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ナカムラ ノブヒロ
NAKAMURA NOBUHIRO
中村 暢宏 所属 京都産業大学 生命科学部 先端生命科学科 職種 教授 |
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| 発行・発表の年月 | 2006 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Quantitative monitoring of autophagic degradation |
| 執筆形態 | その他 |
| 掲載誌名 | Biochemical and Biophysical Research Communications |
| 巻・号・頁 | 351(1),71-77頁 |
| 著者・共著者 | Kawai, A.,Takano, S.,Nakamura, N.,Ohkuma, S. |
| 概要 | We developed a quantitative method for analyzing the induction of autophagy using a CHO-K1 cell line stably expressing a green fluorescent protein (GFP) in mitochondrial matrix (mtGFP-CHO). When mtGFP-CHO cells were incubated with a medium depleted of amino acids and serum, the GFP fluorescence was decreased concomitant with degradation of the protein. Biochemical and morphological analyses strongly suggested the degradation of mtGFP was mediated by bulk and non-selective degradation of mitochondria by autophagy. Quantitative measurement of the mtGFP degradation was performed by measuring the GFP fluorescence and DNA content by a fluorometric method and calculating the relative GFP intensity of DNA content, which approximated mean GFP fluorescence per cell. Using this method, we showed for the first time that different inducers, such as amino acids and serum starvation or rapamycin treatment, promote autophagy with different kinetics. This method is easy, relatively quick, and may be easily adapted to high throughput screening for novel drugs that enhance or inhibit autophagy, and also for genes that regulate or modulate autophagy. © 2006 Elsevier Inc. All rights reserved. |
| DOI | 10.1016/j.bbrc.2006.09.168 |
| ISSN | 0006-291X/1090-2104 |
| PMID | 17054905 |
| Put Code(ORCID) | 19809406 |