Protein Transduction Domain of HIV-1 Tat Protein Promotes Efficient Delivery of DNA into Mammalian Cells
| Autor: | Mamoru Hasegawa, Teruo Akuta, Haruhiko Yokoi, Hajime Okuyama, Shigeo Fujita, Hachiro Inokuchi, Takao Senda, Takao Hayakawa, Katsuo Takeda, Akiko Eguchi, Mahito Nakanishi |
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| Rok vydání: | 2001 |
| Předmět: |
Vesicle-associated membrane protein 8
Gene Transfer Horizontal Genetic Vectors Molecular Sequence Data Endocytic cycle Biology Biochemistry Marker gene law.invention law Caveolae Animals Humans Amino Acid Sequence Molecular Biology Gene Peptide sequence DNA Cell Biology Molecular biology Cell biology Gene Products tat HIV-1 Recombinant DNA tat Gene Products Human Immunodeficiency Virus Nuclear localization sequence |
| Zdroj: | Journal of Biological Chemistry. 276:26204-26210 |
| ISSN: | 0021-9258 |
| DOI: | 10.1074/jbc.m010625200 |
| Popis: | The plasma membrane of mammalian cells is one of the tight barriers against gene transfer by synthetic delivery systems. Various agents have been used to facilitate gene transfer by destabilizing the endosomal membrane under acidic conditions, but their utility is limited, especially for gene transfer in vivo. In this article, we report that the protein transduction domain of human immunodeficiency virus type 1 Tat protein (Tat peptide) greatly facilitates gene transfer via membrane destabilization. We constructed recombinant lambda phage particles displaying Tat peptide on their surfaces and carrying mammalian marker genes as part of their genomes (Tat-phage). We demonstrate that, when animal cells are briefly exposed to Tat-phage, significant expression of phage marker genes is induced with no harmful effects to the cells. In contrast, recombinant phage displaying other functional peptides, such as the integrin-binding domain or a nuclear localization signal, could not induce detectable marker gene expression. The expression of marker genes induced by Tat-phage is not affected by endosomotropic agents but is partially impaired by inhibitors of caveolae formation. These data suggest that Tat peptide will become a useful component of synthetic delivery vehicles that promote gene transfer independently of the classical endocytic pathway. |
| Databáze: | OpenAIRE |
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