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Assay of insulator enhancer-blocking activity with the use of transient transfection

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Abstract

We used a transient transfection of cultured cells with linearized plasmids to analyze the enhancer-blocking activity of potential insulators including the standard cHS4 chicken beta-globin insulator and several DNA fragments selected from the human genome sequence. About 60–80% of the potential insulators do reveal the enhancer-blocking activity when probed by the transient transfection assay. The activity of different sequences is characterized by certain tissue specificity and by dependence on the orientation of the fragments relative to the promoter. Thus, the transfection model may be used for quantitative analysis of the enhancer-blocking activity of the potential insulators.

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Authors and Affiliations

  1. Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997, Moscow, Russia

    N. A. Smirnov, D. A. Didych, S. B. Akopov, L. G. Nikolaev & E. D. Sverdlov

Authors
  1. N. A. Smirnov
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  2. D. A. Didych
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  3. S. B. Akopov
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  4. L. G. Nikolaev
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  5. E. D. Sverdlov
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Corresponding author

Correspondence to S. B. Akopov.

Additional information

Published in Russian in Biokhimiya, 2013, Vol. 78, No. 8, pp. 1141–1150.

Originally published in Biochemistry (Moscow) On-Line Papers in Press, as Manuscript BM13-087, June 23, 2013.

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Smirnov, N.A., Didych, D.A., Akopov, S.B. et al. Assay of insulator enhancer-blocking activity with the use of transient transfection. Biochemistry Moscow 78, 895–903 (2013). https://doi.org/10.1134/S0006297913080051

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  • DOI: https://doi.org/10.1134/S0006297913080051

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