Activation of the vascular niche supports leukemic progression and resistance to chemotherapy.

Activation of the vascular niche supports leukemic progression and resistance to chemotherapy.
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DOI:
10.1016/j.exphem.2014.08.003
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发表时间:
2014-11
影响因子:
2.6
通讯作者:
Butler, Jason M.
Butler, Jason M.
中科院分区:
医学4区
文献类型:
--
作者:
Poulos, Michael G.;Gars, Eric J.;Gutkin, Michael C.;Kloss, Christopher C.;Ginsberg, Michael;Scandura, Joseph M.;Rafii, Shahin;Butler, Jason M.

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Understanding the intricate cellular components of the bone marrow microenvironment can lead to the discovery of novel extrinsic factors that are responsible for the initiation and progression of leukemic disease. We have shown that endothelial cells (ECs) provide a fertile niche that allows for the propagation of primitive and aggressive leukemic clones. Activation of the ECs by VEGF-A provides cues that enable leukemic cells to proliferate at higher rates and also increases the adhesion of leukemia to ECs. VEGF-A activated ECs decrease the efficacy of chemotherapeutic agents to target leukemic cells. Inhibiting VEGF-dependent activation of ECs by blocking their signaling through VEGFR2 increases the susceptibility of leukemic cells to chemotherapy. Therefore, the development of drugs that target the activation state of the vascular niche could prove to be an effective adjuvant therapy in combination with chemotherapeutic agents.
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