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Large macromolecules can be introduced into cultured mammalian cells using erythrocyte membrane vesicles.

Abstract：

:Plasmid 6.4 kbp DNA, 14 kbp DNA, lambda phage particles, all of which contained herpes simplex virus type 1 (HSV-1) thymidine kinase (TK) gene, or IgM molecules, were mixed with erythrocyte membranes and treated with neutral detergent. The transparent mixture was diluted with phosphate-buffered saline (PBS), followed by centrifugation to collect membrane vesicles containing the large macromolecules. 10-15% of 6.4 kbp, 3% of 14 kbp, 4-7% of the lambda phage particles and 14.5% of IgM were trapped within erythrocyte membrane vesicles. The membrane vesicles containing these molecules were fused with L cells, or rat F2408#20 cells, both of which are deficient in thymidine kinase activity. In each case, transformants were obtained. 2 X 10(5) - 7 X 10(5) phage PFU or 1.5 X 10(6) - 8 X 10(7) DNA molecules were required to obtain one transformant from L cells, but 2-3 X 10(7) phage PFU or 2 X 10(9) - 1 X 10(10) DNA molecules were required for one transformant from rat cells. Number of colonies which transiently expressed TK genes in L cells was also determined by autoradiography. The ratio of stable transformants to colonies positive for transient expression in cells treated with low doses of DNA or lambda phage was 46-68%. The transformation efficiency of human fibroblast cells by pSV2-gpt DNA trapped in erythrocyte membrane vesicles was less than that of L cells by HSV-TK DNA, but almost the same as that of rat cells by HSV-TK DNA.

journal_name

Exp Cell Res

journal_title

Experimental cell research

authors

Sugawa H,Uchida T,Yoneda Y,Ishiura M,Okada Y

doi

10.1016/s0014-4827(85)80014-8

subject

Has Abstract

pub_date

1985-08-01 00:00:00

pages

410-8

issue

2

eissn

0014-4827

issn

1090-2422

journal_volume

159

pub_type

杂志文章

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