CD44 and HCELL: preventing hematogenous metastasis at step 1.

CD44 and HCELL: preventing hematogenous metastasis at step 1.
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DOI:
10.1016/j.febslet.2011.07.039
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发表时间:
2011-10-20
期刊:
影响因子:
3.5
通讯作者:
Sackstein R
Sackstein R
中科院分区:
生物学3区
文献类型:
--
作者:
Jacobs PP;Sackstein R

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尽管我们在恶性肿瘤的遗传和表观遗传学改变方面的知识有了很大的进步,但我们对转移的分子基础的信息有限。超过90%的癌症死亡是由肿瘤细胞从原发部位扩散到远处器官和组织引起的,这突出了定义癌症转移的分子效应物的迫切需要。越来越多的证据表明,循环肿瘤细胞通过劫持正常的白细胞运输机制回到特定的组织。癌细胞特征性地表达CD 44,并且越来越多的证据表明HCELL(CD 44的唾液酸岩藻糖基化糖型)充当癌细胞上的主要选择素配体,允许肿瘤细胞与内皮、白细胞和血小板相互作用。在这里,我们回顾了CD 44和HCELL的结构生物学,并介绍了这些分子在介导器官特异性归巢/转移循环肿瘤细胞的功能目前的数据。
Despite great strides in our knowledge of the genetic and epigenetic changes underlying malignancy, we have limited information on the molecular basis of metastasis. Over 90% of cancer deaths are caused by spread of tumor cells from a primary site to distant organs and tissues, highlighting the pressing need to define the molecular effectors of cancer metastasis. Mounting evidence suggests that circulating tumor cells home to specific tissues by hijacking the normal leukocyte trafficking mechanisms. Cancer cells characteristically express CD44, and there is increasing evidence that HCELL, a sialofucosylated glycoform of CD44, serves as the major selectin ligand on cancer cells, allowing interaction of tumor cells with endothelium, leukocytes, and platelets. Here, we review the structural biology of CD44 and of HCELL, and present current data on the function of these molecules in mediating organ-specific homing/metastasis of circulating tumor cells.
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