Plexin-B2 Mediates Physiologic and Pathologic Functions of Angiogenin.
Plexin-B2 Mediates Physiologic and Pathologic Functions of Angiogenin.
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DOI:
10.1016/j.cell.2017.10.005
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发表时间:
2017-11-02
期刊:
影响因子:
64.5
通讯作者:
Hu GF
中科院分区:
文献类型:
--
作者:
Yu W;Goncalves KA;Li S;Kishikawa H;Sun G;Yang H;Vanli N;Wu Y;Jiang Y;Hu MG;Friedel RH;Hu GF
Angiogenin (ANG) is a secreted ribonuclease (RNase) with cell type- and context-specific roles in growth, survival, and regeneration. Although these functions require receptor-mediated endocytosis and appropriate subcellular localization, the identity of the cell surface receptor remains undefined. Here, we show that plexin-B2 (PLXNB2) is the functional receptor for ANG in endothelial, cancer, neuronal, and normal hematopoietic and leukemic stem and progenitor cells. Mechanistically, PLXNB2 mediates intracellular RNA processing that contribute to cell growth, survival, and regenerative capabilities of ANG. Antibodies generated against the ANG binding site on PLXNB2 restricts ANG activity in vitro and in vivo, resulting in inhibition of established xenograft tumors, ANG-induced neurogenesis and neuroprotection, levels of pro-self-renewal transcripts in hematopoietic and patient-derived leukemic stem/progenitor cells, and reduced progression of leukemia in vivo. PLXNB2 is therefore required for the physiological and pathological functions of ANG and has significant therapeutic potential in solid and hematopoietic cancers and neurodegenerative diseases. Plexin-B2 acts as a functional angiogenin receptor in a variety of physiological and pathological contexts, suggesting that the ANG-PLXNB2 axis could be harnessed for therapeutic applications.
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发表时间:
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影响因子:
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