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- YOKOYAMA Akihiko
- National Cancer Center Tsuruoka Metabolomics Laboratory
Bibliographic Information
- Other Title
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- MLL転座白血病発症機序と分子標的療法
- MLLテンザハッケツビョウ ハッショウ キジョ ト ブンシ ヒョウテキ リョウホウ
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Abstract
<p>Leukemia is caused by uncontrolled proliferation of immature hematopoietic progenitors. MLL fusion proteins, generated by chromosomal translocations, activate a broad range of previously transcribed genes to achieve the same expression profile as that of the parent cell in the daughter cells, thereby promoting self-renewal. Normally, replication of the expression profile only occurs in the hematopoietic stem cells (HSCs). A transactivation system comprised of MLL and AF4/ENL/P-TEFb (AEP) complexes promotes it by reactivating CpG-rich promoters. In the normal hematopoietic development, this system is tightly regulated and progressively suppressed during the course of hematopoietic differentiation so that non-HSC hematopoietic cells would not self-renew. Genetic mutations such as fusions of MLL and AEP components generate a constitutively active form of the MLL transcriptional machinery, which aberrantly promotes self-renewal even in non-HSC hematopoietic cells. In this review, I depict a molecular mechanism of MLL fusion-mediated leukemogenesis from a standpoint that leukemogenesis is driven by aberrant self-renewal that is mediated by hyper-active transcriptional machinery, and introduce several molecularly targeted therapies in the making which specifically perturb this transactivation system.</p>
Journal
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- Rinsho Ketsueki
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Rinsho Ketsueki 62 (8), 988-997, 2021
The Japanese Society of Hematology
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Details 詳細情報について
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- CRID
- 1390852259676441216
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- NII Article ID
- 130008085972
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- NII Book ID
- AN00252940
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- ISSN
- 18820824
- 04851439
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- NDL BIB ID
- 031712858
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed