書誌事項
- タイトル別名
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- Osteoblastic mTORC1 accelerates acute myeloid leukemia growth via IL-6 signaling
抄録
<p>Although there is increasing evidence that bone forming osteoblasts provide a microenvironment for leukemic stem cells (LSCs) and play a critical role in the maintenance and retention of LSCs, how those cells contribute to leukemia growth remains largely unclear. The mTOR complex 1 (mTORC1), a member of the serine/threonine kinases, is known to regulate the cellular function in various cell types. Using an MLL-AF9 acute myeloid leukemia (AML) mouse model, we found that AML cells enhance the mTORC1 activity in osteoblasts in vivo and in vitro. The osteoblast specific inactivation of Tsc1, a negative regulator of mTORC1, drives differentiation of hematopoietic stem cells (HSCs) toward myeloid lineage during steady state and promotes AML growth. Among the secretory factors examined, interleukine-6 (IL-6) was the most upregulated gene in Tsc1-deficient osteoblasts. Genetic inhibition of IL-6 receptor in AML cells significantly rescued tumor growth in osteoblast specific Tsc1-deficient mice. Collectively, our studies suggest mTORC1/IL-6 axis in osteoblastic niche could be a novel therapeutic target for AML.</p>
収録刊行物
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- 日本薬理学会年会要旨集
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日本薬理学会年会要旨集 93 (0), 1-SS-53-, 2020
公益社団法人 日本薬理学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390283659860034048
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- NII論文ID
- 130007811370
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- ISSN
- 24354953
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可