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Cited by 277

The DOI matches its Crossref record; 20 of the 20 references it cites were found in a registry or an index.

Direct transfer of cloned genes from bacteria to mammalian cells.

Open access
Schaffner, W·1980·Proceedings of the National Academy of Sciences

Abstract

Induction of a virus infection by cloned simian virus 40 DNA was chosen as a test system to detect transfer of genes from bacteria to cultured mammalian cells. Escherichia coli cells containing a recombinant plasmid with three tandem inserts of simian virus 40 DNA were able to infect CV-1 monkey cells under various conditions. The gene transfer was resistant to DNase I and therefore seems not to occur via free DNA but most likely via uptake of whole bacteria, followed by release of plasmid DNA and generation of infectious circular simian virus 40 DNA in a recombination-excision process. Spontaneous transfer was found to be infrequent, 4 x 10(9) bacteria yielding one infection per 10(7) monkey cells. The frequency was greatly increased by adding bacteria as a calcium phosphate coprecipitate or by fusion of lysozyme-treated bacteria (protoplasts) with monkey cells in the presence of polyethylene glycol. With the latter technique, 10(4) protoplasts gave rise to one infection per 15 monkey cells. Experiments with other cell lines of human, monkey, and mouse origin, and also with bacteria harboring another recombinant plasmid, indicate that DNA transfer from bacteria to mammalian cells is a general phenomenon.

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Metadata

Authors
Schaffner, W.
Venue
Proceedings of the National Academy of Sciences
Published
1980-04
Volume
77
Issue
4
Pages
2163-2167
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2008416020
Cited by
277
References
20
FWCI
17.21
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Direct transfer of cloned genes from bacteria to mammalian cells. https://app.cochat.ai/papers/10.1073/pnas.77.4.2163
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Schaffner, W. (1980). Direct transfer of cloned genes from bacteria to mammalian cells. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.77.4.2163

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