Targeting tetramer-forming GABPβ isoforms impairs self-renewal of hematopoietic and leukemic stem cells.
Targeting tetramer-forming GABPβ isoforms impairs self-renewal of hematopoietic and leukemic stem cells.
复制标题
靶向四聚体形成的GABPβ同工型会损害造血和白血病干细胞的自我更新。
DOI:
10.1016/j.stem.2012.05.021
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发表时间:
2012-08-03
期刊:
影响因子:
23.9
通讯作者:
Xue, Hai-Hui
中科院分区:
文献类型:
--
作者:
Yu, Shuyang;Jing, Xuefang;Colgan, John D.;Zhao, Dong-Mei;Xue, Hai-Hui
Hematopoietic stem cells (HSCs) and leukemic stem cells (LSCs) are both capable of self-renewal, with HSCs sustaining multiple blood lineage differentiation and LSCs indefinitely propagating leukemia. The GABP complex, consisting of DNA binding GABPβ subunit and transactivation GABPβ subunit, critically regulates HSC multipotency and self-renewal via controlling an essential gene regulatory module. Two GABPβ isoforms, GABPβ1L and GABPβ2, contribute to assembly of GABPα2β2 tetramer. We demonstrate that GABPβ1L/β2 deficiency specifically impairs HSC quiescence and survival, with little impact on cell cycle or apoptosis in differentiated blood cells. The HSC-specific effect is mechanistically ascribed to perturbed integrity of the GABP-controlled gene regulatory module in HSCs. Targeting GABPβ1L/β2 also impairs LSC self-renewal in p210BCR-ABL-induced chronic myelogenous leukemia (CML) and exhibits synergistic effects with tyrosine kinase inhibitor imatinib therapy in inhibiting CML propagation. These findings identify the tetramer-forming GABPβ isoforms as specific HSC regulators and potential therapeutic targets in treating LSC-based hematological malignancy.
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影响因子:
4.8
作者:
Chinenov, Y;Henzl, M;Martin, ME
通讯作者:
Martin, ME
DOI:
10.1084/jem.20050075
发表时间:
2005-05-02
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Dakic A;Metcalf D;Di Rago L;Mifsud S;Wu L;Nutt SL
通讯作者:
Nutt SL
影响因子:
64.8
作者:
Naka, Kazuhito;Hoshii, Takayuki;Hirao, Atsushi
通讯作者:
Hirao, Atsushi
影响因子:
64.8
作者:
Hock, H;Hamblen, MJ;Orkin, SH
通讯作者:
Orkin, SH
影响因子:
23.9
作者:
Cui K;Zang C;Roh TY;Schones DE;Childs RW;Peng W;Zhao K
通讯作者:
Zhao K