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Np95 is regulated by E1A during mitotic reactivation of terminally differentiated cells and is essential for S phase entry
https://repo.qst.go.jp/records/43089
https://repo.qst.go.jp/records/4308966e2195d-81ff-4d0f-ab35-ab8e30d57fe6
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2003-05-19 | |||||
タイトル | ||||||
タイトル | Np95 is regulated by E1A during mitotic reactivation of terminally differentiated cells and is essential for S phase entry | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Marc, Bonapace Ian
× Marc, Bonapace Ian× Latella, Lucia× Papait, Roberto× Nicassio, Francesco× Sacco, Alessandra× Muto, Masahiro× Crescenzi, Marco× Paolo, Di Fiore Pier× 武藤 正弘 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Terminal differentiation exerts a remarkably tight control on cell proliferation. However, the oncogenic products of DNA tumor viruses, such as adenovirus E1A, can force postmitotic cells to proliferate, thus representing a powerful tool to study progression into S phase. In this study, we identified the gene encoding Np95, a murine nuclear phosphoprotein, as an early target of E1A-induced transcriptional events. In terminally differentiated (TD) cells, the activation of Np95 was specifically induced by E1A, but not by overexpression of E2F-1 or of the cyclin E (cycE)-cyclin-dependent kinase 2 (cdk2) complex. In addition, the concomitant expression of Np95 and of cycE-cdk2 was alone sufficient to induce S phase in TD cells. In NIH-3T3 cells, the expression of Np95 was tightly regulated during the cell cycle, and its functional ablation resulted in abrogation of DNA synthesis. Thus, expression of Np95 is essential for S phase entry. Previous evidence suggested that E1A, in addition to its well characterized effects on the pRb/E2F-1 pathway, activates a parallel and complementary pathway that is also required for the reentry in S phase of TD cells (Tiainen, M., D. Spitkousky, P. Jansen-Durr, A. Sacchi, and M. Crescenzi. 1996. Mol. Cell. Biol. 16:5302-5312). From our results, Np95 appears to possess all the characteristics to represent the first molecular determinant identified in this pathway. | |||||
書誌情報 |
Journal of Cell Biology 巻 157, p. 909-914, 発行日 2002-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0021-9525 |