The cell surface structure of tumor endothelial marker 8 (TEM8) is regulated by the actin cytoskeleton.
The cell surface structure of tumor endothelial marker 8 (TEM8) is regulated by the actin cytoskeleton.
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DOI:
10.1016/j.bbamcr.2010.11.013
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发表时间:
2011-01
期刊:
影响因子:
--
通讯作者:
St Croix B
中科院分区:
文献类型:
--
作者:
Yang MY;Chaudhary A;Seaman S;Dunty J;Stevens J;Elzarrad MK;Frankel AE;St Croix B
Tumor Endothelial Marker 8 (TEM8) is an integrin-like cell surface protein upregulated on tumor blood vessels and a potential vascular target for cancer therapy. Here, we found that the ability of an anti-TEM8 antibody, clone SB5, to recognize the extracellular domain of TEM8 on the cell surface depends on other host-cell factors. By taking advantage of SB5’s ability to distinguish different forms of cell-surface TEM8, we identified alpha-smooth muscle actin and transgelin, an actin binding protein, as intracellular factors able to alter TEM8 cell surface structure. Overexpression of either of these proteins in cells converted TEM8 from an SB5-exposed to an SB5-masked form and protected cells from SB5-saporin immunotoxins. Because the predominant form of TEM8 on the cell surface is not recognized by SB5, we also developed a new monoclonal antibody, called AF334, which is able to recognize both the SB5-exposed and the SB5-masked forms of TEM8. AF334-saporin selectively killed TEM8-positive cells independent of TEM8 cell surface structure. These studies reveal that TEM8 exists in different forms at the cell surface, a structure dependent on interactions with components of the actin cytoskeleton, and should aid in the rational design of the most effective diagnostic and therapeutic anti-TEM8 monoclonal antibodies.
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DOI:
10.1073/pnas.0431098100
发表时间:
2003-04-29
影响因子:
11.1
作者:
Scobie, HM;Rainey, GJA;Young, JAT
通讯作者:
Young, JAT
影响因子:
3.7
作者:
Watson, Linley E.;Kuo, Shu-ru;Frankel, Arthur E.
通讯作者:
Frankel, Arthur E.
DOI:
10.1073/pnas.061031898
发表时间:
2001-03-27
影响因子:
11.1
作者:
Duesbery, NS;Resau, J;Woude, GFV
通讯作者:
Woude, GFV
DOI:
10.1083/jcb.200211018
发表时间:
2003-02-03
期刊:
The Journal of cell biology
影响因子:
--
作者:
Abrami L;Liu S;Cosson P;Leppla SH;van der Goot FG
通讯作者:
van der Goot FG
影响因子:
11.2
作者:
Cullen M;Seaman S;Chaudhary A;Yang MY;Hilton MB;Logsdon D;Haines DC;Tessarollo L;St Croix B
通讯作者:
St Croix B