Developmental impact of MLL-AF4fusion gene on early hematopoieticstem cells
Project/Area Number |
22591162
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Pediatrics
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Research Institution | Ehime University |
Principal Investigator |
EGUCHI Mariko 愛媛大学, 大学院・医学系研究科, 准教授 (40420781)
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Co-Investigator(Kenkyū-buntansha) |
EGUCHI Minenari 愛媛大学, 医学部附属病院, 講師 (50420782)
ISHII Eichi 愛媛大学, 大学院・医学系研究科, 教授 (20176126)
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Co-Investigator(Renkei-kenkyūsha) |
NAKAHATA Tatsutoshi 京都大学, iPS 細胞研究センター, 教授 (20110744)
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Project Period (FY) |
2010 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
|
Keywords | 小児腫瘍学 / MLL / ES細胞 / 造血細胞分化 / 白血病 |
Research Abstract |
To study the developmental impact of MLL-AF4 fusion gene on early hematopoietic development, mouse embryonic stem (ES) cells with constitutive expression of MLL-AF4 were established. When hematopoietic differentiation was examined by embryoid body (EB) formation, Tie2^+c-kit^+cells which contain early hematopoietic stem cells were significantly reduced in MLL-AF4 expressing Ebs compared to that of control Ebs.Expression array analysis indicated that MLL-AF4 works as positive regulator of gene expression up-regulating various genes. Several genes up-regulated by MLL-AF4 were known to have important roles in cell differentiation to mesenchymal lineage, whereas transcriptional regulator of hematopoietic lineage were down-regulated. These MLL-AF4 expressing pre-hematopoietic stem cells with mesenchymal nature, were unable to cause leukemia in vitroor in vivo, showing that some secondary event is necessary to cause leukemia. MLL-AF4, having the potential to influence early hematopoietic cell differentiation, may cause leukemic transformation whenaccompanied by some important additional genetic events.
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Report
(4 results)
Research Products
(51 results)
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[Journal Article] Suppression of the let-7b microRNA pathway by DNA hypermethylation in infant acute lymphoblastic leukemia with MLL gene rearrangements2013
Author(s)
M. Nishi, M. Eguchi-Ishimae, Z. Wu, W. Gao, H. Iwabuki, S. Kawakami, H. Tauchi, T. Inukai, K. Sugita, Y. Hamasaki, E. Ishii and M. Eguchi
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Journal Title
Leukemia
Volume: 27巻2号
Pages: 389-397
Related Report
Peer Reviewed
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[Journal Article] Hemophagocytic lymphohistiocytosis after hematopoietic stem cell transplantation in children: a nationwide survey in Japan2012
Author(s)
T. Asano, K. Kogawa, A. Morimoto, Y. Ishida, N. Suzuki, S. Ohga, K. Kudo, S. Ohta, H. Wakiguchi, K. Tabuchi, S. Kato and E. Ishii
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Journal Title
Pediatr Blood Cancer
Volume: 59巻1号
Pages: 110-114
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Peer Reviewed
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[Journal Article] Clinical features and outcome of X-linked lymphoproliferative syndrome type 1 (SAP deficiency) in Japan identified by the combination of flow cytometric assay and genetic analysis2012
Author(s)
H. Kanegane, X. Yang, M. Zhao, K. Yamato, M. Inoue, K. Hamamoto, C. Kobayashi, A. Hosono, Y. Ito, Y. Nakazawa, K. Terui, K. Kogawa, E. Ishii, R. Sumazaki and T. Miyawaki
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Journal Title
Pediatr Allergy Immunol
Volume: 23巻5号
Pages: 488-493
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Peer Reviewed
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[Journal Article] Aurora kinase A-specific T-cell receptor gene transfer redirects T lymphocytes to display effective antileukemia reactivity2012
Author(s)
K. Nagai, T. Ochi, H. Fujiwara, J. An, T. Shirakata, J. Mineno, K. Kuzushima, H. Shiku, J. J. Melenhorst, E. Gostick, D. A. Price, E. Ishii and M. Yasukawa
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Journal Title
Blood
Volume: 119巻2号
Pages: 368-376
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Peer Reviewed
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[Journal Article] Novel dominant-negative mutant of GATA3 in HDR syndrome2011
Author(s)
M. Ohta, M. Eguchi-Ishimae, M. Ohshima, H. Iwabuki, K. Takemoto, K. Murao, T. Chisaka, E. Yamamoto, T. Higaki, K. Isoyama, M. Eguchi and E. Ishii
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Journal Title
J Mol Med (Berl)
Volume: 89巻1号
Pages: 43-50
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Peer Reviewed
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[Journal Article] Rapid diagnosis of FHL3 by flow cytometric detection of intraplatelet Munc13-4 protein.2011
Author(s)
Y. Murata, T. Yasumi, R. Shirakawa, K. Izawa, H. Sakai, J. Abe, N. Tanaka, T. Kawai, K. Oshima, M. Saito, R. Nishikomori, O. Ohara, E. Ishii, T. Nakahata, H. Horiuchi and T. Heike
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Journal Title
Blood
Volume: 118巻5号
Pages: 1225-1230
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Peer Reviewed
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[Journal Article] Early and rapid detection of X-linked lymphoproliferative syndrome with SH2D1A mutations by flow cytometry2011
Author(s)
M. Zhao, H. Kanegane, C. Kobayashi, Y. Nakazawa, E. Ishii, M. Kasai, K. Terui, Y. Gocho, K. Imai, J. Kiyasu, S. Nonoyama and T. Miyawaki
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Journal Title
Cytometry B Clin Cytom
Volume: 80巻1号
Pages: 8-13
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Peer Reviewed
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[Journal Article] Subtypes of familial hemophagocytic lymphohistiocytosis in Japan based on genetic and functional analyses of cytotoxic T lymphocytes2010
Author(s)
K. Nagai, K. Yamamoto, H. Fujiwara, J. An, T. Ochi, K. Suemori, T. Yasumi, H. Tauchi, K. Koh, M. Sato, A. Morimoto, T. Heike, E. Ishii and M. Yasukawa
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Related Report
Peer Reviewed
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[Presentation] Implication of genetic variations of Ikzf1, ARIDB5, and CEBPE genes in the risk of childhood acute lymphoblastic leukemia in Korea.2010
Author(s)
Han DK, Kim HN, Shin M-H, Eguchi-Ishimae M, Eguchi M, Ishii E, Baek HJ, Park SJ, Kim HJ, Hwang TJ, Kook H
Organizer
52nd Annual Meeting of American Society of Hematology
Place of Presentation
Orland, USA
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