Acute myelogenous leukemia-induced sympathetic neuropathy promotes malignancy in an altered hematopoietic stem cell niche.

Acute myelogenous leukemia-induced sympathetic neuropathy promotes malignancy in an altered hematopoietic stem cell niche.
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DOI:
10.1016/j.stem.2014.06.020
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发表时间:
2014-09-04
期刊:
影响因子:
23.9
通讯作者:
Frenette, Paul S.
Frenette, Paul S.
中科院分区:
医学1区
文献类型:
--
作者:
Hanoun, Maher;Zhang, Dachuan;Mizoguchi, Toshihide;Pinho, Sandra;Pierce, Halley;Kunisaki, Yuya;Lacombe, Julie;Armstrong, Scott A.;Duehrsen, Ulrich;Frenette, Paul S.

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Perivascular mesenchymal stem and progenitor cells (MSPCs) are critical to form a healthy hematopoietic stem cell (HSC) niche. However, the interactions and influence of acute myelogenous leukemia (AML) stem cells with the microenvironment remain largely unexplored. We have found, unexpectedly, that neuropathy of the sympathetic nervous system (SNS) promotes leukemic bone marrow infiltration in an MLL-AF9 AML model. Development of AML disrupts SNS nerves and the quiescence of Nestin+ niche cells, leading to an expansion of phenotypic MSPCs primed for osteoblastic differentiation, at the expense of HSC-maintaining NG2+ periarteriolar niche cells. Adrenergic signaling maintaining niche quiescence is transduced by the β2, but not β3, adrenergic receptor expressed on stromal cells of leukemic bone marrow. These results indicate that sympathetic neuropathy may represent a mechanism for the malignancy to co-opt the microenvironment and suggest separate mesenchymal niche activities for malignant and healthy hematopoietic stem cells in the bone marrow.
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