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Negi S, Terada Y, Suzuyama M, Matsumoto H, Honbo A, Amagase Y, Mizukawa Y, Kiriyama A, Iga K, Urushidaini T, Sugiura Y. Intrinsic cell permeability of the GAGA zinc finger protein into HeLa cells. Biochem Biophys Res Commun 2015; 464:1034-1039. [PMID: 26187668 DOI: 10.1016/j.bbrc.2015.07.060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 07/11/2015] [Indexed: 11/30/2022]
Abstract
We examined the intrinsic cell permeability of a GAGA zinc finger obtained from the Drosophila melanogaster transcription factor and analyzed its mechanism of cellular uptake using confocal microscopy and flow cytometry. HeLa cells were treated with the Cy5-labeld GAGA peptides (containing a fluorescent chromophore) to detect fluorescence signals from the fluorescent labeling peptides by confocal microscopy. The results clearly indicated that GAGA peptides possess intrinsic cell permeability for HeLa cells. Based on the results of the flow cytometry analysis and the theoretical net positive charge of the GAGA peptides, the efficiency of cellular uptake of the GAGA peptides was predicted to depend on the net positive charge of the GAGA peptide as well as the cationic component ratio of Arg residues to Lys residues.
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Affiliation(s)
- Shigeru Negi
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan.
| | - Yuka Terada
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
| | - Misato Suzuyama
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
| | - Haruka Matsumoto
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
| | - Akino Honbo
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
| | - Yoko Amagase
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
| | - Yumiko Mizukawa
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
| | - Akiko Kiriyama
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
| | - Katsumi Iga
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
| | - Tetsuro Urushidaini
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
| | - Yukio Sugiura
- Faculty of Pharmaceutical Science, Doshisha Women's University, Koudo, Kyotanabe, Kyoto, 610-0395, Japan
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