CRSBP-1/LYVE-1 ligands stimulate contraction of the CRSBP-1-associated ER network in lymphatic endothelial cells.

CRSBP-1/LYVE-1 ligands stimulate contraction of the CRSBP-1-associated ER network in lymphatic endothelial cells.
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DOI:
10.1016/j.febslet.2012.04.001
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发表时间:
2012-05-21
期刊:
影响因子:
3.5
通讯作者:
Huang JS
Huang JS
中科院分区:
生物学3区
文献类型:
--
作者:
Hou WH;Liua IH;Huang SS;Huang JS

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CRSBP-1/LYVE-1配体(PDGF-BB、VEGF-A165和透明质酸)通过刺激淋巴管内皮细胞(LECs)收缩而在体外和体内诱导淋巴管细胞间连接的开放。CRSBP-1配体刺激晶状体上皮细胞收缩的机制尚不清楚。在这里,我们证明CRSBP-1定位于LECs的质膜和细胞内的纤维结构,包括原代人真皮LECs和SVEC4-10细胞。CRSBP-1相关的纤维结构与内质网相同,CRSBP-1和Bip在这些细胞中的共同定位证明了这一点。CRSBP-1配体以CRSBP-1依赖和紫杉醇(一种微管稳定剂)敏感的方式刺激ER网络的收缩。这些结果表明,LECs中配体刺激的内质网收缩与配体刺激的收缩有关。
CRSBP-1/LYVE-1 ligands (PDGF-BB, VEGF-A165 and hyaluronic acid) have been shown to induce opening of lymphatic intercellular junctions in vitro and in vivo by stimulating contraction of lymphatic endothelial cells (LECs). The mechanism by which CRSBP-1 ligands stimulate contraction of LECs is not understood. Here we demonstrate that CRSBP-1 is localized to the plasma membrane as well as intracellular fibrillar structures in LECs, including primary human dermal LECs and SVEC4–10 cells. CRSBP-1-associated fibrillar structures are identical to the ER network as evidenced by the co-localization of CRSBP-1 and BiP in these cells. CRSBP-1 ligands stimulate contraction of the ER network in a CRSBP-1-dependent and paclitaxel (a microtubule-stabilizing agent)-sensitive manner. These results suggest that ligand-stimulated ER contraction is associated with ligand-stimulated contraction in LECs.
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影响因子: 11.8
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