bacteria with loxP Transposons
ISSN: 2472-128X

Journal of Clinical & Medical Genomics
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Review Article

Trapping Enhancers by Transgenic Expression of BACs Engineered in Bacteria with loxP Transposons

Hope M Wolf1,2, Kevin O Nyabera1, Katya K De La Torre1, Mugtaba A Eltayeb1, Leighcraft A Shakes1, Charles Hatcher1, Derek C Norford1 and Pradeep K Chatterjee1*

1 Julius L. Chambers Biomedical/Biotechnology Research Institute & Department of Chemistry, North Carolina Central University, 1801 Fayetteville Street, Durham, NC
27707, USA

2 Department of Chemistry, University of North Carolina at Chapel-Hill, Chapel-Hill, NC 27599, USA

*Corresponding Author:
Pradeep K Chatterjee
Julius L. Chambers Biomedical/Biotechnology Research Institute & Department of Chemistry
North Carolina Central University
1801 Fayetteville Street, Durham, NC 27707, USA
Tel: (919)530-7017
Fax: (919)530-7998
E-mail: [email protected]

Received Date: December 27, 2013; Accepted Date: February 13, 2014; Published Date: February 20, 2014

Citation: Wolf HM, Nyabera KO, De La Torre KK, Eltayeb MA, Shakes LA, et al.(2014) Trapping Enhancers by Transgenic Expression of BACs Engineered in Bacteria with loxP Transposons. Int J Genomic Med 2:114. doi: 10.4172/2332-0672.1000114

Copyright: © 2014 Wolf HM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricteduse, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Bacterial Artificial Chromosomes (BACs) are large extra-chromosomal plasmids in bacteria that faithfully propagate large pieces of DNA from the chromosomes of organisms. Because they represent tiny contiguous pieces of the chromosome, BACs are ideally suited for expression of genes in their chromosomal contexts. Genes in BACs can be monitored for expression after the DNA is modified with reporter genes and other sequences that allow it to be stably propagated in the new host. Several methods have been developed to alter BAC DNA within its bacterial host. One approach uses Tn10 mini-transposons to introduce exogenous DNA into BACs. The random insertions of Tn10 carrying lox sites have directed mammalian cell-selectable antibiotic resistance genes, enhancer-traps and inverted repeat ends of the vertebrate transposon Tol2 precisely to the ends of genomic DNA inserts in BACs. Reporter gene expression from BAC DNA integrated into zebrafish or mouse chromosomes have resulted from such retrofitting. The methodology has been used extensively to analyze regulation of the Amyloid Precursor Protein (appb) gene in zebrafish. Functional identification of long-range regulatory sequences of appb has provided important clues for regulation of the APP gene in humans.

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