DOI: 10.1073/pnas.88.10.4255. Transferrin-polycation-DNA complexes: the effect of polycations on the structure of the complex and DNA delivery to cells.

Transferrin-polycation-DNA complexes: the effect of polycations on the structure of the complex and DNA delivery to cells.

10.1073/pnas.88.10.4255

Crossref journal-article

Proceedings of the National Academy of Sciences

Proceedings of the National Academy of Sciences (341)

Abstract

We have previously described a gene delivery system based upon the receptor-mediated endocytosis of DNA complexed with transferrin-polycation conjugates. This delivery system has been found to be very effective for both the internalization and the expression of genetic material in cells that have many transferrin receptors. Upon scrutinization of the parameters involved in this method, which we have termed transferrinfection, we note two important features of the process: the polycation in polycation-transferrin conjugates, as expected, serves to attach the transferrin moiety to the DNA and, in addition, the polycation functions to condense the DNA into a doughnut structure. Electron microscopic analysis of a range of poorly active to highly active transferrinfection samples reveals a strong correlation between DNA condensation and cellular DNA uptake. Furthermore, we demonstrate that the transfection activity of the DNA complex can be increased by addition of free polycation as long as a sufficient quantity of polycation-transferrin conjugates remains in the complex to ensure its binding to the cellular receptor.

Bibliography

Wagner, E., Cotten, M., Foisner, R., & Birnstiel, M. L. (1991). Transferrin-polycation-DNA complexes: the effect of polycations on the structure of the complex and DNA delivery to cells. Proceedings of the National Academy of Sciences, 88(10), 4255â4259.

Authors 4

E Wagner (first)
M Cotten (additional)
R Foisner (additional)
M L Birnstiel (additional)

References 0 Referenced 374

None

Dates

Type	When
Created	19 years, 3 months ago (May 31, 2006, 7:38 a.m.)
Deposited	3 years, 4 months ago (April 13, 2022, 1:20 p.m.)
Indexed	3 weeks, 6 days ago (Aug. 6, 2025, 9:28 a.m.)
Issued	34 years, 3 months ago (May 15, 1991)
Published	34 years, 3 months ago (May 15, 1991)
Published Online	34 years, 3 months ago (May 15, 1991)
Published Print	34 years, 3 months ago (May 15, 1991)

Funders 0

None

BibTeX

@article{Wagner_1991, title={Transferrin-polycation-DNA complexes: the effect of polycations on the structure of the complex and DNA delivery to cells.}, volume={88}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.88.10.4255}, DOI={10.1073/pnas.88.10.4255}, number={10}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Wagner, E and Cotten, M and Foisner, R and Birnstiel, M L}, year={1991}, month=may, pages={4255–4259} }

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